A method and apparatus for MBS configuration change, a terminal device, and a network device

Abstract

Embodiments of the present application provide a method and device for MBS configuration change, a terminal device and a network device. The method comprises: a terminal device receiving a first downlink control information (DCI); wherein first indication information carried in the first DCI and / or scrambling information of the first DCI is used to indicate that configuration information of at least one MBS service has changed.

Description

Technical Field

[0001] This application relates to the field of mobile communication technology, specifically to a method and apparatus for changing the configuration of Multicast Broadcast Service (MBS), a terminal device, and a network device. Background Technology

[0002] Each cell has one and only one Multicast Control Channel (MCCH). The MCCH carries signaling (hereinafter referred to as MCCH signaling) and configures the configuration information of multiple MBS services through the MCCH signaling. If the configuration information of any of the multiple MBS services changes, the MCCH signaling will also change. In this case, the network side will notify all users in the cell to update the MCCH signaling. However, some users do not need to update the configuration information of their MBS services, which affects these users and is detrimental to their energy-saving goals. Summary of the Invention

[0003] This application provides a method and apparatus for changing MBS configuration, as well as a terminal device and a network device.

[0004] The MBS configuration change method provided in this application embodiment includes:

[0005] The terminal device receives first downlink control information (DCI); wherein, the first indication information and / or the scrambling information carried in the first DCI are used to indicate that the configuration information of at least one MBS service has changed.

[0006] The MBS configuration change method provided in this application embodiment includes:

[0007] The network device sends a first DCI; wherein the first indication information carried in the first DCI and / or the scrambling information of the first DCI are used to indicate that the configuration information of at least one MBS service has changed.

[0008] The MBS configuration change apparatus provided in this application embodiment is applied to a terminal device, and the apparatus includes:

[0009] A receiving unit is configured to receive a first DCI; wherein the first indication information carried in the first DCI and / or the scrambling information of the first DCI are used to indicate that the configuration information of at least one MBS service has changed.

[0010] The MBS configuration change apparatus provided in this application embodiment is applied to a network device, and the apparatus includes:

[0011] A transmitting unit is configured to transmit a first DCI; wherein the first indication information carried in the first DCI and / or the scrambling information of the first DCI are used to indicate that the configuration information of at least one MBS service has changed.

[0012] The terminal device provided in this application includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to perform the MBS configuration change method described above.

[0013] The network device provided in this application includes a processor and a memory. The memory stores computer programs, and the processor calls and runs the computer programs stored in the memory to perform the MBS configuration change method described above.

[0014] The chip provided in this application embodiment is used to implement the above-described method for changing MBS configuration.

[0015] Specifically, the chip includes a processor for retrieving and running a computer program from memory, causing a device equipped with the chip to perform the aforementioned MBS configuration change method.

[0016] The computer-readable storage medium provided in this application embodiment is used to store a computer program that causes a computer to perform the above-described MBS configuration change method.

[0017] The computer program product provided in this application includes computer program instructions that cause a computer to perform the above-described method for changing MBS configuration.

[0018] The computer program provided in this application embodiment, when run on a computer, causes the computer to perform the above-described method for MBS configuration changes.

[0019] Through the above technical solution, the terminal device determines that the configuration information of at least one MBS service has changed by using the first indication information and / or the scrambling information of the first DCI carried in the first DCI. This allows the terminal device to directly determine whether to update the configuration information of the MBS service related to the terminal device, enabling the terminal device to effectively obtain the MBS service configuration information. Simultaneously, for terminal devices that do not need to update the MBS service configuration information, energy saving can be achieved. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a schematic diagram of a communication system architecture provided in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the first SIB-related configuration provided in the embodiments of this application;

[0023] Figure 3 This is a schematic diagram of the PTM configuration transmission mechanism provided in the embodiments of this application;

[0024] Figure 4 This is a flowchart illustrating the MBS configuration change method provided in an embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the structure of the MBS configuration change device provided in the embodiments of this application. Figure 1 ;

[0026] Figure 6 This is a schematic diagram of the structure of the MBS configuration change device provided in the embodiments of this application. Figure 2 ;

[0027] Figure 7 This is a schematic structural diagram of a communication device provided in an embodiment of this application;

[0028] Figure 8 This is a schematic structural diagram of the chip according to an embodiment of this application;

[0029] Figure 9 This is a schematic block diagram of a communication system provided in an embodiment of this application. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] The technical solutions of this application can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, 5G communication systems, or future communication systems.

[0032] For example, the communication system 100 used in the embodiments of this 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 a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographical area and can communicate with terminals located within that coverage area. Optionally, the network device 110 may be an evolved Node B (eNB or eNodeB) in an LTE system, or a radio controller in a Cloud Radio Access Network (CRAN), or the network device may be a mobile switching center, relay station, access point, vehicle-mounted equipment, wearable device, hub, switch, bridge, router, network-side equipment in a 5G network, or network equipment in a future communication system, etc.

[0033] The communication system 100 also includes at least one terminal 120 located within the coverage area of ​​network device 110. As used herein, "terminal" includes, but is not limited to, devices configured to receive / transmit communication signals via wired connections, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection; and / or another data connection / network; and / or via a wireless interface, such as for cellular networks, Wireless Local Area Networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM-FM broadcast transmitters; and / or another terminal. 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 phones; personal communications system (PCS) terminals that can combine cellular radiotelephony with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, notebooks, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or handheld receivers or other electronic devices that include radiotelephone transceivers. A terminal can refer to an access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user equipment. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in future PLMNs, etc.

[0034] Optionally, the terminals 120 can communicate directly with each other via Device to Device (D2D).

[0035] Alternatively, 5G communication systems or 5G networks may also be referred to as New Radio (NR) systems or NR networks.

[0036] Figure 1 An exemplary network device and two terminals are shown. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within its coverage area. This application embodiment does not limit this.

[0037] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.

[0038] It should be understood that devices with communication functions in the network / system of this application embodiment can be referred to as communication devices. 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, which will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities. This application embodiment does not limit this.

[0039] It should be understood that the terms "system" and "network" are often used interchangeably in this document. The term "and / or" in this document merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0040] To facilitate understanding of the technical solutions in the embodiments of this application, the technical solutions related to the embodiments of this application will be described below.

[0041] With people's pursuit of speed, latency, high-speed mobility, and energy efficiency, and the increasing diversity and complexity of business in future life, the third-generation partnership program (3GPP) is therefore being developed. rd The Generation Partnership Project (3GPP) international standards organization has begun developing 5G. The main application scenarios for 5G are: enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC).

[0042] On the one hand, eMBB still aims to provide users with multimedia content, services, and data, and its demand is growing rapidly. On the other hand, because eMBB may be deployed in different scenarios, such as indoors, urban areas, and rural areas, its capabilities and needs vary considerably. Therefore, generalizations cannot be made; a detailed analysis based on the specific deployment scenario is necessary. Typical applications of URLLC include industrial automation, power automation, remote medical operations (surgery), and traffic safety assurance. Typical characteristics of mMTC include high connection density, small data volume, latency-insensitive services, low module cost, and long service life.

[0043] In the early stages of NR deployment, complete NR coverage was difficult to achieve, so typical network coverage consisted of wide-area LTE coverage and isolated NR coverage. Furthermore, a large amount of LTE deployment was below 6 GHz, leaving very little spectrum available for 5G below 6 GHz. Therefore, NR had to explore spectrum applications above 6 GHz, but high-frequency band coverage was limited and signal fading was rapid. Simultaneously, to protect mobile operators' initial investments in LTE, a tight interworking mode between LTE and NR was proposed.

