WO2020253706A1 - 切换方法、指示方法、终端及网络侧设备 - Google Patents

切换方法、指示方法、终端及网络侧设备 Download PDF

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Publication number
WO2020253706A1
WO2020253706A1 PCT/CN2020/096500 CN2020096500W WO2020253706A1 WO 2020253706 A1 WO2020253706 A1 WO 2020253706A1 CN 2020096500 W CN2020096500 W CN 2020096500W WO 2020253706 A1 WO2020253706 A1 WO 2020253706A1
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Prior art keywords
indication information
conditional
terminal
switching
handover
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Ceased
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PCT/CN2020/096500
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English (en)
French (fr)
Inventor
谢芳
刘光毅
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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Application filed by China Mobile Communications Group Co Ltd, Research Institute of China Mobile Communication Co Ltd filed Critical China Mobile Communications Group Co Ltd
Priority to US17/610,469 priority Critical patent/US12101674B2/en
Priority to AU2020296735A priority patent/AU2020296735B2/en
Priority to CA3141281A priority patent/CA3141281C/en
Priority to JP2021568167A priority patent/JP7223172B2/ja
Priority to SG11202112617XA priority patent/SG11202112617XA/en
Priority to EP20827127.0A priority patent/EP3955639B1/en
Publication of WO2020253706A1 publication Critical patent/WO2020253706A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • 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
    • H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/249—Reselection being triggered by specific parameters according to timing information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H04W36/362—Conditional handover

Definitions

  • the embodiments of the present disclosure relate to the field of communication technologies, and in particular, to a switching method, an indication method, a terminal, and a network side device.
  • the terminal when a terminal in a communication state moves from one cell to another, or the link quality of the terminal's serving cell deteriorates, in order to ensure the continuity of communication, the terminal can perform cell handover.
  • the network side device determines whether the terminal has a cell handover requirement based on the measurement report reported by the terminal. When determining that the terminal has a cell handover requirement, the network side device sends a handover command to the terminal to instruct the terminal to perform cell handover. In the related technology, if the handover fails, the terminal will perform a radio resource control (Radio Resource Control, RRC) reestablishment process, and the handover failure rate is relatively high.
  • RRC Radio Resource Control
  • the embodiments of the present disclosure provide a handover method, an instruction method, a terminal, and a network side device to solve the problem of a high handover failure rate caused by the terminal performing the RRC reconstruction process after the handover command fails to execute in the related art.
  • embodiments of the present disclosure provide a handover method, which is applied to a terminal, and the handover method includes:
  • conditional handover procedure is executed.
  • embodiments of the present disclosure provide an indication method, which is applied to a network side device, and the indication method includes:
  • an embodiment of the present disclosure also provides a terminal, the terminal including:
  • conditional handover procedure is executed.
  • the embodiments of the present disclosure also provide a network side device, the network side device including:
  • the transceiver is configured to send first instruction information to the terminal, where the first instruction information is used to instruct the terminal to execute according to the first instruction information when the switching fails to execute the switching command and the conditional switching is configured Conditional switching process.
  • the embodiments of the present disclosure also provide a terminal, including a second processor, a first memory, and a first computer program stored on the first memory and running on the second processor, so The steps of the switching method described above are implemented when the first computer program is executed by the second processor.
  • embodiments of the present disclosure also provide a network side device, including a third processor, a second memory, and a second computer program stored on the second memory and capable of running on the third processor When the second computer program is executed by the third processor, the steps of the instruction method described above are implemented.
  • the embodiments of the present disclosure also provide a computer-readable storage medium having a third computer program stored on the computer-readable storage medium, and when the third computer program is executed by a fourth processor, the above The steps of the switching method, or the steps of the instruction method as described above.
  • conditional handover when the terminal executes the handover command sent by the network device and the handover fails, if conditional handover is configured, the conditional handover process can be continued, which can increase the probability of the terminal accessing the target cell, and thus Can reduce the handover failure rate.
  • FIG. 1 is a structural diagram of a network system applicable to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of condition switching provided by an embodiment of the present disclosure
  • FIG. 3 is a flowchart of a handover method provided by an embodiment of the present disclosure
  • FIG. 4 is a flowchart of an indication method provided by an embodiment of the present disclosure.
  • FIG. 5 is one of the structural diagrams of a terminal provided by an embodiment of the present disclosure.
  • FIG. 6 is one of the structural diagrams of the network side device provided by the embodiment of the present disclosure.
  • FIG. 7 is the second structural diagram of a terminal provided by an embodiment of the present disclosure.
  • FIG. 8 is the second structural diagram of the network side device provided by the embodiment of the present disclosure.
  • FIG. 1 is a structural diagram of a network system applicable to an embodiment of the present disclosure. As shown in FIG. 1, it includes a terminal 11 and a network side device 12, where the terminal 11 and the network side device 12 can To communicate.
  • the terminal 11 may also be referred to as User Equipment (UE).
  • UE User Equipment
  • the terminal 11 may be a mobile phone, a tablet (Personal Computer), a laptop (Laptop Computer), Personal digital assistant (Personal Digital Assistant, PDA), mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted equipment, etc.
  • the network side device 12 may be a base station, a relay, an access point, or other network elements, etc., where the base station may be the source base station of the terminal or the target base station of the terminal.
  • a handover (HO) command carries a threshold for triggering handover, which can also carry the random access resources used by the UE in the target cell. Once the handover threshold is met, the UE can Initiate a random access procedure to the target base station.
  • FIG. 2 is a flow chart of conditional switching provided by an embodiment of the present disclosure. As shown in Figure 2, the conditional switching process may include the following steps:
  • Step 201 The terminal sends a measurement report (Measurement Report) to a source base station (Source eNB).
  • Measurement Report a measurement report
  • Source eNB a source base station
  • Step 202 The source base station executes a Condition Handover (CHO) decision (Decision).
  • CHO Condition Handover
  • Step 203 In the case of deciding to configure condition switching, the source base station sends a CHO request to the target base station (Target eNB) and/or other candidate base stations.
  • Target eNB target base station
  • Step 204 After receiving the CHO request, the target base station and/or other candidate base stations execute a CHO admission control (Admission Control) decision.
  • CHO admission control Admission Control
  • Step 205 When CHO is allowed, the target base station and/or other candidate base stations send a CHO request acknowledgement (ACK) message to the source base station.
  • ACK CHO request acknowledgement
  • the CHO request confirmation message may include (Include) RRC configuration (Configuration, Config), etc.
  • Step 206 The source base station sends an RRC Reconfiguration (RRC Reconfiguration) message carrying the conditional switching configuration to the terminal.
  • RRC Reconfiguration RRC Reconfiguration
  • Step 207 If the trigger condition is satisfied, the terminal triggers (Trigger) condition switching.
  • Step 208 The terminal and the target base station perform synchronization (Synchronization), random access (Random Access), RRC connection establishment (Connection Setup) and other processes.
  • Step 209 The target base station sends a CHO Complete (CHO Complete) message to the source base station.
  • the UE will immediately execute the ordinary switching command if it receives a normal switching command sent by the network-side device while waiting for the conditional switching trigger.
  • FIG. 3 is a flowchart of a handover method provided by an embodiment of the present disclosure.
  • the switching method of the embodiment of the present disclosure can be applied to a terminal.
  • the handover method may include the following steps:
  • Step 301 Execute the handover command sent by the network side device.
  • the terminal performs the switching operation after receiving the switching command sent by the network side device.
  • the terminal may fail to handover or succeed in handover.
  • the terminal may fail to handover. In the case that the handover fails, step 302 may be executed.
