WO2023208048A1 - Procédé et appareil de transfert de cellule, terminal et dispositif côté réseau - Google Patents

Procédé et appareil de transfert de cellule, terminal et dispositif côté réseau Download PDF

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Publication number
WO2023208048A1
WO2023208048A1 PCT/CN2023/090891 CN2023090891W WO2023208048A1 WO 2023208048 A1 WO2023208048 A1 WO 2023208048A1 CN 2023090891 W CN2023090891 W CN 2023090891W WO 2023208048 A1 WO2023208048 A1 WO 2023208048A1
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WO
WIPO (PCT)
Prior art keywords
rrc signaling
terminal
target
cell group
cell
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PCT/CN2023/090891
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English (en)
Chinese (zh)
Inventor
宋二浩
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维沃移动通信有限公司
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Publication of WO2023208048A1 publication Critical patent/WO2023208048A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • This application belongs to the field of mobile communication technology, and specifically relates to a cell switching method, device, terminal and network side equipment.
  • the New Radio access network splits the base station, such as gNB, into a central unit (Centralized Unit, CU) and a distributed unit (Distributed Unit, DU), and connects them through the F1 interface.
  • a gNB contains only one CU, including one or more DUs, and one DU corresponds to one or more cells (Cell).
  • CU includes the Packet Data Convergence Protocol (PDCP) layer and the protocol stack below, such as the PDCP layer and the Radio Resource Control (Radio Resource Control, RRC) layer.
  • DU includes the protocol stack below the PDCP layer, such as the Radio Link Control (RLC) layer, the Media Access Control (Medium Access Control, MAC) layer, and the Physical (Physical, PHY) layer.
  • RLC Radio Link Control
  • MAC Media Access Control
  • PHY Physical
  • the terminal also known as User Equipment (UE)
  • UE User Equipment
  • Layer 1 or Layer 2 Intra-DU L1/L2
  • the MAC layer of the UE can be used after the switching is completed. No reset.
  • RRC Radio Resource Control
  • Embodiments of the present application provide a cell handover method, device, terminal and network side equipment, which can solve the problem that the configuration in the RRC signaling of the source cell may be applied when the UE has been handed over to the target cell.
  • a cell switching method is provided, which is applied to a terminal.
  • the method includes: when the terminal switches layer 1 or layer 2 of the first cell group, the terminal obtains the target RRC carrying the first indication information. signaling; its , the first indication information is used to instruct the terminal to apply the configuration associated with the first cell group in the target RRC signaling and the configuration associated with the first cell group in the subsequently received RRC signaling. associated configuration.
  • a cell switching device including: an execution module for executing layer 1 or layer 2 switching of the first cell group; a configuration module for obtaining target RRC signaling carrying first indication information; wherein , the first indication information is used to instruct to apply the configuration associated with the first cell group in the target RRC signaling, and to apply the configuration associated with the first cell group in the subsequently received RRC signaling. configuration.
  • a cell switching method is provided, which is applied to a network side device.
  • the method includes: the network side device initiates a layer 1 or layer 2 handover of the first cell group to the terminal; the network side device determines that the first cell group is switched. After the layer 1 or layer 2 handover of a cell group is completed, target RRC signaling is sent to the terminal; wherein the target RRC signaling carries first indication information, and the first indication information is used to instruct the terminal to apply The configuration associated with the first cell group in the target RRC signaling, and the configuration associated with the first cell group in the subsequently sent RRC signaling.
  • a cell switching device including: a first transmission module, configured to initiate a layer 1 or layer 2 switching of a first cell group to a terminal; a second transmission module, configured to determine whether the first cell After the group's layer 1 or layer 2 handover is completed, target RRC signaling is sent to the terminal; wherein the target RRC signaling carries first indication information, and the first indication information is used to indicate that the terminal is applied in the The configuration associated with the first cell group in the target RRC signaling, and the configuration associated with the first cell group in the subsequently sent RRC signaling.
  • a terminal in a fifth aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect.
  • a terminal including a processor and a communication interface, wherein the processor is used to perform layer 1 or layer 2 handover of the first cell group, and the communication interface is used to obtain a message carrying the first indication information.
