MBS service configuration method and device, network equipment, and terminal equipment

Abstract

An embodiment of the present application provides a method and apparatus for configuring an MBS service, a network device, and a terminal device. The method includes: a first cell receives information about a first MBS service sent by a second cell, where the first MBS service is an MBS service expected by the terminal device or an MBS service being received; the first cell determines MBS service configuration information based on the information about the first MBS service, and sends the MBS service configuration information to the terminal device through a switching command.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a configuration method and apparatus, network equipment, and terminal equipment for a Multicast Broadcast Service (MBS) service. Background Art

[0002] In the New Radio (NR) system, broadcast-type MBS services are supported, and terminal devices can receive broadcast MBS services in the Radio Resource Control (RRC) idle state, RRC inactive state, or RRC connected state.

[0003] For a terminal device in the RRC connected state, if a cell switch occurs while receiving MBS services, the terminal device needs to re-read the system broadcast message or Multicast Control Channel (MCCH) signaling in the target cell to obtain the configuration information of the MBS service in order to continue receiving the MBS service. This increases the interruption delay of the MBS service to a certain extent. Summary of the Invention

[0004] The embodiments of the present application provide a method and apparatus for configuring an MBS service, a network device, and a terminal device.

[0005] The MBS service configuration method provided in the embodiment of the present application includes:

[0006] The first cell receives information about a first MBS service sent by the second cell, where the first MBS service is an MBS service expected by the terminal device or an MBS service being received;

[0007] The first cell determines MBS service configuration information according to the information of the first MBS service, and sends the MBS service configuration information to the terminal device through a handover command.

[0008] The MBS service configuration method provided in the embodiment of the present application includes:

[0009] The terminal device sends information about a first MBS service to the second cell, where the first MBS service is an MBS service desired by the terminal device or an MBS service being received; the information about the first MBS service is forwarded by the second cell to the first cell;

[0010] The terminal device receives a handover command sent by the first cell, where the handover command carries MBS service configuration information, and the MBS service configuration information is determined based on information of the first MBS service.

[0011] The MBS service configuration device provided in the embodiment of the present application is applied to a network device corresponding to a first cell, and the device includes:

[0012] a receiving unit, configured to receive information about a first MBS service sent by a second cell, where the first MBS service is an MBS service expected by a terminal device or an MBS service being received;

[0013] a determining unit, configured to determine MBS service configuration information according to the information of the first MBS service;

[0014] A sending unit is used to send the MBS service configuration information to the terminal device through a switching command.

[0015] The MBS service configuration device provided in the embodiment of the present application is applied to a terminal device, and the device includes:

[0016] a sending unit, configured to send information about a first MBS service to a second cell, where the first MBS service is an MBS service desired by a terminal device or an MBS service being received; the information about the first MBS service is forwarded by the second cell to the first cell;

[0017] The receiving unit is configured to receive a handover command sent by the first cell, where the handover command carries MBS service configuration information, and the MBS service configuration information is determined based on information of the first MBS service.

[0018] The network device provided in an embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned MBS service configuration method.

[0019] The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned MBS service configuration method.

[0020] The chip provided in the embodiment of the present application is used to implement the above-mentioned MBS service configuration method.

[0021] Specifically, the chip includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned MBS service configuration method.

[0022] The computer-readable storage medium provided in the embodiments of the present application is used to store a computer program, which enables a computer to execute the above-mentioned MBS service configuration method.

[0023] The computer program product provided in the embodiments of the present application includes computer program instructions, which enable a computer to execute the above-mentioned MBS service configuration method.

[0024] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned method for configuring the MBS service.

[0025] With the above technical solution, a terminal device sends information about a first MBS service to a second cell (i.e., the original cell being handed off). Here, the first MBS service is the MBS service that the terminal device expects or is currently receiving. The second cell forwards the information about the first MBS service to the first cell (i.e., the target cell being handed off). The first cell determines MBS service configuration information based on the information about the first MBS service and sends the MBS service configuration information to the terminal device via a handover command. During the handover process, the terminal device can directly obtain the MBS service configuration information from the handover command, without having to wait for the first cell to obtain the MBS service configuration information from the first cell's system broadcast message or MCCH signaling after handover, thereby reducing the MBS service interruption delay during the handover process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application;

[0028] Figure 2 This is a flowchart of a method for configuring an MBS service provided in an embodiment of the present application;

[0029] Figure 3 This is a schematic diagram of the structure of the MBS service configuration device provided in the embodiment of the present application. Figure 1 ;

[0030] Figure 4 This is a schematic diagram of the structure of the MBS service configuration device provided in the embodiment of the present application. Figure 2 ;

[0031] Figure 5 This is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0032] Figure 6 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0033] Figure 7It is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, 5G communication system or future communication system, etc.

[0036] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminals located within the coverage area. Optionally, the network device 110 may be an evolved base station (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN), or the network device may be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future communication system, etc.

[0037] The communication system 100 also includes at least one terminal 120 located within the coverage area of ​​the network device 110. As used herein, "terminal" includes, but is not limited to, a connection via a wired line, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection; and / or another data connection / network; and / or via a wireless interface, such as for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and / or another terminal configured to receive / send communication signals; and / or an Internet of Things (IoT) device. A terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal," "wireless terminal," or "mobile terminal." Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, web browsers, organizers, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A terminal may be referred to as an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

[0038] Optionally, the terminals 120 may perform device-to-device (D2D) communication with each other.

[0039] Optionally, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0040] Figure 1 One network device and two terminals are shown as an example. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminals within its coverage area. This embodiment of the present application does not limit this.