  • the handover command may be a normal handover command or an immediate handover command sent by the network side device, but it is not limited to this, and it can also be an instruction or an instruction sent by another network side device to instruct the terminal to perform a handover operation. command.
  • Step 302 When the handover fails and the terminal is configured with conditional handover, execute the conditional handover process.
  • step 302 includes: when the handover fails, the terminal performs cell selection, and if the result of the cell selection is the target cell of the conditional handover, and according to the network side configuration, when the handover fails, After the terminal is allowed to execute the conditional switching process, the conditional switching process is executed.
  • the terminal can perform cell handover through the conditional handover process again, thereby increasing the probability of the terminal accessing the target cell, and thus Reduce the chance of handover failure.
  • conditional switching of the terminal may be configured by network side equipment such as the source base station, the target base station, or other network elements.
  • the network-side device can configure conditions for the terminal to perform conditional handover.
  • the conditions can include but are not limited to at least one of the following: a list of candidate cells; handover conditions for each candidate cell, such as the threshold of the A3 event.
  • the network-side device that configures conditional switching for the terminal may not be the same network-side device that sends the switching command to the terminal.
  • the source base station sends a switching command to the terminal
  • the target base station configures the conditional switching for the terminal.
  • the network-side device that configures conditional switching for the terminal and the network-side device that sends the switching command to the terminal may also be the same network-side device, which can be specifically determined according to actual needs, which is not limited in the embodiments of the present disclosure.
  • conditional handover when the terminal executes the handover command sent by the network device and the handover fails, if conditional handover is configured, the conditional handover process can be continued, thereby increasing the probability of the terminal accessing the target cell. In turn, the handover failure rate can be reduced.
  • the UE may also perform cell selection first, and if the selected target cell is a target cell for conditional handover, the conditional handover procedure is performed.
  • the network-side device can configure conditions for the terminal to perform conditional switching. Therefore, in an implementation manner, when the switching fails and conditional switching is configured, the terminal can execute the conditional switching process according to the above conditions.
  • the execution condition switching process includes:
  • the conditional switching process is executed.
  • the first indication information may include at least one of the following information:
  • the second indication information is used to instruct the terminal to switch to the conditional switching process when the switching fails to execute the switching command and the conditional switching is configured;
  • the third indication information is used to indicate the timing information of the timer. Before the timer expires, any trigger condition is met, and the terminal executes the conditional handover procedure corresponding to the met trigger condition; otherwise, executes the cell reconstruction procedure;
  • the fourth indication information is used to indicate condition switching parameters
  • the fifth indication information is used to indicate the target cell for conditional handover
  • the sixth indication information is used to indicate the maximum number of conditional handovers. Any trigger condition is met before the number of conditional handovers reaches the maximum number.
  • the terminal executes the conditional handover procedure corresponding to the met trigger condition; otherwise, executes the cell reconstruction procedure;
  • the seventh indication information is used to indicate the maximum number of judgments for judging whether the trigger condition for conditional switching is met, any trigger condition is met before the number of judgments reaches the maximum number of judgments, and the terminal executes the condition switching process corresponding to the met trigger condition; otherwise Perform the cell reconstruction process.
  • the timing information of the timer may include at least one of the following: the timing duration of the timer; and the start condition of the timer.
  • the timing duration of the timer can be set by default or adjusted independently by the terminal user.
  • the start condition of the timer may be: the terminal fails to execute the switching command, and conditional switching is configured.
  • step 302 includes: performing cell selection in the case of handover failure; if the result of the cell selection is the target cell of the conditional handover , Switch to and execute the condition switching process according to the second instruction information.
  • the timing duration of the timer may be related to at least one of the moving speed of the terminal and the operating frequency of the network where the terminal is located.
  • the timing duration of the timer may be negatively related to the movement speed of the terminal, that is, the faster the movement speed of the terminal, the shorter the timing duration of the timer. In this way, the faster the terminal moves, the shorter the timer duration, and the shorter the interval between the terminal handover failure and the execution of the conditional handover procedure, which can improve the reliability of handover.
  • the timing duration of the timer can also be negatively related to the operating frequency of the network where the terminal is located. For example, the timing duration of the timer when the terminal is on a high-frequency network (such as 5G network) is compared to the timing duration of the terminal when the terminal is on a low-frequency network (such as 4G network). Shorter. In this way, the higher the operating frequency of the network where the terminal is located, the shorter the timer duration, and the shorter the interval between the terminal's handover failure and the execution of the conditional handover procedure, thereby improving the reliability of handover.
  • a high-frequency network such as 5G network
  • 4G network such as 4G network
  • the maximum number of conditional switching may be related to at least one of the moving speed of the terminal and the operating frequency of the network where the terminal is located.
  • the maximum number of conditional switching may be inversely related to the moving speed of the terminal, that is, the faster the moving speed of the terminal, the less the maximum number of conditional switching.
  • the maximum number of conditional switching can be negatively related to the operating frequency of the network where the terminal is located. In this way, the faster the terminal moves, the higher the operating frequency of the network where the terminal is located, the fewer the maximum number of conditional switching, and the fewer the number of times the terminal executes the conditional switching process after the switching fails, thereby improving the reliability of switching.
  • the maximum number of judgments may be related to at least one of the moving speed of the terminal and the operating frequency of the network where the terminal is located. Specifically, the maximum number of judgments may be negatively correlated with the moving speed of the terminal, that is, the faster the moving speed of the terminal, the smaller the maximum number of judgments. The maximum number of judgments can be negatively correlated with the operating frequency of the network where the terminal is located. In this way, the faster the terminal moves, the higher the operating frequency of the network where the terminal is located, the fewer the maximum number of judgments, and the fewer times the terminal performs the conditional switching process after the handover fails, thereby improving the reliability of handover.
  • the network-side device may configure conditional switching for multiple target cells, and the conditional switching trigger condition of each target cell may be different. Therefore, in the case that any trigger condition is met, the terminal executes the condition switching process corresponding to the met trigger condition. For example, suppose the network side device configures the conditional handover of target cell 1 and target cell 2, the trigger condition of the conditional handover of target cell 1 is trigger condition a, and the trigger condition of the conditional handover of target cell 2 is trigger condition b. If the trigger condition b is satisfied before the timer expires, the terminal can perform the conditional switching procedure in the target cell 2.
  • conditional switching parameters can include:
  • New condition switching judgment threshold such as the new threshold of A3 event.
  • the adjustment amount of the conditional judgment threshold for example, the threshold of the A3 event is lowered by 20%.
  • the target cell indicated by the fifth indication information may be determined by the network side device according to the measurement result reported by the terminal.
  • the first indication information may be transmitted through the handover command or the RRC reconfiguration message, but it is not limited to this.
  • the processing strategy agreed in advance by the agreement may include at least one of the following processing strategies:
  • the first processing strategy when the terminal fails to execute the switching command and is configured with conditional switching, it switches to the conditional switching process;
  • the second processing strategy when the terminal fails to execute the switching command and the conditional switching is configured, update the conditional switching parameters, and execute the conditional switching process according to the conditional switching parameters;
  • the third processing strategy when the terminal fails to execute the switching command and the switch is configured with conditional switching, it starts a timer, and if any trigger condition is met before the timer expires, the condition corresponding to the met trigger condition is executed Handover process, otherwise execute the cell reconstruction process.
  • the terminal may execute the conditional switching process according to at least one of the first instruction information sent by the network side device and the processing strategy pre-agreed by the protocol.
  • the terminal may perform the condition switching process according to the first instruction information, perform the condition switching process according to the processing strategy agreed in advance by the agreement, and perform the condition switching process according to the first instruction information and the processing strategy agreed in advance by the agreement.
  • Case 1 The conditional switching process is executed according to the first instruction information sent by the network side device.
