WO2021031189A1 - Procédé de communication sans fil, dispositif terminal et dispositif de réseau - Google Patents

Procédé de communication sans fil, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2021031189A1
WO2021031189A1 PCT/CN2019/102004 CN2019102004W WO2021031189A1 WO 2021031189 A1 WO2021031189 A1 WO 2021031189A1 CN 2019102004 W CN2019102004 W CN 2019102004W WO 2021031189 A1 WO2021031189 A1 WO 2021031189A1
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WO
WIPO (PCT)
Prior art keywords
cho
cell
configuration
cho cell
compliance check
Prior art date
Application number
PCT/CN2019/102004
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English (en)
Chinese (zh)
Inventor
杨宁
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2019/102004 priority Critical patent/WO2021031189A1/fr
Priority to CN201980093063.7A priority patent/CN113475118A/zh
Publication of WO2021031189A1 publication Critical patent/WO2021031189A1/fr

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    • 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
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H04W36/362—Conditional handover

Definitions

  • a terminal device After receiving a radio resource control (Radio Resource Control, RRC) reconfiguration message, a terminal device will perform a compliance check (compliance check) on the configuration in the RRC reconfiguration message. If the terminal device can comply with For the configuration included in the reconfiguration message, the terminal device replies to the base station with an RRC reconfiguration complete message; if the terminal device cannot comply with the configuration included in the reconfiguration message, the terminal device triggers the RRC connection re-establishment process.
  • RRC Radio Resource Control
  • Fig. 3 is a schematic diagram of a wireless communication method provided by an embodiment of the present application.
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal).
  • the network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located in the coverage area.
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the "terminal equipment” used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN public switched telephone networks
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.
  • the handover condition of the CHO cell mentioned in the embodiment of the present application may also be referred to as a handover execution or trigger condition, and the handover condition configuration mainly indicates when the terminal device can switch to the CHO cell.
  • the handover condition configuration can indicate the first channel quality threshold between the terminal device and the source cell and the second channel quality threshold between the terminal device and the target cell, that is, the channel quality between the terminal device and the source cell is less than this
  • the first channel quality threshold and/or when the channel quality with the CHO cell is greater than the second channel quality threshold you can switch to the CHO cell.
  • the channel quality can be measured by RRM.
  • the target cell configuration mentioned in the embodiments of the present application may indicate the parameters used when accessing the CHO cell and/or after accessing the CHO cell, for example, the transmission beam and the scrambling method used.
  • the success of the compliance check of the handover condition configuration of the CHO cell may mean that the terminal device can comply with the handover condition configuration, that is, when the handover condition indicated by the handover condition configuration is satisfied, the terminal device can access the CHO cell.
  • the failure of the compliance check of the handover condition configuration of the CHO cell may mean that the terminal device cannot comply with the handover condition configuration, that is, when the handover condition indicated by the handover condition configuration is met, the terminal device cannot access the CHO cell .
  • the target cell configuration of different CHO cells may be the same or different.
  • the network equipment can configure the target cell configuration for each CHO cell separately.
  • the target cell configuration configured for different CHO cells may be the same or different.
  • the target cell configuration of the CHO cell can be generated by the target base station and sent to the terminal device via the source base station.
  • the successful compliance check of the target cell configuration of the CHO cell can mean that the terminal device can comply with the target cell configuration, that is, the terminal device can use the target cell configuration to access the CHO cell and/or connect to the CHO cell with CHO cell communicates.
  • the failure of the compliance check of the target cell configuration of the CHO cell may mean that the terminal device cannot comply with the target cell configuration, that is, the terminal device cannot use the target cell configuration to access the CHO cell and/or The CHO cell then communicates with the CHO cell.
  • the terminal device may perform a compliance check on the handover condition configuration in the RRC message.
  • the RRC message for example, the RRC reconfiguration message
  • the first CHO cell to be accessed and/or the second CHO cell to be accessed are cells that pass the compliance check configured by the handover condition.
  • the terminal device can perform a compliance check on the handover condition configuration of all configured CHO cells.
  • the compliance check result configured for the handover condition of the CHO cell may be used for the terminal device to determine whether to trigger the RRC connection re-establishment process.
  • the result of the compliance check configured on the handover condition of the CHO cell may also be used for the terminal device to determine the method used to select the cell to be accessed.
  • the terminal device may perform a compliance check on the handover condition configuration of each of the multiple CHO cells; according to the compliance check result of the handover condition configuration, determine to select the first CHO cell to be accessed and / Or the manner of the second CHO cell to be accessed; according to the determined manner, the first CHO cell to be accessed and/or the second CHO cell to be accessed are selected.