[0041] Optionally, the 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.

[0042] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be called a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal 120 with communication functions. The network device 110 and the terminal 120 may be the specific devices described above and will not be repeated here; the communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0043] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0044] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions related to the embodiments of the present application are described below.

[0045] With the pursuit of speed, latency, high-speed mobility, energy efficiency and the diversity and complexity of services in future life, the 3GPP (3 rd The 3GPP (3rd Generation Partnership Project) international standards organization has begun developing 5G. The main application scenarios of 5G are: enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC).

[0046] On the one hand, eMBB still aims to provide users with multimedia content, services, and data, and demand for this is growing rapidly. On the other hand, since eMBB may be deployed in different scenarios, such as indoors, in urban areas, and in rural areas, its capabilities and requirements vary significantly. Therefore, it cannot be generalized and requires detailed analysis based on specific deployment scenarios. Typical applications of URLLC include industrial automation, power automation, remote medical operations (surgery), and traffic safety. Typical characteristics of mMTC include high connection density, small data volumes, latency-insensitive services, low module costs, and long service life.

[0047] In the early days of NR deployment, achieving complete NR coverage was difficult, resulting in a typical network coverage model consisting of wide-area LTE coverage and isolated NR coverage. Furthermore, a large number of LTE deployments operate below 6 GHz, leaving limited spectrum available for 5G. Therefore, NR must explore spectrum applications above 6 GHz, despite the limited coverage and rapid signal fading in higher frequency bands. Furthermore, to protect mobile operators' initial investments in LTE, a tight interworking mode between LTE and NR was proposed.

[0048] RRC status

[0049] To reduce air interface signaling and quickly restore wireless connections and data services, 5G defines a new Radio Resource Control (RRC) state, the RRC_INACTIVE state. This state is different from the RRC_IDLE state and the RRC_ACTIVE state.

[0050] in,

[0051] 1) RRC_IDLE state (abbreviated as idle state): Mobility is based on UE cell selection and reselection, paging is initiated by the Core Network (CN), and the paging area is configured by the CN. There is no UE context on the base station side and no RRC connection exists.

[0052] 2) RRC_CONNECTED state (also called connected state): An RRC connection exists, and a UE context exists on both the base station and the UE. The network knows the UE's location at the cell level. Mobility is controlled by the network. Unicast data can be transmitted between the UE and the base station.

[0053] 3) RRC_INACTIVE state (abbreviated as inactive state): Mobility is based on UE cell selection and reselection, there is a connection between CN and NR, the UE context exists on a certain base station, paging is triggered by RAN, and the RAN-based paging area is managed by RAN. The network side knows the UE location based on the RAN paging area level.

[0054] Multimedia Broadcast Multicast Service (MBMS)

[0055] MBMS is a technology that transmits data from one data source to multiple terminal devices by sharing network resources. While providing multimedia services, it can effectively utilize network resources and achieve broadcast and multicast of multimedia services at a higher rate (such as 256kbps).

[0056] Because MBMS spectrum efficiency is low and insufficient to effectively carry and support mobile TV services, 3GPP has explicitly proposed enhancing support for downlink high-speed MBMS services in LTE and has defined design requirements for the physical layer and air interface.

[0057] 3GPP Release 9 introduced evolved MBMS (eMBMS) into LTE. eMBMS introduced the concept of a single frequency network (SFN), namely, Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN). MBSFN uses a unified frequency to transmit service data simultaneously across all cells, while ensuring inter-cell synchronization. This approach significantly improves the overall signal-to-noise ratio distribution of the cell, and consequently, significantly increases spectrum efficiency. eMBMS implements service broadcast and multicast based on the IP multicast protocol.

[0058] In LTE or LTE-Advanced (LTE-A), MBMS only has a broadcast bearer mode, not a multicast bearer mode. In addition, the reception of MBMS services is applicable to terminal devices in an idle state or a connected state.

[0059] 3GPP R13 introduced the Single Cell Point To Multipoint (SC-PTM) concept, which is based on the MBMS network architecture.

[0060] MBMS introduces new logical channels, including the Single Cell-Multicast Control Channel (SC-MCCH) and the Single Cell-Multicast Transport Channel (SC-MTCH). SC-MCCH and SC-MTCH are mapped to the Downlink Shared Channel (DL-SCH). Furthermore, DL-SCH is mapped to the Physical Downlink Shared Channel (PDSCH). SC-MCCH and SC-MTCH are logical channels, DL-SCH is a transport channel, and PDSCH is a physical channel. SC-MCCH and SC-MTCH do not support Hybrid Automatic Repeat reQuest (HARQ) operations.

[0061] MBMS introduces a new System Information Block (SIB) type, namely SIB20. Specifically, the configuration information of SC-MCCH is transmitted through SIB20, and there is only one SC-MCCH in a cell. The configuration information of SC-MCCH includes: the modification period of SC-MCCH, the repetition period of SC-MCCH, and the radio frame and subframe for scheduling SC-MCCH. Furthermore, 1) the boundary of the modification period of SC-MCCH satisfies SFN mod m=0, where SFN represents the system frame number of the boundary, and m is the modification period of SC-MCCH configured in SIB20 (i.e., sc-mcch-ModificationPeriod). 2) The radio frame for scheduling SC-MCCH satisfies: SFN mod mcch-RepetitionPeriod=mcch-Offset, where SFN represents the system frame number of the radio frame, mcch-RepetitionPeriod represents the repetition period of SC-MCCH, and mcch-Offset represents the offset of SC-MCCH. 3) The subframe for scheduling SC-MCCH is indicated by sc-mcch-Subframe.

