CN117063495A

CN117063495A - Method and device for determining transmission mode, terminal equipment and network equipment

Info

Publication number: CN117063495A
Application number: CN202180095849.XA
Authority: CN
Inventors: 王淑坤
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2023-11-14
Also published as: WO2023272619A1

Abstract

The embodiment of the application provides a method and a device for determining a transmission mode, terminal equipment and network equipment, wherein the method comprises the following steps: the method comprises the steps that a first terminal device receives a first signaling sent by a network device, wherein the first signaling is used for determining transmission modes of a plurality of terminal devices in an MBS group, and the transmission modes are a PTP mode or a PTM mode; wherein the plurality of terminal devices includes the first terminal device; the first terminal equipment determines a transmission mode of the first terminal equipment based on the first signaling, and receives a first MBS service according to the transmission mode of the first terminal equipment.

Description

Method and device for determining transmission mode, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to a method and a device for determining a transmission mode, terminal equipment and network equipment.

Background

In a New Radio (NR) system, a multicast broadcast service (Multicast Broadcast Service, MBS) service of a multicast type is supported. The terminal device receives the multicast type MBS service in a radio resource control (Radio Resource Control, RRC) connected state.

For multicast MBS services, the terminal device may receive the multicast MBS services in a Point-To-MultiPoint (PTM) manner or in a Point-To-Point (PTP) manner. In some scenarios, there is a change in the transmission mode of the MBS service (i.e. the mode in which the terminal device receives the MBS service), and how the network device informs the terminal device about the transmission mode of the MBS service is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a method and a device for determining a transmission mode, terminal equipment, network equipment, a chip, a computer readable storage medium, a computer program product and a computer program.

The method for determining the transmission mode provided by the embodiment of the application comprises the following steps:

the method comprises the steps that a first terminal device receives a first signaling sent by a network device, wherein the first signaling is used for determining transmission modes of a plurality of terminal devices in an MBS group, and the transmission modes are a PTP mode or a PTM mode; wherein the plurality of terminal devices includes the first terminal device;

the first terminal equipment determines a transmission mode of the first terminal equipment based on the first signaling, and receives a first MBS service according to the transmission mode of the first terminal equipment.

the network equipment sends a first signaling, wherein the first signaling is used for determining transmission modes of a plurality of terminal equipment in the MBS group, and the transmission modes are PTP modes or PTM modes.

The device for determining the transmission mode provided by the embodiment of the application is applied to the first terminal equipment, and comprises the following components:

a receiving unit, configured to receive a first signaling sent by a network device, where the first signaling is used to determine a transmission mode of a plurality of terminal devices in a multicast broadcast service MBS group, where the transmission mode is a point-to-point PTP mode or a point-to-multipoint PTM mode; wherein the plurality of terminal devices includes the first terminal device;

a determining unit, configured to determine a transmission mode of the first terminal device based on the first signaling;

the receiving unit is further configured to receive a first MBS service according to the transmission mode of the first terminal device.

The device for determining the transmission mode provided by the embodiment of the application is applied to network equipment, and comprises the following components:

a sending unit, configured to send a first signaling, where the first signaling is used to determine a transmission mode of multiple terminal devices in an MBS group, where the transmission mode is a PTP mode or a PTM mode.

The terminal equipment provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method for determining the transmission mode.

The network equipment provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method for determining the transmission mode.

The chip provided by the embodiment of the application is used for realizing the method for determining the transmission mode.

Specifically, the chip includes: and a processor for calling and running the computer program from the memory, so that the device mounted with the chip executes the above-mentioned method for determining the transmission mode.

The computer readable storage medium provided by the embodiment of the application is used for storing a computer program, and the computer program enables a computer to execute the method for determining the transmission mode.

The computer program product provided by the embodiment of the application comprises computer program instructions, and the computer program instructions enable a computer to execute the method for determining the transmission mode.

The computer program provided by the embodiment of the application, when running on a computer, causes the computer to execute the method for determining the transmission mode.

Through the technical scheme, the network equipment indicates the transmission mode of a plurality of terminal equipment in the MBS group through the first signaling, wherein the transmission mode is a PTP mode or a PTM mode, the scheme of indicating the transmission mode for the group (namely the MBS group) is realized, the transmission mode is not required to be independently indicated for each terminal equipment, and the purpose of saving signaling is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present application;

fig. 2 is a schematic diagram of a protocol stack corresponding to a PTM mode and a PTP mode in an embodiment of the present application;

fig. 3 is a schematic diagram of MBS service transmission according to PTM mode and PTP mode provided in the embodiment of the present application;

fig. 4 is a flow chart of a method for determining a transmission mode according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a first mapping relationship provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of a second mapping relationship provided by an embodiment of the present application;

fig. 7 is a schematic diagram one of a MAC CE provided by an embodiment of the present application;

fig. 8 is a schematic diagram two of a MAC CE provided by an embodiment of the present application;

fig. 9 is a schematic diagram of the structural components of a determining device for a transmission mode according to an embodiment of the present application;

fig. 10 is a schematic diagram ii of the structural composition of the determining device for a transmission mode according to the embodiment of the present application;

fig. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 12 is a schematic block diagram of a chip of an embodiment of the application;

fig. 13 is a schematic block diagram of a communication system provided in an embodiment of the present application.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

As shown in fig. 1, communication system 100 may include a terminal device 110 and a network device 120. Network device 120 may communicate with terminal device 110 over the air interface. Multi-service transmission is supported between terminal device 110 and network device 120.

It should be understood that embodiments of the present application are illustrated by way of example only with respect to communication system 100, and embodiments of the present application are not limited thereto. That is, the technical solution of the embodiment of the present application may be applied to various communication systems, for example: long term evolution (Long Term Evolution, LTE) systems, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), internet of things (Internet of Things, ioT) systems, narrowband internet of things (Narrow Band Internet of Things, NB-IoT) systems, enhanced Machine-type-Type Communications (eMTC) systems, 5G communication systems (also known as New Radio (NR) communication systems), or future communication systems, etc.

In the communication system 100 shown in fig. 1, the network device 120 may be an access network device in communication with the terminal device 110. The access network device may provide communication coverage for a particular geographic area and may communicate with terminal devices 110 (e.g., UEs) located within the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a long term evolution (Long Term Evolution, LTE) system, or a next generation radio access network (Next Generation Radio Access Network, NG RAN) device, or a base station (gNB) in a NR system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 may be a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

Terminal device 110 may be any terminal device including, but not limited to, a terminal device that employs a wired or wireless connection with network device 120 or other terminal devices.

For example, the terminal device 110 may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, an IoT device, a satellite handset, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handset with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolution network, etc.

The terminal Device 110 may be used for Device-to-Device (D2D) communication.

The wireless communication system 100 may further comprise a core network device 130 in communication with the base station, which core network device 130 may be a 5G core,5gc device, e.g. an access and mobility management function (Access and Mobility Management Function, AMF), further e.g. an authentication server function (Authentication Server Function, AUSF), further e.g. a user plane function (User Plane Function, UPF), further e.g. a session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example a session management function+a data gateway (Session Management Function + Core Packet Gateway, smf+pgw-C) device of the core network. It should be appreciated that SMF+PGW-C may perform the functions performed by both SMF and PGW-C. In the network evolution process, the core network device may also call other names, or form new network entities by dividing the functions of the core network, which is not limited in this embodiment of the present application.

Communication may also be achieved by establishing connections between various functional units in the communication system 100 through a next generation Network (NG) interface.

For example, the terminal device establishes an air interface connection with the access network device through an NR interface, and is used for transmitting user plane data and control plane signaling; the terminal equipment can establish control plane signaling connection with AMF through NG interface 1 (N1 for short); an access network device, such as a next generation radio access base station (gNB), can establish a user plane data connection with a UPF through an NG interface 3 (N3 for short); the access network equipment can establish control plane signaling connection with AMF through NG interface 2 (N2 for short); the UPF can establish control plane signaling connection with the SMF through an NG interface 4 (N4 for short); the UPF can interact user plane data with the data network through an NG interface 6 (N6 for short); the AMF may establish a control plane signaling connection with the SMF through NG interface 11 (N11 for short); the SMF may establish a control plane signaling connection with the PCF via NG interface 7 (N7 for short).

Fig. 1 exemplarily illustrates one base station, one core network device, and two terminal devices, alternatively, the wireless communication system 100 may include a plurality of base station devices and each base station may include other number of terminal devices within a coverage area, which is not limited by the embodiment of the present application.

It should be noted that fig. 1 is only an exemplary system to which the present application is applicable, and of course, the method shown in the embodiment of the present application may be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. It should also be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B. It should also be understood that "corresponding" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, may mean that there is an association between the two, and may also be a relationship between an instruction and an indicated, configured, or the like. It should also be understood that "predefined" or "predefined rules" mentioned in the embodiments of the present application may be implemented by pre-storing corresponding codes, tables or other manners in which related information may be indicated in devices (including, for example, terminal devices and network devices), and the present application is not limited to the specific implementation thereof. Such as predefined may refer to what is defined in the protocol. It should be further understood that, in the embodiment of the present application, the "protocol" may refer to a standard protocol in the field of communications, and may include, for example, an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited by the present application.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following description describes related technologies of the embodiments of the present application, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as alternatives, which all belong to the protection scope of the embodiments of the present application.

With the pursuit of speed, delay, high-speed mobility and energy efficiency of people and the diversity and complexity of future life business, the third generation of the combinationPartner program (3) ^rd Generation Partnership Project,3 GPP) international standards organization began developing 5G. The main application scenario of 5G is: enhanced mobile Ultra-wideband (enhanced Mobile Broadband, emmbb), low latency high reliability communication (URLLC), large-scale Machine-based communication (mctc).

On the one hand, embbs still target users to obtain multimedia content, services and data, and their demand is growing very rapidly. On the other hand, since an eMBB may be deployed in different scenarios, such as indoors, urban, rural, etc., its capabilities and requirements are also quite different, so that detailed analysis must be performed in connection with a specific deployment scenario, not in general. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety guarantee and the like. Typical characteristics of mctc include: high connection density, small data volume, delay insensitive traffic, low cost and long service life of the module, etc.

