WO2021102879A1 - 一种连接重建方法、终端设备及存储介质 - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
- H04W36/0038—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information of security context information
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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
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W36/08—Reselecting an access point
- H04W36/083—Reselecting an access point wherein at least one of the access points is a moving node
Definitions
- This application relates to the field of wireless communication technology, and in particular to a connection reestablishment method, terminal device and storage medium.
- connection reestablishment method provides a connection reestablishment method, terminal device, and storage medium, which clarify how the terminal device performs connection reestablishment when the cell to be accessed is a CHO cell.
- an embodiment of the present application provides a connection re-establishment method, including: during the connection re-establishment process, the terminal device is prohibited from performing at least one of the following: suspending all RBs except SRB0, resetting the MAC, and releasing the master. Configuration of all secondary cells of the cell group and release of the configuration of primary and secondary cells.
- an embodiment of the present application provides a connection re-establishment method, including: in a case where the cell selected by the terminal device for connection re-establishment is a candidate cell for conditional handover, the terminal device restores SRB1.
- an embodiment of the present application provides a terminal device, the terminal device includes: a first processing unit configured to prohibit performing at least one of the following during the connection re-establishment process: suspend all other than SRB0 RB, reset MAC, release the configuration of all the secondary cells of the primary cell group, and release the configuration of the primary and secondary cells.
- an embodiment of the present application provides a terminal device.
- the terminal includes a second processing unit configured to restore SRB1 when the cell selected by the terminal device for connection reestablishment is a candidate cell for conditional handover.
- an embodiment of the present application provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the above-mentioned terminal when the computer program is running. The steps of the connection re-establishment method performed by the device.
- an embodiment of the present application provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the connection reconstruction method performed by the terminal device.
- an embodiment of the present application provides a storage medium that stores an executable program, and when the executable program is executed by a processor, it implements the connection re-establishment method executed by the terminal device.
- an embodiment of the present application provides a computer program product, including computer program instructions that cause a computer to execute the connection re-establishment method performed by the terminal device described above.
- an embodiment of the present application provides a computer program that enables a computer to execute the connection re-establishment method performed by the terminal device described above.
- connection re-establishment method, terminal device, and storage medium provided by the embodiments of the present application include: during the connection re-establishment process, the terminal device is prohibited from performing at least one of the following: suspending all RBs except SRB0, resetting MAC, and releasing Configuration of all secondary cells of the primary cell group, and release of the configuration of primary and secondary cells.
- the terminal device can use the configuration of all the secondary cells of the unreleased primary cell group or the configuration of the unreleased primary and secondary cells to execute the CHO cell Access; and after the cell access of CHO is completed, use the unsuspended SRB1 to send an RRC reconfiguration complete message; and then realize connection re-establishment and cell access.
- Figure 1 is a schematic diagram of the process of applying for cell handover
- Figure 2 is a schematic diagram of the handover process of CHO application
- FIG. 3 is a schematic diagram of the composition structure of a communication system according to an embodiment of the application.
- FIG. 4 is a schematic diagram of an optional processing flow of the connection re-establishment method according to an embodiment of this application;
- FIG. 5 is a schematic diagram of an overall flow of a connection re-establishment method according to an embodiment of this application;
- FIG. 6 is a schematic diagram of another optional processing flow of the connection re-establishment method according to an embodiment of this application.
- FIG. 7 is a schematic diagram of another overall flow of the connection re-establishment method according to an embodiment of this application.
- FIG. 8 is a schematic diagram of an optional composition structure of a terminal device according to an embodiment of the application.
- FIG. 9 is a schematic diagram of another optional composition structure of a terminal device according to an embodiment of the application.
- FIG. 10 is a schematic diagram of the hardware composition structure of a terminal device according to an embodiment of the application.
- 5G Enhance Mobile Broadband
- URLLC Ultra Reliable Low Latency Communications
- mMTC Massive Machine Type Communication
- eMBB still aims for users to obtain multimedia content, services and data, and its demand is growing very rapidly.
- eMBB may be deployed in different scenarios, such as indoors, urban areas, rural areas, etc., its capabilities and requirements are also quite different, so it cannot be generalized, and must be analyzed in detail in conjunction with specific deployment scenarios.
- Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), traffic safety protection, etc.
- Typical features of mMTC include: high connection density, small data volume, delay-insensitive services, low-cost modules and long service life.
- the New Radio (NR) system can also be deployed independently.
- a new radio resource control (Radio Resource Control, RRC) state is defined, namely RRC-Inactive (Deactivated) state.