  • Target RRC signaling is used to obtain a message carrying the first indication information.
  • a network side device in a seventh aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor.
  • a network side device including a processor and a communication interface, wherein the processor is used to determine that the layer 1 or layer 2 handover of the first cell group is completed, and the communication interface is used to The terminal initiates a layer 1 or layer 2 handover of the first cell group; and sends target RRC signaling to the terminal after determining that the layer 1 or layer 2 handover of the first cell group is completed.
  • a ninth aspect provides a cell switching system, including: a terminal and a network side device.
  • the terminal can be used to perform the steps of the cell switching method described in the first aspect.
  • the network side device can be used to perform the steps of the third aspect. The steps of the cell switching method described in this aspect.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method are implemented as described in the first aspect. The steps of the method described in the third aspect.
  • a chip in an eleventh aspect, includes a processor and a communication interface, the communication interface and the The processor is coupled, and the processor is used to run programs or instructions, implement the method described in the first aspect, or implement the method described in the third aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement as described in the first aspect
  • the cell switching method, or the steps of implementing the cell switching method of the third aspect is executed by at least one processor to implement as described in the first aspect.
  • target RRC signaling carrying first indication information is obtained, and the first indication information is used to instruct the terminal to apply The configuration associated with the first cell group in the target RRC signaling, and the configuration associated with the first cell group in the subsequently received RRC signaling, thereby enabling the terminal to avoid Errors caused by applying the configuration in the RRC signaling of the source cell.
  • Figure 1 is a schematic structural diagram of a wireless communication system applicable to the embodiment of the present application.
  • Figure 2 is a schematic flow chart of a cell switching method provided by an embodiment of the present application.
  • Figure 3 is a schematic structural diagram of a cell switching device provided by an embodiment of the present application.
  • Figure 4 is a schematic flow chart of another cell switching method provided by an embodiment of the present application.
  • Figure 5 is a schematic structural diagram of another cell switching device provided by an embodiment of the present application.
  • Figure 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a terminal that implements an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a network side device that implements an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • LTE Long-term evolution
  • LTE-Advanced, LTE-A Long-term evolution
  • LTE-Advanced, LTE-A Long-term evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • MID mobile Internet Device
  • AR augmented reality
  • VR virtual reality
  • robots wearable devices
  • WUE Vehicle User Equipment
  • PUE Pedestrian User Equipment
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • game consoles personal computers (personal computer, PC), teller machine or self-service machine and other terminal-side devices.
  • Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets) bracelets, smart anklets, etc.), smart wristbands, smart clothing, etc.
  • the network side device 12 may include an access network device or a core network device, where the access network device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a wireless access network unit.
  • Access network equipment may include a base station, a Wireless Local Area Network (WLAN) access point or a WiFi node, etc.
  • the base station may be called a Node B, an evolved Node B (eNB), or an access point.
  • Base Transceiver Station BTS
  • radio base station radio transceiver
  • BSS Basic Service Set
  • ESS Extended Service Set
  • home B node home evolved B Node
  • TRP Transmission Reception Point
  • the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application The description only takes the base station in the NR system as an example, and does not limit the specific type of base station.
  • Core network equipment may include but is not limited to at least one of the following: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Service Discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), etc.
  • MME mobility management entities
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • UPF User Plane Function
  • PCF Policy Control Function
  • PCF Policy
  • this embodiment of the present application provides a cell switching method.
  • the execution subject of this method is a terminal.
  • this method can be executed by software or hardware installed on the terminal.
  • the method includes the following steps.
  • the terminal obtains the target RRC signaling carrying the first indication information; wherein the first indication information is used to instruct the terminal to apply The configuration associated with the first cell group in the target RRC signaling, and the configuration associated with the first cell group in the subsequently received RRC signaling.
  • the terminal may receive a layer 1 or layer 2 (L1/L2) switching command of the first cell group, perform an L1/L2 switching process, and switch from the source cell to the target cell.
  • L1/L2 layer 1 or layer 2
  • two network nodes are provided for the UE, that is, the resources of the access network device.
  • One of the network nodes is called the master node (Master Node, MN), and the other one is called the master node (MN).
  • the network node is called a secondary node (Secondary Node, SN).
