WO2022068794A1 - 小区选择重选方法、装置、终端及可读存储介质 - Google Patents

小区选择重选方法、装置、终端及可读存储介质 Download PDF

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Publication number
WO2022068794A1
WO2022068794A1 PCT/CN2021/121243 CN2021121243W WO2022068794A1 WO 2022068794 A1 WO2022068794 A1 WO 2022068794A1 CN 2021121243 W CN2021121243 W CN 2021121243W WO 2022068794 A1 WO2022068794 A1 WO 2022068794A1
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Prior art keywords
cell
quality
camp
network side
preset threshold
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English (en)
French (fr)
Inventor
陈力
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to EP21874454.8A priority Critical patent/EP4224908A4/en
Publication of WO2022068794A1 publication Critical patent/WO2022068794A1/zh
Priority to US18/119,073 priority patent/US20230224788A1/en
Anticipated expiration legal-status Critical
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0212Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
    • H04W52/0216Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower using a pre-established activity schedule, e.g. traffic indication frame
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters
    • H04W36/30Reselection being triggered by specific parameters by measured or perceived connection quality data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/20Selecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • H04W74/0836Random access procedures, e.g. with 4-step access with 2-step access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • H04W74/0838Random access procedures, e.g. with 4-step access using contention-free random access [CFRA]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application belongs to the field of communication technologies, and in particular relates to a cell selection reselection method, device, terminal and readable storage medium.
  • TRP transmission reception point
  • the purpose of the embodiments of the present application is to provide a cell selection reselection method, device, terminal, and readable storage medium, which can solve the problem of large power consumption when the terminal performs cell selection and reselection.
  • a cell selection reselection method applied to a terminal, and the method includes:
  • the first reference signal is a reference signal specific to SFN
  • the second reference signal is a reference signal specific to a cell or a transmission and reception point cell/TRP
  • the first cell is a cell specific to SFN
  • the second cell is a cell/TRP specific cell or TRP.
  • a cell selection reselection apparatus applied to a terminal, including:
  • a measurement module configured to measure the first reference signal and/or the second reference signal
  • a camping module configured to choose to camp on the first cell or the second cell according to the measurement result
  • the first reference signal is a reference signal specific to SFN
  • the second reference signal is a reference signal specific to a cell or a transmission and reception point cell/TRP
  • the first cell is a cell specific to SFN
  • the second cell is a cell/TRP specific cell or TRP.
  • a terminal including a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implements the following The steps of the cell selection reselection method described in the first aspect.
  • a readable storage medium is provided, and a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the steps of the cell selection reselection method according to the first aspect are implemented .
  • a fifth aspect provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a network-side device program or instruction, implementing the method described in the first aspect. The steps of the cell selection reselection method described above.
  • the SFN-specific reference signal and/or the cell/TRP-specific reference signal is measured, and based on the measurement result, the terminal is selected to camp in the SFN-specific cell or the cell/TRP-specific cell or TRP, so that the terminal Cell selection or cell reselection can be flexibly performed between SFN-specific cells or cell/TRP-specific cells or TRPs. Compared with the existing selection and reselection only in cells/TRP cells, it can effectively save the power of the terminal. consumption.
  • Figure 1a is a schematic diagram of an SFN architecture
  • Figure 1b is a schematic diagram of a dense network architecture
  • Fig. 1c is a schematic diagram of the random access flow of contention
  • FIG. 1d is a schematic diagram of a non-contention random access process
  • FIG. 2 is a schematic flowchart of a cell selection reselection method provided by an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of a cell selection reselection apparatus provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and "first”, “second” distinguishes Usually it is a class, and the number of objects is not limited.
  • the first object may be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • LTE-A Long Term Evolution-Advanced
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • system and “network” in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies.
  • NR New Radio
  • the following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the description below, although these techniques are also applicable to applications other than NR system applications, such as 6th generation ( 6th Generation , 6G) communication system.
  • 6th generation 6th Generation
  • a terminal may also be referred to as a terminal device or a user terminal (User Equipment, UE), and the terminal may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, Personal Digital Assistant (PDA), PDA, Netbook, Ultra-mobile Personal Computer (UMPC), Mobile Internet Device (MID), Wearable Device (Wearable Device) or Vehicle User Equipment (VUE), Pedestrian User Equipment (PUE) and other terminal-side equipment, wearable devices include: bracelets, headphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal.
  • the network side may be a base station, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (Basic Service Set) , BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node, Transmitting Receiving Point Point, TRP) or any other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiments of this application, only the base station in the NR system is used. For example, but the specific type of the base station is not limited.
  • SFN transmission scheme Multiple cells or multiple transmission points send the same signal, there is no co-channel interference between different cells, and multiple signals can improve Signal to Interference plus Noise Ratio (SINR), transmission quality and overlay effects.
  • Multiple cells forming an SFN can share a cell ID, that is, the ID of a super cell.
  • Multiple cells can transmit signals by means of SFN transmission. For example, each cell transmits with a wide beam, and a terminal can receive the wide beam sent by multiple cells at a certain moment, thereby obtaining diversity gain. In the SFN transmission scheme, the terminal does not need to frequently perform cell reselection or handover between cells.
  • a SFN super cell consisting of 7 cells is shown.
  • the network In the process of IDLE or INACTIVE UE moving, the network provides the priority of each frequency point.
  • the measurement evaluation value of the target (or neighbor) cell (calculated according to the measurement result of the target (or neighbor) cell after adding the offset) is higher than the measurement evaluation value of the serving cell (according to the measurement result of the serving cell)
  • the measurement result is calculated after adding the offset), and it lasts for a period of time (eg, the duration configured by the network), and the UE stays in the current serving cell for more than a period of time (eg, 1s as agreed in the protocol), then the UE restarts.
  • the target (or neighbor) cell is selected.
  • inter-frequency i.e. inter-frequency
  • inter-technology i.e. inter-RAT
  • inter-frequency inter-frequency
  • inter-RAT different technology
  • inter-frequency ie inter-frequency
  • ie inter-RAT different technology
  • IDLE/INACTIVE UE triggers the connection establishment process by receiving the paging message sent by the network side, so as to send and receive data.
  • a low frequency (eg FR1) cell has a larger coverage area than a high frequency (eg FR2) cell.
  • the terminal When the terminal moves within the coverage area of FR1, it may continuously change the FR2 cell, but the FR1 cell will not be replaced.
  • a terminal When a terminal initially activates an FR2 cell or switches an FR2 cell, it needs to continuously measure the signal quality of each beam. Due to the large number of beams, it will lead to an excessively long cell activation time or cell switching time. For example, when certain conditions are met, the measurement time can reach the level of seconds, as follows:
  • the above-mentioned long measurement time will also lead to large power consumption of the UE.
  • the base station can place its protocol stack entities on different control units. For example, radio resource control (Radio Resource Control, RRC) and packet data convergence protocol (Packet Data Convergence Protocol, PDCP) are placed on the CU, radio link layer control (Radio Link Control, RLC) and media access control layer (Media Access Control, MAC)/port physical layer (Physical Layer, PHY) is placed on the DU.
  • RRC Radio Resource Control
  • RLC Radio Link Control
  • MAC Media Access Control
  • PHY Physical Layer
  • CU and DU have certain management rights of radio resources.
  • the CU can manage the cells connected to it through the RRC message
  • the DU can manage the cells connected to it through the MAC CE message.
  • Multiple DUs are connected to one CU, and the CU is connected to the core network and other CUs.
  • Initial search network including synchronization signal block (Synchronization Signal Block, SSB) synchronization and reception of system information. Specifically, first receive the primary synchronization signal (Primary Synchronization Signals, PSS), then receive the secondary synchronization signal (Secondary Synchronization Signals, SSS), and then receive the physical broadcast channel (Physical Broadcast Channel, PBCH): obtain the SSB index, and the PBCH RMRS and PBCH Information in the Master Information Block (MIB).
  • PSS Primary Synchronization Signals
  • SSS Secondary Synchronization Signals
  • PBCH Physical Broadcast Channel
  • Random Access (RACH) procedure :
  • the RACH process is divided into a contention random access process and a non-contention random access process.
  • the contention random access process is four steps: message 1-message 4 four-step access, as shown in Figure 1c, and non-competitive only requires two-step access of message 1 and message 2, as shown in Figure 1d.
  • Both the contention random access and the non-contention random access message 2 send a random access response (Random Access Response, RAR).
  • RAR Random Access Response
  • the UE monitors the RAR corresponding to the random access radio network temporary identity (Radio access Radio Network Temporary Identity, RA-RNTI) in the RAR window.
  • RA-RNTI Radio access Radio Network Temporary Identity
  • the competing random access Since the competing random access has the problem that the UE sends the same preamble in the same PRACH resource, after receiving the message 2, it needs to send the message 3 according to the UL grant in the message, and the UE will send the message 3 in the message.
  • 3 carries the identity of the UE, and starts the contention resolution timer when message 3 is sent. If the message 4 sent by the base station is received before the contention resolution timer expires, the UE contention resolution is successful. The base station will carry the UE identifier in the message. The UE can judge whether it is its own message 4 according to the UE identity carried in the message 4, so as to judge whether the competition is successful.
  • 2-step RACH is cited: that is, the RACH process includes two steps: the terminal sends message A to the network side, and then receives the message B sent by the network side.
  • message A includes the functions of the above-mentioned message 1 or message 1 and message 3
  • message B includes the functions of the above-mentioned message 2 or message 2 and message 4.
  • the UE scans all RF channels one by one (scanning sequence protocol is not specified) to find suitable NR cells; in each scanned carrier frequency, the UE only needs to search for the cell with the strongest signal quality ; Once a suitable cell is found, the cell is selected for camping. And stop the initial cell selection process, that is, the unscanned RF channels do not need to be scanned again.
  • a so-called suitable cell meets at least all of the following conditions:
  • the signal quality of the cell meets a preset condition; the signal quality includes: Reference Signal Receiving Power (RSRP) and/or Reference Signal Receiving Quality (RSRQ);
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • (2) UE can obtain necessary system information (including at least MIB and SIB1);
  • cell access restriction information element (cellbar IE) in the system information (which can be barred and notBarred) is set to notBarred, that is, the cell is not prohibited from attaching or accessing.
  • the UE evaluates whether there is a suitable reselection target cell for each frequency point, starting from the high-priority frequency point based on the order of the frequency point priorities provided by the network, and only the suitable cell can be used as the target cell for reselection.
  • Different frequencies can be configured with the same or different frequency priorities.
  • the UE When the UE camps on the serving cell, if there is a cell with a higher priority NR or LTE frequency, the signal quality of the cell within a period of Treselection RAT Squal > threshold Thresh X,, HighQ , or
  • a cell with a higher priority NR or other RAT frequency satisfies the signal strength Srxlev> threshold Thresh X, HighP within a period of time TreselectionRAT and the UE has been camped on the current serving cell for more than one second, then initiate a transfer to the current serving cell.