- RRC-Idle state mobility is cell reselection based on terminal equipment, the paging process is initiated by the Core Network (Core Network, CN), and the paging area is configured by the CN.
- Core Network Core Network
- CN paging area
- the RRC-Inactive state mobility is based on the cell reselection of the terminal device, there is a connection between CN-NR, the context of the terminal device exists on a certain network device, and the paging process is controlled by the Radio Access Network (Radio Access Network, RAN) trigger, the RAN-based paging area is managed by the RAN, and the network equipment can know that the location of the terminal device is based on the RAN-based paging area level.
- the RRC-Connected state there is an RRC connection, and there is a terminal device context between the network device and the terminal device. The network device knows that the location of the terminal device is at the specific cell level; mobility is the mobility controlled by the network device, and the network device Unicast data can be transmitted with the terminal equipment.
- the terminal device can trigger the RRC connection re-establishment process.
- the terminal device needs to perform cell selection to perform RRC connection re-establishment, that is, select the cell to be accessed; the terminal device starts the timer T311; if T311 times out or reselects to the inter-RAT cell, the terminal device returns to the RRC-idle state.
- RRC connection re-establishment request message The terminal device sends an RRC connection re-establishment request message on SRB0 through the UpLink Common Control Channel (UL_CCCH); the RRC connection re-establishment request message may carry the terminal device's (Access Stratum, AS) Layer initial identification information, Short MAC-I, and re-establishment reason; the RRC connection re-establishment request message corresponds to message 3 (Msg3) in the random access process.
- Msg3 message 3
- RRC connection re-establishment The network device replies to the RRC connection re-establishment request message on SRB1 through the DownLink Dedicated Control Channel (DL_DCCH); the message returned by the network device does not carry any actual information (except for the color code (National Colour Code)). Code, NCC)); the message returned by the network device corresponds to Msg4 in the random access process. Among them, MSG4 is used for integrity protection.
- DL_DCCH DownLink Dedicated Control Channel
- NCC National Colour Code
- RRC connection re-establishment complete message The terminal device sends an RRC connection re-establishment complete message on SRB1 through an uplink dedicated control channel (UpLink Dedicated Control Channel, UL-DCCH); the RRC connection re-establishment complete message does not carry any actual information.
- the RRC connection re-establishment failure may occur, or the RRC connection re-establishment request timer T301 expires, or the selected cell is inappropriate, or the RRC connection re-establishment message (MSG4) integrity protection verification fails, etc.
- the terminal device returns to the RRC_IDLE state.
- the network device replies with an RRC connection establishment message on SRB0 through DL_CCCH. After the network device receives the message sent by the network device, it deletes the previous context and executes the RRC connection establishment process.
- the New Rational (NR) system supports the handover process of connected terminal devices.
- a terminal device that is using network services moves from one cell to another, or due to wireless transmission service load adjustment, activation operation and maintenance, equipment failure, etc., in order to ensure the continuity of communication and the quality of service, the system must The communication link between the terminal equipment and the original cell is transferred to the new cell, that is, the handover process is performed.
- the cell handover process applicable to the LTE system and the NR system, as shown in Figure 1 is divided into the following three stages:
- Phase 1 including steps 1 to 5
- handover preparation including measurement control and reporting, handover request and confirmation.
- Phase 2 (including steps 6 to 8), handover execution: the terminal device immediately executes the handover process after receiving the handover command, that is, the terminal device disconnects the source cell and connects to the target cell (such as performing random access, sends an RRC handover complete message to Target network equipment, etc.); secondary node (Secondary Node, SN) state transfer, data forwarding.
- the terminal device immediately executes the handover process after receiving the handover command, that is, the terminal device disconnects the source cell and connects to the target cell (such as performing random access, sends an RRC handover complete message to Target network equipment, etc.); secondary node (Secondary Node, SN) state transfer, data forwarding.
- SN Secondary Node
- Phase 3 (including steps 9 to 12), the handover is completed: the target cell and the (Acess and Mobility Management Function, AMF) and the user plane function (User Port Function, UPF) execute the path switch (Path Switch), and release the terminal of the source network device Device context.
- AMF Access and Mobility Management Function
- UPF User Port Function
- the terminal device immediately starts the T304 timer after receiving the handover command, and starts to synchronize the downlink data to the target cell, obtains the master information block (MIB) information of the target cell, and then initiates the random access process. During the random access process, multiple preamble retransmissions are allowed until the random access is successful. If the T304 timer expires, the cell handover fails, and the terminal device triggers the RRC connection re-establishment process.