At early deployment of NRs, full NR coverage is difficult to acquire, so typical network coverage is wide area LTE coverage and island coverage mode of NRs. And a large amount of LTE is deployed below 6GHz, and the frequency spectrum below 6GHz which can be used for 5G is few. NR must study spectral applications above 6GHz while high-band coverage is limited and signal fading is fast. Meanwhile, in order to protect the mobile operators from early investment in LTE, a working mode of tight coupling (tight interworking) between LTE and NR is proposed.

RRC state

5G for the purposes of reducing air interface signaling and fast recovery of radio connections, fast recovery of data traffic, a new radio resource control (Radio Resource Control, RRC) state, namely an RRC INACTIVE (RRC_INACTIVE) state, is defined. This state is different from the RRC IDLE (rrc_idle) state and the RRC ACTIVE (rrc_active) state. Wherein,

1) Rrc_idle state (simply referred to as IDLE state): mobility is UE-based cell selection reselection, paging is initiated by a Core Network (CN), and paging areas are configured by the CN. The base station side has no UE context and no RRC connection.

2) Rrc_connected state (CONNECTED state for short): there is an RRC connection and UE contexts on the base station side and UE side. The network side knows that the location of the UE is cell specific. Mobility is network-side controlled mobility. Unicast data may be transmitted between the UE and the base station.

3) Rrc_inactive state (simply referred to as INACTIVE state): mobility is cell selection reselection based on UE, there is a connection between CN-NRs, UE context exists on a certain base station, paging is triggered by RAN, paging area based on RAN is managed by RAN, network side knows UE location is based on paging area level of RAN.

Multimedia broadcast multicast service (Multimedia Broadcast Multicast Service, MBMS)

MBMS is a technology for transmitting data from one data source to a plurality of terminal equipments through a shared network resource, which can effectively utilize the network resource while providing a multimedia service, and realize broadcasting and multicasting of a multimedia service of a higher rate (e.g., 256 kbps).

Due to the low MBMS spectrum efficiency, it is not sufficient to effectively carry and support the operation of the mobile tv type service. In LTE, 3GPP has therefore explicitly proposed to enhance the support capability for the downlink high speed MBMS service and to determine the design requirements for the physical layer and the air interface.

The 3gpp R9 introduces evolved MBMS (eMBMS) into LTE. eMBMS proposes the concept of a single frequency network (Single Frequency Network, SFN), i.e. a multimedia broadcast multicast service single frequency network (Multimedia Broadcast multicast service Single Frequency Network, MBSFN), wherein the MBSFN uses a unified frequency to simultaneously transmit traffic data in all cells, but synchronization between the cells is guaranteed. The method can greatly improve the overall signal-to-noise ratio distribution of the cell, and the frequency spectrum efficiency can be correspondingly and greatly improved. eMBMS implements broadcast and multicast of services based on IP multicast protocols.

In LTE or LTE-Advanced (LTE-a), MBMS has only a broadcast bearer mode and no multicast bearer mode. In addition, the reception of the MBMS service is applicable to terminal devices in an idle state or a connected state.

A single cell point-to-multipoint (Single Cell Point To Multiploint, SC-PTM) concept is introduced in 3gpp r13, SC-PTM being based on the MBMS network architecture.

MBMS introduces new logical channels including Single Cell multicast control channel (SC-MCCH) and Single Cell multicast transport channel (SC-MTCH) and Single Cell-Multicast Transport Channel. The SC-MCCH and SC-MTCH are mapped onto a Downlink-Shared Channel (DL-SCH), and further, the DL-SCH is mapped onto a physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH), wherein the SC-MCCH and SC-MTCH belong to a logical Channel, the DL-SCH belongs to a transport Channel, and the PDSCH belongs to a physical Channel. The SC-MCCH and SC-MTCH do not support hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) operation.

MBMS introduces a new system information block (System Information Block, SIB) type, SIB20. Specifically, the configuration information of the SC-MCCH is transmitted through the SIB20, and one cell has only one SC-MCCH. The configuration information of the SC-MCCH comprises: the modification period of the SC-MCCH, the repetition period of the SC-MCCH, the radio frame and subframe for scheduling the SC-MCCH and other information. Further, 1) the boundary of the modification period of the SC-MCCH satisfies SFN mod m=0, where SFN represents a system frame number of the boundary, and m is a modification period (i.e., SC-MCCH-modification period) of the SC-MCCH configured in SIB20. 2) The radio frame of the scheduling SC-MCCH meets the following conditions: SFN mod MCCH-repetition period = MCCH-Offset, where SFN represents the system frame number of the radio frame, MCCH-repetition period represents the repetition period of the SC-MCCH, and MCCH-Offset represents the Offset of the SC-MCCH. 3) The subframes of the scheduling SC-MCCH are indicated by SC-MCCH-Subframe.

The SC-MCCH is scheduled through a physical downlink control channel (Physical Downlink Control Channel, PDCCH). In one aspect, a new radio network temporary identity (Radio Network Tempory Identity, RNTI), i.e., single Cell RNTI (SC-RNTI), is introduced to identify a PDCCH (e.g., SC-MCCH PDCCH) for scheduling the SC-MCCH, optionally with the SC-RNTI fixed value FFFC. On the other hand, a new RNTI, i.e., a single cell notification RNTI (Single Cell Notification RNTI, SC-N-RNTI) is introduced to identify a PDCCH (e.g., notification PDCCH) for indicating a change notification of the SC-MCCH, optionally, the SC-N-RNTI is fixed to a value of FFFB; further, the change notification may be indicated with one bit of 8 bits (bits) of DCI 1C. In LTE, the configuration information of SC-PTM is based on the SC-MCCH configured by SIB20, and then SC-MCCH configures SC-MTCH for transmitting service data.

Specifically, the SC-MCCH transmits only one message (i.e., scptm configuration) for configuring configuration information of the SC-PTM. The configuration information of the SC-PTM comprises: temporary mobile Group identity (Temporary Mobile Group Identity, TMGI), session identity (session id), group RNTI (G-RNTI), discontinuous reception (Discontinuous Reception, DRX) configuration information, SC-PTM service information of neighbor cells, and the like. Note that SC-PTM in R13 does not support the robust header compression (Robust Header Compression, ROHC) function.

The downlink discontinuous reception of the SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-scheduling cycle, and SC-MTCH-scheduling offset.

When [ (SFN 10) +subframe number ] module (SC-MTCH-scheduling cycle) =sc-MTCH-scheduling offset is satisfied, a timer ondurationtimerscpm is started;

when receiving downlink PDCCH scheduling, starting a timer drx-InactivityTimerSCPTM;

the downstream SC-PTM service is received only when the timer onduration timerscpm or drx-incaactyitimerscpm is running.

The SC-PTM service continuity adopts the MBMS service continuity concept based on SIB15, namely a mode of SIB15 and MBMSInterestindication. The traffic continuity of the terminal device in idle state is based on the concept of frequency priority.

Although the above-described scheme is described by taking the MBMS service as an example, the technical scheme of the embodiment of the present application is not limited thereto. The embodiment of the application is illustrated by taking MBS service as an example, and the description of the MBS service can be replaced by the MBMS service.

In NR systems, many scenarios require support of multicast type and broadcast type traffic demands, such as in the internet of vehicles, industrial internet, etc. It is necessary to introduce multicast type and broadcast type MBS services in the NR. It should be noted that, the multicast type MBS service refers to an MBS service transmitted through a multicast manner. The broadcast type MBS service refers to an MBS service transmitted through a broadcast manner.

In the NR system, for the multicast type MBS service, the MBS service is addressed to all terminal equipments in a certain group. The terminal equipment receives the multicast MBS service in the RRC connection state, and the terminal equipment can receive the multicast MBS service data in the PTM mode or the PTP mode. Referring to fig. 2, the MBS service data of the ptm mode scrambles corresponding scheduling information through a G-RNTI configured by a network side, and the MBS service data of the PTP mode scrambles corresponding scheduling information through a C-RNTI.

For multicast type MBS service, after receiving the MBS service issued by the core network from the shared tunnel (tunnel), the base station may issue the MBS service to all terminal devices in a group through an air interface. Here, the base station may issue the MBS service to all terminal equipments in a group by PTP and/or PTM. For example: a group comprises a terminal device 1, a terminal device 2 and a terminal device 3, wherein the base station can issue MBS service to the terminal device 1 in a PTP mode, issue MBS service to the terminal device 2 in a PTP mode, and issue MBS service to the terminal device 3 in a PTP mode; or the base station can issue MBS business to the terminal equipment 1 in a PTP mode, and issue MBS business to the terminal equipment 2 and the terminal equipment 3 in a PTM mode; or, the base station may send the MBS service to the terminal device 1, the terminal device 2 and the terminal device 3 in the PTM mode. Referring to fig. 3, a shared GTP tunnel (Shared GTP tunnel) is used between the core network and the base station to transmit MBS services, i.e., both PTM-mode MBS services and PTP-mode MBS services are shared with the GTP tunnel. The base station transmits MBS service data to the UE1 and the UE2 according to the PTM mode, and transmits MBS service data to the UE3 according to the PTP mode.

In general, a terminal device receives an MBS service through a PTM mode, but when the signal quality of the terminal device is poor or there are few users receiving the MBS service in a cell, a network device decides to send the MBS service to the terminal device through a PTP mode, and correspondingly, the terminal device receives the MBS service sent by the network device through a PTP mode. Meanwhile, for the purpose of terminal equipment energy saving, the network equipment informs the terminal equipment to deactivate the PTM mode, and after the terminal equipment deactivates the PTM mode, the network equipment stops monitoring the scheduling information of the G-RNTI scrambled MBS service, and further stops receiving the MBS service of the PTM mode. How the network device informs the terminal device about the transmission mode of the MBS service is a problem to be solved. For this reason, the following technical solutions of the embodiments of the present application are provided.