  • Cell reselection process on frequencies of higher priority NR or other RATs.
  • a suitable cell refers to a cell where the UE can camp on and obtain normal services.
  • the UE needs to have a valid USIM, and the above-mentioned suitable cell at least meets the following characteristics:
  • the cell belongs to the following PLMNs of the UE: a PLMN selected by the UE (Selected PLMN) or a registered PLMN (Registered PLMN) or a PLMN in the Equivalent PLMN list (Equivalent PLMN list).
  • the broadcasted tracking area (Tracking Area, TA) information of the cell does not belong to the forbidden TA area (list of "Forbidden Tracking Areas").
  • an embodiment of the present application provides a cell selection reselection method, that is, a cell selection and/or cell reselection method, applied to a terminal, and the method includes:
  • Step 201 measure the first reference signal and/or the second reference signal
  • Step 202 According to the measurement result, choose to camp in the first cell or the second cell;
  • the first reference signal is an SFN-specific (may be called SFN specific or SFN super cell specific) reference signal
  • the second reference signal is a cell/TRP-specific (may be called cell/TRP specific) reference signal
  • the first cell is an SFN-specific (may be referred to as an SFN layer) cell
  • the second cell is a cell/TRP-specific (may be referred to as a cell/TRP layer) cell.
  • SFN is the scope of a super cell, which includes several cells or TRPs, and is usually called an SFN super cell as an SFN layer.
  • the cell corresponding to the super cell or the SFN layer is a specific cell of the SFN; and several cells or TRPs included in the SFN range are the cell/TRP layer.
  • the cell/TRP corresponding to this layer is a specific cell or TRP of the cell/TRP.
  • the reference signal (RS), system message (SI), paging message (paging), etc. on the SFN layer are called SFN-specific RS, SI, paging, etc.
  • RS, SI, paging, etc. in the cell/TRP layer are called cell/TRP-specific RS, SI, paging, etc.
  • cell/TRP specific That is, the relevant configuration corresponding to each cell/TRP is independent.
  • the configuration in the cell/TRP scope is the same.
  • SFN/super cell specific that is, the related configuration corresponding to each SFN or super cell is independent.
  • the configuration in the SFN scope or the super cell scope is the same.
  • the above-mentioned types of the first reference signal and the second reference signal may include multiple types.
  • the reference signal may be SSB, that is, SFN specific SSB and cell/TRP specific SSB, and the reference signal may also be channel state information reference.
  • Signal Channel-State Information reference Signal, CSI-RS), Cell Reference Signal (CRS), Sounding Reference Signal (Sounding Reference Signal, SRS), Demodulation Reference Signal (Demodulation Reference Signal, DMRS), etc. reference signal.
  • the SFN-specific reference signal and/or the cell/TRP-specific reference signal is measured, and based on the measurement result, the terminal is selected to camp in the SFN-specific cell or the cell/TRP-specific cell or TRP, so that the terminal Cell selection or cell reselection can be flexibly performed between SFN-specific cells or cell/TRP-specific cells or TRPs. Compared with the existing selection and reselection only in cells/TRP cells, it can effectively save the power of the terminal. consumption.
  • the relevant parameters of the first reference signal are indicated by an SFN-specific system message (SFN specific SI) or a cell/TRP-specific system message (cell/TRP specific SI); Parameters are indicated by cell/TRP specific system messages.
  • SFN specific SI SFN-specific system message
  • cell/TRP specific SI cell/TRP-specific system message
  • Parameters are indicated by cell/TRP specific system messages.
  • the relevant parameters of the above reference signal may include: measurement time configuration (SS block based RRM measurement timing configuration, SMTC) of the synchronization signal block, synchronization raster (sync raster), SSB identification (ID), etc., this application
  • SMTC measurement time configuration
  • synchronization raster sync raster
  • ID SSB identification
  • the method further includes: the terminal changes from camping on the second cell to camping on the first cell through cell reselection or cell selection operation, that is, from camp on cell/TRP layer cell to camp on SFN layer super cell.
  • the first cell when the network is deployed with high-frequency and low frequency layers, the first cell includes cells in the low-frequency range, and the second cell includes cells in the high-frequency range; Or, when the network includes a satellite communication network (satellite or HAPS), the first cell includes a High Altitude Platform Station (HAPS) cell or a high-orbit satellite cell, and the second cell includes a low-orbit satellite A cell or a cell covered by a terrestrial base station.
  • HAPS High Altitude Platform Station
  • the method further includes: after camping on the first cell or the second cell, initiating random access (RACH) or connection establishment in the second cell.
  • RACH random access
  • the above-mentioned selecting to camp on the first cell or the second cell according to the measurement result includes the following steps:
  • the cell quality of the first cell and the second cell choose to camp in the first cell or the second cell
  • the cell quality of the first cell and the second cell is determined in at least one of the following manners:
  • N is the protocol agreement, or the configuration on the network side.
  • determining the cell quality may be one of the above-mentioned multiple manners, or two or more than two, and the camped cell may be determined by comparing the cell qualities of multiple dimensions at the same time.
  • the camping cell is determined by comparing the quality of the cells through the average of the beam measurement results and the number of beams whose beam measurement results are higher than the preset measurement threshold. Others are similar.
  • different methods can also be used to compare the quality of cells under different conditions. Specifically, when no beam measurement result is higher than the preset threshold, the highest beam measurement result is used to determine the quality of the cell; when there are multiple beam measurement results higher than the preset threshold, the highest beam measurement result is used to determine the quality of the cell; The quality of the cell is determined by setting the average value of the thresholded preset beam measurement results.
  • the measurement results include at least one of the following: RSRP, RSRQ, SINR, Block Error Rate (Block Error Rate, BLER), and Received Signal Strength Indication (RSSI).
  • the reference signal received by the terminal includes the first reference signal and the second reference signal, that is, the system includes the SFN specific reference signal and the cell/TRP specific reference signal;
  • the reference signals received by the terminal are all first reference signals, that is, all reference signals included in the system are SFN specific reference signals;
  • Case 3 The reference signals received by the terminal are all second reference signals, that is, all reference signals included in the system are cell/TRP specific reference signals;
  • the method for selecting to camp on the first cell or the second cell includes at least one of the following:
  • the preset priority preferentially choose to reside in the first cell, that is, configure a higher priority for the SFN layer, and the preset priority is configured by the network side or agreed by the protocol;
  • the preset priority preferentially choose to reside in the second cell, that is, configure a higher priority for the cell/TRP layer, and the preset priority is configured by the network side or agreed by the protocol;
  • the cell quality of the first cell is higher than the first preset threshold (that is, the SFN layer super cell satisfies the suitable cell), choose to camp in the first cell; or, when the cell quality of the first cell is lower than the second cell
  • the preset threshold is selected, the second cell where the quality of the cell is higher than the third preset threshold is selected, and the first preset threshold, the second preset threshold, and the third preset threshold are configured by the network side;
  • the third preset threshold value may be the same as the first preset threshold value, and the third preset threshold value may also be different from the first preset threshold value.
  • the cell quality of the second cell is higher than the fourth preset threshold (that is, the cell/TRP layer cell satisfies the suitable cell), choose to camp in the second cell; or, when the cell quality of the second cell is lower than the first cell
  • the fourth preset threshold, the fifth preset threshold, and the sixth preset threshold are configured by the network side;
  • sixth preset threshold value may be the same as the fourth preset threshold value, and the sixth preset threshold value may also be different from the fourth preset threshold value.
  • the cell quality of the first cell is higher than the cell quality of the second cell by a first value, and the first value is selected to reside in the first cell, and the first value is configured by the network side or agreed by an agreement;
  • the cell quality of the first cell is lower than the cell quality of the second cell by a second value, choose to reside in the second cell, and the second value is configured by the network side or agreed by the agreement;
  • first numerical value and second numerical value may be the same or different.
  • the method further includes:
  • first compensation and second compensation are the same or may be different.
  • the embodiment of the present application also includes a method for realizing the selection of the first cell and the second cell through the network side:
  • the priorities of the first cell and the second cell are determined according to the frequency priority configured on the network side.
  • the SFN cell is preferentially selected
  • the cell/TRP cell is preferentially selected, and then the cell/TRP cell and the SFN layer super cell are selected to reside in the cell/TRP cell and the SFN layer super cell.
  • the method for selecting to camp on the first cell or the second cell includes at least one of the following:
  • the preset priority preferentially choose to camp in the first cell, and the preset priority is configured by the network side or agreed by the agreement;
  • the first preset threshold that is, the SFN layer super cell satisfies the suitable cell
  • the method further includes:
  • a first compensation is added to the cell quality of the first cell, where the first compensation is configured by the network side or agreed in the protocol.
  • the method further includes:
  • first indication information is received from the network side, where the first indication information includes at least one of the following:
  • ID SFN identification
  • index index
  • SFN group (group) or range of SFN
  • the SFN to which the cell belongs is the SFN to which the cell belongs.
  • selecting to camp in the first cell or the second cell also includes:
  • the terminal When the terminal supports the first cell, it is preferred to camp in the first cell, that is, when the terminal supports the SFN layer super cell, according to one of the above rules, for example, the SFN layer super cell has priority;
  • the network side indicates to support the first cell
  • it is preferred to reside in the first cell that is, when the network indicates to support the SFN super layer, according to one of the above rules, for example, the SFN layer super cell is preferentially selected;
  • the network side instructs the terminal to camp on the first cell or preferentially camps on the first cell
  • it preferentially chooses to camp on the first cell that is, when the network sends an instruction to the terminal indicating that the terminal camps on the SFN layer super cell or preferentially camps on the first cell
  • the network sends an instruction to the terminal indicating that the terminal camps on the SFN layer super cell or preferentially camps on the first cell When staying, follow one of the above rules, for example, choose SFN layer super cell first;
  • the network side indicates the terminal through a system message or a dedicated RRC message
  • the dedicated RRC message includes at least one of the following: RRC release (release), RRC suspend (suspend) message.
  • the execution subject may be a cell selection reselection apparatus, or a control module in the cell selection reselection apparatus for executing the cell selection reselection method.
  • the cell selection reselection method provided by the embodiment of the present application is described by taking the cell selection reselection method performed by the cell selection reselection apparatus as an example.
  • an embodiment of the present application provides a cell selection reselection apparatus 300, applied to a terminal, including:
  • a measurement module 301 configured to measure the first reference signal and/or the second reference signal
  • the first reference signal is a reference signal specific to SFN
  • the second reference signal is a reference signal specific to a cell or a transmission and reception point cell/TRP
  • the first cell is a cell specific to SFN
  • the second cell is a cell/TRP specific cell or TRP.