- MIB master information block
- the handover process of CHO is shown in Figure 2.
- the terminal equipment performs cell measurement, configuration and reporting according to the configuration information and measurement configuration of the target cell sent by the source network equipment; the source network equipment and the target network equipment prepare for handover; the terminal equipment judges When the CHO handover execution conditions for the target cell are met, the terminal device executes handover to the target cell according to the pre-configured CHO command (command) (such as triggering a random access process and sending a handover completion message), and then establishes a connection with the target network The connection of the device.
- command such as triggering a random access process and sending a handover completion message
- the CHO command includes the configuration information of the target cell and the CHO handover execution condition configuration; the CHO handover execution condition configuration is determined by the source network device, and the source network device configures the determined CHO handover execution condition configuration through the radio resource control (Radio Resource Control). , RRC) message is sent to the terminal device.
- Radio Resource Control Radio Resource Control
- the 3GPP RAN2#106 meeting concluded on the failure recovery process as follows:
- the terminal device performs cell selection; if the selected cell is a candidate cell of CHO, the terminal device tries to perform the cell handover of CHO; otherwise, the terminal device performs the connection re-establishment process.
- the terminal device performs CHO cell handover; otherwise, the terminal device performs a connection re-establishment process.
- the RRC connection reconstruction process can include the following four steps:
- connection re-establishment initialization may include at least one of the following: stop the T310 timer and/or T304, start the timer T311, suspend all RBs except SRB0, reset the media access control (Media Access Control). Control, MAC), release the configuration of the secondary cell (Secondary Cell, SCell) of all the master cell group (Master Cell Group, MCG), and release the configuration of the primary and secondary cell (spCellConfig), etc.
- the terminal device performs a cell selection process after performing connection re-establishment initialization, and the cell selection process is used for the terminal device to select a cell to be accessed.
- the connection reconstruction initialization can be described as the following way:
- the UE Upon initiation of the procedure, the UE shall:
- the existing connection re-establishment initialization process will cause the candidate cell selected by the terminal device to be inaccessible.
- the terminal device needs to use the Signaling Radio Bearer (SRB1) to transmit the RRC reconfiguration complete message after completing the cell access; however, the existing During the initialization process of connection re-establishment, the terminal device has suspended all radio bearers (Radio Bearer, RB) except SRB0, that is, SRB1 is also suspended, and the terminal device cannot use SRB1 to transmit the RRC reconfiguration complete message.
- Radio Bearer Radio Bearer
- the terminal device releases the MCG SCell and primary and secondary cell configuration (spCellConfig)
- spCellConfig MCG SCell and primary and secondary cell configuration
- the embodiment of this application provides a connection reestablishment method.
- the connection reestablishment method of the embodiment of this application can be applied to various communication systems, for example: global system of mobile communication (GSM) system, code division multiple access (code division multiple access, GSM) system multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division Duplex (frequency division duplex, FDD) system, LTE time division duplex (TDD) system, advanced long term evolution (LTE-A) system, new radio (NR) system, The evolution of the NR system, the LTE (LTE-based access to unlicensed spectrum, LTE-U) system on the unlicensed frequency band, the NR (NR-based access to unlicensed spectrum, NR-U) system on the unlicensed frequency band, and the general mobile Communication system (universal mobile telecommunication system, UMTS), global interoperability for microwave access (WiMAX)
- D2D device to device
- M2M machine to machine
- MTC machine type communication
- V2V vehicle to vehicle
- the network equipment involved in the embodiments of this application can be a common base station (such as a NodeB or eNB or gNB), a new radio controller (NR controller), a centralized network element (centralized unit), a new radio base station, Radio remote module, micro base station, relay, distributed unit, reception point (transmission reception point, TRP), transmission point (transmission point, TP), or any other equipment.
- a common base station such as a NodeB or eNB or gNB
- NR controller new radio controller
- a centralized network element centralized unit
- a new radio base station Radio remote module
- micro base station relay, distributed unit, reception point (transmission reception point, TRP), transmission point (transmission point, TP), or any other equipment.
- TRP transmission reception point
- TP transmission point
- the terminal device may be any terminal.
- the terminal device may be a user equipment for machine-type communication. That is to say, the terminal equipment can also be referred to as user equipment UE, mobile station (mobile station, MS), mobile terminal (mobile terminal), terminal (terminal), etc., and the terminal device can be accessed via a radio access network (radio access).
