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WO2025199772A1 - Procédé de communication sans fil, dispositif terminal et dispositif de réseau - Google Patents

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

Info

Publication number
WO2025199772A1
WO2025199772A1 PCT/CN2024/083933 CN2024083933W WO2025199772A1 WO 2025199772 A1 WO2025199772 A1 WO 2025199772A1 CN 2024083933 W CN2024083933 W CN 2024083933W WO 2025199772 A1 WO2025199772 A1 WO 2025199772A1
Authority
WO
WIPO (PCT)
Prior art keywords
configuration
terminal device
ltm
mcg
scgs
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/CN2024/083933
Other languages
English (en)
Chinese (zh)
Inventor
尤心
林雪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
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 Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2024/083933 priority Critical patent/WO2025199772A1/fr
Publication of WO2025199772A1 publication Critical patent/WO2025199772A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Definitions

  • the present application relates to the field of communication technology, and more specifically, to a method, terminal device, and network device for wireless communication.
  • LTM Layer 1/Layer 2 triggered mobility
  • the present application provides a method, terminal device, and network device for wireless communication, which are conducive to ensuring that the processing method of LTM configuration is applicable to various scenarios (for example, existing LTM scenarios and extended LTM scenarios), with a wider range of adaptability.
  • various scenarios for example, existing LTM scenarios and extended LTM scenarios
  • the following introduces various aspects involved in this application.
  • a method for wireless communication including: a terminal device performs a first operation for a first configuration, the first configuration is used to configure LTM, and the first operation includes one or more of the following: releasing part or all of the configurations in the first configuration; retaining part or all of the configurations in the first configuration; suspending the use of part or all of the configurations in the first configuration.
  • a method for wireless communication including: a network device sends indication information to a terminal device, the indication information is used to indicate a first operation for a first configuration, the first configuration is used to configure LTM, and the first operation includes one or more of the following: releasing part or all of the configurations in the first configuration; retaining part or all of the configurations in the first configuration; suspending the use of part or all of the configurations in the first configuration.
  • a terminal device including: an execution module for performing a first operation on a first configuration, wherein the first configuration is used to configure LTM, and the first operation includes one or more of the following: releasing part or all of the configurations in the first configuration; retaining part or all of the configurations in the first configuration; suspending the use of part or all of the configurations in the first configuration.
  • a network device including: a sending module for sending indication information to a terminal device, wherein the indication information is used to indicate a first operation for a first configuration, wherein the first configuration is used to configure LTM, and the first operation includes one or more of the following: releasing part or all of the configurations in the first configuration; retaining part or all of the configurations in the first configuration; suspending the use of part or all of the configurations in the first configuration.
  • a network device comprising a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the network device executes part or all of the steps in the method of the second aspect.
  • an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and/or network device.
  • the system may also include other devices that interact with the terminal device or network device in the solution provided in the embodiment of the present application.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program enables a computer to execute part or all of the steps in the methods of the above aspects.
  • embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a computer to perform some or all of the steps of the methods described in each of the above aspects.
  • the computer program product may be a software installation package.
  • an embodiment of the present application provides a chip, which includes a memory and a processor.
  • the processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.
  • a terminal device may perform one or more of the following operations on the first configuration used to configure LTM: releasing some or all of the configurations in the first configuration, retaining some or all of the configurations in the first configuration, or suspending some or all of the configurations in the first configuration.
  • These operations are beneficial for improving the handover success rate, reducing signaling overhead, or shortening handover latency.
  • the solution of the embodiment of the present application is compatible with existing LTM scenarios and extended LTM scenarios, and has a wider range of adaptability.
  • FIG2 is a schematic diagram of the control plane networking method in the dual-connection scenario of EN-DC.
  • FIG3 is another exemplary diagram of a system architecture of a wireless communication system to which embodiments of the present application may be applied.
  • FIG4 is a schematic diagram of the LTM process.
  • FIG5 is a flowchart of a method for wireless communication provided in an embodiment of the present application.
  • FIG6 is a flowchart of a method for wireless communication provided in another embodiment of the present application.
  • FIG7 is a schematic diagram of the structure of the terminal device provided in an embodiment of the present application.
  • FIG8 is a schematic diagram of the structure of a network device provided in an embodiment of the present application.
  • FIG9 is a schematic structural diagram of a communication device provided in an embodiment of the present application.
  • FIG1 is a diagram illustrating an exemplary system architecture of a wireless communication system 100 to which embodiments of the present application may be applied.
  • the wireless communication system 100 may include a network device 110 and a terminal device 120.
  • the network device 110 may be a device that communicates with the terminal device 120.
  • the network device 110 may provide communication coverage for a specific geographic area and may communicate with the terminal device 120 within the coverage area.
  • FIG1 exemplarily shows a network device and two terminal devices.