  • the relevant parameters of the first reference signal are indicated by an SFN-specific system message or a cell/TRP-specific system message; or, the relevant parameters of the second reference signal are indicated by a cell/TRP-specific system message message indication.
  • the residency module includes:
  • a determining unit configured to determine the cell quality of the first cell and the second cell according to the measurement result
  • a camping unit configured to select to camp on the first cell or the second cell according to the cell quality of the first cell and the second cell.
  • the determining unit is further used for at least one of the following:
  • the cell quality of the first cell is determined according to the number of beams whose beam measurement results are higher than a preset measurement threshold.
  • the dwell unit when the reference signal received by the terminal includes a first reference signal and a second reference signal, the dwell unit is further configured to at least one of the following:
  • the preset priority it is preferred to camp on the first cell, and the preset priority is configured by the network side or agreed upon in an agreement;
  • a preset priority preferentially chooses to camp on the second cell, and the preset priority is configured by the network side or agreed in a protocol;
  • the cell quality of the first cell When the cell quality of the first cell is higher than the first preset threshold, select to camp on the first cell; or, when the cell quality of the first cell is lower than the second preset threshold, select to camp on staying in the second cell whose cell quality is higher than a third preset threshold, where the first preset threshold, the second preset threshold, and the third preset threshold are configured by the network side;
  • the fourth preset threshold selects camp on the second cell; or, when the cell quality of the second cell is lower than the fifth preset threshold, select to camp on Staying in the first cell where the cell quality is higher than a sixth preset threshold, the fourth preset threshold, the fifth preset threshold, and the sixth preset threshold are configured by the network side;
  • the cell quality of the first cell is higher than the cell quality of the second cell by a first value, and the first value is selected to reside in the first cell, and the first value is configured by the network side or agreed by an agreement;
  • the cell quality of the first cell is lower than the cell quality of the second cell by a second value, choose to camp in the second cell, and the second value is configured by the network side or agreed by the protocol;
  • a cell with higher cell quality among the first cell and the second cell to camp on is selected.
  • the residency unit is also used to:
  • a first compensation is added to the cell quality of the first cell, and a second compensation is added to the cell quality of the second cell, where the first compensation and the second compensation are configured by the network side or agreed upon in a protocol.
  • the apparatus further comprises:
  • a determining module configured to determine the priorities of the first cell and the second cell according to the frequency priorities configured on the network side when the first cell and the second cell are deployed on different frequencies.
  • the dwell unit when all the reference signals received by the terminal are the first reference signals, the dwell unit is further used for at least one of the following:
  • the preset priority it is preferred to camp on the first cell, and the preset priority is configured by the network side or agreed upon in an agreement;
  • the cell quality of the first cell is higher than the first preset threshold, choose to camp in the first cell; or, when the cell quality of the first cell is lower than the second preset threshold, enter any
  • the cell resides in any cell camp mode, and the first preset threshold and the second preset threshold are configured or agreed by the network side;
  • the first cell with the highest cell quality to camp on is selected.
  • the residency unit is also used to:
  • a first compensation is added to the cell quality of the first cell, where the first compensation is configured by the network side or agreed in a protocol.
  • the apparatus further comprises:
  • a receiving module configured to receive first indication information from the network side before performing cell selection or reselection, where the first indication information includes at least one of the following:
  • SFN group or range of SFN
  • the SFN to which the cell belongs is the SFN to which the cell belongs.
  • the resident module is also used to:
  • the transition from camping on the second cell to camping on the first cell is performed through a cell reselection or cell selection operation.
  • the first cells when the network is deployed with a high frequency range and a low frequency range, the first cells include cells in the low frequency range, and the second cells include cells in the high frequency range;
  • the first cell includes a high-altitude platform station HAPS cell or a high-orbit satellite cell
  • the second cell includes a low-orbit satellite cell or a cell covered by a ground base station.
  • the apparatus further comprises:
  • a connection module configured to initiate random access RACH or connection establishment in the second cell after camping on the first cell or the second cell.
  • the resident module is also used to:
  • the network side instructs the terminal through a system message or a dedicated RRC message
  • the dedicated RRC message includes at least one of the following: RRC release, RRC suspend suspend message.
  • the SFN-specific reference signal and/or the cell/TRP-specific reference signal is measured, and based on the measurement result, the terminal is selected to camp in the SFN-specific cell or the cell/TRP-specific cell or TRP, so that the terminal Cell selection or cell reselection can be flexibly performed between SFN-specific cells or cell/TRP-specific cells or TRPs. Compared with the existing selection and reselection only in cells/TRP cells, it can effectively save the power of the terminal. consumption.
  • the apparatus for cell selection and reselection in this embodiment of the present application may be an apparatus, or may be a component, an integrated circuit, or a chip in a terminal.
  • the device may be a mobile terminal or a non-mobile terminal.
  • the mobile terminal may include, but is not limited to, the types of terminals listed above, and the non-mobile terminal may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television) , TV), teller machine or self-service machine, etc., which are not specifically limited in the embodiments of the present application.
  • Network Attached Storage Network Attached Storage
  • PC personal computer
  • TV television
  • teller machine or self-service machine etc.
  • the apparatus for cell selection and reselection in this embodiment of the present application may be an apparatus with an operating system.
  • the operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
  • FIG. 4 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.
  • the terminal 400 includes but is not limited to: a radio frequency unit 401, a network module 402, an audio output unit 403, an input unit 404, a sensor 405, a display unit 406, a user input unit 407, an interface unit 408, a memory 409, a processor 410 and other components .
  • the terminal 400 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 410 through a power management system, so as to manage charging, discharging, and power consumption through the power management system management and other functions.
  • a power source such as a battery
  • the terminal structure shown in FIG. 4 does not constitute a limitation on the terminal, and the terminal may include more or less components than shown, or combine some components, or arrange different components, which will not be repeated here.
  • the input unit 404 may include a graphics processor (Graphics Processing Unit, GPU) 4041 and a microphone 4042. Such as camera) to obtain still pictures or video image data for processing.
  • the display unit 406 may include a display panel 4061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 407 includes a touch panel 4071 and other input devices 4072 .
  • the touch panel 4071 is also called a touch screen.
  • the touch panel 4071 may include two parts, a touch detection device and a touch controller.
  • Other input devices 4072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which are not described herein again.
  • the radio frequency unit 401 receives the downlink data from the wireless access network side device, and then processes it to the processor 410; in addition, sends the uplink data to the wireless access network side device.
  • the radio frequency unit 401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • Memory 409 may be used to store software programs or instructions as well as various data.
  • the memory 409 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.) and the like.
  • the memory 409 may include a high-speed random access memory, and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • PROM erasable programmable read-only memory
  • Erasable PROM Erasable PROM
  • EPROM electrically erasable programmable read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory for example at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • the processor 410 may include one or more processing units; optionally, the processor 410 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly deal with wireless communications, such as baseband processors. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 410.
  • the processor 410 is configured to measure the first reference signal and/or the second reference signal
  • the processor 410 is further configured to select to camp in the first cell or the second cell according to the measurement result;
  • the first reference signal is a reference signal specific to SFN
  • the second reference signal is a reference signal specific to a cell or a transmission and reception point cell/TRP; or, the first cell is a cell specific to SFN , the second cell is a cell/TRP specific cell or TRP.
  • the relevant parameters of the first reference signal are indicated by an SFN-specific system message or a cell/TRP-specific system message
  • the relevant parameters of the second reference signal are indicated by a cell/TRP-specific system message.
  • the processor 410 is further configured to determine the cell quality of the first cell and the second cell according to the measurement result;
  • the processor 410 is further configured to select to camp on the first cell or the second cell according to the cell quality of the first cell and the second cell.
  • processor 410 is further used for at least one of the following:
  • the cell quality of the first cell is determined according to the number of beams whose beam measurement results are higher than a preset measurement threshold.
  • the processor 410 is further configured to at least one of the following:
  • a preset priority preferentially chooses to camp on the first cell, and the preset priority is configured by the network side or stipulated by a protocol;
  • a preset priority preferentially chooses to camp on the second cell, and the preset priority is configured by the network side or agreed in a protocol;
  • the cell quality of the first cell When the cell quality of the first cell is higher than the first preset threshold, select to camp on the first cell; or, when the cell quality of the first cell is lower than the second preset threshold, select to camp on staying in the second cell whose cell quality is higher than a third preset threshold, where the first preset threshold, the second preset threshold, and the third preset threshold are configured by the network side;
  • the fourth preset threshold selects camp on the second cell; or, when the cell quality of the second cell is lower than the fifth preset threshold, select to camp on stay in the first cell whose cell quality is higher than a sixth preset threshold, where the fourth preset threshold, the fifth preset threshold, and the sixth preset threshold are configured by the network side;
  • the cell quality of the first cell is higher than the cell quality of the second cell by a first value, and the first value is selected to reside in the first cell, and the first value is configured by the network side or agreed by an agreement;
  • the cell quality of the first cell is lower than the cell quality of the second cell by a second value, choose to camp in the second cell, and the second value is configured by the network side or agreed by the protocol;
  • a cell with higher cell quality among the first cell and the second cell to camp on is selected.
  • the processor 410 is further configured to:
  • a first compensation is added to the cell quality of the first cell, and a second compensation is added to the cell quality of the second cell, where the first compensation and the second compensation are configured by the network side or agreed upon in a protocol.
  • the processor 410 is further configured to determine the first cell and the second cell according to the frequency priority configured on the network side when the first cell and the second cell are deployed on different frequencies priority.
  • the processor 410 is further configured to at least one of the following:
  • the preset priority it is preferred to camp on the first cell, and the preset priority is configured by the network side or agreed upon in an agreement;
  • the cell quality of the first cell is higher than the first preset threshold, choose to camp in the first cell; or, when the cell quality of the first cell is lower than the second preset threshold, enter any
  • the cell resides in any cell camp mode, and the first preset threshold and the second preset threshold are configured or agreed by the network side;
  • the first cell with the highest cell quality to camp on is selected.
  • the processor 410 is further configured to add a first compensation to the cell quality of the first cell, where the first compensation is configured by the network side or agreed in a protocol.
  • the processor 410 is further configured to receive first indication information from the network side before performing cell selection or reselection, where the first indication information includes at least one of the following:
  • SFN group or range of SFN
  • the SFN to which the cell belongs is the SFN to which the cell belongs.
  • the processor 410 is further configured to switch from camping on the second cell to camping on the first cell through a cell reselection or cell selection operation.