In order to facilitate understanding of the technical solution of the embodiments of the present application, the technical solution of the present application is described in detail below through specific embodiments. The above related technologies may be optionally combined with the technical solutions of the embodiments of the present application, which all belong to the protection scope of the embodiments of the present application. Embodiments of the present application include at least some of the following.

In the embodiment of the present application, the link corresponding to the "PTP mode" may be referred to as a "PTP link", and the link corresponding to the "PTM mode" may be referred to as a "PTM link".

Fig. 4 is a flow chart of a method for determining a transmission mode according to an embodiment of the present application, as shown in fig. 4, where the method for determining a transmission mode includes the following steps:

step 401: the method comprises the steps that network equipment sends a first signaling, and first terminal equipment receives the first signaling sent by the network equipment, wherein the first signaling is used for determining transmission modes of a plurality of terminal equipment in a multicast broadcast service MBS group, and the transmission modes are a point-to-point PTP mode or a point-to-multipoint PTM mode; wherein the plurality of terminal devices includes the first terminal device.

Step 402: the first terminal equipment determines a transmission mode of the first terminal equipment based on the first signaling, and receives a first MBS service according to the transmission mode of the first terminal equipment.

In the embodiment of the present application, the network device may be, but is not limited to, a base station.

In the embodiment of the present application, the first signaling may also be referred to as a transmission mode activation/deactivation command. As an example, the first signaling may be referred to as a PTM activation/deactivation command for deactivating the PTM mode and/or activating the PTM mode. As an example, the first signaling may be referred to as a PTP activation deactivation command for deactivating and/or activating the PTP mode.

In the embodiment of the present application, the first signaling is used to indicate a transmission mode of each terminal device in an MBS group corresponding to the first MBS service. Or, the first signaling is configured to indicate a transmission mode of an MBS group corresponding to at least one MBS service, where the at least one MBS service includes the first MBS service, and the transmission mode of the MBS group is used to determine a transmission mode of all terminal devices in the MBS group. This is described below.

Scheme one

In the embodiment of the present application, the first signaling is used to indicate a transmission mode of each terminal device in an MBS group corresponding to the first MBS service. Here, the network device may indicate transmission manners of the plurality of terminal devices through the first signaling, respectively, and the transmission manners of the plurality of terminal devices may be different.

In some optional embodiments, the first signaling carries first information, where the first information is a first bitmap, the first bitmap includes a plurality of bits, the plurality of bits and a plurality of terminal devices in an MBS group corresponding to the first MBS service have a first correspondence, and a value of each bit in the plurality of bits is used to indicate a transmission mode of the terminal device corresponding to the bit.

As an example, the MBS group corresponding to the first MBS service includes 4 terminal apparatuses, namely terminal apparatus 1, terminal apparatus 2, terminal apparatus 3 and terminal apparatus 4. The first bitmap includes 4 bits, and the 4 bits in the first bitmap have a first correspondence with 4 terminal devices in the MBS group, where the first correspondence may be a one-to-one correspondence. The value of the bit is used to indicate the transmission mode of the terminal device corresponding to the bit, for example: the value of the bit is 1 (or 0) to indicate that the transmission mode of the terminal device corresponding to the bit is PTP mode, and the value of the bit is 0 (or 1) to indicate that the transmission mode of the terminal device corresponding to the bit is PTM mode. In other words, the value of the bit is 1 (or 0) to indicate that the terminal device corresponding to the bit deactivates the PTM mode, and the value of the bit is 0 (or 1) to indicate that the terminal device corresponding to the bit activates the PTM mode. In other words, the value of the bit is 1 (or 0) to instruct the terminal device corresponding to the bit to activate the PTP mode, and the value of the bit is 0 (or 1) to instruct the terminal device corresponding to the bit to deactivate the PTP mode.

In some optional embodiments, the first correspondence is configured through RRC signaling; or, the first corresponding relation is agreed by a protocol.

In some optional embodiments, the plurality of bits are in one-to-one correspondence with the plurality of terminal devices in the order from low to high, and in the order from low to high; or the plurality of bits are in one-to-one correspondence with the plurality of terminal devices in the order from high to low and in the order from small to large.

As an example, referring to fig. 5, the mbs group includes 4 terminal apparatuses, namely terminal apparatus 1, terminal apparatus 2, terminal apparatus 3 and terminal apparatus 4, respectively, wherein the index of terminal apparatus 1 is 1, the index of terminal apparatus 2 is 2, the index of terminal apparatus 3 is 3, and the index of terminal apparatus 4 is 4. The first bit map includes 4 bits, and the order of 4 bits from low order to high order corresponds to 4 terminal devices one by one in the order of index from small to large. Assuming that the bit value of 1 indicates that the transmission mode of the terminal device corresponding to the bit is PTP mode, and the bit value of 0 indicates that the transmission mode of the terminal device corresponding to the bit is PTM mode, then the transmission modes of the terminal device 1 and the terminal device 4 are PTP mode, and the transmission modes of the terminal device 2 and the terminal device 3 are PTM mode.

Based on the above scheme, for a first terminal device, the first terminal device determines that the first terminal device corresponds to a first bit in the first bit map based on an index of the first terminal device and the first correspondence; and the first terminal equipment determines the transmission mode of the first terminal equipment based on the value of the first bit. Still taking fig. 5 as an example, the first terminal device is the terminal device 1, the terminal device 1 determines, based on the index and the first correspondence, the lowest bit of the 4 bits corresponding to the terminal device 1, and according to the value 1 of the bit, it can be determined that the transmission mode of the terminal device 1 is the PTP mode.

In the above scheme, the index of the first terminal device is configured through RRC signaling.

In the embodiment of the present application, the first signaling is first downlink Control information (Downlink Control Information, DCI) or a first medium access Control (Media Access Control, MAC) Control Element (CE). This is described below.

1) The first signaling is a first DCI.

In the embodiment of the present application, when the first signaling is first DCI, the first DCI is scrambled through a G-RNTI.

In some alternative embodiments, the G-RNTI is a G-RNTI used for MBS service scheduling. Here, the G-RNTI is used to scramble scheduling information of the MBS service.

In some alternative embodiments, the G-RNTI is a G-RNTI dedicated to the transmission mode indication. Here, the G-RNTI is a newly defined G-RNTI for a transmission mode indication, which is dedicated to scrambling a transmission mode indication DCI, where the transmission mode indication DCI is the first DCI, and the transmission mode indication DCI may also be referred to as a PTM activation/deactivation DCI or a PTP activation/deactivation DCI. As an example, the G-RNTI dedicated to the transmission scheme indication may also be referred to as an N-G-RNTI, and the name of the G-RNTI dedicated to the transmission scheme indication is not limited in the embodiment of the present application.

It should be noted that, in the case where the G-RNTI is a G-RNTI for MBS service scheduling, one G-RNTI may correspond to one MBS service (i.e., different MBS services may correspond to different G-RNTIs), or one G-RNTI may correspond to multiple MBS services (i.e., different MBS services may correspond to the same G-RNTI).

It should be noted that, in the case where the G-RNTI is a G-RNTI dedicated for transmission mode indication, one G-RNTI may correspond to one MBS service, i.e., different G-RNTIs may correspond to different MBS services.

2) The first signaling is a first MAC CE.

In the embodiment of the present application, when the first signaling is a first MAC CE, the first MAC CE corresponds to a first LCID, where the first LCID is used to indicate that a type of the first MAC CE is a MAC CE indicating the transmission mode.

In the embodiment of the application, the scheduling information corresponding to the first MAC CE is scrambled through the G-RNTI.

In some alternative embodiments, the G-RNTI is a G-RNTI dedicated to the transmission mode indication. Here, the G-RNTI is a newly defined G-RNTI for the transmission mode indication, which is dedicated for scrambling the transmission mode indication MAC CE, where the transmission mode indication MAC CE is the first MAC CE, and the transmission mode indication MAC CE may also be referred to as PTM activation/deactivation MAC CE or PTP activation/deactivation MAC CE. As an example, the G-RNTI dedicated to the transmission scheme indication may also be referred to as an N-G-RNTI, and the name of the G-RNTI dedicated to the transmission scheme indication is not limited in the embodiment of the present application.

In the case that the G-RNTI is a G-RNTI dedicated to transmission mode indication in the scheme a 1), the first MBS service indicated by the first MAC CE is determined based on the G-RNTI corresponding to the first MAC CE.

In the case that the G-RNTI is a G-RNTI for MBS service scheduling in the scheme b 1), if one G-RNTI corresponds to one MBS service, the first MBS service indicated by the first MAC CE is determined based on the G-RNTI corresponding to the first MAC CE; if one G-RNTI corresponds to a plurality of MBS services, the first MBS service indicated by the first MAC CE is determined based on the indication information of the first MBS service carried in the first MAC CE.

Here, optionally, the indication information of the first MBS service is an MBS index corresponding to the first MBS service. Further, optionally, an MBS index of each MBS service of the plurality of MBS services is configured through RRC signaling.

Scheme II

In the embodiment of the present application, the first signaling is used to indicate a transmission mode of an MBS group corresponding to at least one MBS service, where the at least one MBS service includes the first MBS service, and the transmission mode of the MBS group is used to determine a transmission mode of all terminal devices in the MBS group. Here, the network device may indicate, through the first signaling, a transmission mode of an MBS group corresponding to one or more MBS services, and for one MBS group, the transmission modes of all terminal devices in the MBS group are the same as the transmission mode of the MBS group. The transmission modes of the MBS groups corresponding to different MBS services may be different.

In the embodiment of the present application, the first signaling is a paging message or a second DCI or a second MAC CE. This is described below.

1) The first signaling is a paging message.

In the embodiment of the present application, the first signaling is a paging message, where the paging message is used to indicate a transmission mode of an MBS group corresponding to the first MBS service.

In some optional embodiments, the first MBS service indicated by the paging message is determined based on an MBS session identifier of the first MBS service carried by the paging message.

