MBS service TCI status management method and device, and terminal equipment

Abstract

An embodiment of the present application provides a TCI state management method and apparatus, and a terminal device for an MBS service. The method includes: the terminal device receives a first MAC CE sent by a network device, and the first MAC CE is used to activate a first TCI state in a first TCI state list; when the terminal device determines that the first TCI state is the PDCCH TCI state of the MBS service, the terminal device receives the PDCCH of the MBS service based on the first TCI state.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a method and apparatus for managing the state of a transmission configuration indicator (TCI) of a multimedia multicast service (MBS) service, and a terminal device. Background Art

[0002] During the transmission of MBS services in a multicast manner, since multiple users receive one MBS service together, the beam coverage of different users is different. Therefore, how to receive MBS services in a beam manner in a multicast manner is a problem that needs to be solved. Summary of the invention

[0003] The embodiments of the present application provide a TCI status management method and apparatus for MBS services, and a terminal device.

[0004] The TCI state management method of the MBS service provided in the embodiment of the present application includes:

[0005] The terminal device receives a first media access control control element (MAC CE) sent by the network device, where the first MAC CE is used to activate a first TCI state in a first TCI state list;

[0006] When the terminal device determines that the first TCI state is the physical downlink control channel (PDCCH) TCI state of the MBS service, the terminal device receives the PDCCH of the MBS service based on the first TCI state.

[0007] The TCI state management method of the MBS service provided in the embodiment of the present application includes:

[0008] The terminal device receives a second MAC CE sent by the network device, where the second MAC CE is used to activate N TCI states in the second TCI state list, where N is a positive integer;

[0009] When the terminal device determines that the N TCI states are physical downlink shared channel (PDSCH) TCI states of the MBS service, the terminal device receives the PDSCH of the MBS service based on one TCI state among the N TCI states.

[0010] The TCI state management device for MBS service provided in the embodiment of the present application includes:

[0011] A receiving unit is used to receive a first MAC CE sent by a network device, where the first MAC CE is used to activate a first TCI state in a first TCI state list; when it is determined that the first TCI state is the PDCCH TCI state of the MBS service, the PDCCH of the MBS service is received based on the first TCI state.

[0012] The TCI state management device for MBS service provided in the embodiment of the present application includes:

[0013] A receiving unit is used to receive a second MAC CE sent by a network device, where the second MAC CE is used to activate N TCI states in a second TCI state list, where N is a positive integer; when it is determined that the N TCI states are PDSCH TCI states of the MBS service, the PDSCH of the MBS service is received based on one TCI state among the N TCI states.

[0014] The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the TCI state management method of the MBS service.

[0015] The network device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the TCI state management method of the MBS service.

[0016] The chip provided in the embodiment of the present application is used to implement the TCI state management method of the above-mentioned MBS service.

[0017] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned TCI state management method for MBS services.

[0018] The computer-readable storage medium provided in the embodiment of the present application is used to store a computer program, which enables a computer to execute the TCI status management method for the MBS service.

[0019] The computer program product provided in the embodiment of the present application includes computer program instructions, which enable a computer to execute the TCI state management method for the MBS service.

[0020] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the TCI state management method for the MBS service described above.

[0021] Through the above technical solution, a method for TCI state management of MBS service in multicast transmission is proposed, a TCI state list is configured for the terminal device, and one or more TCI states in the TCI state list are activated through MAC CE, so as to receive the physical downlink channel (such as PDCCH or PDSCH) of the MBS service based on the activated TCI state. Here, the TCI state is used to determine the downlink receiving beam, and the terminal device uses the downlink receiving beam corresponding to the TCI state to receive the physical downlink channel of the MBS service, thereby realizing the reception of the MBS service by beam mode in the multicast mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

[0024] Figure 2 A schematic diagram of beam sweeping provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of SSB provided in an embodiment of the present application;

[0026] Figure 4 A schematic diagram of an SSB burst set cycle provided in an embodiment of the present application;

[0027] Figure 5 It is a schematic diagram of the MBS service provided by the embodiment of the present application being transmitted in a multicast manner and a unicast manner;

[0028] Figure 6 It is a schematic diagram of MBS service transmitted through beams provided in an embodiment of the present application;

[0029] Figure 7 This is a flow chart of the TCI state management method for MBS services provided in an embodiment of the present application. Figure 1 ;

[0030] Figure 8 is a structural diagram of a first MAC CE provided in an embodiment of the present application;

[0031] Fig. 9This is a flow chart of the TCI state management method for MBS services provided in an embodiment of the present application. Figure 2 ;

[0032] Fig.10 is a structural diagram of a second MAC CE provided in an embodiment of the present application;

[0033] Fig.11 This is a schematic diagram of the structure of the TCI state management device for MBS services provided in an embodiment of the present application. Figure 1 ;

[0034] Fig.12 This is a schematic diagram of the structure of the TCI state management device for MBS services provided in an embodiment of the present application. Figure 2 ;

[0035] Fig.13 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0036] Fig.14 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0037] Fig.15 It is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, 5G communication system or future communication system, etc.

[0040] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal). The network device 110 may provide communication coverage for a specific geographical area, and may communicate with terminals located within the coverage area. Optionally, the network device 110 may be an evolved base station (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future communication system, etc.

[0041] The communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110. As used herein, "terminal" includes but is not limited to connecting via a wired line, such as via a Public Switched Telephone Networks (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection; and / or another data connection / network; and / or via a wireless interface, such as, for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and / or another terminal configured to receive / send communication signals; and / or an Internet of Things (IoT) device. A terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A terminal may refer to an access terminal, User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

[0042] Optionally, the terminals 120 may perform device-to-device (D2D) communication.

[0043] Optionally, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0044] Figure 1 One network device and two terminals are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminals within its coverage area, which is not limited in the embodiments of the present application.

[0045] 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 the embodiments of the present application.

[0046] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal 120 with communication functions. The network device 110 and the terminal 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0047] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions related to the embodiments of the present application are described below.

[0049] With the pursuit of speed, latency, high-speed mobility, energy efficiency and the diversity and complexity of services in future life, the Third Generation Partnership Project (3GPP) rd The 3rd Generation Partnership Project (3GPP) international standard organization has begun to develop 5G. The main application scenarios of 5G are: enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC).

[0050] On the one hand, eMBB still aims at users to obtain multimedia content, services and data, and its demand is growing rapidly. On the other hand, since eMBB may be deployed in different scenarios, such as indoors, in urban areas, and in rural areas, its capabilities and requirements vary greatly, so it cannot be generalized and must be analyzed in detail in combination with specific deployment scenarios. Typical applications of URLLC include: industrial automation, power automation, remote medical operations (surgery), traffic safety, etc. Typical features of mMTC include: high connection density, small data volume, latency-insensitive services, low cost and long service life of modules, etc.

