MBS service transmission method and related device

Abstract

The embodiment of the present application discloses a transmission method and related device for an MBS service, the method comprising: a terminal receives a first MBS service on a first bandwidth part BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, preparing to receive, or currently receiving. It can be seen that the embodiment of the present application realizes receiving the MBS service through the BWP, ensuring the stability of the MBS service transmission while improving the terminal's battery life.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a transmission method and related devices for MBS services. Background Art

[0002] The maximum supported bandwidth of the fifth generation mobile networks (5G) New Radio (NR) communication system is 400M. If the terminal is expected to support such a large full-band bandwidth each time it transmits and receives, as in the Long Term Evolution (LTE) communication system, this is unnecessary. This will place high demands on the RF performance of the terminal, and it will be difficult to achieve chip integration, and the cost will be very high. Therefore, the concept of bandwidth part (BWP) is proposed. The terminal can work on different sub-band BWPs, and the subcarrier spacing on these BWPs can be different, thereby reducing terminal costs and saving power.

[0003] In the Multicast / Broadcast Service (MBS) service, the base station can send the MBS service in the form of multicast, broadcast, unicast, etc., and the terminal can receive the MBS service in the Radio Resource Control (RRC) idle state, RRC inactive state, and RRC connected state.

[0004] In the 5G system, for terminals, how to receive MBS services through BWP to ensure service reception stability and power saving is a problem that needs to be solved. Summary of the invention

[0005] The embodiments of the present application provide a method and a related device for transmitting MBS services, so as to achieve reception of MBS services through BWP, ensure the stability of MBS service transmission and improve the battery life of the terminal.

[0006] In a first aspect, an embodiment of the present application provides a method for transmitting an MBS service, including:

[0007] The terminal receives a first MBS service on a first bandwidth part BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving.

[0008] Compared with the prior art, the terminal can select the first BWP to receive the first MBS service of the terminal, and the selected first BWP provides the MBS service that the terminal is interested in receiving, is ready to receive, or is receiving, thereby avoiding the situation where the first MBS service cannot be correctly received due to the use of illegal BWP, and improving the stability of MBS service transmission. In addition, since the bandwidth of a single BWP is small, this can avoid bandwidth waste and save power.

[0009] In a second aspect, an embodiment of the present application provides a method for transmitting an MBS service, including:

[0010] The network device sends a first MBS service to the terminal on a first BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving.

[0011] Compared with the prior art, the network device can select the first BWP to send the first MBS service of the terminal, and the selected first BWP provides the MBS service that the terminal is interested in receiving, preparing to receive or is receiving, thereby avoiding the situation where the first MBS service cannot be correctly received due to the use of illegal BWP, and improving the stability of MBS service transmission. In addition, since the bandwidth of a single BWP is small, this can avoid bandwidth waste and save power.

[0012] In a third aspect, an embodiment of the present application provides a transmission device for an MBS service, including:

[0013] The receiving unit is configured to receive a first MBS service on a first BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving.

[0014] In a fourth aspect, an embodiment of the present application provides a transmission device for an MBS service, including:

[0015] The sending unit is configured to send a first MBS service to the terminal on a first BWP, wherein the first BWP provides the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving.

[0016] In a fifth aspect, an embodiment of the present application provides a terminal, comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing the steps of any method in the first aspect of the embodiment of the present application.

[0017] In a sixth aspect, an embodiment of the present application provides a network device, comprising a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing the steps of any method in the second aspect of the embodiment of the present application.

[0018] In the seventh aspect, an embodiment of the present application provides a chip, comprising: a processor, for calling and running a computer program from a memory, so that a device equipped with the chip executes part or all of the steps described in any method of the first aspect or the second aspect of the embodiment of the present application.

[0019] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps described in any method of the first aspect or the second aspect of the embodiment of the present application.

[0020] In a ninth aspect, an embodiment of the present application provides a computer program, wherein the computer program is operable to cause a computer to execute some or all of the steps described in any method of the first aspect or the second aspect of the embodiment of the present application. The computer program may be a software installation package. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following is a brief introduction to the drawings required for describing the embodiments or the prior art.

