Cell handover method and related device

Abstract

The present application provides a cell handover method and a related device. The method comprises: receiving assistance information from a terminal device, the assistance information including first handover assistance information and / or second handover assistance information, wherein the first handover assistance information is used for indicating whether the terminal device has the capability of receiving a multicast service of interest in a cell DTX mode, and the second handover assistance information is used for indicating whether the terminal device has the capability of receiving a broadcast service of interest in the cell DTX mode; on the basis of the assistance information, executing handover decision to determine a target cell; and sending a handover command to the terminal device, the handover command being used for instructing the terminal device to hand over to the target cell.

Description

A cell switching method and related equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 8, 2024, with application number 202410177924.2 and invention name “A cell switching method and related equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and in particular to a cell switching method and related equipment. Background Art

[0003] Currently, discussions on cellular communication technology focus on terminal power consumption (due to battery size limitations and the sensitive impact on user experience). However, with the recent development of green communications and operators' self-interest, network energy conservation has also begun to be discussed. Rel-18 / 19 established a project focusing on network energy conservation.

[0004] In the current mechanism design, only for connected terminals, a cell discontinuous receiving (DTX) pattern can be configured for the terminal. The configuration is similar to the UE's DRX mechanism and is periodically active. Specifically, Cell DTX means that the base station only turns on the transmission function during the activation period. In other words, if it is not active, the terminal does not require to receive downlink dynamic scheduling, semi-static downlink data transmission, etc. The current problem is that the UE's DRX can achieve a power-saving effect as long as the UE is configured. However, for the Cell DTX solution, although the configuration is all for the UE, because the cell or base station serves multiple terminals, a large number of UEs need to be configured with a similar DTX pattern in order to achieve energy-saving effects for the network.

[0005] In order to achieve the above effect, it is necessary to aggregate UEs as much as possible into cells that support the cell DTX mode. However, this problem has yet to be solved. Summary of the Invention

[0006] The present application provides a cell switching method and related devices for switching a terminal device to a cell supporting a cell DTX mode, thereby facilitating energy saving.

[0007] The first aspect of the present application provides a cell switching method:

[0008] The access network device receives auxiliary information from the terminal device, where the auxiliary information includes first handover auxiliary information and / or second handover auxiliary information. The first handover auxiliary information is used to indicate whether the terminal device is capable of receiving the multicast service of interest through the cell DTX mode, and the second handover auxiliary information is used to indicate whether the terminal device is capable of receiving the broadcast service of interest through the cell DTX mode. The access network device performs a handover decision based on the auxiliary information to determine the target cell. The access network device sends a handover command to the terminal device, where the handover command is used to instruct the terminal device to switch to the target cell.

[0009] In this application, the terminal device reports switching auxiliary information to the access network device, so that the access network device can determine that the terminal device is capable of receiving and is interested in multicast services / broadcast services through the cell DTX mode, thereby selecting a cell that supports the multicast services / broadcast services that the terminal device is interested in, and the multicast services / broadcast services use the cell DTX mode, and allowing the terminal device to switch to the cell, which is conducive to the terminal devices gathering in the cell that supports the cell DTX mode, thereby achieving network energy saving.

[0010] In a possible implementation, the first handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the multicast service of interest.

[0011] In a possible implementation, the second handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the broadcast service of interest.

[0012] In a possible implementation manner, the first handover assistance information is carried in a UAI message.

[0013] In a possible implementation manner, the second handover assistance information is carried in an MBMS interest indicator message.

[0014] The second aspect of the present application provides a cell switching method:

[0015] The terminal device sends auxiliary information to the access network device, where the auxiliary information includes first switching auxiliary information and / or second switching auxiliary information. The auxiliary information is used by the access network device to perform a switching decision to determine the target cell. The first switching auxiliary information is used to indicate whether the terminal device is capable of receiving the multicast service of interest through the cell DTX mode, and the second switching auxiliary information is used to indicate whether the terminal device is capable of receiving the broadcast service of interest through the cell DTX mode. The terminal device receives a switching command from the access network device, where the switching command is used to instruct the terminal device to switch to the target cell. The terminal device switches to the target cell according to the switching command.