[0051] In the early days of NR deployment, complete NR coverage was difficult to obtain, so the typical network coverage was wide-area LTE coverage and NR island coverage. In addition, a large number of LTEs are deployed below 6GHz, and there is little spectrum below 6GHz available for 5G. Therefore, NR must study spectrum applications above 6GHz, but high-frequency bands have limited coverage and fast signal fading. At the same time, in order to protect mobile operators' early investments in LTE, a tight interworking working mode between LTE and NR was proposed.

[0052] RRC Status

[0053] In order to reduce air interface signaling and quickly restore wireless connections and data services, 5G defines a new Radio Resource Control (RRC) state, namely the RRC inactive (RRC_INACTIVE) state. This state is different from the RRC idle (RRC_IDLE) state and the RRC active (RRC_ACTIVE) state.

[0054] 1) RRC_IDLE state (abbreviated as idle state): Mobility is based on cell selection and reselection of terminal equipment, paging is initiated by the core network (CN), and the paging area is configured by the CN. There is no terminal equipment context on the base station side, and there is no RRC connection.

[0055] 2) RRC_CONNECTED state (referred to as connected state): There is an RRC connection, and there is a terminal device context on the base station side and the terminal device side. The network side knows the location of the terminal device at the specific cell level. The mobility is the mobility controlled by the network side. Unicast data can be transmitted between the terminal device and the base station.

[0056] 3) RRC_INACTIVE state (abbreviated as inactive state): Mobility is based on cell selection reselection of the terminal device, there is a connection between CN-NR, the terminal device context exists on a certain base station, paging is triggered by RAN, and the paging area based on RAN is managed by RAN. The network side knows the location of the terminal device based on the paging area level of RAN.

[0057] Beam sweeping

[0058] NR will be deployed at high frequencies in the future. In order to improve coverage, in 5G, the beam sweeping mechanism is introduced to meet the coverage requirements (exchange space for coverage, and exchange time for space). Figure 2 After the introduction of beam sweeping, synchronization signals need to be sent in each beam direction. The 5G synchronization signal is given in the form of SSB, including the primary synchronization signal (PSS), the secondary synchronization signal (SSS), and the physical broadcast channel (PBCH), as shown in Figure 1. Figure 3 The 5G synchronization signal appears periodically in the time domain in the form of a synchronization signal burst set (SS burst set), as shown in Figure 4 shown.

[0059] MBMS

[0060] MBMS is a technology that transmits data from one data source to multiple UEs by sharing network resources. This technology can effectively utilize network resources while providing multimedia services, and realize broadcast and multicast of multimedia services at a higher rate (such as 256kbps).

[0061] Since MBMS spectrum efficiency is low, it is not enough to effectively carry and support the operation of mobile TV services. Therefore, in LTE, 3GPP explicitly proposed to enhance the support capability for downlink high-speed MBMS services and determined the design requirements for the physical layer and air interface.

[0062] 3GPP R9 introduced evolved MBMS (eMBMS) into LTE. eMBMS proposed the concept of Single Frequency Network (SFN), namely Multimedia Broadcast multicast service Single Frequency Network (MBSFN). MBSFN uses a unified frequency to send service data in all cells at the same time, but synchronization between cells must be guaranteed. This method can greatly improve the overall signal-to-noise ratio distribution of the cell, and the spectrum efficiency will also be greatly improved accordingly. eMBMS implements broadcast and multicast of services based on the IP multicast protocol.

[0063] In LTE or enhanced LTE (LTE-Advanced, LTE-A), MBMS has only a broadcast bearer mode, but no multicast bearer mode. In addition, the reception of MBMS services is applicable to UEs in an idle state or a connected state.

[0064] 3GPP R13 introduced the concept of Single Cell Point To Multipoint (SC-PTM), which is based on the MBMS network architecture.

[0065] MBMS introduces new logical channels, including Single Cell-Multicast Control Channel (SC-MCCH) and Single Cell-Multicast Transport Channel (SC-MTCH). SC-MCCH and SC-MTCH are mapped to Downlink Shared Channel (DL-SCH), and further, DL-SCH is mapped to Physical Downlink Shared Channel (PDSCH), where 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.

[0066] MBMS introduces a new type of System Information Block (SIB), namely SIB20. Specifically, the configuration information of SC-MCCH is transmitted through SIB20, and there is only one SC-MCCH in a cell. The configuration information of SC-MCCH includes: the modification period of SC-MCCH, the repetition period of SC-MCCH, and the radio frame and subframe for scheduling SC-MCCH. Further, 1) The boundary of the modification period of SC-MCCH satisfies SFN mod m = 0, where SFN represents the system frame number of the boundary, and m is the modification period of SC-MCCH configured in SIB20 (i.e., sc-mcch-ModificationPeriod). 2) The radio frame for scheduling SC-MCCH satisfies: SFN mod mcch-RepetitionPeriod = mcch-Offset, where SFN represents the system frame number of the radio frame, mcch-RepetitionPeriod represents the repetition period of SC-MCCH, and mcch-Offset represents the offset of SC-MCCH. 3) The subframe for scheduling SC-MCCH is indicated by sc-mcch-Subframe.

[0067] SC-MCCH is scheduled through the Physical Downlink Control Channel (PDCCH). On the one hand, a new Radio Network Temporary Identity (RNTI), namely the Single Cell RNTI (SC-RNTI), is introduced to identify the PDCCH (such as SC-MCCHPDCCH) used to schedule SC-MCCH. Optionally, the SC-RNTI is fixed to FFFC. On the other hand, a new RNTI, namely the Single Cell Notification RNTI (SC-N-RNTI), is introduced to identify the PDCCH (such as the notification PDCCH) used to indicate the change notification of SC-MCCH. Optionally, the SC-N-RNTI is fixed to FFFB; further, one of the 8 bits of 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.

[0068] Specifically, SC-MCCH only transmits one message (i.e., SCPTMConfiguration), which is used to configure the configuration information of SC-PTM. The configuration information of SC-PTM includes: Temporary Mobile Group Identity (TMGI), session id, group RNTI (G-RNTI), discontinuous reception (DRX) configuration information, and SC-PTM service information of neighboring cells. It should be noted that SC-PTM in R13 does not support the robust header compression (ROHC) function.

[0069] The downlink discontinuous reception of SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-SchedulingCycle, and SC-MTCH-SchedulingOffset.

[0070] When [(SFN*10)+subframe number]modulo(SC-MTCH-SchedulingCycle)=SC-MTCH-SchedulingOffset is satisfied, the timer onDurationTimerSCPTM is started;

[0071] When receiving downlink PDCCH scheduling, start the timer drx-InactivityTimerSCPTM;

[0072] Downlink SC-PTM services are received only when the timer onDurationTimerSCPTM or drx-InactivityTimerSCPTM is running.

[0073] SC-PTM service continuity adopts the MBMS service continuity concept based on SIB15, namely "SIB15+MBMSInterestIndication". The service continuity of idle UE is based on the concept of frequency priority.

[0074] In the technical solution of the embodiment of the present application, a new SIB (called the first SIB) is defined. The first SIB includes configuration information of the first MCCH. Here, the first MCCH is the control channel of the MBMS service. In other words, the first SIB is used to configure the configuration information of the control channel of NRMBMS. Optionally, the control channel of NR MBMS can also be called NR MCCH (i.e., the first MCCH).

