WO2021102879A1 - 一种连接重建方法、终端设备及存储介质 - Google Patents

一种连接重建方法、终端设备及存储介质 Download PDF

Info

Publication number
WO2021102879A1
WO2021102879A1 PCT/CN2019/121846 CN2019121846W WO2021102879A1 WO 2021102879 A1 WO2021102879 A1 WO 2021102879A1 CN 2019121846 W CN2019121846 W CN 2019121846W WO 2021102879 A1 WO2021102879 A1 WO 2021102879A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal device
cell
configuration
conditional handover
connection
Prior art date
Application number
PCT/CN2019/121846
Other languages
English (en)
French (fr)
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 BR112021026613A priority Critical patent/BR112021026613A2/pt
Priority to CN201980093902.5A priority patent/CN113557790A/zh
Priority to MX2021015924A priority patent/MX2021015924A/es
Priority to CN202111409046.5A priority patent/CN114125969B/zh
Priority to EP19954182.2A priority patent/EP3930418B1/en
Priority to KR1020217043293A priority patent/KR20220106038A/ko
Priority to PCT/CN2019/121846 priority patent/WO2021102879A1/zh
Priority to JP2021577514A priority patent/JP7514262B2/ja
Publication of WO2021102879A1 publication Critical patent/WO2021102879A1/zh
Priority to US17/482,396 priority patent/US12058758B2/en

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H04W36/0038Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information of security context information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/34Reselection control
    • H04W36/36Reselection control by user or terminal equipment
    • H04W36/362Conditional handover
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/19Connection re-establishment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • H04W36/083Reselecting 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请公开了一种连接重建方法,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和释放主辅小区的配置。本申请还公开了另一种连接重建方法、终端设备及存储介质。

