CN114339813A

CN114339813A - Transmission method and related device of MBS (multicast broadcast multicast service)

Info

Publication number: CN114339813A
Application number: CN202011069072.3A
Authority: CN
Inventors: 韩立锋
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2022-04-12

Abstract

The embodiment of the application discloses a transmission method and a related device of MBS service, wherein the method comprises the following steps: a terminal receives a first MBS service on a first bandwidth part BWP, wherein the first BWP provides MBS services that the terminal is interested in receiving or is ready to receive or is receiving. Therefore, the embodiment of the application realizes receiving the MBS service through BWP, ensures the stability of MBS service transmission and improves the endurance of the terminal.

Description

Transmission method and related device of MBS (multicast broadcast multicast service)

Technical Field

The present application relates to the field of communications technologies, and in particular, to a transmission method for MBS service and a related device.

Background

A maximum supported frequency bandwidth of a New Radio Network (NR) communication system of a fifth generation mobile communication technology (5G for short) reaches 400M, and if a terminal is expected to be the same as a working mechanism in a Long Term Evolution (LTE) communication system, a receiving and transmitting working bandwidth of each time supports a full-band bandwidth, which is unnecessary, and thus a high requirement on Radio frequency performance of the terminal is provided, integration of a chip is difficult to achieve, and cost is very high. Therefore, a concept of a Bandwidth part (BWP) is proposed. The terminal may operate on different sub-band BWPs and the subcarrier spacing on these BWPs may be different, thereby reducing terminal cost and power consumption.

In a Multicast/Broadcast Service (MBS) Service, a base station may transmit the MBS Service in a Multicast, Broadcast, unicast, or other form, and a terminal may receive the MBS Service in a Radio Resource Control (RRC) idle state, an RRC inactive state, or an RRC connection connected state.

In the 5G system, how to receive MBS service through BWP for a terminal to ensure the service reception stability and power saving is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a transmission method and a related device of an MBS service, which aim to realize the purpose of receiving the MBS service through BWP, ensure the stability of MBS service transmission and simultaneously improve the endurance of a terminal.

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

a terminal receives a first MBS service on a first bandwidth part BWP, wherein the first BWP provides MBS services that the terminal is interested in receiving or is ready to receive or is receiving.

Compared with the prior art, the terminal can select the first BWP to receive the first MBS service of the local terminal, and the selected first BWP provides the MBS service that the terminal is interested in receiving or preparing to receive or is receiving, thereby avoiding the situation that the first MBS service cannot be correctly received without using an illegal BWP, improving the stability of MBS service transmission.

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

the network equipment sends a first MBS service to a terminal on a first BWP, wherein the first BWP provides MBS services which the terminal is interested in receiving or prepares to receive or is receiving.

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 or preparing to receive or is receiving, thereby avoiding the situation that the first MBS service cannot be correctly received without using an illegal BWP, improving the stability of MBS service transmission.

In a third aspect, an embodiment of the present application provides a device for transmitting an MBS service, including:

a receiving unit, configured to receive a first MBS service on a first BWP, where the first BWP provides the MBS service that the terminal is interested in receiving or preparing to receive or receiving.

In a fourth aspect, an embodiment of the present application provides a device for transmitting an MBS service, including:

a sending unit, configured to send a first MBS service to a terminal on a first BWP, where the first BWP provides the MBS service that the terminal is interested in receiving or preparing to receive or receiving.

In a fifth aspect, embodiments of the present application provide a terminal, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for performing the steps of any of the methods of the first aspect of the embodiments of the present application.

In a sixth aspect, embodiments of the present application provide a network device, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for performing the steps of any of the methods of the second aspect of the embodiments of the present application.

In a seventh aspect, an embodiment of the present application provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the device provided with the chip executes part or all of the steps described in the method of any one of the first aspect and the second aspect of the embodiment of the application.

In an eighth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform part or all of the steps described in any one of the methods of the first aspect or the second aspect of the present application.

In a ninth aspect, embodiments of the present application provide a computer program, where the computer program is operable to cause a computer to perform some or all of the steps as described in any of the methods of the first or second aspects of the embodiments of the present application. The computer program may be a software installation package.

Drawings

Reference will now be made in brief to the drawings that are needed in describing embodiments or prior art.