[0075] Further, the first MCCH is used to carry the first signaling. The embodiment of the present application does not limit the name of the first signaling. For example, the first signaling is signaling A. The first signaling includes configuration information of at least one first MTCH. Here, the first MTCH is a service channel (also called a data channel or a transmission channel) of the MBMS service. The first MTCH is used to transmit MBMS service data (such as service data of NR MBMS). In other words, the first MCCH is used to configure the configuration information of the service channel of NR MBMS. Optionally, the service channel of NR MBMS can also be called NR MTCH (i.e., the first MTCH).

[0076] Specifically, the first signaling is used to configure the service channel of NR MBMS, 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, such as identification information of the service such as TMGI and session id. The scheduling information corresponding to the service channel, such as the RNTI used when the MBMS service data corresponding to the service channel is scheduled, such as G-RNTI, DRX configuration information, etc.

[0077] It should be noted that the transmission of the first MCCH and the first MTCH are both based on PDCCH scheduling. The RNTI used by the PDCCH for scheduling the first MCCH uses a network-wide unique identifier, that is, a fixed value. The RNTI used by the PDCCH for scheduling the first MTCH is configured through the first MCCH.

[0078] It should be noted that the embodiments of the present application do not limit the naming of the first SIB, the first MCCH and the first MTCH. For ease of description, the first SIB may also be referred to as SIB, the first MCCH may also be referred to as MCCH, and the first MTCH may also be referred to as MTCH. The PDCCH for scheduling MCCH (i.e., MCCHPDCCH) and notifying PDCCH are configured through SIB, wherein the DCI carried by MCCH PDCCH is scheduled for transmitting the PDSCH for MCCH (i.e., MCCH PDSCH). Further, M PDCCHs for scheduling MTCH (i.e., MTCH 1PDCCH, MTCH2PDCCH, ..., MTCH M PDCCH) are configured through MCCH, wherein the DCI carried by MTCH n PDCCH is scheduled for transmitting the PDSCH for MTCH n (i.e., MTCH n PDSCH), and n is an integer greater than or equal to 1 and less than or equal to M. MCCH and MTCH are mapped to DL-SCH, and further, DL-SCH is mapped to PDSCH, wherein MCCH and MTCH belong to logical channels, DL-SCH belongs to a transport channel, and PDSCH belongs to a physical channel.

[0079] It should be noted that the MBMS service in the above solution includes but is not limited to multicast service and groupcast service. The embodiment of the present application takes the MBS service as an example for explanation, and the description of "MBS service" can also be replaced by "multicast service" or "groupcast service" or "MBMS service".

[0080] In the NR MBS service, in addition to sending the MBS service in multicast mode, the same cell may also transmit the MBS service to a specific user in unicast mode. For example, if the channel of the user is poor, the MBS service needs to be transmitted to the user in unicast mode. In a cell, there may be several users receiving a certain MBS service at the same time, but the base station sends the MBS service to each user in unicast mode. For example, if there are few users receiving MBS services in the cell, sending MBS services to each user in unicast mode can effectively improve the service transmission efficiency.

[0081] Reference Figure 5For a packet data unit (PDU) session of a certain MBS service, a shared GTP tunnel may be used between the 5G Core network (5GC) and the gNB to transmit the MBS service, that is, both unicast services and MBS services share this GTP tunnel. The gNB sends the MBS service to the multicast group in a multicast manner, and sends the MBS service to a certain UE in a unicast manner. Figure 5 Take UE3 as an example). The multicast group includes one or more UEs ( Figure 5 Take the multicast group including UE1 and UE2 as an example).

[0082] During the transmission of MBS services via multicast, since multiple users receive one MBS service together, different users are located in different beam coverage areas, so how to receive MBS services via beam in multicast needs to be clarified. To this end, the following technical solutions of the embodiments of the present application are proposed.

[0083] Reference Figure 6 , Figure 6 This is a schematic diagram of MBS services transmitted through beams provided in an embodiment of the present application. MBS data 1 is transmitted through 4 beams, MBS data 2 is transmitted through 3 beams, and MBS3 is transmitted through 2 beams. In the embodiment of the present application, the TCI state is used to determine the beam. Different beams correspond to different TCI states. The "TCI state" can be understood as the "beam". Figure 6 In the example, taking MBS data 1 as an example, MBS data 1 is transmitted through 4 PDSCHs, and the 4 PDSCHs (i.e., PDSCH1, PDSCH2, PDSCH3, and PDSCH4) correspond to 4 TCI states (i.e., TCI state 1, TCI state 2, TCI state 3, and TCI state 4) one by one, wherein each of the 4 TCI states corresponds to a beam, and UE1, UE2, UE3, and UE4 are respectively located within the coverage range of a beam, that is, different UEs are under different beam coverage ranges. Considering mobility, the beam where each UE is located changes dynamically. Taking MBS data 2 as an example, UE1 and UE4 are located within the coverage range of the same beam, UE2 is located within the coverage range of another beam, and UE3 is located within another coverage range. Taking MBS data 3 as an example, UE1 and UE4 are located within the coverage range of the same beam, and UE2 and UE3 are located within the coverage range of another beam.

[0084] Figure 7 This is a flow chart of the TCI state management method for MBS services provided in an embodiment of the present application. Figure 1,like Figure 7 As shown, the TCI state management method of the MBS service includes the following steps:

[0085] Step 701: The terminal device receives a first MAC CE sent by a network device, where the first MAC CE is used to activate a first TCI state in a first TCI state list.

[0086] In an embodiment of the present application, the network device may be a base station, such as a gNB.

[0087] In an embodiment of the present application, before the terminal device receives the first MAC CE sent by the network device, the terminal device receives the first configuration information sent by the network device, the first configuration information is used to determine a first TCI state list, the first TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to the TCI state identifier of the MBS service. In an optional manner, the first configuration information is carried in RRC signaling.

[0088] In the above scheme, the first TCI state list may also be called a PDCCH TCI state list, and the PDCCH TCI state list includes at least one PDCCH TCI state identifier. Here, the PDCCH TCI state refers to the TCI state used to receive PDCCH or the TCI state used to determine the receiving beam of PDCCH.

[0089] In the embodiment of the present application, in order to enable the terminal device to distinguish the TCI status identifier of the MBS service and the TCI status identifier of the unicast service, it can be achieved through any one of the two solutions.

[0090] Solution 1: The at least one TCI status identifier is selected from a first number range in a public number range, and a second number range in the public number range is used to determine the TCI status identifier of the unicast service.

[0091] Here, a TCI state identification range (i.e., the first numbering range) is reserved by the protocol or the network side for MBS services. For example, the current TCI state identification range (i.e., the public numbering range) is {0, 1, 2, ..., N}, and the protocol stipulates or the network side reserves a TCI state identification range (i.e., the first numbering range) of {0, 1, 2, ..., k} from this range, which is specifically used for MBS services. Furthermore, the remaining TCI state identification range (i.e., the second numbering range) is {k+1, K+2, K+3, ..., N}, which can be used for unicast services.