Description

一种连接重建方法、终端设备及存储介质 技术领域
本申请涉及无线通信技术领域,尤其涉及一种连接重建方法、终端设备及存储介质。
背景技术
相关技术中,终端设备(User Equipment,UE)在连接重建过程中,若待接入的小区为基于条件的小区切换(Conditional HandOver,CHO)的小区,终端设备如何进行连接重建尚未被明确。
发明内容
为解决上述技术问题,本申请实施例提供一种连接重建方法、终端设备及存储介质,明确了待接入的小区为CHO的小区的情况下,终端设备如何进行连接重建。
第一方面,本申请实施例提供一种连接重建方法,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和释放主辅小区的配置。
第二方面,本申请实施例提供一种连接重建方法,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SRB1。
第三方面,本申请实施例提供一种终端设备,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、和释放主辅小区的配置。
第四方面,本申请实施例提供一种终端设备,所述终端包括: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SRB1。
第五方面,本申请实施例提供一种终端设备,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,执行上述终端设备执行的连接重建方法的步骤。
第六方面,本申请实施例提供一种芯片,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上述终端设备执行的连接重建方法。
第七方面,本申请实施例提供一种存储介质,存储有可执行程序,所述可执行程序被处理器执行时,实现上述终端设备执行的连接重建方法。
第八方面,本申请实施例提供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上述终端设备执行的连接重建方法。
第九方面,本申请实施例提供一种计算机程序,所述计算机程序使得计算机执行上述终端设备执行的连接重建方法。
本申请实施例提供的连接重建方法、终端设备及存储介质,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、和释放主辅小区的配置。如此,使得终端设备在连接重建过程中待接入的小区为CHO的小区时,终端设备能够利用未释放的主小区组的所有辅小区的配置或未释放的主辅小区的配置执行CHO的小区接入;并在CHO的小区接入完成后,利用未被挂起的SRB1发送RRC重配置完成消息;进而实现连接重建和小区接入。
附图说明
图1为本申请小区切换的流程示意图;
图2为本申请CHO的切换流程示意图;
图3为本申请实施例通信系统的组成结构示意图;
图4为本申请实施例连接重建方法的一种可选处理流程示意图;
图5为本申请实施例连接重建方法的一种整体流程示意图;
图6为本申请实施例连接重建方法的另一种可选处理流程示意图;
图7为本申请实施例连接重建方法的另一种整体流程示意图;
图8为本申请实施例终端设备的一种可选组成结构示意图;
图9为本申请实施例终端设备的另一种可选组成结构示意图;
图10为本申请实施例终端设备的硬件组成结构示意图。
具体实施方式
为了能够更加详尽地了解本申请实施例的特点和技术内容,下面结合附图对本申请实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本申请实施例。
在对本申请实施例提供的连接重建方法进行详细说明之前,先对相关技术中小区切换过程进行简要说明。
当前,随着人们对速率、延迟、高速移动性、能效的追求以及未来生活中业务的多样性和复杂性,3GPP国际标准组织开始研发5G。5G的主要应用场景为:增强移动超宽带(Enhance Mobile Broadband,eMBB)、低时延高可靠通信(Ultra Reliable Low Latency Communications,URLLC)、和大规模机器类通信(Massive Machine Type Communication,mMTC)。
eMBB仍然以用户获得多媒体内容、服务和数据为目标,其需求增长十分迅速。另一方面,由于eMBB可能部署在不同的场景中,便如室内,市区,农村等,其能力和需求的差别也比较大,所以不能一概而论,必须结合具体的部署场景详细分析。URLLC的典型应用包括:工业自动化,电力自动化,远程医疗操作(手术),交通安全保障等。mMTC的典型特点包括:高连接密度,小数据量,时延不敏感业务,模块的低成本和长使用寿命等。
新无线(New Radio,NR)系统也可以独立部署,为了降低空口信令、快速恢复无线连接和快速恢复数据业务,定义了新的无线资源控制(Radio Resource Control,RRC)状态,即RRC-Inactive(去激活)状态。其中,RRC-Idle(空闲)状态下,移动性为基于终端设备的小区重选,寻呼过程由核心网(Core Network,CN)发起,寻呼区域由CN配置。网络设备侧不存在终端设备上下文,也不存在RRC连接。RRC-Inactive状态下,移动性为基于终端设备的小区重选,存在CN-NR之间的连接,终端设备上下文存在于某个网络设备上,寻呼过程由无线接入网(Radio Access Network,RAN)触发,基于RAN的寻呼区域由RAN管理,网络设备能够知道终端设备的位置是基于RAN的寻呼区域级别的。RRC-Connected(连接)状态下,存在RRC连接,网络设备和终端设备之间存在终端设备上下文,网络设备知道终端设备的位置是具体小区级别的;移动性是网络设备控制的移动性,网络设备与终端设备之间可以传输单播数据。
处于RRC-Connected状态的终端设备出现链路切换失败、或者无线链路失败、或者完整性保护失败、或者RRC重配置失败等情况时,若终端设 备已经建立了SRB2和(Data Resource Bearer,DRB),终端设备可以触发RRC连接重建过程。
终端设备执行RRC连接重建需要执行小区选择,即选择接入的小区;终端设备启动定时器T311;若T311超时、或者重选到inter-RAT cell,则终端设备回到RRC-idle状态。
RRC连接重建请求消息:终端设备通过上行公共控制信道(UpLink Common Control Channel,UL_CCCH)在SRB0上发送RRC连接重建请求消息;所述RRC连接重建请求消息中可以携带终端设备的(Access Stratum,AS)层初始标识信息、Short MAC-I及重建立原因;所述RRC连接重建请求消息对应随机接入过程中的消息3(Msg3)。终端设备发送完所述RRC连接重建请求消息之后,激活安全并生成秘钥,恢复SRB1等待接收MSG4。
RRC连接重建:网络设备通过下行专用控制信道(DownLink Dedicated Control Channel,DL_DCCH)在SRB1上回复所述RRC连接重建请求消息;所述网络设备回复的消息不携带任何实际信息(除了色码(National Colour Code,NCC));所述网络设备回复的消息对应随机接入过程中的Msg4。其中,MSG4用于进行完整性保护。
RRC连接重建立完成消息:终端设备通过上行专用控制信道(UpLink Dedicated Control Channel,UL-DCCH)在SRB1上发送RRC连接重建立完成消息;所述RRC连接重建立完成消息不携带任何实际信息,起到RRC层确认的功能;所述RRC连接重建立完成消息对应随机接入过程中的MSG5;其中,MSG5用于进行加密和完整性保护。
在RRC连接重建过程中,可能会出现RRC连接重建立失败、或RRC连接重建请求定时器T301超时,或者选择的小区不合适、或RRC连接重建消息(MSG4)完整性保护验证失败等。基于上述原因导致的RRC连接重建失败的情况下,终端设备回到RRC_IDLE状态。
如果网络设备中没有终端设备的上下文信息,则网络设备通过DL_CCCH在SRB0上回复一条RRC连接建立消息。网络设备收到网络设备发送的该消息后,删除之前的上下文,执行RRC连接建立过程。
下面再对小区切换过程进行简要描述。
与LTE系统相似,新无线(New Ration,NR)系统支持连接态终端设备的切换过程。当正在使用网络服务的终端设备从一个小区移动到另一个小区,或由于无线传输业务负荷量调整、激活操作维护、设备故障等原因,为了保证通信的连续性和服务的质量,系统要将该终端设备与原小区的通 信链路转移到新的小区上,即执行切换过程。
以Xn接口切换过程为例,适用于LTE系统以及NR系统的小区切换过程,如图1所示,分为以下三个阶段:
阶段1(包括步骤1至5),切换准备:包括测量控制和汇报,切换请求以及确认。
阶段2(包括步骤6至8),切换执行:终端设备在收到切换命令后立即执行切换过程,即终端设备断开源小区并与目标小区连接(如执行随机接入,发送RRC切换完成消息给目标网络设备等);辅节点(Secondary Node,SN)状态转移,数据转发。