  • the wireless communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in this embodiment of the present application.
  • the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, such as the fifth generation (5G) system or NR, the long term evolution (LTE) system, the LTE frequency division duplex (FDD) system, and the LTE time division duplex (TDD) system.
  • the technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system and satellite communication systems.
  • Base stations can be fixed or mobile.
  • a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station.
  • a helicopter or drone can be configured to act as a mobile base station.
  • Station communication equipment can be fixed or mobile.
  • the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU.
  • the gNB may also include an AAU.
  • the network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites.
  • the embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.
  • the methods provided in the embodiments of the present application can be used in various dual connection (DC) architectures.
  • DC dual connection between a fourth-generation (4G) communication system and a fifth-generation (5G) communication system
  • dual connection between a 5G communication system and a 4G communication system dual connection between a 5G communication system and a 5G communication system, or a 5G communication system and a future communication system, etc.
  • the fifth-generation communication system may also be referred to as an NR system.
  • the methods provided in the embodiments of the present application are not limited to application in the DC architecture, and can also be applied to other system architectures, such as a single connection architecture.
  • a terminal device is simultaneously connected to two cell sets.
  • One of these cell sets is called a master cell group (MCG), which includes at least one primary cell (PCell) and, optionally, at least one secondary cell (SCell).
  • MCG master cell group
  • SCell secondary cell
  • SCG secondary cell group
  • PSCell primary and secondary cell
  • SCell secondary cell group
  • the dual-connection architecture of NR-DC is shown in Figure 2.
  • the terminal device is connected to the MN and SN at the same time.
  • the MN and SN are connected through the Xn interface, and the MN is connected to the core network device through the NG interface.
  • the SN is also connected to the core network device through the NG interface.
  • the following describes a communication system applicable to the embodiment of the present application by taking the communication system 30 shown in FIG3 as an example.
  • FIG 3 is a schematic diagram of the architecture of a communication system 30 provided in an embodiment of the present application.
  • communication system 30 may include network device 301, network device 302, network device 305, terminal device 303, and terminal device 304.
  • Figure 3 is merely a schematic diagram and does not limit the applicable scenarios of the technical solutions provided in this application.
  • the network device in Figure 3, namely network device 301, network device 302 or network device 305, may be, for example, the network device 110 shown in Figure 1.
  • the terminal device in Figure 3, namely terminal device 303 or terminal device 304, may be, for example, the terminal device 120 shown in Figure 1.
  • the LTM process may include an LTM preparation phase, an LTM execution phase, and an LTM completion phase.
  • the LTM may include steps S410 to S430.
  • the terminal device reports a measurement result to the network device.
  • the measurement result may be a layer 3 measurement result.
  • the network device may then determine to initiate an LTM process based on the measurement result reported by the terminal device and trigger candidate cell preparation.
  • the network device sends a radio resource control (RRC) message including an LTM configuration (or LTM candidate configuration) to the terminal device.
  • RRC radio resource control
  • the network device may send an RRC reconfiguration message (RRCReconfiguration message) to the terminal device to indicate the LTM configuration.
  • the LTM configuration sent by the network device to the terminal device may include LTM configurations corresponding to one or more candidate cells.
  • the terminal device may also store the LTM configuration indicated by the network device.
  • the LTM may include step S450 and step S460.
  • step S450 the terminal device performs layer 1 measurement on each candidate cell and reports the layer 1 measurement result to the network device.
  • the network device may determine the target cell based on the layer 1 measurement result.
  • the terminal device may further perform step S470 during the LTM execution phase.
  • step S470 the terminal device initiates a random access procedure to the target cell.
  • the LTM may include step S480 .
  • RRC release may refer to the disconnection of the RRC connection between the terminal device and the network device.
  • RRC release may refer to the terminal device being in an RRC idle state or an RRC inactive state.
  • the purpose of the terminal device retaining the MCG LTM configuration is to enable rapid LTM recovery.
  • the PCell/PSCell change/addition can be a PCell/PSCell change/addition based on layer 3, or a conditional PCell/PSCell change/addition.
  • the current LTM (see MCG LTM and/or SCG LTM in Table 1) only supports intra-CU LTM scenarios. In other words, the current LTM configuration processing method is only for intra-CU LTM.
  • the embodiments of the present application provide a method, terminal device and network device for wireless communication, which are conducive to ensuring that the processing method of LTM configuration is applicable to various scenarios. For example, it can be applicable to existing LTM scenarios and extended LTM scenarios (such as inter-CU LTM, conditional LTM, etc.), with a wider range of adaptability.
  • FIG5 is a flow chart of a method for wireless communication according to an embodiment of the present application.
  • the method shown in FIG5 can be executed by a terminal device, such as the terminal device 120 shown in FIG1.