  • the execution of the conditional switching process according to at least one of the first instruction information sent by the network side device and the processing strategy pre-agreed by the protocol includes at least one of the following:
  • the timer is started, and if any trigger condition of the timer is satisfied before the timing ends, the Trigger the conditional handover procedure corresponding to the condition, otherwise execute the cell re-establishment procedure;
  • the received first indication information sent by the network side device includes the fourth indication information, execute a condition switching process by using the condition switching parameter;
  • the received first indication information sent by the network side device includes the fifth indication information, perform a conditional handover procedure in the target cell.
  • the second indication information may include the first field or the second field.
  • the first field is used to indicate the terminal to switch to the conditional switching process when the switching fails and conditional switching is configured; the second field It is used to instruct the terminal to switch to the cell reconstruction process when the handover fails and conditional handover is configured.
  • the terminal may perform the conditional switching process when the switching fails and the conditional switching is configured; after receiving the first field including the second field
  • the terminal can perform the cell re-establishment process when the handover fails and the conditional handover is configured.
  • the first indication information received by the terminal does not include the second indication information, but includes other indication information other than the second indication information, the first indication information implicitly indicates that the terminal
  • the conditional switching process may be executed when the switching fails and the conditional switching is configured, so that the terminal can execute the conditional switching process according to the first indication information.
  • the terminal may combine the indication information included in the first indication information to perform a conditional switching process.
  • the terminal can adjust the condition judgment threshold for each judgment according to the above adjustment amount in a decreasing manner.
  • the condition judgment threshold of the first judgment can be one adjustment larger than the condition judgment threshold of the second judgment. In this way, the terminal can more easily meet the trigger condition of the condition switching, and then execute the condition switching process corresponding to the trigger condition.
  • the terminal can perform the corresponding trigger condition corresponding to the target cell indicated by the fifth indication information when any trigger condition is satisfied before the timer expires.
  • the conditional switching process If the first indication information includes the third indication information and the fifth indication information, the terminal can perform the corresponding trigger condition corresponding to the target cell indicated by the fifth indication information when any trigger condition is satisfied before the timer expires. The conditional switching process.
  • the terminal in case 1, in the case where the terminal does not receive the first indication information, even if the terminal handover fails and conditional handover is configured, the terminal will perform the cell reconstruction process.
  • Case 2 The conditional switching process is executed according to the processing strategy agreed in advance in the agreement.
  • the execution of the conditional switching procedure according to at least one of the first instruction information sent by the network side device and the processing strategy pre-agreed by the protocol includes at least one of the following:
  • the condition switching procedure is executed.
  • the processing strategy includes the above-mentioned second processing strategy, update the condition switching parameter, and execute the condition switching process according to the updated adjustment;
  • the timer is started, and when it is determined that the trigger condition is satisfied before the timer expires, if any trigger condition is satisfied before the timer expires , Execute the conditional handover procedure corresponding to the met trigger condition, otherwise execute the cell reconstruction procedure.
  • the processing strategy implicitly indicates that the terminal may fail in handover, And when conditional switching is configured, the conditional switching process is executed, so that the terminal can execute the conditional switching process according to the processing strategy.
  • Case 3 The condition switching process is executed according to the first instruction information and the processing strategy pre-agreed in the agreement.
  • the terminal can perform the condition switching procedure in combination with the first indication information and the processing strategy pre-arranged by the protocol.
  • the processing strategy may include: when the terminal fails and is configured with conditional handover, it executes the conditional handover procedure, and the target cell that executes the conditional handover procedure, the timing duration of the timer, or the decision threshold of conditional handover can be determined by the network. Side device control, which can further reduce the handover failure rate.
  • Fig. 4 is a flowchart of an indication method provided by an embodiment of the present disclosure.
  • the indication method in the embodiment of the present disclosure can be applied to network side equipment.
  • the instruction method may include the following steps:
  • Step 401 Send first instruction information to the terminal, where the first instruction information is used to instruct the terminal to perform conditional switching according to the first instruction information when the switching fails to execute the switching command and the conditional switching is configured. Process.
  • the first indication information is transmitted through the handover command or the RRC reconfiguration message.
  • the first indication information includes at least one of the following information:
  • the second indication information is used to instruct the terminal to switch to the conditional switching process when the switching fails to execute the switching command and the conditional switching is configured;
  • the third indication information is used to indicate the timing information of the timer. Any trigger condition is met before the timer expires, and the terminal executes the conditional handover procedure corresponding to the met trigger condition; otherwise, executes the cell reconstruction procedure;
  • the fourth indication information is used to indicate condition switching parameters
  • the fifth indication information is used to indicate the target cell for conditional handover.
  • this embodiment is an implementation manner of a network side device corresponding to the foregoing method embodiment. Therefore, reference may be made to the relevant description in the foregoing method embodiment, and the same beneficial effects can be achieved. In order to avoid repeating the description, it will not be repeated here.
  • the network side device sends the first instruction information to the terminal, so that the terminal can execute the conditional switching process according to the first instruction information when the switching fails to execute the switching command and the conditional switching is configured Therefore, the probability of the terminal accessing the target cell can be increased, and the handover failure rate can be reduced.
  • Step 1 The network side equipment, such as the source base station or the target base station or other network elements, configure the conditions for the UE to perform conditional handover, which may include a list of candidate cells and/or corresponding handover conditions, such as the threshold of the A3 event;
  • Step 2 The network side device, such as the source base station or the target base station or other network elements, sends a normal handover command to the UE.
  • Step 3 The network side equipment, such as the source base station or target base station or other network elements, sends one or more of the following information to the UE:
  • the first indication information which indicates that the UE can fall back to or can perform conditional handover after the normal handover fails
  • Timer The speed of the terminal is fast, and the timing duration of the timer is shorter, otherwise it is longer, the network where the terminal is located is high frequency, and the timing duration of the timer is shorter;
  • the threshold adjustment parameter for conditional switching which may be an absolute adjustment value or a relative adjustment value; and/or, move in an appropriate direction;
  • the target cell can be determined based on the measurement report.
  • the above-mentioned information can be carried by ordinary handover commands, and can also be carried by other information, such as RRC reconfiguration information.
  • Step 4 The UE performs a normal handover and fails
  • Step 5 The UE judges based on the information in the above step 3, if it carries the first indication information, which indicates that the UE can perform conditional handover, it judges whether the conditional handover conditions are met based on the results of cell selection and measurement;
  • the terminal performs the conditional switching judgment after the parameter adjustment ;
  • conditional handover If there is a target cell that meets the conditional handover conditions, the conditional handover is performed;
  • the embodiment of the present disclosure allows the terminal to continue to perform the conditional handover method after the normal handover fails, so that the terminal can access the target cell as soon as possible and reduce the handover failure rate.
  • FIG. 5 is one of the structural diagrams of a terminal provided by an embodiment of the present disclosure. As shown in FIG. 5, the terminal 500 includes:
  • the first processor 501 is used for:
  • conditional handover procedure is executed.
  • the first processor 501 is specifically configured to:
  • the conditional switching process is executed.
  • the first indication information is transmitted through the handover command or a radio resource control RRC reconfiguration message.
  • the first indication information includes at least one of the following information:
  • the second indication information is used to instruct the terminal to switch to the conditional switching process when the switching fails to execute the switching command and the conditional switching is configured;
  • the third indication information is used to indicate the timing information of the timer. Any trigger condition is met before the timer expires, and the terminal executes the conditional handover procedure corresponding to the met trigger condition; otherwise, executes the cell reconstruction procedure;
  • the fourth indication information is used to indicate condition switching parameters
  • the fifth indication information is used to indicate the target cell for conditional handover.