[0022] Figure 1A is a system architecture diagram of an exemplary communication system provided in an embodiment of the present application;

[0023] Figure 1B is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0024] Figure 2 It is a flow chart of a method for transmitting an MBS service provided in an embodiment of the present application;

[0025] Figure 3 This is a block diagram of the functional units of a transmission device for MBS services provided in an embodiment of the present application;

[0026] Figure 4 It is a block diagram of the functional units of another MBS service transmission device provided in an embodiment of the present application;

[0027] Figure 5 It is a block diagram of the functional units of another MBS service transmission device provided in an embodiment of the present application;

[0028] Figure 6It is a block diagram of the functional units of another MBS service transmission device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0030] The definitions or explanations of the concepts and terms involved in this application are as follows.

[0031] BWP Switch

[0032] For RRC connected terminals, there are three main BWP switching methods: RRC based BWP switching, Timer based BWP switching and DCI based BWP switching.

[0033] 1. RRC based BWP switching

[0034] It is mainly used to allow the terminal to enter a new BWP after the RRC reconfiguration message is sent or the secondary cell SCell is activated.

[0035] 2. Timer based BWP switching

[0036] The network device configures bwp-InactivityTimer for the terminal. If bwp-InactivityTimer times out, it switches to defaultDownlinkBWP.

[0037] 3. Downlink Control Information (DCI) based BWP switching, DCI is used to indicate the target BWP for switching.

[0038] For idle and inactive terminals, downlink reception is on the initial downlink BWP, where the initial Downlink BWP is configured as 20MHZ.

[0039] The technical solution of the embodiment of the present application can be applied to Figure 1A The exemplary communication system 100 shown includes a terminal 110 and a network device 120 , wherein the terminal 110 is in communication connection with the network device 120 .

[0040] The example communication system 100 can be, for example: a Global System of Mobilecommunication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an Advanced Long Term Evolution (LTE-A) system, a New Radio (NR) system, an evolved system of an NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, an NR-based access to unlicensed spectrum (NR-U) system, a Universal Mobile Telecommunication System (UMTS), a next generation communication system or other communication systems, etc.

[0041] Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (MachineType Communication, MTC), and vehicle to vehicle (Vehicle to Vehicle, V2V) communication, etc. The embodiments of the present application can also be applied to these communication systems. Optionally, the communication system in the embodiments of the present application can be applied to the carrier aggregation (Carrier Aggregation, CA) scenario, can also be applied to the dual connectivity (Dual Connectivity, DC) scenario, and can also be applied to the standalone (Standalone, SA) networking scenario.

[0042] The embodiments of the present application do not limit the spectrum to which they are applied. For example, the embodiments of the present application can be applied to licensed spectrum or unlicensed spectrum.

[0043] The terminal 110 in the embodiment of the present application may refer to a user device, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The terminal may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a relay device, a vehicle-mounted device, a wearable device, a terminal in a future 5G network or a terminal in a future evolved public land mobile communication network (PLMN), etc. The embodiment of the present application does not limit this. Figure 1B As shown, the terminal 110 in the terminal of the embodiment of the present application may include one or more of the following components: a processor 150, a memory 140 and an input / output device 130, and the processor 150 is communicatively connected with the memory 140 and the input / output device 130 respectively.

[0044] The network device 120 in the embodiment of the present application may be a device for communicating with a terminal. The network device may be an evolved NodeB (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN) scenario, or the network device may be a relay device, an access point, a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network, one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU), etc., which is not limited in the embodiment of the present application.

[0045] In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. The AAU implements some physical layer processing functions, radio frequency processing, and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or by the DU+AAU. It can be understood that the network device can be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU may be classified as a network device in an access network (radio access network, RAN), or the CU may be classified as a network device in a core network (core network, CN), which is not limited in the present application.

[0046] In an embodiment of the present application, the terminal 110 or the network device 120 includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer includes applications such as a browser, an address book, a word processing software, and an instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application, as long as it can communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a terminal, or a functional module in the terminal that can call and execute a program.

[0047] Currently, how to receive MBS services through BWP to ensure service reception stability and power saving is a problem that needs to be solved.

[0048] In view of the above problems, an embodiment of the present application proposes a transmission method for MBS services, which is described in detail below with reference to the accompanying drawings.

[0049] See also Figure 2 , Figure 2 1 is a flow chart of a method for transmitting an MBS service provided in an embodiment of the present application. As shown in the figure, the method includes:

[0050] Step 201: A network device sends a first MBS service to a terminal on a first BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving.