- network, RAN communicates with one or more core networks.
- the terminal device can be a mobile phone (or called a "cellular" phone), a computer with a mobile terminal, etc., for example, the terminal device can also be a portable or pocket-sized , Handheld, computer built-in or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network.
- the terminal device may be a user equipment for machine-type communication. That is to say, the terminal equipment can also be referred to as user equipment UE, mobile station (mobile station, MS), mobile terminal (mobile terminal), terminal (terminal), etc., and the terminal device can be accessed via a radio access network (radio
- network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites.
- the embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.
- communication between network equipment and terminal equipment and between terminal equipment and terminal equipment can be carried out through licensed spectrum, or through unlicensed spectrum, or through licensed spectrum and terminal equipment at the same time. Unlicensed spectrum for communication.
- Between network equipment and terminal equipment and between terminal equipment and terminal equipment can communicate through the spectrum below 7 gigahertz (gigahertz, GHz), can also communicate through the spectrum above 7GHz, and can also use the frequency spectrum below 7GHz at the same time. Communication is performed in the frequency spectrum above 7GHz.
- the embodiment of the present application does not limit the spectrum resource used between the network device and the terminal device.
- D2D device to device
- M2M machine to machine
- MTC machine type communication
- V2V vehicle to vehicle
- the communication system 100 applied in the embodiment of the present application is shown in FIG. 3.
- 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 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
- the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network side devices in 5G networks, or network devices in the future evolution of Public Land Mobile Network (PLMN), etc.
- BTS Base Transceiver Station
- NodeB, NB base station
- LTE Long Term Evolutional Node B
- eNB evolved base station
- CRAN Cloud Radio Access Network
- the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridge
- 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
- a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
- mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; as well as conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device.
- PCS Personal Communications System
- GPS Global Positioning System
- Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
- the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
- SIP Session Initiation Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistant
- the terminal devices 120 may perform direct terminal connection (Device to Device, D2D) communication.
- D2D Direct terminal connection
- the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
- NR New Radio
- Figure 3 exemplarily shows one network device and two terminal devices.
- the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
- the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
- network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
- the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
- the communication device may include a network device 110 with a communication function and a terminal device 120.
- the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
- the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiment of the present application.
- An optional processing flow of the connection re-establishment method provided by the embodiment of the present application, as shown in FIG. 4, includes the following steps:
- Step S201 During the connection re-establishment process, the terminal device is prohibited from performing at least one of the following: suspend all RBs except SRB0, reset MAC, release the configuration of all secondary cells in the primary cell group, and release the configuration of all secondary cells in the primary cell group. Configuration.
- the prohibition of execution may be ignored, skipped, or cancelled.
- the condition that the terminal device prohibits execution of at least one of suspending all RBs except SRB0, resetting MAC, releasing the configuration of all secondary cells of the primary cell group, and releasing the configuration of the primary and secondary cells may be that the terminal device has been configured based on Candidate cells for conditional handover.
- condition that triggers the terminal device to perform connection re-establishment may be: CHO candidate cell access failure, radio link failure, or traditional cell handover failure, etc.; among them, traditional cell handover refers to non-CHO cell handover .
- Step S202 The terminal device selects a cell to access.
- connection reestablishment method may further include:
- Step S203 The terminal device executes cell access based on conditional handover based on the conditional handover configuration of the candidate cell.
- connection re-establishment method provided in the embodiment of the present application may further include:
- Step S204 The terminal device sends an RRC reconfiguration complete message to the network device corresponding to the selected cell.
- conditional handover configuration of the candidate cell is a configuration stored by the terminal device
- conditional handover configuration of the candidate cell may include the complete configuration of the conditional handover of the candidate cell
- conditional handover configuration of the candidate cell may also include The incremental configuration of the conditional handover of the candidate cell.
- the terminal device can directly perform cell access according to the complete configuration of the conditional handover of the candidate cell.
- the terminal device since in step S201, the terminal device prohibits releasing the configuration of all the secondary cells of the primary cell group and releasing the primary and secondary cells. Therefore, the terminal device can obtain the complete configuration of the conditional handover of the candidate cell based on the configuration of all the secondary cells of the primary cell group and/or release the configuration of the primary and secondary cells, and according to the condition of the candidate cell Complete configuration of handover for cell access. Since the terminal device prohibits suspension of all RBs except SRB0 in step S201, that is, SRB1 is not suspended, the terminal device can send an RRC reconfiguration complete message to the network device corresponding to the selected cell based on SRB1. In this way, when the cell to be accessed is a CHO cell, the terminal device can also perform connection reestablishment.
