WO2022228559A1 - 小区重选的方法、通信装置和计算机可读存储介质 - Google Patents

小区重选的方法、通信装置和计算机可读存储介质 Download PDF

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Publication number
WO2022228559A1
WO2022228559A1 PCT/CN2022/090381 CN2022090381W WO2022228559A1 WO 2022228559 A1 WO2022228559 A1 WO 2022228559A1 CN 2022090381 W CN2022090381 W CN 2022090381W WO 2022228559 A1 WO2022228559 A1 WO 2022228559A1
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Prior art keywords
cell
network slice
priority
frequency corresponding
supported
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English (en)
French (fr)
Inventor
孙飞
罗海燕
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to KR1020237040403A priority Critical patent/KR20230172592A/ko
Priority to EP22795028.4A priority patent/EP4322594A4/en
Publication of WO2022228559A1 publication Critical patent/WO2022228559A1/zh
Priority to US18/496,512 priority patent/US20240064587A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/13—Cell handover without a predetermined boundary, e.g. virtual cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • the present disclosure relates to the field of communications, and more particularly, to a method, a communication apparatus, and a computer-readable storage medium for cell reselection.
  • Mobility management is a mechanism in the cellular mobile communication system, which can assist the communication system to achieve load balancing, improve user experience and overall system performance.
  • One type of mobility management is cell selection or cell reselection, which is performed by the terminal equipment itself. controlling. When performing cell reselection, the terminal device starts cell measurement based on the frequency priority, and then completes the process of cell reselection according to the signal quality of the cell.
  • Example embodiments of the present disclosure provide a solution for cell reselection, which is expected to be suitable for network slicing scenarios.
  • a cell reselection method includes: a terminal device determining a target network slice; the terminal device determining at least one candidate cell based on the target network slice, and a frequency corresponding to the candidate cell supports the target network slice; and the terminal device is based on the at least one candidate cell A candidate cell is used for cell reselection.
  • the terminal device when performing cell reselection, the terminal device considers the factor of network slicing, and specifically can determine at least one candidate cell that supports the target network slice based on the target network slice, so as to ensure that the cell after cell reselection supports the target network slice, Suitable for network slicing scenarios.
  • the cell reselection scheme can meet the service requirements for slices and is more complete. This solution improves the efficiency of cell reselection, reduces the delay, and improves the service experience of the terminal device.
  • the method further includes: receiving, by the terminal device, first system information from an access network device of a serving cell where the terminal device is located, wherein the first system information includes: the The network slice supported by the frequency corresponding to the serving cell and/or the first priority of the network slice supported by the frequency corresponding to the serving cell.
  • the terminal device can obtain the slice information supported by the frequency corresponding to the serving cell through the first system information, so that the terminal device can consider the slice factor of the serving cell when performing cell reselection, so that the cell reselection scheme is more complete.
  • the first system information further includes a second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the first system information may include SIB2.
  • the first system information can include both the slice information supported by the frequency corresponding to the serving cell and the second priority of the network slice supported by the frequency corresponding to the adjacent cell, and the terminal device can determine the frequency corresponding to the serving cell and the adjacent cell based on this.
  • Supported network slicing, and then the slicing factors of the serving cell and neighboring cells can be considered during cell reselection, which makes the cell reselection scheme more complete and avoids additional signaling overhead.
  • the method further includes: receiving, by the terminal device, second system information from an access network device of a serving cell where the terminal device is located, wherein the second system information includes a corresponding neighbor cell
  • the second priority of the network slice supported by the frequency of the adjacent cell and/or the network slice supported by the frequency corresponding to the adjacent cell and the second system information also includes the indication information corresponding to the network slice supported by the frequency corresponding to the adjacent cell , wherein the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the second system information further includes a first priority of a network slice supported by a frequency corresponding to the serving cell.
  • the second system information may include SIB4 and/or SIB5.
  • the second system information can include both the information of the network slice supported by the frequency corresponding to the neighboring cell and the information of the network slice supported by the frequency corresponding to the serving cell, so that the terminal device can directly obtain parameters such as priority required for cell reselection , avoiding additional signaling overhead.
  • the first system information and/or the second system information may be newly defined SIBs.
  • the terminal equipment can more directly and quickly analyze parameters such as priority required for cell reselection, thereby shortening the overall time of cell reselection and improving the efficiency of cell reselection. efficiency.
  • the determining at least one candidate cell based on the target network slice includes: based on the frequency-supported network slice corresponding to the neighbor cell and the target network slice, from the target network slice The at least one candidate cell is determined in a neighboring cell.
  • the neighbor cell belongs to the candidate cell.
  • the terminal device can determine candidate cells based on the network slices supported by frequencies corresponding to neighboring cells, so that the frequencies corresponding to the candidate cells all support the target network slice, which can ensure that the reselected cells meet the service requirements for slices.
  • the terminal device performs cell reselection based on the at least one candidate cell, comprising: selecting, by the terminal device, a cell to camp on based on the at least one candidate cell; the terminal device The device judges whether the to-be-reserved cell satisfies the reselection condition; and in the case that the to-be-reserved cell satisfies the reselection condition, reselection to the to-be-reserved cell.
  • the terminal device selects a cell to camp on based on the at least one candidate cell, comprising: in the case that the serving cell supports the target network slice, from the serving cell The cell to be camped on is selected from the cell and the at least one candidate cell.
  • the to-be-reserved cell for cell reselection can be selected from the serving cell and the candidate cell, ensuring that the selected range is valid, and at the same time ensuring that the reselection cell corresponds to the frequency support The target network slice.
  • the terminal device selects a cell to camp on based on the at least one candidate cell, comprising: in the case that the serving cell does not support the target network slice, from the The cell to be camped on is selected from at least one candidate cell.
  • the serving cell does not support the target network slice
  • only the to-be-reserved cell for cell reselection can be selected from the candidate cells, without considering the serving cell, so as to avoid that the serving cell selected after reselection does not satisfy the target network slice. lead to unavailability of business requirements.
  • the terminal device selects the cell to camp on based on the at least one candidate cell, comprising: selecting the cell to camp on from the serving cell and neighboring cells, wherein the The neighbor cell includes the at least one candidate cell.
  • the terminal device selects the to-be-reserved cell from a serving cell and a neighboring cell based on at least one of the following: the target network slice is at a frequency corresponding to the serving cell the first priority, the frequency corresponding to the candidate cell supports the second priority of the target network slice, or the frequency corresponding to a non-candidate cell other than the at least one candidate cell in the target network slice in the neighboring cell the second priority.
  • the first priority of the target network slice at the frequency corresponding to the serving cell is that the frequency corresponding to the cell supports The first priority of the target network slice.
  • the method further includes: if the serving cell does not support the target network slice, setting the first priority of the target network slice at a frequency corresponding to the serving cell to is set as a first preset value, wherein the first preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the first priority of the frequency corresponding to the target network slice in the serving cell can be defined by setting the first preset value, and then when the cell is reselection Take the serving cell into account. Since the physical location of the terminal equipment is within the serving cell, the signal quality of the serving cell is generally higher than that of the neighboring cells. Therefore, the cell to be camped on will be selected from the serving cell and the candidate cell, and the factors of signal quality and network slicing can be considered at the same time. , to ensure that cell reselection achieves better results.
  • the method further includes: for a non-candidate cell in the neighboring cell except the at least one candidate cell, slicing the target network at a frequency corresponding to the non-candidate cell.
  • the second priority is set to a second preset value, wherein the second preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the cells to be camped on for cell reselection can be selected from all neighboring cells, so that more comprehensive factors can be considered more comprehensively , so that the reselected cell not only meets the requirements of slices but also other requirements such as signal quality.
  • the reselection to the cell to be camped on comprises: receiving third system information from an access network device of the cell to be camped on, the third system information Including information indicating whether the cell to camp on supports the target network slice; in the case that the third system information indicates that the cell to camp supports the target network slice, reselect the cell to camp on community.
  • the case of distinguishing cells can be considered, that is, different cells deployed on the frequency may support different network slices.
  • the identification includes at least one of the following: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • network slices can be identified in various forms, thereby realizing the diversification of identification.
  • a method for cell reselection includes: a terminal device obtains priority information of network slices supported by frequencies corresponding to adjacent cells; and the terminal device performs cell reselection based on the priority information of network slices supported by frequencies corresponding to the adjacent cells.
  • the terminal device when it performs cell reselection, it can perform cell reselection based on the priority information of the network slices supported by the frequencies corresponding to the neighboring cells, fully consider the different priorities of different network slices, and is suitable for network slice scenarios. It can ensure that the reselected cell meets the service requirements of the terminal equipment, reduces the access delay, and improves the service experience.
  • the terminal device acquires priority information of network slices supported by frequencies corresponding to neighboring cells, comprising: the terminal device receiving access from a serving cell where the terminal device is located system information of the network device, where the system information includes the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • system information further includes indication information corresponding to a network slice supported by a frequency corresponding to the neighboring cell, wherein the indication information is used to indicate whether the serving cell supports the The network slice supported by the frequency corresponding to the neighbor cell.
  • system information further includes a frequency-supported network slice corresponding to the neighbor cell.
  • the system information further includes a first priority of the frequency corresponding to the serving cell.
  • the network slice supported by the frequency corresponding to the serving cell has the first priority.
  • system information further includes a network slice supported by a frequency corresponding to the serving cell and/or a first priority of a network slice supported by a frequency corresponding to the serving cell.
  • the terminal device wherein the terminal device has a service that needs to be initiated, and the service corresponds to a target network slice, the terminal device is based on the priority of the network slice supported by the frequency corresponding to the neighbor cell
  • the information to perform cell reselection includes: the terminal device performs cell reselection based on the second priority of the target network slice supported by the frequency corresponding to the candidate cell in the neighboring cell, wherein the frequency corresponding to the candidate cell supports the target network slice.
  • the terminal device in the case that the serving cell supports the target network slice, is based on a second priority of the target network slice supported by the frequency corresponding to the candidate cell in the neighbor cell Performing cell reselection based on the first priority of the target network slice supported by the frequency corresponding to the serving cell and the second priority of the target network slice supported by the frequency corresponding to the candidate cell, by the terminal device, from A cell to be camped on is selected from the serving cell and the candidate cell; if the cell to be camped on satisfies the reselection condition, the cell to be camped on is reselected.
  • the terminal device in the case that the serving cell does not support the target network slice, is based on a second number of the target network slice supported by the frequency corresponding to the candidate cell in the neighbor cell Performing cell reselection by priority, including: the terminal device selects a cell to be camped on from the candidate cells based on the second priority of the target network slice supported by the frequency corresponding to the candidate cell; If the cell satisfies the re-selection condition, the cell to be camped on is re-selected.
  • the terminal device performs cell reselection based on the second priority of the target network slice supported by the frequency corresponding to the candidate cell in the neighboring cell, including: the terminal device is based on at least the following: Item 1: Select the to-be-resident cell from the serving cell and neighboring cells: the first priority of the target network slice at the frequency corresponding to the serving cell, the target supported by the frequency corresponding to the candidate cell in the neighboring cell the second priority of the network slice, or the second priority of the target network slice supported by frequencies corresponding to non-candidate cells other than the candidate cell in the neighboring cell of the target network slice; In the case that the remaining cell satisfies the reselection condition, the to-be-reserved cell is reselected.
  • the method further includes: if the serving cell does not support the target network slice, setting the first priority of the target network slice at a frequency corresponding to the serving cell to is set as a first preset value, wherein the first preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the method further includes: for non-candidate cells other than the candidate cell in the neighboring cells, slicing the target network at a second frequency corresponding to the non-candidate cell.
  • the priority is set to a second preset value, wherein the second preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the reselection to the cell to be camped on comprises: receiving third system information from an access network device of the cell to be camped on, the third system information Including information indicating whether the cell to camp on supports the target network slice; in the case that the third system information indicates that the cell to camp supports the target network slice, reselect the cell to camp on community.
  • the identification includes at least one of the following: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • an information transmission method includes: the access network device determines system information; the access network device sends the system information, wherein the system information includes at least one of the following: a network slice supported by a frequency corresponding to a serving cell, a network slice supported by a frequency corresponding to the serving cell The first priority of the network slice, the network slice supported by the frequency corresponding to the neighbor cell, or the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information may include first system information and second system information, wherein the first system information includes the network slice supported by the frequency corresponding to the serving cell and/or the first priority of the frequency corresponding to the serving cell , wherein the second system information includes the network slice supported by the frequency corresponding to the adjacent cell and/or the second priority of the network slice supported by the frequency corresponding to the adjacent cell.
  • the system information includes: a first priority of a network slice supported by a frequency corresponding to a serving cell, a network slice supported by a frequency corresponding to a neighboring cell, and a network slice corresponding to the neighboring cell. Second priority for network slices supported by frequency.
  • the system information includes: the first priority of the frequency corresponding to the serving cell, the network slice supported by the frequency corresponding to the adjacent cell, and the network supported by the frequency corresponding to the adjacent cell The second priority of the slice.
  • the system information further includes: indication information corresponding to the network slice supported by the frequency corresponding to the adjacent cell, where the indication information is used to indicate whether the serving cell supports the network supported by the frequency corresponding to the adjacent cell slice.
  • the identification includes at least one of the following: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • a communication device in a fourth aspect, includes: a first determination unit configured to determine a target network slice; a second determination unit configured to determine at least one candidate cell based on the target network slice, and a frequency corresponding to the candidate cell supports the target network slice and a cell reselection unit configured to perform cell reselection based on the at least one candidate cell.
  • a receiving unit configured to: receive first system information from an access network device of a serving cell where the communication apparatus is located, wherein the first system information includes: The network slice supported by the frequency corresponding to the serving cell and/or the first priority of the network slice supported by the frequency corresponding to the serving cell.
  • the first system information further includes: a second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • a receiving unit configured to: receive second system information from an access network device of a serving cell where the communication apparatus is located, wherein the second system information includes a neighbor The second priority of the network slice supported by the frequency corresponding to the area and/or the network slice supported by the frequency corresponding to the adjacent area, and the second system information also includes the network slice corresponding to the frequency supported by the adjacent area. indication information, wherein the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the second system information further includes: a first priority of a network slice supported by a frequency corresponding to the serving cell.
  • the second determining unit is configured to: determine the neighbor from the neighbor based on the frequency-supported network slice and the target network slice corresponding to the neighbor. at least one candidate cell.
  • the cell reselection unit includes: a selection subunit configured to select a cell to camp on based on the at least one candidate cell; a determination subunit configured to determine the Whether the cell to be camped on satisfies the reselection condition; the reselection subunit is configured to reselect the cell to be camped on if the cell to be camped on satisfies the reselection condition.
  • the selecting subunit is configured to select from the serving cell and the at least one candidate cell if the serving cell supports the target network slice the cell to be camped on.
  • the selection subunit is configured to: select the to-be-camped cell from the at least one candidate cell in the case that the serving cell does not support the target network slice Stay in the neighborhood.
  • the selection subunit is configured to: select the to-be-camped cell from the serving cell and neighboring cells based on at least one of the following: the target network slice is in The first priority of the frequency corresponding to the serving cell, the second priority of the target network slice supported by the frequency corresponding to the candidate cell, or the target network slice in the neighbor cell except the at least one candidate cell The second priority of the target network slice supported by frequencies other than non-candidate cells.
  • a setting unit is further included, configured to: in the case that the serving cell does not support the target network slice, set the target network slice in a corresponding network slice of the serving cell
  • the first priority of the frequency is set to a first preset value, wherein the first preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • a setting unit configured to: for non-candidate cells except the at least one candidate cell in the neighboring cell, place the target network slice in the The second priority of the frequency corresponding to the non-candidate cell is set to a second preset value, wherein the second preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the reselection subunit is configured to: receive third system information from an access network device of the cell to be camped on, where the third system information includes the Indication information of whether the cell to be camped on supports the target network slice; if the third system information indicates that the cell to be camped on supports the target network slice, reselect the cell to be camped on.
  • the identification includes at least one of the following: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • a communication device in a fifth aspect, includes: an acquisition unit configured to acquire priority information of network slices supported by frequencies corresponding to adjacent cells; and a cell reselection unit configured to be based on the priority information of network slices supported by frequencies corresponding to the adjacent cells Perform cell reselection.
  • the obtaining unit is configured to: receive system information from an access network device of a serving cell where the communication apparatus is located, the system information including frequency support corresponding to a neighboring cell The second priority of the network slice.
  • the system information includes a second priority of a frequency-supported network slice corresponding to the adjacent cell, and indication information corresponding to the frequency-supported network slice corresponding to the adjacent cell, wherein The indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information includes a frequency-supported network slice corresponding to a neighbor, a second priority of the frequency-supported network slice corresponding to the neighbor, and a network slice corresponding to the neighbor Indication information corresponding to the network slice supported by the frequency of the 10000 , wherein the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information further includes the first priority of the frequency corresponding to the serving cell.
  • the network slice supported by the frequency corresponding to the serving cell has the first priority.
  • system information further includes a network slice supported by a frequency corresponding to the serving cell and/or a first priority of a network slice supported by a frequency corresponding to the serving cell.
  • the cell reselection unit is configured to: based on the correspondence of candidate cells in the neighboring cells Cell reselection is performed with the second priority of the target network slice supported by the frequency of the candidate cell, wherein the frequency corresponding to the candidate cell supports the target network slice.
  • the cell reselection unit when the serving cell supports the target network slice, is configured to: based on the target network slice supported by the frequency corresponding to the serving cell The first priority and the second priority of the target network slice supported by the frequency corresponding to the candidate cell, the cell to be camped on is selected from the serving cell and the candidate cell; the reselection is satisfied in the cell to be camped on If the conditions are met, the cell to be camped on is reselected.
  • the cell reselection unit in the case that the serving cell does not support the target network slice, is configured to: a target network slice supported by a frequency corresponding to the candidate cell The second priority is to select the cell to be camped on from the candidate cells; in the case that the cell to be camped on satisfies the reselection condition, the cell to be camped on is reselected.
  • the cell reselection unit is configured to: select the to-be-reserved cell from a serving cell and a neighboring cell based on at least one of the following: the target network slice is in the The first priority of the frequency corresponding to the serving cell, the second priority of the target network slice supported by the frequency corresponding to the candidate cell in the adjacent cell, or the target network slice in the adjacent cell except the candidate cell.
  • the second priority of the frequency corresponding to the other non-candidate cells in the case that the to-be-reserved cell satisfies the reselection condition, the to-be-reserved cell is reselected.
  • a setting unit is further included, configured to: in the case that the serving cell does not support the target network slice, set the target network slice in a corresponding network slice of the serving cell
  • the first priority of the frequency is set to a first preset value, wherein the first preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • a setting unit configured to: for non-candidate cells in the neighboring cells except the candidate cell, place the target network slice in the non-candidate cell
  • the second priority of the frequency corresponding to the cell is set to a second preset value, wherein the second preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the cell reselection unit is configured to: receive third system information from an access network device of the cell to be camped on, where the third system information includes the Indication information of whether the cell to be camped on supports the target network slice; if the third system information indicates that the cell to be camped on supports the target network slice, reselect the cell to be camped on.
  • the identification includes at least one of the following: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • a communication device in a sixth aspect, includes: a determining unit configured to determine system information; a sending unit configured to send the system information, wherein the system information includes at least one of the following: a network slice supported by a frequency corresponding to a serving cell, a network slice corresponding to a serving cell The first priority of the network slice supported by the frequency of , the network slice supported by the frequency corresponding to the neighbor cell, or the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information may include first system information and second system information, wherein the first system information includes the network slice supported by the frequency corresponding to the serving cell and/or the first priority of the frequency corresponding to the serving cell , wherein the second system information includes the network slice supported by the frequency corresponding to the adjacent cell and/or the second priority of the network slice supported by the frequency corresponding to the adjacent cell.
  • the system information includes: a first priority of a network slice supported by a frequency corresponding to a serving cell, a network slice supported by a frequency corresponding to a neighboring cell, and a network slice corresponding to the neighboring cell. Second priority for network slices supported by frequency.
  • the system information includes: the first priority of the frequency corresponding to the serving cell, the network slice supported by the frequency corresponding to the adjacent cell, and the network supported by the frequency corresponding to the adjacent cell The second priority of the slice.
  • the system information further includes: indication information corresponding to the network slice supported by the frequency corresponding to the adjacent cell, where the indication information is used to indicate whether the serving cell supports the network supported by the frequency corresponding to the adjacent cell slice.
  • the identification includes at least one of the following: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • a communication device in a seventh aspect, includes a processor and a memory, and the memory stores instructions executed by the processor, when the instructions are executed by the processor, the apparatus enables the apparatus to: determine a target network slice; based on the target network Slicing determines at least one candidate cell whose frequency supports the target network slice; and performs cell reselection based on the at least one candidate cell.
  • it further includes a transceiver configured to: receive first system information from an access network device of a serving cell where the communication apparatus is located, wherein the system information includes: the The network slice supported by the frequency corresponding to the serving cell and/or the first priority of the network slice supported by the frequency corresponding to the serving cell.
  • the first system information further includes: a second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • a transceiver configured to: receive second system information from an access network device of a serving cell where the communication apparatus is located, wherein the system information includes a neighbor cell correspondence The second priority of the network slice supported by the frequency of the adjacent cell and/or the network slice supported by the frequency corresponding to the adjacent cell, and the second system information also includes the indication information corresponding to the network slice supported by the frequency corresponding to the adjacent cell , wherein the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the second system information further includes: a first priority of a network slice supported by a frequency corresponding to the serving cell.
  • the processor executes the instructions, causing the apparatus to implement: based on the frequency-supported network slice corresponding to the neighbor and the target network slice, from the neighbor The at least one candidate cell is determined in the zone.
  • the processor executes the instructions, so that the apparatus implements: selecting a cell to be camped on based on the at least one candidate cell; selection condition; in the case that the to-be-reserved cell meets the reselection condition, the to-be-reserved cell is reselected.
  • the processor executes the instructions, causing the apparatus to implement: if the serving cell supports the target network slice, from the serving cell and the The cell to be camped on is selected from at least one candidate cell.
  • the processor executes the instructions, causing the apparatus to implement: if the serving cell does not support the target network slice, from the at least one candidate cell to select the cell to be camped on.
  • the processor executes the instructions, causing the apparatus to implement: selecting the cell to camp on from the serving cell and a neighbor cell based on at least one of the following: The first priority of the target network slice in the frequency corresponding to the serving cell, the second priority of the target network slice supported by the frequency corresponding to the candidate cell, or the target network slice is divided in the neighbor cell. The second priority of the target network slice supported by the frequencies corresponding to the non-candidate cells other than the at least one candidate cell.
  • the processor executes the instructions, causing the apparatus to implement: if the serving cell does not support the target network slice, place the target network slice in the The first priority of the frequency corresponding to the serving cell is set as a first preset value, wherein the first preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the processor executes the instructions, causing the apparatus to implement: for non-candidate cells in the neighbor cell excluding the at least one candidate cell, the The second priority of the target network slice at the frequency corresponding to the non-candidate cell is set to a second preset value, wherein the second preset value is lower than the first priority of the target network slice supported by the frequency corresponding to the candidate cell. Second priority.
  • the processor executes the instructions, causing the apparatus to implement: receiving third system information from an access network device of the cell to be camped on, the third The system information includes indication information of whether the to-be-reserved cell supports the target network slice; if the third system information indicates that the to-be-reserved cell supports the target network slice, reselect the to-be-reserved cell to the target network slice. stay in the area.
  • the identification includes at least one of the following: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • a communication device comprising a processor and a memory, the memory stores an instruction executed by the processor, and when the instruction is executed by the processor, the device is made to realize: obtain Priority information of the network slice supported by the frequency corresponding to the adjacent cell; and performing cell reselection based on the priority information of the network slice supported by the frequency corresponding to the adjacent cell.
  • the method further includes a transceiver configured to: receive system information from an access network device of a serving cell where the communication apparatus is located, the system information including frequency support corresponding to a neighboring cell The second priority of the network slice.
  • the system information includes a second priority of a frequency-supported network slice corresponding to a neighbor cell, and indication information corresponding to a frequency-supported network slice corresponding to the neighbor cell, wherein The indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information includes a frequency-supported network slice corresponding to a neighbor, a second priority of the frequency-supported network slice corresponding to the neighbor, and a network slice corresponding to the neighbor Indication information corresponding to the network slice supported by the frequency of the 10000 , wherein the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information further includes the first priority of the frequency corresponding to the serving cell.
  • the network slice supported by the frequency corresponding to the serving cell has the first priority.
  • system information further includes a network slice supported by a frequency corresponding to the serving cell and/or a first priority of a network slice supported by a frequency corresponding to the serving cell.
  • the communication apparatus has a service to initiate, the service corresponding to a target network slice
  • the processor executes the instructions, causing the apparatus to implement: based on the neighbor Cell reselection is performed according to the second priority of the target network slice supported by the frequency corresponding to the candidate cell in the area, wherein the frequency corresponding to the candidate cell supports the target network slice.
  • the processor executes the instructions, causing the apparatus to implement: based on the frequency corresponding to the serving cell The first priority of the supported target network slice and the second priority of the target network slice supported by the frequency corresponding to the candidate cell, and the cell to be camped on is selected from the serving cell and the candidate cell; In the case that the camped cell satisfies the reselection condition, the cell to be camped on is reselected.
  • the processor executes the instructions, causing the apparatus to implement: based on the corresponding For the second priority of the target network slice supported by the frequency, the cell to be camped on is selected from the candidate cells; if the cell to be camped on satisfies the reselection condition, the cell to be camped on is reselected.
  • the processor executes the instructions, causing the apparatus to implement: selecting the cell to camp on from a serving cell and a neighbor cell based on at least one of the following: the The first priority of the target network slice in the frequency corresponding to the serving cell, the second priority of the target network slice supported by the frequency corresponding to the candidate cell in the adjacent cell, or the target network slice in the adjacent cell Cell reselection is performed with the second priority of frequencies corresponding to non-candidate cells other than the candidate cell.
  • the processor executes the instructions, causing the apparatus to implement: if the serving cell does not support the target network slice, place the target network slice in the The first priority of the frequency corresponding to the serving cell is set as a first preset value, wherein the first preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the processor executes the instructions, causing the apparatus to implement: for non-candidate cells in the neighboring cells excluding the candidate cell, the target network
  • the second priority of the slice at the frequency corresponding to the non-candidate cell is set to a second preset value, wherein the second preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell class.
  • the processor executes the instructions, causing the apparatus to implement: receiving third system information from an access network device of the cell to be camped on, the third The system information includes indication information of whether the to-be-reserved cell supports the target network slice; if the third system information indicates that the to-be-reserved cell supports the target network slice, reselect the to-be-reserved cell to the target network slice. stay in the area.
  • the identification includes at least one of the following: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • a communication device including a transceiver, a processor, and a memory
  • the memory stores instructions executed by the processor, and when the instructions are executed by the processor, causes the device to Implementation: determine system information; send the system information via the transceiver, wherein the system information includes at least one of the following: a network slice supported by a frequency corresponding to the serving cell, a first network slice supported by a frequency corresponding to the serving cell The priority, the network slice supported by the frequency corresponding to the neighbor cell, or the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information may include first system information and second system information, wherein the first system information includes the network slice supported by the frequency corresponding to the serving cell and/or the first priority of the frequency corresponding to the serving cell , wherein the second system information includes the network slice supported by the frequency corresponding to the adjacent cell and/or the second priority of the network slice supported by the frequency corresponding to the adjacent cell.
  • the system information includes: the first priority of the network slice supported by the frequency corresponding to the serving cell, the network slice supported by the frequency corresponding to the adjacent cell, and the network slice corresponding to the adjacent cell. Second priority for network slices supported by frequency.
  • the system information includes: the first priority of the frequency corresponding to the serving cell, the network slice supported by the frequency corresponding to the adjacent cell, and the network supported by the frequency corresponding to the adjacent cell The second priority of the slice.
  • the system information further includes: indication information corresponding to the network slice supported by the frequency corresponding to the adjacent cell, where the indication information is used to indicate whether the serving cell supports the network supported by the frequency corresponding to the adjacent cell slice.
  • the identification includes at least one of the following: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • a tenth aspect provides a terminal device.
  • the terminal device can implement the method described in any one of the first aspect or the second aspect or any implementation manner thereof.
  • the terminal device may include the communication apparatus described in any one of the fourth aspect, the fifth aspect, the seventh aspect or the eighth aspect or any implementation manner thereof.
  • an access network device is provided.
  • the access network device can implement the method described in the third aspect or any implementation manner thereof.
  • the access network device may include the apparatus described in any one of the sixth aspect or the ninth aspect or any implementation manner thereof.
  • a twelfth aspect provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements any one of the first or second or third aspects above or an operation of the method in any embodiment thereof.
  • a thirteenth aspect provides a chip or a chip system.
  • the chip or system of chips includes processing circuitry configured to perform operations according to the method of any of the above-described first or second or third aspects or any of its embodiments.
  • a fourteenth aspect provides a computer program or computer program product.
  • the computer program or computer program product is tangibly stored on a computer-readable medium and includes computer-executable instructions that, when executed, cause an apparatus to implement any of the first or second or third aspects above Operations of a method in an aspect or any embodiment thereof.
  • FIG. 1 shows a schematic diagram of a communication system 100 including network slices
  • FIG. 2 shows a schematic diagram of a communication system 200 according to an embodiment of the present disclosure
  • FIG. 3 shows a schematic flowchart of a method 300 for cell reselection according to an embodiment of the present disclosure
  • FIG. 4 shows another schematic flowchart of a method 400 for cell reselection according to an embodiment of the present disclosure
  • FIG. 5 shows a schematic diagram of another communication system 500 according to an embodiment of the present disclosure
  • FIG. 6 shows a schematic diagram of another communication system 600 according to an embodiment of the present disclosure
  • FIG. 7 shows a schematic flowchart of a process 700 of selecting a cell to camp on according to an embodiment of the present disclosure
  • FIG. 8 shows a schematic diagram of another communication system 800 according to an embodiment of the present disclosure.
  • FIG. 9 shows another schematic flowchart of a process 900 of selecting a cell to camp on according to an embodiment of the present disclosure
  • FIG. 10 shows a schematic flowchart of a method 1000 for cell reselection according to an embodiment of the present disclosure
  • FIG. 11 shows a schematic interaction diagram of a method 1100 for cell reselection according to an embodiment of the present disclosure
  • FIG. 12 shows a schematic diagram of a slice deployment scenario 1200 according to an embodiment of the present disclosure
  • FIG. 13 shows another schematic flowchart of a method 1300 for cell reselection according to an embodiment of the present disclosure
  • FIG. 14 shows another schematic interaction diagram of a method 1400 for cell reselection according to an embodiment of the present disclosure
  • FIG. 15 shows a schematic flowchart of an information transmission method 1500 according to an embodiment of the present disclosure
  • FIG. 16 shows a schematic block diagram of a communication apparatus 1600 according to an embodiment of the present disclosure
  • FIG. 17 shows a schematic block diagram of a communication apparatus 1700 according to an embodiment of the present disclosure
  • FIG. 18 shows a schematic block diagram of a communication apparatus 1800 according to an embodiment of the present disclosure
  • FIG. 19 shows a simplified block diagram of an example apparatus 1900 according to an embodiment of the present disclosure.
  • the term “comprising” and the like should be understood as open-ended inclusion, ie, “including but not limited to”.
  • the term “based on” should be understood as “based at least in part on”.
  • the terms “one embodiment” or “the embodiment” should be understood to mean “at least one embodiment”.
  • the terms “first”, “second”, etc. may refer to different or the same objects.
  • Embodiments of the present disclosure may be implemented in accordance with any suitable communication protocol, including, but not limited to, 3rd Generation (3G), fourth generation (4G), and fifth generation (5G) cellular communication protocols, such as electrical Wireless LAN communication protocols with Institute of Electrical and Electronics Engineers (IEEE) 802.11, etc., and/or any other protocols currently known or developed in the future.
  • 3G 3rd Generation
  • 4G fourth generation
  • 5G fifth generation
  • cellular communication protocols such as electrical Wireless LAN communication protocols with Institute of Electrical and Electronics Engineers (IEEE) 802.11, etc., and/or any other protocols currently known or developed in the future.
  • GPRS General Packet Radio Service
  • GSM Global System for Mobile Communications
  • EDGE enhanced data rate GSM Evolution system
  • UMTS Universal Mobile Telecommunications Service
  • LTE Long Term Evolution
  • WCDMA Wideband Code Division Multiple Access
  • CDMA2000 Code Division Multiple Access 2000
  • TD-SCDMA Time Division-Synchronization Code Division Multiple Access
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • NR New Radio
  • embodiments of the present disclosure are described below in the context of a 3rd Generation Partnership Project (3GPP) communication system for 5G.
  • 3GPP 3rd Generation Partnership Project
  • the embodiments of the present disclosure are not limited to being applied to the 3GPP communication system of 5G, but may be applied to any communication system having similar problems, such as a wireless local area network (WLAN), a wired communication system, or a future development other communication systems, etc.
  • WLAN wireless local area network
  • wired communication system a wired communication system
  • future development other communication systems etc.
  • terminal device refers to any terminal device capable of wired or wireless communication with network devices or with each other.