In some optional embodiments, the transmission mode of the paging message indication is configured through system broadcasting; or the transmission mode of the paging message indication is agreed by a protocol.

2) The first signaling is a second DCI.

In the embodiment of the present application, when the first signaling is the second DCI, the second DCI is scrambled through the G-RNTI.

In some alternative embodiments, the G-RNTI is a G-RNTI dedicated to the transmission mode indication. Here, the G-RNTI is a newly defined G-RNTI for the transmission mode indication, which is dedicated to scrambling the transmission mode indication DCI, where the transmission mode indication DCI is the second DCI, and the transmission mode indication DCI may also be referred to as PTM activation/deactivation DCI or PTP activation/deactivation DCI. As an example, the G-RNTI dedicated to the transmission scheme indication may also be referred to as an N-G-RNTI, and the name of the G-RNTI dedicated to the transmission scheme indication is not limited in the embodiment of the present application.

In the case that the G-RNTI is a G-RNTI dedicated to transmission mode indication in the scheme a 2), one MBS service indicated by the second DCI is determined based on the G-RNTI corresponding to the second DCI, where the one MBS service is the first MBS service.

Here, the transmission mode indicated by the second DCI is determined based on second information carried in the second DCI; or, the transmission mode indicated by the second DCI is configured through RRC signaling; or the transmission mode indicated by the second DCI is agreed by a protocol. Further, optionally, the second information is a first indication bit, where a value of the first indication bit is used to indicate a transmission mode corresponding to the first MBS service.

In the case that the G-RNTI is a G-RNTI for MBS service scheduling in the scheme b 2), if one G-RNTI corresponds to one MBS service, one MBS service indicated by the second DCI is determined based on the G-RNTI corresponding to the first MAC CE, and the one MBS service is the first MBS service.

In the case that the G-RNTI is a G-RNTI for MBS service scheduling in the scheme b 3), if one G-RNTI corresponds to multiple MBS services, the second DCI carries third information, where the third information is a second bitmap, the second bitmap includes multiple bits, the multiple bits and the multiple MBS services have a second correspondence, and a value of each bit in the multiple bits is used to indicate a transmission mode of the MBS service corresponding to the bit.

In some optional embodiments, the second correspondence is configured through RRC signaling; or, the second corresponding relation is agreed by a protocol.

In some optional embodiments, the second correspondence is: the plurality of bits are in one-to-one correspondence with the plurality of MBS services in the order from low to high according to the index; or the plurality of bits are in one-to-one correspondence with the plurality of MBS services in the order from high to low and the order from small to large.

As an example, referring to fig. 6, one G-RNTI corresponds to 4 MBS services, namely MBS service 11, MBS service 12, MBS service 13 and MBS service 14, wherein the index of MBS service 11 is 11, the index of MBS service 12 is 12, the index of MBS service 13 is 13, and the index of MBS service 14 is 14. The second bitmap includes 4 bits, and the order of 4 bits from low order to high order corresponds to 4 MBS services one by one in order of index from small to large. Assuming that the bit value of 1 is used for indicating that the transmission mode of the MBS service corresponding to the bit is a PTP mode, and the bit value of 0 is used for indicating that the transmission mode of the MBS service corresponding to the bit is a PTM mode, then the transmission modes of the MBS groups corresponding to the MBS service 11 and the MBS service 14 are both PTP modes, and the transmission modes of the MBS groups corresponding to the MBS service 12 and the MBS service 13 are both PTM modes.

Here, it should be noted that, the transmission mode of the MBS service refers to the transmission mode of the MBS group corresponding to the MBS, the transmission mode of the MBS group refers to the transmission mode of all terminal devices in the MBS group, and the transmission modes of all terminal devices in the MBS group are the same.

3) The first signaling is a second MAC CE.

In the embodiment of the application, when the first signaling is the second MAC CE, the scheduling information corresponding to the second MAC CE is scrambled by the G-RNTI.

In some alternative embodiments, the G-RNTI is a G-RNTI dedicated to the transmission mode indication. Here, the G-RNTI is a newly defined G-RNTI for the transmission mode indication, which is dedicated for scrambling the transmission mode indication MAC CE, where the transmission mode indication MAC CE is the second MAC CE, and the transmission mode indication MAC CE may also be referred to as PTM activation/deactivation MAC CE or PTP activation/deactivation MAC CE. As an example, the G-RNTI dedicated to the transmission scheme indication may also be referred to as an N-G-RNTI, and the name of the G-RNTI dedicated to the transmission scheme indication is not limited in the embodiment of the present application.

In the case that the G-RNTI is a G-RNTI dedicated to a transmission mode indication in the scheme a 3), the one MBS service indicated by the second MAC CE is determined based on a sub-header including a second LCID, where the second LCID is a LCID corresponding to the second MAC CE, and the one MBS service is the first MBS service.

Here, the transmission mode indicated by the second MAC CE is determined based on fourth information carried in the second MAC CE; or the transmission mode indicated by the second MAC CE is configured through RRC signaling; or the transmission mode indicated by the second MAC CE is agreed by a protocol. Further, optionally, the fourth information is a second indication bit, where a value of the second indication bit is used to indicate a transmission mode corresponding to the first MBS service.

In the case that the G-RNTI is the G-RNTI for the MBS service scheduling in the scheme b 3), if one G-RNTI corresponds to one MBS service, one MBS service indicated by the second MAC CE is determined based on a sub-header including a second LCID, where the second LCID is a LCID corresponding to the second MAC CE, and the one MBS service is the first MBS service.

In the case that the G-RNTI is a G-RNTI for MBS service scheduling in the scheme c 3), if one G-RNTI corresponds to multiple MBS services, the second MAC CE carries third information, where the third information is a second bitmap, the second bitmap includes multiple bits, the multiple bits and the multiple MBS services have a second correspondence, and a value of each bit in the multiple bits is used to indicate a transmission mode of the MBS service corresponding to the bit.

In an application scenario, the first terminal device receives the first MBS service in a PTM mode before receiving the first signaling; if the first terminal equipment determines that the transmission mode of the first terminal equipment is a PTP mode based on the first signaling, the terminal equipment switches the transmission mode from the PTM mode to the PTP mode; wherein the PTM mode is deactivated and the PTP mode is activated; and if the first terminal equipment determines that the transmission mode of the first terminal equipment is a PTM mode based on the first signaling, the terminal equipment keeps the transmission mode to be the PTM mode.

In an application scenario, the first terminal device receives the MBS service in a PTP mode before receiving the first signaling; if the first terminal equipment determines that the transmission mode of the first terminal equipment is a PTM mode based on the first signaling, the terminal equipment switches the transmission mode from a PTP mode to a PTM mode; wherein the PTP mode is deactivated and the PTM mode is activated; and if the first terminal equipment determines that the transmission mode of the first terminal equipment is a PTP mode based on the first signaling, the terminal equipment keeps the transmission mode to be the PTP mode.

According to the scheme, the network equipment can inform the first terminal equipment of the transmission mode of the MBS service, and in some optional embodiments, before the first terminal equipment receives the first signaling sent by the network equipment, the first terminal equipment sends the second signaling to the network equipment, the network equipment receives the second signaling sent by the first terminal equipment, and the second signaling is used for requesting the network equipment to switch the transmission mode of the first terminal equipment from the first transmission mode to the second transmission mode; the second transmission mode is a PTP mode, the first transmission mode is a PTM mode, or the first transmission mode is a PTP mode, and the second transmission mode is a PTM mode.

In some alternative embodiments, the first terminal device sends the second signaling to the network device in a PTP manner or in a unicast manner.

In some alternative embodiments, the second signaling carries at least one of: MBS session identification; request destination indication information. Further optionally, the request destination indication information is used to indicate at least one of: the transmission mode of the first terminal equipment requesting switching is the second transmission mode; and the first terminal equipment suggests the scheduling parameters corresponding to the second transmission mode. As an example, scheduling parameters include, but are not limited to: TB size (TB size), modulation and demodulation policy (MCS), etc.

In the above scheme, the second signaling is MAC CE or RRC signaling. As an example, the RRC signaling is RRC signaling carrying UE assistance information or is defined RRC signaling.

The following describes the technical scheme of the embodiment of the present application with reference to specific application examples.

Application example 1

The base station configures an index number of the first terminal device to be 1 in the MBS service receiving process through RRC special signaling, wherein the index number is unique in the MBS service in a cell covered by the base station. The base station determines to switch the transmission mode of one or a plurality of terminal equipment units to the PTP mode. The base station issues a first command, wherein the first command comprises transmission mode indications of all terminal equipment in an MBS group corresponding to MBS service.

In one example, the first command carries a first bitmap, where the first bitmap includes a plurality of bits, and the plurality of bits are in a sequence from low to high, and are in a sequence from small to large in a sequence of indexes. For example, the index allocated to the first terminal device is 3, and the third bit from the low bit to the high bit in the first bit map is the bit corresponding to the first terminal device, and the value of the bit represents the transmission mode indication corresponding to the first terminal device. If the value of the bit is 1, it indicates that the transmission mode of the first terminal device is PTP mode, in other words, if the value of the bit is 1, it indicates that the first terminal device activates or switches to PTP mode, and deactivates PTM mode. If the value of the bit is 0, it indicates that the transmission mode of the first terminal device is the PTM mode, in other words, if the value of the bit is 0, it indicates that the first terminal device activates or switches to the PTM mode and deactivates the PTP mode. The values of the bits may be reversed.

The first bit map may be carried in the MAC CE or in the DCI.

1) If the first bitmap is carried in the DCI, the DCI is scrambled by a G-RNTI, which may be a G-RNTI for MBS service scheduling or may be a G-RNTI dedicated to transmission mode indication.

2) If the first bitmap is carried in a MAC CE, an LCID is defined for the MAC CE, by which the MAC CE is identified. The scheduling information corresponding to the MAC CE is scrambled by a G-RNTI, which may be a G-RNTI used for MBS service scheduling, or may be a G-RNTI dedicated to transmission mode indication.