[0016] In a possible implementation, the first handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the multicast service of interest.

[0017] In a possible implementation, the second handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the broadcast service of interest.

[0018] In a possible implementation manner, the first handover assistance information is carried in a UAI message.

[0019] In a possible implementation manner, the second handover assistance information is carried in an MBMS interest indicator message.

[0020] A third aspect of the present application provides an access network device, including a transceiver unit and a processing unit.

[0021] a transceiver unit, configured to receive auxiliary information from a terminal device, the auxiliary information including first handover auxiliary information, and / or

[0022] Or, the second switching auxiliary information, the first switching auxiliary information is used to indicate whether the terminal device is capable of receiving the multicast service of interest through the cell DTX mode, and the second switching auxiliary information is used to indicate whether the terminal device is capable of receiving the broadcast service of interest through the cell DTX mode.

[0023] The processing unit is configured to perform a handover decision based on the auxiliary information to determine a target cell.

[0024] The transceiver unit is also used to send a switching command to the terminal device, and the switching command is used to instruct the terminal device to switch to the target cell.

[0025] In a possible implementation, the first handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the multicast service of interest.

[0026] In a possible implementation, the second handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the broadcast service of interest.

[0027] In a possible implementation manner, the first handover assistance information is carried in a UAI message.

[0028] In a possible implementation manner, the second handover assistance information is carried in an MBMS interest indicator message.

[0029] A fourth aspect of the present application provides a terminal device, including a transceiver unit and a processing unit.

[0030] The transceiver unit is configured to send auxiliary information to the access network device, wherein the auxiliary information includes first handover auxiliary information and / or second handover auxiliary information. The auxiliary information is used by the access network device to perform handover decision to determine a target cell.

[0031] The first switching auxiliary information is used to indicate whether the terminal device is capable of receiving the multicast service of interest through the cell DTX mode, and the second switching auxiliary information is used to indicate whether the terminal device is capable of receiving the broadcast service of interest through the cell DTX mode.

[0032] The transceiver unit is also used to receive a switching command from the access network device, where the switching command is used to instruct the terminal device to switch to a target cell, where the target cell is determined by the access network device based on the first switching auxiliary information and the second switching auxiliary information.

[0033] A processing unit is configured to switch to a target cell according to the switching command.

[0034] In a possible implementation, the first handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the multicast service of interest.

[0035] In a possible implementation, the second handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the broadcast service of interest.

[0036] In a possible implementation manner, the first handover assistance information is carried in a UAI message.

[0037] In a possible implementation manner, the second handover assistance information is carried in an MBMS interest indicator message.

[0038] In a fifth aspect, the present application provides an access network device, comprising a processor and a memory, wherein the processor is coupled to the memory, and the memory is used to store instructions. When the instructions are executed by the processor, the access network device executes the method in the aforementioned first aspect.

[0039] In a sixth aspect, the present application provides a terminal device comprising a processor and a memory, wherein the processor is coupled to the memory, and the memory is used to store instructions. When the instructions are executed by the processor, the terminal device executes the method in the aforementioned second aspect.