  • Terminal equipment may sometimes be referred to as user equipment (User Equipment, UE).
  • the terminal device may be any type of mobile terminal, fixed terminal or portable terminal.
  • terminal devices may include mobile handsets, sites, units, devices, Mobile Terminals (MT), subscription stations, portable subscription stations, Internet nodes, communicators, desktop computers, laptop computers, notebook computers, tablets Computers, personal communication system equipment, personal navigation equipment, personal digital assistants (Personal Digital Assistant, PDA), positioning equipment, radio broadcast receivers, e-book equipment, game equipment, Internet of Things (Internet of Things, IoT) equipment, in-vehicle equipment , aircraft, Virtual Reality (VR) devices, Augmented Reality (AR) devices, wearable devices, terminal devices in 5G networks or in the evolved Public Land Mobile Network (PLMN) Any terminal device, other device that can be used for communication, or any combination of the above.
  • the embodiments of the present disclosure do not limit this.
  • the term "access network device” as used in this disclosure is an entity or node that can be used to communicate with a terminal device.
  • the access network device may be a device deployed in a radio access network to provide a wireless communication function for a mobile terminal, for example, a radio access network (Radio Access Network, RAN) network device.
  • Access network equipment may include various types of base stations.
  • the access network equipment may include various forms of macro base station, micro base station, pico base station, femto base station, relay station, access point, Remote Radio Unit (RRU), Radio Head (RH). ), remote radio head (Remote Radio Head, RRH) and so on.
  • RRU Remote Radio Unit
  • RH Radio Head
  • RRH remote radio head
  • the names of access network equipment may be different.
  • the access network device may include a centralized unit (Central Unit, CU) and/or a distributed unit (Distributed Unit, DU).
  • CUs and DUs can be placed in different places, for example: DUs are far away, placed in areas with high traffic, and CUs are placed in the central computer room.
  • the CU and DU can also be placed in the same room.
  • CU and DU can also be different components under one rack.
  • the above-mentioned apparatuses for providing wireless communication functions for mobile terminals are collectively referred to as access network equipment, and the embodiments of the present disclosure are not specifically limited.
  • Network Slice is a virtual logical network that can provide specific network capabilities. For further understanding of network slicing, reference may be made to FIG. 1 .
  • Figure 1 shows a schematic diagram of a communication system 100 including network slices. As shown in the figure, on the infrastructure pool 110, a plurality of network slices 120-1, 120-2, . ), where N is an integer greater than 1. It should be understood that the number of network slices and the infrastructure shown in FIG. 1 are only examples, and network slices may also be simply referred to as "slices".
  • the infrastructure pool 110 may include various physical or virtual network devices required for supporting network services, such as at least one of the following: access network devices, servers, switches, or core network devices, and the like.
  • a Radio Access Network (RAN) 130-1 may provide RAN resources
  • a Core Network (CN) 130-2 may provide one or more CN functions.
  • MNOs Mobile Network Operators
  • SLA Service Level Agreement
  • RAN resources and the like can be allocated to different network slices 120 according to different service requirements or tenant requirements. Therefore, different network slices 120 can provide different network capabilities and network characteristics, so as to meet different service requirements of the device 140 .
  • the type of the network slice 120 is usually related to the type of service to be supported, and may include, for example, Enhanced Mobile Broadband (eMBB), Ultra-Reliable Low Latency Communication (URLLC), Massive Internet of Things (massive Internet of Things) Internet of Things, mIoT), Vehicle-to-Everything (V2X) and other types.
  • eMBB Enhanced Mobile Broadband
  • URLLC Ultra-Reliable Low Latency Communication
  • Massive Internet of Things massive Internet of Things
  • mIoT Vehicle-to-Everything
  • V2X Vehicle-to-Everything
  • eMBB can provide greater data bandwidth, such as latency improvements for humidity on both 5G (NR) and 4G (LTE).
  • URLLC can meet the requirements of more bandwidth and ultra-reliable and low-latency, and can reduce end-to-end delay, especially for some applications that are both delay-sensitive and require wide coverage.
  • mIOT can meet the communication between a large number of devices in a wide area with low power consumption.
  • V2X enables communication between vehicles and vehicles, vehicles and access network equipment, vehicles and other terminal equipment, etc., for example, it can be used in future intelligent transportation systems.
  • the network slice 120-1 may be an eMMB slice
  • the network slice 120-2 may be an mIoT slice
  • the network slice 120-N may be a V2X slice.
  • Different network slices 120 may be logical networks with different characteristics and isolated from each other, so as to provide services to users in a targeted manner.
  • 5G network slicing is a network architecture capable of multiplexing virtualized and independent logical networks on the same physical network infrastructure.
  • Each network slice can be an isolated end-to-end network designed to meet various requirements requested by a particular application.
  • S-NSSAI Single Network Slice Selection Assistance Information
  • the S-NSSAI may include a slice/service type (Slice/Service Type, SST), which is used to indicate the characteristics of the network slice and the service type to be served.
  • SST Slice/Service Type
  • S-NSSAI can also include Slice Differentiator (SD), which is used to further distinguish multiple network slice instances that satisfy the same SST. SD is optional.
  • SD Slice Differentiator
  • FIG. 2 shows a schematic diagram of a communication system 200 according to an embodiment of the present disclosure.
  • the system 200 of FIG. 2 includes a terminal device 210 and an access network device 240 .
  • the terminal device 210 is located in the serving cell 220 .
  • the serving cell 220 has a neighbor cell 230-1 and a neighbor cell 230-2.
  • the access network device 240 may be an access network device serving the cell 220 .
  • the access network device 240 may be a public mobile communication base station (eg gNB) or the like.
  • the adjacent area 230-1 and the adjacent area 230-2 may be collectively referred to as the adjacent area 230 hereinafter. It should be understood that the number of neighbors 230 shown in FIG. 2 is merely an example.
  • the frequency of the serving cell 220 (ie, the serving frequency) is f1
  • the frequency of the adjacent cell 230-1 is f2
  • the frequency of the adjacent cell 230-2 is f3.
  • the frequency in the embodiment of the present disclosure may also be referred to as a frequency point or a carrier frequency (Carrier Frequency), etc., which is not limited in the present disclosure.
  • Carrier Frequency Carrier Frequency
  • frequency is used as an example for description below.
  • the frequency in the embodiment of the present disclosure may be a value within a corresponding frequency range, such as a central value.
  • frequency is used as an example for description below, but it can be understood that the frequency in the embodiment of the present disclosure may also be replaced with a corresponding frequency range.
  • the cells work on corresponding frequencies, for example, the frequency of the serving cell 220 is f1, that is, the serving cell 220 works on the frequency f1. It is understandable that a certain frequency may be deployed with multiple different cells, for example, the frequency f2 may be equal to the frequency f3, that is, the adjacent cell 230-1 and the adjacent cell 230-2 are deployed at the frequency f2 at the same time.
  • a serving cell and a neighboring cell are relative concepts, which may change as the terminal device 210 moves, which is not limited in the present disclosure.
  • System 200 may include any suitable number of other devices suitable for implementing embodiments of the present disclosure.
  • FIG. 2 is only a schematic diagram, and the three cells shown in it are not limited to the above scenarios.
  • the neighboring cell 230 may be any one of the following serving cells 220: same-system, same-frequency cell, same-system, different-frequency Cells, same-frequency cells of different systems, cells of different systems and different frequencies, etc. The present disclosure is not limited to this.
  • the terms "cell”, “frequency”, and “network slice” are involved, wherein a cell has a corresponding frequency, or is simply referred to as a frequency of a cell.
  • one or more cells can be deployed on the frequency.
  • a frequency can support one or more network slices, and a cell can support one or more network slices.
  • the term "priority” is involved, which may also be referred to as “reselection priority (Reselection Priority)” or “cell reselection priority (cell Reselection Priority)". as priority.
  • the priority may be sent by the access network device through system information, a radio resource control release (Radio Resource Control Release, RRC Release) message.
  • priorities for inter-frequency and inter-system may be inherited from inter-system during inter-system reselection.
  • the value range of the priority may be 0 to 7, and a larger value indicates a higher priority.
  • the priority level may also be expressed in other manners, which is not limited in the present disclosure.
  • a sub-priority may be further included, also called a cell reselection sub-priority (Cell Reselection Sub Priority).
  • Cell Reselection Sub Priority Cell Reselection Sub Priority
  • the value range of the sub-priority may be 0.2, 0.4, 0.6, 0.8, etc.
  • FIG. 3 shows a schematic flowchart of a method 300 for cell reselection according to an embodiment of the present disclosure.
  • the method 300 may be performed by the terminal device 210 .
  • the method 300 shown in FIG. 3 may include steps 310-330.
  • the terminal device determines the target network slice.
  • the target network slice may be a network slice expected by the terminal device, or simply referred to as an intended slice (Intended Slice).
  • a terminal device in an idle state (idle) or an inactive state (inactive) needs to perform cell reselection during the movement process, and at this time, the terminal device can determine the target network slice.
  • the terminal device 310 may determine the slice corresponding to the service as the target network slice .
  • the slice corresponding to the service to be initiated by the terminal device is the desired slice, and exemplarily, the service may also be referred to as slice communication.
  • the corresponding target network slice is an eMBB slice.
  • the service to be initiated by the terminal device is an automatic driving service
  • it can be determined that the corresponding target network slice is a URLLC slice.
  • the service to be initiated by the terminal device is a smart home control service
  • it can be determined that the corresponding target network slice is an mIOT slice.
  • the service to be initiated by the terminal device is an automatic driving service
  • it can be determined that the corresponding target network slice is a V2X slice.
  • the terminal device may determine at least one of the allowed network slices as the target network slice at this time.
  • the target network slice may be determined by sending the identifier of the target network slice to the access layer (Access Stratum, AS) by the non-access stratum (Non-Access Stratum, NAS) of the terminal device.
  • access layer Access Stratum, AS
  • non-Access stratum Non-Access Stratum, NAS
  • the identifier of the network slice can be at least one of the following: (1) S-NSSAI, (2) Slice ID (Slice ID), (3) Slice group ID (Slice group ID), (4) Access Category (Access Category, AC ), or (5) Access Identity (AI).
  • the target network slice is represented as S2 in this embodiment of the present disclosure.
  • the terminal device determines at least one candidate cell based on the target network slice, where the frequency corresponding to the candidate cell supports the target network slice.
  • the frequency supporting the target network slice may include that the frequency may be used to access the target network slice, that is, the frequency may be used to access the target network slice.
  • the terminal device may determine a frequency at which the target network slice can be accessed, and may further use a cell deployed on the frequency as at least one candidate cell.
  • the terminal device may determine at least one candidate cell based on the network slice supported by the frequency corresponding to the neighbor cell and the target network slice determined in 310 .
  • the terminal device may obtain network slices supported by frequencies corresponding to adjacent cells, use the frequencies supporting the target network slice as candidate frequencies, and may further determine the cells deployed on the candidate frequencies as at least one candidate frequency community.
  • Neighboring cells may be intra-system and inter-frequency cells, or may be inter-system cells.
  • the frequencies corresponding to the adjacent cells may be different frequencies of the same system or may be frequencies of different systems.
  • the frequencies corresponding to adjacent cells may be different frequencies of the NR system or inter-RAT (Radio Access Technology, RAT) frequencies.
  • RAT Radio Access Technology
  • step 312 may also be included: the terminal device receives system information from the access network device.
  • the system information may include network slices supported by the frequency corresponding to the neighbor cell. That is, the network slice supported by the frequency corresponding to the adjacent cell can be provided to the terminal device through the system information, so that the terminal device can directly obtain the network slice supported by the frequency corresponding to the adjacent cell.
  • the system information may include the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information may indicate the network slices supported by the frequency corresponding to the adjacent cell in an implicit form, so that the terminal device can indirectly obtain the network slice supported by the frequency corresponding to the adjacent cell.
  • the terminal device may determine at least one candidate cell based on the system information.
  • FIG. 3 shows that 312 is executed before 320 , in this embodiment of the present disclosure, 312 may be executed at the same time as 310 or not at the same time, for example, it may be executed before 310 , and this disclosure does not limited.
  • the system information sent by the access network device may include a master information block (Master Information Block, MIB) and a system information message (System Information Message), wherein the system information message may also include various types of system information blocks (System Information Block, SIB), such as SIB1, SIB2, SIB3, SIB4, or SIB5, etc. It can be understood that the system information can also be other types of SIBs defined later, which are not limited in the present disclosure.
  • MIB Master Information Block
  • SIB System Information Block
  • SIB System Information Block
  • the terminal device may determine at least one candidate cell based on the system information.
  • the network slices supported by the frequency f2 include the first network slice S1 and the second network slice S2.
  • the system information may use "f2: ⁇ S1, S2 ⁇ " to indicate that the network slices supported by the frequency f2 are S1 and S2.
  • the system information may include frequency-supported network slices corresponding to one or more neighbor cells.
  • the terminal device may acquire the network slice supported by the frequency corresponding to the adjacent cell 230-1 and the network slice supported by the frequency corresponding to the adjacent cell 232-2.
  • the network slices supported by the frequency f2 corresponding to the neighbor 230-1 are represented by "f2: ⁇ S1, S2 ⁇ ”
  • the network slices supported by the frequency f2 corresponding to the neighbor 230-1 are represented by "f3: ⁇ S1, S2, S3 ⁇ ”.
  • the network slices supported by frequency f3 are S1, S2 and S3. It should be noted that this is only a schematic example, and should not be construed as a limitation to the embodiments of the present disclosure for easier understanding of the solution.
  • all neighboring cells deployed on this frequency can be used as candidate cells, that is, all neighboring cells deployed on this frequency belong to candidate cells. For example, if the first frequency supports the target network slice, all cells deployed on the first frequency belong to candidate cells. If the second frequency does not support the target network slice, all cells deployed on the second frequency do not belong to candidate cells.
  • the network slice supported by the frequency f2 corresponding to the adjacent area 230-1 includes S2
  • the network slice supported by the frequency f3 corresponding to the adjacent area 230-2 also includes S2
  • the frequency f2 and the frequency f3 belong to the candidate frequencies, and correspondingly, the neighboring cell 230-1 and the neighboring cell 230-2 can be determined as candidate cells.
  • frequencies that support target network slices may be determined as candidate frequencies, and frequencies that do not support target network slices may be determined as non-candidate frequencies. Accordingly, all cells deployed on non-candidate frequencies are non-candidate cells.
  • the terminal device performs cell reselection based on the at least one candidate cell.
  • the terminal device may select a cell to be camped on based on at least one candidate cell, and then perform cell reselection based on the cell to be camped on.
  • the terminal device may select the cell to be camped on based on at least one candidate cell, determine whether the cell to be camped on satisfies the reselection condition, and reselect the cell to be camped if the cell to be camped satisfies the reselection condition. stay in the area.
  • the selecting of the cell to be camped on by the terminal device based on the at least one candidate cell includes: the terminal device selecting the cell to be camped on from the serving cell and the at least one candidate cell.
  • the selecting of the cell to be camped on by the terminal device based on the at least one candidate cell includes: the terminal device selecting the cell to be camped on from the at least one candidate cell.
  • the selection of the cell to be camped on by the terminal device based on the at least one candidate cell includes: the terminal device selects the cell to be camped on from a serving cell and a neighboring cell, where the neighboring cell includes at least one candidate cell.
  • the neighbor cells may also include non-candidate cells other than the at least one candidate cell.
  • the terminal device may select the cell to be camped on based on the priority information, and the priority information will be described in more detail below in conjunction with the system information.
  • the system information may be sent by the access network device to the terminal device, where the access network device is the access network device of the serving cell where the terminal device is located.
  • the terminal device receives system information from the access network device.
  • the system information includes network slices supported by the frequency corresponding to the serving cell.
  • the terminal device can determine whether the serving cell supports the target network slice based on the system information.
  • the system information may be SIB2 or may be a newly defined SIB.
  • the target network slice is S2.
  • the system information may use " ⁇ S1, S2 ⁇ " to indicate that the network slices supported by the serving cell 220 are S1 and S2. Then, the terminal device can determine that the serving cell supports the target network slice S2.
  • the system information may use " ⁇ S1 ⁇ ” to indicate that the network slice supported by the serving cell 220 is S1. Then, the terminal device may determine that the serving cell does not support the target network slice S2.
  • the system information includes the first priority of the frequency corresponding to the serving cell, and the network slice supported by the frequency corresponding to the serving cell.
  • the terminal device can determine whether the serving cell supports the target network slice based on the system information; and further determine the first priority of the target network slice supported by the frequency corresponding to the serving cell if it is determined to support the target network slice.
  • the system information may be SIB2 or may be a newly defined SIB.
  • the system information may include first system information and second system information, the first system information includes the first priority of the frequency corresponding to the serving cell, and the second system information includes the network slice supported by the frequency corresponding to the serving cell .
  • the first system information may be SIB2, and the second system information may be a newly defined SIB.
  • the target network slice is S2.
  • the system information may use "P1" and " ⁇ S1, S2 ⁇ ” to indicate that the first priority of the frequency corresponding to the serving cell is P1, and the network slices supported by the serving cell 220 are S1 and S2. Then, the terminal device may determine that the serving cell supports the target network slice S2, and the first priority of the target network slice supported by the frequency corresponding to the serving cell is P1.
  • the system information may use "P1x” and " ⁇ S1 ⁇ ” to indicate that the first priority of the frequency corresponding to the serving cell is P1x, and the network slice supported by the serving cell 220 is S1. Then, the terminal device may determine that the serving cell does not support the target network slice S2, and the first priority of the target network slice supported by the frequency corresponding to the serving cell does not exist in the system information.
  • the system information includes the first priority of the network slice supported by the frequency corresponding to the serving cell.
  • the terminal device can determine (eg indirectly) whether the serving cell supports the target network slice based on the system information; and if so, further determine the first priority of the target network slice supported by the frequency corresponding to the serving cell.
  • the system information may be SIB2 or may be a newly defined SIB.
  • the correspondence between the order of the first priority in the system information and the network slice may be pre-defined.
  • the system information may use "P1x, P1, NULL (null)" to indicate that the first priority of the network slice supported by the frequency corresponding to the serving cell is P1x, P1 and null, respectively.
  • the terminal device may determine that the serving cell supports the target network slice S2, and the first priority of the target network slice supported by the frequency corresponding to the serving cell is P1.
  • the system information may use "P1x, NULL, NULL" to indicate that the first priorities of the network slices supported by the frequencies corresponding to the serving cell are P1x, NULL, and NULL, respectively. Then, the terminal device can determine that the serving cell does not support the target network slice S2, the first priority of the target network slice supported by the frequency corresponding to the serving cell in the system information is empty, or consider that the frequency corresponding to the serving cell does not exist in the system information The first priority of supported target network slices.
  • the system information includes the network slice supported by the frequency corresponding to the serving cell and the first priority of the network slice supported by the frequency corresponding to the serving cell.
  • the terminal device may determine (eg, directly) whether the serving cell supports the target network slice based on the system information; and if so, further determine the first priority of the target network slice supported by the frequency corresponding to the serving cell.
  • the system information may be SIB2 or may be a newly defined SIB.
  • the target network slice is S2.
  • the system information may use " ⁇ S1, P1x ⁇ , ⁇ S2, P1 ⁇ " to indicate that the network slices supported by the serving cell 220 are S1 and S2, and the first priority of the network slice S1 supported by the serving cell 220 is P1x, The first priority of the network slice S2 supported by the serving cell is P1.
  • the terminal device may determine that the serving cell supports the target network slice S2, and the first priority of the target network slice supported by the frequency corresponding to the serving cell is P1.
  • the system information may indicate that the network slice supported by the serving cell 220 is S1 and the first priority of the network slice S1 supported by the serving cell 220 is P1x by means of and " ⁇ S1, P1x ⁇ ". Then, the terminal device may determine that the serving cell does not support the target network slice S2, and the first priority of the target network slice supported by the frequency corresponding to the serving cell does not exist in the system information.
  • the system information includes the network slice supported by the frequency corresponding to the serving cell and the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information may be a newly defined SIB.
  • the system information may include first system information and second system information, the first system information includes the network slice supported by the frequency corresponding to the serving cell, and the second system information includes the first system information of the network slice supported by the frequency corresponding to the adjacent cell. Second priority.
  • the first system information may be SIB2, and the second system information may be SIB4 and/or SIB5.
  • the system information can use " ⁇ S1, P21 ⁇ , ⁇ S2, P22 ⁇ " to indicate that the network slices supported by the frequency corresponding to the adjacent cell 230-1 are S1 and S2, and the frequency supported by the frequency corresponding to the adjacent cell 230-1
  • the second priority of S1 is P21
  • the second priority of S2 supported by the frequency corresponding to the neighboring cell 230-1 is P22.
  • the terminal device may determine that the frequency corresponding to the adjacent cell 230-1 supports the target network slice S2, and the second priority of the target network slice S2 supported by the frequency corresponding to the adjacent cell 230-1 is P22.
  • the second priority of the network slice supported by the frequency corresponding to the adjacent cell is similar to the first priority of the network slice supported by the frequency corresponding to the serving cell described above, so it is not repeated here.
  • the system information includes the first priority of the frequency corresponding to the serving cell, the network slice supported by the frequency corresponding to the serving cell, and the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information may be a newly defined SIB.
  • the system information may include first system information and second system information. The first system information includes the first priority of the frequency corresponding to the serving cell and the network slice supported by the frequency corresponding to the serving cell, and the second system information includes the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the first system information includes a first priority of a frequency corresponding to the serving cell
  • the second system information includes a second priority of a network slice supported by a frequency corresponding to the serving cell and a network slice supported by a frequency corresponding to a neighboring cell.
  • the first system information may be SIB2
  • the second system information may be SIB4 and/or SIB5.
  • the system information may include at least one of the following: a network slice supported by a frequency corresponding to the serving cell, or a first priority of a network slice supported by a frequency corresponding to the serving cell. Therefore, the terminal device can determine whether the serving cell supports the target network slice based on the system information.
  • the system information includes a network slice supported by a frequency corresponding to a neighbor cell, and indication information corresponding to a network slice supported by a frequency corresponding to the neighbor cell, wherein the indication information is used to indicate whether the serving cell is A network slice supported by the frequency corresponding to the neighbor cell is supported.
  • the system information may be SIB4 and/or SIB5.
  • the system information may be a newly defined SIB.
  • the first indication information may indicate that the serving cell supports the network slice, and the second indication information indicates that the serving cell does not support the network slice.
  • the first indication information is 1 and the second indication information is 0; or the first indication information is 0 and the second indication information is 1. It can be understood that this example is only for illustration, the first indication information and/or the second indication information may adopt other manners, and the first indication information and/or the second indication information may occupy a predetermined number of bits, such as 1 bit or more bits.
  • the system information can use " ⁇ S1, 1 ⁇ , ⁇ S2, 1 ⁇ " to indicate that the network slices supported by the frequency corresponding to the neighbor cell 230-1 are S1 and S2, and the serving cell 220 supports the network slice S1, and the serving cell 220 also supports the network Slice S2. Then, the terminal device can determine, based on the system information, that the serving cell 220 supports the target network slice S2, and determines that the frequency corresponding to the neighbor cell 230-1 supports the target network slice S2.
  • the system information includes the second priority of the frequency-supported network slice corresponding to the neighbor cell, and indication information corresponding to the frequency-supported network slice corresponding to the neighbor cell, wherein the indication information is used for Indicates whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information may be SIB4 and/or SIB5.
  • the system information may be a newly defined SIB.
  • the correspondence between the order of the second priority in the system information and the network slice may be pre-defined.
  • the three second priorities carried in the three fields in the system information correspond to S1, S2 and S3.
  • the target network slice is S2.
  • the system information can use " ⁇ P21, 1 ⁇ , ⁇ P22, 1 ⁇ , ⁇ NULL, NULL ⁇ " to indicate that the second priority of the network slice S1 supported by the frequency corresponding to the adjacent cell 230-1 is P21, and the adjacent cell 230-1
  • the second priority of the network slice S2 supported by the corresponding frequency is P22
  • the serving cell 220 supports the network slice S1, and the serving cell 220 also supports the network slice S2.
  • the terminal device can determine based on the system information that the serving cell 220 supports the target network slice S2, determine (eg indirectly) that the frequency corresponding to the adjacent cell 230-1 supports the target network slice S2, and the frequency corresponding to the adjacent cell 230-1 supports the target network slice S2.
  • the second priority of network slice S2 is P22.
  • the system information includes a network slice corresponding to a frequency supported by a neighbor cell, a second priority of a network slice supported by a frequency corresponding to the neighbor cell, and a network slice corresponding to the frequency supported by the neighbor cell.
  • indication information wherein the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information may be SIB4 and/or SIB5.
  • the system information may be a newly defined SIB.
  • the target network slice is S2.
  • the system information can use " ⁇ S1, P21, 1 ⁇ , ⁇ S2, P22, 1 ⁇ " to indicate that the frequency corresponding to the adjacent cell 230-1 supports network slices S1 and S2, and the frequency corresponding to the adjacent cell 230-1 supports the network slice S1.
  • the second priority is P21
  • the second priority of the network slice S2 supported by the frequency corresponding to the neighbor cell 230-1 is P22
  • the serving cell 220 supports the network slice S1, and the serving cell 220 also supports the network slice S2.
  • the terminal device can determine based on the system information that the serving cell 220 supports the target network slice S2, determine (eg directly) that the frequency corresponding to the adjacent cell 230-1 supports the target network slice S2, and the frequency corresponding to the adjacent cell 230-1 supports the target network slice S2.
  • the second priority of network slice S2 is P22.
  • the system information includes the first priority of the frequency-supported network slice corresponding to the serving cell, the frequency-supported network slice corresponding to the adjacent cell, and the network slice corresponding to the frequency-supported network slice corresponding to the adjacent cell.
  • indication information wherein the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information may be SIB4 and/or SIB5.
  • the system information may be a newly defined SIB.
  • the system information may include first system information and second system information, the first system information includes the first priority of the network slice supported by the frequency corresponding to the serving cell, and the second system information includes the frequency support corresponding to the neighboring cell. and the indication information corresponding to the network slice supported by the frequency corresponding to the neighbor cell.
  • the first system information may be SIB2, and the second system information may be SIB4 and/or SIB5.
  • the system information includes a first priority of a network slice corresponding to a serving cell with frequency support, a second priority of a network slice supported by a frequency corresponding to a neighbor cell, and a frequency support corresponding to the neighbor cell.
  • the indication information corresponding to the network slice of wherein the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information may be SIB4 and/or SIB5.
  • the system information may be a newly defined SIB.
  • the system information may include first system information and second system information, the first system information includes the first priority of the network slice supported by the frequency corresponding to the serving cell, and the second system information includes the frequency support corresponding to the neighboring cell.
  • the first system information may be SIB2, and the second system information may be SIB4 and/or SIB5.
  • the system information includes a first priority of a network slice supported by a frequency corresponding to the serving cell, a network slice supported by a frequency corresponding to a neighbor cell, a second priority of a network slice supported by a frequency corresponding to the neighbor cell, and Indication information corresponding to the network slice supported by the frequency corresponding to the adjacent cell, wherein the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the adjacent cell.
  • the system information may be SIB4 and/or SIB5.
  • the system information may be a newly defined SIB.
  • the system information may include first system information and second system information, the first system information includes the first priority of the network slice supported by the frequency corresponding to the serving cell, and the second system information includes the frequency support corresponding to the neighboring cell. , the second priority of the network slice supported by the frequency corresponding to the neighbor cell, and the indication information corresponding to the network slice supported by the frequency corresponding to the neighbor cell.
  • the first system information may be SIB2
  • the second system information may be SIB4 and/or SIB5.
  • the system information may include at least one item of indication information corresponding to the network slice supported by the frequency corresponding to the neighbor cell, so that the terminal device can determine whether the serving cell supports the target network slice based on the system information.
  • the indication method is simple, and the overhead for signaling interaction is smaller.
  • the system information can be represented by the identifier of the network slice to include the network slice supported by the frequency corresponding to the serving cell.
  • the system information can be represented by the identifier of the network slice to include the corresponding frequency of the adjacent cell.
  • the identifier of the network slice can be at least one of the following: (1) S-NSSAI, (2) Slice ID (Slice ID), (3) Slice group ID (Slice group ID), (4) Access Category (Access Category, AC ), or (5) Access Identity (AI).
  • the system information may use "cell reselection priority" to indicate the first priority of the network slice supported by the frequency corresponding to the serving cell, and/or indicate that the adjacent cell corresponds to the first priority of the network slice. Second priority for network slices supported by frequency. It can be understood that if multiple network slices are involved, there is a "cell reselection priority" for the identification of each (per) network slice. Exemplarily, the "cell reselection priority" field in the system information may be used to carry the first priority of the network slice supported by the frequency corresponding to the serving cell, and/or the second priority of the network slice supported by the frequency corresponding to the adjacent cell. priority.
  • the "cell reselection priority" may correspond to the identification of the network slice.
  • the identifier of the network slice may be S-NSSAI, and the corresponding "cell reselection priority" is “S-NSSAI cell reselection priority”.
  • the identifier of the network slice may be a slice ID, and the corresponding "cell reselection priority" is “slice ID cell reselection priority”.
  • the identifier of the network slice may be a slice group ID, and the corresponding "cell reselection priority" is "Slice Group ID cell reselection priority".
  • the identifier of the network slice may be an AC, and the corresponding "cell reselection priority" is “AC cell reselection priority (Access Catergory cell reselection priority)".
  • the identifier of the network slice may be AI, and the corresponding "cell reselection priority" is “AI cell reselection priority (Access Identity cell reselection priority)”.
  • the system information may be one or more of SIB2, SIB4, SIB5 or a newly defined SIB
  • the first system information may be SIB2, SIB4, SIB5 or a new One or more of the defined SIBs
  • the second system information may be one or more of SIB2, SIB4, SIB5 or a newly defined SIB.
  • the above listed embodiments are not exhaustive, and those skilled in the art can also obtain other embodiments on this basis.
  • the above-mentioned embodiments may be combined and replaced with each other under the premise of not contradicting each other.
  • FIG. 4 shows another schematic flowchart of a method 400 for cell reselection according to an embodiment of the present disclosure.
  • the method 400 of FIG. 4 includes steps 410-430.
  • the cell to camp on may be selected from the serving cell and at least one candidate cell.
  • the serving cell supports the target network slice, based on the first priority of the target network slice supported by the frequency corresponding to the serving cell and the second priority of the target network slice supported by the frequency corresponding to the candidate cell, from The cell to be camped on is selected from the serving cell and at least one candidate cell.
  • the first priority of the target network slice supported by the frequency corresponding to the serving cell and the second priority of the target network slice supported by the frequency corresponding to the candidate cell can be obtained from the system information, as described above, and will not be repeated here.
  • FIG. 5 shows a schematic diagram of another communication system 500 according to an embodiment of the present disclosure. Based on the system 200 in FIG. 2 , the system 500 in FIG. 5 marks the information of the network slices supported by the frequency corresponding to the serving cell and the information of the network slices supported by the frequency corresponding to the neighboring cell.
  • f1: ⁇ S1, S2, P1 ⁇ in the serving cell 220 indicates that the network slices supported by the frequency f1 corresponding to the serving cell 220 are S1 and S2, and the priority of S1 supported by f1 is P1, The priority of S2 supported by f1 is also P1.
  • f2: ⁇ S1, P21 ⁇ , f2: ⁇ S2, P22 ⁇ indicates that the network slices supported by the frequency f2 corresponding to the neighboring cell 230-1 are S1 and S2, and the network slices of S1 supported by f2
  • the second priority is P21, and the second priority of S2 supported by f2 is P22.
  • f3: ⁇ S1, P31 ⁇ , f3: ⁇ S2, P32 ⁇ , f3: ⁇ S3, P33 ⁇ indicates that the network slice supported by the frequency f3 corresponding to the adjacent area 230-2 is S1, S2 and S3, and the second priority of S1 supported by f3 is P31, the second priority of S2 supported by f3 is P32, and the second priority of S3 supported by f3 is P33.
  • FIG. 5 shows the frequency f1 corresponding to the serving cell 220, the frequency f2 corresponding to the adjacent cell 230-1, and the frequency f3 corresponding to the adjacent cell 230-2.
  • the system information may include the frequency corresponding to the serving cell and/or the frequency corresponding to the neighboring cell.
  • the terminal device 210 may acquire the frequency corresponding to the serving cell and/or the frequency corresponding to the neighboring cell from other signaling, for example, from MIB or SIB1, which is not limited in the present disclosure.
  • the frequency corresponding to the serving cell and the frequency corresponding to the adjacent cell are also shown in the figures, and similar understanding and explanation should be made, which will not be repeated below.
  • FIG. 6 shows a schematic diagram of another communication system 600 according to an embodiment of the present disclosure.
  • the system 600 in FIG. 6 marks the information of the network slices supported by the frequency corresponding to the serving cell and the information of the network slices supported by the frequency corresponding to the neighboring cell.
  • f1: ⁇ S1, P1x ⁇ , f1: ⁇ S2, P1 ⁇ in the serving cell 220 indicates that the network slices supported by the frequency f1 corresponding to the serving cell 220 are S1 and S2, and the S1 supported by f1
  • the priority is P1x, and the priority of S2 supported by f1 is P1.