- the terminal device may perform at least one of the following before sending the RRC reestablishment request message to the network device corresponding to the selected cell: Suspend all RBs except SRB0, reset MAC, release the configuration of all secondary cells of the primary cell group, and release the configuration of primary and secondary cells. Among them, there is no order of execution between suspending all RBs except SRB0, resetting the MAC, releasing the configuration of all the secondary cells of the primary cell group, and releasing the configuration of the primary and secondary cells.
- the UE Upon initiation of the procedure, the UE shall:
- the UE Upon selecting a suitable NR cell, the UE shall:
- the UE Upon selecting an inter-RAT cell, the UE shall:
- Radio link failure, cell handover failure, or CHO cell handover failure triggers the terminal equipment to reestablish the RRC connection. If the terminal device is not configured with the candidate cell of CHO, the terminal device executes the existing connection re-establishment process (including the connection re-establishment initialization process). If the terminal device has configured the candidate cell of CHO, the terminal device skips or cancels or ignores the connection re-establishment initialization process, and executes the cell selection process.
- the terminal device If the cell to be accessed by the terminal device is not a candidate cell of CHO, the terminal device performs the connection re-establishment initialization process, and sends an RRC re-establishment request message to the network device corresponding to the selected cell, and receives the corresponding cell of the selected cell. RRC reconstruction request response message sent by the network device. If the cell to be accessed selected by the terminal device is a candidate cell of CHO, the terminal device performs CHO cell access, and after the CHO cell access is completed, it sends the RRC reconfiguration complete to the network device corresponding to the selected cell news.
- An optional processing flow of the connection re-establishment method provided by the embodiment of the present application, as shown in FIG. 6, includes the following steps:
- Step S301 When the cell selected by the terminal device for connection reestablishment is a candidate cell for conditional handover, the terminal device restores SRB1.
- connection reestablishment method may further include :
- step S300 the terminal device switches the configuration based on the condition of the candidate cell, and performs cell access of CHO.
- conditional handover configuration of the candidate cell may include: a complete configuration of the conditional handover of the candidate cell.
- the terminal device can still perform cell access according to the stored complete configuration of the conditional switching of the candidate cell.
- Step S302 The terminal device sends an RRC reconfiguration complete message to the network device corresponding to the selected cell based on the SRB1.
- the terminal device enables the terminal device to send an RRC reconfiguration complete message to the network device corresponding to the selected cell, thereby realizing connection reestablishment and cell access.
- the terminal device if the terminal device has configured the candidate cell for conditional handover, and the cell to be accessed selected by the terminal device is not a candidate cell of CHO, the terminal device does not need to restore SRB1, Sending an RRC connection re-establishment request message to the network device corresponding to the selected cell.
- the embodiments of the present application are also applicable to scenarios where the source network device does not configure MCG, SCells and spCellConfig for the terminal device.
- the terminal device does not need to change the connection re-establishment initialization process, that is, the terminal device can perform at least one of the following: suspend all RBs except SRB0, reset MAC, and release all secondary cells of the primary cell group Configuration and release the configuration of primary and secondary cells.
- connection re-establishment process of the terminal device provided by the embodiment of the present application, as shown in FIG. 7:
- Radio link failure, cell handover failure, or CHO cell handover failure triggers the terminal equipment to reestablish the RRC connection. If the terminal device is not configured with a candidate cell of CHO, the terminal device executes the connection re-establishment initialization process. If the terminal device has configured the candidate cell of CHO, execute the cell selection process. If the cell to be accessed selected by the terminal device is not a candidate cell of CHO, the terminal device sends an RRC re-establishment request message to the network device corresponding to the selected cell.
- the terminal device If the cell to be accessed by the terminal device is a candidate cell of CHO, the terminal device performs CHO cell access, and after the CHO cell access is completed, SRB1 is restored; the terminal device is based on the network corresponding to the selected cell based on SRB1 The device sends an RRC reconfiguration complete message.
- the embodiment of the present application also provides a terminal device.
- the first processing unit 401 is configured to prohibit performing at least one of the following during the connection re-establishment process: suspend all RBs except SRB0, reset MAC, release the configuration of all secondary cells of the primary cell group, and release the primary cell group. The configuration of the secondary cell.
- the prohibition of execution includes: ignore, or skip, or cancel.
- the first processing unit 401 is further configured to select a cell to be accessed.