[0062] SC-MCCH is scheduled through the Physical Downlink Control Channel (PDCCH). On the one hand, a new Radio Network Temporary Identity (RNTI), namely the Single Cell RNTI (SC-RNTI), is introduced to identify the PDCCH (such as SC-MCCHPDCCH) used to schedule SC-MCCH. Optionally, the SC-RNTI is fixed to FFFC. On the other hand, a new RNTI, namely the Single Cell Notification RNTI (SC-N-RNTI), is introduced to identify the PDCCH (such as the Notification PDCCH) used to indicate the change notification of SC-MCCH. Optionally, the SC-N-RNTI is fixed to FFFB. Further, one of the 8 bits of DCI1C can be used to indicate the change notification. In LTE, the configuration information of SC-PTM is based on the SC-MCCH configured by SIB20, and then the SC-MCCH configures the SC-MTCH, which is used to transmit service data.

[0063] Specifically, SC-MCCH only transmits one message (i.e., SCPTMConfiguration), which is used to configure the configuration information of SC-PTM. The configuration information of SC-PTM includes: Temporary Mobile Group Identity (TMGI), session ID, Group RNTI (G-RNTI), Discontinuous Reception (DRX) configuration information, and SC-PTM service information of neighboring cells. It should be noted that SC-PTM in R13 does not support the Robust Header Compression (ROHC) function.

[0064] The downlink discontinuous reception of SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-SchedulingCycle, and SC-MTCH-SchedulingOffset.

[0065] When [(SFN*10)+subframe number]modulo(SC-MTCH-SchedulingCycle)=SC-MTCH-SchedulingOffset is satisfied, the timer onDurationTimerSCPTM is started;

[0066] When receiving downlink PDCCH scheduling, start the timer drx-InactivityTimerSCPTM;

[0067] Downlink SC-PTM services are received only when the timer onDurationTimerSCPTM or drx-InactivityTimerSCPTM is running.

[0068] SC-PTM service continuity uses the MBMS service continuity concept based on SIB15, namely the "SIB15 + MBMS Interest Indication" approach. Service continuity for idle terminal devices is based on the concept of frequency priority.

[0069] In NR systems, many scenarios require support for multicast and broadcast services, such as the Internet of Vehicles and the Industrial Internet. Therefore, the introduction of MBMS in NR is essential. As described above, SC-PTM configuration involves configuring the SC-MCCH based on SIB20, then configuring the SC-MTCH based on the SC-MCCH to transmit service data on the SC-MTCH. Each cell has only one SC-MCCH.

[0070] It should be noted that the MBMS services in the above solution include but are not limited to multicast services, groupcast services, MBS services, etc. The embodiment of the present application takes the MBS service as an example for explanation, and the description of "MBS service" can also be replaced by "multicast service" or "groupcast service" or "broadcast service" or "MBMS service".

[0071] In the NR system, broadcast-type MBS services are supported. Terminal devices can receive broadcast MBS services in RRC idle state, RRC inactive state, or RRC connected state.

[0072] For a terminal device in an RRC connected state, if a cell switch occurs while receiving an MBS service, the terminal device needs to re-read the system broadcast message or Multicast Control Channel (MCCH) signaling in the target cell to obtain the configuration information of the MBS service in order to continue receiving the MBS service. This increases the interruption delay of the MBS service to a certain extent. To this end, the following technical solutions of the embodiments of the present application are proposed. The technical solutions of the embodiments of the present application propose a configuration method for MBS services, which can reduce the interruption delay of the MBS service caused by the switch when a cell switch occurs when a terminal device in an RRC connected state receives a broadcast MBS service.

[0073] In the technical solution of the embodiment of the present application, a new SIB (called the first SIB) is defined. The first SIB includes the configuration information of the first MCCH. Here, the first MCCH is the control channel of the MBS service. In other words, the first SIB is used to configure the configuration information of the control channel of NRMBS. Optionally, the control channel of NR MBS can also be called NR MCCH (that is, the first MCCH).

[0074] Furthermore, the first MCCH is used to carry the first signaling. The embodiment of the present application does not limit the name of the first signaling. For example, the first signaling is signaling A. The first signaling includes configuration information of at least one first MTCH. Here, the first MTCH is a service channel (also called a data channel or a transmission channel) of the MBS service. The first MTCH is used to transmit MBS service data (such as NRMBS service data). In other words, the first MCCH is used to configure the configuration information of the service channel of the NR MBS. Optionally, the service channel of the NRMBS may also be called the NR MTCH (i.e., the first MTCH).

[0075] Specifically, the first signaling is used to configure a service channel for the NR MBS, service information corresponding to the service channel, and scheduling information corresponding to the service channel. Furthermore, optionally, the service information corresponding to the service channel includes identification information for the service, such as a TMGI or session ID. The scheduling information corresponding to the service channel includes the RNTI used when scheduling MBS service data corresponding to the service channel, such as a G-RNTI or DRX configuration information.

[0076] It should be noted that the transmission of the first MCCH and the first MTCH are both based on PDCCH scheduling. The RNTI used by the PDCCH for scheduling the first MCCH uses a network-wide unique identifier, that is, a fixed value. The RNTI used by the PDCCH for scheduling the first MTCH is configured through the first MCCH.