  • the method shown in FIG5 can include step S510, which is described below.
  • step S510 the terminal device performs a first operation for a first configuration.
  • the first configuration may be used to configure the LTM.
  • the first configuration may include the LTM configuration.
  • the first configuration may also be understood as the LTM configuration.
  • the first configuration may include an MCG-associated configuration and/or an SCG-associated configuration.
  • the first configuration may include one or more MCG-associated configurations.
  • the first configuration may include one or more SCG-associated configurations.
  • the first configuration may include one or more MCG-associated configurations and one or more SCG-associated configurations.
  • the MCG-associated configuration may include an MCG LTM configuration
  • the SCG-associated configuration may include an SCG LTM configuration
  • the first configuration may include an MCG LTM configuration and/or an SCG LTM configuration.
  • the embodiments of the present application do not limit the configuration content included in the first configuration.
  • the first configuration can be used to indicate one or more of the following information: relevant information about candidate cells, relevant information about measurements that the terminal device needs to perform, relevant information about the terminal device performing early synchronization, and relevant information about the terminal device performing handover.
  • the first configuration may include one or more of the following: configuration of one or more candidate cells (or, one or more candidate cell configurations), measurement configuration associated with one or more candidate cells, early synchronization configuration associated with one or more candidate cells, measurement reporting condition configuration associated with one or more candidate cells, switching condition configuration associated with one or more candidate cells, etc.
  • the first configuration may include one or more of the following: configurations of one or more candidate cell groups (or, one or more candidate cell group configurations), measurement configurations associated with one or more candidate cell groups, early synchronization configurations associated with one or more candidate cell groups, measurement reporting condition configurations associated with one or more candidate cell groups, and handover condition configurations associated with one or more candidate cell groups.
  • Each of the one or more candidate cell groups may include one or more candidate cells.
  • the first configuration may include one or more CU-associated configurations.
  • the first configuration may include a CU-associated configuration, in which case the CU-associated configuration is equivalent to the first configuration.
  • the first configuration may include multiple CU-associated configurations, in which case the CU-associated configuration refers to a partial configuration in the first configuration.
  • the first configuration may include a CU-associated measurement configuration and/or multiple CU-associated candidate cell configurations, or the first configuration may include multiple CU-associated measurement configurations and multiple CU-associated candidate cell configurations.
  • the configuration of one or more candidate cell groups included in the first configuration may belong to a configuration associated with the same CU. In some embodiments, the configuration of one or more candidate cell groups included in the first configuration may belong to a configuration associated with different CUs. Taking the configuration in which the first configuration includes 8 candidate cell groups (candidate cell group 1 to candidate cell group 8) as an example, the configuration of these 8 candidate cell groups may belong to a configuration associated with the same CU; or the configuration of candidate cell group 1 to candidate cell group 5 may belong to a configuration associated with the same CU, and candidate cell group 6 to candidate cell group 8 may belong to a configuration associated with another CU; or, the 8 candidate cell groups may respectively belong to configurations associated with different CUs, etc.
  • different CUs/candidate cell groups may be associated with different first configurations.
  • CU1/candidate cell group 1 is associated with candidate cells 1 to 5, and CU1/candidate cell group 1 may be associated with one first configuration
  • CU2/candidate cell group 2 is associated with candidate cells 2 to 6
  • CU2/candidate cell group 2 may be associated with another first configuration.
  • LTM including measurement, reporting, switching, etc.
  • LTM may be performed based on the first configuration associated with the target CU/candidate cell group (or, the new CU/candidate cell group).
  • the relevant information of the candidate cell may include, for example, identification information of the candidate cell, physical layer configuration parameters of the candidate cell (such as frequency, code rate, power, etc.), etc.
  • the relevant information of the measurements that the terminal device needs to perform may include, for example, which frequency points the terminal device needs to measure, the reference signal used by the terminal device when measuring, the wireless resources used by the terminal device for measurement reporting (such as time-frequency resources, etc.), and the conditions for terminal device measurement reporting (such as periodic reporting, event-triggered reporting, etc.).
  • the relevant information of the measurements that the terminal device needs to perform can be indicated by one or more of the following: measurement configurations associated with one or more candidate cells, measurement configurations associated with one or more candidate cell groups, measurement reporting condition configurations associated with one or more candidate cells, and measurement reporting condition configurations associated with one or more candidate cell groups.
  • the measurement configuration associated with the candidate cell may include a reference signal configuration and/or a measurement reporting configuration.
  • the reference signal configuration may be used to indicate the reference signal used by the terminal device for measurement
  • the measurement reporting configuration may be used to indicate the radio resources used by the terminal device for measurement reporting.