  • the first processor 501 is specifically used for at least one of the following:
  • the timer is started, and if any trigger condition of the timer is satisfied before the timing ends, the Trigger the conditional handover procedure corresponding to the condition, otherwise execute the cell re-establishment procedure;
  • the received first indication information sent by the network side device includes the fourth indication information, execute a condition switching process by using the condition switching parameter;
  • the received first indication information sent by the network side device includes the fifth indication information, perform a conditional handover procedure in the target cell.
  • the terminal 500 can implement various processes that can be implemented by the terminal in the method embodiments of the present disclosure and achieve the same beneficial effects. To avoid repetition, details are not described herein again.
  • the network side device 600 includes:
  • the transceiver 601 is configured to send first indication information to the terminal, where the first indication information is used to instruct the terminal to execute the switching command and the switching fails and conditional switching is configured, according to the first indication information Perform the conditional switching process.
  • the first indication information is transmitted through the handover command or the RRC reconfiguration message.
  • the first indication information includes at least one of the following information:
  • the second indication information is used to instruct the terminal to switch to the conditional switching process when the switching fails to execute the switching command and the conditional switching is configured;
  • the third indication information is used to indicate the timing information of the timer. Any trigger condition is met before the timer expires, and the terminal executes the conditional handover procedure corresponding to the met trigger condition; otherwise, executes the cell reconstruction procedure;
  • the fourth indication information is used to indicate condition switching parameters
  • the fifth indication information is used to indicate the target cell for conditional handover.
  • the network side device 600 can implement various processes that can be implemented by the network side device in the method embodiment of the present disclosure, and achieve the same beneficial effects. To avoid repetition, details are not described herein again.
  • the embodiment of the present disclosure also provides a terminal.
  • the terminal may include a second processor 701, a first memory 70/2, and a first computer program 7021 stored on the first memory 702 and running on the second processor 701, a first computer program 7021 When executed by the second processor 701, any steps in the method embodiment corresponding to FIG. 3 can be implemented and the same beneficial effects can be achieved, and details are not described herein again.
  • the embodiment of the present disclosure also provides a network side device.
  • the network side device may include a third processor 801, a second memory 802, and a second computer program 8021 that is stored on the second memory 802 and can run on the third processor 801.
  • the second computer program When 8021 is executed by the third processor 801, any step in the method embodiment corresponding to FIG. 4 can be realized and the same beneficial effect can be achieved, which will not be repeated here.
  • the storage medium such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk, etc.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Maintenance And Management Of Digital Transmission (AREA)
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Abstract

本公开提供一种切换方法、指示方法、终端及网络侧设备。其中，应用于终端的切换方法包括：执行网络侧设备发送的切换命令；在切换失败，且所述终端配置有条件切换的情况下，执行条件切换流程。

Description

切换方法、指示方法、终端及网络侧设备
相关申请的交叉引用
本申请主张在2019年6月17日在中国提交的中国专利申请号No.201910522155.4的优先权，其全部内容通过引用包含于此。
技术领域
本公开实施例涉及通信技术领域，尤其涉及一种切换方法、指示方法、终端及网络侧设备。
背景技术
在移动通信系统中，当处于通信状态的终端从一个小区移动到另外一个小区，或者终端的服务小区的链路质量恶化时，为了保证通信的连续性，终端可以进行小区切换。