  • the candidate cells may include CHO cells or non-CHO cells. And, in a case where the CHO cell to be accessed is determined based on the handover condition of the CHO cell, the candidate cells include the CHO cell but not the non-CHO cell.
  • the terminal device may report the compliance check result of the handover condition configuration of multiple CHO cells to the network device.
  • the compliance check result of the handover condition configuration is optionally used to indicate a CHO cell in the multiple CHO cells that failed the compliance check of the handover condition configuration; and/or, the handover condition in the multiple CHO cells CHO cell where the configured compliance check succeeds.
  • the compliance check result is optionally carried in an RRC response message, for example, an RRC reconfiguration complete message.
  • the cell to be accessed is a CHO cell
  • the CHO handover method can be used for cell access.
  • the cell to be accessed may be determined based on the cell selection S criterion, or it may be determined based on the handover condition of the CHO cell.
  • the terminal device when it receives the RRC message, it can perform a compliance check on the handover condition configuration of each CHO cell in the RRC message. If the compliance check for the handover condition configuration of all CHO cells is successful, there is no need The RRC connection re-establishment process is triggered, and the terminal device can determine the CHO cell whose handover conditions are met as the first CHO cell to be accessed according to the handover conditions of each CHO cell. If the compliance check of the handover condition configuration of not all CHO cells is successful, the RRC connection re-establishment process can be triggered.
  • the configuration compliance check of the target cell of the first CHO cell to be accessed fails, according to the multiple CHO cells, except for the first CHO cell to be accessed
  • the handover conditions of other CHO cells determine the second CHO cell to be accessed.
  • the terminal device may report the compliance check result of the target cell configuration of the first CHO cell to be accessed and/or the second CHO cell to be accessed to the network device; where The compliance check result of the target cell configuration is used to indicate whether the compliance check of the target cell configuration of the first CHO cell to be accessed and/or the second CHO cell to be accessed is successful.
  • Step 3 If the terminal device passes the handover condition configuration compliance check, the terminal device performs Radio Resource Management (RRM) measurement according to the received handover condition to evaluate whether the CHO cell meets the handover condition.
  • RRM Radio Resource Management
  • the terminal device executes the CHO handover process to the CHO cell;
  • the compliance check of the target cell configuration is performed on the CHO cell that meets the handover condition, which avoids the compliance check on unrelated CHO cells and avoids triggering when the compliance check fails Unnecessary RRC connection re-establishment process reduces data loss.
  • the compliance check fails, the RRC connection re-establishment is not triggered immediately, but the compliance check is continued on other CHO cells that meet the triggering conditions, which can increase the probability of successful CHO access by the terminal device, compared to triggering the connection re-establishment The process improves business continuity assurance.
  • Step 1 The serving cell base station configures one or more CHO cells for the terminal device through RRC messages (such as RRC reconfiguration messages), where each CHO cell contains the target cell configuration generated by the target cell and the handover condition configuration generated by the serving cell.
  • RRC messages such as RRC reconfiguration messages
  • Step 3 If the terminal device passes the compliance check of the handover condition configuration, the terminal device can perform RRM measurement according to the received handover condition configuration to evaluate whether the CHO cell meets the handover condition.
  • the terminal device executes the CHO handover process to the CHO cell.
  • FIG. 4 is based on this application.
  • the method 400 includes at least part of the following content.
  • the terminal equipment device sends an RRC response message according to the handover condition configuration of at least one CHO cell and/or the compliance check result of the target cell configuration.
  • the terminal device may not evaluate the handover condition of the deleted CHO cell.
  • Step 1 The serving cell base station configures one or more CHO cells for the terminal device through RRC messages (such as RRC reconfiguration messages), where each CHO cell contains the target cell configuration generated by the target cell and the handover condition configuration generated by the serving cell;
  • RRC messages such as RRC reconfiguration messages
  • the terminal device does not trigger the RRC connection re-establishment process.
  • the behavior of the terminal device may be: the terminal device deletes the CHO cell, that is, the terminal device does not evaluate the handover condition corresponding to the CHO cell.
  • the further terminal device may send an RRC response message to the network device, which indicates:
  • the terminal equipment cannot comply with the handover condition configuration of the CHO cell: or
  • the terminal equipment cannot comply with the target cell configuration of the CHO cell;
  • the terminal device cannot comply with the handover condition configuration and target cell configuration of the CHO cell.
  • the failure of the CHO configuration compliance check does not trigger the RRC connection re-establishment process, but the configuration (handover condition configuration and/or target cell configuration) that the network side reports the compliance check failure, which allows the serving cell to be based on the realization Update new CHO candidate cells and related configurations in time. Increase the success probability of CHO access by configuring new compliant cells.
  • the terminal device may delete the handover condition configuration compliance check failure.