阶段3(包括步骤9至12),切换完成:目标小区与(Acess and Mobility Management Function,AMF)和用户面功能(User Port Function,UPF)执行路径切换(Path Switch),释放源网络设备的终端设备上下文。
终端设备在接收到切换命令后立即启动T304定时器,并开始将下行数据同步到目标小区,获取目标小区的主信息块(Master Information Block,MIB)信息,再发起随机接入过程。随机接入过程中允许多次前导码(preamble)重传,直至随机接入成功。如T304定时器超时,则小区切换失败,终端设备触发RRC连接重建过程。
下面对CHO进行简要说明。
针对高速移动场景和高频部署场景存在频繁切换以及切换容易失败的问题,3GPP当前正在讨论为LTE和NR系统引入CHO。CHO的切换流程,如图2所示,终端设备根据源网络设备发送的目标小区的配置信息和测量配置进行小区测量、配置和报告;源网络设备和目标网络设备进行切换准备;在终端设备判断满足针对目标小区的CHO的切换执行条件的情况下,终端设备按照预先配置的CHO命令(command)执行向目标小区的切换(如触发随机接入过程和发送切换完成消息),进而建立与目标网络设备的连接。在CHO过程中,通过为终端设备提前配置CHO command,避免了由于终端设备高速移动进入覆盖性差的区域,导致来不及或无法发送测量上报和无法接收切换命令的问题。其中,CHO command包括目标小区的配置信息和CHO的切换执行条件配置;CHO的切换执行条件配置由源网络设备确定,源网络设备将确定的CHO的切换执行条件配置通过无线资源控制(Radio Resource Control,RRC)消息发送至终端设备。
3GPP RAN2#106次会议关于失败恢复的过程有以下结论:
1、无线链路失败时,终端设备执行小区选择;如果选择的小区是CHO 的候选小区,则终端设备尝试执行CHO的小区切换;否则,终端设备执行连接重建过程。
2、传统的切换失败(例如T304超时)或者CHO候选小区接入失败(例如T304-like超时)的情况下,终端设备执行CHO的小区切换;否则,终端设备执行连接重建过程。
RRC连接重建过程可以包括如下四个步骤:
1、连接重建初始化;2、发送RRC重建请求消息(Msg3);3、接收RRC重建消息(Msg4);4、发送RRC重建完成消息(Msg4)。
其中,连接重建初始化可以包括下述中的至少一种:停止运行的T310定时器和/或T304、启动定时器T311、挂起除SRB0之外的所有RB、重置媒体接入控制(Media Access Control,MAC)、释放所有的主小区组(Master Cell Group,MCG)的辅小区(Secondary Cell,SCell)的配置、和释放主辅小区的配置(spCellConfig)等。终端设备在执行完连接重建初始化之后,再执行小区选择过程,所述小区选择过程用于终端设备选择待接入的小区。连接重建初始化可以描述为如下方式:
Upon initiation of the procedure,the UE shall:
1>stop timer T310,if running;
1>stop timer T304,if running;
1>start timer T311;
1>suspend all RBs,except SRB0;
1>reset MAC;
1>release the MCG SCell(s),if configured;
1>release spCellConfig,if configured;
1>if MR-DC is configured:
2>perform MR-DC release,as specified in clause 5.3.5.10;
2>release p-NR-FR1,if configured;
2>release p-UE-FR1,if configured;
1>release delayBudgetReportingConfig,if configured,and stop timer T342,if running;
1>release overheatingAssistanceConfig,if configured,and stop timer T345,if running;
1>perform cell selection in accordance with the cell selection process as specified in TS 38.304[20],clause 5.2.6.
若终端设备选择待接入的小区为基于条件切换的候选小区的情况下,已有的连接重建初始化过程将导致终端设备所选择的候选小区无法接入。 举例来说,在CHO的小区接入过程中,终端设备需要在完成小区接入的情况下,使用信令无线承载(Signalling Radio Bearer,SRB1)来传输RRC重配置完成消息;但是,已有的连接重建初始化过程中终端设备已经挂起除SRB0以外的所有无线承载(Radio Bearer,RB),即SRB1也被挂起,则终端设备无法使用SRB1传输RRC重配置完成消息。再举例说明,已有的连接重建初始化过程中,终端设备释放MCG的SCell和主辅小区配置(spCellConfig)后,如果终端设备之前保留的用于小区接入的CHO的候选小区的配置为基于MCG的SCell或spCellConfig的增量配置,在释放MCG的SCell和spCellConfig的情况下,终端设备将无法获知用于小区接入的CHO的候选小区的完整配置,终端设备也无法执行CHO的小区接入。
本申请实施例提供一种连接重建方法,本申请实施例的连接重建方法可以应用于各种通信系统,例如:全球移动通讯(global system of mobile communication,GSM)系统、码分多址(code division multiple access,CDMA)系统、宽带码分多址(wideband code division multiple access,WCDMA)系统、通用分组无线业务(general packet radio service,GPRS)、长期演进(long term evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)系统、先进的长期演进(advanced long term evolution,LTE-A)系统、新无线(new radio,NR)系统、NR系统的演进系统、非授权频段上的LTE(LTE-based access to unlicensed spectrum,LTE-U)系统、非授权频段上的NR(NR-based access to unlicensed spectrum,NR-U)系统、通用移动通信系统(universal mobile telecommunication system,UMTS)、全球互联微波接入(worldwide interoperability for microwave access,WiMAX)通信系统、无线局域网(wireless local area networks,WLAN)、无线保真(wireless fidelity,WiFi)、下一代通信系统或其他通信系统等。
通常来说,传统的通信系统支持的连接数有限,也易于实现,然而,随着通信技术的发展,移动通信系统将不仅支持传统的通信,还将支持例如,设备到设备(device to device,D2D)通信,机器到机器(machine to machine,M2M)通信,机器类型通信(machine type communication,MTC),以及车辆间(vehicle to vehicle,V2V)通信等,本申请实施例也可以应用于这些通信系统。
本申请实施例描述的系统架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案,并不构成对于本申请实施例提供的技术方案的限 定,本领域普通技术人员可知,随着网络架构的演变和新业务场景的出现,本申请实施例提供的技术方案对于类似的技术问题,同样适用。
本申请实施例中涉及的网络设备,可以是普通的基站(如NodeB或eNB或者gNB)、新无线控制器(new radio controller,NR controller)、集中式网元(centralized unit)、新无线基站、射频拉远模块、微基站、中继(relay)、分布式网元(distributed unit)、接收点(transmission reception point,TRP)、传输点(transmission point,TP)或者任何其它设备。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。为方便描述,本申请所有实施例中,上述为终端设备提供无线通信功能的装置统称为网络设备。