目前，网络侧设备根据终端上报的测量报告确定终端是否有进行小区切换的需求，在确定终端有小区切换的需求时，网络侧设备向终端发送切换命令，指示终端进行小区切换。在相关技术中，若切换失败，则终端会执行无线资源控制(Radio Resource Control，RRC)重建流程，切换失败率较高。
发明内容
本公开实施例提供一种切换方法、指示方法、终端及网络侧设备，以解决相关技术中因终端在执行切换命令切换失败后执行RRC重建流程，导致切换失败率较高问题。
为解决上述问题，本公开是这样实现的：
第一方面，本公开实施例提供了一种切换方法，应用于终端，所述切换方法包括：
执行网络侧设备发送的切换命令；
在切换失败，且所述终端配置有条件切换的情况下，执行条件切换流程。
第二方面，本公开实施例提供了一种指示方法，应用于网络侧设备，所述 指示方法包括：
向终端发送第一指示信息，所述第一指示信息用于指示所述终端，在执行切换命令切换失败，且配置有条件切换的情况下，根据所述第一指示信息执行条件切换流程。
第三方面，本公开实施例还提供一种终端，所述终端包括：
处理器，用于：
执行网络侧设备发送的切换命令；
在切换失败，且所述终端配置有条件切换的情况下，执行条件切换流程。
第四方面，本公开实施例还提供一种网络侧设备，所述网络侧设备包括：
收发器，用于向终端发送第一指示信息，所述第一指示信息用于指示所述终端，在执行切换命令切换失败，且配置有条件切换的情况下，根据所述第一指示信息执行条件切换流程。
第五方面，本公开实施例还提供一种终端，包括第二处理器、第一存储器及存储在所述第一存储器上并可在所述第二处理器上运行的第一计算机程序，所述第一计算机程序被所述第二处理器执行时实现如上所述的切换方法的步骤。
第六方面，本公开实施例还提供一种网络侧设备，包括第三处理器、第二存储器及存储在所述第二存储器上并可在所述第三处理器上运行的第二计算机程序，所述第二计算机程序被所述第三处理器执行时实现如上所述的指示方法的步骤。
第七方面，本公开实施例还提供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第三计算机程序，所述第三计算机程序被第四处理器执行时实现如上所述的切换方法的步骤，或，如上所述的指示方法的步骤。
在本公开实施例中，终端在执行网络设备发送的切换命令，且切换失败的情况下，若配置有条件切换，则可以继续执行条件切换流程，从而可以提高终端接入目标小区的几率，进而可以降低切换失败率。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例描述 中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本公开实施例可应用的一种网络系统的结构图；
图2是本公开实施例提供的条件切换的流程图；
图3是本公开实施例提供的切换方法的流程图；
图4是本公开实施例提供的指示方法的流程图；
图5是本公开实施例提供的终端的结构图之一；
图6是本公开实施例提供的网络侧设备的结构图之一；
图7是本公开实施例提供的终端的结构图之二；
图8是本公开实施例提供的网络侧设备的结构图之二。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
本申请中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，本申请中使用“和/或”表示所连接对象的至少其中之一，例如A和/或B和/或C，表示包含单独A，单独B，单独C，以及A和B都存在，B和C都存在，A和C都存在，以及A、B和C都存在的7种情况。
请参见图1，图1是本公开实施例可应用的一种网络系统的结构图，如图1所示，包括终端11和网络侧设备12，其中，终端11和网络侧设备12之间可以进行通信。
在本公开实施例中，终端11也可以称作用户设备(User Equipment，UE)， 在实际应用中，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(Personal Digital Assistant，PDA)、移动上网装置(Mobile Internet Device，MID)、可穿戴式设备(Wearable Device)或车载设备等。网络侧设备12可以是基站、中继、接入点或其他网元等，其中，基站可以是终端的源基站或终端的目标基站。
为了方便理解，以下对本公开实施例涉及的一些内容进行说明：
条件切换：当UE和服务小区之间的信道突然变差(尤其高频或者终端快速移动时)，导致UE无法正常接收到切换命令，进而无法完成切换过程时，网络侧设备可以配置UE在一个较低的门限就触发测量上报，在切换(Handover，HO)命令中携带一个触发切换的门限，其中还可携带UE在目标小区中使用的随机接入资源，一旦切换门限被满足，UE就可以向目标基站发起随机接入过程。
图2是本公开实施例提供的条件切换的流程图，如图2所示，条件切换流程可以包括以下步骤：
步骤201、终端向源基站(Source eNB)发送测量报告(Measurement Report)。
步骤202、源基站执行条件切换(Condition Handover，CHO)决策(Decision)。
步骤203、在决定要配置条件切换的情况下，源基站向目标基站(Target eNB)和/或其他候选基站发送CHO请求。
步骤204、目标基站和/或其他候选基站在接收到CHO请求后，执行CHO允许控制(Admission Control)决策。
步骤205、在允许CHO的情况下，目标基站和/或其他候选基站向源基站发送CHO请求确认(ACK)消息。
其中，CHO请求确认消息中可以包括(Include)RRC配置(Configuration，Config)等。
步骤206、源基站向终端发送携带条件切换配置的RRC重配(RRC Reconfiguration)消息。
步骤207、触发条件满足的情况下，终端触发(Trigger)条件切换。
步骤208、终端与目标基站执行同步(Synchronization)，随机接入(Random Access)，RRC连接建立(Connection Setup)等流程。
步骤209、目标基站向源基站发送CHO完成(CHO Complete)消息。
需要说明的是，网络侧设备给终端配置了条件切换之后，UE在等待条件切换触发的过程中，如果收到网络侧设备发送的普通切换命令，UE会立即执行普通切换命令。
参见图3，图3是本公开实施例提供的切换方法的流程图。本公开实施例的切换方法可以应用于终端。如图3所示，切换方法可以包括以下步骤：
步骤301、执行网络侧设备发送的切换命令。
具体实现时，终端在接收到网络侧设备发送的切换命令后，执行切换操作。具体地，终端可能切换失败也可能切换成功。如：在网络侧设备给终端选择的目标小区并不是终端运动的方向的情况下，终端可能切换失败。在切换失败的情况下，可以执行步骤302。
在本公开实施例中，切换命令具体可以为网络侧设备发送的普通切换命令或立即(Immediate)切换命令，但不仅限于此，也可以是其他网络侧设备发送的指示终端进行切换操作的指示或命令。
步骤302、在切换失败，且所述终端配置有条件切换的情况下，执行条件切换流程。
在本公开实施例中，可选的，步骤302包括：在切换失败时，终端执行小区选择，如果所述小区选择的结果为所述条件切换的目标小区，并且根据网络侧配置，在切换失败后所述终端被允许执行所述条件切换流程，则执行所述条件切换流程。
这样，相比于在切换失败的情况下，直接执行小区重建流程而言，本公开具体实施例中，终端可以重新通过条件切换流程进行小区切换，因此可以提高终端接入目标小区的几率，进而降低切换失败的几率。
在本公开实施例中，终端的条件切换可以由源基站、目标基站或其他网元等网络侧设备配置。具体实现时，网络侧设备可以为终端配置进行条件切换的条件，该条件可以但不仅限于包括以下至少一项：候选的小区列表；每个候选小区的切换条件，如A3事件的门限。
需要说明的是，为终端配置条件切换的网络侧设备，与向终端发送切换命令的网络侧设备可以不为同一网络侧设备，如：源基站向终端发送切换命令， 目标基站为终端配置条件切换。当然，为终端配置条件切换的网络侧设备，与向终端发送切换命令的网络侧设备也可以为同一网络侧设备，具体可根据实际需求确定，本公开实施例对此不作限定。
本公开实施例的切换方法，终端在执行网络设备发送的切换命令，且切换失败的情况下，若配置有条件切换，则可以继续执行条件切换流程，从而可以提高终端接入目标小区的几率，进而可以降低切换失败率。
在本公开实施例中，在切换失败的情况下，UE还可以先执行小区选择，如果选择到的目标小区是条件切换的目标小区，则执行条件切换流程。
由前述内容可知，网络侧设备可以为终端配置进行条件切换的条件，因此，一种实施方式中，在切换失败，且配置有条件切换的情况下，终端可以根据上述条件执行条件切换流程。
在本公开的另一实施方式中，可选的，所述执行条件切换流程，包括：
根据所述网络侧设备发送的第一指示信息和协议预先约定的处理策略中的至少一项，执行条件切换流程。
可选的，所述第一指示信息可以包括如下信息中的至少一项：
第二指示信息，用于指示所述终端，在执行所述切换命令切换失败，且配置有条件切换的情况下，转换到条件切换流程；
第三指示信息，用于指示定时器的定时信息，在述定时器计时结束前任意触发条件满足，所述终端执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
第四指示信息，用于指示条件切换参数；
第五指示信息，用于指示条件切换的目标小区；
第六指示信息，用于指示条件切换的最大次数，条件切换次数未达到所述最大次数前任意触发条件满足，所述终端执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