  • the information such as the second priority of the network slices supported by the frequencies corresponding to the adjacent cells 230-1 and 230-2 shown in FIG. 6 is the same as that in FIG. 5, and will not be repeated here.
  • the serving cell supports the target network slice
  • the second priority of the target network slice supported by the frequency is equal to the "first priority of the target network slice supported by the frequency corresponding to the serving cell", and the cell to be camped on is selected based on the first criterion. If “the second priority of the target network slice supported by the frequency corresponding to the candidate cell” is lower than "the first priority of the target network slice supported by the frequency corresponding to the serving cell", the cell to be camped on is selected based on the second criterion. Regarding the first criterion and the second criterion, it will be explained further below.
  • the target network slice is S2
  • the description will be given in conjunction with the communication system 500 in FIG. 5 and the communication system 600 in FIG. 6 as an example.
  • the frequency f1 corresponding to the serving cell 220 supports S2, and the first priority of S2 is P1.
  • the frequency f2 corresponding to the neighboring cell 230-1 supports the network slice S2, and the second priority of S2 supported by f2 is P22.
  • the frequency f3 corresponding to the neighboring cell 230-2 supports the network slice S2, and the second priority of S2 supported by f3 is P32.
  • P1 can be compared to P22 and P32, and different situations exist.
  • FIG. 7 shows a schematic flowchart of a process 700 of selecting a cell to camp on according to an embodiment of the present disclosure.
  • Process 700 shown in FIG. 7 includes:
  • the cell to be camped on based on the first criterion.
  • the first criterion may be the R criterion.
  • the R criterion is to calculate an R (rank, Rank) value for each neighboring cell and serving cell according to the signal quality of the cell, and then sort according to the size of the R value. If there are multiple neighbors that satisfy the selection criteria, the neighbor with the largest R value is selected.
  • Qmeas,s represents the signal quality of the serving cell, which is obtained by the terminal device 210 through measurement.
  • Qmeas,s may represent the reference signal received power (Reference Signal Receiving Power, RSRP) value of the serving cell.
  • Qmeas,n represents the signal quality of the adjacent cell, which is obtained by the terminal device 210 through measurement.
  • Qmeas,n may represent the RSRP value of the adjacent cell.
  • Qhyst represents the reselection hysteresis value of the serving cell. This value may be obtained by the terminal device 210 from system information, for example, obtained from SIB2. As an example, Qhyst may be carried in the cell reselection Info Common field of SIB2. It can be understood that the larger the value of Qhyst, the larger the boundary of the serving cell, and the more difficult it is to reselect to a neighboring cell.
  • QoffsetCell can be obtained from SIB3, and QoffsetCell and QoffsetFreq can be obtained from SIB4.
  • Qoffsetcell may be carried in the Intra Freq Neigh Cell Info field of SIB3.
  • QoffsetCell and QoffsetFreq may be carried in the inter-frequency carrier frequency information (Inter Freq Carrier Freq Info) field of SIB4.
  • Qoffsettemp is a calculation parameter for the first criterion (R criterion), and the parameter may be obtained by the terminal device 210 from system information, for example, may be obtained from SIB1.
  • the second criterion may be to determine a candidate cell whose cell quality is higher than that of the serving cell as the cell to be camped on.
  • the cell quality may be the RSRP of the cell.
  • a cell to camp on is selected from the serving cell and at least one candidate cell.
  • the second priority of the target network slice supported by the frequency corresponding to the candidate cell may be obtained from the system information, which is described above and will not be repeated here. Understandably, since the serving cell does not support the target network slice, the terminal device 210 cannot obtain the first priority of the target network slice supported by the frequency corresponding to the serving cell from the system information.
  • the terminal device 210 may set the first priority of the target network slice at the frequency corresponding to the serving cell to a first preset value, which is lower than The second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the first priority of the frequency corresponding to the target network slice in the serving cell can be defined by setting the first preset value, and then in the cell reselection The serving cell is taken into account.
  • the first priority of the target network slice at the frequency corresponding to the serving cell may be compared with the second priority of the target network slice supported by the frequency corresponding to the candidate cell, and The cell to be camped on is selected based on the result of the comparison. This process is similar to the process in combination with FIG. 7 in the above embodiment, and will not be repeated here.
  • a cell to camp on may be selected from at least one candidate cell.
  • the cell to be camped on may be selected from at least one candidate cell based on the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the second priority of the target network slice supported by the frequency corresponding to the candidate cell may be obtained from the system information, which is described above and will not be repeated here.
  • the candidate cell may be determined as the cell to be camped on. Conversely, if the number of at least one candidate cell is greater than or equal to 2 (ie, at least two candidate cells), the candidate cell may be selected from the at least two candidate cells by comparing the second priority of the frequency-supported network slice corresponding to the candidate cell A waiting area.
  • At least two second priorities of network slices supported by frequencies corresponding to at least two candidate cells may be compared. If the at least two second priorities of the frequency-supported network slices corresponding to the at least two candidate cells are not equal to each other, the candidate cell with the highest second priority of the frequency-supported network slices corresponding to the candidate cells is determined to be to be camped on community. If the at least two second priorities of the network slices supported by the frequencies corresponding to the at least two candidate cells are equal to each other, the cell to be camped on is selected based on the first criterion.
  • the target network slice is S2
  • the description will be given in conjunction with the example of the communication system 800 in FIG. 8 .
  • FIG. 8 shows a schematic diagram of another communication system 800 according to an embodiment of the present disclosure.
  • the system 800 in FIG. 8 marks the information of the network slice supported by the frequency corresponding to the serving cell and the information of the network slice supported by the frequency corresponding to the neighboring cell.
  • f1: ⁇ S1, P1x ⁇ in the serving cell 220 indicates that the network slice supported by the frequency f1 corresponding to the serving cell 220 is S1, and the priority of S1 supported by f1 is P1x. It can be seen that the frequency f1 corresponding to the serving cell 220 does not support the target network slice S2.
  • the information such as the second priority of the network slices supported by the frequencies corresponding to the adjacent cells 230-1 and 230-2 shown in FIG. 8 is the same as that in FIG. 5, and will not be repeated here.
  • the serving cell 220 does not support S2.
  • the frequency f2 corresponding to the neighboring cell 230-1 supports the network slice S2, and the second priority of S2 supported by f2 is P22.
  • the frequency f3 corresponding to the neighboring cell 230-2 supports the network slice S2, and the second priority of S2 supported by f3 is P32.
  • P22 can be compared with P32, and for details, reference can be made to the description of FIG. 9 .
  • FIG. 9 shows another schematic flowchart of a process 900 of selecting a cell to camp on according to an embodiment of the present disclosure.
  • the process 900 shown in FIG. 9 includes:
  • the first criterion may be the R criterion.
  • the R value of the neighboring cell 230-1 and the R value of the neighboring cell 230-2 can be calculated, and the neighboring cell with a larger R value is determined as the cell to be camped on. For example, if the R value of the neighboring cell 230-1 is greater than the R value of the neighboring cell 230-2, the neighboring cell 230-1 is determined as the cell to be camped on. If the R value of the neighboring cell 230-1 is smaller than the R value of the neighboring cell 230-2, the neighboring cell 230-2 is determined as the cell to be camped on.
  • Rn Qmeas, n ⁇ Qoffset ⁇ Qoffsettemp.
  • the neighbor cell 230-1 is determined as the cell to camp on. If P22 is lower than P32, the neighbor cell 230-2 is determined as the cell to be camped on.
  • the terminal device may only consider the frequency that supports the target network slice, and does not consider the frequency that does not support the target network slice. In this way, when the cell to be camped on is selected, comparison and selection can be performed with respect to a smaller range, which reduces the amount of calculation and improves the processing efficiency.
  • the terminal device may select a cell to camp on from a serving cell and a neighboring cell, where the neighboring cell includes at least one candidate cell.
  • the cell to be camped on may be selected based on at least one of the following: the first priority of the frequency corresponding to the serving cell of the target network slice, the second priority of the frequency corresponding to the candidate cell supporting the target network slice, and the target network slice The second priority of frequencies corresponding to non-candidate cells other than the at least one candidate cell in the neighbor cell.
  • the serving cell supports the target network slice, and all adjacent cells are candidate cells (that is, the frequencies corresponding to the adjacent cells support the target network slice)
  • the number of the target network slice supported by the frequency corresponding to the serving cell may be based on the first cell.
  • the first priority and the frequency corresponding to the candidate cell support the second priority of the target network slice. It can be understood that, in this embodiment, the first priority of the target network slice at the frequency corresponding to the serving cell is the first priority of the target network slice supported by the frequency corresponding to the serving cell.
  • the target network slice can be used in the serving cell based on the frequency corresponding to the serving cell.
  • the first priority and the frequency corresponding to the candidate cell support the second priority of the target network slice.
  • the terminal device may set the first priority of the target network slice at the frequency corresponding to the serving cell to a first preset value, where the first preset value is lower than the target network supported by the frequency corresponding to the candidate cell The second priority of the slice.
  • the neighboring cells include candidate cells and non-candidate cells, wherein the frequencies corresponding to the candidate cells support the target network slice, and the frequencies corresponding to the non-candidate cells do not support the target network slice.
  • the terminal device may support the first priority of the target network slice based on the frequency corresponding to the serving cell, the second priority of the target network slice supported by the frequency corresponding to the candidate cell, and the first priority of the target network slice in the frequency corresponding to the non-candidate cell.
  • the second priority is to select the cell to be camped on from the serving cell and neighboring cells.
  • the first priority of the target network slice at the frequency corresponding to the serving cell is the first priority of the target network slice supported by the frequency corresponding to the serving cell. Understandably, since the non-candidate cell does not support the target network slice, the terminal device cannot obtain the second priority of the target network slice supported by the frequency corresponding to the non-candidate cell from the system information.
  • the terminal device may set the second priority of the target network slice at the frequency corresponding to the non-candidate cell to a second preset value, where the second preset value is lower than the target supported by the frequency corresponding to the candidate cell Second priority for network slicing.
  • the neighboring cells include candidate cells and non-candidate cells, wherein the frequencies corresponding to the candidate cells support the target network slice, and the frequencies corresponding to the non-candidate cells do not support the target network slice.
  • the terminal device may support the second priority of the target network slice based on the first priority of the frequency corresponding to the serving cell of the target network slice, the frequency corresponding to the candidate cell, and the second priority of the frequency corresponding to the target network slice in the non-candidate cell. Priority, select the cell to be camped on from the serving cell and neighboring cells.
  • the terminal device since the serving cell and the non-candidate cell do not support the target network slice, the terminal device cannot obtain the first priority of the target network slice supported by the frequency corresponding to the serving cell from the system information, nor can it obtain the non-candidate network slice.
  • the second priority of the target network slice supported by the frequency corresponding to the candidate cell may set the first priority of the target network slice at the frequency corresponding to the serving cell to a first preset value, where the first preset value is lower than the target network supported by the frequency corresponding to the candidate cell.
  • the second priority of the slice may set the second priority of the target network slice at the frequency corresponding to the non-candidate cell to a second preset value, where the second preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell class.
  • the first preset value and the second preset value may be equal or unequal, which is not limited in the present disclosure.
  • the first preset value and the second preset value are smaller than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the first preset value and the second preset value may be the lowest value among all the first and second priority levels that are compared.
  • the first preset value and the second preset value may be equal to the lowest value of the priority value range.
  • the terminal device can set the first preset value and the second preset value to 0. In this way, when the priority is compared, the The frequencies of unsupported target network slices are considered as last-considered frequencies or completely excluded.
  • the second priority of the target network slices supported by frequencies corresponding to non-candidate cells can be defined by setting a second preset value. Further, the terminal device 210 may compare the first priority of the target network slice supported by the frequency corresponding to the serving cell with the second priority of the target network slice supported by the frequency corresponding to the neighboring cell; and select the target network slice based on the comparison result. Stay in the neighborhood.
  • the terminal device can select the to-be-reserved cell based on the target network slice, thereby ensuring that the to-be-reserved cell supports the target network slice, thereby meeting the service requirements of the terminal device.
  • FIG. 10 shows a schematic flowchart of a method 1000 for cell reselection according to an embodiment of the present disclosure.
  • the process 1000 shown in FIG. 10 includes:
  • the terminal device 210 determines whether the to-be-reserved cell satisfies the reselection condition. If so, go to 1020; otherwise, go to 1050.
  • the reselection condition is related to the second priority of the target network slice supported by the frequency corresponding to the cell to be camped on, if the second priority of the target network slice supported by the frequency corresponding to the cell to be camped on is higher than that of the serving cell.
  • the first priority of the target network slice supported by the frequency (the cell to be camped on as determined by 730 in FIG. 7 ) or if the second priority of the target network slice supported by the frequency corresponding to the cell to be camped on is higher than other candidate cells
  • the second priority of the target network slice supported by the corresponding frequency (the cell to be camped on as determined by 940 in FIG. 9 )
  • the reselection condition may also be referred to as a high-priority reselection condition.
  • the reselection condition can also be called equal priority reselection condition.
  • the reselection condition can also be called a low priority reselection condition.
  • the high-priority reselection condition determined after 730 may be: (1) if the system information (eg SIB2) of the serving cell includes the serving cell low quality threshold (Thresh Serving, LowQ ), And the duration that the terminal device 210 resides in the serving cell 220 exceeds the first duration threshold (such as 1 second or other value), and the cell to be resided satisfies Squal>Thresh X, HighQ during the first time interval; wherein, Squal represents the pending The quality of the camped cell, Thresh X, HighQ represents a high quality threshold; the first time interval may be a reselection interval, for example, represented as TreselectionRAT .
  • the system information eg SIB2
  • the serving cell low quality threshold such as 1 second or other value
  • the system information of the serving cell eg SIB2
  • the serving cell low quality threshold Thresh Serving, LowQ
  • the duration of the terminal device 210 camping in the serving cell 220 exceeds the first duration threshold (eg 1 second or other value)
  • the cell to be camped on satisfies Srxlev>Thresh X, HighP during the first time interval; wherein, Srxlev represents the quality of the cell to be camped on, Thresh X, HighP represents the high-quality threshold; wherein the first time interval can be a heavy
  • the selection interval for example represented as TreselectionRAT .
  • the equal-priority reselection condition determined after 750 may be: the duration that the terminal device 210 resides in the serving cell 220 exceeds the second duration threshold (eg, 1 second or other value), and The cell to be camped on always satisfies the maximum R value of the cell to be camped on during the second time interval, where the second time interval may be a reselection interval, for example, expressed as TreselectionRAT .
  • the second duration threshold eg, 1 second or other value
  • the low-priority reselection condition determined after 760 may be: (1) if the system information (eg SIB2) of the serving cell includes the serving cell low-quality threshold (Thresh Serving, LowQ ), And the duration that the terminal device 210 resides in the serving cell 220 exceeds a third duration threshold (such as 1 second or other value), and the serving cell satisfies Squal(s) ⁇ Thresh Serving,LowQ , and the cell to be camped on is in the third time interval Squal(n)>Thresh X, LowQ is satisfied during the period; wherein Squal(s) represents the quality of the serving cell, Squal(n) represents the quality of the cell to be camped on, and Thresh X, LowQ represents the low quality threshold; wherein the third time interval can be is the reselection interval, for example represented as TreselectionRAT .
  • the third time interval can be is the reselection interval, for example represented as TreselectionRAT .
  • the third time interval may be a reselection interval, for example, represented as TreselectionRAT .
  • thresholds also called thresholds
  • Thresh X, HighP and Thresh X, HighQ are the two quality thresholds involved in the high-priority reselection condition.
  • X can represent the frequency, that is, different frequencies can have corresponding threshold priorities.
  • the frequency f1 corresponds to The threshold Thresh f1,HighP may not be equal to the threshold Thresh f2,HighP corresponding to the frequency f2.
  • Thresh X, HighP and Thresh X, HighQ may be acquired by the terminal device 210 from system information.
  • the same-system inter-frequency threshold can be obtained from SIB4, and as an example, it can be carried in the Inter Freq Carrier Freq Info field of SIB4;
  • the inter-system threshold can be obtained from SIB5, as an example, it can be carried In the Carrier Freq EUTRA field of SIB5.
  • Thresh Serving, LowP and Thresh Serving, LowQ are two thresholds involved in the low priority reselection condition, which are the power threshold and the quality threshold of the serving cell, respectively.
  • Thresh Serving, LowP and Thresh Serving, LowQ may be acquired by the terminal device 210 from system information.
  • the threshold can be acquired from SIB2, and as an example, it can be carried in a cell reselection Serving Freq Info field of SIB2.
  • Thresh X, LowP and Thresh X, LowQ are the two thresholds involved in the low-priority reselection condition, which are the power threshold and quality threshold of the low-priority neighbors, respectively.
  • Thresh X can represent the frequency, that is, different frequencies can have corresponding
  • the threshold Thresh f1,LowQ corresponding to the frequency f1 may not be equal to the threshold Thresh f2,LowQ corresponding to the frequency f2.
  • Thresh X, LowP and Thresh X, LowQ may be acquired by the terminal device 210 from system information.
  • the same-system inter-frequency threshold can be obtained from SIB4, and as an example, it can be carried in the Inter Freq Carrier Freq Info field of SIB4; the inter-system threshold can be obtained from SIB5, as an example, it can be carried In the Carrier Freq EUTRA field of SIB5.
  • the terminal device 210 receives system information from the access network device of the cell to be camped on.
  • the system information from the access network device of the cell to be camped on may be SIB1 or SIB2, or may also be other types of system information, which is not limited in the present disclosure.
  • the system information from the access network device of the cell to be camped on may include whether the cell to be camped on is barred (barred), whether it is reserved (reserved), access level and the like.
  • the terminal device 210 may determine whether the cell to be camped on can be normally camped on based on the system information from the access network device of the cell to be camped on. If it is determined that the residency cannot be performed, go to 1050; otherwise, go to 1040.
  • the cell to be camped on can be normally camped on, go to 1040, otherwise go to 1050.
  • the system information from the access network device of the cell to be camped on indicates that the cell to be camped on is not prohibited and not reserved, it can be determined that the cell to be camped on can be normally camped on.
  • the cell to be camped on cannot be normally camped on (ie, cannot camp on)
  • go to 1050 otherwise go to 1040.
  • the system information from the access network device of the cell to be camped on contains an indication of "the cell to be camped on is prohibited" or "the cell to be camped on is reserved", it can be determined that the cell to be camped on cannot be reside.
  • the terminal device 210 reselects the cell to be camped on, thereby completing the cell reselection.
  • the terminal device 210 reselects the cell to be camped on. After that, the judgment can be re-performed from 1010 until the cell reselection is completed.
  • the process of reselecting the cells to be camped on in 1050 may include: deleting the cells to be camped on that do not meet the reselection conditions from the candidate cells, and performing 410 again.
  • the to-be-reserved cell that does not meet the reselection conditions is deleted from the adjacent cells to no longer be regarded as the adjacent cell, and then the to-be-reserved cell is selected from the updated adjacent cells. Since the process of re-selecting the cell to be camped on is similar to the above-mentioned 410, it will not be repeated in the present disclosure.
  • the terminal device 210 can select the to-be-reserved cell based on the target network slice, and then can complete the cell reselection based on the reselection conditions, which can ensure that the reselected cell can meet the service requirements on the terminal device 210 and reduce the access delay , which improves the service experience of the terminal device.
  • FIG. 11 is a schematic interaction diagram of a method 1100 for cell reselection according to an embodiment of the present disclosure.
  • FIG. 11 involves a terminal device 210 and an access network device 240, where the access network device 240 may be an access network device of a serving cell where the terminal device 210 is located.
  • the access network device 240 may be a serving access network device of the terminal device 210 .
  • the interactive signaling diagram shown in FIG. 11 is an overview, and the illustrated communication process is only exemplary and not limiting. Embodiments of the present disclosure may include interactive signaling not shown in FIG. 11 , or omit some signaling shown in FIG. 11 .
  • end device 210 determines 1110 a target network slice.
  • the target network slice may be determined through the identifier of the network slice sent by the NAS layer of the terminal device 210 to the AS layer.
  • the target network slice may be determined through the identifier of the network slice sent by the NAS layer of the terminal device 210 to the AS layer.
  • the terminal device 210 may determine 1120 at least one candidate cell based on the target network slice, wherein the frequency corresponding to the candidate cell supports the target network slice.
  • the terminal device 210 may determine at least one candidate cell based on system information from the access network device 240 .
  • the system information may include first system information and second system information.
  • the access network device 240 may send the system information, so that the terminal device 210 can receive the system information.
  • the system information may be sent by the access network device 240 in the form of broadcast, periodically or aperiodically.
  • the access network device 240 sends 1112 the first system information, so that the terminal device 210 can receive the first system information.
  • the access network device 240 sends 1114 the second system information, so that the terminal device 210 can receive the second system information.
  • the terminal device 210 may obtain the serving frequency of the serving cell in advance, which is assumed to be f1.
  • the terminal device 210 may receive another system information of the access network device 240, and learn the service frequency from the other system information.
  • the "another system information" here may be transmitted before the first system information, or may have a transmission interval shorter than that of the first system information.
  • “another system information” may be a master information block (Master Information Block, MIB) or a system information block 1 (System Information Block1, SIB1), etc., which is not limited in the present disclosure.
  • the first system information may include a first priority, denoted as P1, and used to indicate that the priority of f1 is P1. It should be noted that although P1 is referred to as the first priority in the present disclosure, the "first” is not a limitation on the priority, but is only used as a distinction between different priorities.
  • the first system information may further include a network slice supported by a frequency corresponding to the serving cell (that is, a serving frequency) and/or a first priority of a network slice supported by a frequency corresponding to the serving cell. .
  • the first system information may further include network slices supported by a frequency corresponding to the serving cell (ie, a serving frequency), such as an identifier of the network slice.
  • the system information may use " ⁇ S1, S2 ⁇ " to indicate that the network slices supported by the serving cell 220 are S1 and S2.
  • the first system information may further include the first priority of the network slice supported by the frequency corresponding to the serving cell (ie, the serving frequency).
  • the correspondence between the order of the first priority in the system information and the network slice may be pre-defined.
  • the system information may use "P1x, P1, NULL (null)" to indicate that the first priority of the network slice supported by the frequency corresponding to the serving cell is P1x, P1 and null, and indirectly includes the frequency corresponding to the serving cell.
  • the supported network slices are S1 and S2.
  • the first system information may further include a network slice (eg, identifier) supported by the frequency corresponding to the serving cell and a first priority of the network slice supported by the frequency corresponding to the serving cell.
  • the system information may use " ⁇ S1, P1x ⁇ , ⁇ S2, P1 ⁇ " to indicate that the network slices supported by the frequency corresponding to the serving cell are S1 and S2, and the first priority of S1 supported by the frequency corresponding to the serving cell is P1x, and the first priority of S2 supported by the frequency corresponding to the serving cell is P1.
  • the first system information may further include the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the second system information may include the frequency-supported network slice corresponding to the neighbor cell and/or the second priority of the frequency-supported network slice corresponding to the neighbor cell.
  • the second system information includes a network slice supported by a frequency corresponding to a neighboring cell, and indication information corresponding to a network slice supported by a frequency corresponding to the neighboring cell, wherein the indication information is used to indicate Whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the indication information may have a preset length, such as one or more bits. Taking one bit (1 bit) as an example, if the indication information is a first value, it may indicate that the serving cell supports the corresponding network slice, and if the indication information is a second value, it indicates that the serving cell does not support the corresponding network slice. In one example, the first value is 1 and the second value is 0. In another example, the first value is 0 and the second value is 1. It can be understood that the slice information of the serving cell may also be indicated in other manners, which will not be listed in this disclosure.
  • the indication information is 1 to indicate support, and the indication information is 0 to indicate no support.
  • the system information can use " ⁇ S1, 1 ⁇ , ⁇ S2, 1 ⁇ " to indicate that the network slices supported by the frequencies corresponding to the neighbor cell 230-1 are S1 and S2, and the serving cell 220 supports the network slice S1, and the serving cell 230-1 supports the network slice S1. 220 also supports network slice S2.
  • the second system information includes the second priority of the network slice supported by the frequency corresponding to the adjacent cell, and the indication information corresponding to the network slice supported by the frequency corresponding to the adjacent cell, wherein the The indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the correspondence between the order of the second priority in the system information and the network slice may be pre-defined.
  • the system information may use " ⁇ P21, 1 ⁇ , ⁇ P22, 1 ⁇ , ⁇ NULL, NULL ⁇ " to indicate that the second priority of the network slice S1 supported by the frequency corresponding to the neighbor cell 230-1 is P21, The second priority of the network slice S2 supported by the frequency corresponding to the zone 230-1 is P22, and the serving cell 220 supports the network slice S1, and the serving cell 220 also supports the network slice S2.
  • the second system information includes the network slice supported by the frequency corresponding to the adjacent cell, the second priority of the network slice supported by the frequency corresponding to the adjacent cell, and the network slice supported by the frequency corresponding to the adjacent cell.
  • Indication information corresponding to a network slice wherein the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell. It is assumed that the indication information is 1 to indicate support, and the indication information is 0 to indicate no support.
  • the system information can use " ⁇ S1, P21, 1 ⁇ , ⁇ S2, P22, 1 ⁇ " to indicate that the frequency support network slices S1 and S2 corresponding to the adjacent cell 230-1, and the frequency support corresponding to the adjacent cell 230-1
  • the second priority of the network slice S1 is P21
  • the second priority of the network slice S2 supported by the frequency corresponding to the neighboring cell 230-1 is P22
  • the serving cell 220 supports the network slice S1, and the serving cell 220 also supports the network slice S2 .
  • the second system information may further include the first priority of the network slice supported by the frequency corresponding to the serving cell.
  • this embodiment of the present disclosure does not limit the information element structure of slice information (including frequency, network slice, and priority), for example, the slice may be used as an index, or the frequency may be used as an index, and so on.
  • a slice may be used as an index, as shown in Table 1 as an illustration.
  • the slice information of the neighboring cell is shown in the form of a slice list, including a slice identifier and a frequency list, and further includes a frequency identifier and a frequency priority in the frequency list. That is, it can be shown from the dimension of the slice.
  • Table 1 is only for illustration, and does not constitute a limitation to the embodiments of the present disclosure.
  • the priority may be a cell reselection priority (cell Reselection Priority), optionally, it may further include sub-priorities, such as Cell Reselection Sub Priority.
  • the frequency may be used as an index, which may be as shown in Table 2 as an illustration.
  • the slice information of the neighboring cells is shown in the form of a frequency list, including a frequency identifier and a slice list, and further including a slice identifier and slice priority in the slice list. That is, it can be shown from the dimension of frequency.
  • Table 2 is only for illustration, and does not constitute a limitation to the embodiments of the present disclosure.
  • the priority may be a cell reselection priority (cell Reselection Priority), optionally, it may further include sub-priorities, such as Cell Reselection Sub Priority.
  • the neighboring cells may be intra-system and inter-frequency cells or may be inter-system cells.
  • it can have the same priority.
  • the first system information may be SIB2
  • the second system information may be SIB4 and/or SIB5.
  • SIB4 includes slice information of the first type of adjacent cells (similar to system inter-frequency adjacent cells)
  • SIB5 includes the second type of adjacent cells.
  • Slice information of class neighbors such as inter-system neighbors.
  • the present disclosure is not limited to this.
  • the first system information may be one or more of SIB2, SIB4, SIB5 or a newly defined SIB
  • the second system information may be one or more of SIB2, SIB4, SIB5 or a newly defined SIB or more.
  • the first system information and the second system information may be combined into one system information, in this case, 1112 and 1114 in FIG. 11 become one step, wherein the system information may be SIB2, SIB4, SIB5 or one or more of the newly defined SIBs.
  • 1112 may be performed before 1110, or alternatively may be performed in parallel with 1110 implement.
  • 1114 may be performed before or after 1110 or in parallel with 1110.
  • terminal device 210 may determine 1120 at least one candidate cell based on system information.
  • the at least one candidate cell may be determined based on the second system information.
  • all adjacent cells deployed on the frequency may be used as candidate cells, that is, all adjacent cells deployed on the frequency belong to candidate cells. For example, if the first frequency supports the target network slice, all cells deployed on the first frequency belong to candidate cells. If the second frequency does not support the target network slice, all cells deployed on the second frequency do not belong to candidate cells.
  • the frequency corresponding to the candidate cell determined in 1120 supports the target network slice. It can be understood that the number of candidate cells determined in 1120 may be one or more.
  • terminal device 210 may perform 1130 cell reselection based on at least one candidate cell.
  • the terminal device 210 may select a cell to be camped on based on at least one candidate cell, and then complete cell reselection based on the cell to be camped on.
  • the terminal device 210 may select the cell to be camped on based on at least one candidate cell, determine whether the cell to be camped satisfies the reselection condition, and reselect the cell to the reselection condition if the cell to be camped satisfies the reselection condition. A waiting area.
  • the terminal device 210 may select the cell to camp on from the serving cell and at least one candidate cell. In another implementation manner, the terminal device 210 may select a cell to camp on from at least one candidate cell. In yet another implementation manner, the terminal device 210 may select a cell to camp on from a serving cell and a neighboring cell, where the neighboring cell includes at least one candidate cell.
  • the embodiments of the present disclosure can be applied to two different situations: (1) Scenario 1, the network slicing supported by frequency is equivalent to the network slicing supported by the cells deployed on the frequency, that is, the network slicing supported by frequency does not need to distinguish between cells, which is abbreviated as Does not distinguish the situation of the cell.
  • This situation can also be referred to as having a bound relationship between slices and frequencies, that is, for a cell, it is only necessary to determine the network slice supported by the corresponding frequency, and it is not necessary to distinguish between cells.
  • the frequencies of two different cells are the same, the network slices supported by the two different cells are also the same, which can be collectively expressed as the network slices supported by the frequencies.
  • the network slicing supported by frequency is not necessarily equivalent to the network slicing supported by cells deployed on the frequency, that is, the network slicing supported by frequency needs to distinguish cells, which is referred to as the case of distinguishing cells for short.
  • This situation can also be referred to as a slice not bound to a frequency, that is, for a cell, its corresponding frequency may support more network slices than the cell supports, that is, it is necessary to distinguish between cells. In this case, even though the frequencies of the two different cells are the same, the network slices supported by the two different cells may be different.
  • FIG. 12 shows a schematic diagram of a slice deployment scenario 1200 according to an embodiment of the present disclosure.
  • four different cells are included, namely cell 1210 , cell 1220 , cell 1230 and cell 1240 .
  • frequency F1 supports network slice S1 and does not distinguish between cells.
  • the frequencies corresponding to the cell 1210 and the cell 1220 are both F1
  • the network slice supported by the cell 1210 is S1
  • the network slice supported by the cell 1220 is also S1.
  • the slices supported by the cell are equivalent to the slices supported by the frequency corresponding to the cell.
  • frequency F2 supports network slice S1 and network slice S2, and distinguishes cells.
  • the frequencies corresponding to cell 1230 and cell 1240 are both F2, but the network slice supported by cell 1230 is S1, while the network slices supported by cell 1240 are S1 and S2. It can be seen that in the case of distinguishing cells, for such a cell (eg, cell 1230 or cell 1240), the slice supported by the cell cannot be equivalent to the slice supported by the frequency corresponding to the cell.
  • FIG. 12 is only for illustration, and should not be construed as a limitation on the embodiments of the present disclosure.
  • the case 1 is hereinafter referred to as the case of not distinguishing cells, and the case 2 is abbreviated as the case of distinguishing the cells.
  • the candidate cell supports the target network slice
  • the to-be-reserved cell selected in 1130 also supports the target network slice.
  • the cell to be camped selected in 1130 does not necessarily support (may support, also may not be supported) target network slice. Therefore, for different situations, after the cell to be camped on is selected in 1130, the process of cell reselection is not exactly the same.
  • the process of further cell reselection by the terminal device 210 may refer to the above description in conjunction with FIG. 10 , which is not repeated here for brevity.
  • FIG. 13 shows another schematic flowchart of a method 1300 for cell reselection according to an embodiment of the present disclosure.
  • the process 1300 shown in FIG. 13 includes:
  • the terminal device 210 may determine whether the cell to be camped on satisfies the reselection condition. If so, go to 1320; otherwise go to 1360.
  • the reselection condition is related to the second priority of the target network slice supported by the frequency corresponding to the cell to be camped on.
  • the reselection condition and the specific implementation of 1310 reference may be made to the above description in conjunction with 1010 in FIG. 10 . , and will not be repeated here for brevity.
  • the terminal device 210 may receive third system information from the access network device of the cell to be camped on.
  • the third system information includes indication information of whether the to-be-reserved cell supports the target network slice.
  • the third system information in 1320 comes from the access network device of the cell to be camped on, which is different from the access network device 240 of the serving cell shown in FIG. 2 .
  • the third system information comes from the access network device (not shown in the figure) of the neighboring cell 230-1. If the selected cell to be camped on is the neighbor cell 230-2, the third system information comes from the access network device (not shown in the figure) of the neighbor cell 230-2.
  • the third system information may be SIB1 or SIB2, or may also be other system information, which is not limited in the present disclosure.