[0077] It should be noted that the embodiments of the present application do not limit the naming of the first SIB, the first MCCH, and the first MTCH. For ease of description, the first SIB may also be referred to as SIB, the first MCCH may also be referred to as MCCH, and the first MTCH may also be referred to as MTCH. The PDCCH for scheduling MCCH (i.e., MCCHPDCCH) and the notification PDCCH are configured through the SIB, wherein the DCI carried by the MCCH PDCCH is used to schedule the PDSCH for transmitting MCCH (i.e., MCCH PDSCH). Furthermore, M PDCCHs for scheduling MTCHs (i.e., MTCH 1PDCCH, MTCH2PDCCH, ..., MTCH M PDCCH) are configured through the MCCH, wherein the DCI carried by the MTCH n PDCCH is used to schedule the PDSCH for transmitting MTCH n (i.e., MTCH n PDSCH), and n is an integer greater than or equal to 1 and less than or equal to M. MCCH and MTCH are mapped to DL-SCH, and further, DL-SCH is mapped to PDSCH, wherein MCCH and MTCH belong to logical channels, DL-SCH belongs to a transport channel, and PDSCH belongs to a physical channel.

[0078] Figure 2 This is a flow chart of a method for configuring MBS services provided in an embodiment of the present application. Figure 2 As shown, the MBS service configuration method includes the following steps:

[0079] Step 201: The terminal device sends information about a first MBS service to a second cell, where the first MBS service is an MBS service that the terminal device expects or is currently receiving.

[0080] In the embodiment of the present application, the first cell is the target cell for switching, and the second cell is the original cell for switching.

[0081] It should be noted that, in the embodiments of the present application, the description of "first cell" can be replaced by "first base station", and the description of "second cell" can be replaced by "second base station". The first base station is the target base station for handover, and the second base station is the original base station for handover.

[0082] In the embodiment of the present application, before switching, the terminal device sends information about the first MBS service to the second cell. Here, the first MBS service is the MBS service desired by the terminal device or the MBS service being received. It should be noted that the MBS service desired by the terminal device can also be referred to as the MBS service of interest to the terminal device.

[0083] In an optional manner, the terminal device may send information about the first MBS service to the second cell during the initial access process to the second cell or after accessing the second cell and entering the RRC connected state. Here, the first MBS service may be an MBS service that the terminal device expects in a previous RRC inactive state or idle state, and may also be referred to as an MBS service of interest to the terminal device. Alternatively, the first MBS service may also be an MBS service that the terminal device expects in the RRC connected state, and may also be referred to as an MBS service of interest to the terminal device.

[0084] In an embodiment of the present application, the terminal device sends the information of the first MBS service to the second cell, which can be achieved in the following manner: the terminal device sends RRC signaling to the second cell, and the RRC signaling carries the information of the first MBS service.

[0085] In an optional manner, the RRC signaling may be new RRC signaling. Here, new RRC signaling refers to RRC signaling that is different from existing RRC signaling. The terminal device sends information about the first MBS service via the new RRC signaling. In this case, the information about the first MBS service is carried in the new RRC signaling.

[0086] In another optional manner, the RRC signaling may be an existing RRC signaling. The terminal device sends the information of the first MBS service through the existing RRC signaling. In this case, the information of the first MBS service is carried in the existing RRC signaling.

[0087] In one example, the RRC signaling is one of the following: UE assistance information (UEAssistanceInformation) message; security activation complete (SecurityModeComplete) message; RRC establishment complete (RRCSetupComplete) message; RRC recovery complete (RRCResumeComplete) message; RRC reconstruction complete (RRCReestablishmentComplete) message; RRC reconfiguration complete (RRCReconfigurationComplete) message.

[0088] In this embodiment of the present application, the information of the first MBS service includes at least one of the following:

[0089] identification information of the first MBS service;

[0090] Frequency information of the first MBS service;

[0091] Band Width Part (BWP) information of the first MBS service;

[0092] Sub-Carrier Space (SCS) information of the first MBS service;

[0093] Priority information of the first MBS service.

[0094] In an example, the identification information of the first MBS service includes at least one of the following: TMGI, session identifier, and G-RNTI.

[0095] In an example, the frequency information of the first MBS service is, for example, the ARFCN value (ARFCN-Value) of the NR. Here, ARFCN stands for Absolute Radio Frequency Channel Number.

[0096] In one example, the BWP information of the first MBS service includes at least one of the following: BWP configuration information, and indication information, where the indication information is used to indicate whether the bandwidth of the first MBS service is the bandwidth of CSS#0 or the bandwidth of the initial BWP (initial BWP) configured in SIB1, where CSS stands for Common Search Space and CSS#0 represents the common search space for initial access.

[0097] In an example, the priority information of the first MBS service is used to determine whether the priority of the first MBS service is higher than (or lower than) the priority of the service transmitted in multicast mode and / or the service transmitted in unicast mode.

[0098] Step 202: The first cell receives information about the first MBS service sent by the second cell.

[0099] In this embodiment of the present application, when the network determines that a cell handover has occurred with a terminal device, the original cell (i.e., the second cell) forwards the information of the first MBS service reported by the terminal device to the target cell (i.e., the first cell). In other words, the information of the first MBS service is forwarded by the second cell to the first cell, and the first cell receives the information of the first MBS service sent by the second cell.

[0100] The embodiment of the present application does not limit the specific implementation process of cell switching. In an optional manner, the process of cell switching includes: 1. Measurement and reporting stage; 2. Switching preparation stage; 3. Switching execution stage; 4. Switching completion stage. In specific implementation, the terminal device performs measurements and reports the measurement results to the current serving cell (i.e., the second cell). The second cell determines that the switching conditions are met based on the measurement results and selects a target cell (i.e., the first cell) for the terminal device; the second cell sends a switching command to the terminal device, and the terminal device switches to the first cell, thereby completing the switching.