  • the relevant information of the terminal device performing early synchronization may include, for example, whether the terminal device needs to perform early synchronization, information about the reference signal required for the terminal device to perform early synchronization, etc. It should be understood that the terminal device performing early synchronization means that the terminal device can perform uplink/downlink synchronization with the candidate cell in advance before receiving the LTM cell switching command. For details, please refer to the process of Figure 4.
  • the relevant information for the terminal device to perform early synchronization can be indicated by, for example, early synchronization configurations associated with one or more candidate cells or early synchronization configurations associated with one or more candidate cell groups.
  • the relevant information for the terminal device to perform handover may include, for example, the handover conditions (or handover triggering conditions) associated with the candidate cell, the specific parameter settings of the handover (for example, the target cell configuration validity information, handover type, handover delay, etc.), etc.
  • the relevant information for the terminal device to perform handover can be indicated by, for example, a handover condition configuration associated with one or more candidate cells or a handover condition configuration associated with one or more candidate cell groups.
  • releasing part or all of the configurations in the first configuration may include one or more of the following: releasing the MCG-associated configuration (also known as releasing all MCG-associated configurations), releasing part of the configuration in the MCG-associated configuration, releasing the SCG-associated configuration (also known as releasing all SCG-associated configurations), and releasing part of the configuration in the SCG-associated configuration.
  • the embodiments of the present application do not limit the release of part of the configuration associated with the MCG.
  • the release of part of the configuration associated with the MCG may include one or more of the following: releasing part of the configuration or all of the configuration associated with the source MCG, releasing part of the configuration or all of the configuration associated with the target MCG, releasing part of the configuration or all of the configuration associated with the service MCG, etc.
  • the embodiments of the present application do not limit the release of part of the configuration in the SCG-associated configuration.
  • the release of part of the configuration in the SCG-associated configuration may include one or more of the following: releasing part of the configuration or all of the configuration in the source SCG-associated configuration, releasing part of the configuration or all of the configuration in the target SCG-associated configuration, and releasing part of the configuration or all of the configuration in the service SCG-associated configuration.
  • retaining part or all of the configuration in the first configuration may include one or more of the following: retaining the MCG-associated configuration (also known as retaining all the MCG-associated configurations), retaining part of the configuration in the MCG-associated configuration, retaining the SCG-associated configuration (also known as retaining all the SCG-associated configurations), and retaining part of the configuration in the SCG-associated configuration.
  • the retention of the first configuration mentioned later (such as retaining the configuration associated with one or more MCGs, retaining the configuration associated with one or more SCGs, retaining the configuration associated with one or more SCGs associated with the target MCG, etc.) all have the same meaning and will not be repeated later for the sake of brevity.
  • the first type of handover may include one or more of the following: intra-CU LTM, inter-CU LTM, intra-DU LTM, inter-DU LTM, and conditional LTM.
  • the first event being related to LTM may mean that the first event is related to one or more of the following: intra-CU LTM, inter-CU LTM, intra-DU LTM, inter-DU LTM, and conditional LTM.
  • the intra-CU MCG LTM may be equivalent to or replaced by the intra-MN MCG LTM
  • the intra-CU SCG LTM may be equivalent to or replaced by the intra-SN SCG LTM
  • the inter-CU MCG LTM may be equivalent to or replaced by the inter-MN MCG LTM
  • the inter-CU SCG LTM may be equivalent to or replaced by the inter-SN SCG LTM.
  • the terminal device may release the configuration associated with the CU to which the source MCG belongs. That is, when the first configuration does not support the terminal device to switch back to the CU that was previously accessed, the first operation performed by the terminal device may include releasing the configuration associated with the CU to which the source MCG belongs. This is because, when the terminal device cannot switch back to the CU that was previously accessed, the configuration associated with the previous CU (i.e., the CU to which the source MCG belongs) is useless for the terminal device, so the terminal device may release the configuration associated with the CU to which the source MCG belongs to save resources.
  • the terminal device releasing the configuration associated with the CU to which the source MCG belongs may include the terminal device releasing the configuration associated with one or more CUs to which the source MCG belongs.
  • the terminal device releasing the configuration associated with the CU to which the source MCG belongs may mean that the terminal device releases all (all) configurations associated with the CU. In some embodiments, the terminal device releasing the configuration associated with the CU to which the source MCG belongs may mean that the terminal device releases part of the configuration associated with the CU.
  • the configuration associated with the target CU may be applied.
  • the configuration associated with the target CU includes at least one CU-associated configuration.
  • the terminal device may release the configuration associated with the source CU and apply the configuration associated with the target CU.
  • the terminal device may perform one or more of the following operations on the first configuration: releasing configurations associated with one or more SCGs, releasing configurations associated with one or more SCGs associated with the source MCG, retaining configurations associated with one or more SCGs associated with the target MCG, and suspending the use of configurations associated with one or more SCGs.