  • the terminal device 210 determines, based on the third system information, whether the cell to be camped on supports the target network slice. If supported, go to 1340, otherwise go to 1360.
  • the third system information may include an identifier of a network slice supported by the cell to camp on, so that the terminal device 210 may learn whether the cell to camp on supports the target network slice.
  • the terminal device 210 may determine whether the cell to be camped on can be normally camped on based on the third system information. If it is determined that the residency cannot be performed, go to 1360; otherwise, go to 1350.
  • the third system information may further include whether the cell to be camped on is barred (barred), whether it is reserved (reserved), an access level, and the like.
  • the cell to be camped on can be normally camped on, go to 1350, otherwise go to 1360.
  • the third system information indicates that the cell to be camped on is not prohibited and not reserved, it can be determined that the cell to be camped on can be normally camped on.
  • the cell to be camped on cannot be normally camped on (ie, cannot camp on)
  • go to 1360 otherwise go to 1350.
  • the third system information includes an indication of "the cell to be camped on is prohibited" or "the cell to be camped on is reserved", it can be determined that the cell to be camped on cannot be camped on.
  • the terminal device 210 can reselect the cell to be camped on, thereby completing the cell reselection.
  • the terminal device 210 may reselect the cell to camp on. After that, the judgment can be re-performed from 1310 until the cell reselection is completed.
  • the process of reselecting the cells to be camped on in 1360 may include: deleting the cells to be camped on that do not meet the reselection conditions from the candidate cells, and performing 1130 again.
  • the to-be-reserved cell that does not meet the reselection conditions is deleted from the adjacent cells to no longer be regarded as the adjacent cell, and then the to-be-reserved cell is selected from the updated adjacent cells. Since the process of re-selecting the cell to be camped on is similar to the above-mentioned 1130, it will not be repeated in this disclosure.
  • the third system information can include information indicating whether network slicing is supported, which can prevent the terminal device 210 from camping in a candidate cell that does not support the target network slicing, ensure that services after camping can be performed normally, and reduce access The delay improves the service experience of the terminal device.
  • the terminal device determines the candidate cell based on the target network slice, and selects the cell to be camped on from the candidate cells whose corresponding frequencies support the target network slice, instead of directly using all neighboring cells as candidate cells, on the one hand
  • the range of candidate cells can be narrowed, making it more efficient to determine the cells to be camped on; on the other hand, since the frequencies corresponding to the candidate cells support the target network slice, the cells to be camped determined during the cell reselection process support the target network slice, thereby enabling It meets the service requirements of the terminal device, reduces the access delay, and improves the service experience.
  • FIG. 14 shows another schematic interaction diagram of a method 1400 for cell reselection according to an embodiment of the present disclosure.
  • FIG. 14 involves a terminal device 210 and an access network device 240, where the access network device 240 is an access network device of a serving cell where the terminal device 210 is currently located.
  • Method 1400 in FIG. 14 includes 1410 and 1420.
  • the terminal device 210 obtains priority information of the network slice.
  • the access network device 240 may send the priority information of the network slice supported by the frequency corresponding to the neighboring cell to the terminal device 210 .
  • the terminal device 210 may acquire the priority information of the network slice supported by the frequency corresponding to the neighbor cell. It is understandable that there may be more than one network slice supported by the frequency corresponding to the adjacent cell, and accordingly, priority information of one or more network slices supported by the frequency corresponding to the adjacent cell may be obtained.
  • terminal device 210 may receive system information from access network device 240, the system information including priority information (eg, second priority) of network slices supported by frequencies corresponding to neighbor cells.
  • priority information eg, second priority
  • the system information may include a network slice (eg, identification) supported by the frequency corresponding to the neighbor cell, and the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • a network slice eg, identification
  • the system information includes the network slice supported by the frequency corresponding to the adjacent cell, the second priority of the network slice supported by the frequency corresponding to the adjacent cell, and the indication information corresponding to the network slice supported by the frequency corresponding to the adjacent cell , where the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information further includes the first priority of the frequency corresponding to the serving cell.
  • the network slice supported by the frequency corresponding to the serving cell has the first priority.
  • system information may further include the network slice supported by the frequency corresponding to the serving cell and/or the first priority of the network slice supported by the frequency corresponding to the serving cell.
  • the system information may include first system information and second system information. It can be understood that the first system information and the second system information may be carried in the same message and sent, or may be carried in different messages and sent. It can be understood that the information of the first system and the second system may be sent to the terminal device 210 at the same time or not at the same time.
  • the first system information may include priority information of the frequency corresponding to the serving cell, such as the first priority.
  • the second system information may include the identifier of the network slice supported by the frequency corresponding to the adjacent cell, the second priority of the network slice supported by the frequency corresponding to the adjacent cell, and the indication information corresponding to the network slice supported by the frequency corresponding to the adjacent cell.
  • the indication information is used to indicate whether the serving cell supports "network slice supported by the frequency corresponding to the neighbor cell".
  • the first system information may include an identifier of the network slice supported by the frequency corresponding to the serving cell, and the first priority of the network slice supported by the frequency corresponding to the serving cell.
  • the second system information may include an identifier of the network slice supported by the frequency corresponding to the adjacent cell, and the second priority of the network slice supported by the frequency corresponding to the adjacent cell.
  • the first system information may include SIB1 and/or SIB2.
  • the second system information may include SIB4 and/or SIB5.
  • the frequencies corresponding to the adjacent cells may include intra-system inter-frequency and/or inter-system frequency.
  • the intra-system inter-frequency may be a different NR frequency of the NR system
  • the inter-RAT frequency may be an inter-RAT frequency.
  • the terminal device 210 may acquire corresponding priority information based on the target network slice.
  • the terminal device 210 may determine the network slice corresponding to the service to be initiated as the target network slice; and based on the target network slice, determine the frequency of supporting the target network slice.
  • the terminal device 210 may determine the frequency at which the target network slice can be accessed, or, in other words, may determine the frequency at which the target network slice is deployed. Further, the terminal device 210 may obtain the priority of the target network slice for the frequency.
  • the terminal device 210 performs cell reselection based on the priority information of the network slice.
  • the terminal device 210 may perform cell reselection based on the acquired priority information of the network slice supported by the frequency corresponding to the neighbor cell.
  • the terminal device 210 when the terminal device 210 needs to initiate a service, it can perform cell reselection.
  • the service to be initiated may correspond to the target network slice. Understandably, since different network slices can meet different service requirements, when the services to be initiated are different, the corresponding network slices may be different.
  • the network slice corresponding to the service to be initiated is the target network slice, or may be called the desired slice; correspondingly, the service may be called slice service or slice communication.
  • the terminal device 210 may perform cell reselection based on the second priority of the target network slice supported by the frequency corresponding to the candidate cell in the neighboring cell, wherein the frequency corresponding to the candidate cell supports the target network slice. That is, for neighbors, only the frequencies of neighbors that support the target network slice may be considered, and the frequencies of neighbors that do not support the target network slice may not be considered.
  • the terminal device 210 may base on the first priority of the frequency-supported target network slice corresponding to the serving cell and the second priority of the frequency-supported target network slice corresponding to the candidate cell to perform cell reselection. That is to say, when performing cell reselection, only the adjacent cell frequencies that support the target network slice and the frequency corresponding to the serving cell (ie, the serving frequency) may be considered, and the adjacent cell frequencies that do not support the target network slice may not be considered.
  • the serving cell and the candidate cell may be selected from the serving cell and the candidate cell based on the first priority of the target network slice supported by the frequency corresponding to the serving cell and the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the cell to be camped on; if the cell to be camped on satisfies the reselection conditions, the cell to be camped on is reselected.
  • the terminal device may perform cell reselection based on the second priority of the target network slice supported by the frequency corresponding to the candidate cell. That is to say, when performing cell reselection, only the frequencies of adjacent cells that support the target network slice may be considered, and the frequencies of adjacent cells that do not support the target network slice may not be considered.
  • the to-be-reserved cell may be selected from the candidate cells based on the second priority of the target network slice supported by the frequency corresponding to the candidate cell; if the to-be-reserved cell satisfies the re-selection condition, the cell to be re-selected The cell to be camped on.
  • the terminal device 210 may be based on the first priority of the target network slice supported by the frequency corresponding to the serving cell, the second priority of the target network slice supported by the frequency corresponding to the candidate cell in the adjacent cell, and the adjacent Cell reselection is performed according to the second priority of the target network slice supported by the frequency corresponding to the non-candidate cell except the candidate cell in the zone.
  • the neighboring cells include candidate cells and non-candidate cells, wherein the frequencies corresponding to the candidate cells support the target network slice, and the frequencies corresponding to the non-candidate cells do not support the target network slice.
  • the second priority of the target network slice supported by the frequency corresponding to the candidate cell can be obtained, but since the frequency corresponding to the non-candidate cell does not support the target network slice, the target network slice supported by the frequency corresponding to the non-candidate cell cannot be obtained.
  • the terminal device 210 may set the second priority of the target network slice supported by the frequency corresponding to the non-candidate cell to a second preset value, and the second preset value is lower than the frequency supported by the candidate cell. The second priority of the target network slice.
  • the frequencies corresponding to different non-candidate cells may have the same or different second preset values, and only need to be lower than the frequency support corresponding to each candidate cell.
  • the second priority of the target network slice may be understood that if the number of frequencies corresponding to non-candidate cells is multiple, then the frequencies corresponding to different non-candidate cells may have the same or different second preset values, and only need to be lower than the frequency support corresponding to each candidate cell. The second priority of the target network slice.
  • the terminal device 210 may set the first priority of the target network slice supported by the frequency corresponding to the serving cell to a first preset value, and the first preset value is lower than the target supported by the frequency corresponding to the candidate cell. Second priority for network slicing.
  • the serving cell 220 does not support the target network slice S2
  • first preset value and the second preset value may be equal or unequal, which is not limited in the present disclosure.
  • FIG. 14 for the process of performing cell reselection based on the first priority and the second priority, reference may be made to the above related descriptions in conjunction with FIG. 3 to FIG. 13 , which are not repeated here for brevity.
  • cell reselection may be further performed based on the reselection condition.
  • reference may be made to the embodiment described above in conjunction with FIG. 10 or FIG. 13 , and details are not repeated here for brevity.
  • FIG. 15 shows a schematic flowchart of an information transmission method 1500 according to an embodiment of the present disclosure.
  • Method 300 may be performed by an access network device, such as access network device 240 in FIG. 2 .
  • the method 1500 shown in FIG. 15 may include steps 1510 and 1520 .
  • the access network device determines system information, where the system information includes at least one of the following: a network slice supported by the frequency corresponding to the serving cell, a first priority of the network slice supported by the frequency corresponding to the serving cell, and a frequency corresponding to a neighboring cell Supported network slice, or the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the access network device sends the system information.
  • the system information may include first system information and second system information, wherein the first system information includes a network slice supported by a frequency corresponding to the serving cell and/or a first priority of a frequency corresponding to the serving cell, wherein the second The system information includes the frequency-supported network slice corresponding to the neighbor cell and/or the second priority of the frequency-supported network slice corresponding to the neighbor cell.
  • the system information may include: the first priority of the network slice supported by the frequency corresponding to the serving cell, the network slice supported by the frequency corresponding to the neighbor cell, and the second priority of the network slice supported by the frequency corresponding to the neighbor cell class.
  • the system information may include: the first priority of the frequency corresponding to the serving cell, the network slice supported by the frequency corresponding to the neighbor cell, and the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information further includes: indication information corresponding to the network slice supported by the frequency corresponding to the adjacent cell, where the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the adjacent cell.
  • the system information includes a network slice, which may include: an identifier of the network slice, where the identifier of the network slice includes at least one of the following: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • the access network device may send the system information to the terminal device in the form of broadcasting.
  • the information transmission method 1500 of FIG. 15 involves the transmission of system information, which may be used in a cell reselection process of a terminal device. It is understandable that for the relevant descriptions of the system information, the first system information, the second system information, etc., reference may be made to the above embodiments in conjunction with FIG. 3 , which are not repeated here for brevity.
  • the terminal device performs cell reselection based on the priority information of network slices supported by frequencies corresponding to neighboring cells, and fully considers different priorities of different network slices, thereby ensuring that the reselected cell satisfies the terminal requirements.
  • the business requirements at the device reduce the access delay and improve the service experience.
  • FIG. 16 shows a schematic block diagram of a communication apparatus 1600 according to an embodiment of the present disclosure.
  • the apparatus 1600 may be implemented at the terminal device 210, or may be implemented as a chip or a system of chips in the terminal device 210, and the scope of the present disclosure is not limited in this regard.
  • the apparatus 1600 may include a first determination unit 1610 , a second determination unit 1620 and a cell reselection unit 1630 .
  • the first determining unit 1610 may be configured to determine the target network slice.
  • the second determining unit 1620 may be configured to determine at least one candidate cell based on the target network slice, and the frequency corresponding to the candidate cell supports the target network slice.
  • the selection unit 1630 may be configured to perform cell reselection based on at least one candidate cell.
  • the apparatus 1600 may further include a receiving unit 1602 .
  • the receiving unit 1602 may be configured to: receive first system information from an access network device of a serving cell where the communication apparatus 1600 is located, wherein the first system information includes a frequency corresponding to the serving cell The supported network slice and/or the first priority of the network slice supported by the frequency corresponding to the serving cell.
  • the first system information further includes the second priority of the network slice supported by the frequency corresponding to the neighbor cell.
  • the receiving unit 1602 may be configured to: receive second system information from the access network device of the serving cell where the communication apparatus 1600 is located, wherein the second system information includes the frequency supported by the frequency corresponding to the neighboring cell.
  • the second priority of the network slice and/or the network slice supported by the frequency corresponding to the adjacent cell the second system information further includes indication information corresponding to the network slice supported by the frequency corresponding to the adjacent cell, wherein the indication information It is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the second system information further includes: the first priority of the network slice supported by the frequency corresponding to the serving cell.
  • the second determining unit 1620 may be configured to: determine the at least one candidate cell from the neighbor cell based on the network slice corresponding to the neighbor cell with the frequency support and the target network slice.
  • the neighbor cell belongs to the candidate cell.
  • the cell reselection unit 1630 may include: a selection subunit 1632, configured to select a cell to be camped on based on the at least one candidate cell; and a determination subunit 1634, configured to determine the to-be-reserved cell Whether the cell satisfies the reselection condition; the reselection subunit 1636 is configured to reselect to the to-be-reserved cell if the to-be-reserved cell satisfies the reselection condition.
  • the selection subunit 1632 may be configured to: select the to-be-camped on from the serving cell and the at least one candidate cell in the case that the serving cell supports the target network slice community.
  • the selecting subunit 1632 is configured to select the to-be-camped cell from the at least one candidate cell in the case that the serving cell does not support the target network slice.
  • the selection subunit 1632 may be configured to: select the to-be-reserved cell from the serving cell and neighboring cells based on at least one of the following: the target network slice corresponds to the serving cell The first priority of the frequency of the candidate cell, the second priority of the target network slice supported by the frequency corresponding to the candidate cell, or the non-candidate of the target network slice in the neighboring cell except the at least one candidate cell The second priority of the target network slice supported by the frequency corresponding to the cell.
  • a setting unit 1622 may also be included, configured to: in the case that the serving cell does not support the target network slice, set the target network slice at the first frequency of the frequency corresponding to the serving cell.
  • a priority is set as a first preset value, wherein the first preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the setting unit 1622 is configured to: for a non-candidate cell in the neighboring cell except for the at least one candidate cell, slice the target network at a frequency corresponding to the non-candidate cell.
  • the second priority is set to a second preset value, wherein the second preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the reselection subunit 1636 may be configured to: receive third system information from an access network device of the to-be-reserved cell, where the third system information includes whether the to-be-reserved cell is Indication information of supporting the target network slice; in the case that the third system information indicates that the to-be-reserved cell supports the target network slice, reselect to the to-be-reserved cell.
  • the network slice has an identification including at least one of: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • the apparatus 1600 in FIG. 16 may be implemented as a terminal device 210, or may be implemented as a chip or a chip system in the terminal device 210, which is not limited in this embodiment of the present disclosure.
  • the apparatus 1600 in FIG. 16 can be used to implement the various processes described above in conjunction with the terminal device 210 in FIG. 3 to FIG. 15 , which are not repeated here for brevity.
  • FIG. 17 shows a schematic block diagram of a communication apparatus 1700 according to an embodiment of the present disclosure.
  • the apparatus 1700 may be implemented at the terminal device 210, or may be implemented as a chip or a system of chips in the terminal device 210, and the scope of the present disclosure is not limited in this regard.
  • the apparatus 1700 may include an acquisition unit 1710 and a cell reselection unit 1720 .
  • the obtaining unit 1710 may be configured to obtain priority information of network slices supported by frequencies corresponding to the neighbor cells.
  • the cell reselection unit 1720 may be configured to perform cell reselection based on the priority information of the network slice supported by the frequency corresponding to the neighbor cell.
  • the obtaining unit 1710 may be configured to: receive system information from an access network device of a serving cell where the communication apparatus 1700 is located, where the system information includes a second number of network slices supported by frequencies corresponding to the neighboring cells. priority.
  • the system information includes the second priority of the frequency-supported network slice corresponding to the neighbor cell, and indication information corresponding to the frequency-supported network slice corresponding to the neighbor cell, wherein the indication information is used to indicate Whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information includes a frequency-supported network slice corresponding to the adjacent cell, a second priority of the frequency-supported network slice corresponding to the adjacent cell, and indication information corresponding to the frequency-supported network slice corresponding to the adjacent cell,
  • the indication information is used to indicate whether the serving cell supports the network slice supported by the frequency corresponding to the neighbor cell.
  • the system information further includes the first priority of the frequency corresponding to the serving cell.
  • the network slice supported by the frequency corresponding to the serving cell has the first priority.
  • system information further includes the network slice supported by the frequency corresponding to the serving cell and the first priority of the network slice supported by the frequency corresponding to the serving cell.
  • the cell reselection unit 1720 may be configured to: based on the target network supported by the frequency corresponding to the candidate cell in the neighbor cell The second priority of the slice is for cell reselection, wherein the frequency corresponding to the candidate cell supports the target network slice.
  • the cell reselection unit 1720 may be configured to: based on the first priority of the target network slice supported by the frequency corresponding to the serving cell, and The second priority of the target network slice supported by the frequency corresponding to the candidate cell, select the cell to be camped on from the serving cell and the candidate cell; in the case that the cell to be camped on satisfies the reselection condition, Reselect the cell to be camped on.
  • the cell reselection unit 1720 may be configured to: based on the second frequency of the target network slice supported by the frequency corresponding to the candidate cell Priority, select the cell to be camped on from the candidate cells; if the cell to be camped on satisfies the reselection condition, reselect the cell to be camped on.
  • the cell reselection unit 1720 is configured to: select the to-be-reserved cell from a serving cell and a neighboring cell based on at least one of the following: the target network slice is at a frequency corresponding to the serving cell The first priority, the second priority of the target network slice supported by the frequency corresponding to the candidate cell in the neighbor cell, or the target network slice corresponding to a non-candidate cell other than the candidate cell in the neighbor cell The second priority of the frequency is used for cell reselection.
  • a setting unit 1712 is further included, configured to: in the case that the serving cell does not support the target network slice, set the target network slice at the first frequency corresponding to the serving cell.
  • the priority is set to a first preset value, wherein the first preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the setting unit 1712 is configured to: for non-candidate cells in the neighboring cells except the candidate cell, slice the target network at a second frequency corresponding to the non-candidate cell
  • the priority is set to a second preset value, wherein the second preset value is lower than the second priority of the target network slice supported by the frequency corresponding to the candidate cell.
  • the cell reselection unit 1720 may be configured to: receive third system information from an access network device of the to-be-reserved cell, where the third system information includes whether the to-be-reserved cell is Indication information of supporting the target network slice; in the case that the third system information indicates that the to-be-reserved cell supports the target network slice, reselect to the to-be-reserved cell.
  • the network slice has an identification including at least one of: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • the apparatus 1700 in FIG. 17 may be implemented as a terminal device 210, or may be implemented as a chip or a chip system in the terminal device 210, which is not limited in this embodiment of the present disclosure.
  • the apparatus 1700 in FIG. 17 can be used to implement the various processes described above in conjunction with the terminal device 210 in FIG. 3 to FIG. 15 , and details are not repeated here for brevity.
  • FIG. 18 shows a schematic block diagram of a communication apparatus 1800 according to an embodiment of the present disclosure.
  • the apparatus 1800 may be implemented at the access network device 240, or may be implemented as a chip or a system of chips in the access network device 240, and the scope of the present disclosure is not limited in this regard.
  • the apparatus 1800 may include a determining unit 1810 and a sending unit 1820 .
  • the determining unit 1810 is configured to determine system information
  • the transmitting unit 1820 is configured to transmit the system information.
  • the system information includes at least one of the following: the network slice supported by the frequency corresponding to the serving cell, the first priority of the network slice supported by the frequency corresponding to the serving cell, the network slice supported by the frequency corresponding to the adjacent cell, or the network slice corresponding to the adjacent cell.
  • the frequency of supported network slices with the second priority is the following: the network slice supported by the frequency corresponding to the serving cell, the first priority of the network slice supported by the frequency corresponding to the serving cell, the network slice supported by the frequency corresponding to the adjacent cell, or the network slice corresponding to the adjacent cell.
  • the system information may include first system information and second system information, wherein the first system information includes the network slice supported by the frequency corresponding to the serving cell and/or the first priority of the frequency corresponding to the serving cell , wherein the second system information includes the network slice supported by the frequency corresponding to the adjacent cell and/or the second priority of the network slice supported by the frequency corresponding to the adjacent cell.
  • the sending unit 1820 may include a first sending unit 1822 and a second sending unit 1824, wherein the first sending unit 1822 is configured to send the first system information, and the second sending unit 1824 is configured to send the second system information.
  • the system information further includes: indication information corresponding to a network slice supported by a frequency corresponding to the adjacent cell, where the indication information is used to indicate whether the serving cell supports the network slice corresponding to the adjacent cell Frequency supported network slices.
  • the network slice has an identification including at least one of: S-NSSAI, slice ID, slice group ID, access category, or access identity.
  • the apparatus 1800 in FIG. 18 may be implemented as the access network device 240, or may be implemented as a chip or a chip system in the access network device 240, which is not limited in this embodiment of the present disclosure.
  • the apparatus 1800 in FIG. 18 can be used to implement the various processes described above in conjunction with the access network device 240 in FIG. 3 to FIG. 15 , which will not be repeated here for brevity.
  • FIG. 19 shows a simplified block diagram of an example apparatus 1900 according to an embodiment of the present disclosure.
  • the apparatus 1900 may be used to implement the terminal device 210 and the access network device 240 as shown in FIG. 2 .
  • the apparatus 1900 includes one or more processors 1910 , one or more memories 1920 coupled to the processors 1910 , and a communication module 1940 coupled to the processors 1910 .
  • the communication module 1940 may be used for two-way communication.
  • the communication module 1940 may have at least one communication interface for communication.
  • Communication interfaces may include any interface necessary to communicate with other devices.
  • the processor 1910 may be of any type suitable for the local technical network, and may include, but is not limited to, at least one of the following: a general purpose computer, a special purpose computer, a microcontroller, a Digital Signal Processor (DSP), or a control-based One or more of the multi-core controller architectures of the server.
  • the apparatus 1900 may have multiple processors, such as application specific integrated circuit chips, that are temporally slaved to a clock synchronized with the main processor.
  • Memory 1920 may include one or more non-volatile memories and one or more volatile memories.
  • non-volatile memory include, but are not limited to, at least one of the following: Read-Only Memory (ROM) 1924, Erasable Programmable Read Only Memory (EPROM), flash memory, hard disk , Compact Disc (CD), Digital Versatile Disc (DVD) or other magnetic and/or optical storage.
  • volatile memory include, but are not limited to, at least one of the following: Random Access Memory (RAM) 1922, or other volatile memory that does not persist for the duration of a power outage.
  • RAM Random Access Memory
  • Computer program 1930 includes computer-executable instructions for execution by associated processor 1910 .
  • Program 1930 may be stored in ROM 1924.
  • Processor 1910 may perform any suitable actions and processes by loading program 1930 into RAM 1922.
  • Embodiments of the present disclosure may be implemented by means of program 1930 such that apparatus 1900 may perform any of the processes as discussed with reference to FIGS. 3-15 .
  • Embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
  • program 1930 may be tangibly embodied on a computer-readable medium, which may be included in apparatus 1900 (such as in memory 1920 ) or other storage device accessible by apparatus 1900 .
  • Program 1930 may be loaded into RAM 1922 from a computer-readable medium for execution.
  • Computer readable media may include any type of tangible non-volatile memory, such as ROM, EPROM, flash memory, hard disks, CDs, DVDs, and the like.
  • the communication module 1940 in the apparatus 1900 may be implemented as a transmitter and a receiver (or transceiver), which may be configured to transmit/receive system information, such as first system information, second system information, Third system information, etc.
  • the apparatus 1900 may further include one or more of a scheduler, a controller, and a radio frequency/antenna, which will not be described in detail in this disclosure.
  • the apparatus 1900 in FIG. 19 may be implemented as the terminal device 210 or the access network device 240 , or may be implemented as a chip or a chip system in the terminal device 210 , or may be implemented as the access network device 240 .
  • the chip or chip system is not limited in this embodiment of the present disclosure.
  • Embodiments of the present disclosure also provide a chip, which may include an input interface, an output interface, and a processing circuit.
  • the input interface and the output interface may complete the above-mentioned interaction of signaling or data
  • the processing circuit may complete the generation and processing of signaling or data information.
  • An embodiment of the present disclosure further provides a chip system, including a processor, for supporting the terminal device 210 or the access network device 240 to implement the functions involved in any of the foregoing embodiments.
  • the chip system may further include a memory for storing necessary program instructions and data.
  • the processor executes the program instructions, the device on which the chip system is installed can implement any of the above-mentioned embodiments.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • An embodiment of the present disclosure further provides a processor, which is coupled to a memory, and the memory stores instructions.
  • the processor executes the instructions, the processor causes the processor to execute the terminal device 210 or the access network involved in any of the foregoing embodiments. Methods and functions of device 240.
  • Embodiments of the present disclosure also provide a computer program product containing instructions, which, when running on a computer, enables the computer to execute the methods and functions involved in the terminal device 210 or the access network device 240 in any of the foregoing embodiments .
  • Embodiments of the present disclosure further provide a computer-readable storage medium, on which computer instructions are stored.
  • the processor executes the instructions, the processor causes the processor to execute the terminal device 210 or the access network device involved in any of the foregoing embodiments. 240 methods and functions.
  • An embodiment of the present disclosure further provides a wireless communication system, where the system includes a terminal device 210 or an access network device 240 .
  • the various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software, which may be executed by a controller, microprocessor or other computing device. Although various aspects of the embodiments of the present disclosure are shown and described as block diagrams, flowcharts, or using some other pictorial representation, it should be understood that the blocks, apparatuses, systems, techniques or methods described herein may be implemented, without limitation, as Illustrative examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controllers or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium.
  • the computer program product includes computer-executable instructions, eg, instructions included in program modules, which are executed in a device on a target's real or virtual processor to perform the processes/methods as described above with reference to FIGS. 3-15 .
  • program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or divided among the program modules as desired.
  • Machine-executable instructions for program modules may be executed within local or distributed devices. In a distributed facility, program modules may be located in both local and remote storage media.
  • Computer program code for implementing the methods of the present disclosure may be written in one or more programming languages. Such computer program code may be provided to a processor of a general purpose computer, special purpose computer or other programmable data processing apparatus such that the program code, when executed by the computer or other programmable data processing apparatus, causes the flowchart and/or block diagrams The functions/operations specified in are implemented.
  • the program code may execute entirely on the computer, partly on the computer, as a stand-alone software package, partly on the computer and partly on a remote computer or entirely on the remote computer or server.
  • computer program code or related data may be carried by any suitable carrier to enable a device, apparatus or processor to perform the various processes and operations described above.
  • carriers include signals, computer-readable media, and the like.
  • signals may include electrical, optical, radio, acoustic, or other forms of propagated signals, such as carrier waves, infrared signals, and the like.
  • a computer-readable medium may be any tangible medium that contains or stores a program for or in connection with an instruction execution system, apparatus, or device.
  • the computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium.
  • Computer-readable media may include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or devices, or any suitable combination thereof. More detailed examples of computer readable storage media include electrical connections with one or more wires, portable computer disks, hard disks, random memory access (RAM), read only memory (ROM), erasable programmable read only Memory (EPROM or flash memory), optical storage devices, magnetic storage devices, or any suitable combination thereof.