Fig. 1A is a system architecture diagram of an example communication system provided by an embodiment of the present application;

fig. 1B is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 2 is a flowchart illustrating a transmission method of an MBS service according to an embodiment of the present application;

fig. 3 is a block diagram illustrating functional units of a MBS service transmission apparatus according to an embodiment of the present disclosure;

fig. 4 is a block diagram of functional units of a transmission apparatus for another MBS service provided in the embodiment of the present application;

fig. 5 is a block diagram illustrating functional units of a transmission apparatus for another MBS service according to an embodiment of the present application;

fig. 6 is a block diagram illustrating functional units of another MBS service transmission apparatus according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

The definitions or explanations of the concepts and terms referred to in this application are as follows.

BWP handover

For the RRC connected state terminal, there are three main ways for BWP handover: RRC based BWP handover, Timer based BWP handover, and DCI based BWP handover.

1. RRC-based BWP handover

The method is mainly used for enabling the terminal to enter a new BWP after RRC reconfiguration message issuing or secondary cell SCell activation.

2. Timer based BWP handoff

The network device configures bwp-InactivtyTimer for the terminal, and if bwp-InactivtyTimer is overtime, the defaultDownlinBWP is switched in.

3. Downlink Control Information (DCI) based BWP handover, where the DCI indicates a target BWP of the handover.

For idle, inactive terminals, the Downlink reception is on an initial Downlink BWP, where the initial Downlink BWP is configured to be 20 MHZ.

The technical solution of the embodiment of the present application may be applied to the example communication system 100 shown in fig. 1A, where the example communication system 100 includes a terminal 110 and a network device 120, and the terminal 110 is communicatively connected to the network device 120.

The example communication system 100 may be, for example: a Global System for Mobile communications (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 (Long Term Evolution, LTE) System, an Advanced Long Term Evolution (LTE-a) System, a New Radio (NR) System, an Evolution System of an NR System, an LTE (LTE-based Access to unlicensed spectrum, LTE-U) System on unlicensed spectrum, an NR (NR-based Access to unlicensed spectrum) System on unlicensed spectrum, a UMTS (Universal Mobile telecommunications System), or other next generation communication systems.

Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technology, mobile Communication systems will support not only conventional Communication, but also, for example, Device-to-Device (D2D) Communication, Machine-to-Machine (M2M) Communication, Machine Type Communication (MTC), and Vehicle-to-Vehicle (V2V) Communication, and the embodiments of the present application can also be applied to these Communication systems. Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.

The frequency spectrum of the application is not limited in the embodiment of the present application. For example, the embodiments of the present application may be applied to a licensed spectrum and may also be applied to an unlicensed spectrum.

A terminal 110 in the embodiments of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user 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 Network (PLMN), and the like, which are not limited in this embodiment. As shown in fig. 1B, the terminal 110 in the terminal according to the embodiment of the present disclosure may include one or more of the following components: the device comprises a processor 110, a memory 120 and an input-output device 130, wherein the processor 110 is respectively connected with the memory 120 and the input-output device 130 in a communication mode.

The network device 120 in this embodiment may be a device for communicating with a terminal, where the network device may be an evolved NodeB (eNB or eNodeB) in an LTE system, and may also be 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 (including multiple antenna panels) of base stations in a 5G system, or may also be a network node forming a gNB or a transmission point, such as a baseband unit (BBU) or a Distributed Unit (DU), and the present embodiment is not limited.

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 part of the function of the gNB and the DU implements part of the function of the gNB. For example, the CU is responsible for processing non-real-time protocols and services, and implementing functions of a Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing and active antenna related functions. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or by the DU + AAU under this architecture. It is to be understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

In the embodiment of the present application, the terminal 110 or the network device 120 includes a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of 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 referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), 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 comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. Furthermore, the embodiment of the present application does not particularly limit the specific structure of the execution main body of the method provided by the embodiment of the present application, as long as the communication can be performed according to the method provided by the embodiment of the present application by running the program recorded with the code of the method provided by the embodiment of the present application, for example, the execution main body of the method provided by the embodiment of the present application may be a terminal, or a functional module in the terminal that can call the program and execute the program.

At present, how to receive MBS service through BWP to ensure service reception stability and power saving is a problem to be solved.

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

Referring to fig. 2, fig. 2 is a schematic flowchart illustrating a transmission method for MBS service according to an embodiment of the present application, where as shown in the figure, the method includes:

step 201, the network device sends a first MBS service to the terminal on a first BWP, where the first BWP provides the MBS service that the terminal is interested in receiving or preparing to receive or is receiving.