  • the terminal device releasing (or retaining) the configuration associated with one or more SCGs associated with the source MCG can also be understood as the terminal device releasing (or retaining) the configuration associated with one or more SCGs associated with the serving MCG.
  • the source MCG where the terminal device is located can also be called the serving MCG.
  • the terminal device releasing (or retaining) the configuration associated with one or more SCGs associated with the target MCG can also be understood as the terminal device releasing (or retaining) the configuration associated with one or more SCGs associated with the serving MCG.
  • the target MCG to which the terminal device switches can also be called the serving MCG.
  • the terminal device may perform one of the above operations on the first configuration. For example, the terminal device may release the configuration associated with one or more SCGs. Alternatively, the terminal device may release the configuration associated with one or more SCGs associated with the source MCG. Alternatively, the terminal device may retain the configuration associated with one or more SCGs associated with the target MCG, etc.
  • the terminal device releases (autonomously releases) one or more SCG-associated configurations in the first configuration, which is beneficial for saving resources.
  • the terminal device releasing one or more SCG-associated configurations in the first configuration can be understood as the terminal device not autonomously processing the one or more SCG-associated configurations. Afterwards, the terminal device can operate (such as release, retention, update, etc.) on the one or more SCG-associated configurations based on the instruction information of the network device.
  • the terminal device may also release the MCG-associated configuration and/or release the SCG-associated configuration, and the embodiments of the present application are not limited to this. That is, the terminal device may perform one or more of the following operations on the first configuration: retain one or more MCG-associated configurations, retain one or more SCG-associated configurations, release one or more MCG-associated configurations, and release one or more SCG-associated configurations. For example, the terminal device may retain one or more MCG-associated configurations, but release one or more SCG-associated configurations. Alternatively, the terminal device may release one or more MCG-associated configurations, and release one or more SCG-associated configurations, etc.
  • the terminal device retains one or more MCG-associated configurations, which can be understood as the terminal device can retain all MCG-associated configurations in the first configuration. In some embodiments, the terminal device retains one or more MCG-associated configurations, which can be understood as the terminal device can retain some MCG-associated configurations in the first configuration.
  • the terminal device retaining one or more SCG-associated configurations can be understood as the terminal device retaining all SCG-associated configurations in the first configuration. In some embodiments, the terminal device retaining one or more SCG-associated configurations can be understood as the terminal device retaining some SCG-associated configurations in the first configuration.
  • the terminal device suspending the use of one or more MCG-associated configurations can be understood as the terminal device suspending the use of all MCG-associated configurations in the first configuration. In some embodiments, the terminal device suspending the use of one or more MCG-associated configurations can be understood as the terminal device suspending the use of some MCG-associated configurations in the first configuration.
  • the terminal device suspending the use of one or more SCG-associated configurations can be understood as the terminal device suspending the use of all SCG-associated configurations in the first configuration. In some embodiments, the terminal device suspending the use of one or more SCG-associated configurations can be understood as the terminal device suspending the use of some SCG-associated configurations in the first configuration.
  • the terminal device may retain all MCG-associated configurations and all SCG-associated configurations in the first configuration.
  • the terminal device may retain the configuration associated with the source MCG in the first configuration and the configuration associated with all SCGs associated with the source MCG.
  • the terminal device may retain the configuration associated with the target MCG in the first configuration and the configuration associated with some SCGs associated with the target MCG, etc.
  • the first event is related to one or more of the following: RRC connection re-establishment, RRC release, MCG radio link failure, SCG radio link failure, and SCG release.
  • a radio link failure in the MCG may also be understood as a radio link failure in the MN, a radio link failure in the serving cell, or a radio link failure in the primary cell.
  • a radio link failure in the SCG may also be understood as a radio link failure in the SN or a radio link failure in the secondary cell.
  • the terminal device may perform multiple of the above operations on the first configuration. For example, the terminal device may release one or more SCG-associated configurations and release one or more MCG-associated configurations. Alternatively, the terminal device may retain one or more MCG-associated configurations and retain one or more SCG-associated configurations. Alternatively, the terminal device may release one or more SCG-associated configurations, retain one or more MCG-associated configurations, and so on. Alternatively, the terminal device may retain one or more MCG-associated configurations and suspend the use of one or more SCG-associated configurations. Alternatively, the terminal device may suspend the use of one or more MCG-associated configurations and release one or more SCG-associated configurations.
  • the terminal device can release (or retain or suspend the use of) all MCG-associated configurations in the first configuration, or can release (or retain or suspend the use of) some MCG-associated configurations in the first configuration. In some embodiments, the terminal device can release (or retain or suspend the use of) all SCG-associated configurations in the first configuration, or can release (or retain or suspend the use of) some SCG-associated configurations in the first configuration. As an example, the terminal device can release the configuration associated with the source MCG, and release the configurations associated with all SCGs associated with the source MCG. As another example, the terminal device can release all MCG-associated configurations in the first configuration, and release the configurations associated with all SCGs.