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Abstract

本公开提供了小区重选的方法、通信装置和计算机可读存储介质。在该方法中，终端设备确定目标网络切片；基于目标网络切片确定至少一个候选小区，该候选小区对应的频率支持目标网络切片；以及基于至少一个候选小区选择待驻留小区。方法还包括终端设备接收来自服务小区的接入网设备的系统信息。系统信息包括服务小区对应的频率支持的网络切片和/或服务小区对应的频率支持的网络切片的优先级，或者系统信息包括邻区对应的频率支持的网络切片和/或其优先级，和用于指示服务小区是否支持邻区对应的频率支持的网络切片的指示信息。终端设备通过优先级比较进行小区重选。本公开进行小区重选时，考虑切片因素，确保重选后的小区支持该目标网络切片。

Description

小区重选的方法、通信装置和计算机可读存储介质 技术领域
本公开涉及通信领域，并且更具体地，涉及小区重选的方法、通信装置和计算机可读存储介质。
背景技术
移动性管理是蜂窝移动通信系统中的一种机制，能够辅助通信系统实现负载均衡，提高用户体验以及系统整体性能，其中一类移动性管理是小区选择或小区重选，是由终端设备自己进行控制的。终端设备进行小区重选时，基于频率优先级来启动小区测量，进而根据小区信号质量完成小区重选的过程。
但是，目前的小区重选方案并不完善，不能适用网络切片场景。
发明内容
本公开的示例实施例提供了小区重选的方案，以期适用于网络切片场景。
第一方面，提供了一种小区重选方法。该方法包括：终端设备确定目标网络切片；所述终端设备基于所述目标网络切片确定至少一个候选小区，所述候选小区对应的频率支持所述目标网络切片；以及所述终端设备基于所述至少一个候选小区进行小区重选。
如此，终端设备在进行小区重选时，考虑网络切片的因素，具体地能够基于目标网络切片确定支持该目标网络切片的至少一个候选小区，从而确保小区重选后的小区支持该目标网络切片，适用于网络切片场景。该小区重选方案能够满足业务对切片的需求，更加完善。该方案提高了小区重选的效率，降低了时延，提升了终端设备的服务体验。
在第一方面的某些实施例中，还包括：所述终端设备接收来自所述终端设备所在的服务小区的接入网设备的第一系统信息，其中所述第一系统信息包括：所述服务小区对应的频率支持的网络切片和/或所述服务小区对应的频率支持的网络切片的第一优先级。
如此，终端设备能够通过第一系统信息获取服务小区对应的频率支持的切片信息，进而能够使得终端设备在进行小区重选考虑服务小区的切片因素，使小区重选的方案更完善。
在第一方面的某些实施例中，其中所述第一系统信息还包括邻区对应的频率支持的网络切片的第二优先级。可选地，第一系统信息可以包括SIB2。
如此，可以在第一系统信息中同时包括服务小区对应的频率支持的切片信息以及邻区对应的频率支持的网络切片的第二优先级，终端设备能够基于此确定服务小区和邻区对应的频率支持的网络切片，进而在进行小区重选时可以考虑服务小区和邻区的切片因素，使小区重选的方案更完善，避免了额外的信令开销。
在第一方面的某些实施例中，还包括：所述终端设备接收来自所述终端设备所在的服务小区的接入网设备的第二系统信息，其中所述第二系统信息包括邻区对应的频率支持的网络切片和/或所述邻区对应的频率支持的网络切片的第二优先级，所述第二系统信息还包括与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。如此，可以通过系统信息中与邻区对应的频率支持的网络切片对应的指示信息来指示服务小区是否支持网络切片，简化了指示方式， 对于信令交互的开销更小。
在第一方面的某些实施例中，其中所述第二系统信息还包括所述服务小区对应的频率支持的网络切片的第一优先级。可选地，第二系统信息可以包括SIB4和/或SIB5。
如此，可以第二系统信息中同时包括邻区对应的频率支持的网络切片的信息以及服务小区对应的频率支持的网络切片的信息，从而终端设备能够直接获取小区重选所需的优先级等参数，避免了额外的信令开销。
可选地，第一系统信息和/或第二系统信息可以为新定义的SIB。
通过新定义的SIB作为用于小区重选的系统信息，能够由终端设备更直接快速地解析小区重选所需的优先级等参数，进而能够缩短小区重选的整体时间，提升小区重选的效率。
在第一方面的某些实施例中，其中所述基于所述目标网络切片确定至少一个候选小区，包括：基于所述邻区对应的频率支持的网络切片和所述目标网络切片，从所述邻区中确定所述至少一个候选小区。
可选地，若邻区对应的频率支持的网络切片包括目标网络切片，则该邻区属于候选小区。
如此，终端设备能够基于邻区对应的频率支持的网络切片来确定候选小区，使得候选小区对应的频率都支持目标网络切片，这样能够确保重选的小区满足业务对切片的需求。
在第一方面的某些实施例中，其中所述终端设备基于所述至少一个候选小区进行小区重选，包括：所述终端设备基于所述至少一个候选小区选择待驻留小区；所述终端设备判断所述待驻留小区是否满足重选条件；以及在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在第一方面的某些实施例中，其中所述终端设备基于所述至少一个候选小区选择待驻留小区，包括：在所述服务小区支持所述目标网络切片的情况下，从所述服务小区和所述至少一个候选小区中选择所述待驻留小区。
如此，可以在服务小区支持目标网络切片时，从服务小区和候选小区中来选择用于小区重选的待驻留小区，确保了选择的范围有效，并且同时确保重选的小区对应的频率支持目标网络切片。
在第一方面的某些实施例中，其中所述终端设备基于所述至少一个候选小区选择待驻留小区，包括：在所述服务小区不支持所述目标网络切片的情况下，从所述至少一个候选小区中选择所述待驻留小区。
如此，可以在服务小区不支持目标网络切片时，仅从候选小区中选择用于小区重选的待驻留小区，而不考虑服务小区，避免重选后选择到服务小区不满足目标网络切片，导致不能业务的需求。
在第一方面的某些实施例中，其中所述终端设备基于所述至少一个候选小区选择待驻留小区，包括：从所述服务小区和邻区中选择所述待驻留小区，其中所述邻区包括所述至少一个候选小区。
在第一方面的某些实施例中，所述终端设备基于以下至少一项，从服务小区和邻区中选择所述待驻留小区：所述目标网络切片在所述服务小区对应的频率的第一优先级、所述候选小区对应的频率支持目标网络切片的第二优先级、或所述目标网络切片在所述邻区中除所述至少一个候选小区之外的非候选小区对应的频率的第二优先级。
在第一方面的某些实施例中，如果所述服务小区支持所述目标网络切片，那么所述目标 网络切片在所述服务小区对应的频率的第一优先级为所述小区对应的频率支持的目标网络切片的第一优先级。
在第一方面的某些实施例中，还包括：在所述服务小区不支持所述目标网络切片的情况下，将所述目标网络切片在所述服务小区对应的频率的第一优先级设定为第一预设值，其中所述第一预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
如此，即使在服务小区不支持目标网络切片的情况下，也可以通过设定第一预设值的方式来定义目标网络切片在服务小区对应的频率的第一优先级，进而在小区重选时将服务小区考虑在内。由于终端设备的物理位置处于服务小区之内，服务小区的信号质量一般高于邻区信号质量，因此将从服务小区和候选小区中选择待驻留小区，能够同时考虑信号质量和网络切片的因素，确保小区重选达到的效果更好。
在第一方面的某些实施例中，还包括：针对所述邻区中除去所述至少一个候选小区之外的非候选小区，将所述目标网络切片在所述非候选小区对应的频率的第二优先级设定为第二预设值，其中所述第二预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
如此，通过为不支持目标网络切片的非候选小区对应的频率设定优先级，可以从所有邻区中选择用于小区重选的待驻留小区，这样，能够更综合地考虑更全面的因素，使得重选的小区不仅满足切片的需求也能够满足其他的诸如信号质量等的需求。
在第一方面的某些实施例中，其中所述重选到所述待驻留小区包括：接收来自所述待驻留小区的接入网设备的第三系统信息，所述第三系统信息包括所述待驻留小区是否支持所述目标网络切片的指示信息；在所述第三系统信息指示所述待驻留小区支持所述目标网络切片的情况下，重选到所述待驻留小区。
如此，可以考虑区分小区的情形，即频率上部署的不同小区可能支持不同的网络切片，这样，能够基于来自待驻留小区的接入网设备的系统信息来获知该待驻留小区是否支持目标网络切片，防止驻留在不支持目标网络切片的小区上，影响业务的正常进行。
在第一方面的某些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
如此，可以通过各种不同的形式来标识网络切片，实现了标识的多样化。
第二方面，提供了一种小区重选的方法。该方法包括：终端设备获取邻区对应的频率支持的网络切片的优先级信息；所述终端设备基于所述邻区对应的频率支持的网络切片的优先级信息进行小区重选。
如此，终端设备在进行小区重选时，能够基于邻区对应的频率支持的网络切片的优先级信息来进行小区重选，充分地考虑不同网络切片的不同优先级，适用于网络切片场景，并能够确保重选后的小区满足终端设备处的业务需求，降低了访问时延，提高了服务体验。
在第二方面的某些实施例中，其中所述终端设备获取邻区对应的频率支持的网络切片的优先级信息，包括：所述终端设备接收来自所述终端设备所在的服务小区的接入网设备的系统信息，所述系统信息包括所述邻区对应的频率支持的网络切片的第二优先级。
在第二方面的某些实施例中，所述系统信息还包括与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
在第二方面的某些实施例中，所述系统信息还包括邻区对应的频率支持的网络切片。
在第二方面的某些实施例中，所述系统信息还包括所述服务小区对应的频率的第一优先级。可选地，在该实施例中，服务小区对应的频率支持的网络切片具有所述第一优先级。
在第二方面的某些实施例中，所述系统信息还包括所述服务小区对应的频率支持的网络切片和/或服务小区对应的频率支持的网络切片的第一优先级。
在第二方面的某些实施例中，其中所述终端设备有业务需要发起，所述业务对应于目标网络切片，则所述终端设备基于所述邻区对应的频率支持的网络切片的优先级信息进行小区重选包括：所述终端设备基于所述邻区中候选小区对应的频率支持的目标网络切片的第二优先级进行小区重选，其中所述候选小区对应的频率支持所述目标网络切片。
在第二方面的某些实施例中，在所述服务小区支持所述目标网络切片的情况下，所述终端设备基于所述邻区中候选小区对应的频率支持的目标网络切片的第二优先级进行小区重选，包括：所述终端设备基于所述服务小区对应的频率支持的目标网络切片的第一优先级以及所述候选小区对应的频率支持的目标网络切片的第二优先级，从所述服务小区和所述候选小区中选择待驻留小区；在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在第二方面的某些实施例中，在所述服务小区不支持所述目标网络切片的情况下，所述终端设备基于所述邻区中候选小区对应的频率支持的目标网络切片的第二优先级进行小区重选，包括：所述终端设备基于所述候选小区对应的频率支持的目标网络切片的第二优先级，从所述候选小区中选择待驻留小区；在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在第二方面的某些实施例中，所述终端设备基于所述邻区中候选小区对应的频率支持的目标网络切片的第二优先级进行小区重选，包括：所述终端设备基于以下至少一项，从服务小区和邻区中选择所述待驻留小区：所述目标网络切片在所述服务小区对应的频率的第一优先级，所述邻区中候选小区对应的频率支持的目标网络切片的第二优先级，或所述目标网络切片在所述邻区中除所述候选小区之外的非候选小区对应的频率支持的目标网络切片的第二优先级；在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在第二方面的某些实施例中，还包括：在所述服务小区不支持所述目标网络切片的情况下，将所述目标网络切片在所述服务小区对应的频率的第一优先级设定为第一预设值，其中所述第一预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在第二方面的某些实施例中，还包括：针对所述邻区中除去所述候选小区之外的非候选小区，将所述目标网络切片在所述非候选小区对应的频率的第二优先级设定为第二预设值，其中所述第二预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在第二方面的某些实施例中，其中所述重选到所述待驻留小区包括：接收来自所述待驻留小区的接入网设备的第三系统信息，所述第三系统信息包括所述待驻留小区是否支持所述目标网络切片的指示信息；在所述第三系统信息指示所述待驻留小区支持所述目标网络切片的情况下，重选到所述待驻留小区。
在第二方面的某些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
第三方面，提供一种信息传输方法。该方法包括：接入网设备确定系统信息；所述接入网设备发送系统信息，其中所述系统信息包括以下至少一项：服务小区对应的频率支持的网 络切片、服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片、或所述邻区对应的频率支持的网络切片的第二优先级。
可选地，系统信息可以包括第一系统信息和第二系统信息，其中所述第一系统信息包括服务小区对应的频率支持的网络切片和/或所述服务小区对应的频率的第一优先级，其中所述第二系统信息包括邻区对应的频率支持的网络切片和/或所述邻区对应的频率支持的网络切片的第二优先级。
在第三方面的某些实施例中，其中所述系统信息包括：服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片、以及所述邻区对应的频率支持的网络切片的第二优先级。
在第三方面的某些实施例中，其中所述系统信息包括：服务小区对应的频率的第一优先级、邻区对应的频率支持的网络切片、以及所述邻区对应的频率支持的网络切片的第二优先级。可选地所述系统信息还包括：与所述邻区对应的频率支持的网络切片对应的指示信息，所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
在第三方面的某些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
第四方面，提供了一种通信装置。该装置包括：第一确定单元，被配置为确定目标网络切片；第二确定单元，被配置为基于所述目标网络切片确定至少一个候选小区，所述候选小区对应的频率支持所述目标网络切片；以及小区重选单元，被配置为基于所述至少一个候选小区进行小区重选。
在第四方面的某些实施例中，还包括接收单元，被配置为：接收来自所述通信装置所在的服务小区的接入网设备的第一系统信息，其中所述第一系统信息包括：所述服务小区对应的频率支持的网络切片和/或所述服务小区对应的频率支持的网络切片的第一优先级。
在第四方面的某些实施例中，其中所述第一系统信息还包括：邻区对应的频率支持的网络切片的第二优先级。
在第四方面的某些实施例中，还包括接收单元，被配置为：接收来自所述通信装置所在的服务小区的接入网设备的第二系统信息，其中所述第二系统信息包括邻区对应的频率支持的网络切片和/或所述邻区对应的频率支持的网络切片的第二优先级，所述第二系统信息还包括与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
在第四方面的某些实施例中，其中所述第二系统信息还包括：所述服务小区对应的频率支持的网络切片的第一优先级。
在第四方面的某些实施例中，其中所述第二确定单元被配置为：基于所述邻区对应的频率支持的网络切片和所述目标网络切片，从所述邻区中确定所述至少一个候选小区。
在第四方面的某些实施例中，其中所述小区重选单元包括：选择子单元，被配置为基于所述至少一个候选小区选择待驻留小区；判断子单元，被配置为判断所述待驻留小区是否满足重选条件；重选子单元，被配置为在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在第四方面的某些实施例中，其中所述选择子单元被配置为：在所述服务小区支持所述目标网络切片的情况下，从所述服务小区和所述至少一个候选小区中选择所述待驻留小区。
在第四方面的某些实施例中，其中所述选择子单元被配置为：在所述服务小区不支持所述目标网络切片的情况下，从所述至少一个候选小区中选择所述待驻留小区。
在第四方面的某些实施例中，其中所述选择子单元被配置为：基于以下至少一项，从所述服务小区和邻区中选择所述待驻留小区：所述目标网络切片在所述服务小区对应的频率的第一优先级、所述候选小区对应的频率支持的目标网络切片的第二优先级、或所述目标网络切片在所述邻区中除所述至少一个候选小区之外的非候选小区对应的频率支持的目标网络切片的第二优先级。
在第四方面的某些实施例中，还包括设定单元，被配置为：在所述服务小区不支持所述目标网络切片的情况下，将所述目标网络切片在所述服务小区对应的频率的第一优先级设定为第一预设值，其中所述第一预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在第四方面的某些实施例中，还包括设定单元，被配置为：针对所述邻区中除去所述至少一个候选小区之外的非候选小区，将所述目标网络切片在所述非候选小区对应的频率的第二优先级设定为第二预设值，其中所述第二预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在第四方面的某些实施例中，其中所述重选子单元被配置为：接收来自所述待驻留小区的接入网设备的第三系统信息，所述第三系统信息包括所述待驻留小区是否支持所述目标网络切片的指示信息；在所述第三系统信息指示所述待驻留小区支持所述目标网络切片的情况下，重选到所述待驻留小区。
在第四方面的某些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
第五方面，提供了一种通信装置。该装置包括：获取单元，被配置为获取邻区对应的频率支持的网络切片的优先级信息；以及小区重选单元，被配置为基于所述邻区对应的频率支持的网络切片的优先级信息进行小区重选。
在第五方面的某些实施例中，其中所述获取单元被配置为：接收来自所述通信装置所在的服务小区的接入网设备的系统信息，所述系统信息包括邻区对应的频率支持的网络切片的第二优先级。
在第五方面的某些实施例中，所述系统信息包括邻区对应的频率支持的网络切片的第二优先级，以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
在第五方面的某些实施例中，所述系统信息包括邻区对应的频率支持的网络切片、所述邻区对应的频率支持的网络切片的第二优先级、以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。所述系统信息还包括所述服务小区对应的频率的第一优先级。可选地，在该实施例中，服务小区对应的频率支持的网络切片具有所述第一优先级。
在第五方面的某些实施例中，所述系统信息还包括所述服务小区对应的频率支持的网络切片和/或服务小区对应的频率支持的网络切片的第一优先级。
在第五方面的某些实施例中，其中所述通信装置有业务需要发起，所述业务对应于目标网络切片，则所述小区重选单元被配置为：基于所述邻区中候选小区对应的频率支持的目标 网络切片的第二优先级进行小区重选，其中所述候选小区对应的频率支持所述目标网络切片。
在第五方面的某些实施例中，在所述服务小区支持所述目标网络切片的情况下，所述小区重选单元被配置为：基于所述服务小区对应的频率支持的目标网络切片的第一优先级以及所述候选小区对应的频率支持的目标网络切片的第二优先级，从所述服务小区和所述候选小区中选择待驻留小区；在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在第五方面的某些实施例中，在所述服务小区不支持所述目标网络切片的情况下，所述小区重选单元被配置为：基于所述候选小区对应的频率支持的目标网络切片的第二优先级，从所述候选小区中选择待驻留小区；在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在第五方面的某些实施例中，所述小区重选单元被配置为：基于以下至少一项，从服务小区和邻区中选择所述待驻留小区：所述目标网络切片在所述服务小区对应的频率的第一优先级、所述邻区中候选小区对应的频率支持的目标网络切片的第二优先级，或所述目标网络切片在所述邻区中除所述候选小区之外的非候选小区对应的频率的第二优先级；在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在第五方面的某些实施例中，还包括设定单元，被配置为：在所述服务小区不支持所述目标网络切片的情况下，将所述目标网络切片在所述服务小区对应的频率的第一优先级设定为第一预设值，其中所述第一预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在第五方面的某些实施例中，还包括设定单元，被配置为：针对所述邻区中除去所述候选小区之外的非候选小区，将所述目标网络切片在所述非候选小区对应的频率的第二优先级设定为第二预设值，其中所述第二预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在第五方面的某些实施例中，其中所述小区重选单元被配置为：接收来自所述待驻留小区的接入网设备的第三系统信息，所述第三系统信息包括所述待驻留小区是否支持所述目标网络切片的指示信息；在所述第三系统信息指示所述待驻留小区支持所述目标网络切片的情况下，重选到所述待驻留小区。
在第五方面的某些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
第六方面，提供了一种通信装置。该装置包括：确定单元，被配置为确定系统信息；发送单元，被配置为发送所述系统信息，其中所述系统信息包括以下至少一项：服务小区对应的频率支持的网络切片、服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片、或所述邻区对应的频率支持的网络切片的第二优先级。
可选地，系统信息可以包括第一系统信息和第二系统信息，其中所述第一系统信息包括服务小区对应的频率支持的网络切片和/或所述服务小区对应的频率的第一优先级，其中所述第二系统信息包括邻区对应的频率支持的网络切片和/或所述邻区对应的频率支持的网络切片的第二优先级。
在第六方面的某些实施例中，其中所述系统信息包括：服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片、以及所述邻区对应的频率支持的网络切片的第二优先级。
在第六方面的某些实施例中，其中所述系统信息包括：服务小区对应的频率的第一优先级、邻区对应的频率支持的网络切片、以及所述邻区对应的频率支持的网络切片的第二优先级。可选地所述系统信息还包括：与所述邻区对应的频率支持的网络切片对应的指示信息，所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
在第六方面的某些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
第七方面，提供了一种通信装置。该装置包括处理器以及存储器，所述存储器上存储有由所述处理器执行的指令，当所述指令被所述处理器执行时使得所述装置实现：确定目标网络切片；基于所述目标网络切片确定至少一个候选小区，所述候选小区对应的频率支持所述目标网络切片；以及基于所述至少一个候选小区进行小区重选。
在第七方面的某些实施例中，还包括收发器，被配置为：接收来自所述通信装置所在的服务小区的接入网设备的第一系统信息，其中所述系统信息包括：所述服务小区对应的频率支持的网络切片和/或所述服务小区对应的频率支持的网络切片的第一优先级。
在第七方面的某些实施例中，其中所述第一系统信息还包括：邻区对应的频率支持的网络切片的第二优先级。
在第七方面的某些实施例中，还包括收发器，被配置为：接收来自所述通信装置所在的服务小区的接入网设备的第二系统信息，其中所述系统信息包括邻区对应的频率支持的网络切片和/或所述邻区对应的频率支持的网络切片的第二优先级，所述第二系统信息还包括与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
在第七方面的某些实施例中，其中所述第二系统信息还包括：所述服务小区对应的频率支持的网络切片的第一优先级。
在第七方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：基于所述邻区对应的频率支持的网络切片和所述目标网络切片，从所述邻区中确定所述至少一个候选小区。
在第七方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：基于所述至少一个候选小区选择待驻留小区；判断所述待驻留小区是否满足重选条件；在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在第七方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：在所述服务小区支持所述目标网络切片的情况下，从所述服务小区和所述至少一个候选小区中选择所述待驻留小区。
在第七方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：在所述服务小区不支持所述目标网络切片的情况下，从所述至少一个候选小区中选择所述待驻留小区。
在第七方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：基于以下至少一项，从所述服务小区和邻区中选择所述待驻留小区：所述目标网络切片在所述服务小区对应的频率的第一优先级、所述候选小区对应的频率支持的目标网络切片的第二优先级、或所述目标网络切片在所述邻区中除所述至少一个候选小区之外的非候选小区对应的频率支持的目标网络切片的第二优先级。
在第七方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：在所述服务小区不支持所述目标网络切片的情况下，将所述目标网络切片在所述服务小区对应的频率的第一优先级设定为第一预设值，其中所述第一预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在第七方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：针对所述邻区中除去所述至少一个候选小区之外的非候选小区，将所述目标网络切片在所述非候选小区对应的频率的第二优先级设定为第二预设值，其中所述第二预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在第七方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：接收来自所述待驻留小区的接入网设备的第三系统信息，所述第三系统信息包括所述待驻留小区是否支持所述目标网络切片的指示信息；在所述第三系统信息指示所述待驻留小区支持所述目标网络切片的情况下，重选到所述待驻留小区。
在第七方面的某些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
第八方面，提供了一种通信装置，包括处理器以及存储器，所述存储器上存储有由所述处理器执行的指令，当所述指令被所述处理器执行时使得所述装置实现：获取邻区对应的频率支持的网络切片的优先级信息；以及基于所述邻区对应的频率支持的网络切片的优先级信息进行小区重选。
在第八方面的某些实施例中，还包括收发器，被配置为：接收来自所述通信装置所在的服务小区的接入网设备的系统信息，所述系统信息包括邻区对应的频率支持的网络切片的第二优先级。
在第八方面的某些实施例中，所述系统信息包括邻区对应的频率支持的网络切片的第二优先级，以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
在第八方面的某些实施例中，所述系统信息包括邻区对应的频率支持的网络切片、所述邻区对应的频率支持的网络切片的第二优先级、以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。所述系统信息还包括所述服务小区对应的频率的第一优先级。可选地，在该实施例中，服务小区对应的频率支持的网络切片具有所述第一优先级。
在第八方面的某些实施例中，所述系统信息还包括所述服务小区对应的频率支持的网络切片和/或服务小区对应的频率支持的网络切片的第一优先级。
在第八方面的某些实施例中，其中所述通信装置有业务需要发起，所述业务对应于目标网络切片，其中所述处理器执行所述指令，使得所述装置实现：基于所述邻区中候选小区对应的频率支持的目标网络切片的第二优先级进行小区重选，其中所述候选小区对应的频率支持所述目标网络切片。
在第八方面的某些实施例中，在所述服务小区支持所述目标网络切片的情况下，其中所述处理器执行所述指令，使得所述装置实现：基于所述服务小区对应的频率支持的目标网络切片的第一优先级以及所述候选小区对应的频率支持的目标网络切片的第二优先级，从所述服务小区和所述候选小区中选择待驻留小区；在所述待驻留小区满足重选条件的情况下，重 选到所述待驻留小区。
在第八方面的某些实施例中，在所述服务小区不支持所述目标网络切片的情况下，其中所述处理器执行所述指令，使得所述装置实现：基于所述候选小区对应的频率支持的目标网络切片的第二优先级，从所述候选小区中选择待驻留小区；在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在第八方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：基于以下至少一项，从服务小区和邻区中选择所述待驻留小区：所述目标网络切片在所述服务小区对应的频率的第一优先级、所述邻区中候选小区对应的频率支持的目标网络切片的第二优先级、或所述目标网络切片在所述邻区中除所述候选小区之外的非候选小区对应的频率的第二优先级进行小区重选。
在第八方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：在所述服务小区不支持所述目标网络切片的情况下，将所述目标网络切片在所述服务小区对应的频率的第一优先级设定为第一预设值，其中所述第一预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在第八方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：针对所述邻区中除去所述候选小区之外的非候选小区，将所述目标网络切片在所述非候选小区对应的频率的第二优先级设定为第二预设值，其中所述第二预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在第八方面的某些实施例中，其中所述处理器执行所述指令，使得所述装置实现：接收来自所述待驻留小区的接入网设备的第三系统信息，所述第三系统信息包括所述待驻留小区是否支持所述目标网络切片的指示信息；在所述第三系统信息指示所述待驻留小区支持所述目标网络切片的情况下，重选到所述待驻留小区。
在第八方面的某些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
第九方面，提供了一种通信装置，包括收发器、处理器以及存储器，所述存储器上存储有由所述处理器执行的指令，当所述指令被所述处理器执行时使得所述装置实现：确定系统信息；经由所述收发器发送所述系统信息，其中所述系统信息包括以下至少一项：服务小区对应的频率支持的网络切片、服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片、或所述邻区对应的频率支持的网络切片的第二优先级。
可选地，系统信息可以包括第一系统信息和第二系统信息，其中所述第一系统信息包括服务小区对应的频率支持的网络切片和/或所述服务小区对应的频率的第一优先级，其中所述第二系统信息包括邻区对应的频率支持的网络切片和/或所述邻区对应的频率支持的网络切片的第二优先级。
在第九方面的某些实施例中，其中所述系统信息包括：服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片、以及所述邻区对应的频率支持的网络切片的第二优先级。
在第九方面的某些实施例中，其中所述系统信息包括：服务小区对应的频率的第一优先级、邻区对应的频率支持的网络切片、以及所述邻区对应的频率支持的网络切片的第二优先级。可选地所述系统信息还包括：与所述邻区对应的频率支持的网络切片对应的指示信息， 所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
在第九方面的某些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
第十方面，提供了一种终端设备。该终端设备能够实现上述第一方面或第二方面任一方面或其任一实现方式所述的方法。
终端设备可以包括如上第四方面、第五方面、第七方面或第八方面任一方面或其任一实现方式所述的通信装置。
第十一方面，提供了一种接入网设备。该接入网设备能够实现上述第三方面或其任一实现方式所述的方法。
接入网设备可以包括如上第六方面或第九方面任一方面或其任一实现方式所述的装置。
第十二方面，提供了计算机可读存储介质，该计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现根据上述第一方面或第二方面或第三方面任一方面或其任一实施例中的方法的操作。
第十三方面，提供了一种芯片或芯片系统。该芯片或芯片系统包括处理电路，被配置为执行根据上述第一方面或第二方面或第三方面任一方面或其任一实施例中的方法的操作。
第十四方面，提供了一种计算机程序或计算机程序产品。该计算机程序或计算机程序产品被有形地存储在计算机可读介质上并且包括计算机可执行指令，计算机可执行指令在被执行时使设备实现根据上述第一方面或第二方面或第三方面任一方面或其任一实施例中的方法的操作。
应理解的是，在不相互矛盾的前提下，在上面描述的各个方面和/或各个方面的一些实施例可以相互组合，或者可以全部或部分地替换。例如某个方面的一些实施例可以与某个方面的另一些实施例组合作为某个方面的新的一些实施例。例如某个方面的一些实施例可以与另一方面的一些实施例组合作为某个方面的新的一些实施例。例如某个方面的一些实施例可以作为另一方面的一些实施例。
附图说明
结合附图并参考以下详细说明，本公开各实现方式的特征、优点及其他方面将变得更加明显。在此以示例性而非限制性的方式示出了本公开的若干实现方式，在附图中：
图1示出了包括网络切片的通信系统100的示意图；
图2示出了本公开实施例的一种通信系统200的示意图；
图3示出了根据本公开实施例的小区重选的方法300的一个示意流程图；
图4示出了根据本公开实施例的小区重选的方法400的另一个示意流程图；
图5示出了根据本公开实施例的另一种通信系统500的示意图；
图6示出了根据本公开实施例的另一种通信系统600的示意图；
图7示出了根据本公开实施例的选择待驻留小区的过程700的一个示意流程图；
图8示出了根据本公开实施例的另一种通信系统800的示意图；
图9示出了根据本公开实施例的选择待驻留小区的过程900的另一个示意流程图；
图10示出了根据本公开实施例的小区重选的方法1000的一个示意流程图；
图11示出了根据本公开实施例的小区重选的方法1100的一个示意交互图；
图12示出了根据本公开实施例的切片部署情形1200的一个示意图；
图13示出了根据本公开实施例的小区重选的方法1300的另一个示意流程图；
图14示出了根据本公开实施例的小区重选的方法1400的另一个示意交互图；
图15示出了根据本公开实施例的信息传输方法1500的一个示意流程图；
图16示出了根据本公开实施例的通信装置1600的一个示意框图；
图17示出了根据本公开实施例的通信装置1700的一个示意框图；
图18示出了根据本公开实施例的通信装置1800的一个示意框图；
图19示出了根据本公开实施例的示例装置1900的简化框图。
具体实施方式
下面将参照附图更详细地描述本公开的实施例。虽然附图中显示了本公开的某些实施例，然而应当理解的是，本公开可以通过各种形式来实现，而且不应该被解释为限于这里阐述的实施例，相反提供这些实施例是为了更加透彻和完整地理解本公开。应当理解的是，本公开的附图及实施例仅用于示例性作用，并非用于限制本公开的保护范围。