  • carrier aggregation technology Carrier Aggregation, CA
  • the master node controls the primary cell group (Master Cell Group, MCG), and the secondary node controls the secondary cell group (Secondary Cell Group, SCG).
  • Each cell group contains a special cell (Special Cell, SpCell) and a series of secondary cells (Secondary Cell, Scell).
  • the special cell In MCG, the special cell is called Primary Cell (PCell), and in SCG, the special cell is called Primary Secondary Cell (PSCell).
  • PCell Primary Cell
  • PSCell Primary Secondary Cell
  • SpCell uses the primary carrier, while other secondary cells use secondary carriers. Resource scheduling within a cell group is performed by SpCell.
  • the first cell group may be MCG or SCG.
  • the L1/L2 handover process for MCG is used to switch the primary cell
  • the L1/L2 handover process for SCG is used to switch the primary and secondary cells.
  • the terminal may retrieve the received RRC signaling from the MAC buffer, and the RRC signaling may include performing the L1 switching of the first cell group at the terminal.
  • the RRC signaling received before /L2 handover or during the handover is the RRC signaling of the source cell
  • the RRC signaling received after the handover is completed is the RRC signaling of the target cell.
  • the configuration associated with the first cell group contained therein is the configuration corresponding to the source cell.
  • the method before acquiring the target RRC signaling, the method further includes:
  • the terminal After starting to perform layer 1 or layer 2 handover of the first cell group, the terminal discards the configuration associated with the first cell group in the obtained RRC signaling, and applies the configuration except the first cell group. configuration associated with other cell groups. For example, if the first cell group is MCG, the terminal discards the configuration associated with MCG in the obtained RRC signaling. If the first cell group is SCG, the terminal discards the configuration in the obtained RRC signaling. Configuration associated with SCG. For the sake of simplicity, in the following embodiments, the configuration associated with the first cell group may be called configuration B, and the configurations associated with other cell groups may be called configuration A.
  • the terminal obtains the target RRC signaling, and applies the configuration B in the target RRC signaling and the configuration B in the subsequently received RRC signaling based on the first indication information carried in the target RRC signaling. This is equivalent to that after acquiring the target RRC signaling, the terminal applies all configuration parameters in the target RRC signaling and subsequently received RRC signaling.
  • the network side device will send the target RRC signaling carrying the first indication information to the terminal.
  • the target RRC signaling sent by the network side device may specifically be the first RRC signaling sent to the terminal after it is determined that the L1/L2 handover of the first cell group is completed, carrying the first indication information.
  • the terminal can identify the cell group associated with the corresponding configuration according to the cell identifier (Identifier, ID) or cell group identifier (Cell Group ID) carried in the RRC signaling. If the carried cell identifier belongs to the first cell group, or the carried cell group identifier is the identifier of the first cell group, the configuration is determined to be configuration B; otherwise, the configuration is determined to be configuration A.
  • ID the cell identifier
  • Cell Group ID cell group identifier
  • the terminal can also obtain a Non-Access Stratum (NAS) message from the MAC buffer.
  • NAS Non-Access Stratum
  • the terminal The method further includes: when the first cell group is MCG, the terminal discards the obtained NAS message; and when the first cell group is SCG, the terminal applies the NAS message .
  • the embodiment of the present application obtains the target RRC signaling carrying the first indication information, and the first indication information is used to Instruct the terminal to apply the configuration associated with the first cell group in the target RRC signaling and the configuration associated with the first cell group in the subsequently received RRC signaling, so that the terminal is switched to After entering the target cell, avoid errors caused by applying the configuration in the RRC signaling of the source cell.
  • the method also includes:
  • the terminal sends an RRC reconfiguration completion message to the network side device.
  • the terminal After completing the L1/L2 handover of the first cell group, if the terminal obtains configuration B in the RRC message, it discards configuration B in the RRC message and applies configuration A in the RRC message. Then, an RRC reconfiguration completion message is returned to the network side device, which is used to notify the network side device that part of the configuration has not been applied and/or characteristics of the unapplied configuration and/or reason information for not being applied.
  • the RRC reconfiguration completion message carries indication information, and the indication information is used to indicate At least one of the following:
  • the terminal discards the configuration associated with the first cell group in the acquired RRC signaling, and applies other cell groups except the first cell group.