在本申请实施例中,终端设备可以是任意的终端,比如,终端设备可以是机器类通信的用户设备。也就是说,该终端设备也可称之为用户设备UE、移动台(mobile station,MS)、移动终端(mobile terminal)、终端(terminal)等,该终端设备可以经无线接入网(radio access network,RAN)与一个或多个核心网进行通信,例如,终端设备可以是移动电话(或称为“蜂窝”电话)、具有移动终端的计算机等,例如,终端设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语言和/或数据。本申请实施例中不做具体限定。
可选的,网络设备和终端设备可以部署在陆地上,包括室内或室外、手持或车载;也可以部署在水面上;还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对网络设备和终端设备的应用场景不做限定。
可选的,网络设备和终端设备之间以及终端设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信,也可以通过非授权频谱(unlicensed spectrum)进行通信,也可以同时通过授权频谱和非授权频谱进行通信。网络设备和终端设备之间以及终端设备和终端设备之间可以通过7吉兆赫(gigahertz,GHz)以下的频谱进行通信,也可以通过7GHz以上的频谱进行通信,还可以同时使用7GHz以下的频谱和7GHz以上的频谱进行通信。本申请的实施例对网络设备和终端设备之间所使用的频谱资源不做限定。
通常来说,传统的通信系统支持的连接数有限,也易于实现,然而,随着通信技术的发展,移动通信系统将不仅支持传统的通信,还将支持例如,设备到设备(device to device,D2D)通信,机器到机器(machine to machine,M2M)通信,机器类型通信(machine type communication,MTC),以及车辆间(vehicle to vehicle,V2V)通信等,本申请实施例也可以应用 于这些通信系统。
示例性的,本申请实施例应用的通信系统100,如图3所示。该通信系统100可以包括网络设备110,网络设备110可以是与终端设备120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端设备进行通信。可选地,该网络设备110可以是GSM系统或CDMA系统中的基站(Base Transceiver Station,BTS),也可以是WCDMA系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(Evolutional Node B,eNB或eNodeB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。作为在此使用的“终端设备”包括但不限于经由有线线路连接,如经由公共交换电话网络(Public Switched Telephone Networks,PSTN)、数字用户线路(Digital Subscriber Line,DSL)、数字电缆、直接电缆连接;和/或另一数据连接/网络;和/或经由无线接口,如,针对蜂窝网络、无线局域网(Wireless Local Area Network,WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器;和/或另一终端设备的被设置成接收/发送通信信号的装置;和/或物联网(Internet of Things,IoT)设备。被设置成通过无线接口通信的终端设备可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话;可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System,PCS)终端;可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System,GPS)接收器的PDA;以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端设备可以指接入终端、用户设备(User Equipment,UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)、 具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
可选地,终端设备120之间可以进行终端直连(Device to Device,D2D)通信。
可选地,5G系统或5G网络还可以称为新无线(New Radio,NR)系统或NR网络。
图3示例性地示出了一个网络设备和两个终端设备,可选地,该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备,本申请实施例对此不做限定。
可选地,该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体,本申请实施例对此不作限定。
应理解,本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图3示出的通信系统100为例,通信设备可包括具有通信功能的网络设备110和终端设备120,网络设备110和终端设备120可以为上文所述的具体设备,此处不再赘述;通信设备还可包括通信系统100中的其他设备,例如网络控制器、移动管理实体等其他网络实体,本申请实施例中对此不做限定。
本申请实施例提供的连接重建方法的一种可选处理流程,如图4所示,包括以下步骤:
步骤S201,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以及释放主辅小区的配置。
在一些实施例中,所述禁止执行可以是忽略,也可以是跳过,还可以是取消。所述终端设备禁止执行挂起除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以及释放主辅小区的配置中至少一种的条件可以是终端设备已配置了基于条件切换的候选小区。
在一些实施例中,触发终端设备进行连接重建的条件可以是:CHO候选小区接入失败、无线链路失败、或传统的小区切换失败等;其中,传统的小区切换是指非CHO的小区切换。
本申请实施例提供的连接重建方法还可以包括:
步骤S202,终端设备选择接入的小区。
在一些实施例中,若终端设备选择的小区为CHO的候选小区,本申请 实施例提供的连接重建方法还可以包括:
步骤S203,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。
终端设备在基于条件切换的小区接入完成后,本申请实施例提供的连接重建方法还可以包括:
步骤S204,终端设备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。
其中,所述候选小区的条件切换配置为终端设备已经存储的配置,所述候选小区的条件切换配置可以包括所述候选小区的条件切换的完整配置,所述候选小区的条件切换配置也可以包括所述候选小区的条件切换的增量配置。在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的情况下,所述终端设备能够直接根据所述候选小区的条件切换的完整配置进行小区接入。在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增量配置的情况下,由于在步骤S201中所述终端设备禁止释放主小区组的所有辅小区的配置以及释放主辅小区的配置,因此所述终端设备能够基于所述主小区组的所有辅小区的配置和/或释放主辅小区的配置获取所述候选小区的条件切换的完整配置,并根据所述候选小区的条件切换的完整配置进行小区接入。由于在步骤S201中所述终端设备禁止挂起除SRB0以外的所有RB,即SRB1未被挂起,因此终端设备能够基于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。如此,使得在待接入的小区为CHO的小区的情况下,终端设备也能够进行连接重建。
在另一些实施例中,若终端设备选择的小区不是CHO的候选小区,则终端设备在向所述选择的小区对应的网络设备发送RRC重建请求消息之前,可以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以及释放主辅小区的配置。其中,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以及释放主辅小区的配置之间不存在执行的先后顺序。
基于本申请实施例提供的连接重建方法,TS 38.331标准协议中的相关部分可描述为:
5.3.7.2 Initiation
<omitted unchanged text>
Upon initiation of the procedure,the UE shall:
1>stop timer T310,if running;
1>stop timer T304,if running;
1>start timer T311;
1>if UE is not configured with cho-RRCReconfig:
2>suspend all RBs,except SRB0;