在本公开的实施例的描述中，术语“包括”及其类似用语应当理解为开放性包含，即“包括但不限于”。术语“基于”应当理解为“至少部分地基于”。术语“一个实施例”或“该实施例”应当理解为“至少一个实施例”。术语“第一”、“第二”等等可以指代不同的或相同的对象。
本公开的实施例可以根据任何适当的通信协议来实施，包括但不限于，第三代(3rd Generation，3G)，第四代(4G)和第五代(5G)等蜂窝通信协议、诸如电气与电子工程师协会(Institute of Electrical and Electronics Engineers，IEEE)802.11等的无线局域网通信协议、和/或目前已知或者将来开发的任何其他协议。
本公开实施例的技术方案应用于遵循任何适当的通信系统，例如：通用分组无线业务(General Packet Radio Service，GPRS)、全球移动通信系统(Global System for Mobile Communications，GSM)、增强型数据速率GSM演进系统(Enhanced Data rate for GSM Evolution，EDGE)、通用移动通信系统(Universal Mobile Telecommunications Service，UMTS)、长期演进(Long Term Evolution，LTE)系统、宽带码分多址系统(Wideband Code Division Multiple Access，WCDMA)、码分多址2000系统(Code Division Multiple Access，CDMA2000)、时分同步码分多址系统(Time Division-Synchronization Code Division Multiple Access，TD-SCDMA)、频分双工(Frequency Division Duplex，FDD)系统、时分双工(Time Division Duplex，TDD)、第五代(5G)系统或新无线(New Radio，NR)，等等。
出于说明的目的，下文中以5G的第三代合作伙伴计划(3GPP)通信系统为背景来描述本公开的实施例。然而，应当理解，本公开的实施例不限于被应用到5G的3GPP通信系统，而是可以被应用到任何存在类似问题的通信系统中，例如无线局域网(WLAN)、有线通信系统、或者将来开发的其他通信系统等。
在本公开中使用的术语“终端设备”指能够与网络设备之间或者彼此之间进行有线或无线通信的任何终端设备。终端设备有时可以称为用户设备(User Equipment，UE)。终端设备可以是任意类型的移动终端、固定终端或便携式终端。作为示例，终端设备可以包括移动手机、站点、单元、设备、移动终端(Mobile Terminal，MT)、订阅台、便携式订阅台、互联 网节点、通信器、台式计算机、膝上型计算机、笔记本计算机、平板计算机、个人通信系统设备、个人导航设备、个人数字助理(Personal Digital Assistant，PDA)、定位设备、无线电广播接收器、电子书设备、游戏设备、物联网(Internet of Things，IoT)设备、车载设备、飞行器、虚拟现实(Virtual Reality，VR)设备、增强现实(Augmented Reality，AR)设备、可穿戴设备、5G网络中的终端设备或者演进的公用陆地移动网络(Public Land Mobile Network，PLMN)中的任何终端设备、可用于通信的其他设备、或者上述的任意组合。本公开的实施例对此并不做限定。
在本公开中使用的术语“接入网设备”是可以用于与终端设备通信的实体或节点。接入网设备可以是部署在无线接入网中为移动终端提供无线通信功能的装置，例如可以是无线接入网(Radio Access Network，RAN)网络设备。接入网设备可以包括各种类型的基站。作为示例，接入网设备可以包括各种形式的宏基站、微基站、微微基站、毫微微基站、中继站、接入点、远程无线电单元(Remote Radio Unit，RRU)、射频头(Radio Head，RH)、远程无线电头端(Remote Radio Head，RRH)等等。在采用不同的无线接入技术的系统中，接入网设备的名称可能会有所不同，例如在长期演进系统(Long Term Evolution，LTE)网络中称为演进的节点B(evolved NodeB，eNB或eNodeB)，在3G网络中称为节点B(NodeB，NB)，在5G网络中可以称为g节点B(gNB)或NR节点B(NR NB)，等等。在某些场景下，接入网设备可以包含集中单元(Central Unit，CU)和/或分布单元(Distributed Unit，DU)。CU和DU可以放置在不同的地方，例如：DU拉远，放置于高话务量的区域，CU放置于中心机房。或者，CU和DU也可以放置在同一机房。CU和DU也可以为一个机架下的不同部件。为方便描述，本公开后续的实施例中，上述为移动终端提供无线通信功能的装置统称为接入网设备，本公开的实施例不再具体限定。
本公开中使用的术语“网络切片(Network Slice)”是虚拟的逻辑网络，其可以提供特定的网络性能。关于网络切片的进一步理解可以参照图1。
图1示出了包括网络切片的通信系统100的示意图。如图所示，在基础设施池110上，可以虚拟出多个网络切片120-1、120-2、……、120-N(为讨论方便，在本文中统称为或分别称为网络切片120)，其中N是大于1的整数。应当理解，图1中所示出的网络切片数目和基础设施仅是示例，网络切片也可简称为“切片”。
基础设施池110可以包括用于支持网络服务所需要的各种物理或虚拟网络设备，诸如以下至少一种：接入网设备、服务器、交换机或核心网设备等。如图1中所示，无线电接入网(Radio Access Network，RAN)130-1可以提供RAN资源，核心网(Core Network，CN)130-2可以提供一种或多种CN功能。移动网络运营商(Mobile Network Operator，MNO)可以将客户视为属于不同的租户类型。不同的租户类型可以具有不同的服务需求，这样的服务需求是基于服务水平协议(Service Level Agreement，SLA)和订阅等来确定的。RAN资源等能够根据不同的服务需求或者租户需求而分配到不同的网络切片120。从而，不同的网络切片120能够提供不同的网络能力和网络特性，从而能够满足设备140的不同的服务需求。
网络切片120的类型通常与所要支持的业务类型相关，例如可以包括增强移动宽带(Enhanced Mobile Broadband，eMBB)、超可靠低时延通信(Ultra-Reliable Low Latency Communication，URLLC)、海量物联网(massive Internet of Things，mIoT)、车联万物(Vehicle-to-Everything，V2X)等类型。
eMBB可以提供更大的数据带宽，例如可以在5G(NR)和4G(LTE)上均进行湿度的延迟改进。URLLC可以满足更多带宽和超可靠低时延的要求，可以减少端到端的延迟，尤其是一些既对延迟敏感又需要广泛覆盖范围的应用。mIOT能够满足低功耗广域范围内的大量设备之间的通信。V2X使得车辆与车辆、车辆与接入网设备、车辆与其他终端设备等之间进行通信，例如可以用于未来智能交通运输系统。
以图1中所示为例，网络切片120-1可以为eMMB切片，网络切片120-2可以为mIoT切片，网络切片120-N可以为V2X切片。
不同的网络切片120可以是具有不同的特点且相互隔离的逻辑网络，从而针对性地为用户提供服务。以5G网络切片为例，5G网络切片是能够在同一物理网络基础结构上多路复用虚拟化和独立的逻辑网络的网络架构。每个网络切片可以是隔离的端到端(end-to-end)网络，旨在满足特定应用程序所请求的各种要求。
不同的网络切片可以由单网络切片选择辅助信息(Single Network Slice Selection Assistance Information，S-NSSAI)来标识和区分。S-NSSAI可以包括切片/服务类型(Slice/Service Type，SST)，用于指示网络切片的特征和所服务的业务类型。作为SST的补充，S-NSSAI还可以包括切片区分信息(Slice Differentiator，SD)，以用于进一步区分满足相同SST的多个网络切片实例。SD是可选的。
传统上，终端设备在进行小区重选时，可以基于服务小区与邻区的频率的优先级来决定如何启动测量。然而，这种方案不够完善，无法适应具有网络切片的通信系统的需求。
本公开实施例提供了一种小区重选的方案。下面将结合附图较为详细地描述本公开的实施例。
图2示出了本公开实施例的一种通信系统200的示意图。图2的系统200包括终端设备210和接入网设备240。
如图2所示，终端设备210位于服务小区220中。服务小区220具有邻区230-1和邻区230-2。接入网设备240可以是服务小区220的接入网设备。例如，接入网设备240可以为公用移动通信基站(如gNB)等。
为讨论方便，下文中可以将邻区230-1和邻区230-2统称为邻区230。应当理解，图2中所示出的邻区230的数目仅是示例。
不同的小区可以工作在相同或不同的频率上。图2的示例中，假设服务小区220的频率(即服务频率)为f1，邻区230-1的频率为f2，邻区230-2的频率为f3。应当理解，本公开实施例中的频率也可以称为频点或载频(Carrier Frequency)等，本公开对此不限定。为了描述方便，下文中以频率为例进行阐述。应理解的是，本公开实施例中的频率可以是对应频率范围内的值，例如中心值。为了简化描述，下文中以频率为例进行阐述，但是可理解，本公开实施例中的频率也可以被替换为对应频率范围。
可理解的是，小区工作在相应的频率上，例如，服务小区220的频率为f1，即服务小区220在频率f1上工作。可理解的是，某个频率可以部署有多个不同的小区，例如，频率f2可以等于频率f3，即频率f2同时部署有邻区230-1和邻区230-2。另外还应理解，服务小区和邻区是相对概念，随着终端设备210的移动等可能会发生变化，本公开中对此不限定。
应当理解，图2所示的设备的数目及其连接是为了说明的目的而给出的，无意进行任何限制。系统200可以包括适合于实现本公开实施例的任何合适数目的其他的设备。
另外，应注意的是，图2仅是示意，其中示出的3个小区不限于上述场景，例如邻区230可以是服务小区220的以下任一种：同系统同频小区、同系统异频小区、异系统同频小区、异系统异频小区等。本公开对此不限定。
本公开实施例中，涉及术语“小区”，“频率”，“网络切片”，其中，小区具有对应的频率，或简称为小区的频率。反过来，频率上可以部署一个或多个小区。频率可以支持一个或多个网络切片，小区可以支持一个或多个网络切片。
本公开实施例中，涉及术语“优先级”，也可以称为“重选优先级(Reselection Priority)”或“小区重选优先级(cell Reselection Priority)”，为了简洁，本公开实施例中简称为优先级。在一些示例中，优先级可以通过系统信息、无线资源控制释放(Radio Resource Control Release，RRC Release)消息由接入网设备发送。在另一些示例中，例如对于异频和异系统的优先级，可以在异系统重选时从异系统那继承过来。可选地，优先级的取值范围可以为0至7，值越大表示优先级越高。示例性地也可以通过其他方式来表示优先级的高低，本公开对此不限定。可选地，还可以进一步包括子优先级，也称为小区重选子优先级(Cell Reselection Sub Priority)，作为一例，子优先级的取值范围可以为0.2，0.4，0.6，0.8等。应注意的是，本公开实施例针对优先级进行阐述，关于子优先级的实施例可以类似地得到，本公开中不再阐述。
图3示出了根据本公开实施例的小区重选的方法300的一个示意流程图。方法300可以由终端设备210执行。图3所示的方法300可以包括步骤310至330。
310，终端设备确定目标网络切片。
在本公开的实施例中，目标网络切片可以是终端设备期望的网络切片，或简称为期望的切片(Intended Slice)。
在一些实施例中，处于空闲态(idle)或非激活态(inactive)的终端设备在移动过程中需要进行小区重选，此时终端设备可以确定目标网络切片。
在一种实现方式中，如果终端设备存在移动发起(Mobile Original，MO)业务，也就是说，如果终端设备有业务需要发起，那么终端设备310可以将与该业务对应的切片确定为目标网络切片。在该实现方式中，终端设备将要发起的业务所对应的切片即期望的切片，示例性地，也可以将该业务称为切片通信。
举例来讲，结合图1的通信系统100，假设终端设备要发起的业务是直播业务，那么可以确定对应的目标网络切片为eMBB切片。假设终端设备要发起的业务是自动驾驶业务，那么可以确定对应的目标网络切片是URLLC切片。假设终端设备要发起的业务是智能家居控制业务，那么可以确定对应的目标网络切片为mIOT切片。假设终端设备要发起的业务是自动驾驶业务，那么可以确定对应的目标网络切片为V2X切片。可理解，这些仅仅是示例，这些示例中业务与切片的对应关系不构成限定，并且还可以包括其他的切片等。
在另一种实现方式中，如果终端设备没有要发起的业务，此时终端设备可以将允许的(allowed)网络切片中的至少一个确定为目标网络切片。
示例性地，可以通过终端设备的非接入层(Non-Access Stratum，NAS)向接入层(Access Stratum，AS)发送目标网络切片的标识，来确定目标网络切片。
不同的网络切片可以具有不同的标识。网络切片的标识可以是以下至少一项：(1)S-NSSAI，(2)切片标识(Slice ID)，(3)切片组标识(Slice group ID)，(4)访问类别(Access Category，AC)，或(5)访问身份(Access Identity，AI)。
为了下文描述的方便，本公开实施例中假设目标网络切片表示为S2。
320，终端设备基于目标网络切片确定至少一个候选小区，其中候选小区对应的频率支持该目标网络切片。
示例性地，频率支持该目标网络切片，可以包括频率可以被用于访问该目标网络切片，即可以使用该频率访问目标网络切片。在一些示例中，终端设备可以确定可以访问该目标网络切片的频率，进一步可以将该频率上部署的小区作为至少一个候选小区。
终端设备可以基于邻区对应的频率支持的网络切片和310所确定的目标网络切片，来确定至少一个候选小区。
在本公开的一些实施例中，终端设备可以获取邻区对应的频率所支持的网络切片，将支持目标网络切片的频率作为候选频率，进一步可以将候选频率上所部署的小区确定为至少一个候选小区。
邻区可以是同系统异频小区，或者也可以是异系统小区。相应地，邻区对应的频率可以是同系统的不同频率或者可以为异系统的频率。举例来说，假设终端设备所处的系统为NR系统，那么邻区对应的频率可以是NR系统的不同频率或者无线电接入技术(Radio Access Technology，RAT)间(inter-RAT)频率。
可选地，在320之前，还可以包括步骤312：终端设备接收来自接入网设备的系统信息。
在一例中，该系统信息可以包括邻区对应的频率所支持的网络切片。也就是说，可以通过系统信息将邻区对应的频率所支持的网络切片提供给终端设备，从而终端设备能够直接地获取邻区对应的频率所支持的网络切片。在另一例中，该系统信息可以包括邻区对应的频率所支持的网络切片的第二优先级。在该例中，系统信息可以隐式的形式指示邻区对应的频率所支持的网络切片，从而终端设备能够间接地获取邻区对应的频率所支持的网络切片。
示例性地，在320中，终端设备可以基于该系统信息确定至少一个候选小区。
可理解的是，尽管在图3中示出312是在320之前执行的，但是本公开实施例中，312可以与310同时或不同时地执行，例如可以在310之前执行，本公开对此不限定。
接入网设备发送的系统信息可以包括主信息块(Master Information Block，MIB)和系统信息消息(System Information Message)，其中系统信息消息中还可以包括多种类型的系统信息块(System Information Block，SIB)，如SIB1，SIB2，SIB3，SIB4，或SIB5等。可理解，系统信息也可以为以后定义的其他类型的SIB，本公开对此不限定。
可选地，在320中，终端设备可以基于系统信息确定至少一个候选小区。
举例来讲，假设邻区对应的频率为f2，该频率f2支持的网络切片包括第一网络切片S1和第二网络切片S2。那么在该实施例中，系统信息可以通过“f2:{S1，S2}”表示频率f2支持的网络切片为S1和S2。
可理解，邻区的数量可以为一个或多个。示例性地，系统信息可以包括一个或多个邻区对应的频率支持的网络切片。以图2为例，终端设备可以获取邻区230-1对应的频率支持的网络切片以及邻区232-2对应的频率支持的网络切片。假设通过“f2:{S1，S2}”表示邻区230-1对应的频率f2支持的网络切片为S1和S2，通过“f3:{S1，S2，S3}”表示邻区230-2对应的频率f3支持的网络切片为S1，S2和S3。应注意，这仅是示意性的举例，为了对方案更方便地理解，不应解释为对本公开实施例的限定。
示例性地，若系统信息指示某频率支持目标网络切片，则可以将该频率上部署的所有邻 区都作为候选小区，即该频率上部署的所有邻区都属于候选小区。举例来说，若第一频率支持目标网络切片，则第一频率上部署的所有小区都属于候选小区。若第二频率不支持目标网络切片，则第二频率上部署的所有小区都不属于候选小区。
在目标网络切片为S2的情况下，以图2为例，邻区230-1对应的频率f2支持的网络切片包括S2，邻区230-2对应的频率f3支持的网络切片也包括S2，那么频率f2和频率f3属于候选频率，相应地可以将邻区230-1和邻区230-2确定为候选小区。
本公开实施例中，可以将支持目标网络切片的频率确定为候选频率，也可以将不支持目标网络切片的频率确定为非候选频率。相应地，非候选频率上部署的所有小区都是非候选小区。
330，终端设备基于至少一个候选小区进行小区重选。
具体地，终端设备可以基于至少一个候选小区选择待驻留小区，再基于待驻留小区进行小区重选。
示例性地，终端设备可以基于至少一个候选小区选择待驻留小区，判断该待驻留小区是否满足重选条件，并在该待驻留小区满足重选条件的情况下，重选到该待驻留小区。
在一种实现方式中，终端设备基于至少一个候选小区选择待驻留小区包括：终端设备从服务小区和至少一个候选小区中选择待驻留小区。
在另一种实现方式中，终端设备基于至少一个候选小区选择待驻留小区包括：终端设备从至少一个候选小区中选择待驻留小区。
在再一种实现方式中，终端设备基于至少一个候选小区选择待驻留小区包括：终端设备从服务小区和邻区中选择待驻留小区，该邻区包括至少一个候选小区。在一些示例中，邻区还可以包括除去至少一个候选小区之外的非候选小区。
具体地，终端设备可以基于优先级信息来选择待驻留小区，关于优先级信息将在下面结合系统信息进行较为详细的描述。
系统信息可以是接入网设备发送给终端设备的，其中接入网设备为终端设备所在的服务小区的接入网设备。例如，参照312，终端设备接收来自接入网设备的系统信息。
在一些实施例中，系统信息包括服务小区对应的频率支持的网络切片。如此，终端设备可以基于该系统信息确定服务小区是否支持目标网络切片。可选地，该系统信息可以为SIB2或者可以为新定义的SIB。
举例来说，可以假设目标网络切片为S2。在一例中，系统信息可以通过“{S1，S2}”表示服务小区220支持的网络切片为S1和S2。那么，终端设备可以确定服务小区支持目标网络切片S2。在另一例中，系统信息可以通过“{S1}”表示服务小区220支持的网络切片为S1。那么，终端设备可以确定服务小区不支持目标网络切片S2。
在另一些实施例中，系统信息包括服务小区对应的频率的第一优先级，以及服务小区对应的频率支持的网络切片。如此，终端设备可以基于该系统信息确定服务小区是否支持目标网络切片；并且在确定支持的情况下进一步确定服务小区对应的频率支持的目标网络切片的第一优先级。可选地，该系统信息可以为SIB2或者可以为新定义的SIB。或者可选地，该系统信息可以包括第一系统信息和第二系统信息，第一系统信息包括服务小区对应的频率的第一优先级，第二系统信息包括服务小区对应的频率支持的网络切片。可选地，第一系统信息可以为SIB2，第二系统信息可以为新定义的SIB。
举例来说，可以假设目标网络切片为S2。在一例中，系统信息可以通过“P1”和“{S1，S2}”表示服务小区对应的频率的第一优先级为P1，服务小区220支持的网络切片为S1和S2。那么，终端设备可以确定服务小区支持目标网络切片S2，且服务小区对应的频率支持的目标网络切片的第一优先级为P1。在另一例中，系统信息可以通过“P1x”和“{S1}”表示服务小区对应的频率的第一优先级为P1x，服务小区220支持的网络切片为S1。那么，终端设备可以确定服务小区不支持目标网络切片S2，该系统信息中不存在服务小区对应的频率支持的目标网络切片的第一优先级。
在另一些实施例中，系统信息包括服务小区对应的频率支持的网络切片的第一优先级。如此，终端设备可以基于该系统信息确定(例如间接地)服务小区是否支持目标网络切片；并且如果支持的话进一步确定服务小区对应的频率支持的目标网络切片的第一优先级。可选地，该系统信息可以为SIB2或者可以为新定义的SIB。
示例性地，可以通过预先定义系统信息中的第一优先级的顺序与网络切片的对应关系。示例性地，假设针对3个不同的网络切片S1，S2和S3，系统信息中三个字段携带的三个第一优先级与S1，S2和S3对应。举例来说，可以假设目标网络切片为S2。在一例中，系统信息可以通过“P1x，P1，NULL(空)”表示服务小区对应的频率支持的网络切片的第一优先级分别为P1x，P1和空。那么，终端设备可以确定服务小区支持目标网络切片S2，且服务小区对应的频率支持的目标网络切片的第一优先级为P1。在另一例中，系统信息可以通过“P1x，NULL，NULL”表示服务小区对应的频率支持的网络切片的第一优先级分别为P1x，NULL，NULL。那么，终端设备可以确定服务小区不支持目标网络切片S2，该系统信息中的服务小区对应的频率支持的目标网络切片的第一优先级为空，或认为系统信息中不存在服务小区对应的频率支持的目标网络切片的第一优先级。
在另一些实施例中，系统信息包括服务小区对应的频率支持的网络切片以及服务小区对应的频率支持的网络切片的第一优先级。如此，终端设备可以基于该系统信息确定(例如直接地)服务小区是否支持目标网络切片；并且如果支持的话进一步确定服务小区对应的频率支持的目标网络切片的第一优先级。可选地，该系统信息可以为SIB2或者可以为新定义的SIB。
举例来说，可以假设目标网络切片为S2。在一例中，系统信息可以通过“{S1，P1x}，{S2，P1}”表示服务小区220支持的网络切片为S1和S2，服务小区220支持的网络切片S1的第一优先级为P1x，服务小区支持的网络切片S2的第一优先级为P1。那么，终端设备可以确定服务小区支持目标网络切片S2，且服务小区对应的频率支持的目标网络切片的第一优先级为P1。在另一例中，系统信息可以通过和“{S1，P1x}”表示服务小区220支持的网络切片为S1，服务小区220支持的网络切片S1的第一优先级为P1x。那么，终端设备可以确定服务小区不支持目标网络切片S2，该系统信息中不存在服务小区对应的频率支持的目标网络切片的第一优先级。
在另一些实施例中，系统信息包括服务小区对应的频率支持的网络切片以及邻区对应的频率支持的网络切片的第二优先级。可选地，系统信息可以为新定义的SIB。或者可选地，系统信息可以包括第一系统信息和第二系统信息，第一系统信息包括服务小区对应的频率支持的网络切片，第二系统信息包括邻区对应的频率支持的网络切片的第二优先级。可选地，第一系统信息可以为SIB2，第二系统信息可以为SIB4和/或SIB5。
举例来讲，系统信息可以通过“{S1，P21}，{S2，P22}”表示邻区230-1对应的频率支持的网络切片为S1和S2，且邻区230-1对应的频率支持的S1的第二优先级为P21，邻区230-1对应的频率支持的S2的第二优先级为P22。终端设备可以确定邻区230-1对应的频率支持目标网络切片S2，且邻区230-1对应的频率支持的目标网络切片S2的第二优先级为P22。”关于邻区对应的频率支持的网络切片的第二优先级与上面介绍的服务小区对应的频率支持的网络切片的第一优先级是类似的，因此这里不再赘述。
在另一些实施例中，系统信息包括服务小区对应的频率的第一优先级，服务小区对应的频率支持的网络切片以及邻区对应的频率支持的网络切片的第二优先级。可选地，系统信息可以为新定义的SIB。或者可选地，系统信息可以包括第一系统信息和第二系统信息。第一系统信息包括服务小区对应的频率的第一优先级和服务小区对应的频率支持的网络切片，第二系统信息包括邻区对应的频率支持的网络切片的第二优先级。或者，第一系统信息包括服务小区对应的频率的第一优先级，第二系统信息包括服务小区对应的频率支持的网络切片和邻区对应的频率支持的网络切片的第二优先级。可选地，第一系统信息可以为SIB2，第二系统信息可以为SIB4和/或SIB5。
这样，通过上面的实施例，系统信息可以包括以下至少一项：服务小区对应的频率支持的网络切片，或服务小区对应的频率支持的网络切片的第一优先级。从而终端设备能够基于系统信息确定服务小区是否支持目标网络切片。
在一些实施例中，系统信息包括邻区对应的频率支持的网络切片，以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。可选地，该系统信息可以为SIB4和/或SIB5。可选地，该系统信息可以为新定义的SIB。
示例性地，可以通过第一指示信息指示服务小区支持该网络切片，第二指示信息指示服务小区不支持该网络切片。举例来说，第一指示信息为1，第二指示信息为0；或者第一指示信息为0，第二指示信息为1。可理解，该举例只是示意，第一指示信息和/或第二指示信息可以采用其他的方式，第一指示信息和/或第二指示信息可以占用预定数量的比特，如1比特或多比特。
以第一指示信息为1，第二指示信息为0为例。系统信息可以通过“{S1，1}，{S2，1}”表示邻区230-1对应的频率支持的网络切片为S1和S2，且服务小区220支持网络切片S1，服务小区220也支持网络切片S2。那么终端设备可以基于该系统信息确定服务小区220支持目标网络切片S2，确定邻区230-1对应的频率支持目标网络切片S2。
在另一些实施例中，系统信息包括邻区对应的频率支持的网络切片的第二优先级，以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。可选地，该系统信息可以为SIB4和/或SIB5。可选地，该系统信息可以为新定义的SIB。
示例性地，可以通过预先定义系统信息中的第二优先级的顺序与网络切片的对应关系。示例性地，假设针对3个不同的网络切片S1，S2和S3，系统信息中三个字段携带的三个第二优先级与S1，S2和S3对应。举例来说，可以假设目标网络切片为S2。系统信息可以通过“{P21，1}，{P22，1}，{NULL，NULL}”表示邻区230-1对应的频率支持的网络切片S1的第二优先级为P21，邻区230-1对应的频率支持的网络切片S2的第二优先级为P22，且服 务小区220支持网络切片S1，服务小区220也支持网络切片S2。那么终端设备可以基于该系统信息确定服务小区220支持目标网络切片S2，确定(例如间接地)邻区230-1对应的频率支持目标网络切片S2，且邻区230-1对应的频率支持的目标网络切片S2的第二优先级为P22。
在另一些实施例中，系统信息包括邻区对应的频率支持的网络切片、邻区对应的频率支持的网络切片的第二优先级，以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。可选地，该系统信息可以为SIB4和/或SIB5。可选地，该系统信息可以为新定义的SIB。
举例来说，可以假设目标网络切片为S2。系统信息可以通过“{S1，P21，1}，{S2，P22，1}”表示邻区230-1对应的频率支持网络切片S1和S2，邻区230-1对应的频率支持的网络切片S1的第二优先级为P21，邻区230-1对应的频率支持的网络切片S2的第二优先级为P22，且服务小区220支持网络切片S1，服务小区220也支持网络切片S2。那么终端设备可以基于该系统信息确定服务小区220支持目标网络切片S2，确定(例如直接地)邻区230-1对应的频率支持目标网络切片S2，且邻区230-1对应的频率支持的目标网络切片S2的第二优先级为P22。
在另一些实施例中，系统信息包括服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片、以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。可选地，该系统信息可以为SIB4和/或SIB5。可选地，该系统信息可以为新定义的SIB。可选地，该系统信息可以包括第一系统信息和第二系统信息，第一系统信息包括服务小区对应的频率支持的网络切片的第一优先级，第二系统信息包括邻区对应的频率支持的网络切片以及与所述邻区对应的频率支持的网络切片对应的指示信息。可选地，第一系统信息可以为SIB2，第二系统信息可以为SIB4和/或SIB5。
在另一些实施例中，系统信息包括服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片的第二优先级、以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。可选地，该系统信息可以为SIB4和/或SIB5。可选地，该系统信息可以为新定义的SIB。可选地，该系统信息可以包括第一系统信息和第二系统信息，第一系统信息包括服务小区对应的频率支持的网络切片的第一优先级，第二系统信息包括邻区对应的频率支持的网络切片的第二优先级以及与所述邻区对应的频率支持的网络切片对应的指示信息。可选地，第一系统信息可以为SIB2，第二系统信息可以为SIB4和/或SIB5。
在另一些实施例中，系统信息包括服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片、邻区对应的频率支持的网络切片的第二优先级以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。可选地，该系统信息可以为SIB4和/或SIB5。可选地，该系统信息可以为新定义的SIB。可选地，该系统信息可以包括第一系统信息和第二系统信息，第一系统信息包括服务小区对应的频率支持的网络切片的第一优先级，第二系统信息包括邻区对应的频率支持的网络切片、邻区对应的频率支持的网络切片的第二优先级以及与所述邻区对应的频率支持的网络切片对应的指示信息。可选地，第一系统信息可以为SIB2，第二系统信息可以为SIB4和/或SIB5。
这样，通过上面的实施例，系统信息可以以下包括至少一项与邻区对应的频率支持的网络切片对应的指示信息，从而终端设备能够基于系统信息确定服务小区是否支持目标网络切片。该指示方式简单，对于信令交互的开销更小。
在上面关于系统信息的描述中，系统信息可以通过网络切片的标识来表示其包括服务小区对应的频率支持的网络切片，类似地，系统信息可以通过网络切片的标识来表示其包括邻区小区对应的频率支持的网络切片。网络切片的标识可以是以下至少一项：(1)S-NSSAI，(2)切片标识(Slice ID)，(3)切片组标识(Slice group ID)，(4)访问类别(Access Category，AC)，或(5)访问身份(Access Identity，AI)。
在上面关于系统信息的描述中，系统信息可以通过“小区重选优先级(cell reselection priority)”来表示服务小区对应的频率支持的网络切片的第一优先级，和/或表示邻区对应的频率支持的网络切片的第二优先级。可理解，如果涉及多个网络切片，那么针对每个(per)网络切片的标识而言，都存在“小区重选优先级”。示例性地，可以通过系统信息中的“小区重选优先级”字段来承载服务小区对应的频率支持的网络切片的第一优先级，和/或邻区对应的频率支持的网络切片的第二优先级。
可选地，“小区重选优先级”可以与网络切片的标识相对应。在一例中，网络切片的标识可以是S-NSSAI，相应的“小区重选优先级”为“S-NSSAI小区重选优先级(S-NSSAI cell reselection priority)”。在另一例中，网络切片的标识可以是切片ID，相应的“小区重选优先级”为“切片ID小区重选优先级(Slice ID cell reselection priority)”。在另一例中，网络切片的标识可以是切片组ID，相应的“小区重选优先级”为“切片组ID小区重选优先级(Slice Group ID cell reselection priority)”。在再一例中，网络切片的标识可以是AC，相应的“小区重选优先级”为“AC小区重选优先级(Access Catergory cell reselection priority)”。在又一例中，网络切片的标识可以是AI，相应的“小区重选优先级”为“AI小区重选优先级(Access Identity cell reselection priority)”。
可理解，上述针对系统信息的描述仅是示意的，例如系统信息可以为SIB2、SIB4、SIB5或新定义的SIB中的一项或多项，第一系统信息可以为SIB2、SIB4、SIB5或新定义的SIB中的一项或多项，第二系统信息可以为SIB2、SIB4、SIB5或新定义的SIB中的一项或多项。并且可理解，上述列出的实施例不是穷举的，本领域技术人员在此基础上还可以得到其他的实施例。另外，上述实施例在不矛盾的前提下，可以相互结合和替换。
图4示出了根据本公开实施例的小区重选的方法400的另一个示意流程图。图4的方法400包括步骤410至430。
410，基于至少一个候选小区选择待驻留小区。
420，判断该待驻留小区是否满足重选条件。如果不满足，返回410重新选择待驻留小区。如果满足，进行430。
430，在该待驻留小区满足重选条件的情况下，重选到该待驻留小区。
在410的一种实现方式中，可以从服务小区和至少一个候选小区中选择待驻留小区。
在一些实施例中，如果服务小区支持目标网络切片，则可以基于服务小区对应的频率支持的目标网络切片的第一优先级以及候选小区对应的频率支持的目标网络切片的第二优先级，从服务小区和至少一个候选小区中选择待驻留小区。
可理解，服务小区对应的频率支持的目标网络切片的第一优先级以及候选小区对应的频 率支持的目标网络切片的第二优先级可以从系统信息中获取，如上所述，这里不再赘述。
图5示出了根据本公开实施例的另一种通信系统500的示意图。图5中的系统500在图2的系统200的基础上，标记出了服务小区对应的频率支持的网络切片的信息，和邻区对应的频率支持的网络切片的信息。
如图所示，在服务小区220中通过“f1:{S1，S2，P1}”表示服务小区220对应的频率f1支持的网络切片为S1和S2，且f1支持的S1的优先级为P1，f1支持的S2的优先级也为P1。
在邻区230-1中通过“f2:{S1，P21}，f2:{S2，P22}”表示邻区230-1对应的频率f2支持的网络切片为S1和S2，且f2支持的S1的第二优先级为P21，f2支持的S2的第二优先级为P22。
在邻区230-2中通过“f3:{S1，P31}，f3:{S2，P32}，f3:{S3，P33}”表示邻区230-2对应的频率f3支持的网络切片为S1，S2和S3，且f3支持的S1的第二优先级为P31，f3支持的S2的第二优先级为P32，f3支持的S3的第二优先级为P33。
应注意的是，在图5中示出了服务小区220对应的频率f1，邻区230-1对应的频率f2，邻区230-2对应的频率f3。可选地，系统信息可以包括服务小区对应的频率和/或邻区对应的频率。可选地，终端设备210可以从其他信令获取服务小区对应的频率和/或邻区对应的频率，例如从MIB或SIB1获取，本公开对此不限定。另外，在下面的其他通信系统中也图示出了服务小区对应的频率和邻区对应的频率，应该进行类似的理解和解释，下文不再重复。
图6示出了根据本公开实施例的另一种通信系统600的示意图。图6中的系统600在图2的系统200的基础上，标记出了服务小区对应的频率支持的网络切片的信息，和邻区对应的频率支持的网络切片的信息。
如图所示，在服务小区220中通过“f1:{S1，P1x}，f1:{S2，P1}”表示服务小区220对应的频率f1支持的网络切片为S1和S2，且f1支持的S1的优先级为P1x，f1支持的S2的优先级为P1。
图6中示出的邻区230-1和邻区230-2对应的频率支持的网络切片的第二优先级等信息与图5中的相同，这里不再重复。
在服务小区支持目标网络切片的实现方式中，如果存在至少一个“候选小区对应的频率支持的目标网络切片的第二优先级”高于“服务小区对应的频率支持的目标网络切片的第一优先级”，则可以将“候选小区对应的频率支持的目标网络切片的第二优先级”最大的候选小区确定为待驻留小区。如果不存在高于“服务小区对应的频率支持的目标网络切片的第一优先级”的“候选小区对应的频率支持的目标网络切片的第二优先级”，且存在至少一个“候选小区对应的频率支持的目标网络切片的第二优先级”等于“服务小区对应的频率支持的目标网络切片的第一优先级”，则基于第一准则选择待驻留小区。如果“候选小区对应的频率支持的目标网络切片的第二优先级”低于“服务小区对应的频率支持的目标网络切片的第一优先级”，则基于第二准则选择待驻留小区。关于第一准则和第二准则，下文将进一步解释。