[0101] In an embodiment of the present application, the first cell receives the information of the first MBS service sent by the second cell, which can be implemented at any stage of the handover process. In an optional manner, the first cell receives a handover preparation information (HandoverPreparationInformation) message sent by the second cell, and the handover preparation information message carries the information of the first MBS service. Furthermore, the handover preparation information message includes an access layer context (AS-Context), and the AS-Context includes the information of the first MBS service. The following Table 1 shows the information of the first MBS service carried in the AS-Context in the HandoverPreparationInformation message, where the information of the first MBS service is the MBSIndication in Table 1.

[0102]

[0103]

[0104] Table 1

[0105] Step 203: The first cell determines MBS service configuration information according to the information of the first MBS service, and sends the MBS service configuration information to the terminal device through a handover command.

[0106] In the embodiment of the present application, on the terminal device side, the terminal device receives a handover command sent by the first cell, where the handover command carries MBS service configuration information, and the MBS service configuration information is determined based on information of the first MBS service.

[0107] In the embodiment of the present application, the first cell sends the MBS service configuration information to the terminal device via a handover command. In an optional manner, the handover command carries an RRC reconfiguration message, and the RRC reconfiguration message includes the MBS service configuration information.

[0108] In the embodiment of the present application, the MBS service configuration information has the following two implementation methods:

[0109] Mode 1: The MBS service configuration information includes configuration information of all MBS services broadcast by the first cell; or

[0110] Mode 2: the MBS service configuration information includes configuration information of the first MBS service broadcast by the first cell.

[0111] In an example, the MBS services broadcast by the first cell include a first MBS service, a second MBS service, and a third MBS service. The MBS service configuration information includes configuration information of the first MBS service, configuration information of the second MBS service, and configuration information of the third MBS service.

[0112] In an example, the MBS services broadcast by the first cell include a first MBS service, a second MBS service, and a third MBS service. The MBS service configuration information includes configuration information of the first MBS service indicated by the terminal device.

[0113] In the above solution, the configuration information of each MBS service in the configuration information of all MBS services includes information in the Broadcast Control Channel (BCCH) signaling and / or information in the Multicast Control Channel MCCH signaling associated with the MBS service.

[0114] In the above solution, the configuration information of the first MBS service includes information in BCCH signaling and / or information in MCCH signaling associated with the first MBS service.

[0115] In an optional embodiment, the information in the BCCH signaling includes configuration information for receiving MCCH signaling. Specifically, the configuration information for receiving MCCH signaling includes at least one of the following: MCCH modification period, MCCH repetition period, time domain resource information for transmitting MCCH (e.g., configuration information such as radio frame, subframe, time slot, and symbol transmitted by MCCH), scheduling RNTI, modification notification RNTI, subcarrier spacing, transmission bandwidth, and BWP indication information.

[0116] It should be noted that the scheduling RNTI here refers to the RNTI used to scramble the MSB PDCCH (such as MCCH PDCCH, MTCH PDCCH). The modification notification RNTI refers to the RNTI used to scramble the notification PDCCH.

[0117] In an optional manner, the information in the MCCH signaling includes configuration information of the MBS service. Specifically, the configuration information of the MBS service includes at least one of the following: TMGI of the MBS service, session identifier of the MBS service, G-RNTI of the MBS service, DRX configuration information, subcarrier spacing, transmission bandwidth, BWP indication information, and MBS service information of neighboring cells.

[0118] In the technical solution of an embodiment of the present application, a terminal device sends information about a first MBS service to a second cell (i.e., the original cell being handed over). Here, the first MBS service is the MBS service desired by the terminal device or the MBS service currently being received. The second cell forwards the information about the first MBS service to the first cell (i.e., the target cell being handed over). The first cell determines MBS service configuration information based on the information about the first MBS service and sends the MBS service configuration information to the terminal device via a handover command. During the handover process, the terminal device can directly obtain the MBS service configuration information from the handover command, without having to wait for the first cell to obtain the MBS service configuration information from the system broadcast message or MCCH signaling of the first cell after handover, thereby reducing the interruption delay of the MBS service during the handover process.

[0119] Figure 3 This is a schematic diagram of the structure of the MBS service configuration device provided in the embodiment of the present application. Figure 1 , applied to the network device corresponding to the first cell (such as the first base station corresponding to the first cell), such as Figure 3 As shown, the MBS service configuration device includes:

[0120] The receiving unit 301 is configured to receive information about a first MBS service sent by a second cell, where the first MBS service is an MBS service desired by a terminal device or an MBS service being received;

[0121] A determining unit 302 is configured to determine MBS service configuration information according to the information of the first MBS service;

[0122] The sending unit 303 is configured to send the MBS service configuration information to the terminal device via a switching command.

[0123] In an optional manner, the information of the first MBS service includes at least one of the following:

[0124] identification information of the first MBS service;

[0125] Frequency information of the first MBS service;

[0126] BWP information of the first MBS business;

[0127] subcarrier spacing information of the first MBS service;

[0128] Priority information of the first MBS service.

[0129] In an optional manner, the receiving unit 301 is configured to receive a handover preparation information message sent by the second cell, where the handover preparation information message carries information about the first MBS service.

[0130] In an optional manner, the handover preparation information message includes an AS-Context, and the AS-Context includes information about the first MBS service.

[0131] In an optional manner, the handover command carries an RRC reconfiguration message, and the RRC reconfiguration message includes the MBS service configuration information.

[0132] In an optional manner, the MBS service configuration information includes configuration information of all MBS services broadcast by the first cell; or,

[0133] The MBS service configuration information includes configuration information of the first MBS service broadcast by the first cell.