2>reset MAC;
2>release the MCG SCell(s),if configured;
2>release spCellConfig,if configured;
1>if MR-DC is configured:
2>perform MR-DC release,as specified in clause 5.3.5.10;
2>release p-NR-FR1,if configured;
2>release p-UE-FR1,if configured;
1>release delayBudgetReportingConfig,if configured,and stop timer T342,if running;
1>release overheatingAssistanceConfig,if configured,and stop timer T345,if running;
1>perform cell selection in accordance with the cell selection process as specified in TS 38.304[20],clause 5.2.6.
5.3.7.3 Actions following cell selection while T311 is running
Upon selecting a suitable NR cell,the UE shall:
1>ensure having valid and up to date essential system information as specified in clause 5.2.2.2;
1>stop timer T311;
1>if the selected cell is one of the target candidate cells in VarCHO-Config:
2>apply the stored cho-RRCReconfig associated to the selected cell and perform the actions as specified in 5.3.5.3;
1>else:
2>suspend all RBs,except SRB0;
2>reset MAC;
2>release the MCG SCell(s),if configured;
2>release spCellConfig,if configured;
2>start timer T301;
2>if T390 is running:
3>stop timer T390 for all access categories;
3>perform the actions as specified in 5.3.14.4;
2>remove all the entries within VarCHO-Config,if any
2>apply the default L1 parameter values as specified in corresponding physical layer specifications except for the parameters for which  values are provided in SIB1;
2>apply the default MAC Cell Group configuration as specified in 9.2.2;
2>apply the CCCH configuration as specified in 9.1.1.2;
2>apply the timeAlignmentTimerCommon included in SIB1;
2>initiate transmission of the RRCReestablishmentRequest message in accordance with 5.3.7.4;
NOTE:This procedure applies also if the UE returns to the source PCell.
Upon selecting an inter-RAT cell,the UE shall:
1>perform the actions upon going to RRC_IDLE as specified in 5.3.11,with release cause'RRC connection failure'.
下面将挂起除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以及释放主辅小区的配置中的部分或全部作为连接重建初始化过程,对本申请实施例提供的终端设备的连接重建过程进行整体描述,如图5所示:
无线链路失败、小区切换失败或CHO的小区切换失败触发终端设备进行RRC连接重建。若终端设备未配置CHO的候选小区,则终端设备执行已有的连接重建过程(包括连接重建初始化过程)。若终端设备已配置CHO的候选小区,则终端设备跳过或取消或忽略所述连接重建初始化过程,执行小区选择过程。若终端设备选择的待接入小区不是CHO的候选小区,则终端设备执行所述连接重建初始化过程,并向所述选择的小区对应的网络设备发送RRC重建请求消息,接收所述选择的小区对应的网络设备发送的RRC重建请求响应消息。若终端设备选择的待接入小区是CHO的候选小区,则终端设备执行CHO的小区接入,并在CHO的小区接入完成后,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。
本申请实施例提供的连接重建方法的一种可选处理流程,如图6所示,包括以下步骤:
步骤S301,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SRB1。
在一些实施例中,若所述终端设备已配置了所述基于条件切换的候选小区,且所述终端设备选择的待接入的小区为CHO的候选小区,则所述连接重建方法还可以包括:
步骤S300,所述终端设备基于候选小区的条件切换配置,执行CHO的小区接入。
在一些实施例中,所述候选小区的条件切换配置可以包括:所述候选小区的条件切换的完整配置。
如此,即便终端设备释放主小区组的所有辅小区的配置以及主辅小区的配置,终端设备依旧能够根据已经存储的候选小区的条件切换的完整配置进行小区接入。
步骤S302,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。
如此,终端设备通过恢复SRB1,使得终端设备能够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,进而实现连接重建以及小区接入。
在一些实施例中,若所述终端设备已配置了所述基于条件切换的候选小区,且所述终端设备选择的待接入的小区不是CHO的候选小区,则所述终端设备无需恢复SRB1,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。
需要说明的是,本申请实施例也适用于源网络设备没有为终端设备配置MCG SCells和spCellConfig的场景。应用本申请实施例,终端设备不需要更改连接重建初始化过程,即终端设备可以执行下述中的至少一项: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以及释放主辅小区的配置。
基于本申请实施例提供的连接重建方法,TS 38.331标准协议中的相关部分可描述为:
5.3.5.3 Reception of an RRCReconfiguration by the UE
<omitted unchanged text>
1>else(MCG RRCReconfiguration):
2>resume SRB1 that is suspended:
2>submit the RRCReconfigurationComplete message via SRB1 to lower layers for transmission using the new configuration;
2>if this is the first RRCReconfiguration message after successful completion of the RRC re-establishment procedure:
3>resume SRB2 and DRBs that are suspended;
下面对本申请实施例提供的终端设备的连接重建过程进行整体描述,如图7所示:
无线链路失败、小区切换失败或CHO的小区切换失败触发终端设备进行RRC连接重建。若终端设备未配置CHO的候选小区,则终端设备执行 所述连接重建初始化过程。若终端设备已配置CHO的候选小区,执行小区选择过程。若终端设备选择的待接入小区不是CHO的候选小区,则终端设备向所选择的小区对应的网络设备发送RRC重建请求消息。若终端设备选择的待接入小区是CHO的候选小区,则终端设备执行CHO的小区接入,并在CHO的小区接入完成后,恢复SRB1;终端设备基于SRB1向所选择的小区对应的网络设备发送RRC重配置完成消息。