[0044] RRC status

[0045] To reduce air interface signaling and facilitate rapid restoration of wireless connections and data services, 5G defines a new Radio Resource Control (RRC) state: the RRC Inactive (RRC_INACTIVE) state. This state differs from the RRC Idle (RRC_IDLE) and RRC Active (RRC_ACTIVE) states.

[0046] 1) RRC_IDLE state (abbreviated as idle state): Mobility is based on UE-based 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.

[0047] 2) RRC_CONNECTED state (simply called connected state): An RRC connection exists, and UE contexts exist on both the base station and UE sides. The network side knows the UE's location at the cell level. Mobility is network-controlled. Unicast data can be transmitted between the UE and the base station.

[0048] 3) RRC_INACTIVE state (abbreviated as inactive state): Mobility is based on UE cell selection reselection, there is a connection between CN and NR, the UE context exists on a certain base station, paging is triggered by RAN, the paging area based on RAN is managed by RAN, and the network side knows the UE's location at the RAN paging area level.

[0049] Multimedia Broadcast Multicast Service (MBMS)

[0050] MBMS is a technology that transmits data from one data source to multiple terminal devices by sharing network resources. This technology can effectively utilize network resources while providing multimedia services, and achieve high-speed (e.g., 256kbps) broadcast and multicast of multimedia services.

[0051] Because MBMS has low spectral efficiency, it is insufficient to effectively carry and support the operation of mobile TV services. Therefore, in LTE, 3GPP explicitly proposed enhancing support for downlink high-speed MBMS services and defined the design requirements for the physical layer and air interface.

[0052] 3GPP Release 9 introduced evolved MBMS (eMBMS) into LTE. eMBMS introduced the concept of a Single Frequency Network (SFN), specifically a Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN). MBSFN uses a unified frequency to transmit service data simultaneously in all cells, while ensuring synchronization between cells. This approach can significantly improve the overall signal-to-noise ratio distribution of cells, and spectrum efficiency will also be greatly improved accordingly. eMBMS implements service broadcasting and multicasting based on the IP multicast protocol.

[0053] In LTE or enhanced LTE (LTE-Advanced, LTE-A), MBMS only has a broadcast bearer mode, not a multicast bearer mode. Furthermore, MBMS service reception is applicable to terminal devices in either idle or connected states.

[0054] The concept of Single Cell Point To Multiploint (SC-PTM) was introduced in 3GPP R13. SC-PTM is based on the MBMS network architecture.

[0055] 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), which is further 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) operation.

[0056] MBMS introduces a new System Information Block (SIB) type, namely SIB20. Specifically, SIB20 is used to transmit SC-MCCH configuration information, and there is only one SC-MCCH per cell. The SC-MCCH configuration information includes: the SC-MCCH modification period, the SC-MCCH repetition period, and the radio frames and subframes used to schedule the SC-MCCH. Further, 1) the boundary of the SC-MCCH modification period satisfies SFN mod m = 0, where SFN represents the system frame number of the boundary, and m is the SC-MCCH modification period (i.e., sc-mcch-ModificationPeriod) configured in SIB20. 2) the radio frames used to schedule the SC-MCCH satisfy: SFN mod mcch-RepetitionPeriod = mcch-Offset, where SFN represents the system frame number of the radio frame, mcch-RepetitionPeriod represents the SC-MCCH repetition period, and mcch-Offset represents the SC-MCCH offset. 3) Subframes for scheduling SC-MCCH are indicated by sc-mcch-Subframe.

[0057] SC-MCCH is scheduled via the Physical Downlink Control Channel (PDCCH). On one hand, a new Radio Network Temporary Identity (RNTI), namely the Single Cell RNTI (SC-RNTI), is introduced to identify the PDCCH used for scheduling SC-MCCH (e.g., SC-MCCHPDCCH). Optionally, the SC-RNTI is fixed at FFFC. On the other hand, a new RNTI, the Single Cell Notification RNTI (SC-N-RNTI), is introduced to identify the PDCCH used to indicate changes to SC-MCCH (e.g., notification PDCCH). Optionally, the SC-N-RNTI is fixed at FFFB. Furthermore, one bit from the eight bits of DCI 1C 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.

[0058] Specifically, the SC-MCCH transmits only one message (SCPTMConfiguration), which is used to configure the SC-PTM configuration information. The SC-PTM configuration information includes: Temporary Mobile Group Identity (TMGI), session ID, Group RNTI (G-RNTI), Discontinuous Reception (DRX) configuration information, and SC-PTM service information from neighboring cells. It should be noted that the SC-PTM in Release 13 does not support Robust Header Compression (ROHC).

[0059] Downlink discontinuous reception of SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-SchedulingCycle, and SC-MTCH-SchedulingOffset.

[0060] When [(SFN*10)+subframe number]modulo(SC-MTCH-SchedulingCycle)=SC-MTCH-SchedulingOffset is satisfied, start timer onDurationTimerSCPTM;

[0061] When a downlink PDCCH schedule is received, the timer drx-InactivityTimerSCPTM is started;

[0062] Downlink SC-PTM traffic is only received when the timer onDurationTimerSCPTM or drx-InactivityTimerSCPTM is running.

[0063] SC-PTM service continuity adopts the MBMS service continuity concept based on SIB15, namely the "SIB15+MBMSInterestIndication" method. Service continuity of idle terminal equipment is based on the concept of frequency priority.

[0064] As described above, the SC-PTM configuration is based on configuring the SC-MCCH using SIB20, and then configuring the SC-MTCH based on the SC-MCCH. Each cell has one and only one SC-MCCH. This means that after a terminal device performs cell reselection, it needs to reacquire the SC-MCCH, which will cause service interruption.

[0065] In New Radio (NR) systems, many scenarios require support for multicast and broadcast services, such as in connected vehicles and the Industrial Internet. Therefore, it is necessary to introduce MBMS in NR.

[0066] It should be noted that the MBMS service in the above scheme includes, but is not limited to, multicast service, MBS service, etc. This application uses MBS service as an example for illustration; the description of "MBS service" can also be replaced with "multicast service," "multicast service," "broadcast service," or "MBMS service."

[0067] NR supports broadcast-type MBS services, configuring the MCCH via the BCCH and the MTCH via the MCCT. The MCCH transmits MBS service configuration information, while the MTCH transmits MBS service data. Each cell has one and only one MCCH, which carries signaling (hereinafter referred to as MCCH signaling) to configure the configuration information of multiple MBS services. If the configuration information of any of the multiple MBS services changes, the MCCH signaling will also change. In this case, the network side will notify all users in the cell to update the MCCH signaling. However, some users do not need to update their MBS service configuration information, which affects these users and is detrimental to their energy-saving goals. Therefore, the following technical solution is proposed in this application embodiment.

[0068] In the technical solution of this application embodiment, a new SIB (referred to as the first SIB) is defined. The first SIB can also be SIB20, as shown in the reference. Figure 2 The first SIB includes the configuration information of the first MCCH. Here, the first MCCH is the control channel of 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 (i.e., the first MCCH).

[0069] Furthermore, the first MCCH is used to carry the first signaling. In this embodiment, the name of the first signaling is not limited; for example, the first signaling may be called signaling MCCH signaling. The first signaling includes configuration information for at least one first MTCH. Here, the first MTCH is the service channel (also called a data channel or transport channel) for MBS services, and it is used to transmit MBS service data (such as NR MBS service data). In other words, the first MCCH is used to configure the configuration information of the NR MBS service channel. Optionally, the NR MBS service channel can also be called NR MTCH (i.e., the first MTCH).