[0040] A seventh aspect of the present application provides a computer-readable storage medium:

[0041] Instructions are stored thereon, and when a computer executes the instructions, the computer is caused to execute the methods in the aforementioned various aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] FIG1 is a schematic diagram of an application scenario of the present application;

[0043] FIG2 is a schematic diagram of a flow chart of a cell switching method in this application;

[0044] FIG3 is a schematic diagram of first handover auxiliary information;

[0045] FIG4 is a schematic diagram of second handover auxiliary information;

[0046] FIG5 is a schematic diagram of business support information;

[0047] FIG6 is another schematic diagram of a flow chart of a cell switching method in the present application;

[0048] FIG7 is a schematic structural diagram of an access network device in this application;

[0049] FIG8 is a schematic structural diagram of a terminal device in this application;

[0050] FIG9 is a schematic structural diagram of a terminal device or access network device in this application. DETAILED DESCRIPTION

[0051] The following describes the embodiments of the present application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present application, rather than all the embodiments. Those skilled in the art will appreciate that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0052] The terms "first," "second," and the like in the specification and claims of this application and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatus.

[0053] The cell switching method in this application can be applied to long term evolution (LTE) systems, fifth generation mobile networks (5G) new radio (NR) systems, sixth generation mobile information technology (6G) systems and subsequent evolutionary systems, and this application does not limit this. As shown in Figure 1, the communication system includes at least a terminal device and an access network device. Among them, the terminal device may include a handheld device with a wireless connection function or a processing device connected to a wireless modem. The terminal device can communicate with the core network (for example, a 5G core network (5th generation core, 5GC)) via a radio access network (RAN) and can exchange voice and / or data with the RAN. The terminal device may also be referred to as a terminal, user equipment (UE), wireless terminal device, mobile terminal (MT) device, subscriber unit, subscriber station, mobile station (MS), mobile, remote station, access point (AP), remote terminal device, access terminal device, user terminal, user agent, or user device, etc.In addition, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) device, an augmented reality (AR) device, an extended reality (XR) service terminal, a cloud gaming (CG) service terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. It should be understood that the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0054] Access network equipment can be any device with wireless transceiver capabilities and can be used to perform air interface-related functions, such as radio link maintenance, radio resource management, and some mobility management functions. Furthermore, access network equipment can be configured with a baseband unit (BBU) that performs baseband signal processing. For example, the access network equipment can be the radio access network (RAN) currently providing services to terminal devices. Currently, some common examples of access network equipment include: Node B (NB), evolved Node B (eNB), next generation Node B (gNB) in 5G new radio (NR) systems, nodes in 6G systems (e.g., xNodeB), transmission reception point (TRP), radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B or home Node B (HNB)), etc. In addition, in network structures such as cloud radio access network (CloudRAN) or open radio access network (ORAN), access network equipment can include centralized units (CU) (also known as control units) and / or distributed units (DU). The RAN equipment including CU and DU splits the protocol layers of the gNB in ​​the NR system, centrally controlling some protocol layer functions in the CU and distributing some or all of the remaining protocol layer functions in the DU, which is then centrally controlled by the CU.

[0055] The cell switching method proposed in this application can be applied to the scenario of cell switching. Cell switching refers to the migration of the wireless link connection of a terminal device from a source cell to a target cell under the control of a wireless access network. It is a basic technical means to ensure seamless wireless mobile communication technology. The cell switching of a terminal device can be triggered by the access network device side. After the terminal device accesses a cell, the access network device sends a measurement control (Measure Control) message to the terminal device. The terminal device performs cell measurement according to the instruction of the measurement control message and sends a measurement report (Measure Report) to the access network device. After receiving the measurement report, the access network device executes a switching decision to determine the target cell. Finally, a switching command is sent to the terminal device. The terminal device performs cell switching under the action of the switching command to access the target cell.

[0056] Please refer to Figure 2 for a detailed description of the process of the cell switching method in this application:

[0057] 201. An access network device receives auxiliary information from a terminal device, where the auxiliary information includes first handover auxiliary information and / or second handover auxiliary information.

[0058] Referring to Figure 3 , the first handover assistance information is used to indicate whether the terminal device is capable of receiving each multicast service of interest via the cell DTX mode. Optionally, the first handover assistance information may also include first preference information indicating whether the terminal device prefers to receive each of the aforementioned multicast services via the cell DTX mode.