  • the first cell when the network is deployed with a high frequency range and a low frequency range, the first cell includes cells in the low frequency range, and the second cell includes cells in the high frequency range;
  • the first cell includes a high-altitude platform station HAPS cell or a high-orbit satellite cell
  • the second cell includes a low-orbit satellite cell or a cell covered by a ground base station.
  • the processor 410 is further configured to initiate random access RACH or connection establishment in the second cell after camping on the first cell or the second cell.
  • the processor 410 is further configured to:
  • the network side instructs the terminal through a system message or a dedicated RRC message
  • the dedicated RRC message includes at least one of the following: RRC release, RRC suspend suspend message.
  • the embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the foregoing method for establishing a connection is implemented, and can achieve The same technical effect, in order to avoid repetition, will not be repeated here.
  • the processor is the processor in the terminal described in the foregoing embodiment.
  • the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
  • An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a terminal program or instruction, and the implementation is as described in the first aspect or to implement the various processes of the above method embodiments for establishing a connection; or for running the radio access network side device programs or instructions to implement the various processes of the above-mentioned method embodiments for establishing a connection; or for running the core network side equipment
  • the programs or instructions may implement the various processes of the above method embodiments for establishing a connection, and can achieve the same technical effect. To avoid repetition, details are not repeated here.
  • the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.
  • An embodiment of the present application further provides a program product, where the program product is stored in a non-volatile readable storage medium, and the program product is executed by at least one processor to implement each process of the foregoing method embodiment for establishing a connection , and can achieve the same technical effect, in order to avoid repetition, it is not repeated here.
  • the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation.
  • the technical solution of the present application can be embodied in the form of a software product in essence or in a part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of this application.
  • a storage medium such as ROM/RAM, magnetic disk, CD-ROM

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Abstract

本申请公开了一种小区选择重选方法、装置、终端及可读存储介质。该方法包括:对第一参考信号和/或第二参考信号进行测量;根据测量结果,选择驻留在第一小区或者第二小区;其中,第一参考信号为单频网SFN特有的参考信号,第二参考信号为小区或传输接收点cell/TRP特有的参考信号,第一小区为SFN特有的小区,第二小区为cell/TRP特有的小区或TRP。

Description

小区选择重选方法、装置、终端及可读存储介质
相关申请的交叉引用
本申请主张在2020年9月29日在中国提交的中国专利申请号No.202011053366.7的优先权,其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域,具体涉及一种小区选择重选方法、装置、终端及可读存储介质。
背景技术
随着未来通信系统部署频段越来越高,一个小区(cell)或者传输接收点(transmission reception point,TRP)的覆盖范围越来越小。同时,未来移动通信系统支持的应用场景也越来越丰富,包括更多的高速场景。这就带来了频繁的移动性(包括连接态(connected mode)的切换(handover)和空闲态(idle)或非激活态(inactive mode)的小区选择和重选(cell selection/reselection))。从而引入更多的终端测量,这会增大终端的耗电。
发明内容
本申请实施例的目的是提供一种小区选择重选方法、装置、终端及可读存储介质,能够解决终端进行小区选择和重选时耗电量较大的问题。
为了解决上述技术问题,本申请是这样实现的:
第一方面,提供了一种小区选择重选方法,应用于终端,该方法包括:
对第一参考信号和/或第二参考信号进行测量;
根据测量结果,选择驻留在第一小区或者第二小区;
其中,所述第一参考信号为单频网SFN特有的参考信号,所述第二参考信号为小区或传输接收点cell/TRP特有的参考信号,所述第一小区为SFN特有的小区,所述第二小区为cell/TRP特有的小区或TRP。
第二方面,提供了一种小区选择重选装置,应用于终端,包括:
测量模块,用于对第一参考信号和/或第二参考信号进行测量;
驻留模块,用于根据测量结果,选择驻留在第一小区或者第二小区;
其中,所述第一参考信号为单频网SFN特有的参考信号,所述第二参考信号为小区或传输接收点cell/TRP特有的参考信号,所述第一小区为SFN特有的小区,所述第二小区为cell/TRP特有的小区或TRP。
第三方面,提供了一种终端,包括处理器,存储器及存储在所述存储器上并可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第一方面所述的小区选择重选方法的步骤。
第四方面,提供了一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如第一方面所述的小区选择重选方法的步骤。
第五方面,提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行网络侧设备程序或指令,实现如第一方面所述的小区选择重选方法的步骤。
在本申请实施例中,对SFN特有的参考信号和/或cell/TRP特有的参考信号进行测量,并基于测量结果选驻留在SFN特有的小区或者cell/TRP特有的小区或TRP,这样终端可以灵活在SFN特有的小区或者cell/TRP特有的小区或TRP之间进行小区选择或小区重选,相比于现有只在cell/TRP的小区中进行选择重选,能够有效节省终端的功耗。
附图说明
图1a为一种SFN架构示意图;
图1b为一种密集网络架构示意图;
图1c为竞争的随机接入流程示意图;
图1d为非竞争的随机接入流程示意图;
图2为本申请实施例提供的小区选择重选方法的流程示意图;
图3为本申请实施例提供的小区选择重选装置的结构示意图;
图4为本申请实施例提供的终端结构示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请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申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,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,都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施,且“第一”、“第二”所区别的对象通常为一类,并不限定对象的个数,例如第一对象可以是一个,也可以是多个。此外,说明书以及权利要求中“和/或”表示所连接对象的至少其中之一,字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是,本申请实施例所描述的技术不限于长期演进型(Long Term Evolution,LTE)/LTE的演进(LTE-Advanced,LTE-A)系统,还可用于其他无线通信系统,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access,SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用,所描述的技术既可用于以上提及的系统和无线电技术,也可用于其他系统和无线电技术。然而,以下描述出于示例目的描述了新空口(New Radio,NR)系统,并且在以下大部分描述中使用NR术语,尽管这些技术也可应用于NR系统应用以外的应用,如第6代(6 th Generation,6G)通信系统。