第七指示信息，用于指示判断是否满足条件切换的触发条件的最大判断次数，判断次数达到所述最大判断次数之前任意触发条件满足，所述终端执行满足的触发条件对应的条件切换流程，否则执行小区重建流程。
具体实现时，定时器的定时信息可以包括以下至少一项：定时器的计时时 长；定时器的启动条件。在定时器的定时信息未包括计时时长的情况下，定时器的计时时长可以默认设置，或由终端用户自主调整。定时器的启动条件可以为：终端执行所述切换命令失败，且配置有条件切换。
可选的，在所述第一指示信息包括所述第二指示信息时，步骤302包括：在切换失败的情况下，执行小区选择；如果小区选择的结果为所述条件切换的所述目标小区，根据所述第二指示信息，转换到并执行所述条件切换流程。
可选的，定时器的计时时长可以与终端的移动速度和终端所在网络的工作频率中的至少一项相关。
具体地，定时器的计时时长可以与终端的移动速度负相关，即终端的移动速度越快，定时器的计时时长越短。这样，终端的移动速度越快，定时器的计时时长越短，终端在切换失败到执行条件切换流程的间隔时间越短，从而可以提高切换的可靠性。
定时器的计时时长也可以与终端所在网络的工作频率负相关，如终端在高频网络(如5G网络)时定时器的计时时长相比于终端在低频网络(如4G网络)时的计时时长较短。这样，终端所在网络的工作频率越高，定时器的计时时长越短，终端在切换失败到执行条件切换流程的间隔时间越短，从而可以提高切换的可靠性。
与定时器计时时长的确定类似，条件切换的最大次数可以与终端的移动速度和终端所在网络的工作频率中的至少一项相关。具体地，条件切换的最大次数可以与终端的移动速度负相关，即终端的移动速度越快，条件切换的最大次数越少。条件切换的最大次数可以与终端所在网络的工作频率负相关。这样，终端的移动速度越快，终端所在网络的工作频率越高，条件切换的最大次数越少，终端在切换失败后执行条件切换流程的次数越少，从而可以提高切换的可靠性。
与定时器计时时长的确定类似，最大判断次数可以与终端的移动速度和终端所在网络的工作频率中的至少一项相关。具体地，最大判断次数可以与终端的移动速度负相关，即终端的移动速度越快，最大判断次数越少。最大判断次数可以与终端所在网络的工作频率负相关。这样，终端的移动速度越快，终端所在网络的工作频率越高，最大判断次数越少，终端在切换失败后执行条件切 换流程的次数越少，从而可以提高切换的可靠性。
需要说明的是，网络侧设备可能会配置针对多个目标小区的条件切换，且每个目标小区的条件切换的触发条件可以不同。因此，在任意触发条件满足的情况下，终端执行满足的触发条件对应的条件切换流程。如：假设网络侧设备配置目标小区1和目标小区2的条件切换，目标小区1的条件切换的触发条件为触发条件a，目标小区2的条件切换的触发条件为触发条件b。若在定时器计时结束前触发条件b满足，则终端可以在目标小区2执行条件切换流程。
具体实现时，条件切换参数可以包括：
新的条件切换判决门限，如A3事件的新门限；或，
条件判决门限的调整量，如A3事件的门限下调20％。
具体实现时，第五指示信息指示的目标小区可以由网络侧设备根据终端上报的测量结果确定。
在实际应用中，可选的，所述第一指示信息可以通过所述切换命令或RRC重配置消息传输，但不仅限于此。
协议预先约定的处理策略可以包括如下处理策略中的至少一项：
第一处理策略：终端在执行所述切换命令切换失败，且配置有条件切换的情况下，转换到条件切换流程；
第二处理策略：终端在执行所述切换命令切换失败，且配置有条件切换的情况下，更新条件切换参数，并根据条件切换参数执行条件切换流程；
第三处理策略：终端在执行所述切换命令切换失败，且配置有条件切换的情况下，启动定时器，若所述定时器计时结束前任意触发条件满足，则执行满足的触发条件对应的条件切换流程，否则执行小区重建流程。
由上述内容可知，终端可以根据所述网络侧设备发送的第一指示信息和协议预先约定的处理策略中的至少一项，执行条件切换流程。为方便理解，以下针对终端根据所述第一指示信息执行条件切换流程、根据协议预先约定的处理策略执行条件切换流程、根据所述第一指示信息和协议预先约定的处理策略执行条件切换流程的各情况进行说明。
情况一、根据所述网络侧设备发送的第一指示信息执行条件切换流程。
在情况一中，可选的，所述根据所述网络侧设备发送的第一指示信息和协 议预先约定的处理策略中的至少一项，执行条件切换流程，包括以下至少之一：
在接收到的所述网络侧设备发送的第一指示信息包括所述第二指示信息的情况下，执行条件切换流程；
在接收到的所述网络侧设备发送的第一指示信息包括所述第三指示信息的情况下，启动所述定时器，若所述定时器在定时结束前任意触发条件满足，则执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
在接收到的所述网络侧设备发送的第一指示信息包括所述第四指示信息的情况下，利用所述条件切换参数执行条件切换流程；
在接收到的所述网络侧设备发送的第一指示信息包括所述第五指示信息的情况下，在所述目标小区执行条件切换流程。
具体实现时，第二指示信息可以包括第一字段或第二字段，第一字段用于指示所述终端，在切换失败，且配置有条件切换的情况下，转换到条件切换流程；第二字段用于指示所述终端，在切换失败，且配置有条件切换的情况下，转换到小区重建流程。
在该场景中，在接收到包括第一字段的第二指示信息的情况下，终端可以在切换失败，且配置有条件切换的情况下，执行条件切换流程；在接收到包括第二字段的第二指示信息的情况下，终端可以在切换失败，且配置有条件切换的情况下，执行小区重建流程。
需要说明的是，在情况一中，若终端接收到的第一指示信息中未包括第二指示信息，但包括上述除第二指示信息之外的其他指示信息，第一指示信息隐式指示终端可以在切换失败，且配置有条件切换的情况下，执行条件切换流程，这样，终端才可以根据第一指示信息，执行条件切换流程。
另外，在第一指示信息包括上述除第二指示信息之外的两个或两个以上其他指示信息的情况下，终端可以结合第一指示信息中包括的指示信息，执行条件切换流程。
示例性的，若第一指示信息包括第四指示信息和第七指示信息，且第四指示信息指示条件判决门限的调整量，第七指示信息指示的最大判断次数3。则终端可以按照递减的方式，根据上述调整量调节每次进行判断的条件判断门限。如：在进行了两次判断的情况下，第一次判断的条件判断门限可以比第二次判 断的条件判断门限大一个调整量。这样，可以使得终端更容易满足条件切换的触发条件，进而执行与触发条件对应的条件切换流程。
若第一指示信息包括第三指示信息和第五指示信息，则终端可以在所述定时器计时结束前任意触发条件满足的情况下，在第五指示信息指示的目标小区执行满足的触发条件对应的条件切换流程。
需要说明的是，在情况一中，在终端未接收到第一指示信息的情况下，即使终端切换失败，且配置有条件切换，终端也将执行小区重建流程。
情况二、根据协议预先约定的处理策略执行条件切换流程。
在情况二中，可选的，所述根据所述网络侧设备发送的第一指示信息和协议预先约定的处理策略中的至少一项，执行条件切换流程，包括以下至少之一：
在所述处理策略包括上述第一处理策略的情况下，执行条件切换流程。
在所述处理策略包括上述第二处理策略的情况下，更新条件切换参数，并根据更新后的调整执行条件切换流程；
在所述处理策略包括上述第三处理策略的情况下，启动所述定时器，在所述定时器计时结束前判断出触发条件满足的情况下，若所述定时器计时结束前任意触发条件满足，则执行满足的触发条件对应的条件切换流程，否则执行小区重建流程。
需要说明的是，在情况二中，若所述处理策略不包括第一处理策略，但包括上述除第一处理策略之外的其他处理策略，所述处理策略隐式指示终端可以在切换失败，且配置有条件切换的情况下，执行条件切换流程，这样，终端才可以根据所述处理策略，执行条件切换流程。
情况三、根据所述第一指示信息和协议预先约定的处理策略执行条件切换流程。
在情况三中，考虑到处理策略由协议预先约定，灵活度较低，因此，终端可以结合第一指示信息和协议预先约定的处理策略执行条件切换流程。
如：处理策略可以包括：终端在切换失败且配置有条件切换的情况下，执行条件切换流程，而执行条件切换流程的目标小区、定时器的计时时长或条件切换的判决门限等信息可以由网络侧设备控制，从而可进一步降低切换失败率。
参见图4，图4是本公开实施例提供的指示方法的流程图。本公开实施例 的指示方法可以应用于网络侧设备。如图4所示，指示方法可以包括以下步骤：
步骤401、向终端发送第一指示信息，所述第一指示信息用于指示所述终端，在执行切换命令切换失败，且配置有条件切换的情况下，根据所述第一指示信息执行条件切换流程。
可选的，所述第一指示信息通过所述切换命令或RRC重配置消息传输。
可选的，所述第一指示信息包括如下信息中的至少一项：
第二指示信息，用于指示所述终端，在执行所述切换命令切换失败，且配置有条件切换的情况下，转换到条件切换流程；
第三指示信息，用于指示定时器的定时信息，所述定时器计时结束前任意触发条件满足，所述终端执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
第四指示信息，用于指示条件切换参数；
第五指示信息，用于指示条件切换的目标小区。
需要说明的是，本实施例作为与上述方法实施例对应的网络侧设备的实施方式，因此，可以参见上述方法实施例中的相关说明，且可以达到相同的有益效果。为了避免重复说明，在此不再赘述。
本公开实施例的指示方法，网络侧设备向终端发送第一指示信息，这样，终端可以在执行切换命令切换失败，且配置有条件切换的情况下，根据所述第一指示信息执行条件切换流程，从而可以提高终端接入目标小区的几率，进而可以降低切换失败率。
需要说明的是，本公开实施例中介绍的多种可选的实施方式，彼此可以相互结合实现，也可以单独实现，对此本公开实施例不作限定。
为方便理解，示例说明如下：
步骤一、网络侧设备，如源基站或目标基站或其它网元，配置UE进行条件切换的条件，可能包括候选的小区列表，和/或对应的切换条件，如A3事件的门限；