  • the first operation may include retaining configurations associated with one or more SCGs.
  • the first configuration being used to configure a conditional LTM may also be understood as the LTM corresponding to the first configuration being a conditional LTM.
  • the terminal device can retain one or more SCG-associated configurations to quickly add the SCG.
  • the terminal device can retain one or more SCG-associated configurations.
  • the terminal device can directly apply the retained MCG-associated configuration to perform access. For example, in an RRC release scenario, the terminal device can retain one or more MCG-associated configurations. In this way, when the cell to which the UE wants to resume/establish a connection happens to be an LTM candidate cell saved by the terminal device, the terminal device can directly apply the retained MCG-associated configuration to perform access.
  • Examples 1 to 3 can be used alone or in combination, and the embodiments of the present application do not limit this.
  • the terminal device retains part or all of the configurations in the first configuration under the scenario listed in any one of Examples 1 to 3, the terminal device can subsequently release or suspend the use of the previously retained configuration under the scenario listed in any one of Examples 1 to 3.
  • the terminal device suspends the use of part or all of the configurations in the first configuration under the scenario listed in any one of Examples 1 to 3
  • the terminal device can subsequently release or restore the previously suspended configuration under the scenario listed in any one of Examples 1 to 3.
  • the terminal device when the terminal device executes the LTM process, it retains part or all of the configurations in the first configuration (such as the configuration associated with the CU to which the target MCG belongs). Then, when the terminal device subsequently executes the RRC connection re-establishment or RRC release process, it can release part or all of the configurations retained in the LTM process (such as the configuration associated with the CU to which the target MCG belongs).
  • the terminal device when the terminal device executes the LTM process, it retains the configuration of one or more MCG associations. When the terminal device subsequently executes PSCell addition/change, it continues to retain the configuration of one or more MCG associations. When the terminal device executes SCG release, it can release the configuration of one or more MCG associations.
  • the terminal device when the terminal device executes the LTM process, it suspends the use of one or more MCG associated configurations.
  • a device performs a PSCell addition/change it may release the configuration associated with one or more MCGs that were previously suspended.
  • the terminal device may first determine the first operation, that is, determine the processing method of the first configuration.
  • the embodiments of the present application do not limit the manner in which the terminal device determines the first operation.
  • the first operation may be determined based on one or more of the following: protocol provisions, indication information sent by a network device, an event triggering the first operation, or pre-configured information. This is described below.
  • Method 1 Determine the first operation based on the protocol
  • the protocol may specify a first operation of the terminal device for the first configuration, that is, the protocol may specify how the terminal device handles the first configuration. In this way, the terminal device may perform a corresponding operation on the first configuration according to the protocol provisions (or protocol agreement).
  • FIG6 is a flow chart of a method for wireless communication provided by another embodiment of the present application.
  • the method shown in FIG6 is described from the perspective of interaction between a terminal device and a network device, which may be, for example, the terminal device 120 and the network device 110 shown in FIG1 .
  • the method shown in FIG6 may include steps S610 and S620.
  • step S610 the network device sends instruction information to the terminal device.
  • the instruction information is used to indicate a first operation for the first configuration.
  • the instruction information is used to indicate a processing method for the first configuration.
  • the embodiments of the present application do not specifically limit the event that triggers the first operation.
  • the event that triggers the first operation may be an event related to the mobility of the terminal device, or in other words, the event that triggers the first operation may be a mobility event.
  • the event that triggers the first operation may include one or more of the following: inter-CU LTM, intra-CU LTM, inter-DU LTM, intra-DU LTM, PCell change, PSCell change/addition, RRC connection re-establishment, RRC release, MCG radio link failure, SCG radio link failure, SCG release, etc.
  • the terminal device may release the first configuration (e.g., release part or all of the configurations in the first configuration).
  • the terminal device may retain the first configuration.
  • the terminal device may wait for the network device to subsequently instruct the first operation on the first configuration.
  • Method 4 Determine the first operation based on pre-configured information
  • the terminal device may determine the first operation based on pre-configuration information sent by the network device.
  • the pre-configuration information may include a cell group identifier associated with the candidate cell.
  • the network device may associate a cell group identifier with one or more candidate cells, and then the terminal device may determine a first operation for the candidate cell based on the cell group identifier associated with the candidate cell.
  • the pre-configuration information may include a cell group identifier associated with a first candidate cell (which may be any candidate cell), and then the terminal device may determine a first operation corresponding to the first candidate cell based on the cell group identifier, such as retaining/releasing/suspending the use of the first configuration corresponding to the first candidate cell.