[0059] Referring to Figure 4 , the second handover assistance information is used to indicate whether the terminal device is capable of receiving each broadcast service of interest in the cell DTX mode. Optionally, the second handover assistance information may also include second preference information, indicating whether the terminal device prefers to receive each of the aforementioned broadcast services in the cell DTX mode.

[0060] If the terminal device only receives multicast services, the auxiliary information only includes the first switching auxiliary information; if the terminal device only receives broadcast services, the auxiliary information only includes the second switching auxiliary information; if the terminal device receives both broadcast services and multicast services, the auxiliary information includes the first switching auxiliary information and the second switching auxiliary information.

[0061] The terminal device may carry the first handover assistance information in a UE assistance information (UAI) message and send it to the access network device, and carry the second handover assistance information in an MBMS interest indicator message and send it to the access network device.

[0062] 202. The access network device performs a handover decision based on the auxiliary information to determine a target cell.

[0063] When a terminal device needs to switch cells, the access network device sends a measurement control message to the terminal device. The terminal device performs cell measurements based on the measurement control message and reports a measurement report to the access network device. The measurement report includes the signal quality of several measured cells.

[0064] In addition to the auxiliary information described above, as shown in Figure 5 , the access network device also obtains service support information for its own cell and the cells of its neighboring access network devices, including the measured cell. This service support information includes the multicast and broadcast services supported by the cell, as well as an indication of whether each multicast and broadcast service uses cell DTX mode.

[0065] The access network device performs a switching decision based on the above information, thereby determining the target cell. Exemplarily, if the auxiliary information only includes the first switching auxiliary information, and the first switching auxiliary information does not include the first tendency information. The access network device selects a cell that supports the target service using the cell DTX mode as the target cell among the measured cells whose signal quality reaches the threshold value, and the target service is a multicast service that the terminal device is interested in, and the terminal device is capable of receiving the multicast service through the cell DTX mode (determined based on the auxiliary information). If the first switching auxiliary information includes the first tendency information, similarly, the access network device selects a cell that supports the target service using the cell DTX mode as the target cell among the measured cells whose signal quality reaches the threshold value, and the target service is a multicast service that the terminal device is interested in, and the terminal device is capable of and tends to receive the multicast service through the cell DTX mode (determined based on the auxiliary information).

[0066] If the auxiliary information only includes the second switching auxiliary information, and the second switching auxiliary information does not include the second tendency information. The access network device selects a cell that supports the target service using the cell DTX mode as the target cell in the measured cell whose signal quality reaches the threshold value. The target service is the broadcast service that the terminal device is interested in, and the terminal device is capable of receiving the broadcast service through the cell DTX mode (determined based on the auxiliary information). If the second switching auxiliary information includes the second tendency information, similarly, the access network device selects a cell that supports the target service using the cell DTX mode as the target cell in the measured cell whose signal quality reaches the threshold value. The target service is the broadcast service that the terminal device is interested in, and the terminal device is capable of and tends to receive the broadcast service through the cell DTX mode (determined based on the auxiliary information).

[0067] If the auxiliary information includes the first handover auxiliary information and the second handover auxiliary information, and the first handover auxiliary information does not include the first preference information, and the second handover auxiliary information does not include the second preference information, the access network device selects a cell that supports the target service using the cell DTX mode as the target cell among the measured cells whose signal quality reaches the threshold value, where the target service is a multicast service or broadcast service of interest to the terminal device, and the terminal device is capable of receiving the multicast service or broadcast service using the cell DTX mode (determined based on the auxiliary information).

[0068] If the auxiliary information includes first handover auxiliary information and second handover auxiliary information, and the first handover auxiliary information includes first preference information, and the second handover auxiliary information includes second preference information, the access network device selects, from the measured cells whose signal quality reaches the threshold, a cell that supports a target service using the cell DTX mode as a target cell, where the target service is a multicast service or a broadcast service of interest to the terminal device, and the terminal device is capable of and prefers to receive the multicast service or the broadcast service using the cell DTX mode (determined based on the auxiliary information).