[0070] Specifically, the first signaling is used to configure the NR MBS service channel, the service information corresponding to the service channel, and the scheduling information corresponding to the service channel. Further, optionally, the service information corresponding to the service channel may include, for example, identification information such as TMGI or session ID. The scheduling information corresponding to the service channel may include, for example, the RNTI used when the MBS service data corresponding to the service channel is scheduled, such as G-RNTI or DRX configuration information.

[0071] It should be noted that the transmission of the first MCCH and the first MTCH is based on PDCCH scheduling.

[0072] It should be noted that the naming of the first SIB, the first MCCH, and the first MTCH is not limited in this application embodiment. For ease of description, the first SIB can also be abbreviated as SIB, the first MCCH can also be abbreviated as MCCH, and the first MTCH can also be abbreviated as MTCH, see reference. Figure 3 The system configures the PDCCH (MCCH PDCCH) for scheduling the MCCH and the notification PDCCH via SIB. The DCI carried by the MCCH PDCCH schedules the PDSCH (MCCH PDSCH) for transmitting the MCCH. Further, N PDCCHs (MTCH 1PDCCH, MTCH 2PDCCH, ..., MTCH N PDCCH) for scheduling the MTCH are configured via the MCCH. The DCI carried by the MTCH n PDCCH schedules the PDSCH (MTCH n PDSCH) for transmitting MTCH n, where n is an integer greater than or equal to 1 and less than or equal to N. The MCCH and MTCH are mapped to the DL-SCH, and the DL-SCH is further mapped to the PDSCH. The MCCH and MTCH belong to logical channels, the DL-SCH belongs to transport channels, and the PDSCH belongs to physical channels.

[0073] Figure 4 This is a flowchart illustrating the MBS configuration change method provided in this application embodiment, as shown below. Figure 4 As shown, the method for changing the MBS configuration includes the following steps:

[0074] Step 401: The network device sends a first DCI, and the terminal device receives the first DCI; wherein, the first indication information and / or the scrambling information carried in the first DCI are used to indicate that the configuration information of at least one MBS service has changed.

[0075] In this embodiment of the application, the network device may be a base station, such as a gNB.

[0076] In this embodiment of the application, the first DCI can be a notification DCI or a paging DCI.

[0077] In an optional configuration, the first DCI is a Notification DCI, and the PDCCH carrying the first DCI is a Notification PDCCH. Here, the first DCI is scrambled using a first N-RNTI. Optionally, the first N-RNTI can be a newly defined RNTI, such as MBS-N-RNTI, and is configured via a system broadcast message.

[0078] In an optional configuration, the first DCI is a paging DCI, and the PDCCH carrying the first DCI is a paging PDCCH. Here, the first DCI is scrambled using a first P-RNTI. Optionally, the first P-RNTI can be a newly defined RNTI, such as MBS-P-RNTI, and the first P-RNTI is configured via a system broadcast message.

[0079] In this embodiment, the first DCI is used to indicate a change in the configuration information of at least one MBS service. Further, optionally, the first DCI is also used to indicate that at least one MBS service is started, stopped, or paused. The following explains how the first DCI provides this indication.

[0080] ● The configuration information of at least one MBS service is changed by the first indication information carried in the first DCI.

[0081] In this embodiment of the application, the first DCI carries first indication information, which is used to indicate that the configuration information of at least one MBS service has changed. Here, the first indication information can be implemented in the following ways.

[0082] Method 1: The first indication information is an MBS service identifier list, which includes at least one MBS service identifier, and each MBS service identifier is associated with an MBS service; the MBS service identifier list is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

[0083] Furthermore, optionally, the MBS service identifier list is also used to indicate one of the following:

[0084] At least one MBS service associated with the at least one MBS service identifier is initiated;

[0085] At least one MBS service associated with the at least one MBS service identifier is stopped;

[0086] At least one MBS service associated with the at least one MBS service identifier is suspended.

[0087] In one example, the MBS service identifier list is a TMGI list, which includes at least one TMGI. Each TMGI in the TMGI list is associated with an MBS service, and the TMGI list indicates that the configuration information of at least one MBS service has changed.

[0088] For example, the TMGI list includes TMGI 1, TMGI 2 and TMGI 3, where TMGI 1 is associated with MBS service 1, TMGI 2 is associated with MBS service 2 and TMGI 3 is associated with MBS service 3. This TMGI list indicates that the configuration information of MBS service 1, MBS service 2 and MBS service 3 has changed.

[0089] Method 2: The first indication information is a first bitmap, where each bit in the first bitmap corresponds to an MBS service identifier. The value of the bit is used to indicate whether the configuration information of the MBS service associated with the MBS service identifier corresponding to that bit has changed.

[0090] Furthermore, optionally, the value of the bit may also be used to indicate one of the following:

[0091] The MBS service associated with the MBS service identifier corresponding to this bit is initiated;

[0092] The MBS service associated with the MBS service identifier corresponding to this bit is stopped.

[0093] The MBS service associated with the MBS service identifier corresponding to this bit is suspended.

[0094] In this embodiment of the application, the correspondence between the bits in the first bitmap and the MBS service identifier can be determined in the following way:

[0095] Method a) The correspondence between the bits in the first bitmap and the MBS service identifier is configured via a system broadcast message; or,

[0096] Method b) The bits in the first bitmap, in ascending order from the least significant bit, correspond one-to-one with the MBS service identifiers configured in the first configuration, in ascending order of the MBS service identifiers; or,

[0097] Method c) The bits in the first bit map are arranged from low to high order and correspond one-to-one with the MBS service identifiers configured in the first configuration in descending order of MBS service identifiers.

[0098] Method d) The bits in the first bitmap are arranged from low bit to high bit and correspond one-to-one with the MBS service identifiers configured in the first configuration in the configuration order.

[0099] In the above scheme, the first configuration includes configuration information for N MBS services, where N is a positive integer; wherein, the first configuration is carried in the first signaling in the first MCCH, or the first configuration is carried in the system broadcast message.

[0100] In one example, the MBS service is identified as TMGI. The first bitmap includes N bits, each of which corresponds to a TMGI. The value of the bit is used to indicate whether the configuration information of the MBS service associated with the TMGI corresponding to that bit has changed.

[0101] Here, the value of N is determined based on the number of MBS service configuration information included in the first configuration. Optionally, the value of N is equal to the number of MBS service configuration information included in the first configuration. The first bitmap can be used to determine whether the configuration information of each of the N MBS services has changed.

[0102] For example, if N is 6, and the first bitmap is 100101, the first bitmap corresponds one-to-one with TMGI 1, TMGI 2, TMGI 3, TMGI 4, TMGI 5, and TMGI 6 in order from low to high bits. A bit value of 1 indicates that the configuration information of the MBS service associated with the corresponding TMGI has changed, and a bit value of 0 indicates that the configuration information of the MBS service associated with the corresponding TMGI has not changed. Based on this, the configuration information of MBS service 1 associated with TMGI 1, MBS service 3 associated with TMGI 3, and MBS service 6 associated with TMGI 6 has changed, while the configuration information of MBS service 2 associated with TMGI 2, MBS service 4 associated with TMGI 4, and MBS service 5 associated with TMGI 5 has not changed.

[0103] In this embodiment, the terminal device determines whether to update the configuration information of the MBS service related to the terminal device based on the first indication information carried in the first DCI. Further, optionally, the terminal device determines whether to start receiving the MBS service related to the terminal device, or whether to stop receiving the MBS service related to the terminal device, or whether to suspend receiving the MBS service related to the terminal device, based on the first indication information carried in the first DCI.