  • an RRC reconfiguration completion message is returned to the network side device, which is used to notify the network side device that part of the configuration has not been applied, so that the network side device can send target RRC signaling, so that the terminal can Apply the configuration in the RRC signaling of the target cell in a timely manner.
  • the first indication information is configured based on at least one of the following:
  • the terminal that is, the first indication information may be configured separately for each terminal (per UE);
  • the target signaling radio bearer (Signalling Radio Bearer, SRB), that is, the first indication information can be configured separately for each signaling radio bearer (per SRB);
  • the target logical channel that is, the first indication information may be configured separately for each logical channel (per LCH).
  • the first indication information when the first indication information is configured per UE, the first indication information is used to instruct the corresponding terminal to stop discarding the target RRC signaling and configuration B in subsequent RRC signaling, That is, all configuration parameters in the target RRC signaling and subsequent RRC signaling, that is, configuration A and configuration B, are applied until L1/L2 handover is performed again.
  • the terminal stops discarding the target RRC signaling and subsequent RRC after acquiring the target RRC signaling carrying the first indication information corresponding to the terminal.
  • the configuration of the first cell group in the signaling that is, the configuration associated with all cell groups in the target RRC signaling, and the configuration associated with all cell groups in the subsequently received RRC signaling, until L1/L2 is executed again switch.
  • the first indication information is per SRB or per LCH configuration
  • the first indication information corresponds to the target SRB or target LCH
  • the first indication information is used to indicate
  • the terminal stops discarding configuration B in the target RRC signaling and subsequent RRC signaling received through the target SRB or target LCH, that is, applying the target RRC signaling and subsequent RRC signaling received through the target SRB or target LCH. all configuration parameters in the command until L1/L2 switching is performed again.
  • the terminal After acquiring the target RRC signaling carrying the first indication information, the terminal applies the target RRC signaling The configuration associated with all cell groups in the RRC signaling received subsequently through the target signaling radio bearer or the target logical channel, until the L1/L2 handover is performed again.
  • the network side device when the first indication information is based on the terminal, In the case of row configuration, the network side device carries the first indication information in the first RRC signaling sent to the terminal after determining that the L1/L2 handover of the first cell group is completed.
  • the network side device determines the L1/L2 of the first cell group. After the handover is completed, the first RRC signaling sent to the terminal through the target signaling radio bearer or the target logical channel carries the first indication information.
  • the first indication information can be configured based on the terminal, signaling radio bearer or logical channel, so that the terminal can achieve flexible configuration after switching to the target cell.
  • the execution subject may be a cell switching device.
  • the cell switching method performed by the cell switching device is used as an example to illustrate the cell switching device provided by the embodiment of the present application.
  • the cell switching device includes: an execution module 301 and a configuration module 302.
  • the execution module 301 is used to perform layer 1 or layer 2 handover of the first cell group; the configuration module 302 is used to obtain target RRC signaling carrying first indication information; wherein the first indication information is used to indicate The configuration associated with the first cell group in the target RRC signaling is applied, and the configuration associated with the first cell group in the subsequently received RRC signaling is applied.
  • the configuration module 302 is also configured to discard the configuration associated with the first cell group in the obtained RRC signaling after starting to perform layer 1 or layer 2 handover of the first cell group, And apply configurations associated with other cell groups except the first cell group.
  • the first cell group is MCG or SCG.
  • the configuration module 302 is also used to:
  • the obtained NAS message is applied.
  • the embodiment of the present application obtains the target RRC signaling carrying the first indication information, and the first indication information is used to indicate the application The configuration associated with the first cell group in the target RRC signaling, and the configuration associated with the first cell group in the subsequently received RRC signaling, so that the cell switching device can , to avoid errors caused by applying the configuration in the RRC signaling of the source cell.
  • the configuration module 302 is also configured to send an RRC reconfiguration completion message to the network side device.
  • the RRC reconfiguration complete message carries second indication information, and the second indication information is used to indicate at least one of the following:
  • the cell switching device discards the configuration associated with the first cell group in the acquired RRC signaling, and applies other configurations except the first cell group.