In an alternative manner, the G-RNTI may be a G-RNTI used for MBS service scheduling, or the G-RNTI may also be a G-RNTI dedicated to transmission mode indication, and if each G-RNTI corresponds to one MBS service, i.e., each G-RNTI corresponds to one MBS session identifier, then the MBS session identifier need not be included in the MAC CE.

As an example, referring to fig. 7, the mac CE includes a first bitmap including 16 bits, which respectively correspond to indexes of 16 terminal devices, and a value of the bit is used to indicate a transmission mode of the terminal device to which the bit corresponds. In addition, the MAC CE further includes a Length (Length) indication field for indicating the number of bits included in the first bit map.

In an alternative manner, the G-RNTI may be a G-RNTI for MBS service scheduling, and if each G-RNTI corresponds to a plurality of MBS services, i.e., each G-RNTI corresponds to a plurality of MBS session identities, then the MAC CE needs to include an MBS session identity, which is used to determine the MBS service to which the first bitmap applies. Considering that the MBS session identifier is too large, one MBS index (MBS index) allocated for each of the plurality of MBS services sharing one G-RNTI is configured for the first terminal device through RRC dedicated signaling, and the MBS index corresponding to the MBS session identifier is included in the MAC CE.

As an example, referring to fig. 8, the mac CE includes a first bitmap including 16 bits, which respectively correspond to indexes of 16 terminal devices, and a value of the bit is used to indicate a transmission mode of the terminal device to which the bit corresponds. In addition, the MAC CE further includes a Length (Length) indication field for indicating the number of bits included in the first bit map. In addition, the MAC CE further includes an MBS index indicating an MBS service to which the first bit map is applied.

Application instance two

For RRC connected terminal equipment, a base station sends a paging message carrying MBS session identification, wherein the paging message is used for indicating that the transmission mode of all terminal equipment in an MBS group corresponding to MBS service is a PTP mode or a PTM mode.

Here, the transmission manner of the paging message indication may be configured through protocol conventions or through system broadcasting.

Application example three

Scheme a) the base station informs the transmission mode of all terminal devices in the MBS group corresponding to one or more MBS services through DCI, where the transmission mode may be a PTM mode or a PTM mode. The DCI is scrambled by the G-RNTI.

In an alternative, the G-RNTI may be a G-RNTI for MBS service scheduling or a G-RNTI may be a G-RNTI dedicated to transport indication. If one G-RNTI corresponds to one MBS service, that is, one G-RNTI corresponds to one MBS session identifier, the DCI scrambled by the G-RNTI is used to indicate that the transmission mode of all terminal devices in the MBS group corresponding to the MBS service is a PTM mode or a PTP mode.

Here, the transmission mode of the DCI indication may be configured through RRC signaling, or determined through protocol convention, or through an indication bit carried in the DCI. As an example, the DCI carries an indication bit with 1 bit, where the indication bit has a value for indicating a transmission mode, for example, a value of 1 indicates a PTP mode, and a value of 0 indicates a PTM mode. The value of the indicator bit may be reversed.

In an alternative manner, the G-RNTI may be a G-RNTI used for MBS service scheduling, and if one G-RNTI corresponds to multiple MBS services, that is, one G-RNTI corresponds to multiple MBS session identifiers, the DCI carries a second bitmap, where the second bitmap includes multiple bits, the multiple bits correspond to the multiple MBS services one to one, and the value of a bit is used to indicate a transmission manner of all terminal devices in an MBS group corresponding to the MBS service corresponding to the bit, for example, the value of a bit is 1 indicates a PTP manner, and the value of a bit is 0 indicates a PTM manner. The value of the indicator bit may be reversed. Here, the correspondence between the plurality of bits in the second bitmap and the plurality of MBS services may be predetermined by a protocol or configured through RRC signaling.

The base station of the scheme B) informs the transmission mode of all terminal devices in the MBS group corresponding to one or more MBS services through the MAC CE, where the transmission mode may be a PTM mode or a PTM mode. The scheduling information corresponding to the MAC CE is scrambled by the G-RNTI.

In an alternative, the G-RNTI may be a G-RNTI for MBS service scheduling or a G-RNTI may be a G-RNTI dedicated to transport indication. If one G-RNTI corresponds to one MBS service, namely one G-RNTI corresponds to one MBS session identifier, the sub-header containing the LCID of the MAC CE is used for indicating that the transmission mode of all terminal equipment in the MBS group corresponding to the MBS service is a PTM mode or a PTP mode.

Here, the transmission mode of the MAC CE indication may be configured through RRC signaling, or determined through protocol convention, or through an indication bit carried in the MAC CE. As an example, the MAC CE carries a 1-bit indication bit, where the indication bit has a value for indicating the transmission mode, for example, a value of 1 indicates the PTP mode, and a value of 0 indicates the PTM mode. The value of the indicator bit may be reversed.

In an alternative manner, the G-RNTI may be a G-RNTI used for MBS service scheduling, and if one G-RNTI corresponds to multiple MBS services, that is, one G-RNTI corresponds to multiple MBS session identifiers, the MAC CE carries a second bitmap, where the second bitmap includes multiple bits, the multiple bits correspond to the multiple MBS services one to one, and the value of the bit is used to indicate a transmission manner of all terminal devices in an MBS group corresponding to the MBS service corresponding to the bit, for example, the value of the bit is 1 indicates a PTP manner, and the value of the bit is 0 indicates a PTM manner. The value of the indicator bit may be reversed. Here, the correspondence between the plurality of bits in the second bitmap and the plurality of MBS services may be predetermined by a protocol or configured through RRC signaling.

Application example four

The first terminal device decides that the base station needs to be requested to deactivate the PTM mode (i.e. activate or switch to the PTP mode) or activate the PTM mode (i.e. activate or switch to the PTM mode), and then the first terminal device sends a second signaling to the base station through the PTP mode or the unicast mode, where the second signaling is used to instruct the network device to switch to the PTP mode or the PTM mode.

In some alternatives, the second signaling includes MBS session identification and/or a request destination indication, where the request destination indication is optionally used to indicate at least one of the following: request to switch to PTP mode, request to switch to PTM mode, scheduling parameters corresponding to suggested PTP mode, scheduling parameters corresponding to suggested PTM mode. As an example, scheduling parameters include, but are not limited to: TB size (TB size), modulation and demodulation policy (MCS), etc.

In some alternatives, the second signaling may be MAC CE or RRC signaling. Here, the RRC signaling may be newly defined RRC signaling or RRC signaling corresponding to ueassistance information.

According to the technical scheme of the embodiment of the application, on one hand, a scheme for informing whether the transmission mode of the MBS service is the PTP mode or the PTM mode based on the group (namely MBS group) mode is provided, so that the purpose of saving signaling is achieved. On the other hand, a scheme for assisting the network side in judging whether the transmission mode of the terminal equipment is a PTP mode or a PTM mode based on the mode of the terminal equipment request is provided, so that the transmission mode indicated by the network side is more in line with the expectations of the terminal equipment.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application. For example, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further. As another example, any combination of the various embodiments of the present application may be made without departing from the spirit of the present application, which should also be regarded as the disclosure of the present application. For example, on the premise of no conflict, the embodiments described in the present application and/or technical features in the embodiments may be combined with any other embodiments in the prior art, and the technical solutions obtained after combination should also fall into the protection scope of the present application.

It should be further understood that, in the various method embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present application. Furthermore, in the embodiment of the present application, the terms "downstream", "upstream" and "sidestream" are used to indicate a transmission direction of signals or data, where "downstream" is used to indicate that the transmission direction of signals or data is a first direction from a station to a user equipment of a cell, and "upstream" is used to indicate that the transmission direction of signals or data is a second direction from the user equipment of the cell to the station, and "sidestream" is used to indicate that the transmission direction of signals or data is a third direction from the user equipment 1 to the user equipment 2. For example, "downstream signal" means that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, which means that three relationships may exist. Specifically, a and/or B may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Fig. 9 is a schematic structural diagram of a transmission mode determining apparatus provided in an embodiment of the present application, which is applied to a terminal device, as shown in fig. 9, where the transmission mode determining apparatus includes:

a receiving unit 901, configured to receive a first signaling sent by a network device, where the first signaling is used to determine a transmission mode of a plurality of terminal devices in a multicast broadcast service MBS group, where the transmission mode is a point-to-point PTP mode or a point-to-multipoint PTM mode; wherein the plurality of terminal devices includes the first terminal device;

a determining unit 902, configured to determine a transmission manner of the first terminal device based on the first signaling;

the receiving unit 901 is further configured to receive a first MBS service according to a transmission manner of the first terminal device.

In some optional embodiments, the first signaling is used to indicate a transmission mode of each terminal device in an MBS group corresponding to the first MBS service.

In some optional embodiments, the first correspondence is configured through radio resource control RRC signaling; or, the first corresponding relation is agreed by a protocol.

In some alternative embodiments, the first correspondence is:

the plurality of bits are in one-to-one correspondence with the plurality of terminal devices in the order from low to high according to the order from small to large according to the index; or,

the plurality of bits are in one-to-one correspondence with the plurality of terminal devices in the order from high to low and in the order from low to high.

In some optional embodiments, the determining unit 902 is configured to determine, based on the index of the first terminal device and the first correspondence, that the first terminal device corresponds to a first bit in the first bit map; and determining the transmission mode of the first terminal equipment based on the value of the first bit.

In some alternative embodiments, the index of the first terminal device is configured through RRC signaling.

In some optional embodiments, the first signaling is first downlink control information DCI or a first MAC CE.

In some alternative embodiments, where the first signaling is a first DCI, the first DCI is scrambled by a G-RNTI;

The G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.

In some optional embodiments, in a case where the first signaling is a first MAC CE, the first MAC CE corresponds to a first logical channel identifier LCID, where the first LCID is used to indicate that a type of the first MAC CE is a MAC CE that indicates the transmission mode.