[0104] Here, the MBS service related to the terminal device can be the MBS service that the terminal device is currently receiving, the MBS service that it expects to receive, the MBS service that it is about to receive, or the MBS service that it is interested in.

[0105] In one example, assuming the MBS service associated with the terminal device is MBS service 1, if the terminal device determines that the configuration information of MBS service 1 has been updated based on the first indication information carried in the first DCI, then the terminal device updates the configuration information of MBS service 1; if the terminal device determines that the configuration information of MBS service 1 has not been updated based on the first indication information carried in the first DCI, then the terminal device does not update the configuration information of MBS service 1.

[0106] ●The scrambling information of the first DCI indicates that the configuration information of at least one MBS service has changed.

[0107] In this embodiment of the application, the first DCI is scrambled by a first N-RNTI, and the first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service has changed.

[0108] Specifically, the first N-RNTI is associated with at least one MBS service identifier, and each MBS service identifier is associated with one MBS service; the first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of the at least one MBS service associated with the at least one MBS service identifier has changed.

[0109] Furthermore, optionally, the first DCI scrambled by the first N-RNTI is also used to indicate one of the following:

[0110] At least one MBS service associated with the at least one MBS service identifier is initiated;

[0111] At least one MBS service associated with the at least one MBS service identifier is stopped;

[0112] At least one MBS service associated with the at least one MBS service identifier is suspended.

[0113] In the above scheme, the association between the first N-RNTI and the at least one MBS service identifier is configured through a system broadcast message.

[0114] In this embodiment of the application, the association between the first N-RNTI and at least one MBS service identifier is configured through a system broadcast message.

[0115] In an alternative approach, the network device can configure multiple first N-RNTIs via system broadcast messages, wherein each first N-RNTI can be associated with at least one MBS service identifier. A first DCI scrambled onto the first N-RNTI is used to indicate a change in the configuration information of at least one MBS service associated with the at least one MBS service identifier associated with that first N-RNTI.

[0116] In one example, the MBS service is identified as TMGI.

[0117] In this embodiment, the terminal device determines whether to update the configuration information of the MBS service related to the terminal device based on the first N-RNTI scrambled with the first DCI. Further, the terminal device determines whether to start receiving the MBS service related to the terminal device, or whether to stop receiving the MBS service related to the terminal device, or whether to suspend receiving the MBS service related to the terminal device, based on the first N-RNTI scrambled with the first DCI.

[0118] Here, the MBS service related to the terminal device can be the MBS service that the terminal device is currently receiving, the MBS service that it expects to receive, the MBS service that it is about to receive, or the MBS service that it is interested in.

[0119] In one example, taking MBS service identifier TMGI as an example, the network device can configure three first N-RNTIs through system broadcast messages, namely MBS N-RNTI 1, MBS N-RNTI 2, and MBS N-RNTI 3. MBS N-RNTI 1 is associated with TMGI 1 and TMGI 2, MBS N-RNTI 2 is associated with TMGI 3, and MBS N-RNTI 3 is associated with TMGI 4 and TMGI 5. When the terminal device receives the first DCI scrambled with MBS N-RNTI 1, it can determine, through TMGI 1 and TMGI 2 associated with MBS N-RNTI 1, that the configuration information of MBS service 1 associated with TMGI 1 and MBS service 2 associated with TMGI 2 has changed. Assuming the MBS service associated with the terminal device is MBS service 1, the terminal device determines that the configuration information of MBS service 1 has changed, and the terminal device updates the configuration information of MBS service 1.

[0120] In the technical solution of this application embodiment, the network device can notify the terminal device of at least one TMGI that a configuration change has occurred through a first DCI scrambled with different first N-RNTIs, thereby enabling the terminal device to determine whether to update the configuration information of its related MBS services.

[0121] The technical solution of this application embodiment can also pre-configure the transmission status of MBS service to trigger the terminal device to obtain the configuration of MSB service in advance, thereby reducing the probability of MBS service loss.

[0122] Specifically, the network device sends a first MCCH or system broadcast message, which carries a first configuration. The terminal device obtains the first configuration from the first MCCH or system broadcast message. The first configuration includes configuration information for N MBS services, where N is a positive integer. Each of the N MBS service configuration information includes second indication information, which indicates the transmission status of the MBS service. Here, the transmission status of the MBS service is either transmitting, not transmitting, about to transmit, already stopped transmitting, or paused transmitting.

[0123] In the above scheme, the configuration information of each of the N MBS services is associated with an MBS service identifier. In one example, the MBS service identifier is TMGI.

[0124] In an optional embodiment, the configuration information of each of the N MBS services further includes an RNTI, which is used to scramble and activate or deactivate the DCI of the MBS service. Optionally, the DCI can also indicate the transmission status of the MBS service. The terminal device can use the RNTI to listen to the PDCCH and obtain the DCI from the PDCCH, which indicates the transmission status of the MBS service. Here, the transmission status of the MBS service is either transmitting, not transmitting, about to transmit, already stopped transmitting, or paused transmitting.

[0125] Optionally, the RNTI is associated with a cell, an MBS service identifier, or a group of MBS service identifiers. That is, the RNTI can be configured per cell, per TMGI, or per TMGI group.

[0126] Figure 5 This is a schematic diagram of the structure of the MBS configuration change device provided in the embodiments of this application. Figure 1 Applied to terminal devices, such as Figure 5 As shown, the device for changing the MBS configuration includes:

[0127] The receiving unit 501 is configured to receive a first DCI; wherein the first indication information carried in the first DCI and / or the scrambling information of the first DCI are used to indicate that the configuration information of at least one MBS service has changed.

[0128] In an alternative approach, the first DCI carries first indication information, which is used to indicate that the configuration information of at least one MBS service has changed.

[0129] In an optional embodiment, the first indication information is an MBS service identifier list, which includes at least one MBS service identifier, and each MBS service identifier in the at least one MBS service identifier is associated with an MBS service;

[0130] The MBS service identifier list is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

[0131] In an alternative approach, the MBS service identifier list is also used to indicate one of the following:

[0132] At least one MBS service associated with the at least one MBS service identifier is initiated;

[0133] At least one MBS service associated with the at least one MBS service identifier is stopped;

[0134] At least one MBS service associated with the at least one MBS service identifier is suspended.

[0135] In one alternative approach, the first indication information is a first bitmap, where each bit in the first bitmap corresponds to an MBS service identifier, and the value of the bit is used to indicate whether the configuration information of the MBS service associated with the MBS service identifier corresponding to that bit has changed.

[0136] In an alternative approach, the value of the bit may also be used to indicate one of the following:

[0137] The MBS service associated with the MBS service identifier corresponding to this bit is initiated;

[0138] The MBS service associated with the MBS service identifier corresponding to this bit is stopped.

[0139] The MBS service associated with the MBS service identifier corresponding to this bit is suspended.

[0140] In one alternative approach, the correspondence between bits in the first bitmap and MBS service identifiers is configured via system broadcast messages; or,

[0141] The bits in the first bitmap, arranged from least significant bit to most significant bit, correspond one-to-one with the MBS service identifiers configured in the first configuration, arranged from smallest to largest MBS service identifier; or,

[0142] The bits in the first bitmap are arranged from low to high order and correspond one-to-one with the MBS service identifiers configured in the first configuration in descending order of MBS service identifiers.

[0143] The bits in the first bitmap are arranged from least significant bit to most significant bit, and correspond one-to-one with the MBS service identifiers configured in the first configuration according to the configuration order.