为实现本申请实施例提供的连接重建方法,本申请实施例还提供一种终端设备,所述终端设备的一种可选组成结构示意图,如图8所示,所述终端设备400包括:
第一处理单元401,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以及释放主辅小区的配置。
在一些实施例中,所述禁止执行包括:忽略、或跳过、或取消。
在一些实施例中,所述第一处理单元401,还配置为选择接入的小区。
在一些实施例中,所述终端设备400已配置了基于条件切换的候选小区。
在一些实施例中,所述第一处理单元401,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。
在一些实施例中,所述终端设备400还包括:
第一发送单元402,配置为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。
在一些实施例中,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。
在一些实施例中,所述第一处理单元401,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和释放主辅小区的配置。
在一些实施例中,所述终端设备400还包括:第二发送单元403,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。
为实现本申请实施例提供的连接重建方法,本申请实施例还提供一种终端设备,所述终端设备的另一种可选组成结构示意图,如图9所示,所述终端设备500包括:
第二处理单元501,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。
在一些实施例中,所述终端设备500已配置了所述基于条件切换的候选小区。
在一些实施例中,所述终端设备500还包括:
第三发送单元502,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RRC重配置完成消息。
在一些实施例中,所述第二处理单元501,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。
在一些实施例中,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。
本申请实施例还提供一种终端设备,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,执行上述终端设备执行的连接重建方法的步骤。
本申请实施例还提供一种芯片,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上述终端设备执行的连接重建方法。
本申请实施例还提供一种存储介质,存储有可执行程序,所述可执行程序被处理器执行时,实现上述终端设备执行的连接重建方法。
本申请实施例还提供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上述终端设备执行的连接重建方法。
本申请实施例还提供一种计算机程序,所述计算机程序使得计算机执行上述终端设备执行的连接重建方法。
图10是本申请实施例的终端设备的硬件组成结构示意图,终端设备700包括:至少一个处理器701、存储器702和至少一个网络接口704。终端设备700中的各个组件通过总线系统705耦合在一起。可理解,总线系统705用于实现这些组件之间的连接通信。总线系统705除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见,在图10中将各种总线都标为总线系统705。
可以理解,存储器702可以是易失性存储器或非易失性存储器,也可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是ROM、可编程只读存储器(PROM,Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM,Erasable Programmable Read-Only Memory)、电 可擦除可编程只读存储器(EEPROM,Electrically Erasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM,ferromagnetic random access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM,Compact Disc Read-Only Memory);磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM,Random Access Memory),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(SRAM,Static Random Access Memory)、同步静态随机存取存储器(SSRAM,Synchronous Static Random Access Memory)、动态随机存取存储器(DRAM,Dynamic Random Access Memory)、同步动态随机存取存储器(SDRAM,Synchronous Dynamic Random Access Memory)、双倍数据速率同步动态随机存取存储器(DDRSDRAM,Double Data Rate Synchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM,Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM,SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM,Direct Rambus Random Access Memory)。本申请实施例描述的存储器702旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例中的存储器702用于存储各种类型的数据以支持终端设备700的操作。这些数据的示例包括:用于在终端设备700上操作的任何计算机程序,如应用程序7022。实现本申请实施例方法的程序可以包含在应用程序7022中。
上述本申请实施例揭示的方法可以应用于处理器701中,或者由处理器701实现。处理器701可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法的各步骤可以通过处理器701中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器701可以是通用处理器、数字信号处理器(DSP,Digital Signal Processor),或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。处理器701可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤,可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中,该存储介质位于存储器702,处理器701读取存储器702中的信息,结合其硬件 完成前述方法的步骤。
在示例性实施例中,终端设备700可以被一个或多个应用专用集成电路(ASIC,Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD,Programmable Logic Device)、复杂可编程逻辑器件(CPLD,Complex Programmable Logic Device)、FPGA、通用处理器、控制器、MCU、MPU、或其他电子元件实现,用于执行前述方法。
本申请实施例还提供了一种存储介质,用于存储计算机程序。
可选的,该存储介质可应用于本申请实施例中的终端设备,并且该计算机程序使得计算机执行本申请实施例终端设备执行的各个方法中的相应流程,为了简洁,在此不再赘述。
可选的,该存储介质可应用于本申请实施例中的源网络设备,并且该计算机程序使得计算机执行本申请实施例源网络设备执行的各个方法中的相应流程,为了简洁,在此不再赘述。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
应理解,本申请中术语“系统”和“网络”在本文中常被可互换使用。本申请中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单 独存在B这三种情况。另外,本申请中字符“/”,一般表示前后关联对象是一种“或”的关系。
以上所述,仅为本申请的较佳实施例而已,并非用于限定本申请的保护范围,凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本申请的保护范围之内。