下面假设目标网络切片为S2，并结合图5中的通信系统500和图6中的通信系统600举例进行阐述。
在图5和图6所示的通信系统中，服务小区220对应的频率f1支持S2，且S2的第一优先级为P1。邻区230-1对应的频率f2支持网络切片S2，且f2支持的S2的第二优先级为P22。邻区230-2对应的频率f3支持网络切片S2，且f3支持的S2的第二优先级为P32。
在该示例中，可以将P1与P22和P32进行比较，并存在不同情形。
图7示出了根据本公开实施例的选择待驻留小区的过程700的一个示意流程图。图7示出的过程700包括：
710，比较P1与P22、P1与P32。
720，如果比较结果是P22高于P1或者P32高于P1，则进行730；否则进行740。
730，基于最高优先级确定待驻留小区。举例来说，若P1、P22和P32中的最高优先级是P22，则将P22对应的邻区230-1确定为待驻留小区。若P1、P22和P32中的最高优先级是P32，则将P32对应的邻区230-2确定为待驻留小区。
740，如果比较结果是P22等于P1和/或P32等于P1，则进行750；否则进行760。
750，基于第一准则确定待驻留小区。示例性地，第一准则可以是R准则。
R准则是根据小区信号质量，针对每一个邻小区和服务小区计算一个R(等级，Rank)值，然后根据R值大小排序，如果邻区的R值大于服务小区的R值，则认为满足重选标准，如果有多个邻区都满足的话，就选R值最大的那个邻区。
例如，如果P22＝P32＝P1，则将服务小区220、邻区230-1和邻区230-2中R值最大的小区确定为待驻留小区。如果P22＝P1且P32<P1，则将服务小区220和邻区230-1中R值最大的小区确定为待驻留小区。如果P32＝P1且P22<P1，则将服务小区220和邻区230-2中R值最大的小区确定为待驻留小区。
服务小区220的R值可以表示为Rs，通过下式得到：Rs＝Qmeas,s+Qhyst–Qoffsettemp。
邻区230的R值可以表示为Rn，通过下式得到：Rn＝Qmeas,n-Qoffset–Qoffsettemp。
在上面的公式中，Qmeas,s表示服务小区的信号质量，是由终端设备210通过测量所获得的，例如Qmeas,s可以表示服务小区的参考信号接收功率(Reference Signal Receiving Power，RSRP)值。Qmeas,n表示邻区的信号质量，是由终端设备210通过测量所获得的，例如Qmeas,n可以表示邻区的RSRP值。
在上面的公式中，Qhyst表示服务小区的重选迟滞值。该值可以是终端设备210从系统信息中获取的，例如从SIB2中获取。作为一例，Qhyst可以被承载于SIB2的小区重选信息公共(cell reselection Info Common)字段中。可理解，Qhyst的值越大，代表服务小区的边界越大，则越难重选到邻区。
在上面的公式中，Qoffset表示邻区偏移，若邻区为同频邻区，则Qoffset＝Qoffsetcell；若邻区为异频邻区，则Qoffset＝QoffsetCell+QoffsetFreq；其中，Qoffsetcell，QoffsetCell和QoffsetFreq是终端设备210从系统信息中获取的。例如，可以从SIB3获取Qoffsetcell，可以从SIB4获取QoffsetCell和QoffsetFreq。作为一例，Qoffsetcell可以被承载于SIB3的同频邻区信息(Intra Freq Neigh Cell Info)字段中。作为一例，QoffsetCell和QoffsetFreq可以被承载于SIB4的频间载频信息(Inter Freq Carrier Freq Info)字段中。
在上面的公式中，Qoffsettemp是用于第一准则(R准则)的计算参数，该参数可以是终端设备210从系统信息中获取的，例如可以从SIB1中获取。
760，基于第二准则确定待驻留小区。
示例性地，第二准则可以是将小区质量高于服务小区质量的候选小区确定为待驻留小区。可选地，小区质量可以是小区的RSRP。
在另一些实施例中，如果服务小区不支持目标网络切片，则可以基于目标网络切片在服 务小区对应的频率的第一优先级以及候选小区对应的频率支持的目标网络切片的第二优先级，从服务小区和至少一个候选小区中选择待驻留小区。
可理解，候选小区对应的频率支持的目标网络切片的第二优先级可以从系统信息中获取，如上所述，这里不再赘述。可理解，由于服务小区不支持目标网络切片，因此终端设备210无法从系统信息获取服务小区对应的频率支持的目标网络切片的第一优先级。
在服务小区不支持目标网络切片的该实施例中，终端设备210可以将目标网络切片在服务小区对应的频率的第一优先级设定为第一预设值，该第一预设值低于候选小区对应的频率支持的目标网络切片的第二优先级。如此，即使是在服务小区不支持目标网络切片的情形下，也可以通过设定第一预设值的方式来定义目标网络切片在服务小区对应的频率的第一优先级，进而在小区重选时将服务小区考虑在内。
在服务小区不支持目标网络切片的该实施例中，可以将目标网络切片在服务小区对应的频率的第一优先级与候选小区对应的频率支持的目标网络切片的第二优先级进行比较，并基于比较的结果来选择待驻留小区。该过程与上面的实施例中结合图7的过程类似，这里不再赘述。
在410的另一种实现方式中，可以从至少一个候选小区中选择待驻留小区。示例性地，如果服务小不支持目标网络切片，则可以基于候选小区对应的频率支持的目标网络切片的第二优先级，从至少一个候选小区中选择待驻留小区。
可理解，候选小区对应的频率支持的目标网络切片的第二优先级可以从系统信息中获取，如上所述，这里不再赘述。
具体地，如果只存在一个候选小区，那么可以将该候选小区确定为待驻留小区。相反，如果至少一个候选小区的数量大于或等于2个(即至少两个候选小区)，那么可以通过比较候选小区对应的频率支持的网络切片的第二优先级来从至少两个候选小区中选择待驻留小区。
示例性地，可以将至少两个候选小区对应的频率支持的网络切片的至少两个第二优先级进行比较。如果至少两个候选小区对应的频率支持的网络切片的至少两个第二优先级不彼此相等，则将候选小区对应的频率支持的网络切片的第二优先级最大的候选小区确定为待驻留小区。如果至少两个候选小区对应的频率支持的网络切片的至少两个第二优先级两两相等，则基于第一准则选择待驻留小区。
下面将假设目标网络切片为S2，并结合图8中的通信系统800举例进行阐述。
图8示出了根据本公开实施例的另一种通信系统800的示意图。图8中的系统800在图2的系统200的基础上，标记出了服务小区对应的频率支持的网络切片的信息，和邻区对应的频率支持的网络切片的信息。
如图所示，在服务小区220中通过“f1:{S1，P1x}”表示服务小区220对应的频率f1支持的网络切片为S1，且f1支持的S1的优先级为P1x。可以看出，服务小区220对应的频率f1不支持目标网络切片S2。
图8中示出的邻区230-1和邻区230-2对应的频率支持的网络切片的第二优先级等信息与图5中的相同，这里不再重复。
在图8所示的通信系统800中，服务小区220不支持S2。邻区230-1对应的频率f2支持网络切片S2，且f2支持的S2的第二优先级为P22。邻区230-2对应的频率f3支持网络切片S2，且f3支持的S2的第二优先级为P32。
在图8所示的通信系统800中，可以将P22与P32进行比较，具体可以参考图9的说明。
图9示出了根据本公开实施例的选择待驻留小区的过程900的另一个示意流程图。图9示出的过程900包括：
910，将P22与P32进行比较。
920，如果比较结果是P22等于P32，则进行930；否则进行940。
930，基于第一准则确定待驻留小区。
示例性地，第一准则可以是R准则。在该示例中，可以计算邻区230-1的R值和邻区230-2的R值，将R值较大的邻区确定为待驻留小区。举例来说，如果邻区230-1的R值大于邻区230-2的R值，则将邻区230-1确定为待驻留小区。如果邻区230-1的R值小于邻区230-2的R值，则将邻区230-2确定为待驻留小区。
可以通过Rn＝Qmeas,n-Qoffset–Qoffsettemp来计算邻区的R值，关于该公式的介绍可以参见上述结合图7的750的描述，为了简洁，这里不再重复。
940，基于最高优先级确定待驻留小区。
示例性地，如果P22高于P32，则将邻区230-1确定为待驻留小区。如果P22低于P32，则将邻区230-2确定为待驻留小区。
这样，本公开实施例中，终端设备为了执行切片通信，可以只考虑支持目标网络切片的频率，而不考虑不支持目标网络切片的频率。如此，在选择待驻留小区时，可以针对较小的范围进行比较和选择，减小了计算量，提高了处理效率。
在410的再一种实现方式中，终端设备可以从服务小区和邻区中选择待驻留小区，其中邻区包括至少一个候选小区。
具体地，可以基于以下至少一项来选择待驻留小区：目标网络切片在服务小区对应的频率的第一优先级、候选小区对应的频率支持目标网络切片的第二优先级、以及目标网络切片在邻区中除至少一个候选小区之外的非候选小区对应的频率的第二优先级。
在一些实施例中，如果服务小区支持目标网络切片，邻区中都是候选小区(即邻区对应的频率都支持目标网络切片)，则可以基于服务小区对应的频率支持的目标网络切片的第一优先级以及候选小区对应的频率支持目标网络切片的第二优先级。可理解，在该实施例中，目标网络切片在服务小区对应的频率的第一优先级也就是服务小区对应的频率支持的目标网络切片的第一优先级。
在另一些实施例中，如果服务小区不支持目标网络切片，邻区中都是候选小区(即邻区对应的频率都支持目标网络切片)，则可以基于目标网络切片在服务小区对应的频率的第一优先级以及候选小区对应的频率支持目标网络切片的第二优先级。在该实施例中，终端设备可以将目标网络切片在服务小区对应的频率的第一优先级设定为第一预设值，该第一预设值低于候选小区对应的频率支持的目标网络切片的第二优先级。
在另一些实施例中，如果服务小区支持目标网络切片，邻区包括候选小区和非候选小区，其中候选小区对应的频率支持目标网络切片，非候选小区对应的频率不支持目标网络切片。那么，终端设备可以基于服务小区对应的频率支持的目标网络切片的第一优先级、候选小区对应的频率支持目标网络切片的第二优先级、以及目标网络切片在非候选小区对应的频率的第二优先级，从服务小区和邻区中选择待驻留小区。
可理解，在该实施例中，目标网络切片在服务小区对应的频率的第一优先级也就是服务 小区对应的频率支持的目标网络切片的第一优先级。可理解，由于非候选小区不支持目标网络切片，因此终端设备无法从系统信息获取非候选小区对应的频率支持的目标网络切片的第二优先级。
在该实施例中，终端设备可以将目标网络切片在非候选小区对应的频率的第二优先级设定为第二预设值，该第二预设值低于候选小区对应的频率支持的目标网络切片的第二优先级。
在另一些实施例中，如果服务小区不支持目标网络切片，邻区包括候选小区和非候选小区，其中候选小区对应的频率支持目标网络切片，非候选小区对应的频率不支持目标网络切片。那么，终端设备可以基于目标网络切片在服务小区对应的频率的第一优先级、候选小区对应的频率支持目标网络切片的第二优先级、以及目标网络切片在非候选小区对应的频率的第二优先级，从服务小区和邻区中选择待驻留小区。
可理解，在该实施例中，由于服务小区和非候选小区不支持目标网络切片，因此终端设备无法从系统信息获取服务小区对应的频率支持的目标网络切片的第一优先级，也无法获取非候选小区对应的频率支持的目标网络切片的第二优先级。在该实施例中，终端设备可以将目标网络切片在服务小区对应的频率的第一优先级设定为第一预设值，该第一预设值低于候选小区对应的频率支持的目标网络切片的第二优先级。终端设备可以将目标网络切片在非候选小区对应的频率的第二优先级设定为第二预设值，该第二预设值低于候选小区对应的频率支持的目标网络切片的第二优先级。
第一预设值和第二预设值可以相等或不相等，本公开对此不限定。第一预设值和第二预设值小于候选小区对应的频率支持的目标网络切片的第二优先级。示例性地，第一预设值和第二预设值可以是进行比较的所有第一优先级和第二优先级中的最低值。在一些示例中，第一预设值和第二预设值可以等于优先级取值范围的最低值。作为一例，在优先级的取值范围为0至7的情形下，终端设备可以将第一预设值和第二预设值设为0，通过此方式，可以在进行优先级比较时，将不支持目标网络切片的频率作为最后考虑频率或者完全排除不支持目标网络切片的频率。
如此，即使是针对不支持目标网络切片的非候选小区对应的频率，可以通过设定第二预设值的方式来定义非候选小区对应的频率支持的目标网络切片的第二优先级。进而，终端设备210可以将服务小区对应的频率支持的目标网络切片的第一优先级与邻区对应的频率支持的目标网络切片的第二优先级进行比较；并基于比较的结果来选择待驻留小区。
该比较的过程与上面结合图7所描述的过程类似，为避免重复，这里不再赘述。
这样，终端设备能够基于目标网络切片选择待驻留小区，从而能够确保待驻留小区支持目标网络切片，进而能够满足终端设备的业务需求。
下面将结合图10描述图4中的420和430。
图10示出了根据本公开实施例的小区重选的方法1000的一个示意流程图。图10示出的过程1000包括：
1010，终端设备210判断该待驻留小区是否满足重选条件。如果满足，则进行1020；否则进行1050。
示例性地，重选条件与待驻留小区对应的频率支持的目标网络切片的第二优先级有关，如果待驻留小区对应的频率支持的目标网络切片的第二优先级高于服务小区对应的频率支持的目标网络切片的第一优先级(如图7中730所确定的待驻留小区)或者如果待驻留小区对 应的频率支持的目标网络切片的第二优先级高于其他候选小区对应的频率支持的目标网络切片的第二优先级(如图9中940所确定的待驻留小区)，则重选条件也可以被称为高优先级重选条件。如果待驻留小区对应的频率支持的目标网络切片的第二优先级等于服务小区对应的频率支持的目标网络切片的第一优先级(如图7中750所确定的待驻留小区)或者如果待驻留小区对应的频率支持的目标网络切片的第二优先级等于另一候选小区对应的频率支持的目标网络切片的第二优先级(如图9中930所确定的待驻留小区)，则重选条件也可以被称为同等优先级重选条件。如果待驻留小区对应的频率支持的目标网络切片的第二优先级低于服务小区对应的频率支持的目标网络切片的第一优先级(如图7中760所确定的待驻留小区)，则重选条件也可以被称为低优先级重选条件。
结合上面的图7和图9，在730或940之后，可以判断待驻留小区是否满足高优先级重选条件，如果满足，则重选到该待驻留小区，否则重新选择待驻留小区直到完成重选。
以图7的流程700为例，在730之后所判断的高优先级重选条件可以为：(1)如果服务小区的系统信息(如SIB2)包括服务小区低质量阈值(Thresh Serving,LowQ)，且终端设备210在服务小区220驻留的时长超过第一时长阈值(如1秒或其他值)，且待驻留小区在第一时间间隔期间满足Squal>Thresh X,HighQ；其中，Squal表示待驻留小区的质量，Thresh X,HighQ表示高质量阈值；其中第一时间间隔可以为重选间隔，例如表示为T reselectionRAT。(2)如果服务小区的系统信息(如SIB2)不包括服务小区低质量阈值(Thresh Serving,LowQ)，且终端设备210在服务小区220驻留的时长超过第一时长阈值(如1秒或其他值)，且待驻留小区在第一时间间隔期间满足Srxlev>Thresh X,HighP；其中，Srxlev表示待驻留小区的质量，Thresh X,HighP表示高质量阈值；其中第一时间间隔可以为重选间隔，例如表示为T reselectionRAT。
结合上面的图7和图9，在750或930之后，可以判断待驻留小区是否满足同等优先级重选条件，如果满足，则重选到该待驻留小区，否则重新选择待驻留小区直到完成重选。
以图7的流程700为例，在750之后所判断的同等优先级重选条件可以为：终端设备210在服务小区220驻留的时长超过第二时长阈值(如1秒或其他值)，且待驻留小区在第二时间间隔期间一直满足该待驻留小区的R值最大，其中第二时间间隔可以为重选间隔，例如表示为T reselectionRAT。
结合上面的图7，在760之后，可以判断待驻留小区是否满足低优先级重选条件，如果满足，则重选到该待驻留小区，否则重新选择待驻留小区直到完成小区重选。
以图7的流程700为例，在760之后所判断的低优先级重选条件可以为：(1)如果服务小区的系统信息(如SIB2)包括服务小区低质量阈值(Thresh Serving,LowQ)，且终端设备210在服务小区220驻留的时长超过第三时长阈值(如1秒或其他值)，且服务小区满足Squal(s)<Thresh Serving,LowQ，且待驻留小区在第三时间间隔期间满足Squal(n)>Thresh X,LowQ；其中Squal(s)表示服务小区的质量，Squal(n)表示待驻留小区的质量，Thresh X,LowQ表示低质量阈值；其中第三时间间隔可以为重选间隔，例如表示为T reselectionRAT。(2)如果服务小区的系统信息(如SIB2)不包括服务小区低质量阈值(Thresh Serving,LowQ)，且终端设备210在服务小区220驻留的时长超过第一时长阈值(如1秒或其他值)，且服务小区满足Srxlev(s)<Thresh Serving,LowP，且待驻留小区在第三时间间隔期间满足Srxlev(n)>Thresh X,LowP；其中，Srxlev(s)表示服务小区的质量，Srxlev(n)表示待驻留小区的质量，Thresh X,LowP表示低质量阈值；其中第三时间间隔可以为重选间隔，例如表示为T reselectionRAT。
在上面描述的重选条件中，涉及到若干个阈值(也称为门限值)。
Thresh X,HighP和Thresh X,HighQ是高优先级重选条件中所涉及的两个质量阈值，X可以代表频率，即不同的频率可以有对应的阈值先级，举例来讲，频率f1对应的阈值Thresh f1,HighP可以不等于频率f2对应的阈值Thresh f2,HighP。Thresh X,HighP和Thresh X,HighQ可以是终端设备210从系统信息中获取的。例如，可以从SIB4获取同系统异频的阈值，作为一例，可以承载在SIB4的频间载频信息(Inter Freq Carrier Freq Info)字段中；可以从SIB5获取异系统的阈值，作为一例，可以承载在SIB5的异系统载频(Carrier Freq EUTRA)字段中。
Thresh Serving,LowP和Thresh Serving,LowQ是低优先级重选条件中涉及的两个阈值，分别是服务小区的功率阈值和质量阈值。Thresh Serving,LowP和Thresh Serving,LowQ可以是终端设备210从系统信息中获取的。例如，可以从SIB2获取该阈值，作为一例，可以承载在SIB2的小区重选服务频率信息(cell Reselection Serving Freq Info)字段中。Thresh X,LowP和Thresh X,LowQ是低优先级重选条件中涉及的两个阈值，分别是低优先级邻区的功率阈值和质量阈值，X可以代表频率，即不同的频率可以有对应的不同优先级，举例来讲，频率f1对应的阈值Thresh f1,LowQ可以不等于频率f2对应的阈值Thresh f2,LowQ。Thresh X,LowP和Thresh X,LowQ可以是终端设备210从系统信息中获取的。例如，可以从SIB4获取同系统异频的阈值，作为一例，可以承载在SIB4的频间载频信息(Inter Freq Carrier Freq Info)字段中；可以从SIB5获取异系统的阈值，作为一例，可以承载在SIB5的异系统载频(Carrier Freq EUTRA)字段中。
1020，终端设备210接收来自待驻留小区的接入网设备的系统信息。
在一些示例中，来自待驻留小区的接入网设备的系统信息可以为SIB1或SIB2，或者也可以为其他类型系统信息，本公开对此不限定。来自待驻留小区的接入网设备的系统信息可以包括该待驻留小区是否被禁止(barred)，是否被保留(reserved)，接入等级等。
1030，终端设备210可以基于来自待驻留小区的接入网设备的系统信息判断该待驻留小区是否可以正常驻留。如果确定无法驻留，则进行1050；否则进行1040。
具体地，如果确定待驻留小区可以正常驻留，则进行1040，否则进行1050。举例来说，如果来自待驻留小区的接入网设备的系统信息指示该待驻留小区未被禁止且未被保留，则可以确定该待驻留小区可以正常驻留。
具体地，如果确定待驻留小区不能正常驻留(即无法驻留)，则进行1050，否则进行1040。举例来说，如果来自待驻留小区的接入网设备的系统信息包含“该待驻留小区被禁止”或“该待驻留小区被保留”的指示，则可以确定该待驻留小区无法驻留。
1040，终端设备210重选到该待驻留小区，从而完成小区重选。
1050，终端设备210重新选择待驻留小区。在此之后，可以从1010开始重新执行判断，直到完成小区重选。
示例性地，1050中重新选择待驻留小区的过程可以包括：将不满足重选条件的待驻留小区从候选小区中删除，重新执行410。或者可以理解为，将不满足重选条件的待驻留小区从邻区中删除以不再将该无法驻留的小区作为邻区，然后再从更新后的邻区中选择待驻留小区。由于重新选择待驻留小区的过程与上述410类似，因此本公开中不再赘述。
如此，终端设备210能够基于目标网络切片选择待驻留小区，进而可以基于重选条件完成小区重选，这样能够确保重选后的小区能够满足终端设备210上的业务需求，降低了访问时延，提高了终端设备的服务体验。
图11是根据本公开实施例的小区重选的方法1100的一个示意交互图。图11中涉及终端设备210和接入网设备240，其中，接入网设备240可以是终端设备210所在的服务小区的接入网设备。举例来说，接入网设备240可以是终端设备210的服务接入网设备。
图11所示的交互信令图为概述的，该示出的通信过程仅为示例性的，而非限制性的。本公开的实施例可以包括图11中未示出的交互信令，或者省略图11中示出的某些信令。
在方法1100中，终端设备210确定1110目标网络切片。
示例性地，可以通过终端设备210的NAS层向AS层发送的网络切片的标识，来确定目标网络切片。关于1110的具体实现方式，可以参照上述结合图3中310的相关描述，为了简洁，这里不再重复。
在方法1100中，终端设备210可以基于目标网络切片确定1120至少一个候选小区，其中候选小区对应的频率支持该目标网络切片。
示例性地，终端设备210可以基于来自接入网设备240的系统信息，来确定至少一个候选小区。示例性地，系统信息可以包括第一系统信息和第二系统信息。
具体地，接入网设备240可以发送系统信息，从而终端设备210能够接收到该系统信息。系统信息可以是由接入网设备240以广播的形式，定期或不定期地发送的。
参照图11，接入网设备240发送1112第一系统信息，从而终端设备210能够接收该第一系统信息。接入网设备240发送1114第二系统信息，从而终端设备210能够接收该第二系统信息。
在一些实施例中，终端设备210可以预先获取服务小区的服务频率，假设为f1。举例来说，终端设备210可以接收接入网设备240的另一系统信息，并从该另一系统信息中获知服务频率。这里的“另一系统信息”可以在第一系统信息之前发送，或者可以具有比第一系统信息更短的发送间隔。例如，“另一系统信息”可以为主信息块(Master Information Block，MIB)或系统信息块1(System Information Block1，SIB1)等，本公开对此不限定。
第一系统信息可以包括第一优先级，表示为P1，用于指示f1的优先级为P1。应注意，尽管本公开中将P1称为第一优先级，但“第一”并不是对优先级高低的限定，而只是为了作为不同优先级之间的区分。
可选地，在另一些实施例中，第一系统信息还可以进一步包括服务小区对应的频率(即服务频率)支持的网络切片和/或服务小区对应的频率支持的网络切片的第一优先级。
可选地，在一些示例中，第一系统信息还可以包括服务小区对应的频率(即服务频率)支持的网络切片，例如网络切片的标识。在一例中，系统信息可以通过“{S1，S2}”表示服务小区220支持的网络切片为S1和S2。
可选地，在一些示例中，第一系统信息还可以包括服务小区对应的频率(即服务频率)支持的网络切片的第一优先级。示例性地，可以通过预先定义系统信息中的第一优先级的顺序与网络切片的对应关系。示例性地，假设针对3个不同的网络切片S1，S2和S3，系统信息中三个字段携带的三个第一优先级与S1，S2和S3对应。该方式可以间接地包括服务小区对应的频率支持的网络切片。在一例中，系统信息可以通过“P1x，P1，NULL(空)”表示服务小区对应的频率支持的网络切片的第一优先级分别为P1x，P1和空，且间接地包括服务小区对应的频率支持的网络切片为S1和S2。
可选地，在一些示例中，第一系统信息还可以包括服务小区对应的频率支持的网络切片 (如标识)以及服务小区对应的频率支持的网络切片的第一优先级。在一例中，系统信息可以通过“{S1，P1x}，{S2，P1}”表示服务小区对应的频率支持的网络切片为S1和S2，且服务小区对应的频率支持的S1的第一优先级为P1x，服务小区对应的频率支持的S2的第一优先级为P1。
可选地，第一系统信息还可以进一步包括邻区对应的频率支持的网络切片的第二优先级。
第二系统信息可以包括邻区对应的频率支持的网络切片和/或邻区对应的频率支持的网络切片的第二优先级。
可选地，在一些示例中，第二系统信息包括邻区对应的频率支持的网络切片，以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
在一些示例中，该指示信息可以具有预设长度，例如一比特或多比特。以一比特(1bit)为例，该指示信息为第一值可以表示服务小区支持对应的网络切片，该指示信息为第二值表示服务小区不支持对应的网络切片。在一例中，第一值为1，第二值为0。在另一例中，第一值为0，第二值为1。可理解，也可以通过其他方式来指示服务小区的切片信息，本公开中不再罗列。
假设指示信息为1表示支持，指示信息为0表示不支持。在一例中，系统信息可以通过“{S1，1}，{S2，1}”表示邻区230-1对应的频率支持的网络切片为S1和S2，且服务小区220支持网络切片S1，服务小区220也支持网络切片S2。
可选地，在一些示例中，第二系统信息包括邻区对应的频率支持的网络切片的第二优先级，以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。示例性地，可以通过预先定义系统信息中的第二优先级的顺序与网络切片的对应关系。示例性地，假设针对3个不同的网络切片S1，S2和S3，系统信息中三个字段携带的三个第二优先级与S1，S2和S3对应。假设指示信息为1表示支持，指示信息为0表示不支持。在一例中，系统信息可以通过“{P21，1}，{P22，1}，{NULL，NULL}”表示邻区230-1对应的频率支持的网络切片S1的第二优先级为P21，邻区230-1对应的频率支持的网络切片S2的第二优先级为P22，且服务小区220支持网络切片S1，服务小区220也支持网络切片S2。
可选地，在一些示例中，第二系统信息包括邻区对应的频率支持的网络切片、邻区对应的频率支持的网络切片的第二优先级，以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。假设指示信息为1表示支持，指示信息为0表示不支持。在一例中，系统信息可以通过“{S1，P21，1}，{S2，P22，1}”表示邻区230-1对应的频率支持网络切片S1和S2，邻区230-1对应的频率支持的网络切片S1的第二优先级为P21，邻区230-1对应的频率支持的网络切片S2的第二优先级为P22，且服务小区220支持网络切片S1，服务小区220也支持网络切片S2。
可选地，第二系统信息还可以进一步包括服务小区对应的频率支持的网络切片的第一优先级。
关于第一系统信息和第二系统信息，可以参照上面结合图3所描述的系统信息，为了简洁，这里不再重复。
示例性地，本公开实施例对切片信息(包括频率、网络切片、优先级)的信元结构不作限定，例如可以以切片为索引，或者可以以频率为索引，等等。
以第二系统信息为例，在一种实现方式中，可以以切片为索引，作为一个示意，可以如表1所示。表1的示例中，邻区的切片信息以切片列表的形式示出，包括切片标识以及频率列表，进一步包括频率列表中的频率标识和频率优先级。也就是说，可以从切片的维度示出。可理解的是，表1仅是示意，不构成对本公开实施例的限制，例如，优先级可以为小区重选优先级(cell Reselection Priority)，可选地，还可以进一步包括子优先级，如小区重选子优先级(cell Reselection Sub Priority)。
表1
>切片列表
>>切片标识
>>频率列表
>>>频率标识
>>>优先级
以第二系统信息为例，在另一种实现方式中，可以以频率为索引，作为一个示意，可以如表2所示。表2的示例中，邻区的切片信息以频率列表的形式示出，包括频率标识以及切片列表，进一步包括切片列表中的切片标识和切片优先级。也就是说，可以从频率的维度示出。可理解的是，表2仅是示意，不构成对本公开实施例的限制，例如，优先级可以为小区重选优先级(cell Reselection Priority)，可选地，还可以进一步包括子优先级，如小区重选子优先级(cell Reselection Sub Priority)。
表2
>频率列表
>>频率标识
>>切片列表
>>>切片标识
>>>优先级
应理解的是，邻区可能是同系统异频小区或者可能是异系统小区。对于同系统中的相同频率而言，可以具有相同的优先级。对于同系统中的不同频率而言，可以具有不同的优先级。对于异系统中的相同或不同频率而言，可以具有相同或不同的优先级。
示例性地，第一系统信息可以是SIB2，第二系统信息可以是SIB4和/或SIB5，例如SIB4中包括第一类邻区(如同系统异频邻区)的切片信息，SIB5中包括第二类邻区(如异系统邻区)的切片信息。但是本公开对此不限定。
在一些实施例中，第一系统信息可以为SIB2、SIB4、SIB5或新定义的SIB中的一项或多项，第二系统信息可以为SIB2、SIB4、SIB5或新定义的SIB中的一项或多项。在另一些实施例中，第一系统信息和第二系统信息可以被合并为一个系统信息，在此情况下，图11中1112和1114变为一个步骤，其中系统信息可以为SIB2、SIB4、SIB5或新定义的SIB中的一项或多项。
另外，应注意的是，尽管图11中示出发送1112第一系统信息的过程在1110之后，但是本公开对此不限定，例如1112可以在1110之前执行，或者可选地可以与1110并行地执行。类似地，1114可以在1110之前或之后或与1110并行地执行。
在方法1100中，终端设备210可以基于系统信息来确定1120至少一个候选小区。
在一些示例中，可以基于第二系统信息来确定至少一个候选小区。
示例性地，若第二系统信息指示某频率支持目标网络切片，则可以将该频率上部署的所有邻区都作为候选小区，即该频率上部署的所有邻区都属于候选小区。举例来说，若第一频率支持目标网络切片，则第一频率上部署的所有小区都属于候选小区。若第二频率不支持目标网络切片，则第二频率上部署的所有小区都不属于候选小区。
通过这样的方式，1120中所确定的候选小区对应的频率支持该目标网络切片。可理解，1120中所确定的候选小区的数量可以为一个或多个。
在方法1100中，终端设备210可以基于至少一个候选小区进行1130小区重选。
具体地，终端设备210可以基于至少一个候选小区选择待驻留小区，然后再基于待驻留小区完成小区重选。示例性地，终端设备210可以基于至少一个候选小区选择待驻留小区，判断该待驻留小区是否满足重选条件，并在该待驻留小区满足重选条件的情况下，重选到该待驻留小区。
在一种实现方式中，终端设备210可以从服务小区和至少一个候选小区中选择待驻留小区。在另一种实现方式中，终端设备210可以从至少一个候选小区中选择待驻留小区。在再一种实现方式中，终端设备210可以从服务小区和邻区中选择待驻留小区，其中邻区包括至少一个候选小区。
可理解，关于选择待驻留小区的过程可以参照上述结合图4的410的描述，为了简洁，此处不再重复。
为了更全面地介绍在选择待驻留小区之后的小区重选过程，下面首先通过图12介绍本公开实施例可以应用的两种不同的情形。
本公开实施例可以应用于两种不同的情形：(1)情形1，频率支持的网络切片等价于频率上部署的小区支持的网络切片，即频率支持的网络切片不需要区分小区，简称为不区分小区的情形。该情形也可以称为切片与频率具有绑定关系，也就是说，对于小区而言，只需要确定对应的频率支持的网络切片即可，而不需要区分小区。在这种情形下，如果两个不同的小区的频率相同，那么这两个不同的小区所支持的网络切片也是相同的，可以统一表述为该频率所支持的网络切片。(2)情形2，频率支持的网络切片不一定等价于频率上部署的小区支持的网络切片，即频率支持的网络切片需要区分小区，简称为区分小区的情形。该情形也可以称为切片不与频率具有绑定关系，也就是说，对于小区而言，其对应的频率支持的网络切片可能会多于该小区支持的网络切片，即需要区分小区。在这种情形下，即使两个不同的小区的频率相同，这两个不同的小区所支持的网络切片也可能是不同的。参照图12示意性描述这两种不同的情形。
图12示出了根据本公开实施例的切片部署情形1200的一个示意图。在图12中包括4个不同的小区，分别为小区1210，小区1220，小区1230和小区1240。
在图12中，频率F1支持网络切片S1，且不区分小区。如图所示，小区1210和小区1220对应的频率都为F1，小区1210支持的网络切片为S1，且小区1220支持的网络切片也为S1。 在不区分小区的情形下，对于这样的小区(例如小区1210或小区1220)而言，该小区所支持的切片与该小区对应的频率所支持的切片是等价的。
在图12中，频率F2支持网络切片S1和网络切片S2，且区分小区。如图所示，小区1230和小区1240对应的频率都为F2，但是小区1230支持的网络切片为S1，而小区1240支持的网络切片为S1和S2。可见，在区分小区的情形下，对于这样的小区(例如小区1230或小区1240)而言，该小区所支持的切片不能等价于与该小区对应的频率所支持的切片。
应理解，图12仅是示意，不应解释为对本公开实施例的限制。为了描述的方便，下文中将情形1简称为不区分小区的情形，将情形2简称为区分小区的情形。
可理解，针对不区分小区的情形1，候选小区支持目标网络切片，那么相应地，1130中所选择的待驻留小区也支持目标网络切片。针对区分小区的情形2，虽然候选小区对应的频率支持目标网络切片，但是候选小区不一定都支持目标网络切片，那么相应地，1130中所选择的待驻留小区不一定支持(可能支持，也可能不支持)目标网络切片。因此，针对不同的情形，在1130中选择待驻留小区之后，小区重选的过程不完全相同。
针对不区分小区的情形1而言，在选择待驻留小区之后，终端设备210进一步进行小区重选的过程可以参照上述结合图10的描述，为了简洁，这里不再重复。
针对区分小区的情形2而言，在选择待驻留小区之后，终端设备210进一步进行小区重选的过程将结合图13进行描述。
图13示出了根据本公开实施例的小区重选的方法1300的另一示意流程图。图13示出的过程1300包括：
1310，终端设备210可以判断该待驻留小区是否满足重选条件。如果满足，则进行1320；否则进行1360。
示例性地，重选条件与待驻留小区对应的频率支持的目标网络切片的第二优先级有关，关于重选条件以及关于1310的具体实现方式，可以参照上面结合图10的1010的相关描述，为了简洁，这里不再重复。
1320，终端设备210可以接收来自待驻留小区的接入网设备的第三系统信息。第三系统信息包括所述待驻留小区是否支持所述目标网络切片的指示信息。
可理解，1320中的第三系统信息来自待驻留小区的接入网设备，其不同于在图2中示出的服务小区的接入网设备240。结合图2，如果所选择的待驻留小区为邻区230-1，那么第三系统信息来自邻区230-1的接入网设备(图中未示出)。如果所选择的待驻留小区为邻区230-2，那么第三系统信息来自邻区230-2的接入网设备(图中未示出)。
在一些示例中，第三系统信息可以为SIB1或SIB2，或者也可以为其他系统信息，本公开对此不限定。
1330，终端设备210基于第三系统信息判断待驻留小区是否支持目标网络切片。如果支持，则进行1340，否则进行1360。
示例性地，第三系统信息可以包括该待驻留小区所支持的网络切片的标识，从而终端设备210可以获知该待驻留小区是否支持目标网络切片。
1340，终端设备210可以基于第三系统信息判断该待驻留小区是否可以正常驻留。如果确定无法驻留，则进行1360；否则进行1350。