[0144] In an optional configuration, the first configuration includes configuration information for N MBS services, where N is a positive integer;

[0145] The first configuration is carried in the first signaling in the first MCCH, or the first configuration is carried in the system broadcast message.

[0146] In one alternative approach, the first DCI is scrambled using a first N-RNTI; or,

[0147] The first DCI is scrambled by the first P-RNTI.

[0148] In an alternative embodiment, the device further includes:

[0149] The determining unit 502 is used to determine whether to update the configuration information of the MBS service related to the terminal device based on the first indication information carried in the first DCI.

[0150] In an alternative embodiment, the device further includes:

[0151] The determining unit 502 is configured to determine, based on the first indication information carried in the first DCI, whether to start receiving MBS services related to the terminal device, stop receiving MBS services related to the terminal device, or suspend receiving MBS services related to the terminal device.

[0152] In an alternative approach, the first DCI is scrambled by a first N-RNTI, and the first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service has changed.

[0153] In an alternative approach, the first N-RNTI is associated with at least one MBS service identifier, and each of the at least one MBS service identifiers is associated with one MBS service;

[0154] The first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

[0155] In an alternative embodiment, the first DCI scrambled by the first N-RNTI is also used to indicate one of the following:

[0156] At least one MBS service associated with the at least one MBS service identifier is initiated;

[0157] At least one MBS service associated with the at least one MBS service identifier is stopped;

[0158] At least one MBS service associated with the at least one MBS service identifier is suspended.

[0159] In an alternative approach, the association between the first N-RNTI and the at least one MBS service identifier is configured via a system broadcast message.

[0160] In an alternative embodiment, the device further includes:

[0161] The determining unit 502 is used to determine whether to update the configuration information of the MBS service related to the terminal device based on the first N-RNTI of the scrambled first DCI.

[0162] In an alternative embodiment, the device further includes:

[0163] The determining unit 502 is configured to determine, based on the first N-RNTI of the scrambled first DCI, whether to start receiving MBS services related to the terminal device, or whether to stop receiving MBS services related to the terminal device, or whether to suspend receiving MBS services related to the terminal device.

[0164] In an alternative embodiment, the device further includes:

[0165] The acquisition unit (not shown in the figure) is used to acquire the first configuration from the first MCCH or system broadcast message. The first configuration includes configuration information of N MBS services, where N is a positive integer.

[0166] In one optional approach, the configuration information of each of the N MBS services includes second indication information, which is used to indicate the transmission status of the MBS service.

[0167] In one optional approach, the configuration information of each of the N MBS services is associated with the MBS service identifier of one MBS service.

[0168] In an optional approach, the configuration information of each of the N MBS services further includes an RNTI, which is used to scramble to activate or deactivate the DCI of the MBS service.

[0169] In an alternative embodiment, the DCI is also used to indicate the transmission status of the MBS service.

[0170] In one alternative approach, the RNTI is associated with a cell, an MBS service identifier, or a set of MBS service identifiers.

[0171] In one optional mode, the transmission status of the MBS service is either transmitting, not transmitting, about to transmit, already stopped transmitting, or paused transmitting.

[0172] In an alternative approach, the MBS service identifier is TMGI.

[0173] Those skilled in the art should understand that the description of the MBS configuration change apparatus in the embodiments of this application can be understood with reference to the description of the MBS configuration change method in the embodiments of this application.

[0174] Figure 6 This is a schematic diagram of the structure of the MBS configuration change device provided in the embodiments of this application. Figure 2 Applied to network devices, such as Figure 6 As shown, the device for changing the MBS configuration includes:

[0175] The transmitting unit 601 is used to transmit a first DCI; wherein the first indication information carried in the first DCI and / or the scrambling information of the first DCI are used to indicate that the configuration information of at least one MBS service has changed.

[0176] In an alternative approach, the first DCI carries first indication information, which is used to indicate that the configuration information of at least one MBS service has changed.

[0177] In an optional embodiment, the first indication information is an MBS service identifier list, which includes at least one MBS service identifier, and each MBS service identifier in the at least one MBS service identifier is associated with an MBS service;

[0178] The MBS service identifier list is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

[0179] In an alternative approach, the MBS service identifier list is also used to indicate one of the following:

[0180] At least one MBS service associated with the at least one MBS service identifier is initiated;

[0181] At least one MBS service associated with the at least one MBS service identifier is stopped;

[0182] At least one MBS service associated with the at least one MBS service identifier is suspended.

[0183] In one alternative approach, the first indication information is a first bitmap, where each bit in the first bitmap corresponds to an MBS service identifier, and the value of the bit is used to indicate whether the configuration information of the MBS service associated with the MBS service identifier corresponding to that bit has changed.

[0184] In an alternative approach, the value of the bit may also be used to indicate one of the following:

[0185] The MBS service associated with the MBS service identifier corresponding to this bit is initiated;

[0186] The MBS service associated with the MBS service identifier corresponding to this bit is stopped.

[0187] The MBS service associated with the MBS service identifier corresponding to this bit is suspended.

[0188] In one alternative approach, the correspondence between bits in the first bitmap and MBS service identifiers is configured via system broadcast messages; or,

[0189] The bits in the first bitmap, arranged from least significant bit to most significant bit, correspond one-to-one with the MBS service identifiers configured in the first configuration, arranged from smallest to largest MBS service identifier; or,

[0190] The bits in the first bitmap are arranged from low to high order and correspond one-to-one with the MBS service identifiers configured in the first configuration in descending order of MBS service identifiers.

[0191] The bits in the first bitmap are arranged from least significant bit to most significant bit, and correspond one-to-one with the MBS service identifiers configured in the first configuration according to the configuration order.

[0192] In an optional configuration, the first configuration includes configuration information for N MBS services, where N is a positive integer;

[0193] The first configuration is carried in the first signaling in the first MCCH, or the first configuration is carried in the system broadcast message.

[0194] In one alternative approach, the first DCI is scrambled using a first N-RNTI; or,

[0195] The first DCI is scrambled by the first P-RNTI.

[0196] In an alternative approach, the first DCI is scrambled by a first N-RNTI, and the first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service has changed.

[0197] In an alternative approach, the first N-RNTI is associated with at least one MBS service identifier, and each of the at least one MBS service identifiers is associated with one MBS service;

[0198] The first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

[0199] In an alternative embodiment, the first DCI scrambled by the first N-RNTI is also used to indicate one of the following:

[0200] At least one MBS service associated with the at least one MBS service identifier is initiated;

[0201] At least one MBS service associated with the at least one MBS service identifier is stopped;

[0202] At least one MBS service associated with the at least one MBS service identifier is suspended.

[0203] In an alternative approach, the association between the first N-RNTI and the at least one MBS service identifier is configured via a system broadcast message.

[0204] In an optional configuration, the sending unit 601 is further configured to send a first MCCH or system broadcast message, the first MCCH or system broadcast message carrying a first configuration, the first configuration including configuration information of N MBS services, where N is a positive integer.

[0205] In one optional approach, the configuration information of each of the N MBS services includes second indication information, which is used to indicate the transmission status of the MBS service.

[0206] In one optional approach, the configuration information of each of the N MBS services is associated with the MBS service identifier of one MBS service.

[0207] In an optional approach, the configuration information of each of the N MBS services further includes an RNTI, which is used to scramble to activate or deactivate the DCI of the MBS service.

[0208] In an alternative embodiment, the DCI is also used to indicate the transmission status of the MBS service.

[0209] In one alternative approach, the RNTI is associated with a cell, an MBS service identifier, or a set of MBS service identifiers.