[0051] The embodiment of the present application defines an MBS BWP, which is a BWP used to send MBS services. Terminals in RRCidle and RRCinactive states can receive MBS services through the MBS BWP. The MBS BWP includes an initial BWP in the frequency domain. One or more MBS BWPs can be configured in a cell.

[0052] In a possible example, the method further includes: the network device sending BWP configuration update information to the terminal.

[0053] The BWP configuration update information includes, for example, an update of the number of BWPs or an update of services provided on the BWP.

[0054] In a possible example, the method further includes: the network device sends the MBS service information available on each BWP through a notification message, and the notification message includes a public message or a dedicated message.

[0055] The common message may be, for example, system information or a common control channel, and the dedicated message may be, for example, an RRC release message.

[0056] It can be seen that in this example, the configuration information of the BWP of the MBS service can be synchronized through the notification message, which is highly flexible.

[0057] In this possible example, the network device sends the MBS service information available on each BWP through a notification message, including: the network device sends the service service information available on the initial BWP and the incremental MBS service information available on the first MBS BWP through a notification message, and obtains all MBS service information available on the first MBS BWP.

[0058] Step 202: The terminal receives a first MBS service on a first bandwidth part BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving.

[0059] In a specific implementation, the terminal may select a BWP according to a service list of services that the terminal is interested in receiving, preparing to receive, or currently receiving. The service list may include BWP configurations that can provide reception of MBS services, and may also include BWP configurations for non-MBS services.

[0060] In a possible example, the first BWP is a BWP with the smallest bandwidth among multiple BWPs configured in the current cell, and the multiple BWPs all provide MBS services that the terminal is interested in receiving, is preparing to receive, or is currently receiving.

[0061] The current cell is the cell where the terminal currently resides.

[0062] For example, the multiple BWPs include a first BWP, a second BWP, and a third BWP, and the bandwidth of the first BWP is 20 MHZ, the bandwidth of the second BWP is 40 MHZ, and the bandwidth of the third BWP is 80 MHZ, then the terminal may choose to receive the first MBS service on the first BWP.

[0063] It can be seen that in this example, the terminal can select the BWP with the smallest bandwidth for reception according to the list of MBS services that it is interested in receiving, preparing to receive, or currently receiving, thereby achieving both reception of service data and power saving.

[0064] In a possible example, the first BWP is the only BWP in the BWP configured in the current cell that provides the first MBS service.

[0065] It can be seen that in this example, the terminal can select a suitable BWP for reception according to the list of MBS services that it is interested in receiving, preparing to receive, or currently receiving, thereby achieving both receiving service data and saving power.

[0066] In a possible example, the method further includes: the terminal performing BWP switching.

[0067] In a specific implementation, if the MBS service that the terminal is currently interested in receiving, preparing to receive, or is currently receiving is not compatible with the currently used BWP, the terminal needs to select a BWP that is compatible with the MBS service that the terminal is currently interested in receiving, preparing to receive, or is currently receiving to receive the service.

[0068] For example, the terminal can select an adapted BWP locally and send the index of the BWP to the network device to synchronize the switching request. After receiving the switching request, the network device reconfigures the BWP of the terminal.

[0069] For another example, the terminal may synchronize the MBS service that it is currently interested in receiving, preparing to receive, or currently receiving to the network device, and the network device may configure a suitable BWP for the terminal.

[0070] It can be seen that in this example, the network device can timely configure the BWP for the terminal to adapt to the MBS service that the terminal is currently interested in receiving, preparing to receive, or is receiving, thereby ensuring that the terminal can accurately receive the MBS service and improving the stability and efficiency of MBS service reception.

[0071] In this possible example, the triggering conditions for the BWP switching include: the available BWP list of the current cell configuration changes, and the BWP with the smallest bandwidth in the available BWP list is the second BWP, the second BWP is different from the first BWP, and the BWP included in the available BWP list provides the MBS service that the terminal is interested in receiving, preparing to receive, or is receiving.

[0072] For example, if a second BWP with a smaller bandwidth in the changed available BWP list also starts to support the first MBS service that the terminal is interested in receiving, preparing to receive, or currently receiving, the terminal chooses to receive the first MBS service on the second BWP.