本申请实施例中,终端也可以称作终端设备或者用户终端(User Equipment,UE),终端可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant,PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer,UMPC)、移动上网装置(Mobile Internet Device,MID)、 可穿戴式设备(Wearable Device)或车载设备(Vehicle User Equipment,VUE)、行人终端(Pedestrian User Equipment,PUE)等终端侧设备,可穿戴式设备包括:手环、耳机、眼镜等。需要说明的是,在本申请实施例并不限定终端的具体类型。网络侧可以是基站,其中,基站可被称为节点B、演进节点B、接入点、基收发机站(Base Transceiver Station,BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set,BSS)、扩展服务集(Extended Service Set,ESS)、B节点、演进型B节点(eNB)、家用B节点、家用演进型B节点、WLAN接入点、WiFi节点、发送接收点(Transmitting Receiving Point,TRP)或所述领域中其他某个合适的术语,只要达到相同的技术效果,所述基站不限于特定技术词汇,需要说明的是,在本申请实施例中仅以NR系统中的基站为例,但是并不限定基站的具体类型。
为更好理解本申请提供的方案,首先对以下内容进行描述:
单频网(Single-Frequency Network,SFN)介绍:
SFN传输方案:多个小区或多个发送点发送同样的信号,不同小区间没有同频干扰,且多个信号可提升信号与干扰加噪声比(Signal to Interference plus Noise Ratio,SINR)、传输质量和覆盖效果。组成SFN的多个小区可以共用一个cell ID,即超级小区(super cell)的ID。多个小区可以通过SFN传输的方式进行信号的发送,例如其中每个小区以宽波束发送,某一时刻终端可以接收到多个小区发送的宽波束,从而获得分集增益。SFN传输方案中,终端不需要在小区间频繁的进行小区重选或者切换。
参加图1a,图中示出一种有7个小区构成的SFN super cell。
IDLE或INACTIVE UE移动性:
IDLE或INACTIVE UE在移动的过程中,网络提供各频点的优先级。
对于同频邻小区,如果,目标(或邻居)小区的测量评估值(根据目标(或邻居)小区的测量结果加入偏移量后计算得出)比服务小区的测量评估值(根据服务小区的测量结果加入偏移量后计算得出)好,且持续一段时长(如,网络配置的时长),且UE在当前服务小区驻留时间超过一段时长(如,协议约定的1s),则UE重选到该目标(或邻居)小区。
对于高优先级异频(即inter-frequency)或异技术(即inter-RAT)邻小区, 如果,目标(或邻居)小区的测量评估值超过门限值,且持续一段时长(如,网络配置的时长),则UE重选到该目标(或邻居)小区。
对于低优先级异频(即inter-frequency)或异技术(即inter-RAT)邻小区,如果,目标(或邻居)小区的测量评估值大于门限值且当前服务小区的测量评估值小于门限值,且持续一段时长(如,网络配置的时长),则UE重选到该目标(或邻居)小区。
对于异频(即inter-frequency)或异技术(即inter-RAT)邻小区,在目标(或邻居)频点优先级与当前服务(或驻留)频点优先级相同的时候,小区重选的方法与同频小区的小区重选方法。
IDLE/INACTIVE UE通过接收网络侧发送的寻呼消息,触发连接建立过程,从而进行数据的收发。
Cell free或密集网络:
参见图1b,低频(例如FR1)小区相比高频(例如FR2)小区覆盖范围大。
终端在FR1覆盖范围内移动时,可能会不断更换FR2小区,但是FR1小区不更换。
终端在初始激活一个FR2小区或者切换FR2小区时,需要不断测量各个波束的信号质量,由于波束数量较多,会导致过长的小区激活时间,或者小区切换时间。例如,在满足一定条件时,测量时间可以达到秒级别,如下:
8ms+24*T rs+T uncertainty_MAC+T L1-RSRP,measure+T L1-RSRP,report+T HARQ+T FineTiming
上述较长的测量时间同时会导致UE功耗较大。
集中控制单元(Centralized Unit,CU)、分布式单元(Distributed Unit,DU)分离简介:
在5G系统中,基站(gNB)可以将其协议栈实体分别放在不同的控制单元上。如,无线资源控制(Radio Resource Control,RRC)和分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)放置在CU上,无线链路层控制(Radio Link Control,RLC)和媒体介入控制层(Media Access Control,MAC)/端口物理层(Physical Layer,PHY)放置在DU上。其中,CU和DU有一定的无线资源的管理权限。如,CU可以通过RRC消息进行其下连接的 小区的管理,DU可以通过MAC CE消息进行其下连接的小区的管理。多个DU与1个CU连接,而CU则与核心网以及其他CU连接。
终端系统接入基本流程:
1.初始搜网:包括同步信号块(Synchronization Signal Block,SSB)同步和系统信息的接收。具体地,先接收主同步信号(Primary Synchronization Signals,PSS),再接收辅同步信号(Secondary Synchronization Signals,SSS),再接收物理广播信道(Physical Broadcast Channel,PBCH):获取SSB index,以及PBCH RMRS和主信息块(Master information Block,MIB)中的信息。
2.根据上述获取到的信息再接收广播的系统信息(system information,SI),其中包括接入系统所需信息。
3.根据上述所获得的系统接入所需信息进行随机接入。
随机接入(RACH)过程:
目前RACH过程分成竞争的随机接入和非竞争的随机接入过程。竞争的随机接入过程为4步为message 1–message 4四步接入,如图1c所示,非竞争的只需要message 1和message 2两步接入,如图1d所示。
message 1-4:
竞争的随机接入和非竞争的随机接入的message 2都是发送随机接入响应(Random Access Response,RAR)。UE在RAR窗口内监听对应随机接入无线网络临时标识(Radio access Radio Network Temporary Identity,RA-RNTI)的RAR。
由于竞争的随机接入存在UE在同样的PRACH资源发送同样的前导码(preamble)的问题,因此在接收完message 2后还需要在根据在message里的UL grant发送message 3,并且UE会在message 3上携带UE的标识,在message 3发送时同时启动竞争解决timer。在竞争解决timer没超时前如果收到基站发送的message 4这UE竞争解决成功。message中基站会携带UE标识下来。UE根据message 4中携带的UE标识就可以判断是不是自己的message 4,从而判断是否竞争成功。
进一步,为了缩短接入系统时延,引用了2-step RACH:即包括两个步骤的RACH过程:分别是终端向网络侧发送message A,再接收网络侧下发的 message B。其中的message A包括上述message 1或message 1与message 3的功能,message B包括上述message 2或message 2与message 4的功能。
小区选择与重选:
1、初始小区选择过程(UE并不事先知道哪一个RF channel是NR的载波)
UE根据自己的能力,逐个扫描(scan)所有的RF channel(扫描顺序协议未规定),寻找合适(suitable)的NR小区;在每一扫描的载频,UE仅需要搜索信号质量最强的小区;一旦找到一个合适的小区,则选择该小区进行驻留。并停止初始小区选择过程,即未扫描的RF channel也不用再扫描了。
所谓合适的小区至少满足以下所有条件:
(1)小区的信号质量满足预设条件;所述信号质量包括:参考信号接收功率(Reference Signal Receiving Power,RSRP)和/或参考信号接收质量(Reference Signal Receiving Quality,RSRQ);
(2)UE可以获得必要的系统信息(至少包括MIB和SIB1);
(3)系统信息中的小区接入限制信息元素(cellbar IE)(可以取值为barred和notBarred)设置为notBarred,即小区未被禁止附着或接入。
2、小区重选过程
UE基于网络提供的频点优先级的顺序从高优先级频点开始依次评估每一个频点是否有合适的重选目标小区,仅有suitable cell可以作为重选的目标小区。
不同的频点可以被配置为相同或不同的频点优先级。
具体来说:
当UE驻留在服务小区,如果有更高优先级的NR或LTE的频点上的小区满足在一段时间Treselection RAT内小区信号质量Squal>门限值Thresh X,, HighQ,或者
如果有更高优先级的NR或其他RAT的频点上的小区满足在一段时间TreselectionRAT内信号强度Srxlev>门限值Thresh X,HighP且UE在当前服务小区已经驻留超过一秒,那么发起向更高优先级的NR或其他RAT的频点上的小区的重选过程。
3、合适的小区(suitable cell)
合适的小区是指UE可以驻留并获得正常服务的小区。UE需要有有效的USIM,且上述合适的小区至少符合以下特征:
(1)该小区属于UE以下PLMN:UE选择的PLMN(Selected PLMN)或注册的PLMN(Registered PLMN)或等价PLMN列表(Equivalent PLMN list)中的一个PLMN。
(2)小区满足小区选择准则;
(3)小区没有被禁止附着(bar);
(4)小区的广播的跟踪区域(Tracking Area,TA)信息不属于禁止的TA区域(list of“Forbidden Tracking Areas”)。
下面结合附图,通过具体的实施例及其应用场景对本申请实施例提供的小区选择重选方法进行详细地说明。
参见图2,本申请实施例提供一种小区选择重选方法,即小区选择和/或小区重选方法,应用于终端,该方法包括:
步骤201:第一参考信号和/或第二参考信号进行测量;
步骤202:根据测量结果,选择驻留在第一小区或者第二小区;
在本申请实施例中,第一参考信号为SFN特有的(可称为SFN specific或者SFN super cell specific)参考信号,第二参考信号为cell/TRP特有的(可称为cell/TRP specific)参考信号,相应地,第一小区为SFN特有的(可称为SFN layer)小区,第二小区为cell/TRP特有的(可称为cell/TRP layer)小区。
具体地,在实际部署时,SFN是一个super cell的范围,它包括若干个cell或TRP,通常称SFN super cell为SFN layer。super cell或者SFN layer对应的小区为SFN特有的(specific)小区;而SFN范围内包括的若干个cell或TRP,为cell/TRP layer。此layer对应的cell/TRP为cell/TRP特有的(specific)小区或TRP。相应的,在SFN layer上的参考信号(RS)、系统消息(SI)、寻呼消息(paging)等,都称为SFN特有的RS、SI、paging等。在cell/TRP layer的RS、SI、paging等,都称为cell/TRP特有的RS、SI、paging等。
首先对上述部分术语进行解释:
cell/TRP specific:即每个cell/TRP对应的相关配置是独立的。在cell/TRP 范围内的配置是一样的。
SFN/super cell specific:即每个SFN或super cell对应的相关配置是独立的。在SFN范围内或super cell范围内的配置是一样。
需要说明的是,上述第一参考信号和第二参考信号的种类可以包括多种,例如:参考信号可以是SSB,即SFN specific SSB和cell/TRP specific SSB,参考信号也可以是信道状态信息参考信号(Channel-State Information reference Signal,CSI-RS)、小区参考信号(Cell Reference Signal,CRS)、探测参考信号(Sounding Reference Signal,SRS)、解调参考信号(Demodulation Reference Signal,DMRS)等各类参考信号。
在本申请实施例中,对SFN特有的参考信号和/或cell/TRP特有的参考信号进行测量,并基于测量结果选驻留在SFN特有的小区或者cell/TRP特有的小区或TRP,这样终端可以灵活在SFN特有的小区或者cell/TRP特有的小区或TRP之间进行小区选择或小区重选,相比于现有只在cell/TRP的小区中进行选择重选,能够有效节省终端的功耗。