- the terminal device 400 has been configured with candidate cells for conditional handover.
- the first processing unit 401 is further configured to switch the configuration based on the condition of the candidate cell when the cell selected by the terminal device for connection reestablishment is a candidate cell for conditional handover, Perform cell access based on conditional handover.
- the terminal device 400 further includes:
- the first sending unit 402 is configured to send an RRC reconfiguration complete message to the network device corresponding to the selected cell.
- conditional handover configuration of the candidate cell includes: a complete configuration of the conditional handover of the candidate cell, or an incremental configuration of the conditional handover of the candidate cell.
- the first processing unit 401 is further configured to perform at least one of the following when the cell selected by the terminal device for connection reestablishment is not a candidate cell for conditional handover: Start all RBs except SRB0, reset MAC, release the configuration of all the secondary cells of the primary cell group, and release the configuration of the primary and secondary cells.
- the terminal device 400 further includes: a second sending unit 403 configured to send an RRC connection re-establishment request message to the network device corresponding to the selected cell.
- the embodiment of the present application also provides a terminal device.
- a terminal device Another optional structural schematic diagram of the terminal device. As shown in FIG. 9, the terminal device 500 includes:
- the second processing unit 501 is configured to restore the signaling radio bearer SRB1 when the cell selected by the terminal device for connection reestablishment is a candidate cell for conditional handover.
- the terminal device 500 has been configured with the candidate cell for conditional handover.
- the terminal device 500 further includes:
- the third sending unit 502 is configured to send an RRC reconfiguration complete message to the network device corresponding to the selected cell based on the SRB1.
- the second processing unit 501 is further configured to perform cell access based on conditional handover based on the conditional handover configuration of the candidate cell.
- conditional handover configuration of the candidate cell includes: a complete configuration of the conditional handover of the candidate cell.
- An embodiment of the present application further provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the above-mentioned terminal device when the computer program is running. Steps of the connection reconstruction method.
- An embodiment of the present application also provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the connection reconstruction method performed by the terminal device.
- An embodiment of the present application also provides a storage medium storing an executable program, and the executable program is executed by a processor to implement the connection re-establishment method executed by the terminal device.
- An embodiment of the present application also provides a computer program product, including computer program instructions, which cause a computer to execute the connection re-establishment method performed by the terminal device.
- the embodiment of the present application also provides a computer program that enables a computer to execute the connection re-establishment method performed by the terminal device.
- FIG. 10 is a schematic diagram of the hardware composition structure of a terminal device according to an embodiment of the present application.
- the terminal device 700 includes: at least one processor 701, a memory 702, and at least one network interface 704.
- the various components in the terminal device 700 are coupled together through the bus system 705.
- the bus system 705 is used to implement connection and communication between these components.
- the bus system 705 also includes a power bus, a control bus, and a status signal bus.
- various buses are marked as the bus system 705 in FIG. 10.
- the memory 702 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory.
- the non-volatile memory can be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), and electrically erasable Programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), magnetic random access memory (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface memory, optical disc, or CD -ROM, Compact Disc Read-Only Memory); Magnetic surface memory can be disk storage or tape storage.
- the volatile memory may be a random access memory (RAM, Random Access Memory), which is used as an external cache.
- RAM random access memory
- SRAM static random access memory
- SSRAM synchronous static random access memory
- Synchronous Static Random Access Memory Synchronous Static Random Access Memory
- DRAM Dynamic Random Access Memory
- SDRAM Synchronous Dynamic Random Access Memory
- DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
- ESDRAM Enhanced Synchronous Dynamic Random Access Memory
- SLDRAM synchronous connection dynamic random access memory
- DRRAM Direct Rambus Random Access Memory
- the memory 702 described in the embodiment of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
- the memory 702 in the embodiment of the present application is used to store various types of data to support the operation of the terminal device 700. Examples of these data include: any computer program used to operate on the terminal device 700, such as an application program 7022. The program for implementing the method of the embodiment of this application may be included in the application 7022.
- the method disclosed in the foregoing embodiment of the present application may be applied to the processor 701 or implemented by the processor 701.
- the processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 701 or instructions in the form of software.
- the aforementioned processor 701 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like.
- the processor 701 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application.
- the general-purpose processor may be a microprocessor or any conventional processor or the like.
- the steps of the method disclosed in the embodiments of the present application may be directly embodied as execution and completion by a hardware decoding processor, or execution and completion by a combination of hardware and software modules in the decoding processor.