[0073] It can be seen that in this example, when the available BWP list configured in the current cell changes, the terminal can determine whether BWP switching is required based on bandwidth size comparison, and trigger BWP switching when the BWP of the minimum bandwidth changes.

[0074] In this possible example, the triggering condition for the BWP switching includes: the BWP list configured in the current cell changes, and the MBS service that can be provided by the first BWP in the changed BWP list is the same as or completely different from the MBS service that the terminal is interested in receiving, preparing to receive, or is receiving.

[0075] The MBS service that can be provided by the first BWP in the changed BWP list is partially the same as or completely different from the MBS service that the terminal is interested in receiving, preparing to receive, or is receiving, which may correspond to the following two situations.

[0076] The first one is that the MBS service that the first BWP can provide is empty, that is, the first BWP is no longer configured to transmit the MBS service. In this case, it is obvious that the first BWP can no longer transmit any MBS service.

[0077] The second type is that the first BWP can only provide other MBS services except the first MBS service. In this case, since the first BWP cannot provide all the MBS services that the terminal is interested in receiving, preparing to receive or is currently receiving, for the sake of stability and comprehensiveness of transmission services, the first BWP is no longer the preferred BWP for transmitting the MBS services that the terminal is interested in receiving, preparing to receive or is currently receiving, that is, the terminal will give priority to the BWP that can adapt to all the MBS services that the terminal is interested in receiving, preparing to receive or is currently receiving.

[0078] It can be seen that in this example, when the available BWP list configured in the current cell changes, the terminal can determine whether to trigger BWP switching based on whether the BWP provides conditions for all MBS services that the terminal is interested in receiving, preparing to receive, or currently receiving.

[0079] In this possible example, the triggering condition for the BWP switching includes: the MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving changes, and the MBS service that the first BWP can provide is partially the same as or completely different from the MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving.

[0080] The trigger conditions described in this example correspond to the following three situations.

[0081] The first one is that a second MBS service is newly added to the MBS services that the terminal is interested in receiving, preparing to receive, or currently receiving, and the second MBS service is not an MBS service that can be provided by the first BWP.

[0082] The second type is that the MBS service that the terminal is interested in receiving, preparing to receive or is currently receiving reduces the first MBS service, that is, the terminal is no longer interested in receiving, preparing to receive or is currently receiving the first MBS service, and will no longer receive the first MBS service. Subsequently, the terminal can select an adapted BWP according to the new MBS service reception requirements.

[0083] The third type is that the MBS service that the terminal is interested in receiving, preparing to receive or currently receiving is reduced to zero, that is, the terminal has no MBS service that it is interested in receiving, preparing to receive or currently receiving. In this state, the terminal switches the transmission resource of the local device receiving the service service to the initial BWP.

[0084] It can be seen that in this example, when the MBS service that the terminal is interested in receiving, preparing to receive or is currently receiving changes, the terminal will determine whether the first BWP can continue to provide the MBS service that the terminal is interested in receiving, preparing to receive or is currently receiving to determine whether to trigger BWP switching.

[0085] In this possible example, the change in the MBS service that the terminal is interested in receiving, ready to receive, or is receiving refers to a state in which the terminal is no longer interested in receiving, ready to receive, or no longer receiving the first MBS service.

[0086] In this possible example, the state that the terminal is no longer interested in receiving, is not prepared to receive, or no longer receives the first MBS service is determined in the following manner: the terminal begins to no longer be interested in receiving, is not prepared to receive, or no longer receives the first MBS service, and starts a switching timer. After the switching timer times out, if the terminal is still no longer interested in receiving, is not prepared to receive, or no longer receives the first MBS service, it is determined that the terminal is no longer interested in receiving, is not prepared to receive, or no longer receives the first MBS service.

[0087] The value of the switch timer is configured by the network side, agreed upon by the protocol, or implemented by the terminal itself.

[0088] It can be seen that in this example, the timer mechanism can avoid frequent BWP switching in response to the situation where the user switches back quickly, thereby improving service transmission stability and saving power.

[0089] In this possible example, the change in the MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving means that the MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving is reduced to zero;

[0090] The BWP switching refers to the terminal switching the BWP for receiving service services by the local device to the initial BWP.

[0091] It can be seen that in this example, when the terminal no longer receives the MBS service, it can switch to the initialBWP in time to receive other non-MBS services.