[0092] Based on this, the network device can configure a PDCCH TCI state list (ie, a first TCI state list) for MBS services within the first numbering range. Specifically, the network device selects one or more TCI state identifiers within the first numbering range to form the first TCI state list.

[0093] It should be noted that when the network side configures the TCI status identifier of the MBS service, it ensures that the TCI status identifier configured for each terminal device in the multicast group where the MBS service is located is unique in the cell.

[0094] Solution 2: The at least one TCI status identifier is selected from an independent numbering range for the MBS service.

[0095] Here, an independent TCI state identification range (i.e., independent numbering range) is specifically used for MBS services through protocol provisions or network side configuration. The independent numbering range for MBS services and the independent numbering range for unicast services are independent of each other and can be numbered separately. For example: the independent numbering range for MBS services is {0,1,2,...,N1}, and the independent numbering range for unicast services is {0,1,2,...,N2}, and the values ​​of N1 and N2 can be the same or different.

[0096] Based on this, the network device can configure the PDCCH TCI state list (i.e., the first TCI state list) for the MBS service within the independent numbering range for the MBS service. Specifically, the network device selects one or more TCI state identifiers within the independent numbering range for the MBS service to form the first TCI state list.

[0097] Step 702: When the terminal device determines that the first TCI state is the PDCCH TCI state of the MBS service, the terminal device receives the PDCCH of the MBS service based on the first TCI state.

[0098] In an embodiment of the present application, after the terminal device receives the first MAC CE sent by the network device, it needs to be determined whether the first TCI state activated by the first MAC CE is the TCI state of the MBS service or the TCI state of the unicast service, which can be determined in any of the following ways.

[0099] It should be noted that any one of the following methods 1 to 4 can be implemented in combination with the "Scheme 1" in the above scheme. Any one of the following methods 1, 2, and 4 can be implemented in combination with the "Scheme 2" in the above scheme.

[0100] ●Method 1

[0101] The PDSCH where the first MAC CE is located is scheduled through the first DCI. If the first DCI is encrypted through G-RNTI, the terminal device determines that the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service; if the first DCI is encrypted through C-RNTI, the terminal device determines that the first TCI state activated by the first MAC CE is the PDCCH TCI state of the unicast service.

[0102] In one example, the structure of the first MAC CE refers to Figure 8 As shown, the first MAC CE includes a TCI state identifier, and the TCI state identifier is used to determine the activated first TCI state. Furthermore, the first MAC CE also includes a serving cell identifier and a control resource set (Control Resource Set, CORESET) identifier. Among them, the serving cell identifier is used to determine the serving cell where the PDCCH is located, and the CORESET identifier is used to determine the CORESET where the PDCCH is located. If G-RNTI scrambling is used to schedule the DCI of the PDSCH where the first MAC CE is located, the first MAC CE activates the PDCCH TCI state of the MBS service (i.e., the MBS PDCCH TCI state). If C-RNTI scrambling is used to schedule the DCI of the PDSCH where the first MAC CE is located, the first MAC CE activates the PDCCH TCI state of the unicast service (i.e., the unicast PDCCH TCI state).

[0103] ●Method 2

[0104] The first MAC CE is associated with a first LCID, and the terminal device determines, based on the first LCID, whether the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service or the PDCCH TCI state of the unicast service.

[0105] In one example, a new MAC CE is defined as the first MAC CE, and the LCID associated with the first MAC CE is used to distinguish whether the first TCI state activated by the first MAC CE is the TCI state of the MBS service (i.e., the MBS PDCCH TCI state) or the TCI state of the unicast service (i.e., the unicast PDCCH TCI state). For example: if the LCID associated with the first MAC CE is the first LCID, then the first MAC CE activates the PDCCH TCI state of the MBS service (i.e., the MBS PDCCH TCI state). If the LCID associated with the first MAC CE is the second LCID, then the first MAC CE activates the PDCCH TCI state of the unicast service (i.e., the unicast PDCCH TCI state). Here, the structure of defining a new MAC CE can refer to Figure 8 As shown, it can also be Figure 8 There is some difference.

[0106] ●Method 3

[0107] The terminal device determines, based on the TCI state identifier corresponding to the first TCI state, whether the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service or the PDCCH TCI state of the unicast service.

[0108] Here, it should be noted that the TCI status identifier of the MBS service and the TCI status identifier of the unicast service are distinguished (refer to the above-mentioned "Solution 1"). The TCI status identifier can be used to determine whether the corresponding TCI state is the PDCCH TCI state of the MBS service or the PDCCH TCI state of the unicast service.

[0109] In one example, the first number range in the public number range is dedicated to MBS services, the second number range in the public number range is dedicated to unicast services, the first number range and the second number range have no overlapping parts, and if the TCI state identifier of the first TCI state belongs to the first number range, then the first MAC CE activates the PDCCH TCI state of the MBS service (i.e., the MBS PDCCH TCI state). If the TCI state identifier of the first TCI state belongs to the second number range, then the first MAC CE activates the PDCCH TCI state of the unicast service (i.e., the unicast PDCCH TCI state).

[0110] ●Method 4

[0111] The first MAC CE carries the CORESET identifier, refer to Figure 8As shown, the terminal device determines, based on the CORESET identifier, whether the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service or the PDCCH TCI state of the unicast service.

[0112] In one example, an independent CORESET is configured for the PDCCH of the MBS service (distinguished from the CORESET of the PDCCH of the unicast service), and the CORESET identifier is used to distinguish that the activated first TCI state is dedicated to the MBS service. If the CORESET identifier in the first MAC CE is the first CORESET identifier, the first MAC CE activates the PDCCH TCI state of the MBS service (i.e., the MBS PDCCH TCI state). If the CORESET identifier in the first MAC CE is the second CORESET identifier, the first MAC CE activates the PDCCH TCI state of the unicast service (i.e., the unicast PDCCH TCI state).

[0113] Fig. 9 This is a flow chart of the TCI state management method for MBS services provided in an embodiment of the present application. Figure 2 ,like Fig. 9 As shown, the TCI state management method of the MBS service includes the following steps:

[0114] Step 901: The terminal device receives a second MAC CE sent by a network device, where the second MAC CE is used to activate N TCI states in a second TCI state list, where N is a positive integer.

[0115] In an embodiment of the present application, the network device may be a base station, such as a gNB.

[0116] In an embodiment of the present application, before the terminal device receives the second MAC CE sent by the network device, the terminal device receives the second configuration information sent by the network device, the second configuration information is used to determine a second TCI state list, the second TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to the TCI state identifier of the MBS service. In an optional manner, the second configuration information is carried in RRC signaling.

[0117] In the above scheme, the first TCI state list can also be called a PDSCH TCI state list, and the PDSCH TCI state list includes at least one PDSCH TCI state identifier. Here, the PDSCH TCI state refers to the TCI state used to receive PDSCH or the TCI state used to determine the receiving beam of PDSCH.