步骤二、网络侧设备，如源基站或目标基站或其它网元，给UE发送普通切换命令。
步骤三、网络侧设备，如源基站或目标基站或其它网元，给UE发送如下 信息中的一项或多项：
a)第一指示信息，表征普通切换失败后UE可回退到或可执行条件切换；
b)定时器Timer；终端的速度快，定时器的计时时长短一点，否则长一点，终端所在网络为高频，定时器的计时时长短一点；
c)条件切换的门限调整参数，可能是绝对调整值或者相对调整值；和/或，向合适的方向移动；
d)适用的或不适用的目标小区标识(ID)(列表)。
目标小区可以根据测量上报确定。
特别地，上述信息可以通过普通切换命令携带，也可以通过别的信息携带，如RRC重配置信息等。
步骤四、UE执行普通切换，并失败；
步骤五、UE根据上述步骤三的信息判断，如果其中携带有第一指示信息，表征UE可以执行条件切换，则结合小区选择和测量的结果，判断是否有条件切换的条件得到满足；
a)进一步，如果网络侧配置了条件切换的门限调整参数，如A3事件的新参数或相对原来参数的delta调整量，如A3的门限下调20％等，则终端执行参数调整后的条件切换判断；
b)如果上述步骤二还配置了适用的或不适用的目标小区，则只对配置的小区进行条件切换的条件判断；
c)如果有目标小区满足条件切换的条件，则执行条件切换；
d)如果在一定时间Timer内没有小区满足条件切换，则进行小区重建。
本公开实施例允许终端在普通切换失败后，可继续执行条件切换的方法，使得终端可以尽快接入目标小区，降低切换失败率。
参见图5，图5是本公开实施例提供的终端的结构图之一。如图5所示，终端500包括：
第一处理器501，用于：
执行网络侧设备发送的切换命令；
在切换失败，且所述终端配置有条件切换的情况下，执行条件切换流程。
可选的，所述第一处理器501，具体用于：
根据所述网络侧设备发送的第一指示信息和协议预先约定的处理策略中的至少一项，执行条件切换流程。
可选的，所述第一指示信息通过所述切换命令或无线资源控制RRC重配置消息传输。
可选的，所述第一指示信息包括如下信息中的至少一项：
第二指示信息，用于指示所述终端，在执行所述切换命令切换失败，且配置有条件切换的情况下，转换到条件切换流程；
第三指示信息，用于指示定时器的定时信息，所述定时器计时结束前任意触发条件满足，所述终端执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
第四指示信息，用于指示条件切换参数；
第五指示信息，用于指示条件切换的目标小区。
可选的，所述第一处理器501，具体用于以下至少之一：
在接收到的所述网络侧设备发送的第一指示信息包括所述第二指示信息的情况下，执行条件切换流程；
在接收到的所述网络侧设备发送的第一指示信息包括所述第三指示信息的情况下，启动所述定时器，若所述定时器在定时结束前任意触发条件满足，则执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
在接收到的所述网络侧设备发送的第一指示信息包括所述第四指示信息的情况下，利用所述条件切换参数执行条件切换流程；
在接收到的所述网络侧设备发送的第一指示信息包括所述第五指示信息的情况下，在所述目标小区执行条件切换流程。
终端500能够实现本公开方法实施例中终端能够实现的各个过程，以及达到相同的有益效果，为避免重复，这里不再赘述。
参见图6，图6是本公开实施例提供的网络侧设备的结构图之一。如图6所示，网络侧设备600包括：
收发器601，用于向终端发送第一指示信息，所述第一指示信息用于指示所述终端，在执行切换命令切换失败，且配置有条件切换的情况下，根据所述第一指示信息执行条件切换流程。
可选的，所述第一指示信息通过所述切换命令或RRC重配置消息传输。
可选的，所述第一指示信息包括如下信息中的至少一项：
第二指示信息，用于指示所述终端，在执行所述切换命令切换失败，且配置有条件切换的情况下，转换到条件切换流程；
第三指示信息，用于指示定时器的定时信息，所述定时器计时结束前任意触发条件满足，所述终端执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
第四指示信息，用于指示条件切换参数；
第五指示信息，用于指示条件切换的目标小区。
网络侧设备600能够实现本公开方法实施例中网络侧设备能够实现的各个过程，以及达到相同的有益效果，为避免重复，这里不再赘述。
本公开实施例还提供一种终端。请参见图7，终端可以包括第二处理器701、第一存储器70/2及存储在第一存储器702上并可在第二处理器701上运行的第一计算机程序7021，第一计算机程序7021被第二处理器701执行时可实现图3对应的方法实施例中的任意步骤及达到相同的有益效果，此处不再赘述。
本公开实施例还提供一种网络侧设备。请参见图8，网络侧设备可以包括第三处理器801、第二存储器802、及存储在第二存储器802上并可在第三处理器801上运行的第二计算机程序8021，第二计算机程序8021被第三处理器801执行时可实现图4对应的方法实施例中的任意步骤及达到相同的有益效果，此处不再赘述。
本领域普通技术人员可以理解实现上述实施例方法的全部或者部分步骤是可以通过程序指令相关的硬件来完成，所述的程序可以存储于一计算机可读取介质中。本公开实施例还提供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第三计算机程序，所述第三计算机程序被第四处理器执行时可实现上述图3或图4对应的方法实施例中的任意步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
所述的存储介质，如只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
以上所述是本公开的可选实施方式，应当指出，对于本技术领域的普通技 术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。

Claims (21)

  1. 一种切换方法，应用于终端，所述切换方法包括：
    执行网络侧设备发送的切换命令；
    在切换失败，且所述终端配置有条件切换的情况下，执行条件切换流程。
  2. 根据权利要求1所述的切换方法，其中，所述执行条件切换流程，包括：
    根据所述网络侧设备发送的第一指示信息和协议预先约定的处理策略中的至少一项，执行条件切换流程。
  3. 根据权利要求2所述的切换方法，其中，所述第一指示信息通过所述切换命令或无线资源控制RRC重配置消息传输。
  4. 根据权利要求2所述的切换方法，其中，所述第一指示信息包括如下信息中的至少一项：
    第二指示信息，用于指示所述终端，在执行所述切换命令切换失败，且配置有条件切换的情况下，转换到条件切换流程；
    第三指示信息，用于指示定时器的定时信息，所述定时器计时结束前任意触发条件满足，所述终端执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
    第四指示信息，用于指示条件切换参数；
    第五指示信息，用于指示条件切换的目标小区。
  5. 根据权利要求4所述的切换方法，其中，在所述第一指示信息包括所述第二指示信息时，所述在切换失败，且所述终端配置有条件切换的情况下，执行条件切换流程，包括：
    在切换失败的情况下，执行小区选择；
    如果所述小区选择的结果为所述条件切换的所述目标小区，根据所述第二指示信息，转换到并执行所述条件切换流程。
  6. 根据权利要求4或5所述的切换方法，其中，所述根据所述网络侧设备发送的第一指示信息和协议预先约定的处理策略中的至少一项，执行条件切换流程，包括以下至少之一：
    在接收到的所述网络侧设备发送的第一指示信息包括所述第二指示信息的情况下，执行条件切换流程；
    在接收到的所述网络侧设备发送的第一指示信息包括所述第三指示信息的情况下，启动所述定时器，若所述定时器在定时结束前任意触发条件满足，则执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
    在接收到的所述网络侧设备发送的第一指示信息包括所述第四指示信息的情况下，利用所述条件切换参数执行条件切换流程；
    在接收到的所述网络侧设备发送的第一指示信息包括所述第五指示信息的情况下，在所述目标小区执行条件切换流程。
  7. 一种指示方法，应用于网络侧设备，所述指示方法包括：
    向终端发送第一指示信息，所述第一指示信息用于指示所述终端，在执行切换命令切换失败，且配置有条件切换的情况下，根据所述第一指示信息执行条件切换流程。
  8. 根据权利要求7所述的指示方法，其中，所述第一指示信息通过所述切换命令或RRC重配置消息传输。
  9. 根据权利要求7所述的指示方法，其中，所述第一指示信息包括如下信息中的至少一项：
    第二指示信息，用于指示所述终端，在执行所述切换命令切换失败，且配置有条件切换的情况下，转换到条件切换流程；
    第三指示信息，用于指示定时器的定时信息，所述定时器计时结束前任意触发条件满足，所述终端执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
    第四指示信息，用于指示条件切换参数；
    第五指示信息，用于指示条件切换的目标小区。
  10. 一种终端，所述终端包括：
    第一处理器，用于：
    执行网络侧设备发送的切换命令；
    在切换失败，且所述终端配置有条件切换的情况下，执行条件切换流程。
  11. 根据权利要求9所述的终端，其中，所述第一处理器，具体用于：