In some optional embodiments, the scheduling information corresponding to the first MAC CE is scrambled by a G-RNTI;

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.

In some alternative embodiments, where the G-RNTI is a G-RNTI dedicated to transport indication,

the first MBS service indicated by the first MAC CE is determined based on the G-RNTI corresponding to the first MAC CE.

In some alternative embodiments, in the case that the G-RNTI is a G-RNTI for MBS service scheduling,

if one G-RNTI corresponds to one MBS service, determining the first MBS service indicated by the first MAC CE based on the G-RNTI corresponding to the first MAC CE;

if one G-RNTI corresponds to a plurality of MBS services, the first MBS service indicated by the first MAC CE is determined based on the indication information of the first MBS service carried in the first MAC CE.

In some optional embodiments, the indication information of the first MBS service is an MBS index corresponding to the first MBS service.

In some alternative embodiments, the MBS index of each MBS service of the plurality of MBS services is configured by RRC signaling.

In some optional embodiments, the first signaling is configured to indicate a transmission mode of an MBS group corresponding to at least one MBS service, where the at least one MBS service includes the first MBS service, and the transmission mode of the MBS group is configured to determine a transmission mode of all terminal devices in the MBS group.

In some optional embodiments, the first signaling is a paging message, where the paging message is used to indicate a transmission mode of an MBS group corresponding to the first MBS service.

In some optional embodiments, the first signaling is a second DCI or a second MAC CE.

In some alternative embodiments, where the first signaling is a second DCI, the second DCI is scrambled by a G-RNTI;

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.

and determining one MBS service indicated by the second DCI based on the G-RNTI corresponding to the second DCI, wherein the one MBS service is the first MBS service.

if one G-RNTI corresponds to one MBS service, one MBS service indicated by the second DCI is determined based on the G-RNTI corresponding to the first MAC CE, and the one MBS service is the first MBS service.

In some optional embodiments, the transmission mode indicated by the second DCI is determined based on second information carried in the second DCI; or, the transmission mode indicated by the second DCI is configured through RRC signaling; or the transmission mode indicated by the second DCI is agreed by a protocol.

In some optional embodiments, the second information is a first indication bit, where a value of the first indication bit is used to indicate a transmission mode corresponding to the first MBS service.

if one G-RNTI corresponds to a plurality of MBS services, the second DCI carries third information, where the third information is a second bitmap, where the second bitmap includes a plurality of bits, the plurality of bits and the plurality of MBS services have a second correspondence, and a value of each bit in the plurality of bits is used to indicate a transmission mode of the MBS service corresponding to the bit.

In some optional embodiments, in a case that the first signaling is a second MAC CE, the scheduling information corresponding to the second MAC CE is scrambled by a G-RNTI;

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.

and determining one MBS service indicated by the second MAC CE based on the sub-header containing a second LCID, wherein the second LCID is the LCID corresponding to the second MAC CE, and the one MBS service is the first MBS service.

If one G-RNTI corresponds to one MBS service, one MBS service indicated by the second MAC CE is determined based on a sub-header including a second LCID, where the second LCID is a LCID corresponding to the second MAC CE, and the one MBS service is the first MBS service.

In some optional embodiments, the transmission mode indicated by the second MAC CE is determined based on fourth information carried in the second MAC CE; or the transmission mode indicated by the second MAC CE is configured through RRC signaling; or the transmission mode indicated by the second MAC CE is agreed by a protocol.

In some optional embodiments, the fourth information is a second indication bit, where a value of the second indication bit is used to indicate a transmission mode corresponding to the first MBS service.

if one G-RNTI corresponds to a plurality of MBS services, the second MAC CE carries third information, where the third information is a second bitmap, the second bitmap includes a plurality of bits, the plurality of bits and the plurality of MBS services have a second correspondence, and a value of each bit in the plurality of bits is used to indicate a transmission mode of the MBS service corresponding to the bit.

In some optional embodiments, the second correspondence is:

the plurality of bits are in one-to-one correspondence with the plurality of MBS services in the order from low to high according to the index; or,

the plurality of bits are in one-to-one correspondence with the plurality of MBS services in the order from high to low and the order from small to large.

In some alternative embodiments, in the case that the G-RNTI is a G-RNTI dedicated to a transmission mode indication, different G-RNTIs correspond to different MBS services.

In some alternative embodiments, the receiving unit 901 receives the first MBS service in a PTM manner before receiving the first signaling;

the apparatus further comprises: a control unit, configured to switch the transmission mode from the PTM mode to the PTP mode if the determining unit 902 determines that the transmission mode of the first terminal device is the PTP mode based on the first signaling; wherein the PTM mode is deactivated and the PTP mode is activated; if the determining unit 902 determines that the transmission mode of the first terminal device is a PTM mode based on the first signaling, the transmission mode is kept to be the PTM mode.

In some alternative embodiments, the receiving unit 901 receives the MBS service in a PTP manner before receiving the first signaling;

the apparatus further comprises: a control unit, configured to switch the transmission mode from the PTP mode to the PTM mode if the determining unit 902 determines that the transmission mode of the first terminal device is the PTM mode based on the first signaling; wherein the PTP mode is deactivated and the PTM mode is activated; if the determining unit 902 determines that the transmission mode of the first terminal device is PTP based on the first signaling, it keeps the transmission mode as PTP.

In some alternative embodiments, the apparatus further comprises:

a sending unit 903, configured to send, before the receiving unit 901 receives a first signaling sent by a network device, a second signaling to the network device, where the second signaling is used to request the network device to switch a transmission mode of the first terminal device from a first transmission mode to a second transmission mode; the second transmission mode is a PTP mode, the first transmission mode is a PTM mode, or the first transmission mode is a PTP mode, and the second transmission mode is a PTM mode.

In some optional embodiments, the sending unit 903 is configured to send the second signaling to the network device in a PTP manner or a unicast manner.

In some alternative embodiments, the second signaling carries at least one of:

MBS session identification;

request destination indication information.

In some alternative embodiments, the request destination indication information is used to indicate at least one of:

the transmission mode of the first terminal equipment requesting switching is the second transmission mode;

and the first terminal equipment suggests the scheduling parameters corresponding to the second transmission mode.

In some alternative embodiments, the second signaling is MAC CE or RRC signaling.

In some alternative embodiments, the RRC signaling is RRC signaling carrying UE assistance information or is defined RRC signaling.

It should be understood by those skilled in the art that the description of the determining device for a transmission manner according to the embodiment of the present application may be understood by referring to the description of the determining method for a transmission manner according to the embodiment of the present application.

Fig. 10 is a schematic diagram ii of the structural composition of a transmission mode determining device provided in the embodiment of the present application, which is applied to a network device, as shown in fig. 10, where the transmission mode determining device includes:

A sending unit 1001, configured to send a first signaling, where the first signaling is used to determine a transmission mode of a plurality of terminal devices in an MBS group, and the transmission mode is a PTP mode or a PTM mode.

In some alternative embodiments, the first correspondence is:

In some optional embodiments, the first signaling is a first DCI or a first MAC CE.

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.

In some optional embodiments, in a case where the first signaling is a first MAC CE, the first MAC CE corresponds to a first LCID, where the first LCID is used to indicate that a type of the first MAC CE is a MAC CE that indicates the transmission mode.

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.

the G-RNTI is G-RNTI used for MBS service scheduling; or,

The G-RNTI is G-RNTI special for transmission mode indication.

In some optional embodiments, the second correspondence is:

In some alternative embodiments, the apparatus further comprises: a receiving unit 1002, configured to receive, before the sending unit 1001 sends the first signaling, a second signaling sent by the first terminal device, where the second signaling is used to request the network device to switch a transmission mode of the first terminal device from a first transmission mode to a second transmission mode; the second transmission mode is a PTP mode, the first transmission mode is a PTM mode, or the first transmission mode is a PTP mode, and the second transmission mode is a PTM mode.

In some optional embodiments, the receiving unit 1002 is configured to receive the second signaling sent by the first terminal device in a PTP manner or a unicast manner.

In some alternative embodiments, the second signaling carries at least one of:

MBS session identification;

request destination indication information.

Fig. 11 is a schematic block diagram of a communication device 1100 according to an embodiment of the present application. The communication device may be a terminal device or a network device. The communication device 1100 shown in fig. 11 comprises a processor 1110, from which the processor 1110 may call and run a computer program to implement the method in an embodiment of the application.

Optionally, as shown in fig. 11, the communication device 1100 may also include a memory 1120. Wherein the processor 1110 may call and run a computer program from the memory 1120 to implement the methods in embodiments of the present application.

Wherein the memory 1120 may be a separate device from the processor 1110 or may be integrated into the processor 1110.

Optionally, as shown in fig. 11, the communication device 1100 may further include a transceiver 1130, and the processor 1110 may control the transceiver 1130 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

The transceiver 1130 may include, among other things, a transmitter and a receiver. Transceiver 1130 may further include antennas, the number of which may be one or more.

Optionally, the communication device 1100 may be a network device in the embodiment of the present application, and the communication device 1100 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 1100 may be specifically a mobile terminal/terminal device according to an embodiment of the present application, and the communication device 1100 may implement a corresponding flow implemented by the mobile terminal/terminal device in each method according to an embodiment of the present application, which is not described herein for brevity.

Fig. 12 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1200 shown in fig. 12 includes a processor 1210, and the processor 1210 may call and execute a computer program from a memory to implement the method according to the embodiment of the present application.

Optionally, as shown in fig. 12, the chip 1200 may further include a memory 1220. Wherein the processor 1210 may call and run computer programs from the memory 1220 to implement the methods of embodiments of the present application.

The memory 1220 may be a separate device from the processor 1210, or may be integrated into the processor 1210.

Optionally, the chip 1200 may also include an input interface 1230. Wherein the processor 1210 may control the input interface 1230 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the chip 1200 may further include an output interface 1240. Wherein processor 1210 may control the output interface 1240 to communicate with other devices or chips, and in particular may output information or data to other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

Fig. 13 is a schematic block diagram of a communication system 1300 provided by an embodiment of the present application. As shown in fig. 13, the communication system 1300 includes a terminal device 1310 and a network device 1320.