  • an RRC reconfiguration completion message is returned to the network side device, which is used to notify the network side device that part of the configuration has not been applied, so that the network side device sends target RRC signaling, so that the cell switching device switches to the target After entering the cell, the configuration in the RRC signaling of the target cell can be applied in a timely manner.
  • the first indication information is configured based on at least one of the following:
  • the cell switching device The cell switching device
  • the configuration module 302 is further configured to: The configuration associated with all cell groups in the signaling, and the configuration associated with all cell groups in the subsequently received RRC signaling.
  • the configuration module 302 after acquiring the target RRC signaling carrying the first indication information, the configuration module 302 also uses The configuration applied to all cell group associations in the target RRC signaling, and the configuration associated with all cell groups in subsequent RRC signaling received through the target signaling radio bearer or the target logical channel.
  • the first indication information can be configured based on the cell switching device, the signaling radio bearer or the logical channel, so that the cell switching device can achieve flexible configuration after switching to the target cell. .
  • the cell switching device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • NAS Network Attached Storage
  • the cell switching device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 2 and achieve the same technical effect. To avoid duplication, details will not be described here.
  • this embodiment of the present application provides a cell switching method.
  • the method is executed by a network-side device.
  • the method can be executed by software or hardware installed on the network-side device.
  • the method includes the following steps.
  • the network side device initiates a Layer 1 or Layer 2 handover of the first cell group to the terminal;
  • the network side device sends target RRC signaling to the terminal after determining that the layer 1 or layer 2 handover of the first cell group is completed; wherein the target RRC signaling carries first indication information, so The first indication information is used to instruct the terminal to apply the configuration associated with the first cell group in the target RRC signaling, and subsequent Configuration associated with the first cell group in the sent RRC signaling.
  • the first cell group is MCG or SCG.
  • Steps S410-S420 can implement the method embodiment shown in Figure 2 and obtain the same technical effect, and the repeated parts will not be described again.
  • the embodiments of the present application initiate layer 1 or layer 2 handover of the first cell group to the terminal; and then after it is determined that the layer 1 or layer 2 handover of the first cell group is completed, the The terminal sends target RRC signaling; wherein the target RRC signaling carries first indication information, and the first indication information is used to instruct the terminal to use the target RRC signaling with the first cell group.
  • the associated configuration, as well as the configuration associated with the first cell group in the subsequently sent RRC signaling thereby enabling the terminal to avoid errors caused by applying the configuration in the RRC signaling of the source cell after switching to the target cell.
  • the method further includes:
  • the network side device receives an RRC reconfiguration complete message from the terminal.
  • the RRC reconfiguration complete message carries second indication information, and the second indication information is used to indicate at least one of the following:
  • the embodiments of the present application can implement the technical solution implemented by the above terminal side method and obtain the same technical effect, and the redundant parts will not be repeated here.
  • the embodiments of the present application are used to notify the network side device that part of the configuration has not been applied by receiving the RRC reconfiguration completion message from the terminal, so that the network side device sends the target RRC signaling, thereby enabling After the terminal is handed over to the target cell, the configuration in the RRC signaling of the target cell can be applied in a timely manner.
  • the first indication information is configured based on at least one of the following:
  • the target RRC signaling is to send the signal to the terminal after it is determined that the layer 1 or layer 2 handover execution of the first cell group is completed.
  • the target RRC signaling is determined after determining layer 1 or layer 2 of the first cell group.
  • the embodiments of the present application can implement the technical solution implemented by the above terminal side method and obtain the same technical effect. Repeat Some of them will not be repeated here.
  • the first indication information can be configured based on the terminal, signaling radio bearer or logical channel, so that the terminal can achieve flexible configuration after switching to the target cell.
  • the execution subject may be a cell switching device.
  • the cell switching method performed by the cell switching device is used as an example to illustrate the cell switching device provided by the embodiment of the present application.
  • the cell switching device includes: a first transmission module 501 and a second transmission module 502.
  • the first transmission module 501 is used to initiate a layer 1 or layer 2 handover of the first cell group to the terminal; the second transmission module 502 is used to determine that the layer 1 or layer 2 handover of the first cell group is completed. Then, target RRC signaling is sent to the terminal; wherein, the target RRC signaling carries first indication information, and the first indication information is used to instruct the terminal to use the target RRC signaling with the third indication information.