The embodiment of the present application defines MBS BWP, which is a BWP dedicated to transmitting MBS services, and terminals in RRC idle and RRC inactive states may receive MBS services through the MBS BWP. Wherein, the MBS BWP comprises initial BWP in frequency domain. One or more MBS BWPs may be configured in one cell.

In one possible example, the method further comprises: the network device sends the BWP configuration update information to the terminal.

The BWP configuration update information includes, for example, an update of the BWP number or an update of a service provided on the BWP.

In one possible example, the method further comprises: the network device transmits MBS service information available on each BWP through a notification message, which includes a common message or a dedicated message.

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.

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

In this possible example, the network device sends MBS service information available on each BWP through a notification message, including: the network device sends service information that the initial BWP can provide and incremental MBS service information that can be provided on the first MBS BWP through a notification message, so as to obtain all MBS service information that can be provided on the first MBS BWP.

Step 202, the terminal receives the first MBS service on the first bandwidth part BWP, wherein the first BWP provides the MBS service that the terminal is interested in receiving or preparing to receive or is receiving.

In a specific implementation, the terminal may select BWP according to a list of service services that are interested in receiving or are ready to receive or are receiving. The service list may include BWP configuration for providing MBS service reception, or BWP configuration for non-MBS service.

In one possible example, the first BWP is a BWP with the smallest bandwidth among BWPs configured for a current cell, and the BWPs each provide MBS services that the terminal is interested in receiving or preparing to receive or is receiving.

And the current cell is the cell where the terminal currently resides.

For example, the plurality of BWPs include a first BWP, a second BWP, and a third BWP, and the bandwidth of the first BWP is 20MHZ, the bandwidth of the second BWP is 40MHZ, and the bandwidth of the third BWP is 80MHZ, the terminal may select to receive the first MBS service on the first BWP.

It can be seen that, in this example, the terminal may select the BWP with the smallest bandwidth for receiving according to the MBS service list interested in receiving or ready to receive or receiving, so as to achieve both receiving service data and saving power.

In one possible example, the first BWP provides the BWP of the first MBS service for only one of the BWPs configured for the current cell.

It can be seen that, in this example, the terminal may select an appropriate BWP for reception according to the MBS service list that is interested in receiving or is ready to receive or is receiving, so as to achieve both service data reception and power saving.

In one possible example, the method further comprises: the terminal performs BWP handover.

In a specific implementation, if the MBS service currently interested in being received or prepared to be received or being received by the terminal is not suitable for the currently used BWP, the terminal needs to select the BWP adapted to the MBS service currently interested in being received or prepared to be received or being received for service reception.

For example, the terminal may select an adaptive BWP and send an index of the BWP to the network device to synchronize the handover request, and the network device reconfigures the BWP of the terminal after receiving the handover request.

As another example, the terminal may synchronize MBS services currently interested in being received or ready to be received or being received to the network device, and the network device configures the terminal with an appropriate BWP.

Therefore, in this example, the network device may configure, in time, the BWP adapted to the MBS service that the terminal is currently interested in receiving or is ready to receive or is receiving, so as to ensure that the terminal can accurately receive the MBS service, and improve the stability and efficiency of receiving the MBS service.

In this possible example, the trigger condition for BWP handover includes: 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, where the second BWP is different from the first BWP, and the BWPs included in the available BWP list provide MBS services that the terminal is interested in receiving or preparing to receive or receiving.

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

It can be seen that, in this example, for a case where the available BWP list of the current cell configuration changes, the terminal may determine whether BWP handover is required based on the bandwidth size ratio, and trigger BWP handover when the BWP of the minimum bandwidth changes.

In this possible example, the trigger condition for BWP handover 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 partially the same as or completely different from the MBS service that the terminal is interested in receiving or is ready to receive or is receiving.

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 or is ready to receive or is receiving, and may correspond to the following two cases.

First, the MBS service that the first BWP can provide is empty, i.e. the first BWP is no longer configured to transmit the MBS service, in this case, it is obvious that the first BWP cannot transmit any MBS service any more.