[0118] In the embodiment of the present application, in order to enable the terminal device to distinguish the TCI status identifier of the MBS service and the TCI status identifier of the unicast service, it can be achieved through any one of the two solutions.

[0119] Solution A: The at least one TCI status identifier is selected from a first number range in a public number range, and a second number range in the public number range is used to determine the TCI status identifier of the unicast service.

[0120] Here, a TCI state identification range (i.e., the first numbering range) is reserved by the protocol or the network side for MBS services. For example, the current TCI state identification range (i.e., the public numbering range) is {0, 1, 2, ..., N}, and the protocol stipulates or the network side reserves a TCI state identification range (i.e., the first numbering range) of {0, 1, 2, ..., k} from this range, which is specifically used for MBS services. Furthermore, the remaining TCI state identification range (i.e., the second numbering range) is {k+1, K+2, K+3, ..., N}, which can be used for unicast services.

[0121] Based on this, the network device can configure a PDSCH TCI state list (ie, a second TCI state list) for MBS services within the first numbering range. Specifically, the network device selects one or more TCI state identifiers within the first numbering range to form a first TCI state list.

[0122] Solution B: The at least one TCI status identifier is selected from an independent numbering range for the MBS service.

[0123] Here, an independent TCI state identification range (i.e., independent numbering range) is specifically used for MBS services through protocol provisions or network side configuration. The independent numbering range for MBS services and the independent numbering range for unicast services are independent of each other and can be numbered separately. For example: the independent numbering range for MBS services is {0,1,2,...,M1}, and the independent numbering range for unicast services is {0,1,2,...,M2}, and the values ​​of M1 and M2 can be the same or different.

[0124] Based on this, the network device can configure the PDSCH TCI state list (i.e., the second TCI state list) for the MBS service within the independent numbering range for the MBS service. Specifically, the network device selects one or more TCI state identifiers within the independent numbering range for the MBS service to form the first TCI state list.

[0125] Step 902: When the terminal device determines that the N TCI states are the PDSCH TCI states of the MBS service, the terminal device receives the PDSCH of the MBS service based on one TCI state among the N TCI states.

[0126] In an embodiment of the present application, after the terminal device receives the second MAC CE sent by the network device, it needs to be clarified how to determine whether the N TCI states activated by the second MAC CE are the TCI states of the MBS service or the TCI states of the unicast service, which can be clarified in any of the following ways.

[0127] It should be noted that any of the following methods I to IV can be implemented in combination with the "Scheme A" in the above scheme. Any of the following methods I, II, and IV can be implemented in combination with the "Scheme B" in the above scheme.

[0128] Method I:

[0129] The PDSCH where the second MAC CE is located is scheduled through the second DCI. If the second DCI is encrypted through G-RNTI, the terminal device determines that the N TCI states activated by the second MAC CE are the PDSCH TCI states of the MBS service; if the second DCI is encrypted through C-RNTI, the terminal device determines that the N TCI states activated by the second MAC CE are the PDSCH TCI states of the unicast service.

[0130] In one example, the structure of the second MAC CE refers to Fig.10As shown, the first MAC CE includes 8(N-1)×8 bits, each bit corresponds to a TCI state identifier, and the value of the bit is used to indicate whether the TCI state indicated by the TCI state identifier corresponding to the comparison is activated. For example, a bit value of 1 indicates that the TCI state indicated by the TCI state identifier corresponding to the comparison is activated (or in an activated state), and a bit value of 0 indicates that the TCI state indicated by the TCI state identifier corresponding to the comparison is not activated (or in a deactivated state). Further, the second MAC CE also includes a reserved (R) bit, a serving cell identifier, and a BWP identifier. Among them, the serving cell identifier is used to determine the serving cell where the PDSCH is located, and the BWP identifier is used to determine the BWP where the PDSCH is located. If G-RNTI scrambling is used to schedule the DCI of the PDSCH where the second MAC CE is located, the second MAC CE activates the PDSCH TCI state of the MBS service (i.e., the MBS PDSCH TCI state). If the C-RNTI scrambles the DCI for scheduling the PDSCH where the second MAC CE is located, the second MAC CE activates the PDSCH TCI state of the unicast service (ie, the unicast PDSCH TCI state).

[0131] Method II:

[0132] The second MAC CE is associated with a second LCID, and the terminal device determines, based on the second LCID, whether the N TCI states activated by the second MAC CE are PDSCH TCI states of MBS services or PDSCH TCI states of unicast services.

[0133] In one example, a new MAC CE is defined as the second MAC CE, and the LCID associated with the second MAC CE is used to distinguish whether the TCI state activated by the second MAC CE is the TCI state of the MBS service (i.e., the MBS PDSCH TCI state) or the TCI state of the unicast service (i.e., the unicast PDSCH TCI state). For example: if the LCID associated with the second MAC CE is the first LCID, then the second MAC CE activates the PDSCH TCI state of the MBS service (i.e., the MBS PDSCH TCI state). If the LCID associated with the second MACCE is the second LCID, then the second MAC CE activates the PDSCH TCI state of the unicast service (i.e., the unicast PDSCH TCI state). Here, the structure of defining the new MAC CE can refer to Fig.10 As shown, it can also be Fig.10 There is some difference.

[0134] Method III:

[0135] The terminal device determines, based on the TCI state identifiers corresponding to the N TCI states, whether the N TCI states activated by the second MAC CE are PDSCH TCI states for MBS services or PDSCH TCI states for unicast services.

[0136] Here, it should be noted that the TCI status identifier of the MBS service and the TCI status identifier of the unicast service are distinguished (refer to the above-mentioned "Scheme A"). The TCI status identifier can be used to determine whether the corresponding TCI state is the PDSCH TCI state of the MBS service or the PDSCH TCI state of the unicast service.

[0137] In one example, the first number range in the public number range is dedicated to MBS services, the second number range in the public number range is dedicated to unicast services, the first number range and the second number range have no overlapping parts, and if the TCI state identifier of the TCI state activated by the second MACCE belongs to the first number range, then the second MAC CE activates the PDCCH TCI state of the MBS service (i.e., the MBS PDCCH TCI state). If the TCI state identifier of the TCI state activated by the second MAC CE belongs to the second number range, then the second MAC CE activates the PDCCH TCI state of the unicast service (i.e., the unicast PDCCH TCI state).

[0138] Method IV:

[0139] The second MAC CE carries a first bit field, and the terminal device determines, based on the value of the first bit field, whether the N TCI states activated by the second MAC CE are the PDSCH TCI states of the MBS service or the PDSCH TCI states of the unicast service.

[0140] In one example, the structure of the second MAC CE refers to Fig.10 As shown, the first bit field can be implemented by the R bit, and the value of the R bit is used to indicate whether the second MAC CE activates the PDSCH TCI state of the MBS service or the PDSCH TCI state of the unicast service. For example: the value of the R bit is 1, indicating that the second MAC CE activates the PDSCH TCI state of the MBS service, and the value of the R bit is 0, indicating that the second MAC CE activates the PDSCH TCI state of the unicast service.