[0092] In this possible example, the method further includes: the terminal receiving MBS service information available on each BWP through a notification message, where the notification message includes a public message or a dedicated message.

[0093] The common message may be, for example, system information or a common control channel, and the dedicated message may be, for example, an RRC release message.

[0094] It can be seen that in this example, the configuration information of the BWP of the MBS service can be synchronized through the notification message, which is highly flexible.

[0095] In this possible example, the terminal receives MBS service information available on each BWP through a notification message, including: the terminal receives service service information available on the initial BWP and incremental MBS service information available on the first MBS BWP through a notification message, and obtains all MBS service information available on the first MBS BWP.

[0096] For example, the service list provided on the initial BWP indicated in the notification message is: service 1 and service 2; the incremental service list provided on MBS BWP1 in the notification message is: service 3 and service 4. Because MBS BWP1 includes the initial BWP, only the incremental part provided on MBS BWP1, that is, the service list that cannot be provided on the initial BWP, can be notified.

[0097] The terminal learns that service 1 and service 2 are provided on the initial BWP, and receives incremental services service 3 and service 4 from MBS BWP1. The terminal then learns that service 1, service 2 and service 3, service 4 can be received on MBS BWP1.

[0098] It can be seen that in this example, since the data volume of the incremental MBS service information that can be provided on the first MBS BWP is relatively small, the signaling interaction data volume can be saved and the interaction efficiency can be improved.

[0099] In addition, the terminal may also receive the first service information that can be provided by the initial BWP and the second service information that can be provided by the first MBS BWP through a notification message, and obtain all MBS service information that can be provided by the first MBS BWP.

[0100] The second service business information includes the first service business information.

[0101] For example, the notification message indicates that the service list provided on the initial BWP is: service 1 and service 2, and indicates that the service list provided on the MBS BWP1 is: service 1, service 2 and service 3, service 4.

[0102] It can be seen that in this embodiment, the terminal can select the first BWP to receive the first MBS service of this end, and the selected first BWP provides the MBS service that the terminal is interested in receiving, is ready to receive, or is receiving, thereby avoiding the situation where the first MBS service cannot be correctly received due to the use of illegal BWP, and improving the stability of MBS service transmission. In addition, since the bandwidth of a single BWP is small, this can avoid bandwidth waste and save power.

[0103] The embodiment of the present application provides a transmission device for MBS services, which can be a terminal. Specifically, the transmission device for MBS services is used to execute the steps executed by the terminal in the above MBS service transmission method. The transmission device for MBS services provided in the embodiment of the present application may include modules corresponding to the corresponding steps.

[0104] The embodiment of the present application can divide the function modules of the transmission device of the MBS service according to the above method example. For example, each function module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software function modules. The division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0105] In the case of dividing each functional module into corresponding functional modules, Figure 3 A possible structural diagram of the transmission device 3 for the MBS service involved in the above embodiment is shown. Figure 3As shown, the transmission device 3 of the MBS service includes a receiving unit 30,

[0106] The receiving unit 30 is configured to receive a first MBS service on a first bandwidth part BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving.

[0107] In a possible example, the first BWP is a BWP with the smallest bandwidth among multiple BWPs configured in the current cell, and the multiple BWPs all provide MBS services that the terminal is interested in receiving, is preparing to receive, or is currently receiving.

[0108] In a possible example, the first BWP is the only BWP in the BWP configured in the current cell that provides the first MBS service.

[0109] In a possible example, the device further includes a switching unit 31, and the switching unit 31 is configured to perform BWP switching.

[0110] In a possible example, the triggering condition of the BWP switching includes:

[0111] The available BWP list of the current cell configuration changes, and the BWP with the smallest bandwidth in the available BWP list is the second BWP, which is different from the first BWP. The BWP included in the available BWP list provides the MBS service that the terminal is interested in receiving, preparing to receive, or is receiving.

[0112] In a possible example, the triggering condition of the BWP switching includes:

[0113] The BWP list configured in the current cell changes, and the MBS services that can be provided by the first BWP in the changed BWP list are partially the same as or completely different from the MBS services that the terminal is interested in receiving, preparing to receive, or currently receiving.

[0114] In a possible example, the triggering condition of the BWP switching includes:

[0115] The MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving changes, and the MBS service that the first BWP can provide is partially the same as or completely different from the MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving.