    根据所述网络侧设备发送的第一指示信息和协议预先约定的处理策略中的至少一项，执行条件切换流程。
  12. 根据权利要求11所述的终端，其中，所述第一指示信息通过所述切换命令或无线资源控制RRC重配置消息传输。
  13. 根据权利要求11所述的终端，其中，所述第一指示信息包括如下信息中的至少一项：
    第二指示信息，用于指示所述终端，在执行所述切换命令切换失败，且配置有条件切换的情况下，转换到条件切换流程；
    第三指示信息，用于指示定时器的定时信息，所述定时器计时结束前任意触发条件满足，所述终端执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
    第四指示信息，用于指示条件切换参数；
    第五指示信息，用于指示条件切换的目标小区。
  14. 根据权利要求13所述的终端，其中，在所述第一指示信息包括所述第二指示信息时，所述第一处理器，具体用于：
    在切换失败的情况下，执行小区选择；
    如果所述小区选择的结果为所述条件切换的所述目标小区，根据所述第二指示信息，转换到并执行所述条件切换流程。
  15. 根据权利要求13或14所述的终端，其中，所述第一处理器，具体用于以下至少之一：
    在接收到的所述网络侧设备发送的第一指示信息包括所述第二指示信息的情况下，执行条件切换流程；
    在接收到的所述网络侧设备发送的第一指示信息包括所述第三指示信息的情况下，启动所述定时器，若所述定时器在定时结束前任意触发条件满足，则执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
    在接收到的所述网络侧设备发送的第一指示信息包括所述第四指示信息的情况下，利用所述条件切换参数执行条件切换流程；
    在接收到的所述网络侧设备发送的第一指示信息包括所述第五指示信息的情况下，在所述目标小区执行条件切换流程。
  16. 一种网络侧设备，所述网络侧设备包括：
    收发器，用于向终端发送第一指示信息，所述第一指示信息用于指示所述终端，在执行切换命令切换失败，且配置有条件切换的情况下，根据所述第一指示信息执行条件切换流程。
  17. 根据权利要求16所述的网络侧设备，其中，所述第一指示信息通过所述切换命令或RRC重配置消息传输。
  18. 根据权利要求16所述的网络侧设备，其中，所述第一指示信息包括如下信息中的至少一项：
    第二指示信息，用于指示所述终端，在执行所述切换命令切换失败，且配置有条件切换的情况下，转换到条件切换流程；
    第三指示信息，用于指示定时器的定时信息，所述定时器计时结束前任意触发条件满足，所述终端执行满足的触发条件对应的条件切换流程，否则执行小区重建流程；
    第四指示信息，用于指示条件切换参数；
    第五指示信息，用于指示条件切换的目标小区。
  19. 一种终端，包括第二处理器、第一存储器及存储在所述第一存储器上并可在所述第二处理器上运行的第一计算机程序，所述第一计算机程序被所述第二处理器执行时实现如权利要求1至6中任一项所述的切换方法的步骤。
  20. 一种网络侧设备，包括第三处理器、第二存储器及存储在所述第二存储器上并可在所述第三处理器上运行的第二计算机程序，所述第二计算机程序被所述第三处理器执行时实现如权利要求7至9中任一项所述的指示方法的步骤。
  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第三计算机程序，所述第三计算机程序被第四处理器执行时实现如权利要求1至6中任一项所述的切换方法的步骤，或，权利要求7至9中任一项所述的指示方法的步骤。
PCT/CN2020/096500 2019-06-17 2020-06-17 切换方法、指示方法、终端及网络侧设备 Ceased WO2020253706A1 (zh)

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Publication number Priority date Publication date Assignee Title
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102369760A (zh) * 2011-08-31 2012-03-07 华为技术有限公司 小区切换方法、基站、用户设备及通信系统
WO2018212688A1 (en) * 2017-05-15 2018-11-22 Telefonaktiebolaget Lm Ericsson (Publ) Apparatuses, methods, computer programs, and computer program products for handover optimization of beamforming capable user equipment
CN109076408A (zh) * 2017-01-20 2018-12-21 惠州Tcl移动通信有限公司 小区切换前测量方法、基站及用户设备
CN109392039A (zh) * 2017-08-11 2019-02-26 捷开通讯(深圳)有限公司 通信切换方法及装置
WO2019070174A1 (en) * 2017-10-06 2019-04-11 Telefonaktiebolaget Lm Ericsson (Publ) HIGH-GAIN INTERCELLULAR BEAM TRANSFER
CN110999390A (zh) * 2017-06-15 2020-04-10 Lg电子株式会社 在无线通信系统中执行切换过程的方法及其装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102300278B (zh) 2010-06-28 2016-03-30 中兴通讯股份有限公司 一种切换场景的判决方法及系统
US9532286B2 (en) * 2012-06-15 2016-12-27 Hewlett Packard Enterprise Development Lp Controlling communication of data for different user personas
WO2014111557A1 (en) 2013-01-18 2014-07-24 Telefonaktiebolaget L M Ericsson (Publ) Handover signaling assistance
US10397836B2 (en) * 2016-10-27 2019-08-27 Ofinno, Llc Handover for UE with V2X service
CN108243469B (zh) * 2016-12-23 2021-07-16 夏普株式会社 用户移动性方法和设备
PL3611963T3 (pl) * 2017-04-14 2022-10-03 Beijing Xiaomi Mobile Software Co., Ltd. Sposób i urządzenie do przełączania komórek oraz urządzenie użytkownika
CN108810960B (zh) * 2017-04-28 2021-06-22 华为技术有限公司 一种小区切换、确定上行发送功率的方法及装置
CN114222332A (zh) * 2017-05-10 2022-03-22 华为技术有限公司 小区切换方法、终端、基站设备和通信系统
US20200084683A1 (en) * 2017-11-16 2020-03-12 Telefonaktiebolaget Lm Ericsson (Publ) Target Link Ranking in a Wireless Communication Network

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102369760A (zh) * 2011-08-31 2012-03-07 华为技术有限公司 小区切换方法、基站、用户设备及通信系统
CN109076408A (zh) * 2017-01-20 2018-12-21 惠州Tcl移动通信有限公司 小区切换前测量方法、基站及用户设备
WO2018212688A1 (en) * 2017-05-15 2018-11-22 Telefonaktiebolaget Lm Ericsson (Publ) Apparatuses, methods, computer programs, and computer program products for handover optimization of beamforming capable user equipment
CN110999390A (zh) * 2017-06-15 2020-04-10 Lg电子株式会社 在无线通信系统中执行切换过程的方法及其装置
CN109392039A (zh) * 2017-08-11 2019-02-26 捷开通讯(深圳)有限公司 通信切换方法及装置
WO2019070174A1 (en) * 2017-10-06 2019-04-11 Telefonaktiebolaget Lm Ericsson (Publ) HIGH-GAIN INTERCELLULAR BEAM TRANSFER

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3955639A4 *

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