  • the first operation is triggered based on a first event, and the first event is related to the mobility of the terminal device.
  • the first type of switching includes one or more of the following: inter-CU LTM, intra-CU LTM, inter-DU LTM, intra-DU LTM, conditional LTM; wherein, LTM includes MCG LTM and/or SCG LTM.
  • the first event is related to an inter-CU primary cell group MCG LTM or a primary cell change
  • the first configuration includes one or more MCG-associated configurations
  • the first operation includes one or more of the following: retaining the one or more MCG-associated configurations; releasing the configuration associated with the CU to which the source MCG belongs; suspending the use of the configuration associated with the CU to which the source MCG belongs; releasing the target MCG association configuration.
  • the first configuration does not support the terminal device switching back to the cell previously accessed, and the first operation includes releasing the configuration associated with the target MCG.
  • the first event is related to inter-CU MCG LTM or primary cell change
  • the first configuration includes configurations associated with one or more secondary cell groups SCG
  • the first operation includes one or more of the following: releasing the configurations associated with the one or more SCGs; releasing the configurations associated with one or more SCGs associated with the source MCG; retaining the configurations associated with one or more SCGs associated with the target MCG; suspending the use of the configurations associated with the one or more SCGs.
  • the first event is related to one or more of the following: RRC connection re-establishment, RRC release, MCG radio link failure, SCG radio link failure, SCG release;
  • the first configuration includes one or more MCG-associated configurations and/or one or more SCG-associated configurations
  • the first operation includes one or more of the following: releasing the one or more SCG-associated configurations; releasing the one or more MCG-associated configurations; retaining the one or more MCG-associated configurations; retaining the one or more SCG-associated configurations; suspending the use of the one or more MCG-associated configurations; suspending the use of the one or more SCG-associated configurations.
  • the indication information is carried in one or more of the following: cell switching command; RRC reconfiguration message; the first configuration; MAC CE.
  • the MAC CE is used to indicate first operations corresponding to multiple candidate cells, and the first operations corresponding to the multiple candidate cells are the same or different.
  • the pre-configuration information includes a cell group identifier associated with the first candidate cell, and the cell group identifier is used to determine a first operation corresponding to the first candidate cell.
  • the first configuration includes one or more of the following: configuration of one or more candidate cells; measurement configuration associated with the one or more candidate cells; early synchronization configuration associated with the one or more candidate cells; measurement reporting condition configuration associated with the one or more candidate cells; and switching condition configuration associated with the one or more candidate cells.
  • FIG8 is a schematic diagram of the structure of a network device provided in an embodiment of the present application.
  • the network device 800 shown in FIG8 may include a sending module 810.
  • the sending module 810 may be configured to send an instruction message to a terminal device, wherein the instruction message is configured to indicate a first operation for a first configuration, wherein the first configuration is configured to configure LTM, wherein the first operation includes one or more of the following: releasing part or all of the configurations in the first configuration; retaining part or all of the configurations in the first configuration; or suspending the use of part or all of the configurations in the first configuration.
  • the first operation is triggered based on a first event, and the first event is related to the mobility of the terminal device.
  • the first event includes one or more of the following: the terminal device triggers a first type of switching; the terminal device successfully completes the first type of switching; the terminal device receives a switching command for the first type of switching; wherein the first type of switching includes LTM-related switching.
  • the first type of switching includes one or more of the following: inter-CU LTM, intra-CU LTM, inter-DU LTM, intra-DU LTM, conditional LTM; wherein, LTM includes MCG LTM and/or SCG LTM.
  • the first event is related to the inter-CU main cell group MCG LTM or the main cell change
  • the first configuration includes one or more MCG-associated configurations
  • the first operation includes one or more of the following: retaining the one or more MCG-associated configurations; releasing the CU-associated configuration to which the source MCG belongs; suspending the use of the CU-associated configuration to which the source MCG belongs; releasing the target MCG-associated configuration.
  • the first configuration does not support the terminal device switching back to the CU previously accessed, and the first operation includes releasing the configuration associated with the CU to which the source MCG belongs.
  • the first configuration does not support the terminal device switching back to the cell previously accessed, and the first operation includes releasing the configuration associated with the target MCG.
  • the first event is related to inter-CU MCG LTM or primary cell change
  • the first configuration includes configurations associated with one or more secondary cell groups SCG
  • the first operation includes one or more of the following: releasing the configurations associated with the one or more SCGs; releasing the configurations associated with one or more SCGs associated with the source MCG; retaining the configurations associated with one or more SCGs associated with the target MCG; suspending the use of the configurations associated with the one or more SCGs.