- the software module may be located in a storage medium, and the storage medium is located in the memory 702.
- the processor 701 reads the information in the memory 702 and completes the steps of the foregoing method in combination with its hardware.
- the terminal device 700 may be configured by one or more application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, programmable logic device (PLD, Programmable Logic Device), and complex programmable logic device (CPLD). , Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, MPU, or other electronic components to implement the foregoing method.
- ASIC Application Specific Integrated Circuit
- DSP digital signal processor
- PLD programmable logic device
- CPLD complex programmable logic device
- FPGA field-programmable logic device
- controller MCU
- MPU MPU
- the embodiment of the present application also provides a storage medium for storing computer programs.
- the storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process in each method executed by the terminal device in the embodiment of the present application.
- the computer program causes the computer to execute the corresponding process in each method executed by the terminal device in the embodiment of the present application.
- the storage medium can be applied to the source network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding procedures in each method executed by the source network device in the embodiment of the present application.
- the computer program causes the computer to execute the corresponding procedures in each method executed by the source network device in the embodiment of the present application.
- These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
- the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
- These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
- the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
- system and “network” in this application are often used interchangeably herein.
- the term “and/or” in this application is only an association relationship describing the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, and both A and B exist at the same time. There are three cases of B.
- the character "/" in this application generally indicates that the associated objects before and after are in an "or” relationship.
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Abstract
Description
Claims (38)
- 一种连接重建方法,所述方法包括:终端设备在连接重建过程中,禁止执行下述中的至少一种:挂起除信令无线承载SRB0以外的所有无线承载RB;重置媒体接入控制MAC;释放主小区组的所有辅小区的配置;释放主辅小区的配置。
- 根据权利要求1所述的方法,其中,所述禁止执行包括:忽略、或跳过、或取消。
- 根据权利要求1或2所述的方法,其中,所述方法还包括:所述终端设备选择接入的小区。
- 根据权利要求1至3任一项所述的方法,其中,所述终端设备已配置了基于条件切换的候选小区。
- 根据权利要求1至4任一项所述的方法,其中,在所述终端设备进行连接重建所选择的小区为基于条件切换的候选小区的情况下,所述方法还包括:所述终端设备基于所述候选小区的条件切换配置,执行基于条件切换的小区接入。
- 根据权利要求5所述的方法,其中,所述方法还包括:所述终端设备向所述选择的小区对应的网络设备发送无线资源控制RRC重配置完成消息。
- 根据权利要求5或6所述的方法,其中,所述候选小区的条件切换配置包括:所述候选小区的条件切换的完整配置,或所述候选小区的条件切换的增量配置。
- 根据权利要求1至4任一项所述的方法,其中,在所述终端设备进行连接重建所选择的小区不是基于条件切换的候选小区的情况下,所述方法还包括:所述终端设备执行下述中的至少一种:挂起除SRB0以外的所有RB;重置MAC;释放主小区组的所有辅小区的配置;释放主辅小区的配置。
- 根据权利要求8所述的方法,其中,所述方法还包括:所述终端设备向所述选择的小区对应的网络设备发送RRC连接重建请求消息。