在一些实施方式中,所述第一参考信号的相关参数通过SFN特有的系统消息(SFN specific SI)指示或cell/TRP特有的系统消息(cell/TRP specific SI)指示;第二参考信号的相关参数通过cell/TRP特有的系统消息指示。
需要说明的是,上述参考信号的相关参数可以包括:同步信号块的测量时间配置(SS block based RRM measurement timing configuration,SMTC)、同步栅格(sync raster),SSB标识(ID)等,本申请实施例对该相关参数的具体类型不做限定。
在一些实施方式中,本方法还包括:终端通过小区重选或者小区选择操作,从驻留在第二小区变换到驻留在第一小区,即从camp on cell/TRP layer cell变换到camp on SFN layer super cell。
在一些实施方式中,当网络部署有高频范围和低频范围(high-frequency and low frequency layers)时,第一小区中包括低频范围内的小区,第二小区中包括高频范围内的小区;或者,当网络包括卫星通信网络((satellite or HAPS))时,所述第一小区中包括高空平台站(High Altitude Platform Station,HAPS)小区或高轨卫星小区,第二小区中包括低轨卫星小区或地面基站覆盖 的小区。
进一步地,在一些实施方式中,本方法还包括:当驻留在第一小区或第二小区后,在第二小区发起随机接入(RACH)或连接建立。
具体地,在一些实施方式中,上述根据测量结果,选择驻留在第一小区或者第二小区,包括如下步骤:
根据测量结果,确定第一小区和第二小区的小区质量;
根据第一小区和第二小区的小区质量,选择驻留在第一小区或者第二小区;
进一步地,通过以下至少一种方式来确定第一小区和第二小区的小区质量:
(1)根据波束测量结果的平均值,确定第一小区的小区质量;
(2)根据预设数量个波束测量结果的平均值,确定第一小区的小区质量;
(3)根据高于预设测量门限的波束测量结果的平均值,确定所述第一小区的小区质量;
(4)根据最高的波束测量结果,确定所述第一小区的小区质量;
(5)根据高于预设测量门限的N个波束的波束测量结果的平均值,确定所述第一小区的小区质量;
(6)根据波束测量结果高于预设测量门限的波束的数量,确定所述第一小区的小区质量。
其中的N为协议约定,或者网络侧配置。
具体地,确定小区质量可以是上述多种方式中的其中一种,或者是两种或者两种以上,可以同时通过比较多个维度的小区质量来确定驻留的小区。比如,通过波束测量结果的平均值,和波束测量结果高于预设测量门限的波束的数量,两个维度来比较小区的质量来确定驻留的小区。其它的类似。
另一个方面,也可以在不同的条件下使用不同的方式来比较小区的质量。具体地,当没有波束测量结果高于预设门限时,则使用最高的波束测量结果来确定所述小区的质量;当有多个波束测量结果的高于预设门限时,则使用高于预设门限的预设个波束测量结果的平均值来确定所述小区的质量。
其中的测量结果包括如下至少一项:RSRP,RSRQ,SINR,误块率(Block  Error Rate,BLER),接收的信号强度指示(Received Signal Strength Indication,RSSI)。
进一步地,在根据第一小区和第二小区的小区质量,选择驻留在第一小区或者第二小区时,具体可分为三种情况:
情况一、终端接收的参考信号包括第一参考信号和第二参考信号,即系统包括SFN specific参考信号和cell/TRP specific参考信号;
情况二、终端接收的参考信号全部为第一参考信号,即系统包括所有的参考信号都是SFN specific参考信号;
情况三、终端接收的参考信号全部为第二参考信号,即系统包括所有的参考信号都是cell/TRP specific参考信号;
其中,情况三可以采用现有技术中的流程实现,在此不再赘述。
针对情况一,当终端接收的参考信号包括第一参考信号和第二参考信号时,选择驻留在第一小区或者第二小区的方式包括以下至少一项:
(1)根据预设优先级,优先选择驻留在第一小区,即为SFN layer配置更高的优先级,该预设优先级由网络侧配置或协议约定;
(2)根据预设优先级,优先选择驻留在第二小区,即为cell/TRP layer配置更高的优先级,该预设优先级由网络侧配置或协议约定;
(3)当第一小区的小区质量高于第一预设门限(即SFN layer super cell满足suitable cell)时,选择驻留在第一小区;或者,当第一小区的小区质量低于第二预设门限时,选择驻留在小区质量高于第三预设门限的第二小区,第一预设门限、第二预设门限、第三预设门限由网络侧配置;
需要说明的是,第三预设门限值可以与第一预设门限值相同,第三预设门限值也可以与第一预设门限值不同。
(4)当第二小区的小区质量高于第四预设门限(即cell/TRP layer cell满足suitable cell)时,选择驻留在第二小区;或者,当第二小区的小区质量低于第五预设门限时,选择驻留在小区质量高于第六预设门限的第一小区,第四预设门限、第五预设门限、第六预设门限由网络侧配置;
需要说明的是,第六预设门限值可以与第四预设门限值相同,第六预设门限值也可以与第四预设门限值不同。
(5)第一小区的小区质量比第二小区的小区质量高于第一数值,选择驻留在第一小区,第一数值由网络侧配置或协议约定;
(6)第一小区的小区质量比所第二小区的小区质量低于第二数值,选择驻留在第二小区,第二数值由网络侧配置或协议约定;
需要说明的是,上述第一数值与第二数值可以相同,也可以不同。
(7)选择驻留在第一小区和第二小区中小区质量更高的小区,即直接比较SFN layer super cell和cell/TRP layer cell的小区质量好坏,选择最优的一个cell来进行camp。
进一步地,在选择驻留在第一小区和第二小区中小区质量更高的小区之前时,本方法还包括:
(a)为第一小区的小区质量增加第一补偿,第一补偿由网络侧配置或协议约定;
(b)为第一小区的小区质量增加第一补偿,为第二小区的小区质量增加第二补偿,第一补偿和第二补偿由网络侧配置或协议约定;
需要说明的是,上述第一补偿和第二补偿的相同,也可以不同。
进一步地,本申请实施例还包括一种通过网络侧来实现第一小区和第二小区选择的方式:
当第一小区和第二小区部署在不同的频率(可以为inter-frequency,或者inter-RAT frequency)时,根据网络侧配置的频率优先级确定第一小区和第二小区的优先级。
针对上述小区选择重选的方法应用于不同的场景的情况:
(1)当小区选择时,优先选择SFN小区;
(2)当小区选择时,优先选择cell/TRP小区,再进行小区重选时,在cell/TRP小区和SFN layer super cell中选择SFN layer super cell驻留。
针对情况二,当终端接收的参考信号全部为第一参考信号时,选择驻留在第一小区或者第二小区的方式包括以下至少一项:
(1)根据预设优先级,优先选择驻留在第一小区,预设优先级由网络侧配置或协议约定;
(2)当第一小区的小区质量高于第一预设门限(即SFN layer super cell 满足suitable cell)时,选择驻留在第一小区;或者,当第一小区的小区质量低于第二预设门限时,进入任意小区驻留(any cell camp)模式,第一预设门限和第二预设门限由网络侧配置或协议约定;
(3)选择驻留在小区质量最高的第一小区,即直接比较SFN layer super cell的小区质量好坏,选择最优的一个cell来进行camp。
进一步地,在选择驻留在小区质量最高的第一小区时,本方法还包括:
为第一小区的小区质量增加第一补偿,该第一补偿由网络侧配置或协议约定。
可选地,在一些实施方式中,本方法还包括:
在进行小区选择或重选之前,从网络侧接收第一指示信息,该第一指示信息包括以下至少一项:
SFN标识(ID)或索引(index);
SFN组(group)或者SFN的范围;
SFN包括的cell/TRP;
小区是否支持SFN layer;
小区所属SFN。
进一步地,选择驻留在第一小区或者第二小区,还包括:
当终端支持第一小区时,优先选择驻留在第一小区,即当终端支持SFN layer super cell,按上述规则之一,比如SFN layer super cell优先;
或者,当网络侧指示支持第一小区时,优先选择驻留在第一小区,即当网络指示支持SFN super layer时,按上述规则之一,比如优先选择SFN layer super cell;
或者,当网络侧指示终端驻留在第一小区或者优先驻留在第一小区时,优先选择驻留在第一小区,即当网络向终端发送指示终端驻留在SFN layer super cell或者优先驻留时,按上述规则之一,比如优先选择SFN layer super cell;
在一些实施方式中,上述网络侧通过系统消息,或者专用的RRC消息指示所述终端,所述专用的RRC消息包括以下至少一项:RRC释放(release),RRC中止(suspend)消息。
需要说明的是,本申请实施例提供的小区选择重选方法,执行主体可以为小区选择重选装置,或者,该小区选择重选装置中的用于执行小区选择重选方法的控制模块。本申请实施例中以小区选择重选装置执行小区选择重选方法为例,说明本申请实施例提供的小区选择重选装置。
参见图3,本申请实施例提供一种小区选择重选装置300,应用于终端,包括:
测量模块301,用于对第一参考信号和/或第二参考信号进行测量;
驻留模块302,用于根据测量结果,选择驻留在第一小区或者第二小区;
其中,所述第一参考信号为单频网SFN特有的参考信号,所述第二参考信号为小区或传输接收点cell/TRP特有的参考信号,所述第一小区为SFN特有的小区,所述第二小区为cell/TRP特有的小区或TRP。
在一些实施方式中,所述第一参考信号的相关参数通过SFN特有的系统消息指示或cell/TRP特有的系统消息指示;或者,所述第二参考信号的相关参数通过cell/TRP特有的系统消息指示。
在一些实施方式中,所述驻留模块,包括:
确定单元,用于根据测量结果,确定所述第一小区和所述第二小区的小区质量;
驻留单元,用于根据所述第一小区和所述第二小区的小区质量,选择驻留在第一小区或者第二小区。
在一些实施方式中,所述确定单元进一步地用于以下至少一项:
根据波束测量结果的平均值,确定所述第一小区的小区质量;
根据预设数量个波束测量结果的平均值,确定所述第一小区的小区质量;
根据高于预设测量门限的波束测量结果的平均值,确定所述第一小区的小区质量;
根据最高的波束测量结果,确定所述第一小区的小区质量;
根据高于预设测量门限的N个波束的波束测量结果的平均值,确定所述第一小区的小区质量;
根据波束测量结果高于预设测量门限的波束的数量,确定所述第一小区的小区质量。
在一些实施方式中,当所述终端接收的参考信号包括第一参考信号和第二参考信号时,所述驻留单元进一步用于以下至少一项:
根据预设优先级,优先选择驻留在所述第一小区,所述预设优先级由网络侧配置或协议约定;
根据预设优先级,优先选择驻留在所述第二小区,所述预设优先级由网络侧配置或协议约定;
当所述第一小区的小区质量高于第一预设门限时,选择驻留在所述第一小区;或者,当所述第一小区的小区质量低于第二预设门限时,选择驻留在小区质量高于第三预设门限的所述第二小区,所述第一预设门限、所述第二预设门限、所述第三预设门限由网络侧配置;
当所述第二小区的小区质量高于第四预设门限时,选择驻留在所述第二小区;或者,当所述第二小区的小区质量低于第五预设门限时,选择驻留在小区质量高于第六预设门限的所述第一小区,所述第四预设门限、所述第五预设门限、所述第六预设门限由网络侧配置;
所述第一小区的小区质量比所述第二小区的小区质量高于第一数值,选择驻留在所述第一小区,所述第一数值由网络侧配置或协议约定;
所述第一小区的小区质量比所第二小区的小区质量低于第二数值,选择驻留在所述第二小区,所述第二数值由网络侧配置或协议约定;
选择驻留在所述第一小区和所述第二小区中小区质量更高的小区。
在一些实施方式中,所述驻留单元还用于:
为所述第一小区的小区质量增加第一补偿,所述第一补偿由网络侧配置或协议约定;
或者,
为所述第一小区的小区质量增加第一补偿,为所述第二小区的小区质量增加第二补偿,所述第一补偿和所述第二补偿由网络侧配置或协议约定。
在一些实施方式中,所述装置还包括:
确定模块,用于当所述第一小区和所述第二小区部署在不同的频率时,根据网络侧配置的频率优先级确定所述第一小区和所述第二小区的优先级。
在一些实施方式中,当所述终端接收的参考信号全部为所述第一参考信 号时,所述驻留单元进一步用于以下至少一项:
根据预设优先级,优先选择驻留在所述第一小区,所述预设优先级由网络侧配置或协议约定;
当所述第一小区的小区质量高于第一预设门限时,选择驻留在所述第一小区;或者,当所述第一小区的小区质量低于第二预设门限时,进入任意小区驻留any cell camp模式,所述第一预设门限和所述第二预设门限由网络侧配置或协议约定;