[0210] In one optional mode, the transmission status of the MBS service is either transmitting, not transmitting, about to transmit, already stopped transmitting, or paused transmitting.

[0211] In an alternative approach, the MBS service identifier is TMGI.

[0212] Those skilled in the art should understand that the description of the MBS configuration change apparatus in the embodiments of this application can be understood with reference to the description of the MBS configuration change method in the embodiments of this application.

[0213] Figure 7 This is a schematic structural diagram of a communication device 700 provided in an embodiment of this application. This communication device can be a terminal device or a network device. Figure 7 The communication device 700 shown includes a processor 710, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0214] Optionally, such as Figure 7 As shown, the communication device 700 may further include a memory 720. The processor 710 can retrieve and run computer programs from the memory 720 to implement the methods described in this embodiment.

[0215] The memory 720 can be a separate device independent of the processor 710, or it can be integrated into the processor 710.

[0216] Optionally, such as Figure 7 As shown, the communication device 700 may also include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

[0217] The transceiver 730 may include a transmitter and a receiver. The transceiver 730 may further include antennas, and the number of antennas may be one or more.

[0218] Optionally, the communication device 700 may specifically be a network device in the embodiments of this application, and the communication device 700 may implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0219] Optionally, the communication device 700 may specifically be a mobile terminal / terminal device in the embodiments of this application, and the communication device 700 may implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0220] Figure 8 This is a schematic structural diagram of the chip according to an embodiment of this application. Figure 8 The chip 800 shown includes a processor 810, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0221] Optionally, such as Figure 8 As shown, chip 800 may further include memory 820. Processor 810 can retrieve and run computer programs from memory 820 to implement the methods described in this embodiment.

[0222] The memory 820 can be a separate device independent of the processor 810, or it can be integrated into the processor 810.

[0223] Optionally, the chip 800 may also include an input interface 830. The processor 810 can control the input interface 830 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0224] Optionally, the chip 800 may also include an output interface 840. The processor 810 can control the output interface 840 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0225] Optionally, the chip can be applied to the network device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0226] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0227] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0228] Figure 9 This is a schematic block diagram of a communication system 900 provided in an embodiment of this application. Figure 9 As shown, the communication system 900 includes a terminal device 910 and a network device 920.

[0229] The terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, these will not be elaborated here.

[0230] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above 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. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0231] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0232] It should be understood that the above-described memory is exemplary and not a limiting description. For example, the memory in the embodiments of this 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 memory bus RAM (DR RAM), etc. That is to say, the memory in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0233] This application also provides a computer-readable storage medium for storing computer programs.

[0234] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0235] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0236] This application also provides a computer program product, including computer program instructions.

[0237] Optionally, the computer program product can be applied to the network device in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, they will not be described in detail here.

[0238] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, they will not be described in detail here.

[0239] This application also provides a computer program.

[0240] Optionally, the computer program can be applied to the network device in the embodiments of this application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0241] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of this application. When the computer program is run on a computer, it causes the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0242] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art 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.

[0243] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0244] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0245] The units described as separate components may or may not be physically separate. 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 the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0246] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0247] If the aforementioned functions are implemented as 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 this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0248] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for changing the configuration of a multicast service (MBS), the method comprising: The terminal device receives first downlink control information (DCI); wherein, the first indication information and / or the scrambling information carried in the first DCI are used to indicate that the configuration information of at least one MBS service has changed. The terminal device obtains a first configuration from a first MCCH or a system broadcast message. The first configuration includes configuration information for N MBS services, where N is a positive integer. Each MBS service configuration information contains second indication information, which is used to indicate the transmission status of the MBS service.

2. The method according to claim 1, wherein, The first indication information is an MBS service identifier list, which includes at least one MBS service identifier, and each MBS service identifier in the at least one MBS service identifier is associated with an MBS service; The MBS service identifier list is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

3. The method according to claim 2, wherein, The MBS service identifier list is also used to indicate one of the following: At least one MBS service associated with the at least one MBS service identifier is initiated; At least one MBS service associated with the at least one MBS service identifier is stopped; At least one MBS service associated with the at least one MBS service identifier is suspended.

4. The method according to claim 1, wherein, The first indication information is a first bitmap, where each bit in the first bitmap corresponds to an MBS service identifier. The value of the bit is used to indicate whether the configuration information of the MBS service associated with the MBS service identifier corresponding to that bit has changed.

5. The method according to claim 4, wherein, The value of the bit is also used to indicate one of the following: The MBS service associated with the MBS service identifier corresponding to this bit is initiated; The MBS service associated with the MBS service identifier corresponding to this bit is stopped. The MBS service associated with the MBS service identifier corresponding to this bit is suspended.

6. The method according to claim 4 or 5, wherein, The correspondence between bits in the first bitmap and MBS service identifiers is configured via system broadcast messages; or... The bits in the first bitmap are arranged from low to high order and correspond one-to-one with the MBS service identifiers configured in the first configuration in ascending order. or, The bits in the first bitmap are arranged from low to high order and correspond one-to-one with the MBS service identifiers configured in the first configuration in descending order of MBS service identifiers. The bits in the first bitmap are arranged from least significant bit to most significant bit, and correspond one-to-one with the MBS service identifiers configured in the first configuration according to the configuration order.

7. The method according to claim 6, wherein, The first configuration includes configuration information for N MBS services, where N is a positive integer; The first configuration is carried in the first signaling in the first MCCH, or the first configuration is carried in the system broadcast message.

8. The method according to any one of claims 2 to 5 and 7, wherein, The first DCI is scrambled using the first notification radio network temporary identifier N-RNTI; or, The first DCI is scrambled using the first paging wireless network temporary identifier P-RNTI.

9. The method according to claim 8, wherein, The method further includes: The terminal device determines whether to update the configuration information of the MBS service related to the terminal device based on the first indication information carried in the first DCI.

10. The method according to claim 9, wherein, The method further includes: The terminal device determines, based on the first indication information carried in the first DCI, whether to start receiving MBS services related to the terminal device, whether to stop receiving MBS services related to the terminal device, or whether to suspend receiving MBS services related to the terminal device.

11. The method according to claim 1, wherein, The first DCI is scrambled by a first N-RNTI, and the first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service has changed.

12. The method according to claim 11, wherein, The first N-RNTI is associated with at least one MBS service identifier, and each MBS service identifier in the at least one MBS service identifier is associated with one MBS service; The first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

13. The method according to claim 12, wherein, The first DCI scrambled by the first N-RNTI is also used to indicate one of the following: At least one MBS service associated with the at least one MBS service identifier is initiated; At least one MBS service associated with the at least one MBS service identifier is stopped; At least one MBS service associated with the at least one MBS service identifier is suspended.

14. The method according to claim 12 or 13, wherein, The association between the first N-RNTI and the at least one MBS service identifier is configured via a system broadcast message.

15. The method according to any one of claims 11 to 13, wherein, The method further includes: The terminal device determines whether to update the configuration information of the MBS service related to the terminal device based on the first N-RNTI scrambled with the first DCI.

16. The method according to claim 15, wherein, The method further includes: The terminal device determines whether to start receiving MBS services related to the terminal device, stop receiving MBS services related to the terminal device, or suspend receiving MBS services related to the terminal device based on the first N-RNTI scrambled with the first DCI.

17. The method according to claim 1, wherein, The configuration information of each of the N MBS services is associated with the MBS service identifier of one MBS service.

18. The method according to claim 1 or 17, wherein, The configuration information of each of the N MBS services also includes an RNTI, which is used to scramble to activate or deactivate the DCI of the MBS service.