- 一种连接重建方法,所述方法包括:在终端设备进行连接重建所选择的小区为基于条件切换的候选小区的情况下,所述终端设备恢复信令无线承载SRB1。
- 根据权利要求10所述的方法,其中,所述终端设备已配置了所述基于条件切换的候选小区。
- 根据权利要求10或11所述的方法,其中,所述方法还包括:所述终端设备基于所述SRB1向所述选择的小区对应的网络设备发送RRC重配置完成消息。
- 根据权利要求10至12任一项所述的方法,其中,所述方法还包括:所述终端设备基于所述候选小区的条件切换配置,执行基于条件切换的小区接入。
- 根据权利要求13所述的方法,其中,所述候选小区的条件切换配置包括:所述候选小区的条件切换的完整配置。
- 一种终端设备,所述终端设备包括:第一处理单元,配置为在连接重建过程中,禁止执行下述中的至少一种:挂起除信令无线承载SRB0以外的所有无线承载RB;重置媒体接入控制MAC;释放主小区组的所有辅小区的配置;释放主辅小区的配置。
- 根据权利要求15所述的终端设备,其中,所述禁止执行包括:忽略、或跳过、或取消。
- 根据权利要求15或16所述的终端设备,其中,所述第一处理单元,还配置为选择接入的小区。
- 根据权利要求15至17任一项所述的终端设备,其中,所述终端设备已配置了基于条件切换的候选小区。
- 根据权利要求15至18任一项所述的终端设备,其中,所述第一处理单元,还配置为在所述终端设备进行连接重建所选择的小区为基于条件切换的候选小区的情况下,基于所述候选小区的条件切换配置,执行基 于条件切换的小区接入。
- 根据权利要求19所述的终端设备,其中,所述终端设备还包括:第一发送单元,配置为向所述选择的小区对应的网络设备发送无线资源控制RRC重配置完成消息。
- 根据权利要求19或20所述的终端设备,其中,所述候选小区的条件切换配置包括:所述候选小区的条件切换的完整配置,或所述候选小区的条件切换的增量配置。
- 根据权利要求15至17任一项所述的终端设备,其中,所述第一处理单元,还配置为在所述终端设备进行连接重建所选择的小区不是基于条件切换的候选小区的情况下,执行下述中的至少一种:挂起除SRB0以外的所有RB;重置MAC;释放主小区组的所有辅小区的配置;释放主辅小区的配置。
- 根据权利要求22所述的终端设备,其中,所述终端设备还包括:第二发送单元,配置为向所述选择的小区对应的网络设备发送RRC连接重建请求消息。
- 一种终端设备,所述终端设备包括:第二处理单元,配置为在终端设备进行连接重建所选择的小区为基于条件切换的候选小区的情况下,恢复信令无线承载SRB1。
- 根据权利要求24所述的终端设备,其中,所述终端设备已配置了所述基于条件切换的候选小区。
- 根据权利要求24或25所述的终端设备,其中,所述终端设备还包括:第三发送单元,配置为基于所述SRB1向所述选择的小区对应的网络设备发送无线资源控制RRC重配置完成消息。
- 根据权利要求24至26任一项所述的终端设备,其中,所述第二处理单元,还配置为基于所述候选小区的条件切换配置,执行基于条件切换的小区接入。
- 根据权利要求27所述的终端设备,其中,所述候选小区的条件切换配置包括:所述候选小区的条件切换的完整配置。
- 一种终端设备,包括处理器和用于存储能够在处理器上运行的计算机程序的存储器,其中,所述处理器用于运行所述计算机程序时,执行权利要求1至9任一项所述的连接重建方法的步骤。
- 一种终端设备,包括处理器和用于存储能够在处理器上运行的计算机程序的存储器,其中,所述处理器用于运行所述计算机程序时,执行权利要求10至14任一项所述的连接重建方法的步骤。
- 一种存储介质,存储有可执行程序,所述可执行程序被处理器执行时,实现权利要求1至9任一项所述的连接重建方法。
- 一种存储介质,存储有可执行程序,所述可执行程序被处理器执行时,实现权利要求10至14任一项所述的连接重建方法。
- 一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至9任一项所述的连接重建方法。
- 一种计算机程序产品,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求10至14任一项所述的连接重建方法。
- 一种计算机程序,所述计算机程序使得计算机执行如权利要求1至9任一项所述的连接重建方法。
- 一种计算机程序,所述计算机程序使得计算机执行如权利要求10至14任一项所述的连接重建方法。
- 一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求1至9任一项所述的连接重建方法。
- 一种芯片,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求10至14任一项所述的连接重建方法。
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2019
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- 2019-11-29 KR KR1020217043293A patent/KR20220106038A/ko unknown
- 2019-11-29 MX MX2021015924A patent/MX2021015924A/es unknown
- 2019-11-29 CN CN202111409046.5A patent/CN114125969B/zh active Active
- 2019-11-29 EP EP19954182.2A patent/EP3930418B1/en active Active
- 2019-11-29 CN CN201980093902.5A patent/CN113557790A/zh active Pending
- 2019-11-29 WO PCT/CN2019/121846 patent/WO2021102879A1/zh unknown
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CN114125969B (zh) | 2023-06-13 |
CN114125969A (zh) | 2022-03-01 |
EP3930418B1 (en) | 2023-08-09 |
EP3930418A1 (en) | 2021-12-29 |
US12058758B2 (en) | 2024-08-06 |
EP3930418A4 (en) | 2022-03-23 |
JP7514262B2 (ja) | 2024-07-10 |
MX2021015924A (es) | 2022-01-31 |
US20220015177A1 (en) | 2022-01-13 |
JP2023508804A (ja) | 2023-03-06 |
BR112021026613A2 (pt) | 2022-06-21 |
KR20220106038A (ko) | 2022-07-28 |
CN113557790A (zh) | 2021-10-26 |
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