[0134] In an optional manner, the configuration information of each MBS service in the configuration information of all MBS services includes information in BCCH signaling and / or information in MCCH signaling associated with the MBS service.

[0135] In an optional manner, the configuration information of the first MBS service includes information in BCCH signaling and / or information in MCCH signaling associated with the first MBS service.

[0136] In an optional manner, the information in the BCCH signaling includes configuration information for receiving MCCH signaling.

[0137] In an optional manner, the configuration information for receiving MCCH signaling includes at least one of the following:

[0138] MCCH modification period, MCCH repetition period, time domain resource information for transmitting MCCH, scheduling RNTI, modification notification RNTI, subcarrier spacing, transmission bandwidth, and BWP indication information.

[0139] In an optional manner, the information in the MCCH signaling includes configuration information of the MBS service.

[0140] In an optional manner, the configuration information of the MBS service includes at least one of the following:

[0141] MBS service TMGI, MBS service session identifier, MBS service G-RNTI, DRX configuration information, subcarrier spacing, transmission bandwidth, BWP indication information, and MBS service information of neighboring cells.

[0142] Those skilled in the art should understand that the description related to the above-mentioned MBS service configuration device in the embodiment of the present application can be understood with reference to the description related to the MBS service configuration method in the embodiment of the present application.

[0143] Figure 4 This is a schematic diagram of the structure of the MBS service configuration device provided in the embodiment of the present application. Figure 2 , applied to terminal equipment, such as Figure 4 As shown, the MBS service configuration device includes:

[0144] The sending unit 401 is configured to send information about a first MBS service to a second cell, where the first MBS service is an MBS service desired by a terminal device or an MBS service being received; the information about the first MBS service is forwarded by the second cell to the first cell;

[0145] The receiving unit 402 is configured to receive a handover command sent by the first cell, where the handover command carries MBS service configuration information, and the MBS service configuration information is determined based on information of the first MBS service.

[0146] In an optional manner, the information of the first MBS service includes at least one of the following:

[0147] identification information of the first MBS service;

[0148] Frequency information of the first MBS service;

[0149] BWP information of the first MBS business;

[0150] subcarrier spacing information of the first MBS service;

[0151] Priority information of the first MBS service.

[0152] In an optional manner, the sending unit 401 is configured to send RRC signaling to the second cell, where the RRC signaling carries information about the first MBS service.

[0153] In an optional manner, the RRC signaling is one of the following:

[0154] UE assistance information message;

[0155] Security activation completion message;

[0156] RRC setup complete message;

[0157] RRC recovery complete message;

[0158] RRC re-establishment completion message;

[0159] RRC reconfiguration complete message.

[0160] In an optional manner, the handover command carries an RRC reconfiguration message, and the RRC reconfiguration message includes the MBS service configuration information.

[0161] In an optional manner, the MBS service configuration information includes configuration information of all MBS services broadcast by the first cell; or,

[0162] The MBS service configuration information includes configuration information of the first MBS service broadcast by the first cell.

[0163] In an optional manner, the configuration information of each MBS service in the configuration information of all MBS services includes information in BCCH signaling and / or information in MCCH signaling associated with the MBS service.

[0164] In an optional manner, the configuration information of the first MBS service includes information in BCCH signaling and / or information in MCCH signaling associated with the first MBS service.

[0165] In an optional manner, the information in the BCCH signaling includes configuration information for receiving MCCH signaling.

[0166] In an optional manner, the configuration information for receiving MCCH signaling includes at least one of the following:

[0167] MCCH modification period, MCCH repetition period, time domain resource information for transmitting MCCH, scheduling RNTI, modification notification RNTI, subcarrier spacing, transmission bandwidth, and BWP indication information.

[0168] In an optional manner, the information in the MCCH signaling includes configuration information of the MBS service.

[0169] In an optional manner, the configuration information of the MBS service includes at least one of the following:

[0170] MBS service TMGI, MBS service session identifier, MBS service G-RNTI, DRX configuration information, subcarrier spacing, transmission bandwidth, BWP indication information, and MBS service information of neighboring cells.

[0171] Those skilled in the art should understand that the description related to the above-mentioned MBS service configuration device in the embodiment of the present application can be understood with reference to the description related to the MBS service configuration method in the embodiment of the present application.

[0172] Figure 5 This is a schematic structural diagram of a communication device 500 provided in an embodiment of the present application. The communication device can be a terminal device or a network device. Figure 5 The communication device 500 shown includes a processor 510, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0173] Alternatively, as Figure 5 As shown, the communication device 500 may further include a memory 520. The processor 510 may call and execute a computer program from the memory 520 to implement the method in the embodiment of the present application.

[0174] The memory 520 may be a separate device independent of the processor 510 , or may be integrated into the processor 510 .

[0175] Alternatively, as Figure 5 As shown, the communication device 500 may further include a transceiver 530 , and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0176] The transceiver 530 may include a transmitter and a receiver. The transceiver 530 may further include an antenna, and the number of antennas may be one or more.

[0177] Optionally, the communication device 500 may specifically be a network device in an embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0178] Optionally, the communication device 500 may specifically be a mobile terminal / terminal device in an embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0179] Figure 6 It is a schematic structural diagram of the chip of an embodiment of the present application. Figure 6 The chip 600 shown includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0180] Alternatively, as Figure 6 As shown, the chip 600 may further include a memory 620. The processor 610 may call and execute a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0181] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0182] Optionally, the chip 600 may further include an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0183] Optionally, the chip 600 may further include an output interface 640. The processor 610 may control the output interface 640 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0184] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0185] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0186] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0187] Figure 7 700 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. Figure 7 As shown, the communication system 700 includes a terminal device 710 and a network device 720 .