示例性地，第三系统信息还可以包括该待驻留小区是否被禁止(barred)，是否被保留 (reserved)，接入等级等。
具体地，如果确定待驻留小区可以正常驻留，则进行1350，否则进行1360。举例来说，如果第三系统信息指示该待驻留小区未被禁止且未被保留，则可以确定该待驻留小区可以正常驻留。
具体地，如果确定待驻留小区不能正常驻留(即无法驻留)，则进行1360，否则进行1350。举例来说，如果第三系统信息包含“该待驻留小区被禁止”或“该待驻留小区被保留”的指示，则可以确定该待驻留小区无法驻留。
1350，终端设备210可以重选到该待驻留小区，从而完成小区重选。
1360，终端设备210可以重新选择待驻留小区。在此之后，可以从1310开始重新执行判断，直到完成小区重选。
示例性地，1360中重新选择待驻留小区的过程可以包括：将不满足重选条件的待驻留小区从候选小区中删除，重新执行1130。或者可以理解为，将不满足重选条件的待驻留小区从邻区中删除以不再将该无法驻留的小区作为邻区，然后再从更新后的邻区中选择待驻留小区。由于重新选择待驻留小区的过程与上述1130类似，因此本公开中不再赘述。
如此，可以在第三系统信息中包括是否支持网络切片的指示信息，能够避免终端设备210驻留到不支持目标网络切片的候选小区中，确保了驻留之后的业务能够正常进行，降低了访问时延，提高了终端设备的服务体验。
通过本公开的实施例，终端设备基于目标网络切片来确定候选小区，从对应的频率支持目标网络切片的候选小区中选择待驻留小区，而不是直接将所有的邻区作为候选小区，一方面可以缩小候选小区的范围，使确定待驻留小区更加高效；另一方面由于候选小区对应的频率支持目标网络切片，使得小区重选过程中所确定的待驻留小区支持目标网络切片，从而能够满足终端设备处的业务需求，降低了访问时延，提高了服务体验。
图14示出了根据本公开实施例的小区重选的方法1400的另一个示意交互图。图14中涉及终端设备210和接入网设备240，其中，接入网设备240为终端设备210当前所在的服务小区的接入网设备。图14中的方法1400包括1410和1420。
在1410中，终端设备210获取网络切片的优先级信息。示例性地，接入网设备240可以将邻区对应的频率支持的网络切片的优先级信息发送给终端设备210。
具体地，终端设备210可以获取邻区对应的频率支持的网络切片的优先级信息。可理解，邻区对应的频率支持的网络切片可以不止一个，相应地，可以获取邻区对应的频率支持的一个或多个网络切片的优先级信息。
在一些实施例中，终端设备210可以接收来自接入网设备240的系统信息，该系统信息包括邻区对应的频率支持的网络切片的优先级信息(例如，第二优先级)。
在一种实现方式中，系统信息可以包括邻区对应的频率支持的网络切片(例如标识)，以及邻区对应的频率支持的网络切片的第二优先级。
在另一种实现方式中，系统信息包括邻区对应的频率支持的网络切片、邻区对应的频率支持的网络切片的第二优先级、以及邻区对应的频率支持的网络切片对应的指示信息，其中该指示信息用于指示服务小区是否支持该邻区对应的频率支持的网络切片。系统信息还包括服务小区对应的频率的第一优先级。可选地，在该实施例中，服务小区对应的频率支持的网络切片具有所述第一优先级。
可选地，系统信息还可以进一步包括所述服务小区对应的频率支持的网络切片和/或服务小区对应的频率支持的网络切片的第一优先级。
示例性地，系统信息可以包括第一系统信息和第二系统信息。可理解，第一系统信息和第二系统信息可以被承载在同一消息中发送，或可以被承载在不同消息中发送。可理解，第一系统和第二系统信息可以同时或不同时地向终端设备210发送。
在一些实施例中，第一系统信息可以包括服务小区对应的频率的优先级信息，例如第一优先级。第二系统信息可以包括邻区对应的频率支持的网络切片的标识，邻区对应的频率支持的网络切片的第二优先级，以及与邻区对应的频率支持的网络切片对应的指示信息，该指示信息用于指示服务小区是否支持“该邻区对应的频率支持的网络切片”。
在另一些实施例中，第一系统信息可以包括服务小区对应的频率支持的网络切片的标识，以及服务小区对应的频率支持的网络切片的第一优先级。第二系统信息可以包括邻区对应的频率支持的网络切片的标识，以及邻区对应的频率支持的网络切片的第二优先级。
作为一例，第一系统信息可以包括SIB1和/或SIB2。作为一例，第二系统信息可以包括SIB4和/或SIB5。
本公开实施例中，邻区对应的频率可以包括同系统异频和/或异系统频率。举例来讲，若服务小区属于NR系统，那么同系统异频可以为NR系统的不同频率(different NR frequency)，异系统频率可以为RAT间频率(inter RAT frequency)。
在另一些实施例中，在1410中，终端设备210可以基于目标网络切片获取对应的优先级信息。示例性地，终端设备210可以将要发起的业务对应的网络切片确定为目标网络切片；并基于该目标网络切片，确定支持该目标网络切片的频率。举例来讲，终端设备210可以确定可以访问该目标网络切片的频率，或者说，可以确定该目标网络切片所部署的频率。进一步终端设备210可以获取目标网络切片对于该频率的优先级。
可理解，关于系统信息可以参照上述结合图3至图13的实施例中的相关描述，为避免重复，这里不再赘述。
在1420中，终端设备210基于网络切片的优先级信息进行小区重选。示例性地，终端设备210可以基于所获取的邻区对应的频率支持的网络切片的优先级信息进行小区重选。
具体地，终端设备210有业务需要发起时，可以执行小区重选。要发起的业务可以对应于目标网络切片。可理解，由于不同的网络切片可以满足不同的服务需求，那么当需要发起的业务不同时，对应的网络切片可能是不同的。本公开实施例中，与要发起的业务对应的网络切片为目标网络切片，或者可以称为期望的切片；相应地，该业务可以称为切片业务或切片通信等。
在一种实现方式中，终端设备210可以基于邻区中候选小区对应的频率支持的目标网络切片的第二优先级进行小区重选，其中候选小区对应的频率支持目标网络切片。也就是说，对于邻区，可以仅考虑支持目标网络切片的邻区频率，不考虑不支持目标网络切片的邻区频率。
在一些实施例中，如果服务小区支持目标网络切片，终端设备210可以基于服务小区对应的频率支持的目标网络切片的第一优先级以及候选小区对应的频率支持的目标网络切片的第二优先级，进行小区重选。也就是说，在进行小区重选时，可以仅考虑支持目标网络切片的邻区频率和服务小区对应的频率(即服务频率)，不考虑不支持目标网络切片的邻区频率。
在该实施例中，可以基于服务小区对应的频率支持的目标网络切片的第一优先级以及候选小区对应的频率支持的目标网络切片的第二优先级，从服务小区和候选小区中选择待驻留小区；在待驻留小区满足重选条件的情况下，重选到该待驻留小区。
在另一些实施例中，如果服务小区不支持目标网络切片，终端设备可以基于候选小区对应的频率支持的目标网络切片的第二优先级，进行小区重选。也就是说，在进行小区重选时，可以仅考虑支持目标网络切片的邻区频率，不考虑不支持目标网络切片的邻区频率。
在该实施例中，可以基于候选小区对应的频率支持的目标网络切片的第二优先级，从候选小区中选择待驻留小区；在待驻留小区满足重选条件的情况下，重选到该待驻留小区。
在另一种实现方式中，终端设备210可以基于服务小区对应的频率支持的目标网络切片的第一优先级，邻区中候选小区对应的频率支持的目标网络切片的第二优先级，以及邻区中除候选小区之外的非候选小区对应的频率支持的目标网络切片的第二优先级进行小区重选。
在该实现方式中，邻区包括候选小区和非候选小区，其中候选小区对应的频率支持目标网络切片，非候选小区对应的频率不支持目标网络切片。在1410中能够获取候选小区对应的频率支持的目标网络切片的第二优先级，但是由于非候选小区对应的频率不支持目标网络切片，因此无法获取非候选小区对应的频率支持的目标网络切片的第二优先级。可选地，终端设备210可以将非候选小区对应的频率支持的目标网络切片的第二优先级设定为第二预设值，且该第二预设值低于候选小区对应的频率支持的目标网络切片的第二优先级。
可理解，如果非候选小区对应的频率的数量为多个，那么不同的非候选小区对应的频率可以具有相同或不相同的第二预设值，只需要低于每一个候选小区对应的频率支持的目标网络切片的第二优先级。
在该实现方式中，如果服务小区支持目标网络切片，那么可以从系统信息中获取服务小区对应的频率支持的目标网络切片的第一优先级。相反，如果服务小区不支持目标网络切片，那么无法从系统信息中获取服务小区对应的频率支持的目标网络切片的第一优先级。可选地，终端设备210可以将服务小区对应的频率支持的目标网络切片的第一优先级设定为第一预设值，且该第一预设值低于候选小区对应的频率支持的目标网络切片的第二优先级。
举例来讲，在图8的示例中，服务小区220不支持目标网络切片S2，那么可以将服务小区对应的频率支持的目标网络切片的第一优先级设定为第一预设值，例如第一预设值为0，那么可以通过“f1:{S2,P1＝0}”设定将服务小区对应的频率支持的目标网络切片的第一优先级为P1。
可理解，第一预设值与第二预设值可以相等或不相等，本公开对此不限定。
在图14的实施例中，基于第一优先级和第二优先级进行小区重选的过程，可以参照上述结合图3至图13中的相关描述，为了简洁，这里不再赘述。
在本公开实施例中，在基于邻区对应的频率支持的目标网络切片的第二优先级选择待驻留小区之后，可以进一步基于重选条件进行小区重选。示例性地，该过程可以参照上面结合图10或图13所述的实施例，为了简洁，这里不再赘述。
图15示出了根据本公开实施例的信息传输方法1500的一个示意流程图。方法300可以由接入网设备执行，如图2中的接入网设备240。图15所示的方法1500可以包括步骤1510和1520。
1510，接入网设备确定系统信息，其中该系统信息包括以下至少一项：服务小区对应的 频率支持的网络切片、服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片、或邻区对应的频率支持的网络切片的第二优先级。
1520，接入网设备发送该系统信息。
示例性地，系统信息可以包括第一系统信息和第二系统信息，其中第一系统信息包括服务小区对应的频率支持的网络切片和/或服务小区对应的频率的第一优先级，其中第二系统信息包括邻区对应的频率支持的网络切片和/或邻区对应的频率支持的网络切片的第二优先级。
在一些实施例中，系统信息可以包括：服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片、以及邻区对应的频率支持的网络切片的第二优先级。
在另一些实施例中，系统信息可以包括：服务小区对应的频率的第一优先级、邻区对应的频率支持的网络切片、以及邻区对应的频率支持的网络切片的第二优先级。可选地，系统信息还包括：与邻区对应的频率支持的网络切片对应的指示信息，指示信息用于指示服务小区是否支持邻区对应的频率支持的网络切片。
示例性地，系统信息包括网络切片，可以是包括：网络切片的标识，该网络切片的标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
示例性地，1520中，接入网设备可以通过广播的形式将系统信息发送给终端设备。
图15的信息传输方法1500涉及系统信息的传输，该系统信息可以用于终端设备的小区重选过程。可理解，关于系统信息、第一系统信息、第二系统信息等的相关描述，可以参照上面在结合图3部分的实施例，为了简洁，这里不再重复。
通过本公开的实施例，终端设备基于邻区对应的频率支持的网络切片的优先级信息来进行小区重选，充分地考虑不同网络切片的不同优先级，从而能够确保重选后的小区满足终端设备处的业务需求，降低了访问时延，提高了服务体验。
应理解，在本公开实施例中，“第一”，“第二”，“第三”等只是为了表示多个对象可能是不同的，但是同时不排除两个对象之间是相同的。“第一”，“第二”，“第三”等不应当解释为对本公开实施例的任何限制。
还应理解，本公开实施例中的方式、情况、类别以及实施例的划分仅是为了描述的方便，不应构成特别的限定，各种方式、类别、情况以及实施例中的特征在符合逻辑的情况下，可以相互结合。
还应理解，上述内容只是为了帮助本领域技术人员更好地理解本公开实施例，而不是要限制本公开实施例的范围。本领域技术人员根据上述内容，可以进行各种修改或变化或组合等。这样的修改、变化或组合后的方案也在本公开实施例的范围内。
还应理解，上述内容的描述着重于强调各个实施例之前的不同之处，相同或相似之处可以互相参考或借鉴，为了简洁，这里不再赘述。
图16示出了根据本公开实施例的通信装置1600的一个示意框图。装置1600可以被实现在终端设备210处，或者可以被实现为终端设备210中的芯片或芯片系统，本公开的范围在此方面不限制。
如图16所示，装置1600可以包括第一确定单元1610、第二确定单元1620和小区重选单元1630。第一确定单元1610可以被配置为确定目标网络切片。第二确定单元1620可以被配置为基于目标网络切片确定至少一个候选小区，候选小区对应的频率支持目标网络切片。选择单元1630可以被配置为基于至少一个候选小区进行小区重选。
在一些实施例中，装置1600还可以包括接收单元1602。
在一些实施例中，该接收单元1602可以被配置为：接收来自通信装置1600所在的服务小区的接入网设备的第一系统信息，其中所述第一系统信息包括所述服务小区对应的频率支持的网络切片和/或所述服务小区对应的频率支持的网络切片的第一优先级。
可选地，第一系统信息还包括邻区对应的频率支持的网络切片的第二优先级。
在一些实施例中，该接收单元1602可以被配置为：接收来自通信装置1600所在的服务小区的接入网设备的第二系统信息，其中所述第二系统信息包括邻区对应的频率支持的网络切片和/或所述邻区对应的频率支持的网络切片的第二优先级，第二系统信息还包括与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
可选地，第二系统信息还包括：服务小区对应的频率支持的网络切片的第一优先级。
在一些实施例中，第二确定单元1620可以被配置为：基于所述邻区对应的频率支持的网络切片和所述目标网络切片，从所述邻区中确定所述至少一个候选小区。
可选地，若邻区对应的频率支持的网络切片包括目标网络切片，则该邻区属于候选小区。
在一些实施例中，其中小区重选单元1630可以包括：选择子单元1632，被配置为基于所述至少一个候选小区选择待驻留小区；判断子单元1634，被配置为判断所述待驻留小区是否满足重选条件；重选子单元1636，被配置为在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在一些实施例中，其中选择子单元1632可以被配置为：在所述服务小区支持所述目标网络切片的情况下，从所述服务小区和所述至少一个候选小区中选择所述待驻留小区。
在一些实施例中，其中选择子单元1632被配置为：在所述服务小区不支持所述目标网络切片的情况下，从所述至少一个候选小区中选择所述待驻留小区。
在一些实施例中，其中选择子单元1632可以被配置为：基于以下至少一项，从所述服务小区和邻区中选择所述待驻留小区：所述目标网络切片在所述服务小区对应的频率的第一优先级、所述候选小区对应的频率支持的目标网络切片的第二优先级、或所述目标网络切片在所述邻区中除所述至少一个候选小区之外的非候选小区对应的频率支持的目标网络切片的第二优先级。
在一些实施例中，还可以包括设定单元1622，被配置为：在所述服务小区不支持所述目标网络切片的情况下，将所述目标网络切片在所述服务小区对应的频率的第一优先级设定为第一预设值，其中所述第一预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在一些实施例中，设定单元1622被配置为：针对所述邻区中除去所述至少一个候选小区之外的非候选小区，将所述目标网络切片在所述非候选小区对应的频率的第二优先级设定为第二预设值，其中所述第二预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在一些实施例中，其中重选子单元1636可以被配置为：接收来自所述待驻留小区的接入网设备的第三系统信息，所述第三系统信息包括所述待驻留小区是否支持所述目标网络切片的指示信息；在所述第三系统信息指示所述待驻留小区支持所述目标网络切片的情况下，重选到所述待驻留小区。
在一些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
示例性地，图16中的装置1600可以被实现为终端设备210，或者可以被实现为终端设备210中的芯片或芯片系统，本公开实施例对此不限定。图16中的装置1600能够用于实现上述结合图3至图15中终端设备210所述的各个过程，为了简洁，这里不再赘述。
图17示出了根据本公开实施例的通信装置1700的一个示意框图。装置1700可以被实现在终端设备210处，或者可以被实现为终端设备210中的芯片或芯片系统，本公开的范围在此方面不限制。
如图17所示，装置1700可以包括获取单元1710和小区重选单元1720。获取单元1710可以被配置为获取邻区对应的频率支持的网络切片的优先级信息。小区重选单元1720可以被配置为基于所述邻区对应的频率支持的网络切片的优先级信息进行小区重选。
在一些实施例中，其中获取单元1710可以被配置为：接收来自通信装置1700所在的服务小区的接入网设备的系统信息，所述系统信息包括邻区对应的频率支持的网络切片的第二优先级。
在一些实施例中，系统信息包括邻区对应的频率支持的网络切片的第二优先级，以及与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
在一些实施例中，系统信息包括邻区对应的频率支持的网络切片、邻区对应的频率支持的网络切片的第二优先级、以及与邻区对应的频率支持的网络切片对应的指示信息，其中该指示信息用于指示服务小区是否支持所述邻区对应的频率支持的网络切片。系统信息还包括服务小区对应的频率的第一优先级。可选地，在该实施例中，服务小区对应的频率支持的网络切片具有所述第一优先级。
在另一些实施例中，系统信息还包括服务小区对应的频率支持的网络切片、以及服务小区对应的频率支持的网络切片的第一优先级。
在一些实施例中，其中通信装置1700有业务需要发起，所述业务对应于目标网络切片，则小区重选单元1720可以被配置为：基于所述邻区中候选小区对应的频率支持的目标网络切片的第二优先级进行小区重选，其中所述候选小区对应的频率支持所述目标网络切片。
在一些实施例中，在所述服务小区支持所述目标网络切片的情况下，小区重选单元1720可以被配置为：基于所述服务小区对应的频率支持的目标网络切片的第一优先级以及所述候选小区对应的频率支持的目标网络切片的第二优先级，从所述服务小区和所述候选小区中选择待驻留小区；在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在一些实施例中，在所述服务小区不支持所述目标网络切片的情况下，所述小区重选单元1720可以被配置为：基于所述候选小区对应的频率支持的目标网络切片的第二优先级，从所述候选小区中选择待驻留小区；在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
在一些实施例中，小区重选单元1720被配置为：基于以下至少一项，从服务小区和邻区中选择所述待驻留小区：所述目标网络切片在所述服务小区对应的频率的第一优先级，所述邻区中候选小区对应的频率支持的目标网络切片的第二优先级，或所述目标网络切片在所述邻区中除所述候选小区之外的非候选小区对应的频率的第二优先级进行小区重选。
在一些实施例中，还包括设定单元1712，被配置为：在所述服务小区不支持所述目标网络切片的情况下，将所述目标网络切片在所述服务小区对应的频率的第一优先级设定为第一预设值，其中所述第一预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在一些实施例中，设定单元1712被配置为：针对所述邻区中除去所述候选小区之外的非候选小区，将所述目标网络切片在所述非候选小区对应的频率的第二优先级设定为第二预设值，其中所述第二预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
在一些实施例中，其中小区重选单元1720可以被配置为：接收来自所述待驻留小区的接入网设备的第三系统信息，所述第三系统信息包括所述待驻留小区是否支持所述目标网络切片的指示信息；在所述第三系统信息指示所述待驻留小区支持所述目标网络切片的情况下，重选到所述待驻留小区。
在一些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
示例性地，图17中的装置1700可以被实现为终端设备210，或者可以被实现为终端设备210中的芯片或芯片系统，本公开实施例对此不限定。图17中的装置1700能够用于实现上述结合图3至图15中终端设备210所述的各个过程，为了简洁，这里不再赘述。
图18示出了根据本公开实施例的通信装置1800的一个示意框图。装置1800可以被实现在接入网设备240处，或者可以被实现为接入网设备240中的芯片或芯片系统，本公开的范围在此方面不限制。
如图18所示，装置1800可以包括确定单元1810和发送单元1820。确定单元1810被配置为确定系统信息，发送单元1820被配置为发送该系统信息。该系统信息包括以下至少一项：服务小区对应的频率支持的网络切片、服务小区对应的频率支持的网络切片的第一优先级、邻区对应的频率支持的网络切片、或所述邻区对应的频率支持的网络切片的第二优先级。
可选地，系统信息可以包括第一系统信息和第二系统信息，其中所述第一系统信息包括服务小区对应的频率支持的网络切片和/或所述服务小区对应的频率的第一优先级，其中所述第二系统信息包括邻区对应的频率支持的网络切片和/或所述邻区对应的频率支持的网络切片的第二优先级。
可选地，发送单元1820可以包括第一发送单元1822和第二发送单元1824，其中第一发送单元1822被配置为发送第一系统信息，第二发送单元1824被配置为发送第二系统信息。
在一些实施例中，其中所述系统信息还包括：与所述邻区对应的频率支持的网络切片对应的指示信息，所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
在一些实施例中，其中所述网络切片具有标识，所述标识包括以下至少一项：S-NSSAI，切片ID，切片组ID，访问类别，或访问身份。
示例性地，图18中的装置1800可以被实现为接入网设备240，或者可以被实现为接入网设备240中的芯片或芯片系统，本公开实施例对此不限定。图18中的装置1800能够用于实现上述结合图3至图15中接入网设备240所述的各个过程，为了简洁，这里不再赘述。
图19示出了根据本公开实施例的示例装置1900的简化框图。装置1900可以用于实现如图2所示的终端设备210和接入网设备240。如图所示，装置1900包括一个或多个处理器1910， 耦合到处理器1910的一个或多个存储器1920，以及耦合到处理器1910的通信模块1940。
通信模块1940可以用于双向通信。通信模块1940可以具有用于通信的至少一个通信接口。通信接口可以包括与其他设备通信所必需的任何接口。
处理器1910可以是适合于本地技术网络的任何类型，并且可以包括但不限于以下至少一种：通用计算机、专用计算机、微控制器、数字信号处理器(Digital Signal Processor，DSP)、或基于控制器的多核控制器架构中的一个或多个。装置1900可以具有多个处理器，例如专用集成电路芯片，其在时间上从属于与主处理器同步的时钟。
存储器1920可以包括一个或多个非易失性存储器和一个或多个易失性存储器。非易失性存储器的示例包括但不限于以下至少一种：只读存储器(Read-Only Memory，ROM)1924、可擦除可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)、闪存、硬盘、光盘(Compact Disc，CD)、数字视频盘(Digital Versatile Disc，DVD)或其他磁存储和/或光存储。易失性存储器的示例包括但不限于以下至少一种：随机存取存储器(Random Access Memory，RAM)1922、或不会在断电持续时间中持续的其他易失性存储器。
计算机程序1930包括由关联处理器1910执行的计算机可执行指令。程序1930可以存储在ROM 1924中。处理器1910可以通过将程序1930加载到RAM 1922中来执行任何合适的动作和处理。
可以借助于程序1930来实现本公开的实施例，使得装置1900可以执行如参考图3至图15所讨论的任何过程。本公开的实施例还可以通过硬件或通过软件和硬件的组合来实现。
在一些实施例中，程序1930可以有形地包含在计算机可读介质中，该计算机可读介质可以包括在装置1900中(诸如在存储器1920中)或者可以由装置1900访问的其他存储设备。可以将程序1930从计算机可读介质加载到RAM 1922以供执行。计算机可读介质可以包括任何类型的有形非易失性存储器，例如ROM、EPROM、闪存、硬盘、CD、DVD等。
在一些实施例中，装置1900中的通信模块1940可以被实现为发送器和接收器(或收发器)，其可以被配置为发送/接收系统信息，如第一系统信息、第二系统信息、第三系统信息等。另外，装置1900还可以进一步包括调度器、控制器、射频/天线中的一个或多个，本公开不再详细阐述。
示例性地，图19中的装置1900可以被实现为终端设备210或接入网设备240，或者可以被实现为终端设备210中的芯片或芯片系统，或者可以被实现为接入网设备240中的芯片或芯片系统，本公开实施例对此不限定。
本公开实施例还提供了一种芯片，该芯片可以包括输入接口、输出接口和处理电路。本公开实施例中，可以由输入接口和输出接口完成上述信令或数据的交互，由处理电路完成信令或数据信息的生成以及处理。
本公开实施例还提供了一种芯片系统，包括处理器，用于支持终端设备210或接入网设备240以实现上述任一实施例中所涉及的功能。在一种可能的设计中，芯片系统还可以包括存储器，用于存储必要的程序指令和数据，当处理器运行该程序指令时，使得安装该芯片系统的设备实现上述任一实施例中所涉及的方法。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
本公开实施例还提供了一种处理器，用于与存储器耦合，存储器存储有指令，当处理器运行所述指令时，使得处理器执行上述任一实施例中涉及终端设备210或接入网设备240的 方法和功能。
本公开实施例还提供了一种包含指令的计算机程序产品，其在计算机上运行时，使得计算机执行上述各实施例中任一实施例中涉及终端设备210或接入网设备240的方法和功能。
本公开实施例还提供了一种计算机可读存储介质，其上存储有计算机指令，当处理器运行所述指令时，使得处理器执行上述任一实施例中涉及终端设备210或接入网设备240的方法和功能。
本公开实施例还提供一种无线通信系统，该系统包括终端设备210或接入网设备240。
通常，本公开的各种实施例可以以硬件或专用电路、软件、逻辑或其任何组合来实现。一些方面可以用硬件实现，而其他方面可以用固件或软件实现，其可以由控制器，微处理器或其他计算设备执行。虽然本公开的实施例的各个方面被示出并描述为框图，流程图或使用一些其他图示表示，但是应当理解，本文描述的框，装置、系统、技术或方法可以实现为，如非限制性示例，硬件、软件、固件、专用电路或逻辑、通用硬件或控制器或其他计算设备，或其某种组合。
本公开还提供有形地存储在非暂时性计算机可读存储介质上的至少一个计算机程序产品。该计算机程序产品包括计算机可执行指令，例如包括在程序模块中的指令，其在目标的真实或虚拟处理器上的设备中执行，以执行如上参考图3至图15的过程/方法。通常，程序模块包括执行特定任务或实现特定抽象数据类型的例程、程序、库、对象、类、组件、数据结构等。在各种实施例中，可以根据需要在程序模块之间组合或分割程序模块的功能。用于程序模块的机器可执行指令可以在本地或分布式设备内执行。在分布式设备中，程序模块可以位于本地和远程存储介质中。
用于实现本公开的方法的计算机程序代码可以用一种或多种编程语言编写。这些计算机程序代码可以提供给通用计算机、专用计算机或其他可编程的数据处理装置的处理器，使得程序代码在被计算机或其他可编程的数据处理装置执行的时候，引起在流程图和/或框图中规定的功能/操作被实施。程序代码可以完全在计算机上、部分在计算机上、作为独立的软件包、部分在计算机上且部分在远程计算机上或完全在远程计算机或服务器上执行。
在本公开的上下文中，计算机程序代码或者相关数据可以由任意适当载体承载，以使得设备、装置或者处理器能够执行上文描述的各种处理和操作。载体的示例包括信号、计算机可读介质、等等。信号的示例可以包括电、光、无线电、声音或其它形式的传播信号，诸如载波、红外信号等。
计算机可读介质可以是包含或存储用于或有关于指令执行系统、装置或设备的程序的任何有形介质。计算机可读介质可以是计算机可读信号介质或计算机可读存储介质。计算机可读介质可以包括但不限于电子的、磁的、光学的、电磁的、红外的或半导体系统、装置或设备，或其任意合适的组合。计算机可读存储介质的更详细示例包括带有一根或多根导线的电气连接、便携式计算机磁盘、硬盘、随机存储存取器(RAM)、只读存储器(ROM)、可擦除可编程只读存储器(EPROM或闪存)、光存储设备、磁存储设备，或其任意合适的组合。
此外，尽管在附图中以特定顺序描述了本公开的方法的操作，但是这并非要求或者暗示必须按照该特定顺序来执行这些操作，或是必须执行全部所示的操作才能实现期望的结果。相反，流程图中描绘的步骤可以改变执行顺序。附加地或备选地，可以省略某些步骤，将多个步骤组合为一个步骤执行，和/或将一个步骤分解为多个步骤执行。还应当注意，根据本公 开的两个或更多装置的特征和功能可以在一个装置中具体化。反之，上文描述的一个装置的特征和功能可以进一步划分为由多个装置来具体化。
以上已经描述了本公开的各实现，上述说明是示例性的，并非穷尽的，并且也不限于所公开的各实现。在不偏离所说明的各实现的范围和精神的情况下，对于本技术领域的普通技术人员来说许多修改和变更都是显而易见的。本文中所用术语的选择，旨在很好地解释各实现的原理、实际应用或对市场中的技术的改进，或者使本技术领域的其他普通技术人员能理解本文公开的各个实现方式。

Claims (21)

  1. 一种小区重选的方法，其特征在于，包括：
    终端设备确定目标网络切片；
    所述终端设备基于所述目标网络切片确定至少一个候选小区，所述候选小区对应的频率支持所述目标网络切片；以及
    所述终端设备基于所述至少一个候选小区进行小区重选。
  2. 根据权利要求1所述的方法，所述方法还包括：
    所述终端设备接收来自所述终端设备所在的服务小区的接入网设备的第一系统信息，其中所述第一系统信息包括所述服务小区对应的频率支持的网络切片和/或所述服务小区对应的频率支持的网络切片的第一优先级。
  3. 根据权利要求1所述的方法，所述方法还包括：
    所述终端设备接收来自所述终端设备所在的服务小区的接入网设备的第二系统信息，其中所述第二系统信息包括邻区对应的频率支持的网络切片和/或所述邻区对应的频率支持的网络切片的第二优先级，所述第二系统信息还包括与所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
  4. 根据权利要求2所述的方法，其中所述第一系统信息还包括：邻区对应的频率支持的网络切片的第二优先级。
  5. 根据权利要求3所述的方法，其中所述第二系统信息还包括：所述服务小区对应的频率支持的网络切片的第一优先级。
  6. 根据权利要求3至5中任一项所述的方法，其中所述基于所述目标网络切片确定至少一个候选小区，包括：
    基于所述邻区对应的频率支持的网络切片和所述目标网络切片，从所述邻区中确定所述至少一个候选小区。
  7. 根据权利要求1所述的方法，其中所述终端设备基于所述至少一个候选小区进行小区重选，包括：
    所述终端设备基于所述至少一个候选小区选择待驻留小区；
    所述终端设备判断所述待驻留小区是否满足重选条件；
    在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
  8. 根据权利要求7所述的方法，其中所述终端设备基于所述至少一个候选小区选择待驻留小区包括所述终端设备基于以下至少一项，从服务小区和邻区中选择所述待驻留小区：
    所述目标网络切片在所述服务小区对应的频率的第一优先级、所述候选小区对应的频率支持目标网络切片的第二优先级、或所述目标网络切片在所述邻区中除所述至少一个候选小区之外的非候选小区对应的频率的第二优先级。
  9. 根据权利要求8所述的方法，还包括：
    在所述服务小区不支持所述目标网络切片的情况下，将所述目标网络切片在所述服务小区对应的频率的第一优先级设定为第一预设值，其中所述第一预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
  10. 根据权利要求8或9所述的方法，还包括：
    针对所述邻区中除所述至少一个候选小区之外的非候选小区，将所述目标网络切片在所述非候选小区对应的频率的第二优先级设定为第二预设值，其中所述第二预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
  11. 一种通信装置，其特征在于，包括：
    第一确定单元，被配置为确定目标网络切片；
    第二确定单元，被配置为基于所述目标网络切片确定至少一个候选小区，所述候选小区对应的频率支持所述目标网络切片；以及
    小区重选单元，被配置为基于所述至少一个候选小区进行小区重选。
  12. 根据权利要求11所述的装置，还包括接收单元，被配置为：
    接收来自所述通信装置所在的服务小区的接入网设备的第一系统信息，其中所述第一系统信息包括所述服务小区对应的频率支持的网络切片和/或所述服务小区对应的频率支持的网络切片的第一优先级。
  13. 根据权利要求11所述的装置，还包括接收单元，被配置为：
    接收来自所述通信装置所在的服务小区的接入网设备的第二系统信息，其中所述第二系统信息包括邻区对应的频率支持的网络切片和/或所述邻区对应的频率支持的网络切片的第二优先级，所述第二系统信息还包括所述邻区对应的频率支持的网络切片对应的指示信息，其中所述指示信息用于指示所述服务小区是否支持所述邻区对应的频率支持的网络切片。
  14. 根据权利要求12所述的装置，其中所述第一系统信息还包括：邻区对应的频率支持的网络切片的第二优先级。
  15. 根据权利要求13所述的装置，其中所述第二系统信息还包括：所述服务小区对应的频率支持的网络切片的第一优先级。
  16. 根据权利要求13至15中任一项所述的装置，其中所述第二确定单元，被配置为：
    基于所述邻区对应的频率支持的网络切片和所述目标网络切片，从所述邻区中确定所述至少一个候选小区。
  17. 根据权利要求11所述的装置，其中所述小区重选单元包括：
    选择子单元，被配置为基于所述至少一个候选小区选择待驻留小区；
    判断子单元，被配置为判断所述待驻留小区是否满足重选条件；
    重选子单元，被配置为在所述待驻留小区满足重选条件的情况下，重选到所述待驻留小区。
  18. 根据权利要求17所述的装置，其中所述选择子单元被配置为：基于以下至少一项，从服务小区和邻区中选择所述待驻留小区：
    所述目标网络切片在所述服务小区对应的频率的第一优先级、所述候选小区对应的频率支持的目标网络切片的第二优先级、或所述目标网络切片在所述邻区中除所述至少一个候选小区之外的非候选小区对应的频率支持的目标网络切片的第二优先级。
  19. 根据权利要求18所述的装置，还包括设定单元，被配置为：
    在所述服务小区不支持所述目标网络切片的情况下，将所述目标网络切片在所述服务小区对应的频率的第一优先级设定为第一预设值，其中所述第一预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
  20. 根据权利要求18或19所述的装置，还包括设定单元，被配置为：
    针对所述邻区中除所述至少一个候选小区之外的非候选小区，将所述目标网络切片在所述非候选小区对应的频率的第二优先级设定为第二预设值，其中所述第二预设值低于所述候选小区对应的频率支持的目标网络切片的第二优先级。
  21. 一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现根据权利要求1至10中任一项所述的方法。
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CN115278719A (zh) 2022-11-01
US20240064587A1 (en) 2024-02-22
EP4322594A4 (en) 2024-09-04

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