[0141] In an embodiment of the present application, the terminal device receives a first DCI sent by the network device, where the first DCI is used to indicate M TCI states among the N TCI states, where M is an integer greater than or equal to 1 and less than or equal to N, or M is equal to 1; the terminal device receives the PDSCH of the MBS service based on one TCI state among the M TCI states.

[0142] In one example, M is equal to 1. In this case, the terminal device receives the PDSCH of the MBS service based on one TCI state indicated by the first DCI.

[0143] In one example, M is an integer greater than 1, for example, M is equal to 8. Not limited to this, the value of M can also be other values. In this case, the terminal device selects a TCI state from the M TCI states, and receives the PDSCH of the MBS service based on the TCI state. In an optional manner, the terminal device measures M reference signals based on the M TCI states, and selects the one TCI state for receiving the PDSCH from the M TCI states based on the measurement results of the M reference signals, for example, selecting the TCI state corresponding to the reference signal with the best measurement result, to determine the receiving beam of the PDSCH.

[0144] In the above solution, the first DCI is used to schedule PDSCH, that is, the first DCI carries scheduling information of PDSCH. The first DCI also carries indication information for indicating M TCI states among N TCI states.

[0145] In an embodiment of the present application, if the first DCI is encrypted through G-RNTI, the terminal device determines that the M TCI states indicated by the first DCI are the PDSCH TCI states of the MBS service; if the first DCI is encrypted through C-RNTI, the terminal device determines that the M TCI states indicated by the first DCI are the PDSCH TCI states of the unicast service.

[0146] Fig.11 This is a schematic diagram of the structure of the TCI state management device for MBS services provided in an embodiment of the present application. Figure 1 , applied to terminal devices, such as Fig.11 As shown, the TCI state management device of the MBS service includes:

[0147] The receiving unit 1101 is used to receive a first MAC CE sent by a network device, where the first MAC CE is used to activate a first TCI state in a first TCI state list; when it is determined that the first TCI state is the PDCCH TCI state of the MBS service, the PDCCH of the MBS service is received based on the first TCI state.

[0148] In an optional manner, the PDSCH where the first MAC CE is located is scheduled by a first DCI, and the device further includes:

[0149] The determination unit 1102 is used to determine that the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service if the first DCI is encrypted through the G-RNTI; if the first DCI is encrypted through the C-RNTI, determine that the first TCI state activated by the first MAC CE is the PDCCH TCI state of the unicast service.

[0150] In an optional manner, the first MAC CE is associated with an LCID, and the device further includes:

[0151] The determination unit 1102 is used to determine, based on the first LCID, whether the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service or the PDCCH TCI state of the unicast service.

[0152] In an optional manner, the device further includes:

[0153] The determining unit 1102 is configured to determine, based on a TCI state identifier corresponding to the first TCI state, whether the first TCI state activated by the first MACCE is a PDCCH TCI state of an MBS service or a PDCCH TCI state of a unicast service.

[0154] In an optional manner, the first MAC CE carries a CORESET identifier, and the device further includes:

[0155] The determining unit 1102 is configured to determine, based on the CORESET identifier, whether the first TCI state activated by the first MAC CE is a PDCCH TCI state of an MBS service or a PDCCH TCI state of a unicast service.

[0156] In an optional manner, the receiving unit 1101 is further configured to receive first configuration information sent by the network device, where the first configuration information is used to determine a first TCI state list, where the first TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service;

[0157] Among them, the at least one TCI status identifier is selected from a first number range in a public number range, and a second number range in the public number range is used to determine the TCI status identifier of the unicast service.

[0158] In an optional manner, the receiving unit 1101 is further configured to receive first configuration information sent by the network device, where the first configuration information is used to determine a first TCI state list, where the first TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service;

[0159] The at least one TCI status identifier is selected from an independent numbering range for the MBS service.

[0160] Those skilled in the art should understand that the relevant description of the TCI state management device for the MBS service in the embodiment of the present application can be understood by referring to the relevant description of the TCI state management method for the MBS service in the embodiment of the present application.

[0161] Fig.12 This is a schematic diagram of the structure of the TCI state management device for MBS services provided in an embodiment of the present application. Figure 2 , applied to terminal devices, such as Fig.12 As shown, the TCI state management device of the MBS service includes:

[0162] The receiving unit 1201 is used to receive a second MAC CE sent by a network device, where the second MAC CE is used to activate N TCI states in a second TCI state list, where N is a positive integer; when it is determined that the N TCI states are PDSCHHTCI states of the MBS service, based on one TCI state among the N TCI states, the PDSCH of the MBS service is received.

[0163] In an optional manner, the PDSCH where the second MAC CE is located is scheduled by a second DCI, and the device further includes:

[0164] The determination unit 1202 is used to determine that the N TCI states activated by the second MAC CE are the PDSCH TCI states of the MBS service if the second DCI is encrypted through G-RNTI; if the second DCI is encrypted through C-RNTI, determine that the N TCI states activated by the second MAC CE are the PDSCH TCI states of the unicast service.

[0165] In an optional manner, the second MAC CE is associated with a second LCID, and the device further includes:

[0166] The determination unit 1202 is used to determine, based on the second LCID, whether the N TCI states activated by the second MAC CE are PDSCH TCI states of MBS services or PDSCH TCI states of unicast services.

[0167] In an optional manner, the device further includes:

[0168] The determining unit 1202 is configured to determine, based on the TCI state identifiers corresponding to the N TCI states, whether the N TCI states activated by the second MACCE are PDSCH TCI states of the MBS service or PDSCH TCI states of the unicast service.

[0169] In an optional manner, the second MAC CE carries a first bit field, and the device further includes:

[0170] The determination unit 1202 is used to determine, based on the value of the first bit field, whether the N TCI states activated by the second MAC CE are PDSCH TCI states of MBS services or PDSCH TCI states of unicast services.

[0171] In an optional manner, the receiving unit 1201 is further configured to receive second configuration information sent by the network device, where the second configuration information is used to determine a second TCI state list, where the second TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service;

[0172] Among them, the at least one TCI status identifier is selected from a first number range in a public number range, and a second number range in the public number range is used to determine the TCI status identifier of the unicast service.

[0173] In an optional manner, the receiving unit 1201 is further configured to receive second configuration information sent by the network device, where the second configuration information is used to determine a second TCI state list, where the second TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service;

[0174] The at least one TCI status identifier is selected from an independent numbering range for the MBS service.

[0175] In an optional manner, the receiving unit 1201 is also used to receive a first DCI sent by the network device, where the first DCI is used to indicate M TCI states among the N TCI states, where M is an integer greater than or equal to 1 and less than or equal to N, or M is equal to 1; and based on one TCI state among the M TCI states, receive the PDSCH of the MBS service.

[0176] In an optional manner, the device further includes:

[0177] The determination unit 1202 is used to determine that the M TCI states indicated by the first DCI are PDSCH TCI states of the MBS service if the first DCI is encrypted through G-RNTI; if the first DCI is encrypted through C-RNTI, determine that the M TCI states indicated by the first DCI are PDSCH TCI states of the unicast service.