选择驻留在小区质量最高的所述第一小区。
在一些实施方式中,所述驻留单元还用于:
为所述第一小区的小区质量增加第一补偿,所述第一补偿由网络侧配置或协议约定。
在一些实施方式中,所述装置还包括:
接收模块,用于在进行小区选择或重选之前,从网络侧接收第一指示信息,所述第一指示信息包括以下至少一项:
SFN标识或索引;
SFN组或者SFN的范围;
SFN包括的cell/TRP;
小区是否支持SFN layer;
小区所属SFN。
在一些实施方式中,所述驻留模块还用于:
通过小区重选或者小区选择操作,从驻留在所述第二小区变换到驻留在所述第一小区。
在一些实施方式中,当网络部署有高频范围和低频范围时,所述第一小区中包括所述低频范围内的小区,所述第二小区中包括所述高频范围内的小区;
或者,
当网络包括卫星通信网络时,所述第一小区中包括高空平台站HAPS小区或高轨卫星小区,所述第二小区中包括低轨卫星小区或地面基站覆盖的小区。
在一些实施方式中,所述装置还包括:
连接模块,用于当驻留在所述第一小区或所述第二小区后,在所述第二小区发起随机接入RACH或连接建立。
在一些实施方式中,所述驻留模块还用于:
当所述终端支持所述第一小区时,优先选择驻留在所述第一小区;
或者,
当网络侧指示支持所述第一小区时,优先选择驻留在所述第一小区;
或者,
当网络侧指示所述终端驻留在所述第一小区或者优先驻留在所述第一小区时,优先选择驻留在所述第一小区;
在一些实施方式中,所述网络侧通过系统消息,或者专用的RRC消息指示所述终端,所述专用的RRC消息包括以下至少一项:RRC释放release,RRC中止suspend消息。
在本申请实施例中,对SFN特有的参考信号和/或cell/TRP特有的参考信号进行测量,并基于测量结果选驻留在SFN特有的小区或者cell/TRP特有的小区或TRP,这样终端可以灵活在SFN特有的小区或者cell/TRP特有的小区或TRP之间进行小区选择或小区重选,相比于现有只在cell/TRP的小区中进行选择重选,能够有效节省终端的功耗。
本申请实施例中的小区选择重选装置可以是装置,也可以是终端中的部件、集成电路、或芯片。该装置可以是移动终端,也可以为非移动终端。示例性的,移动终端可以包括但不限于上述所列举的终端的类型,非移动终端可以为服务器、网络附属存储器(Network Attached Storage,NAS)、个人计算机(personal computer,PC)、电视机(television,TV)、柜员机或者自助机等,本申请实施例不作具体限定。
本申请实施例中的小区选择重选装置可以为具有操作系统的装置。该操作系统可以为安卓(Android)操作系统,可以为ios操作系统,还可以为其他可能的操作系统,本申请实施例不作具体限定。
图4为实现本申请实施例的一种终端的硬件结构示意图。
该终端400包括但不限于:射频单元401、网络模块402、音频输出单元 403、输入单元404、传感器405、显示单元406、用户输入单元407、接口单元408、存储器409、以及处理器410等部件。
本领域技术人员可以理解,终端400还可以包括给各个部件供电的电源(比如电池),电源可以通过电源管理系统与处理器410逻辑相连,从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图4中示出的终端结构并不构成对终端的限定,终端可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置,在此不再赘述。
应理解的是,本申请实施例中,输入单元404可以包括图形处理器(Graphics Processing Unit,GPU)4041和麦克风4042,图形处理器4041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元406可包括显示面板4061,可以采用液晶显示器、有机发光二极管等形式来配置显示面板4061。用户输入单元407包括触控面板4071以及其他输入设备4072。触控面板4071,也称为触摸屏。触控面板4071可包括触摸检测装置和触摸控制器两个部分。其他输入设备4072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆,在此不再赘述。
本申请实施例中,射频单元401将来自无线接入网侧设备的下行数据接收后,给处理器410处理;另外,将上行的数据发送给无线接入网侧设备。通常,射频单元401包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器409可用于存储软件程序或指令以及各种数据。存储器409可主要包括存储程序或指令区和存储数据区,其中,存储程序或指令区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外,存储器409可以包括高速随机存取存储器,还可以包括非易失性存储器,其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。
处理器410可包括一个或多个处理单元;可选的,处理器410可集成应用处理器和调制解调处理器,其中,应用处理器主要处理操作系统、用户界面和应用程序或指令等,调制解调处理器主要处理无线通信,如基带处理器。可以理解的是,上述调制解调处理器也可以不集成到处理器410中。
其中,处理器410,用于对第一参考信号和/或第二参考信号进行测量;
处理器410,还用于根据测量结果,选择驻留在第一小区或者第二小区;
其中,所述第一参考信号为单频网SFN特有的参考信号,所述第二参考信号为小区或传输接收点cell/TRP特有的参考信号;或者,所述第一小区为SFN特有的小区,所述第二小区为cell/TRP特有的小区或TRP。
可选地,所述第一参考信号的相关参数通过SFN特有的系统消息指示或cell/TRP特有的系统消息指示,所述第二参考信号的相关参数通过cell/TRP特有的系统消息指示。
可选地,处理器410,还用于根据测量结果,确定所述第一小区和所述第二小区的小区质量;
处理器410,还用于根据所述第一小区和所述第二小区的小区质量,选择驻留在第一小区或者第二小区。
可选地,处理器410,还用于以下至少一项:
根据波束测量结果的平均值,确定所述第一小区的小区质量;
根据预设数量个波束测量结果的平均值,确定所述第一小区的小区质量;
根据高于预设测量门限的波束测量结果的平均值,确定所述第一小区的小区质量;
根据最高的波束测量结果,确定所述第一小区的小区质量;
根据高于预设测量门限的N个波束的波束测量结果的平均值,确定所述第一小区的小区质量;
根据波束测量结果高于预设测量门限的波束的数量,确定所述第一小区的小区质量。
可选地,当所述终端接收的参考信号包括第一参考信号和第二参考信号时,处理器410,还用于以下至少一项:
根据预设优先级,优先选择驻留在所述第一小区,所述预设优先级由网 络侧配置或协议约定;
根据预设优先级,优先选择驻留在所述第二小区,所述预设优先级由网络侧配置或协议约定;
当所述第一小区的小区质量高于第一预设门限时,选择驻留在所述第一小区;或者,当所述第一小区的小区质量低于第二预设门限时,选择驻留在小区质量高于第三预设门限的所述第二小区,所述第一预设门限、所述第二预设门限、所述第三预设门限由网络侧配置;
当所述第二小区的小区质量高于第四预设门限时,选择驻留在所述第二小区;或者,当所述第二小区的小区质量低于第五预设门限时,选择驻留在小区质量高于第六预设门限的所述第一小区,所述第四预设门限、所述第五预设门限、所述第六预设门限由网络侧配置;
所述第一小区的小区质量比所述第二小区的小区质量高于第一数值,选择驻留在所述第一小区,所述第一数值由网络侧配置或协议约定;
所述第一小区的小区质量比所第二小区的小区质量低于第二数值,选择驻留在所述第二小区,所述第二数值由网络侧配置或协议约定;
选择驻留在所述第一小区和所述第二小区中小区质量更高的小区。
可选地,处理器410,还用于:
为所述第一小区的小区质量增加第一补偿,所述第一补偿由网络侧配置或协议约定;
或者,
为所述第一小区的小区质量增加第一补偿,为所述第二小区的小区质量增加第二补偿,所述第一补偿和所述第二补偿由网络侧配置或协议约定。
可选地,处理器410,还用于当所述第一小区和所述第二小区部署在不同的频率时,根据网络侧配置的频率优先级确定所述第一小区和所述第二小区的优先级。
可选地,当所述终端接收的参考信号全部为所述第一参考信号时,处理器410,还用于以下至少一项:
根据预设优先级,优先选择驻留在所述第一小区,所述预设优先级由网络侧配置或协议约定;
当所述第一小区的小区质量高于第一预设门限时,选择驻留在所述第一小区;或者,当所述第一小区的小区质量低于第二预设门限时,进入任意小区驻留any cell camp模式,所述第一预设门限和所述第二预设门限由网络侧配置或协议约定;
选择驻留在小区质量最高的所述第一小区。
可选地,处理器410,还用于为所述第一小区的小区质量增加第一补偿,所述第一补偿由网络侧配置或协议约定。
可选地,处理器410,还用于在进行小区选择或重选之前,从网络侧接收第一指示信息,所述第一指示信息包括以下至少一项:
SFN标识或索引;
SFN组或者SFN的范围;
SFN包括的cell/TRP;
小区是否支持SFN layer;
小区所属SFN。
可选地,处理器410,还用于通过小区重选或者小区选择操作,从驻留在所述第二小区变换到驻留在所述第一小区。
可选地,当网络部署有高频范围和低频范围时,所述第一小区中包括所述低频范围内的小区,所述第二小区中包括所述高频范围内的小区;
或者,
当网络包括卫星通信网络时,所述第一小区中包括高空平台站HAPS小区或高轨卫星小区,所述第二小区中包括低轨卫星小区或地面基站覆盖的小区。
可选地,处理器410,还用于当驻留在所述第一小区或所述第二小区后,在所述第二小区发起随机接入RACH或连接建立。
可选地,处理器410,还用于:
当所述终端支持所述第一小区时,优先选择驻留在所述第一小区;
或者,
当网络侧指示支持所述第一小区时,优先选择驻留在所述第一小区;
或者,
当网络侧指示所述终端驻留在所述第一小区或者优先驻留在所述第一小区时,优先选择驻留在所述第一小区;
可选地,所述网络侧通过系统消息,或者专用的RRC消息指示所述终端,所述专用的RRC消息包括以下至少一项:RRC释放release,RRC中止suspend消息。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述建立连接的方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质,包括计算机可读存储介质,如计算机只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等。
本申请实施例另提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行终端程序或指令,实现如第一方面所述的方法,或实现上述建立连接的方法实施例的各个过程;或者用于运行无线接入网侧设备程序或指令,实现上述建立连接的方法实施例的各个过程;或者用于运行核心网侧设备程序或指令或,实现上述建立连接的方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
本申请实施例另提供了一种程序产品,所述程序产品存储在非易失性的可读存储介质,所述程序产品被至少一个处理器执行以实现上述建立连接的方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方 法、物品或者装置中还存在另外的相同要素。此外,需要指出的是,本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能,还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能,例如,可以按不同于所描述的次序来执行所描述的方法,并且还可以添加、省去、或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式,均属于本申请的保护之内。

Claims (35)

  1. 一种小区选择重选方法,应用于终端,所述方法包括:
    对第一参考信号和/或第二参考信号进行测量;
    根据测量结果,选择驻留在第一小区或者第二小区;
    其中,所述第一参考信号为单频网SFN特有的参考信号,所述第二参考信号为小区或传输接收点cell/TRP特有的参考信号,所述第一小区为SFN特有的小区,所述第二小区为cell/TRP特有的小区或TRP。
  2. 根据权利要求1所述的方法,其中,
    所述第一参考信号的相关参数通过SFN特有的系统消息指示或cell/TRP特有的系统消息指示;或者,所述第二参考信号的相关参数通过cell/TRP特有的系统消息指示。