[0069] Of course, the above are only some examples. In actual implementation, the access network device may perform handover decision based on the auxiliary information and determine the target cell in various ways, which will not be listed here one by one.

[0070] 203. The access network device sends a handover command to the terminal device, where the handover command is used to instruct the terminal device to handover to the target cell.

[0071] After determining the target cell, the access network device sends a handover command to the terminal device, thereby instructing the terminal device to handover to the target cell. After receiving the handover command, the terminal device switches to the target cell according to the instruction of the handover command.

[0072] In this application, the terminal device reports switching auxiliary information to the access network device, so that the access network device can determine that the terminal device is capable of receiving and is interested in multicast services / broadcast services through the cell DTX mode, thereby selecting a cell that supports the multicast services / broadcast services that the terminal device is interested in, and the multicast services / broadcast services use the cell DTX mode, and allowing the terminal device to switch to the cell, which is conducive to the terminal devices gathering in the cell that supports the cell DTX mode, thereby achieving network energy saving.

[0073] The above describes a process of the cell switching method in the present application. Please refer to Figure 6. The following describes another process of the cell switching method in the present application:

[0074] 601. The terminal device sends auxiliary information to the access network device, where the auxiliary information includes first handover auxiliary information and / or second handover auxiliary information.

[0075] This step is similar to the aforementioned step 201 and will not be described in detail here. The auxiliary information is used by the access network device to perform handover decision to determine the target cell, which is similar to the aforementioned step 202.

[0076] 602. The terminal device receives a handover command from the access network device.

[0077] This step is similar to the aforementioned step 203 and will not be described in detail here.

[0078] 603. The terminal device switches to the target cell according to the switching command.

[0079] This step is similar to the aforementioned step 203 and will not be described in detail here.

[0080] The above describes the cell switching method in this application. The following describes the device in this application:

[0081] 7 , the access network device 700 in the present application includes a transceiver unit 701 and a processing unit 702. The transceiver unit 701 and the processing unit 702 may be implemented by software or hardware.

[0082] The transceiver unit 701 is used to receive auxiliary information from the terminal device, where the auxiliary information includes first switching auxiliary information and / or second switching auxiliary information, where the first switching auxiliary information is used to indicate whether the terminal device is capable of receiving the multicast service of interest through the cell DTX mode, and the second switching auxiliary information is used to indicate whether the terminal device is capable of receiving the broadcast service of interest through the cell DTX mode.

[0083] The processing unit 702 is configured to perform a handover decision according to the auxiliary information to determine a target cell.

[0084] The transceiver unit 701 is further used to send a handover command to the terminal device, where the handover command is used to instruct the terminal device to handover to the target cell.

[0085] In a possible implementation, the first handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the multicast service of interest.

[0086] In a possible implementation, the second handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the broadcast service of interest.

[0087] In a possible implementation manner, the first handover assistance information is carried in a UAI message.

[0088] In a possible implementation manner, the second handover assistance information is carried in an MBMS interest indicator message.

[0089] 8 , the terminal device 800 in the present application includes a transceiver unit 801 and a processing unit 802. The transceiver unit 801 and the processing unit 802 may be implemented by software or hardware.

[0090] The transceiver unit 801 is configured to send auxiliary information to the access network device, where the auxiliary information includes first handover auxiliary information and / or second handover auxiliary information. The auxiliary information is used by the access network device to perform handover decision to determine a target cell.

[0091] The first switching auxiliary information is used to indicate whether the terminal device is capable of receiving the multicast service of interest through the cell DTX mode, and the second switching auxiliary information is used to indicate whether the terminal device is capable of receiving the broadcast service of interest through the cell DTX mode.

[0092] The transceiver unit 801 is further used to receive a switching command from the access network device, where the switching command is used to instruct the terminal device to switch to the target cell.