Claims (38)

  1. 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。
  2. 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。
  3. 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。
  4. 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。
  5. 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。
  6. 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。
  7. 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。
  8. 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。
  9. 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。
  10. 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。
  11. 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。
  12. 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。
  13. 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。
  14. 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。
  15. 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。
  16. 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。
  17. 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。
  18. 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。
  19. 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。
  20. 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。
  21. 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。
  22. 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。
  23. 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。
  24. 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。
  25. 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。
  26. 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。
  27. 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。
  28. 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。
  29. 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。
  30. 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。
  31. 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。
  32. 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。
  33. 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。
  34. 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。
  35. 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。
  36. 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。
  37. 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。
  38. 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。
PCT/CN2019/121846 2019-11-29 2019-11-29 一种连接重建方法、终端设备及存储介质 WO2021102879A1 (zh)

Priority Applications (9)

Application Number Priority Date Filing Date Title
BR112021026613A BR112021026613A2 (pt) 2019-11-29 2019-11-29 Métodos de restabelecimento de conexão e dispositivos terminais
CN201980093902.5A CN113557790A (zh) 2019-11-29 2019-11-29 一种连接重建方法、终端设备及存储介质
MX2021015924A MX2021015924A (es) 2019-11-29 2019-11-29 Procedimientos de restablecimiento de conexion, dispositivos terminales y medio de almacenamiento.
CN202111409046.5A CN114125969B (zh) 2019-11-29 2019-11-29 一种连接重建方法、终端设备及存储介质
EP19954182.2A EP3930418B1 (en) 2019-11-29 2019-11-29 Link re-establishment method and terminal devices
KR1020217043293A KR20220106038A (ko) 2019-11-29 2019-11-29 연결 재확립 방법, 단말 장치 및 저장 매체
PCT/CN2019/121846 WO2021102879A1 (zh) 2019-11-29 2019-11-29 一种连接重建方法、终端设备及存储介质
JP2021577514A JP7514262B2 (ja) 2019-11-29 2019-11-29 接続再確立方法、端末装置及び記憶媒体
US17/482,396 US12058758B2 (en) 2019-11-29 2021-09-22 Method of connection reestablishment, terminal device, and non-transitory computer-readable storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/121846 WO2021102879A1 (zh) 2019-11-29 2019-11-29 一种连接重建方法、终端设备及存储介质

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/482,396 Continuation US12058758B2 (en) 2019-11-29 2021-09-22 Method of connection reestablishment, terminal device, and non-transitory computer-readable storage medium

Publications (1)

Publication Number Publication Date
WO2021102879A1 true WO2021102879A1 (zh) 2021-06-03

Family

ID=76129772

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/121846 WO2021102879A1 (zh) 2019-11-29 2019-11-29 一种连接重建方法、终端设备及存储介质

Country Status (8)