Second, the first BWP can only provide other MBS services except the first MBS service, in this case, the first BWP cannot provide all MBS services that the terminal is interested in receiving or ready to receive or is receiving, so that the first BWP is no longer preferred by the terminal for transmitting the MBS services that the terminal is interested in receiving or ready to receive or is receiving, in view of stability and comprehensiveness of the transmission service, i.e. the terminal preferentially selects the BWP that can adapt to all MBS services that the terminal is interested in receiving or ready to receive or is receiving.

It can be seen that, in this example, for a case where the available BWP list of the current cell configuration changes, the terminal may determine whether to trigger BWP handover based on whether the BWP provides a condition that all MBS services the terminal is interested in receiving or preparing to receive or is receiving.

In this possible example, the trigger condition for BWP handover includes: the MBS service that the terminal is interested in receiving or preparing to receive or is 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 or preparing to receive or is receiving.

The trigger conditions described in this example correspond to the following three cases.

First, the terminal is interested in receiving or preparing to receive or adding a second MBS service to the MBS service being received, where the second MBS service is not an MBS service that can be provided by the first BWP.

Secondly, the terminal is interested in receiving or prepares to receive or is receiving the MBS service that reduces the first MBS service, i.e. the terminal no longer is interested in receiving or prepares to receive or is receiving the MBS service that is being received by the first MBS service and will not receive the first MBS service any more, and then can select the adapted BWP according to the new MBS service receiving requirement.

Thirdly, the MBS service that the terminal is interested in receiving or ready to receive or is receiving is reduced to null, that is, the terminal is not interested in receiving or ready to receive or is not receiving the MBS service, and in this state, the terminal switches the transmission resource of the service received by the local device to the initial BWP.

It can be seen that, in this example, for the case that the MBS service that the terminal is interested in receiving or is ready to receive or is receiving changes, the terminal may determine whether the first BWP can continue to provide the MBS service that the terminal is interested in receiving or is ready to receive or is receiving, so as to determine whether to trigger BWP handover.

In this possible example, the MBS service change that the terminal is interested in receiving or ready to receive or is receiving means a state of the MBS service that the terminal is no longer interested in receiving or not ready to receive or no longer receiving for the first MBS service.

In this possible example, the state that the terminal is no longer interested in receiving or is not ready to receive or is no longer receiving the first MBS service is determined by the following method: the terminal starts to receive or is not ready to receive the first MBS service any more, starts a switching timer, and determines the state that the terminal is not interested in or is not ready to receive the first MBS service any more after the switching timer is overtime if the terminal is still not interested in or is not ready to receive the first MBS service any more.

The value of the switch timer of the switching timer is configured by the network side, or agreed by the protocol, or is realized by the terminal.

As can be seen, in this example, frequent BWP switching can be avoided by using the timer mechanism for the case that the user switches back quickly, so as to improve the stability of service transmission and save power.

In this possible example, the MBS service that the terminal is interested in receiving or is ready to receive or is receiving changes means that the MBS service that the terminal is interested in receiving or is ready to receive or is receiving decreases to null;

the BWP switching means that the terminal switches the BWP where the local device receives the service to the initial BWP.

As can be seen, in this example, for the case that the terminal no longer receives the MBS service, the terminal may switch to the initial BWP in time to receive other non-MBS services.

In this possible example, the method further comprises: the terminal receives the available MBS service information on each BWP through a notification message, wherein the notification message comprises a public message or a special message.

In this possible example, the terminal receives MBS service information available on each BWP through a notification message, which includes: the terminal receives the service information provided by the initial BWP and the incremental MBS service information provided on the first MBS BWP through the notification message, so as to obtain all the MBS service information provided on the first MBS BWP.

For example, the service list provided on the initial BWP is indicated in the notification message as follows: service1 and service 2; the list of the increment service provided on the MBS BWP1 in the notification message is: service3, service 4. Since the MBS BWP1 includes the initial BWP, only the incremental part provided on the MBS BWP1, i.e., the list of services that cannot be provided by the initial BWP, may be notified.

The terminal learns that the service1 and the service2 are provided on the initial BWP, and receives the provided incremental service3 and service4 from the MBS BWP 1. The terminal knows that service1, service2 and service3, service4 can be received at the MBS BWP 1.

As can be seen, in this example, since the data amount of the incremental MBS service information available on the first MBS BWP is small, the signaling interaction data amount can be saved, and the interaction efficiency is improved.

In addition, the terminal may also receive first service information that may be provided by the initial BWP and second service information that may be provided on the first MBS BWP through the notification message, to obtain all MBS service information that may be provided on the first MBS BWP.