[0116] In a possible example, the change in the MBS service that the terminal is interested in receiving, ready to receive, or is receiving means that the terminal is no longer interested in receiving, is not ready to receive, or is no longer receiving the first MBS service.

[0117] In a possible example, the state that the terminal is no longer interested in receiving, is not ready to receive, or no longer receives the first MBS service is determined in the following manner:

[0118] The terminal begins to no longer be interested in receiving, or is not prepared to receive, or no longer receives the first MBS service, and starts a switching timer. After the switching timer times out, if the terminal still no longer is interested in receiving, or is not prepared to receive, or no longer receives the first MBS service, it is determined that the terminal is in a state of no longer being interested in receiving, or is not prepared to receive, or no longer receiving the first MBS service.

[0119] In a possible example, the change in the MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving means that the MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving is reduced to zero;

[0120] The BWP switching refers to the terminal switching the transmission resource for receiving the service business of the local device to the initial BWP.

[0121] In a possible example, the receiving unit 30 is further configured to: receive the MBS service information available on each BWP via a notification message, where the notification message includes a public message or a dedicated message.

[0122] In this possible example, in terms of receiving the MBS service information available on each BWP through a notification message, the receiving unit 30 is specifically used to: receive the service service information available on the initial BWP and the incremental MBS service information available on the first MBS BWP through a notification message, and obtain all MBS service information available on the first MBS BWP.

[0123] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here. Of course, the transmission device 3 for MBS service provided in the embodiment of the present application includes but is not limited to the above modules, for example: the transmission device 3 for MBS service may also include a storage unit 32. The storage unit 32 may be used to store the program code and data of the transmission device 3 for MBS service.

[0124] In the case of using an integrated unit, the structural diagram of the transmission device 4 for MBS service provided in the embodiment of the present application is as follows: Figure 4 As shown. Figure 4In the embodiment, the transmission device 4 of the MBS service includes: a processing module 40 and a communication module 41. The processing module 40 is used to control and manage the actions of the transmission device 4 of the MBS service, for example, the steps performed by the receiving unit 30 and the switching unit 31, and / or other processes for performing the technology described herein. The communication module 41 is used to support the interaction between the transmission device 4 of the MBS service and other devices. Figure 4 As shown, the MBS service transmission device 4 may further include a storage module 42 , and the storage module 42 is used to store program codes and data of the MBS service transmission device 4 , such as storing the content stored in the above-mentioned storage unit 32 .

[0125] Among them, the processing module 40 can be a processor or a controller, for example, a central processing unit (CPU), a general processor, a digital signal processor (DSP), an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication module 41 can be a transceiver, an RF circuit or a communication interface, and the like. The storage module 42 can be a memory.

[0126] All relevant contents of each scenario involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here. The above MBS service transmission device 3 and the MBS service transmission device 4 can both execute the above Figure 2 The steps performed by the terminal in the MBS service transmission method are shown.

[0127] The embodiment of the present application provides another MBS service transmission device, which can be a network device. Specifically, the MBS service transmission device is used to execute the steps performed by the network device in the above MBS service transmission method. The MBS service transmission device provided in the embodiment of the present application may include modules corresponding to the corresponding steps.

[0128] The embodiment of the present application can divide the function modules of the transmission device of the MBS service according to the above method example. For example, each function module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software function modules. The division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0129] In the case of dividing each functional module into corresponding functional modules, Figure 5 A possible structural diagram of the transmission device of the MBS service involved in the above embodiment is shown. Figure 5 As shown, the transmission device 5 for MBS service includes a sending unit 50,

[0130] The sending unit 50 is configured to send a first MBS service to the terminal on a first BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving.

[0131] In a possible example, the first BWP is a BWP with the smallest bandwidth among multiple BWPs configured in the current cell, and the multiple BWPs all provide MBS services that the terminal is interested in receiving, is preparing to receive, or is currently receiving.

[0132] In a possible example, the first BWP is the only BWP in the BWP configured in the current cell that provides the first MBS service.

[0133] In a possible example, the sending unit 50 is further configured to: send the MBS service information available on each BWP through a notification message, where the notification message includes a public message or a dedicated message.

[0134] In this possible example, in terms of sending the MBS service information available on each BWP through a notification message, the sending unit 50 is specifically used to: send the service service information available on the initial BWP and the incremental MBS service information available on the first MBS BWP through a notification message, and obtain all MBS service information available on the first MBS BWP.