Country Link
US (1) US12058758B2 (zh)
EP (1) EP3930418B1 (zh)
JP (1) JP7514262B2 (zh)
KR (1) KR20220106038A (zh)
CN (2) CN114125969B (zh)
BR (1) BR112021026613A2 (zh)
MX (1) MX2021015924A (zh)
WO (1) WO2021102879A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117098248A (zh) * 2022-05-13 2023-11-21 中兴通讯股份有限公司 无线资源对齐方法、装置和系统
GB202411563D0 (en) * 2022-05-25 2024-09-18 Lenovo Beijing Ltd Method and apparatus of an enhanced mechanism for an rrc reestablishment procedure
CN117835459B (zh) * 2024-03-04 2024-08-06 荣耀终端有限公司 通信方法、终端设备、存储介质、芯片系统及产品

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102104982A (zh) * 2010-04-01 2011-06-22 电信科学技术研究院 一种多载波系统的连接重建方法和设备
CN110351896A (zh) * 2018-04-04 2019-10-18 华为技术有限公司 一种连接重建立方法及装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015139850A1 (en) * 2014-03-21 2015-09-24 Telefonaktiebolaget L M Ericsson (Publ) Mobility robustness optimization in a cellular network
US10694444B2 (en) * 2017-01-05 2020-06-23 Sharp Laboratories Of America, Inc. UE-based expedited handoff
WO2019154480A1 (en) * 2018-02-06 2019-08-15 Nokia Technologies Oy Further access attempts in conditional handover
WO2019175463A1 (en) * 2018-03-12 2019-09-19 Nokia Technologies Oy Determination for conditional handover failure
CN118200998A (zh) * 2018-04-03 2024-06-14 交互数字专利控股公司 用于无线系统中增强的移动性的方法
US11902843B2 (en) * 2018-11-28 2024-02-13 Telefonaktiebolaget Lm Ericsson (Publ) Method and wireless device for handling handover
CN112291819B (zh) * 2019-07-23 2023-12-08 夏普株式会社 无线链路失败恢复方法以及用户设备
KR20220047291A (ko) * 2019-08-14 2022-04-15 가부시키가이샤 엔티티 도코모 단말

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102104982A (zh) * 2010-04-01 2011-06-22 电信科学技术研究院 一种多载波系统的连接重建方法和设备
CN110351896A (zh) * 2018-04-04 2019-10-18 华为技术有限公司 一种连接重建立方法及装置

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
QUALCOMM INCORPORATED: "LTE Conditional HO design considerations", 3GPP DRAFT; R2-1906375_LTE CONDITIONAL HANDOVER DESIGN CONSIDERATIONS_V1, vol. RAN WG2, 17 May 2019 (2019-05-17), Reno, USA, pages 1 - 8, XP051710690 *
See also references of EP3930418A4 *
ZTE CORPORATION, SANECHIPS: "Discussion on fast HO failure recovery", 3GPP DRAFT; R2-1907094 DISCUSSION ON FAST HO FAILURE RECOVERY, vol. RAN WG2, 3 May 2019 (2019-05-03), Reno, USA, pages 1 - 4, XP051711391 *

Also Published As

Publication number Publication date
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

Similar Documents

Publication Publication Date Title
CN113766591B (zh) 一种接入控制方法、终端设备、基站及存储介质
WO2020034229A1 (zh) 一种信息传输方法及装置、通信设备
WO2019237763A1 (zh) 一种rlf的处理方法及装置、通信设备
US12058758B2 (en) Method of connection reestablishment, terminal device, and non-transitory computer-readable storage medium
US11611925B2 (en) Switching processing method, terminal device and network device
WO2021196100A1 (zh) 一种小区切换方法、电子设备及存储介质
WO2021142844A1 (zh) 一种小区接入方法、电子设备及存储介质
US20220279400A1 (en) Cell accessing method, electronic device, and storage medium
WO2020248283A1 (zh) 无线通信方法、装置和终端设备
WO2021068174A1 (zh) 一种小区连接方法、电子设备及存储介质
WO2021092940A1 (zh) 一种小区切换方法、电子设备及存储介质
WO2020061995A1 (zh) 一种信息传输方法及装置、终端、网络设备
WO2021174467A1 (zh) 一种数据传输方法、电子设备及存储介质
CN113994733B (zh) 一种控制测量的方法、电子设备及存储介质
EP3840472B1 (en) Timer-based processing method, terminal device and network device
WO2020191556A1 (zh) 一种切换处理方法、终端设备及网络设备
WO2020223972A1 (zh) 一种无线资源控制消息的处理方法、设备及存储介质
WO2020034125A1 (zh) 一种恢复rrc连接的方法及装置、终端
US20240015632A1 (en) Repeater mode determining method, electronic device, and storage medium
WO2022027638A1 (zh) 一种数据传输方法、电子设备及存储介质
WO2021208048A1 (zh) 一种数据传输方法、终端设备及存储介质
WO2021056465A1 (zh) 一种确定无线链路连接状态的方法、电子设备及存储介质
WO2020154927A1 (zh) 接入网络节点管理方法、终端设备、网络设备及存储介质

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19954182

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2019954182

Country of ref document: EP

Effective date: 20210920

ENP Entry into the national phase

Ref document number: 2021577514

Country of ref document: JP

Kind code of ref document: A

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112021026613

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112021026613

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20211228

NENP Non-entry into the national phase

Ref country code: DE