[0188] Among them, the terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 720 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0189] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented as a hardware decoding processor, or can be implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0190] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0191] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0192] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0193] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0194] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0195] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0196] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0197] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0198] The embodiment of the present application also provides a computer program.

[0199] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not described here.

[0200] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0201] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0202] 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.

[0203] 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 through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0204] 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.

[0205] In addition, 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.

[0206] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several 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.

[0207] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for configuring a multicast broadcast service (MBS) service, the method comprising: When it is determined that the terminal device is in a connected state and a cell handover occurs when receiving an MBS service, the first cell receives information about a first MBS service sent by the second cell, where the first MBS service is the MBS service being received by the terminal device; The first cell is a target cell for handover, and the second cell is an original cell for handover; The first cell determines MBS service configuration information based on the information of the first MBS service, and sends the MBS service configuration information to the terminal device through a handover command; wherein the handover command carries a radio resource control (RRC) reconfiguration message, and the RRC reconfiguration message includes the MBS service configuration information; The first cell receiving information about the first MBS service sent by the second cell includes: The first cell receives a handover preparation information message sent by the second cell, where the handover preparation information message carries information about the first MBS service; in, The MBS service configuration information includes configuration information of all MBS services broadcast by the first cell; the configuration information of each MBS service in the configuration information of all MBS services includes information in broadcast control channel BCCH signaling and / or multicast control channel MCCH signaling associated with the MBS service.

2. The method according to claim 1, wherein The information of the first MBS service includes at least one of the following: identification information of the first MBS service; Frequency information of the first MBS service; Bandwidth part BWP information of the first MBS service; Subcarrier spacing SCS information of the first MBS service; Priority information of the first MBS service.

3. The method according to claim 1, wherein The handover preparation information message includes an access layer context AS-Context, and the AS-Context includes information about the first MBS service.

4. The method according to any one of claims 1 to 3, wherein The MBS service configuration information further includes configuration information of the first MBS service broadcast by the first cell.

5. The method according to claim 4, wherein The configuration information of the first MBS service includes information in BCCH signaling and / or information in MCCH signaling associated with the first MBS service.

6. The method according to claim 1 or 5, wherein: The information in the BCCH signaling includes configuration information for receiving MCCH signaling.

7. The method according to claim 6, wherein: The configuration information for receiving MCCH signaling includes at least one of the following: MCCH modification period, MCCH repetition period, time domain resource information for transmitting MCCH, scheduling radio network temporary identifier RNTI, modification notification RNTI, subcarrier spacing, transmission bandwidth, and BWP indication information.

8. The method according to claim 1 or 5, wherein: The information in the MCCH signaling includes configuration information of the MBS service.

9. The method according to claim 8, wherein The configuration information of the MBS service includes at least one of the following: Temporary mobile group identity TMGI of MBS service, session identity of MBS service, group radio network temporary identity G-RNTI of MBS service, discontinuous reception DRX configuration information, subcarrier spacing, transmission bandwidth, BWP indication information, and MBS service information of neighboring cells.

10. A method for configuring an MBS service, the method comprising: When a cell handover occurs while a terminal device is in a connected state and receiving an MBS service, the terminal device sends information about a first MBS service to a second cell, where the first MBS service is the MBS service being received by the terminal device. The information about the first MBS service is sent by the second cell to the first cell via a handover preparation information message, where the handover preparation information message carries the information about the first MBS service. The terminal device receives a handover command sent by the first cell, the handover command carrying MBS service configuration information, the MBS service configuration information being determined based on information about the first MBS service; the handover command carrying an RRC reconfiguration message, the RRC reconfiguration message including the MBS service configuration information; the first cell being a target cell for handover, and the second cell being a source cell for handover; in, The MBS service configuration information includes configuration information of all MBS services broadcast by the first cell; the configuration information of each MBS service in the configuration information of all MBS services includes information in broadcast control channel BCCH signaling and / or multicast control channel MCCH signaling associated with the MBS service.

11. The method according to claim 10, wherein: The information of the first MBS service includes at least one of the following: identification information of the first MBS service; Frequency information of the first MBS service; BWP information of the first MBS business; subcarrier spacing information of the first MBS service; Priority information of the first MBS service.

12. The method according to claim 10, wherein: The terminal device sending information of the first MBS service to the second cell includes: The terminal device sends RRC signaling to the second cell, where the RRC signaling carries information about the first MBS service.

13. The method according to claim 12, wherein: The RRC signaling is one of the following: UE assistance information UEAssistanceInformation message; Security activation completion message; RRC setup complete message; RRC recovery complete message; RRC re-establishment completion message; RRC reconfiguration complete message.

14. The method according to any one of claims 10 to 13, wherein The MBS service configuration information further includes configuration information of the first MBS service broadcast by the first cell.

15. The method according to claim 14, wherein The configuration information of the first MBS service includes information in BCCH signaling and / or information in MCCH signaling associated with the first MBS service.

16. The method according to claim 10 or 15, wherein: The information in the BCCH signaling includes configuration information for receiving MCCH signaling.

17. The method according to claim 16, wherein The configuration information for receiving MCCH signaling includes at least one of the following: MCCH modification period, MCCH repetition period, time domain resource information for transmitting MCCH, scheduling RNTI, modification notification RNTI, subcarrier spacing, transmission bandwidth, and BWP indication information.

18. The method according to claim 10 or 15, wherein The information in the MCCH signaling includes configuration information of the MBS service.