  • the first event is related to one or more of the following: intra-CU LTM, inter-CU SCG LTM, primary and secondary cell addition/change;
  • the first configuration includes one or more MCG-associated configurations and/or one or more SCG-associated configurations
  • the first operation includes one or more of the following: retaining the one or more MCG-associated configurations; retaining the one or more SCG-associated configurations; suspending the use of the one or more MCG-associated configurations; suspending the use of the one or more SCG-associated configurations.
  • the first event is related to one or more of the following: RRC connection re-establishment, RRC release, MCG radio link failure, SCG radio link failure, SCG release;
  • the first configuration includes one or more MCG-associated configurations and/or one or more SCG-associated configurations
  • the first operation includes one or more of the following: releasing the one or more SCG-associated configurations; releasing the one or more MCG-associated configurations; retaining the one or more MCG-associated configurations; retaining the one or more SCG-associated configurations; suspending the use of the one or more MCG-associated configurations; suspending the use of the one or more SCG-associated configurations.
  • the first configuration is used to configure conditional LTM or the first configuration supports the function added by SCG, and the first operation includes retaining the configuration associated with the one or more SCGs.
  • the indication information is carried in one or more of the following: cell switching command; RRC reconfiguration message; the first configuration; MAC CE.
  • the MAC CE is used to indicate first operations corresponding to multiple candidate cells, and the first operations corresponding to the multiple candidate cells are the same or different.
  • the first configuration includes one or more of the following: configuration of one or more candidate cells; measurement configuration associated with the one or more candidate cells; early synchronization configuration associated with the one or more candidate cells; measurement reporting condition configuration associated with the one or more candidate cells; and switching condition configuration associated with the one or more candidate cells.
  • the suspending use of the first configuration includes: retaining the first configuration, but not performing measurement and/or measurement reporting related to the first configuration.
  • the sending module 810 may be a transceiver 930.
  • the network device 800 may further include a processor 910 and a memory 920, as specifically shown in FIG9 .
  • Figure 9 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • the dashed lines in Figure 9 indicate that the unit or module is optional.
  • the device 900 may be used to implement the method described in the above method embodiment.
  • the device 900 may be a chip, a terminal device, or a network device.
  • the device 900 may include one or more processors 910.
  • the processor 910 may support the device 900 to implement the method described in the above method embodiment.
  • the processor 910 may be a general-purpose processor or a special-purpose processor.
  • the processor may be a central processing unit (CPU).
  • the processor may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processor
  • ASIC application-specific integrated circuits
  • FPGA field programmable gate arrays
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the present application also provides a computer-readable storage medium for storing a program.
  • the computer-readable storage medium can be applied to a terminal device or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal device or network device in each embodiment of the present application.
  • the present application also provides a computer program that can be applied to a terminal device or network device provided in the present application, and enables a computer to execute the method performed by the terminal device or network device in each embodiment of the present application.
  • B corresponding to A means that B is associated with A and B can be determined based on A.
  • determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and/or other information.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.

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

Abstract

La présente invention concerne un procédé de communication sans fil, un dispositif terminal et un dispositif de réseau. Le procédé comprend l'étape suivante dans laquelle : un dispositif terminal exécute une première opération relative à une première configuration, la première configuration étant utilisée pour configurer une LTM, et la première opération comprenant une ou plusieurs des opérations suivantes : la libération d'une partie ou de la totalité de la première configuration ; la conservation d'une partie ou de la totalité de la première configuration ; et la suspension de l'utilisation d'une partie ou de la totalité de la première configuration.
PCT/CN2024/083933 2024-03-26 2024-03-26 Procédé de communication sans fil, dispositif terminal et dispositif de réseau Pending WO2025199772A1 (fr)

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PCT/CN2024/083933 WO2025199772A1 (fr) 2024-03-26 2024-03-26 Procédé de communication sans fil, dispositif terminal et dispositif de réseau

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Citations (4)

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Publication number Priority date Publication date Assignee Title
US20220124793A1 (en) * 2019-09-11 2022-04-21 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Wireless communication method, terminal device, and network device
CN117202226A (zh) * 2022-05-31 2023-12-08 维沃移动通信有限公司 信息处理方法、装置、网络侧设备及终端
CN117729596A (zh) * 2024-02-08 2024-03-19 荣耀终端有限公司 候选主小区配置信息的处理方法、设备、存储介质及产品
CN117729597A (zh) * 2024-02-08 2024-03-19 荣耀终端有限公司 候选小区配置信息的处理方法、设备、存储介质及产品

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220124793A1 (en) * 2019-09-11 2022-04-21 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Wireless communication method, terminal device, and network device
CN117202226A (zh) * 2022-05-31 2023-12-08 维沃移动通信有限公司 信息处理方法、装置、网络侧设备及终端
CN117729596A (zh) * 2024-02-08 2024-03-19 荣耀终端有限公司 候选主小区配置信息的处理方法、设备、存储介质及产品
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