[0178] In an optional manner, the device further includes:

[0179] a measuring unit (not shown in the figure), configured to measure the M reference signals based on the M TCI states;

[0180] The determining unit 1202 is further configured to select the one TCI state for receiving the PDSCH from the M TCI states based on the measurement results of the M reference signals.

[0181] Those skilled in the art should understand that the relevant description of the TCI state management device for the MBS service in the embodiment of the present application can be understood by referring to the relevant description of the TCI state management method for the MBS service in the embodiment of the present application.

[0182] Fig.13 1300 is a schematic structural diagram of a communication device 1300 provided in an embodiment of the present application. The communication device may be a terminal device or a network device. Fig.13 The communication device 1300 shown includes a processor 1310, and the processor 1310 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0183] Alternatively, if Fig.13 As shown, the communication device 1300 may further include a memory 1320. The processor 1310 may call and run a computer program from the memory 1320 to implement the method in the embodiment of the present application.

[0184] The memory 1320 may be a separate device independent of the processor 1310 , or may be integrated into the processor 1310 .

[0185] Alternatively, if Fig.13 As shown, the communication device 1300 may further include a transceiver 1330, and the processor 1310 may control the transceiver 1330 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0186] The transceiver 1330 may include a transmitter and a receiver. The transceiver 1330 may further include an antenna, and the number of antennas may be one or more.

[0187] Optionally, the communication device 1300 may specifically be a network device of an embodiment of the present application, and the communication device 1300 may implement corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0188] Optionally, the communication device 1300 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 1300 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described again for the sake of brevity.

[0189] Fig.14 It is a schematic structural diagram of the chip of an embodiment of the present application. Fig.14 The chip 1400 shown includes a processor 1410, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0190] Alternatively, if Fig.14 As shown, the chip 1400 may further include a memory 1420. The processor 1410 may call and run a computer program from the memory 1420 to implement the method in the embodiment of the present application.

[0191] The memory 1420 may be a separate device independent of the processor 1410 , or may be integrated into the processor 1410 .

[0192] Optionally, the chip 1400 may further include an input interface 1430. The processor 1410 may control the input interface 1430 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0193] Optionally, the chip 1400 may further include an output interface 1440. The processor 1410 may control the output interface 1440 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0194] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0195] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0196] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0197] Fig.15 1 is a schematic block diagram of a communication system 1500 provided in an embodiment of the present application. Fig.15 As shown, the communication system 1500 includes a terminal device 1510 and a network device 1520 .

[0198] Among them, the terminal device 1510 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1520 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0199] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0200] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0201] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0202] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0203] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0204] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0205] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0206] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0207] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0208] The embodiment of the present application also provides a computer program.

[0209] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0210] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0211] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0212] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0213] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0214] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0215] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0216] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0217] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for managing the transmission configuration indication (TCI) state of a multimedia multicast service (MBS) service, the method comprising: The terminal device receives a first media access control control unit MAC CE sent by the network device, where the first MAC CE is used to activate a first TCI state in a first TCI state list; When the terminal device determines that the first TCI state is a physical downlink control channel PDCCH TCI state of the MBS service, receiving the PDCCH of the MBS service based on the first TCI state; The terminal device determines, based on the TCI state identifier corresponding to the first TCI state, whether the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service or the PDCCH TCI state of the unicast service; the TCI state identifier includes the TCI state identifier of the MBS service and the TCI state identifier of the unicast service; the TCI state identifier of the MBS service is selected within the first number range in the public number range; and the TCI state identifier of the unicast service is selected within the second number range in the public number range.

2. The method according to claim 1, wherein: The PDSCH where the first MAC CE is located is scheduled by first downlink control information DCI, and the method further includes: If the first DCI is scrambled by the group radio network temporary identifier G-RNTI, the terminal device determines that the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service; If the first DCI is encrypted by the cell radio network temporary identifier C-RNTI, the terminal device determines that the first TCI state activated by the first MAC CE is the PDCCH TCI state of the unicast service.

3. The method according to claim 1, wherein: The first MAC CE is associated with a first logical channel identifier LCID, and the method further includes: The terminal device determines, based on the first LCID, whether the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service or the PDCCH TCI state of the unicast service.

4. The method according to claim 1, wherein: The first MAC CE carries a control resource set CORESET identifier, and the method further includes: The terminal device determines, based on the CORESET identifier, whether the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service or the PDCCH TCI state of the unicast service.

5. The method according to any one of claims 1 to 4, wherein: The method further comprises: The terminal device receives first configuration information sent by the network device, where the first configuration information is used to determine a first TCI state list, where the first TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service; Among them, the at least one TCI status identifier is selected from a first number range in a public number range, and a second number range in the public number range is used to determine the TCI status identifier of the unicast service.

6. The method according to any one of claims 1 to 4, wherein: The method further comprises: The terminal device receives first configuration information sent by the network device, where the first configuration information is used to determine a first TCI state list, where the first TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service; The at least one TCI status identifier is selected from an independent numbering range for the MBS service.

7. A TCI status management method for MBS service, the method comprising: The terminal device receives a second MAC CE sent by the network device, where the second MAC CE is used to activate N TCI states in the second TCI state list, where N is a positive integer; When the terminal device determines that the N TCI states are physical downlink shared channel PDSCH TCI states of the MBS service, based on one TCI state among the N TCI states, receiving the PDSCH of the MBS service; The terminal device determines whether the N TCI states activated by the second MAC CE are PDSCH TCI states of MBS services or PDSCH TCI states of unicast services based on the TCI state identifiers corresponding to the N TCI states; the TCI state identifier includes the TCI state identifier of the MBS service and the TCI state identifier of the unicast service; the TCI state identifier of the MBS service is selected within the first number range in the public number range; and the TCI state identifier of the unicast service is selected within the second number range in the public number range.

8. The method according to claim 7, wherein: The PDSCH where the second MAC CE is located is scheduled by a second DCI, and the method further includes: If the second DCI is scrambled by G-RNTI, the terminal device determines that the N TCI states activated by the second MAC CE are PDSCH TCI states of the MBS service; If the second DCI is encrypted through C-RNTI, the terminal device determines that the N TCI states activated by the second MAC CE are PDSCH TCI states of unicast services.

9. The method according to claim 7, wherein: The second MAC CE is associated with a second LCID, and the method further includes: The terminal device determines, based on the second LCID, whether the N TCI states activated by the second MAC CE are PDSCH TCI states of MBS services or PDSCH TCI states of unicast services.

10. The method according to claim 7, wherein: The second MAC CE carries a first bit field, and the method further includes: The terminal device determines, based on the value of the first bit field, whether the N TCI states activated by the second MAC CE are the PDSCH TCI states of the MBS service or the PDSCH TCI states of the unicast service.

11. The method according to any one of claims 7 to 10, wherein: The method further comprises: The terminal device receives second configuration information sent by the network device, where the second configuration information is used to determine a second TCI state list, where the second TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service; Among them, the at least one TCI status identifier is selected from a first number range in a public number range, and a second number range in the public number range is used to determine the TCI status identifier of the unicast service.