  • the first cell group is MCG or SCG.
  • the embodiments of the present application initiate layer 1 or layer 2 handover of the first cell group to the terminal; and then after it is determined that the layer 1 or layer 2 handover of the first cell group is completed, the The terminal sends target RRC signaling; wherein the target RRC signaling carries first indication information, and the first indication information is used to instruct the terminal to use the target RRC signaling with the first cell group.
  • the associated configuration, as well as the configuration associated with the first cell group in the subsequently sent RRC signaling thereby enabling the terminal to avoid errors caused by applying the configuration in the RRC signaling of the source cell after switching to the target cell.
  • the second transmission module is also configured to receive an RRC reconfiguration complete message from the terminal.
  • the RRC reconfiguration complete message carries second indication information, and the second indication information is used to indicate at least one of the following:
  • the embodiments of the present application receive an RRC reconfiguration completion message from the terminal to notify that part of the configuration has not been applied, so that the cell switching device sends target RRC signaling, thereby allowing the terminal to switch After arriving at the target cell, the configuration in the RRC signaling of the target cell can be applied in a timely manner.
  • the first indication information is configured based on at least one of the following:
  • the target RRC signaling It is the first RRC signaling sent to the terminal after it is determined that the layer 1 or layer 2 handover of the first cell group is completed.
  • the target RRC signaling is determined after determining layer 1 or layer 2 of the first cell group.
  • the first indication information can be configured based on the terminal, signaling radio bearer or logical channel, so that the terminal can achieve flexible configuration after switching to the target cell.
  • the cell switching device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • NAS Network Attached Storage
  • the cell switching device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 4 and achieve the same technical effect. To avoid duplication, details will not be described here.
  • this embodiment of the present application also provides a communication device 600, which includes a processor 601 and a memory 602.
  • the memory 602 stores programs or instructions that can be run on the processor 601, such as , when the communication device 600 is a terminal, when the program or instruction is executed by the processor 601, each step of the above cell switching method embodiment is implemented, and the same technical effect can be achieved.
  • the communication device 600 is a network-side device, when the program or instruction is executed by the processor 601, each step of the above cell switching method embodiment is implemented, and the same technical effect can be achieved. To avoid duplication, the details are not repeated here.
  • Embodiments of the present application also provide a terminal, including a processor and a communication interface.
  • the processor is configured to perform layer 1 or layer 2 handover of the first cell group
  • the communication interface is configured to obtain target RRC signaling carrying the first indication information.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 7 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, etc. At least some parts.
  • the terminal 700 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 710 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 7 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.
  • the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042.
  • the GPU 7041 is used for recording data generated by an image capture device (such as a camera) in the video capture mode or the image capture mode.
  • the image data obtained from still pictures or videos is processed.
  • the display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. 7061.
  • the user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072 .
  • Touch panel 7071 also called touch screen.
  • the touch panel 7071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 7072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 701 after receiving downlink data from the network side device, can transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network side device.
  • the radio frequency unit 701 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 709 may be used to store software programs or instructions as well as various data.
  • the memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 709 may include volatile memory or non-volatile memory, or memory 709 may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM synchronous link dynamic random access memory
  • SLDRAM direct memory bus
  • the processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above-mentioned modem processor may not be integrated into the processor 710.
  • the radio frequency unit 701 is used to obtain the target RRC signaling carrying the first indication information
  • Processor 710 configured to perform layer 1 or layer 2 handover of the first cell group; wherein the first indication information is used to indicate application of the configuration associated with the first cell group in the target RRC signaling, and the configuration associated with the first cell group in the subsequently received RRC signaling.
  • the processor 710 is further configured to discard the configuration associated with the first cell group in the acquired RRC signaling after starting to perform layer 1 or layer 2 handover of the first cell group, And apply configurations associated with other cell groups except the first cell group.
  • the first cell group is MCG or SCG.
  • the processor 710 Before acquiring the target RRC signaling, the processor 710 is also used to:
  • the obtained NAS message is applied.
  • the embodiment of the present application can enable the terminal to avoid errors caused by applying the configuration in the RRC signaling of the source cell after switching to the target cell.