19. The method according to claim 18, wherein The configuration information of the MBS service includes at least one of the following: MBS service TMGI, MBS service session identifier, MBS service G-RNTI, DRX configuration information, subcarrier spacing, transmission bandwidth, BWP indication information, and MBS service information of neighboring cells.

20. A device for configuring an MBS service, applied to a network device corresponding to a first cell, the device comprising: a receiving unit, configured to, when determining that a cell handover occurs when the terminal device is in a connected state and receiving an MBS service, receive a handover preparation information message sent by a second cell, wherein the handover preparation information message carries information about a first MBS service, where the first MBS service is an MBS service being received by the terminal device; The first cell is a target cell for handover, and the second cell is an original cell for handover; a determining unit, configured to determine MBS service configuration information according to the information of the first MBS service; a sending unit, configured to send the MBS service configuration information to the terminal device through a handover command; wherein the handover command carries an RRC reconfiguration message, and the RRC reconfiguration message includes the MBS service configuration information; in, The MBS service configuration information includes configuration information of all MBS services broadcast by the first cell; the configuration information of each MBS service in the configuration information of all MBS services includes information in broadcast control channel BCCH signaling and / or multicast control channel MCCH signaling associated with the MBS service.

21. The device according to claim 20, wherein The information of the first MBS service includes at least one of the following: identification information of the first MBS service; Frequency information of the first MBS service; BWP information of the first MBS business; subcarrier spacing information of the first MBS service; Priority information of the first MBS service.

22. The device according to claim 20, wherein The handover preparation information message includes an AS-Context, and the AS-Context includes information about the first MBS service.

23. The device according to any one of claims 20 to 22, wherein The MBS service configuration information further includes configuration information of the first MBS service broadcast by the first cell.

24. The device according to claim 23, wherein The configuration information of the first MBS service includes information in BCCH signaling and / or information in MCCH signaling associated with the first MBS service.

25. The device according to claim 20 or 24, wherein The information in the BCCH signaling includes configuration information for receiving MCCH signaling.

26. The device according to claim 25, wherein The configuration information for receiving MCCH signaling includes at least one of the following: MCCH modification period, MCCH repetition period, time domain resource information for transmitting MCCH, scheduling RNTI, modification notification RNTI, subcarrier spacing, transmission bandwidth, and BWP indication information.

27. The device according to claim 20 or 24, wherein The information in the MCCH signaling includes configuration information of the MBS service.

28. The apparatus according to claim 27, wherein The configuration information of the MBS service includes at least one of the following: MBS service TMGI, MBS service session identifier, MBS service G-RNTI, DRX configuration information, subcarrier spacing, transmission bandwidth, BWP indication information, and MBS service information of neighboring cells.

29. A device for configuring MBS services, applied to a terminal device, the device comprising: a sending unit, configured to send information of a first MBS service to a second cell when a cell handover occurs while the terminal device is in a connected state and receiving an MBS service, where the first MBS service is the MBS service being received by the terminal device; The information of the first MBS service is sent by the second cell to the first cell through a handover preparation information message, where the handover preparation information message carries the information of the first MBS service; The first cell is a target cell for handover, and the second cell is an original cell for handover; a receiving unit, configured to receive a handover command sent by the first cell, the handover command carrying MBS service configuration information, the MBS service configuration information being determined based on information of the first MBS service; the handover command carrying an RRC reconfiguration message, the RRC reconfiguration message including the MBS service configuration information; in, The MBS service configuration information includes configuration information of all MBS services broadcast by the first cell; the configuration information of each MBS service in the configuration information of all MBS services includes information in broadcast control channel BCCH signaling and / or multicast control channel MCCH signaling associated with the MBS service.

30. The apparatus according to claim 29, wherein The information of the first MBS service includes at least one of the following: identification information of the first MBS service; Frequency information of the first MBS service; BWP information of the first MBS business; subcarrier spacing information of the first MBS service; Priority information of the first MBS service.

31. The apparatus according to claim 29, wherein The sending unit is configured to send RRC signaling to the second cell, where the RRC signaling carries information about the first MBS service.

32. The apparatus according to claim 31, wherein The RRC signaling is one of the following: UE assistance information message; Security activation completion message; RRC setup complete message; RRC recovery complete message; RRC re-establishment completion message; RRC reconfiguration complete message.

33. The device according to any one of claims 29 to 32, wherein The MBS service configuration information includes configuration information of the first MBS service broadcast by the first cell.

34. The apparatus according to claim 33, wherein The configuration information of the first MBS service includes information in BCCH signaling and / or information in MCCH signaling associated with the first MBS service.

35. The apparatus according to claim 29 or 34, wherein The information in the BCCH signaling includes configuration information for receiving MCCH signaling.

36. The apparatus of claim 35, wherein: The configuration information for receiving MCCH signaling includes at least one of the following: MCCH modification period, MCCH repetition period, time domain resource information for transmitting MCCH, scheduling RNTI, modification notification RNTI, subcarrier spacing, transmission bandwidth, and BWP indication information.

37. The apparatus according to claim 29 or 34, wherein The information in the MCCH signaling includes configuration information of the MBS service.

38. The apparatus according to claim 37, wherein The configuration information of the MBS service includes at least one of the following: MBS service TMGI, MBS service session identifier, MBS service G-RNTI, DRX configuration information, subcarrier spacing, transmission bandwidth, BWP indication information, and MBS service information of neighboring cells.

39. A network device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 9.

40. A terminal device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 10 to 19.

41. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 9.

42. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 10 to 19.

43. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 9.

44. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 10 to 19.

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