19. The method according to claim 18, wherein, The DCI of the MBS service is also used to indicate the transmission status of the MBS service.

20. The method according to claim 19, wherein, The RNTI is associated with a cell, an MBS service identifier, or a group of MBS service identifiers.

21. The method according to claim 1 or 19, wherein, The transmission status of the MBS service is either transmitting, not transmitting, about to transmit, already stopped transmitting, or paused transmitting.

22. The method according to any one of claims 2 to 5, 7, 12, 13, 17, and 20, wherein, The MBS service identifier is the Temporary Mobility Group Identifier (TMGI).

23. A method for changing MBS configuration, the method comprising: The network device sends a first DCI; wherein the first indication information carried in the first DCI and / or the scrambling information of the first DCI are used to indicate that the configuration information of at least one MBS service has changed; The method further includes: The network device sends a first MCCH or system broadcast message, the first MCCH or system broadcast message carrying a first configuration, the first configuration including configuration information of N MBS services, where N is a positive integer; wherein, the configuration information of each of the N MBS services includes second indication information, the second indication information being used to indicate the transmission status of the MBS service.

24. The method according to claim 23, wherein, The first indication information is an MBS service identifier list, which includes at least one MBS service identifier, and each MBS service identifier in the at least one MBS service identifier is associated with an MBS service; The MBS service identifier list is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

25. The method according to claim 24, wherein, The MBS service identifier list is also used to indicate one of the following: At least one MBS service associated with the at least one MBS service identifier is initiated; At least one MBS service associated with the at least one MBS service identifier is stopped; At least one MBS service associated with the at least one MBS service identifier is suspended.

26. The method according to claim 23, wherein, The first indication information is a first bitmap, where each bit in the first bitmap corresponds to an MBS service identifier. The value of the bit is used to indicate whether the configuration information of the MBS service associated with the MBS service identifier corresponding to that bit has changed.

27. The method according to claim 26, wherein, The value of the bit is also used to indicate one of the following: The MBS service associated with the MBS service identifier corresponding to this bit is initiated; The MBS service associated with the MBS service identifier corresponding to this bit is stopped. The MBS service associated with the MBS service identifier corresponding to this bit is suspended.

28. The method according to claim 26 or 27, wherein, The correspondence between bits in the first bitmap and MBS service identifiers is configured via system broadcast messages; or... The bits in the first bitmap are arranged from low to high order and correspond one-to-one with the MBS service identifiers configured in the first configuration in ascending order. or, The bits in the first bitmap are arranged from low to high order and correspond one-to-one with the MBS service identifiers configured in the first configuration in descending order of MBS service identifiers. The bits in the first bitmap are arranged from least significant bit to most significant bit, and correspond one-to-one with the MBS service identifiers configured in the first configuration according to the configuration order.

29. The method according to claim 28, wherein, The first configuration includes configuration information for N MBS services, where N is a positive integer; The first configuration is carried in the first signaling in the first MCCH, or the first configuration is carried in the system broadcast message.

30. The method according to any one of claims 25 to 27, 29, wherein, The first DCI is scrambled by the first N-RNTI; or, The first DCI is scrambled by the first P-RNTI.

31. The method according to claim 23, wherein, The first DCI is scrambled by a first N-RNTI, and the first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service has changed.

32. The method according to claim 31, wherein, The first N-RNTI is associated with at least one MBS service identifier, and each MBS service identifier in the at least one MBS service identifier is associated with one MBS service; The first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

33. The method according to claim 32, wherein, The first DCI scrambled by the first N-RNTI is also used to indicate one of the following: At least one MBS service associated with the at least one MBS service identifier is initiated; At least one MBS service associated with the at least one MBS service identifier is stopped; At least one MBS service associated with the at least one MBS service identifier is suspended.

34. The method according to claim 32 or 33, wherein, The association between the first N-RNTI and the at least one MBS service identifier is configured via a system broadcast message.

35. The method according to claim 23, wherein, The configuration information of each of the N MBS services is associated with the MBS service identifier of one MBS service.

36. The method according to claim 23 or 35, wherein, The configuration information of each of the N MBS services also includes an RNTI, which is used to scramble to activate or deactivate the DCI of the MBS service.

37. The method according to claim 36, wherein, The DCI of the MBS service is also used to indicate the transmission status of the MBS service.

38. The method according to claim 36, wherein, The RNTI is associated with a cell, an MBS service identifier, or a group of MBS service identifiers.

39. The method according to claim 23 or 37, wherein, The transmission status of the MBS service is either transmitting, not transmitting, about to transmit, already stopped transmitting, or paused transmitting.

40. The method according to any one of claims 24 to 27, 29, 32, 33, 35, and 38, wherein, The MBS service identifier is TMGI.

41. An apparatus for changing MBS configuration, applied to a terminal device, the apparatus comprising: A receiving unit is configured to receive a first DCI; wherein the first indication information carried in the first DCI and / or the scrambling information of the first DCI are used to indicate that the configuration information of at least one MBS service has changed. The device further includes: The acquisition unit is used to acquire a first configuration from a first MCCH or a system broadcast message. The first configuration includes configuration information for N MBS services, where N is a positive integer. Each MBS service configuration information contains second indication information, which is used to indicate the transmission status of the MBS service.

42. The apparatus according to claim 41, wherein, The first indication information is an MBS service identifier list, which includes at least one MBS service identifier, and each MBS service identifier in the at least one MBS service identifier is associated with an MBS service; The MBS service identifier list is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

43. The apparatus according to claim 42, wherein, The MBS service identifier list is also used to indicate one of the following: At least one MBS service associated with the at least one MBS service identifier is initiated; At least one MBS service associated with the at least one MBS service identifier is stopped; At least one MBS service associated with the at least one MBS service identifier is suspended.

44. The apparatus according to claim 41, wherein, The first indication information is a first bitmap, where each bit in the first bitmap corresponds to an MBS service identifier. The value of the bit is used to indicate whether the configuration information of the MBS service associated with the MBS service identifier corresponding to that bit has changed.

45. The apparatus according to claim 44, wherein, The value of the bit is also used to indicate one of the following: The MBS service associated with the MBS service identifier corresponding to this bit is initiated; The MBS service associated with the MBS service identifier corresponding to this bit is stopped. The MBS service associated with the MBS service identifier corresponding to this bit is suspended.

46. ​​The apparatus according to claim 44 or 45, wherein, The correspondence between bits in the first bitmap and MBS service identifiers is configured via system broadcast messages; or... The bits in the first bitmap are arranged from low to high order and correspond one-to-one with the MBS service identifiers configured in the first configuration in ascending order. or, The bits in the first bitmap are arranged from low to high order and correspond one-to-one with the MBS service identifiers configured in the first configuration in descending order of MBS service identifiers. The bits in the first bitmap are arranged from least significant bit to most significant bit, and correspond one-to-one with the MBS service identifiers configured in the first configuration according to the configuration order.

47. The apparatus according to claim 46, wherein, The first configuration includes configuration information for N MBS services, where N is a positive integer; The first configuration is carried in the first signaling in the first MCCH, or the first configuration is carried in the system broadcast message.

48. The apparatus according to any one of claims 41 to 45, 47, wherein, The first DCI is scrambled by the first N-RNTI; or, The first DCI is scrambled by the first P-RNTI.

49. The apparatus according to claim 48, wherein, The device further includes: The determining unit is configured to determine whether to update the configuration information of the MBS service related to the terminal device based on the first indication information carried in the first DCI.