12. The method according to any one of claims 7 to 10, wherein: The method further comprises: The terminal device receives second configuration information sent by the network device, where the second configuration information is used to determine a second TCI state list, where the second TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service; The at least one TCI status identifier is selected from an independent numbering range for the MBS service.

13. The method according to any one of claims 7 to 10, wherein: The receiving a PDSCH of the MBS service based on a TCI state among the N TCI states includes: The terminal device receives a first DCI sent by the network device, where the first DCI is used to indicate M TCI states among the N TCI states, where M is an integer greater than or equal to 1 and less than or equal to N, or M is equal to 1; The terminal device receives the PDSCH of the MBS service based on one TCI state among the M TCI states.

14. The method according to claim 13, wherein: The method further comprises: If the first DCI is scrambled by G-RNTI, the terminal device determines that the M TCI states indicated by the first DCI are PDSCH TCI states of the MBS service; If the first DCI is encrypted through C-RNTI, the terminal device determines that the M TCI states indicated by the first DCI are PDSCH TCI states of unicast services.

15. The method according to claim 13, wherein: The method further comprises: The terminal device measures M reference signals based on the M TCI states, and selects the one TCI state for receiving PDSCH from the M TCI states based on the measurement results of the M reference signals.

16. A TCI status management device for MBS service, the device comprising: a receiving unit, configured to receive a first MAC CE sent by a network device, where the first MAC CE is used to activate a first TCI state in a first TCI state list; and when determining that the first TCI state is a PDCCH TCI state of an MBS service, receiving a PDCCH of the MBS service based on the first TCI state; A determination unit is used to determine whether the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service or the PDCCH TCI state of the unicast service based on the TCI state identifier corresponding to the first TCI state; the TCI state identifier includes the TCI state identifier of the MBS service and the TCI state identifier of the unicast service; the TCI state identifier of the MBS service is selected from a first number range in a public number range; and the TCI state identifier of the unicast service is selected from a second number range in the public number range.

17. The device according to claim 16, wherein: The PDSCH where the first MAC CE is located is scheduled by a first DCI, and the device further includes: A determination unit is used to determine that if the first DCI is encrypted through G-RNTI, then the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service; if the first DCI is encrypted through C-RNTI, then the first TCI state activated by the first MACCE is the PDCCH TCI state of the unicast service.

18. The device according to claim 16, wherein: The first MAC CE is associated with an LCID, and the device further includes: A determination unit is used to determine, based on the first LCID, whether the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service or the PDCCH TCI state of the unicast service.

19. The device according to claim 16, wherein: The first MAC CE carries a CORESET identifier, and the device further includes: A determining unit is used to determine, based on the CORESET identifier, whether the first TCI state activated by the first MAC CE is the PDCCH TCI state of the MBS service or the PDCCH TCI state of the unicast service.

20. The device according to any one of claims 16 to 19, wherein: The receiving unit is further configured to receive first configuration information sent by the network device, where the first configuration information is used to determine a first TCI state list, where the first TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service; Among them, the at least one TCI status identifier is selected from a first number range in a public number range, and a second number range in the public number range is used to determine the TCI status identifier of the unicast service.

21. The device according to any one of claims 16 to 19, wherein: The receiving unit is further configured to receive first configuration information sent by the network device, where the first configuration information is used to determine a first TCI state list, where the first TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service; The at least one TCI status identifier is selected from an independent numbering range for the MBS service.

22. A TCI status management device for MBS service, the device comprising: a receiving unit, configured to receive a second MAC CE sent by a network device, where the second MAC CE is used to activate N TCI states in a second TCI state list, where N is a positive integer; and when it is determined that the N TCI states are PDSCH TCI states of the MBS service, receiving the PDSCH of the MBS service based on one TCI state among the N TCI states; A determination unit is used to determine whether the N TCI states activated by the second MAC CE are PDSCH TCI states of MBS services or PDSCH TCI states of unicast services based on TCI state identifiers corresponding to the N TCI states; the TCI state identifier includes the TCI state identifier of the MBS service and the TCI state identifier of the unicast service; the TCI state identifier of the MBS service is selected from a first number range in a public number range; and the TCI state identifier of the unicast service is selected from a second number range in the public number range.

23. The device according to claim 22, wherein: The PDSCH where the second MAC CE is located is scheduled by a second DCI, and the device further includes: A determination unit is used to determine that if the second DCI is encrypted through G-RNTI, the N TCI states activated by the second MAC CE are the PDSCH TCI states of the MBS service; if the second DCI is encrypted through C-RNTI, the N TCI states activated by the second MAC CE are the PDSCH TCI states of the unicast service.

24. The device according to claim 22, wherein: The second MAC CE is associated with a second LCID, and the device further includes: A determination unit is used to determine, based on the second LCID, whether the N TCI states activated by the second MAC CE are PDSCH TCI states of MBS services or PDSCH TCI states of unicast services.

25. The device according to claim 22, wherein: The second MAC CE carries a first bit field, and the device further includes: A determination unit is used to determine, based on the value of the first bit field, whether the N TCI states activated by the second MAC CE are PDSCH TCI states of MBS services or PDSCH TCI states of unicast services.

26. The device according to any one of claims 22 to 25, wherein: The receiving unit is further configured to receive second configuration information sent by the network device, where the second configuration information is used to determine a second TCI state list, where the second TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service; Among them, the at least one TCI status identifier is selected from a first number range in a public number range, and a second number range in the public number range is used to determine the TCI status identifier of the unicast service.

27. The device according to any one of claims 22 to 25, wherein: The receiving unit is further configured to receive second configuration information sent by the network device, where the second configuration information is used to determine a second TCI state list, where the second TCI state list includes at least one TCI state identifier, and the at least one TCI state identifier belongs to a TCI state identifier of an MBS service; The at least one TCI status identifier is selected from an independent numbering range for the MBS service.

28. The device according to any one of claims 22 to 25, wherein: The receiving unit is also used to receive a first DCI sent by the network device, where the first DCI is used to indicate M TCI states among the N TCI states, where M is an integer greater than or equal to 1 and less than or equal to N, or M is equal to 1; and based on one TCI state among the M TCI states, receive the PDSCH of the MBS service.

29. The device according to claim 28, wherein The device also includes: A determination unit is used to determine that if the first DCI is encrypted through G-RNTI, the M TCI states indicated by the first DCI are PDSCH TCI states of MBS services; if the first DCI is encrypted through C-RNTI, the M TCI states indicated by the first DCI are PDSCH TCI states of unicast services.

30. The device according to claim 28, wherein The device also includes: a measuring unit, configured to measure M reference signals based on the M TCI states; The determining unit is further configured to select the one TCI state for receiving the PDSCH from the M TCI states based on the measurement results of the M reference signals.

31. A terminal device, comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 6, or the method according to any one of claims 7 to 15.

32. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 6, or a method as claimed in any one of claims 7 to 15.

33. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 6, or the method according to any one of claims 7 to 15.

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