[0135] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here. Of course, the transmission device 5 for MBS service provided in the embodiment of the present application includes but is not limited to the above modules, for example: the transmission device 5 for MBS service may also include a storage unit 51. The storage unit 51 may be used to store program codes and data of the transmission device for the MBS service.

[0136] In the case of adopting an integrated unit, the structural diagram of the transmission device of the MBS service provided in the embodiment of the present application is as follows: Figure 6 As shown. Figure 6In the embodiment, the transmission device 6 of the MBS service includes: a processing module 60 and a communication module 61. The processing module 60 is used to control and manage the actions of the transmission device 6 of the MBS service, for example, the steps performed by the sending unit 50 and the storage unit 51, and / or other processes for performing the technology described herein. The communication module 61 is used to support the interaction between the transmission device 6 of the MBS service and other devices. Figure 6 As shown, the MBS service transmission device 6 may further include a storage module 62 , and the storage module 62 is used to store program codes and data of the MBS service transmission device 6 , such as storing the content stored in the above-mentioned storage unit 51 .

[0137] Among them, the processing module 60 can be a processor or a controller, for example, a central processing unit (CPU), a general processor, a digital signal processor (DSP), an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication module 61 can be a transceiver, an RF circuit or a communication interface, and the like. The storage module 62 can be a memory.

[0138] All relevant contents of each scenario involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here. The above MBS service transmission device 5 and the MBS service transmission device 6 can both execute the above Figure 2 The steps performed by the network device in the MBS service transmission method are shown.

[0139] An embodiment of the present application also provides a chip, wherein the chip includes a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes some or all of the steps described by the terminal in the above method embodiment.

[0140] An embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute some or all of the steps described by the terminal in the above method embodiment.

[0141] An embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps described by the network-side device in the above method embodiment.

[0142] The present application also provides a computer program product, wherein the computer program product includes a computer program, and the computer program is operable to enable a computer to execute some or all of the steps described by the terminal in the above method embodiment. The computer program product can be a software installation package.

[0143] The steps of the method or algorithm described in the embodiment of the present application can be implemented in a hardware manner, or can be implemented by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory (Random Access Memory, RAM), a flash memory, a read-only memory (Read Only Memory, ROM), an erasable programmable read-only memory (Erasable Programmable ROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), a register, a hard disk, a mobile hard disk, a read-only compact disk (CD-ROM) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in an access network device, a target network device, or a core network device. Of course, the processor and the storage medium can also be present in an access network device, a target network device, or a core network device as discrete components.

[0144] Those skilled in the art should be aware that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiments of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0145] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above description is only the specific implementation method of the embodiments of the present application and is not intended to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A method for transmitting a multicast / broadcast service MBS service, characterized in that: include: The terminal receives a first MBS service on a first bandwidth part BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving; The terminal performs BWP switching, and the triggering conditions of the BWP switching include: the available BWP list configured in the current cell changes, and the BWP with the smallest bandwidth in the available BWP list is the second BWP, the second BWP is different from the first BWP, and the BWP included in the available BWP list provides the MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving; or, the BWP list configured in the current cell changes, and the MBS service that the first BWP in the changed BWP list can provide is partially the same as or completely different from the MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving; or, the MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving changes, and the MBS service that the first BWP can provide is partially the same as or completely different from the MBS service that the terminal is interested in receiving, preparing to receive, or is currently receiving.

2. The method according to claim 1, characterized in that The first BWP is a BWP with the smallest bandwidth among multiple BWPs configured in the current cell, and the multiple BWPs all provide MBS services that the terminal is interested in receiving, is ready to receive, or is currently receiving.

3. The method according to claim 1, characterized in that The first BWP is the only BWP among the BWPs configured in the current cell that provides the first MBS service.

4. The method according to claim 1, characterized in that: The change in the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving means that the terminal is no longer interested in receiving, is not ready to receive, or is no longer receiving the first MBS service.

5. The method according to claim 4, characterized in that The state that the terminal is no longer interested in receiving, is not ready to receive, or no longer receives the first MBS service is determined in the following manner: The terminal begins to no longer be interested in receiving, or is not prepared to receive, or no longer receives the first MBS service, and starts a switching timer. After the switching timer times out, if the terminal still no longer is interested in receiving, or is not prepared to receive, or no longer receives the first MBS service, it is determined that the terminal is in a state of no longer being interested in receiving, or is not prepared to receive, or no longer receiving the first MBS service.