50. The apparatus according to claim 49, wherein, The device further includes: The determining unit is configured to determine, based on the first indication information carried in the first DCI, whether to start receiving MBS services related to the terminal device, or whether to stop receiving MBS services related to the terminal device, or whether to suspend receiving MBS services related to the terminal device.

51. The apparatus according to claim 41, wherein, The first DCI is scrambled by a first N-RNTI, and the first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service has changed.

52. The apparatus according to claim 51, wherein, The first N-RNTI is associated with at least one MBS service identifier, and each MBS service identifier in the at least one MBS service identifier is associated with one MBS service; The first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

53. The apparatus according to claim 52, wherein, The first DCI scrambled by the first N-RNTI is also used to indicate one of the following: At least one MBS service associated with the at least one MBS service identifier is initiated; At least one MBS service associated with the at least one MBS service identifier is stopped; At least one MBS service associated with the at least one MBS service identifier is suspended.

54. The apparatus according to claim 52 or 53, wherein, The association between the first N-RNTI and the at least one MBS service identifier is configured via a system broadcast message.

55. The apparatus according to any one of claims 51 to 53, wherein, The device further includes: The determining unit is configured to determine whether to update the configuration information of the MBS service related to the terminal device based on the first N-RNTI scrambled with the first DCI.

56. The apparatus according to claim 55, wherein, The device further includes: The determining unit is configured to determine, based on the first N-RNTI of the scrambled first DCI, whether to start receiving MBS services related to the terminal device, or whether to stop receiving MBS services related to the terminal device, or whether to suspend receiving MBS services related to the terminal device.

57. The apparatus according to claim 41, wherein, The configuration information of each of the N MBS services is associated with the MBS service identifier of one MBS service.

58. The apparatus according to claim 41 or 57, wherein, The configuration information of each of the N MBS services also includes an RNTI, which is used to scramble to activate or deactivate the DCI of the MBS service.

59. The apparatus according to claim 58, wherein, The DCI of the MBS service is also used to indicate the transmission status of the MBS service.

60. The apparatus according to claim 59, wherein, The RNTI is associated with a cell, an MBS service identifier, or a group of MBS service identifiers.

61. The apparatus according to claim 41 or 59, wherein, The transmission status of the MBS service is either transmitting, not transmitting, about to transmit, already stopped transmitting, or paused transmitting.

62. The apparatus according to any one of claims 42 to 45, 47, 52, 53, 57, and 60, wherein, The MBS service identifier is TMGI.

63. An apparatus for changing MBS configuration, applied to a network device, the apparatus comprising: A transmitting unit is configured to transmit a first DCI; wherein the first indication information carried in the first DCI and / or the scrambling information of the first DCI are used to indicate that the configuration information of at least one MBS service has changed; The sending unit is further configured to send a first MCCH or system broadcast message, the first MCCH or system broadcast message carrying a first configuration, the first configuration including configuration information of N MBS services, where N is a positive integer; wherein, the configuration information of each of the N MBS services includes second indication information, the second indication information being used to indicate the transmission status of the MBS service.

64. The apparatus according to claim 63, wherein, The first indication information is an MBS service identifier list, which includes at least one MBS service identifier, and each MBS service identifier in the at least one MBS service identifier is associated with an MBS service; The MBS service identifier list is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

65. The apparatus according to claim 64, wherein, The MBS service identifier list is also used to indicate one of the following: At least one MBS service associated with the at least one MBS service identifier is initiated; At least one MBS service associated with the at least one MBS service identifier is stopped; At least one MBS service associated with the at least one MBS service identifier is suspended.

66. The apparatus according to claim 63, wherein, The first indication information is a first bitmap, where each bit in the first bitmap corresponds to an MBS service identifier. The value of the bit is used to indicate whether the configuration information of the MBS service associated with the MBS service identifier corresponding to that bit has changed.

67. The apparatus according to claim 66, wherein, The value of the bit is also used to indicate one of the following: The MBS service associated with the MBS service identifier corresponding to this bit is initiated; The MBS service associated with the MBS service identifier corresponding to this bit is stopped. The MBS service associated with the MBS service identifier corresponding to this bit is suspended.

68. The apparatus according to claim 66 or 67, wherein, The correspondence between bits in the first bitmap and MBS service identifiers is configured via system broadcast messages; or... The bits in the first bitmap are arranged from low to high order and correspond one-to-one with the MBS service identifiers configured in the first configuration in ascending order. or, The bits in the first bitmap are arranged from low to high order and correspond one-to-one with the MBS service identifiers configured in the first configuration in descending order of MBS service identifiers. The bits in the first bitmap are arranged from least significant bit to most significant bit, and correspond one-to-one with the MBS service identifiers configured in the first configuration according to the configuration order.

69. The apparatus according to claim 68, wherein, The first configuration includes configuration information for N MBS services, where N is a positive integer; The first configuration is carried in the first signaling in the first MCCH, or the first configuration is carried in the system broadcast message.

70. The apparatus according to any one of claims 63 to 67, 69, wherein, The first DCI is scrambled by the first N-RNTI; or, The first DCI is scrambled by the first P-RNTI.

71. The apparatus according to claim 63, wherein, The first DCI is scrambled by a first N-RNTI, and the first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service has changed.

72. The apparatus according to claim 71, wherein, The first N-RNTI is associated with at least one MBS service identifier, and each MBS service identifier in the at least one MBS service identifier is associated with one MBS service; The first DCI scrambled by the first N-RNTI is used to indicate that the configuration information of at least one MBS service associated with the at least one MBS service identifier has changed.

73. The apparatus according to claim 72, wherein, The first DCI scrambled by the first N-RNTI is also used to indicate one of the following: At least one MBS service associated with the at least one MBS service identifier is initiated; At least one MBS service associated with the at least one MBS service identifier is stopped; At least one MBS service associated with the at least one MBS service identifier is suspended.

74. The apparatus according to claim 72 or 73, wherein, The association between the first N-RNTI and the at least one MBS service identifier is configured via a system broadcast message.

75. The apparatus according to claim 63, wherein, The configuration information of each of the N MBS services is associated with the MBS service identifier of one MBS service.

76. The apparatus according to claim 63 or 75, wherein, The configuration information of each of the N MBS services also includes an RNTI, which is used to scramble to activate or deactivate the DCI of the MBS service.

77. The apparatus according to claim 76, wherein, The DCI of the MBS service is also used to indicate the transmission status of the MBS service.

78. The apparatus according to claim 76, wherein, The RNTI is associated with a cell, an MBS service identifier, or a group of MBS service identifiers.

79. The apparatus according to claim 63 or 77, wherein, The transmission status of the MBS service is either transmitting, not transmitting, about to transmit, already stopped transmitting, or paused transmitting.

80. The apparatus according to any one of claims 64 to 67, 69, 72, 73, 75, and 78, wherein, The MBS service identifier is TMGI.

81. A terminal device, comprising: A processor and a memory for storing a computer program, the processor for calling and running the computer program stored in the memory to perform the method as described in any one of claims 1 to 22.

82. A network device, comprising: A processor and a memory for storing a computer program, the processor for calling and running the computer program stored in the memory to perform the method as described in any one of claims 23 to 40.

83. A chip, comprising: A processor for retrieving and running a computer program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1 to 22.

84. A chip, comprising: A processor for retrieving and running a computer program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 23 to 40.

85. A computer-readable storage medium for storing a computer program that causes a computer to perform the method as described in any one of claims 1 to 22.

86. A computer-readable storage medium for storing a computer program that causes a computer to perform the method as claimed in any one of claims 23 to 40.

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