The terminal device 1310 may be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1320 may be used to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is illustrative but not restrictive, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the network device in each method in the embodiment of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of 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.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for determining a transmission mode, the method comprising:

the method comprises the steps that a first terminal device receives a first signaling sent by a network device, wherein the first signaling is used for determining transmission modes of a plurality of terminal devices in a multicast broadcast service MBS group, and the transmission modes are a point-to-point PTP mode or a point-to-multipoint PTM mode; wherein the plurality of terminal devices includes the first terminal device;

the first terminal equipment determines a transmission mode of the first terminal equipment based on the first signaling, and receives a first MBS service according to the transmission mode of the first terminal equipment.
The method of claim 1, wherein the first signaling is used to indicate a transmission manner of each terminal device in an MBS group corresponding to the first MBS service.
The method of claim 2, wherein the first signaling carries first information, the first information is a first bitmap, the first bitmap includes a plurality of bits, the plurality of bits and a plurality of terminal devices in an MBS group corresponding to the first MBS service have a first correspondence, and a value of each bit in the plurality of bits is used to indicate a transmission mode of the terminal device corresponding to the bit.
The method of claim 3, wherein,

the first corresponding relation is configured through Radio Resource Control (RRC) signaling; or,

the first correspondence is agreed by a protocol.
The method of claim 3 or 4, wherein the first correspondence is:

the plurality of bits are in one-to-one correspondence with the plurality of terminal devices in the order from low to high according to the order from small to large according to the index; or,

the plurality of bits are in one-to-one correspondence with the plurality of terminal devices in the order from high to low and in the order from low to high.
The method according to any of claims 3 to 5, wherein the first terminal device determining a transmission mode of the first terminal device based on the first signaling comprises:

the first terminal equipment determines that the first terminal equipment corresponds to a first bit in the first bit map based on the index of the first terminal equipment and the first corresponding relation;

and the first terminal equipment determines the transmission mode of the first terminal equipment based on the value of the first bit.
The method of claim 6, wherein the index of the first terminal device is configured by RRC signaling.
The method according to any of claims 2 to 7, wherein the first signaling is first downlink control information, DCI, or a first medium access control, MAC, control element, CE.
The method of claim 8, wherein, if the first signaling is a first DCI, the first DCI is scrambled by a G-RNTI;

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.
The method of claim 8, wherein, in the case where the first signaling is a first MAC CE, the first MAC CE corresponds to a first logical channel identification LCID, where the first LCID is used to indicate that a type of the first MAC CE is a MAC CE indicating the transmission mode.
The method of claim 10, wherein the scheduling information corresponding to the first MAC CE is scrambled by a G-RNTI;

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.
The method of claim 11, wherein, in case the G-RNTI is a G-RNTI dedicated to transmission scheme indication,

the first MBS service indicated by the first MAC CE is determined based on the G-RNTI corresponding to the first MAC CE.
The method of claim 11, wherein, in case the G-RNTI is a G-RNTI for MBS service scheduling,

if one G-RNTI corresponds to one MBS service, determining the first MBS service indicated by the first MAC CE based on the G-RNTI corresponding to the first MAC CE;

if one G-RNTI corresponds to a plurality of MBS services, the first MBS service indicated by the first MAC CE is determined based on the indication information of the first MBS service carried in the first MAC CE.
The method of claim 13, wherein the indication information of the first MBS service is an MBS index corresponding to the first MBS service.
The method of claim 13 or 14, wherein MBS indexes of each of the plurality of MBS services are configured through RRC signaling.
The method of claim 1, wherein the first signaling is used to indicate a transmission mode of an MBS group corresponding to at least one MBS service, the at least one MBS service includes the first MBS service, and the transmission mode of the MBS group is used to determine a transmission mode of all terminal devices in the MBS group.
The method of claim 16, wherein the first signaling is a paging message, and the paging message is used to indicate a transmission mode of an MBS group corresponding to the first MBS service.
The method of claim 17, wherein the first MBS service indicated by the paging message is determined based on an MBS session identification of the first MBS service carried by the paging message.
The method according to claim 17 or 18, wherein,

the transmission mode of the paging message indication is configured through system broadcasting; or,

the transmission mode of the paging message indication is agreed by a protocol.
The method of claim 16, wherein the first signaling is a second DCI or a second MAC CE.
The method of claim 20, wherein, if the first signaling is a second DCI, the second DCI is scrambled by a G-RNTI;

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.
The method of claim 21, wherein, in case the G-RNTI is a G-RNTI dedicated to a transmission manner indication,

and determining one MBS service indicated by the second DCI based on the G-RNTI corresponding to the second DCI, wherein the one MBS service is the first MBS service.
The method of claim 21, wherein, in case the G-RNTI is a G-RNTI for MBS service scheduling,

If one G-RNTI corresponds to one MBS service, one MBS service indicated by the second DCI is determined based on the G-RNTI corresponding to the first MAC CE, and the one MBS service is the first MBS service.
The method according to claim 22 or 23, wherein,

the transmission mode indicated by the second DCI is determined based on second information carried in the second DCI; or,

the transmission mode indicated by the second DCI is configured through RRC signaling; or,

the transmission mode indicated by the second DCI is agreed by a protocol.
The method of claim 24, wherein the second information is a first indication bit, and a value of the first indication bit is used to indicate a transmission mode corresponding to the first MBS service.
The method of claim 21, wherein, in case the G-RNTI is a G-RNTI for MBS service scheduling,

if one G-RNTI corresponds to a plurality of MBS services, the second DCI carries third information, where the third information is a second bitmap, where the second bitmap includes a plurality of bits, the plurality of bits and the plurality of MBS services have a second correspondence, and a value of each bit in the plurality of bits is used to indicate a transmission mode of the MBS service corresponding to the bit.
The method of claim 20, wherein, in the case where the first signaling is a second MAC CE, scheduling information corresponding to the second MAC CE is scrambled by a G-RNTI;

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.
The method of claim 27, wherein, in case the G-RNTI is a G-RNTI dedicated to a transmission manner indication,

and determining one MBS service indicated by the second MAC CE based on the sub-header containing a second LCID, wherein the second LCID is the LCID corresponding to the second MAC CE, and the one MBS service is the first MBS service.
The method of claim 27, wherein, in case the G-RNTI is a G-RNTI for MBS service scheduling,

if one G-RNTI corresponds to one MBS service, one MBS service indicated by the second MAC CE is determined based on a sub-header including a second LCID, where the second LCID is a LCID corresponding to the second MAC CE, and the one MBS service is the first MBS service.
The method of claim 28 or 29, wherein,

the transmission mode indicated by the second MAC CE is determined based on fourth information carried in the second MAC CE; or,

The transmission mode indicated by the second MAC CE is configured through RRC signaling; or,

the transmission mode indicated by the second MAC CE is agreed by a protocol.
The method of claim 30, wherein the fourth information is a second indicator bit, and a value of the second indicator bit is used to indicate a transmission mode corresponding to the first MBS service.
The method of claim 27, wherein, in case the G-RNTI is a G-RNTI for MBS service scheduling,

if one G-RNTI corresponds to a plurality of MBS services, the second MAC CE carries third information, where the third information is a second bitmap, the second bitmap includes a plurality of bits, the plurality of bits and the plurality of MBS services have a second correspondence, and a value of each bit in the plurality of bits is used to indicate a transmission mode of the MBS service corresponding to the bit.
The method of claim 26 or 32, wherein,

the second corresponding relation is configured through RRC signaling; or,

the second correspondence is agreed by a protocol.
The method of any one of claims 26, 32, 33, wherein the second correspondence is:

The plurality of bits are in one-to-one correspondence with the plurality of MBS services in the order from low to high according to the index; or,

the plurality of bits are in one-to-one correspondence with the plurality of MBS services in the order from high to low and the order from small to large.
The method according to any one of claims 9, 11, 12, 21, 22, 27, 28, wherein, in case the G-RNTI is a G-RNTI dedicated for transport mode indication, different G-RNTIs correspond to different MBS services.
The method according to any one of claims 1 to 35, wherein the first terminal device receives the first MBS service in PTM before receiving the first signaling; the method further comprises the steps of:

if the first terminal equipment determines that the transmission mode of the first terminal equipment is a PTP mode based on the first signaling, the terminal equipment switches the transmission mode from the PTM mode to the PTP mode; wherein the PTM mode is deactivated and the PTP mode is activated;

and if the first terminal equipment determines that the transmission mode of the first terminal equipment is a PTM mode based on the first signaling, the terminal equipment keeps the transmission mode to be the PTM mode.
The method according to any of claims 1 to 35, wherein the first terminal device receives the MBS service in PTP mode before receiving the first signaling; the method further comprises the steps of:

if the first terminal equipment determines that the transmission mode of the first terminal equipment is a PTM mode based on the first signaling, the terminal equipment switches the transmission mode from a PTP mode to a PTM mode; wherein the PTP mode is deactivated and the PTM mode is activated;

and if the first terminal equipment determines that the transmission mode of the first terminal equipment is a PTP mode based on the first signaling, the terminal equipment keeps the transmission mode to be the PTP mode.
The method of any of claims 1 to 37, wherein prior to the first terminal device receiving the first signaling sent by the network device, the method further comprises:

the first terminal equipment sends a second signaling to the network equipment, wherein the second signaling is used for requesting the network equipment to switch the transmission mode of the first terminal equipment from a first transmission mode to a second transmission mode; the second transmission mode is a PTP mode, the first transmission mode is a PTM mode, or the first transmission mode is a PTP mode, and the second transmission mode is a PTM mode.
The method of claim 38, wherein the first terminal device sending second signaling to the network device comprises:

the first terminal device sends a second signaling to the network device in a PTP mode or a unicast mode.
The method of claim 38 or 39, wherein the second signaling carries at least one of:

MBS session identification;

request destination indication information.
The method of claim 40, wherein the request destination indication information is used to indicate at least one of:

the transmission mode of the first terminal equipment requesting switching is the second transmission mode;

and the first terminal equipment suggests the scheduling parameters corresponding to the second transmission mode.
The method of any of claims 38 to 41, wherein the second signaling is MAC CE or RRC signaling.
The method of claim 42, wherein the RRC signaling is RRC signaling carrying UE assistance information or is defined RRC signaling.
A method for determining a transmission mode, the method comprising:

the network equipment sends a first signaling, wherein the first signaling is used for determining transmission modes of a plurality of terminal equipment in the MBS group, and the transmission modes are PTP modes or PTM modes.
The method of claim 44, wherein the first signaling is used to indicate a transmission mode of each terminal device in an MBS group corresponding to the first MBS service.
The method of claim 45, wherein the first signaling carries first information, the first information is a first bitmap, the first bitmap includes a plurality of bits, the plurality of bits have a first correspondence with a plurality of terminal devices in an MBS group corresponding to the first MBS service, and a value of each bit in the plurality of bits is used to indicate a transmission mode of the terminal device corresponding to the bit.
The method of claim 46, wherein,

the first corresponding relation is configured through RRC signaling; or,

the first correspondence is agreed by a protocol.
The method of claim 46 or 47, wherein the first correspondence is:

the plurality of bits are in one-to-one correspondence with the plurality of terminal devices in the order from low to high according to the order from small to large according to the index; or,

the plurality of bits are in one-to-one correspondence with the plurality of terminal devices in the order from high to low and in the order from low to high.
The method of any one of claims 45-48, wherein the first signaling is a first DCI or a first MAC CE.
The method of claim 49, wherein the first DCI is scrambled by a G-RNTI if the first signaling is the first DCI;

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.
The method of claim 49, wherein, in the case where the first signaling is a first MAC CE, the first MAC CE corresponds to a first LCID, where the first LCID is used to indicate that a type of the first MAC CE is a MAC CE indicating the transmission mode.
The method of claim 51, wherein the scheduling information corresponding to the first MAC CE is scrambled by a G-RNTI;

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.
The method of claim 52, wherein the G-RNTI is a G-RNTI dedicated to transmission mode indication,

the first MBS service indicated by the first MAC CE is determined based on the G-RNTI corresponding to the first MAC CE.
The method of claim 52, wherein the G-RNTI is a G-RNTI for MBS traffic scheduling,

If one G-RNTI corresponds to one MBS service, determining the first MBS service indicated by the first MAC CE based on the G-RNTI corresponding to the first MAC CE;

if one G-RNTI corresponds to a plurality of MBS services, the first MBS service indicated by the first MAC CE is determined based on the indication information of the first MBS service carried in the first MAC CE.
The method of claim 54, wherein the indication information of the first MBS service is an MBS index corresponding to the first MBS service.
The method of claim 54 or 55, wherein MBS indexes of each of the plurality of MBS services are configured through RRC signaling.
The method of claim 44, wherein the first signaling is used to indicate a transmission mode of an MBS group corresponding to at least one MBS service, the at least one MBS service includes the first MBS service, and the transmission mode of the MBS group is used to determine a transmission mode of all terminal devices in the MBS group.
The method of claim 57, wherein the first signaling is a paging message, and the paging message is used to indicate a transmission mode of an MBS group corresponding to the first MBS service.
The method of claim 58, wherein the first MBS service indicated by the paging message is determined based on an MBS session identification of the first MBS service carried by the paging message.
The method of claim 58 or 59, wherein,

the transmission mode of the paging message indication is configured through system broadcasting; or,

the transmission mode of the paging message indication is agreed by a protocol.
The method of claim 57, wherein the first signaling is a second DCI or a second MAC CE.
The method of claim 61, wherein, if the first signaling is a second DCI, the second DCI is scrambled by a G-RNTI;

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.
The method of claim 62, wherein the G-RNTI is a G-RNTI dedicated for transmission mode indication,

and determining one MBS service indicated by the second DCI based on the G-RNTI corresponding to the second DCI, wherein the one MBS service is the first MBS service.
The method of claim 62, wherein the G-RNTI is a G-RNTI for MBS service scheduling,

If one G-RNTI corresponds to one MBS service, one MBS service indicated by the second DCI is determined based on the G-RNTI corresponding to the first MAC CE, and the one MBS service is the first MBS service.
The method of claim 63 or 64, wherein,

the transmission mode indicated by the second DCI is determined based on second information carried in the second DCI; or,

the transmission mode indicated by the second DCI is configured through RRC signaling; or,

the transmission mode indicated by the second DCI is agreed by a protocol.
The method of claim 65, wherein the second information is a first indication bit, and a value of the first indication bit is used to indicate a transmission mode corresponding to the first MBS service.
The method of claim 62, wherein the G-RNTI is a G-RNTI for MBS service scheduling,

if one G-RNTI corresponds to a plurality of MBS services, the second DCI carries third information, where the third information is a second bitmap, where the second bitmap includes a plurality of bits, the plurality of bits and the plurality of MBS services have a second correspondence, and a value of each bit in the plurality of bits is used to indicate a transmission mode of the MBS service corresponding to the bit.
The method of claim 61, wherein, in the case where the first signaling is a second MAC CE, scheduling information corresponding to the second MAC CE is scrambled by a G-RNTI;

the G-RNTI is G-RNTI used for MBS service scheduling; or,

the G-RNTI is G-RNTI special for transmission mode indication.
The method of claim 68, wherein, in the case where the G-RNTI is a G-RNTI dedicated to transmission manner indication,

and determining one MBS service indicated by the second MAC CE based on the sub-header containing a second LCID, wherein the second LCID is the LCID corresponding to the second MAC CE, and the one MBS service is the first MBS service.
The method of claim 68, wherein, in case the G-RNTI is a G-RNTI for MBS service scheduling,

if one G-RNTI corresponds to one MBS service, one MBS service indicated by the second MAC CE is determined based on a sub-header including a second LCID, where the second LCID is a LCID corresponding to the second MAC CE, and the one MBS service is the first MBS service.
The method of claim 69 or 70, wherein,

the transmission mode indicated by the second MAC CE is determined based on fourth information carried in the second MAC CE; or,

The transmission mode indicated by the second MAC CE is configured through RRC signaling; or,

the transmission mode indicated by the second MAC CE is agreed by a protocol.
The method of claim 71, wherein the fourth information is a second indicator bit, and a value of the second indicator bit is used to indicate a transmission mode corresponding to the first MBS service.
The method of claim 68, wherein, in case the G-RNTI is a G-RNTI for MBS service scheduling,

if one G-RNTI corresponds to a plurality of MBS services, the second MAC CE carries third information, where the third information is a second bitmap, the second bitmap includes a plurality of bits, the plurality of bits and the plurality of MBS services have a second correspondence, and a value of each bit in the plurality of bits is used to indicate a transmission mode of the MBS service corresponding to the bit.
The method of claim 67 or 73, wherein,

the second corresponding relation is configured through RRC signaling; or,

the second correspondence is agreed by a protocol.
The method of any one of claims 67, 73, 74, wherein the second correspondence is:

The plurality of bits are in one-to-one correspondence with the plurality of MBS services in the order from low to high according to the index; or,

the plurality of bits are in one-to-one correspondence with the plurality of MBS services in the order from high to low and the order from small to large.
The method of any one of claims 50, 52, 53, 62, 63, 68, 69, wherein different G-RNTIs correspond to different MBS services if the G-RNTIs are G-RNTIs dedicated for transmission manner indications.
The method of any one of claims 44 to 76, wherein prior to the network device sending the first signaling, the method further comprises:

the network equipment receives a second signaling sent by the first terminal equipment, wherein the second signaling is used for requesting the network equipment to switch the transmission mode of the first terminal equipment from a first transmission mode to a second transmission mode; the second transmission mode is a PTP mode, the first transmission mode is a PTM mode, or the first transmission mode is a PTP mode, and the second transmission mode is a PTM mode.
The method of claim 77, wherein the network device receiving the second signaling sent by the first terminal device includes:

The network device receives a second signaling sent by the first terminal device in a PTP mode or a unicast mode.
The method of claim 77 or 78, wherein the second signaling carries at least one of:

MBS session identification;

request destination indication information.
The method of claim 79, wherein the request destination indication information is used to indicate at least one of:

the transmission mode of the first terminal equipment requesting switching is the second transmission mode;

and the first terminal equipment suggests the scheduling parameters corresponding to the second transmission mode.
The method of any of claims 77-80, wherein the second signaling is MAC CE or RRC signaling.
The method of claim 81, wherein the RRC signaling is RRC signaling bearing UE assistance information or is defined RRC signaling.
A transmission mode determining apparatus, applied to a first terminal device, the apparatus comprising:

a receiving unit, configured to receive a first signaling sent by a network device, where the first signaling is used to determine a transmission mode of a plurality of terminal devices in a multicast broadcast service MBS group, where the transmission mode is a point-to-point PTP mode or a point-to-multipoint PTM mode; wherein the plurality of terminal devices includes the first terminal device;

A determining unit, configured to determine a transmission mode of the first terminal device based on the first signaling;

the receiving unit is further configured to receive a first MBS service according to the transmission mode of the first terminal device.
A transmission mode determining apparatus, applied to a network device, the apparatus comprising:

a sending unit, configured to send a first signaling, where the first signaling is used to determine a transmission mode of multiple terminal devices in an MBS group, where the transmission mode is a PTP mode or a PTM mode.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory for performing the method of any of claims 1 to 43.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 44 to 82.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 43.
A chip, comprising: a processor for calling and running a computer program from memory, causing a device on which the chip is mounted to perform the method of any of claims 44 to 82.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 43.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 44 to 82.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 43.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 44 to 82.
A computer program which causes a computer to perform the method of any one of claims 1 to 43.
A computer program which causes a computer to perform the method of any one of claims 44 to 82.