  • the CHO cell and/or the target cell configures the CHO cell that failed the compliance check, and does not indicate the deleted CHO cell in the RRC response message.
  • the method 400 and the method 300 can be used in combination, that is, the terminal device can execute the method 300 and the method 400 at the same time.
  • the terminal device after the terminal device receives the RRC message sent by the network device, it performs a compliance check on the CHO cell handover condition configuration and the target cell configuration in the RRC message, and can indicate in the RRC response message CHO cells that fail the compliance check of the handover condition configuration and/or target cell configuration can avoid triggering the RRC re-establishment process when there are CHO cells that fail the compliance check of the handover condition configuration and the target cell configuration, thereby avoiding frequent The problem of data loss and long data interruption time caused by RRC connection re-establishment, and the RRC response message indicates to the network device the handover condition configuration and/or the CHO cell that failed the compliance check of the target cell configuration, which is convenient for the network device Obtain in time the CHO cell that has failed the compliance check of the handover condition configuration and/or the target cell configuration.
  • FIG. 5 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application. As shown in FIG. 5, the terminal device 500 includes a processing unit 510.
  • the first CHO cell to be accessed and/or the second CHO cell to be accessed are selected.
  • the processing unit 510 is further configured to:
  • the first to be accessed is determined according to the handover condition of each CHO cell in the multiple CHO cells CHO community.
  • the processing unit 510 is further configured to:
  • the processing unit 510 is further configured to:
  • the processing unit 510 is further configured to:
  • terminal device 500 may be used to implement the corresponding operations implemented by the terminal device in the foregoing method embodiments, and for the sake of brevity, details are not described herein again.
  • the processing unit 620 is configured to perform a compliance check on the handover condition configuration and the target cell configuration of the at least one CHO cell;
  • the communication unit 610 is further configured to report an RRC response message to the network device, the RRC response message indicating a CHO cell that has failed the handover condition configuration compliance check and/or a CHO cell that has failed the target cell configuration compliance check.
  • From the at least one CHO cell delete the CHO cell that failed the handover condition configuration compliance check and/or the CHO cell that failed the target cell configuration compliance check.
  • FIG. 7 is a schematic block diagram of a network device 700 according to an embodiment of the present application.
  • the network device 700 includes a communication unit 710.
  • the communication unit 710 is used for:
  • RRC response message sent by the terminal device is received, where the RRC response message indicates a CHO cell that fails the handover condition configuration compliance check and/or the target cell configures a CHO cell that fails the compliance check.
  • the communication device 800 may specifically be a mobile terminal/terminal device of an embodiment of the present application, and the communication device 800 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. For simplicity , I won’t repeat it here.
  • the chip 900 may further include a memory 920.
  • the processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.
  • the chip 900 may further include an input interface 930.
  • the processor 910 can control the input interface 930 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • Synchronous DRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM Enhanced SDRAM, ESDRAM
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DRRAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application ,
  • the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application ,
  • I will not repeat it here.
  • the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For brevity, I won't repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Des modes de réalisation de la présente demande concernent un procédé et un dispositif de communication sans fil, permettant la mise en œuvre d'une vérification de conformité pour une configuration de transfert intercellulaire. Le procédé comprend les étapes suivantes : la réalisation d'une vérification de conformité sur une configuration d'une cellule cible d'une première cellule de transfert intercellulaire conditionnel (CHO) devant faire l'objet d'un accès dans de multiples cellules de CHO ; dans le cas où la vérification de conformité pour la configuration de la cellule cible de ladite première cellule de CHO est réussie, la commutation, d'une cellule de service source à ladite première cellule de CHO sur la base d'un mode de commutation de CHO ; dans le cas où la vérification de conformité pour la configuration de la cellule cible de ladite première cellule de CHO échoue, la réalisation d'une vérification de conformité sur une configuration d'une cellule cible d'une seconde cellule de CHO devant faire l'objet d'un accès dans les multiples cellules de CHO, de façon à déterminer s'il faut ou non commuter de la cellule de service source à ladite seconde cellule de CHO.
PCT/CN2019/102004 2019-08-22 2019-08-22 Procédé de communication sans fil, dispositif terminal et dispositif de réseau WO2021031189A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2019/102004 WO2021031189A1 (fr) 2019-08-22 2019-08-22 Procédé de communication sans fil, dispositif terminal et dispositif de réseau
CN201980093063.7A CN113475118A (zh) 2019-08-22 2019-08-22 无线通信方法、终端设备和网络设备

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PCT/CN2019/102004 WO2021031189A1 (fr) 2019-08-22 2019-08-22 Procédé de communication sans fil, dispositif terminal et dispositif de réseau

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CN115136653B (zh) * 2022-05-17 2024-05-14 北京小米移动软件有限公司 小区切换方法和装置

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