  • the radio frequency unit 701 is also configured to send an RRC reconfiguration completion message to the network side device.
  • the RRC reconfiguration complete message carries second indication information, and the second indication information is used to indicate at least one of the following:
  • the embodiment of the present application enables the terminal to apply the configuration in the RRC signaling of the target cell in a timely manner after switching to the target cell.
  • the first indication information is configured based on at least one of the following:
  • the cell switching device The cell switching device
  • the processor 710 is further configured to: The configuration associated with all cell groups in the RRC signaling received subsequently, and the configuration associated with all cell groups in the subsequently received RRC signaling.
  • the processor 710 after acquiring the target RRC signaling carrying the first indication information, the processor 710 also uses The configuration applied to all cell group associations in the target RRC signaling, and the configuration associated with all cell groups in subsequent RRC signaling received through the target signaling radio bearer or the target logical channel.
  • the embodiment of the present application enables the terminal to implement flexible configuration after switching to the target cell.
  • An embodiment of the present application also provides a network side device, including a processor and a communication interface.
  • the processor is used to determine that the layer 1 or layer 2 handover of the first cell group is completed, and the communication interface is used to initiate the first cell group to the terminal.
  • the first indication information is used to instruct the terminal to apply the configuration associated with the first cell group in the target RRC signaling, and the configuration associated with the first cell group in the subsequently sent RRC signaling.
  • This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network side device 800 includes: an antenna 81 , a radio frequency device 82 , a baseband device 83 , a processor 84 and a memory 85 .
  • the antenna 81 is connected to the radio frequency device 82 .
  • the radio frequency device 82 receives information through the antenna 81 and sends the received information to the baseband device 83 for processing.
  • the baseband device 83 processes the information to be sent and sends it to the radio frequency device 82.
  • the radio frequency device 82 processes the received information and then sends it out through the antenna 81.
  • the method performed by the network side device in the above embodiment can be implemented in the baseband device 83, which includes a baseband processor.
  • the baseband device 83 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.
  • the network side device may also include a network interface 86, which is, for example, a common public radio interface (CPRI).
  • a network interface 86 which is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the network side device 800 in the embodiment of the present application also includes: instructions or programs stored in the memory 85 and executable on the processor 84.
  • the processor 84 calls the instructions or programs in the memory 85 to execute the various operations shown in Figure 5. The method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.
  • Embodiments of the present application also provide a readable storage medium, which stores programs or instructions.
  • program or instructions When the program or instructions are executed by a processor, each process of the above cell switching method embodiment is implemented, and the same can be achieved. The technical effects will not be repeated here to avoid repetition.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the above cell switching method embodiment. Each process can achieve the same technical effect. To avoid duplication, it will not be described again here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above embodiment of the cell switching method.
  • Each process can achieve the same technical effect. To avoid repetition, we will not go into details here.
  • Embodiments of the present application also provide a cell switching system, including: a terminal and a network side device.
  • the terminal can be used to perform the steps of the cell switching method as described above.
  • the network side device can be used to perform the cell switching method as described above. Steps to switch methods.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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

Abstract

La présente demande se rapporte au domaine des communications mobiles et divulgue un procédé et un appareil de transfert de cellule, un terminal et un dispositif côté réseau. Le procédé de transfert de cellule des modes de réalisation de la présente demande comprend les étapes suivantes : lorsqu'un transfert de couche 1 ou de couche 2 d'un premier groupe de cellules se produit dans un terminal, le terminal obtient une signalisation de commande RRC cible comportant des premières informations d'indication, les premières informations d'indication étant utilisées pour ordonner au terminal d'appliquer une configuration, associée au premier groupe de cellules, dans la signalisation de commande RRC cible, et une configuration, associée au premier groupe de cellules, dans la signalisation de commande RRC reçue ultérieurement.
PCT/CN2023/090891 2022-04-29 2023-04-26 Procédé et appareil de transfert de cellule, terminal et dispositif côté réseau WO2023208048A1 (fr)

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CN202210468975.1A CN117014976A (zh) 2022-04-29 2022-04-29 小区切换方法、装置、终端及网络侧设备

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