[0093] The processing unit 802 is configured to switch to a target cell according to a handover command.

[0094] In a possible implementation, the first handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the multicast service of interest.

[0095] In a possible implementation, the second handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the broadcast service of interest.

[0096] In a possible implementation manner, the first handover assistance information is carried in a UAI message.

[0097] In a possible implementation manner, the second handover assistance information is carried in an MBMS interest indicator message.

[0098] FIG9 is a schematic diagram of the structure of a device provided by the present application, which is used to implement the methods performed by the access network device or terminal device in the aforementioned embodiments. Device 900 may include one or more central processing units (CPUs) 901 and a memory 905, wherein the memory 905 stores one or more applications or data.

[0099] Memory 905 may be volatile or persistent storage. The program stored in memory 905 may include one or more modules, each of which may include a series of instruction operations on the server. Furthermore, the central processing unit 901 may be configured to communicate with memory 905 and execute the series of instruction operations in memory 905 on the device 900. The device 900 may also include one or more power supplies 902, one or more wired or wireless network interfaces 903, one or more input / output interfaces 904, and / or one or more operating systems.

[0100] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0101] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0102] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0103] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0104] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

Claims

1. A cell handover method, characterized in that: include: The access network device receives auxiliary information from the terminal device, the auxiliary information including first handover auxiliary information and / or second handover auxiliary information, the first handover auxiliary information being used to indicate whether the terminal device is capable of receiving a multicast service of interest through a cell DTX mode, and the second handover auxiliary information being used to indicate whether the terminal device is capable of receiving a broadcast service of interest through a cell DTX mode; The access network device performs a handover decision according to the auxiliary information to determine a target cell; The access network device sends a switching command to the terminal device, where the switching command is used to instruct the terminal device to switch to the target cell.

2. The method according to claim 1, characterized in that The first handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the multicast service of interest.

3. The method according to claim 1 or 2, characterized in that The second switching auxiliary information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the broadcast service of interest.

4. The method according to claim 3, characterized in that The first handover assistance information is carried in a UAI message.

5. The method according to claim 4, characterized in that The second handover assistance information is carried in an MBMS interest indicator message.

6. A cell switching method, characterized in that: include: The terminal device sends auxiliary information to the access network device, where the auxiliary information includes first handover auxiliary information and / or second handover auxiliary information, and the auxiliary information is used by the access network device to perform a handover decision to determine a target cell; The first handover assistance information is used to indicate whether the terminal device is capable of receiving a multicast service of interest through a cell DTX mode, and the second handover assistance information is used to indicate whether the terminal device is capable of receiving a broadcast service of interest through a cell DTX mode; The terminal device receives a handover command from the access network device, where the handover command is used to instruct the terminal device to handover to the target cell; The terminal device switches to the target cell according to the switching command.

7. The method according to claim 6, characterized in that The first handover assistance information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the multicast service of interest.

8. The method according to claim 6 or 7, characterized in that The second switching auxiliary information is further used to indicate whether the terminal device prefers to use the cell DTX mode to receive the broadcast service of interest.

9. The method according to claim 8, characterized in that The first handover assistance information is carried in a UAI message.

10. The method according to claim 9, characterized in that The second handover assistance information is carried in an MBMS interest indicator message.

11. An access network device, characterized in that: The device comprises a processor and a memory, wherein the processor is coupled to the memory, and the memory is used to store instructions. When the instructions are executed by the processor, the access network device executes the method according to any one of claims 1 to 5.

12. A terminal device, characterized in that: The terminal device comprises a processor and a memory, wherein the processor is coupled to the memory, and the memory is used to store instructions. When the instructions are executed by the processor, the terminal device executes the method according to any one of claims 6 to 10.

13. A computer-readable storage medium, characterized in that Instructions are stored thereon, and when a computer executes the instructions, the computer performs the method according to any one of claims 1 to 10.

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