6. The method according to claim 1, characterized in that The change in the MBS service that the terminal is interested in receiving, preparing to receive, or currently receiving means that the MBS service that the terminal is interested in receiving, preparing to receive, or currently receiving is reduced to zero; The BWP switching refers to the terminal switching the transmission resource for receiving the service business of the local device to the initial BWP.

7. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: The terminal receives the MBS service information available on each BWP through a notification message, where the notification message includes a common message or a dedicated message.

8. The method according to claim 7, characterized in that The terminal receives the MBS service information available on each BWP through a notification message, including: The terminal receives the service service information that can be provided by the initial BWP and the incremental MBS service information that can be provided by the first MBS BWP through a notification message, and obtains all MBS service information that can be provided by the first MBS BWP.

9. A method for transmitting MBS services, characterized in that: include: A network device sends a first MBS service to a terminal on a first BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving, and the terminal performs BWP switching under any of the following triggering conditions: an available BWP list configured for a current cell changes, and the BWP with the smallest bandwidth in the available BWP list is a second BWP, the second BWP is different from the first BWP, and the BWP included in the available BWP list provides the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving; or, the BWP list configured for the current cell changes, and the MBS service that the first BWP in the changed BWP list can provide is partially the same as or completely different from the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving; or, the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving changes, and the MBS service that the first BWP can provide is partially the same as or completely different from the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving.

10. The method according to claim 9, characterized in that The first BWP is a BWP with the smallest bandwidth among multiple BWPs configured in the current cell, and the multiple BWPs all provide MBS services that the terminal is interested in receiving, is ready to receive, or is currently receiving.

11. The method according to claim 9, characterized in that The first BWP is the only BWP among the BWPs configured in the current cell that provides the first MBS service.

12. The method according to claim 9, characterized in that The method further comprises: The network device sends BWP configuration update information to the terminal.

13. The method according to any one of claims 9 to 12, characterized in that: The method further comprises: The network device sends the MBS service information available on each BWP through a notification message, where the notification message includes a public message or a dedicated message.

14. The method according to claim 13, characterized in that The network device sends the MBS service information available on each BWP through a notification message, including: The network device sends the service service information that can be provided by the initial BWP and the incremental MBS service information that can be provided on the first MBS BWP through a notification message, and obtains all MBS service information that can be provided on the first MBS BWP.

15. A transmission device for MBS service, characterized in that: include: A receiving unit, configured to receive a first MBS service on a first BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving; a switching unit, configured to perform BWP switching of the terminal, wherein a triggering condition of the BWP switching includes: a list of available BWPs configured for a current cell changes, and the BWP with the smallest bandwidth in the available BWP list is a second BWP, the second BWP is different from the first BWP, and the BWPs included in the available BWP list provide the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving; or, the list of BWPs configured for the current cell changes, and the MBS service that the first BWP in the changed BWP list can provide is partially the same as or completely different from the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving; or, the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving changes, and the MBS service that the first BWP can provide is partially the same as or completely different from the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving.

16. A transmission device for MBS service, characterized in that: include: A sending unit, configured to send a first MBS service to a terminal on a first BWP, wherein the first BWP provides an MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving, and the terminal performs BWP switching under any of the following triggering conditions: an available BWP list configured for a current cell changes, and the BWP with the smallest bandwidth in the available BWP list is a second BWP, the second BWP is different from the first BWP, and the BWP included in the available BWP list provides the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving; or, the BWP list configured for the current cell changes, and the MBS service that the first BWP in the changed BWP list can provide is partially the same as or completely different from the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving; or, the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving changes, and the MBS service that the first BWP can provide is partially the same as or completely different from the MBS service that the terminal is interested in receiving, is ready to receive, or is currently receiving.

17. A terminal, characterized in that: The method comprises a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for executing the steps in the method according to any one of claims 1 to 8.

18. A network device, characterized in that: The method comprises a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for executing the steps in the method according to any one of claims 9 to 14.

19. A computer-readable storage medium, characterized in that: It stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute the method according to any one of claims 1-8 or 9-14.

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