  3. 根据权利要求1所述的方法,其中,所述根据测量结果,选择驻留在第一小区或者第二小区,包括:
    根据测量结果,确定所述第一小区和所述第二小区的小区质量;
    根据所述第一小区和所述第二小区的小区质量,选择驻留在第一小区或者第二小区。
  4. 根据权利要求3所述的方法,其中,所述根据测量结果,确定所述第一小区的小区质量,包括以下至少一项:
    根据波束测量结果的平均值,确定所述第一小区的小区质量;
    根据预设数量个波束测量结果的平均值,确定所述第一小区的小区质量;
    根据高于预设测量门限的波束测量结果的平均值,确定所述第一小区的小区质量;
    根据最高的波束测量结果,确定所述第一小区的小区质量;
    根据高于预设测量门限的N个波束的波束测量结果的平均值,确定所述第一小区的小区质量;
    根据波束测量结果高于预设测量门限的波束的数量,确定所述第一小区的小区质量。
  5. 根据权利要求3所述的方法,其中,当所述终端接收的参考信号包括 第一参考信号和第二参考信号时,所述选择驻留在第一小区或者第二小区,包括以下至少一项:
    根据预设优先级,优先选择驻留在所述第一小区,所述预设优先级由网络侧配置或协议约定;
    根据预设优先级,优先选择驻留在所述第二小区,所述预设优先级由网络侧配置或协议约定;
    当所述第一小区的小区质量高于第一预设门限时,选择驻留在所述第一小区;或者,当所述第一小区的小区质量低于第二预设门限时,选择驻留在小区质量高于第三预设门限的所述第二小区,所述第一预设门限、所述第二预设门限、所述第三预设门限由网络侧配置;
    当所述第二小区的小区质量高于第四预设门限时,选择驻留在所述第二小区;或者,当所述第二小区的小区质量低于第五预设门限时,选择驻留在小区质量高于第六预设门限的所述第一小区,所述第四预设门限、所述第五预设门限、所述第六预设门限由网络侧配置;
    所述第一小区的小区质量比所述第二小区的小区质量高于第一数值,选择驻留在所述第一小区,所述第一数值由网络侧配置或协议约定;
    所述第一小区的小区质量比所第二小区的小区质量低于第二数值,选择驻留在所述第二小区,所述第二数值由网络侧配置或协议约定;
    选择驻留在所述第一小区和所述第二小区中小区质量更高的小区。
  6. 根据权利要求5所述的方法,其中,在选择驻留在所述第一小区和所述第二小区中小区质量更高的小区时,所述方法还包括:
    为所述第一小区的小区质量增加第一补偿,所述第一补偿由网络侧配置或协议约定;
    或者,
    为所述第一小区的小区质量增加第一补偿,为所述第二小区的小区质量增加第二补偿,所述第一补偿和所述第二补偿由网络侧配置或协议约定。
  7. 根据权利要求5所述的方法,还包括:
    当所述第一小区和所述第二小区部署在不同的频率时,根据网络侧配置的频率优先级确定所述第一小区和所述第二小区的优先级。
  8. 根据权利要求3所述的方法,其中,当所述终端接收的参考信号全部为所述第一参考信号时,所述选择驻留在第一小区或者第二小区,包括以下至少一项:
    根据预设优先级,优先选择驻留在所述第一小区,所述预设优先级由网络侧配置或协议约定;
    当所述第一小区的小区质量高于第一预设门限时,选择驻留在所述第一小区;或者,当所述第一小区的小区质量低于第二预设门限时,进入任意小区驻留模式,所述第一预设门限和所述第二预设门限由网络侧配置或协议约定;
    选择驻留在小区质量最高的所述第一小区。
  9. 根据权利要求8所述的方法,其中,在选择驻留在小区质量最高的所述第一小区时,所述方法还包括:
    为所述第一小区的小区质量增加第一补偿,所述第一补偿由网络侧配置或协议约定。
  10. 根据权利要求1所述的方法,还包括:
    在进行小区选择或重选之前,从网络侧接收第一指示信息,所述第一指示信息包括以下至少一项:
    SFN标识或索引;
    SFN组或者SFN的范围;
    SFN包括的cell/TRP;
    小区是否支持SFN layer;
    小区所属SFN。
  11. 根据权利要求1所述的方法,还包括:
    通过小区重选或者小区选择操作,从驻留在所述第二小区变换到驻留在所述第一小区。
  12. 根据权利要求1所述的方法,其中,
    当网络部署有高频范围和低频范围时,所述第一小区中包括所述低频范围内的小区,所述第二小区中包括所述高频范围内的小区;
    或者,
    当网络包括卫星通信网络时,所述第一小区中包括高空平台站HAPS小区或高轨卫星小区,所述第二小区中包括低轨卫星小区或地面基站覆盖的小区。
  13. 根据权利要求1所述的方法,还包括:
    当驻留在所述第一小区或所述第二小区后,在所述第二小区发起随机接入RACH或连接建立。
  14. 根据权利要求5或8所述的方法,其中,所述选择驻留在第一小区或者第二小区,还包括:
    当所述终端支持所述第一小区时,优先选择驻留在所述第一小区;
    或者,
    当网络侧指示支持所述第一小区时,优先选择驻留在所述第一小区;
    或者,
    当网络侧指示所述终端驻留在所述第一小区或者优先驻留在所述第一小区时,优先选择驻留在所述第一小区。
  15. 根据权利要求14所述的方法,其中,
    所述网络侧通过系统消息,或者专用的RRC消息指示所述终端,所述专用的RRC消息包括以下至少一项:RRC释放release,RRC中止suspend消息。
  16. 一种小区选择重选装置,应用于终端,包括:
    测量模块,用于对第一参考信号和/或第二参考信号进行测量;
    驻留模块,用于根据测量结果,选择驻留在第一小区或者第二小区;
    其中,所述第一参考信号为单频网SFN特有的参考信号,所述第二参考信号为小区或传输接收点cell/TRP特有的参考信号,所述第一小区为SFN特有的小区,所述第二小区为cell/TRP特有的小区或TRP。
  17. 根据权利要求16所述的装置,其中,
    所述第一参考信号的相关参数通过SFN特有的系统消息指示或cell/TRP特有的系统消息指示;或者,所述第二参考信号的相关参数通过cell/TRP特有的系统消息指示。
  18. 根据权利要求16所述的装置,其中,所述驻留模块,包括:
    确定单元,用于根据测量结果,确定所述第一小区和所述第二小区的小区质量;
    驻留单元,用于根据所述第一小区和所述第二小区的小区质量,选择驻留在第一小区或者第二小区。
  19. 根据权利要求18所述的装置,其中,所述确定单元进一步地用于以下至少一项:
    根据波束测量结果的平均值,确定所述第一小区的小区质量;
    根据预设数量个波束测量结果的平均值,确定所述第一小区的小区质量;
    根据高于预设测量门限的波束测量结果的平均值,确定所述第一小区的小区质量;
    根据最高的波束测量结果,确定所述第一小区的小区质量;
    根据高于预设测量门限的N个波束的波束测量结果的平均值,确定所述第一小区的小区质量;
    根据波束测量结果高于预设测量门限的波束的数量,确定所述第一小区的小区质量。
  20. 根据权利要求18所述的装置,其中,当所述终端接收的参考信号包括第一参考信号和第二参考信号时,所述驻留单元进一步用于以下至少一项:
    根据预设优先级,优先选择驻留在所述第一小区,所述预设优先级由网络侧配置或协议约定;
    根据预设优先级,优先选择驻留在所述第二小区,所述预设优先级由网络侧配置或协议约定;
    当所述第一小区的小区质量高于第一预设门限时,选择驻留在所述第一小区;或者,当所述第一小区的小区质量低于第二预设门限时,选择驻留在小区质量高于第三预设门限的所述第二小区,所述第一预设门限、所述第二预设门限、所述第三预设门限由网络侧配置;
    当所述第二小区的小区质量高于第四预设门限时,选择驻留在所述第二小区;或者,当所述第二小区的小区质量低于第五预设门限时,选择驻留在小区质量高于第六预设门限的所述第一小区,所述第四预设门限、所述第五预设门限、所述第六预设门限由网络侧配置;
    所述第一小区的小区质量比所述第二小区的小区质量高于第一数值,选择驻留在所述第一小区,所述第一数值由网络侧配置或协议约定;
    所述第一小区的小区质量比所第二小区的小区质量低于第二数值,选择驻留在所述第二小区,所述第二数值由网络侧配置或协议约定;
    选择驻留在所述第一小区和所述第二小区中小区质量更高的小区。
  21. 根据权利要求20所述的装置,其中,所述驻留单元还用于:
    为所述第一小区的小区质量增加第一补偿,所述第一补偿由网络侧配置或协议约定;
    或者,
    为所述第一小区的小区质量增加第一补偿,为所述第二小区的小区质量增加第二补偿,所述第一补偿和所述第二补偿由网络侧配置或协议约定。
  22. 根据权利要求20所述的装置,还包括:
    确定模块,用于当所述第一小区和所述第二小区部署在不同的频率时,根据网络侧配置的频率优先级确定所述第一小区和所述第二小区的优先级。
  23. 根据权利要求18所述的装置,其中,当所述终端接收的参考信号全部为所述第一参考信号时,所述驻留单元进一步用于以下至少一项:
    根据预设优先级,优先选择驻留在所述第一小区,所述预设优先级由网络侧配置或协议约定;
    当所述第一小区的小区质量高于第一预设门限时,选择驻留在所述第一小区;或者,当所述第一小区的小区质量低于第二预设门限时,进入任意小区驻留模式,所述第一预设门限和所述第二预设门限由网络侧配置或协议约定;
    选择驻留在小区质量最高的所述第一小区。
  24. 根据权利要求23所述的装置,其中,所述驻留单元还用于:
    为所述第一小区的小区质量增加第一补偿,所述第一补偿由网络侧配置或协议约定。
  25. 根据权利要求16所述的装置,还包括:
    接收模块,用于在进行小区选择或重选之前,从网络侧接收第一指示信息,所述第一指示信息包括以下至少一项:
    SFN标识或索引;
    SFN组或者SFN的范围;
    SFN包括的cell/TRP;
    小区是否支持SFN layer;
    小区所属SFN。
  26. 根据权利要求16所述的装置,其中,所述驻留模块还用于:
    通过小区重选或者小区选择操作,从驻留在所述第二小区变换到驻留在所述第一小区。
  27. 根据权利要求16所述的装置,其中,
    当网络部署有高频范围和低频范围时,所述第一小区中包括所述低频范围内的小区,所述第二小区中包括所述高频范围内的小区;
    或者,
    当网络包括卫星通信网络时,所述第一小区中包括高空平台站HAPS小区或高轨卫星小区,所述第二小区中包括低轨卫星小区或地面基站覆盖的小区。
  28. 根据权利要求16所述的装置,还包括:
    连接模块,用于当驻留在所述第一小区或所述第二小区后,在所述第二小区发起随机接入RACH或连接建立。
  29. 根据权利要求20或23所述的装置,其中,所述驻留模块还用于:
    当所述终端支持所述第一小区时,优先选择驻留在所述第一小区;
    或者,
    当网络侧指示支持所述第一小区时,优先选择驻留在所述第一小区;
    或者,
    当网络侧指示所述终端驻留在所述第一小区或者优先驻留在所述第一小区时,优先选择驻留在所述第一小区。
  30. 根据权利要求29所述的装置,其中,
    所述网络侧通过系统消息,或者专用的RRC消息指示所述终端,所述专用的RRC消息包括以下至少一项:RRC release,RRC suspend消息。
  31. 一种终端,包括处理器,存储器及存储在所述存储器上并可在所述处 理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1至15任一项所述的小区选择重选方法的步骤。
  32. 一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如权利要求1至15任一项所述的小区选择重选方法的步骤。
  33. 一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如权利要求1至15任一项所述的小区选择重选方法的步骤。
  34. 一种程序产品,所述程序产品存储在非易失性的可读存储介质,所述程序产品被至少一个处理器执行以实现如权利要求1至15任一项所述的小区选择重选方法的步骤。
  35. 一种终端,被配置成用于执行如权利要求1至15任一项所述的小区选择重选方法的步骤。
PCT/CN2021/121243 2020-09-29 2021-09-28 小区选择重选方法、装置、终端及可读存储介质 Ceased WO2022068794A1 (zh)

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