Wherein the second service information includes the first service information.

For example, the service list provided on the initial BWP is indicated in the notification message as follows: service1 and service2, and indicates that the list of services provided on the MBS BWP1 is: service1, service2, service3, service 4.

It can be seen that, in this embodiment, the terminal is capable of selecting the first BWP to receive the first MBS service of the local terminal, and the selected first BWP provides the MBS service that the terminal is interested in receiving or is ready to receive or is receiving, thereby avoiding the situation that the first MBS service cannot be correctly received without using an illegal BWP, improving the stability of MBS service transmission, and in addition, because the bandwidth of a single BWP is smaller, it is possible to avoid bandwidth waste and save power.

The embodiment of the application provides a transmission device of MBS service, which can be a terminal. Specifically, the MBS service transmission apparatus is configured to perform the steps performed by the terminal in the MBS service transmission method. The transmission apparatus for MBS service provided in the embodiment of the present application may include modules corresponding to the corresponding steps.

In the embodiment of the present application, the functional modules of the MBS service transmission device may be divided according to the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The division of the modules in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

Fig. 3 shows a possible structure diagram of the transmission apparatus 3 for MBS service in the above embodiment, in the case of dividing each functional module according to each function. As shown in fig. 3, the transmitting apparatus 3 of the MBS service includes a receiving unit 30,

the receiving unit 30 is configured to receive a first MBS service on a first bandwidth portion BWP, where the first BWP provides MBS services that the terminal is interested in receiving or preparing to receive or receiving.

In one possible example, the apparatus further comprises a switching unit 31, and the switching unit 31 is configured to perform BWP switching.

In one possible example, the trigger condition for BWP handover includes:

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, where the second BWP is different from the first BWP, and the BWPs included in the available BWP list provide MBS services that the terminal is interested in receiving or preparing to receive or receiving.

In one possible example, the trigger condition for BWP handover 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 partially the same as or completely different from the MBS service that the terminal is interested in receiving or is ready to receive or is receiving.

In one possible example, the trigger condition for BWP handover includes:

the MBS service that the terminal is interested in receiving or preparing to receive or is 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 or preparing to receive or is receiving.

In one possible example, the terminal is interested in receiving or ready to receive or changes the MBS service being received, which means that the terminal is no longer interested in receiving or not ready to receive or no longer receiving the first MBS service.

In one possible example, the state that the terminal is no longer interested in receiving or is not ready to receive or is no longer receiving for the first MBS service is determined by:

the terminal starts to receive or is not ready to receive the first MBS service any more, starts a switching timer, and determines the state that the terminal is not interested in or is not ready to receive the first MBS service any more after the switching timer is overtime if the terminal is still not interested in or is not ready to receive the first MBS service any more.

In one possible example, the MBS service that the terminal is interested in receiving or is ready to receive or is receiving changes means that the MBS service that the terminal is interested in receiving or is ready to receive or is receiving decreases to null;

the BWP switching means that the terminal switches the transmission resource of the local device receiving the service to the initial BWP.

In one possible example, the receiving unit 30 is further configured to: the notification message receives MBS service information available on each BWP, and the notification message includes a common message or a dedicated message.

In this possible example, in terms of the receiving, through the notification message, MBS service information available on each BWP, the receiving unit 30 is specifically configured to: receiving service information which can be provided by the initial BWP and incremental MBS service information which can be provided on the first MBS BWP through a notification message, and obtaining all MBS service information which can be provided on the first MBS BWP.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. Certainly, the transmission apparatus 3 of the MBS service provided in the embodiment of the present application includes, but is not limited to, the above modules, for example: the transmitting device 3 of the MBS service may further include a storage unit 32. The memory unit 32 may be used to store program codes and data of the transmission apparatus 3 of the MBS service.

Fig. 4 is a schematic structural diagram of a transmission apparatus 4 for MBS services provided in this embodiment, where an integrated unit is adopted. In fig. 4, the transmission apparatus 4 of the MBS service includes: a processing module 40 and a communication module 41. The processing module 40 is used for controlling and managing the actions of the transmitting device 4 of the MBS service, such as the steps performed by the receiving unit 30, the switching unit 31, and/or other processes for performing the techniques described herein. The communication module 41 is used for supporting interaction between the transmission apparatus 4 of the MBS service and other devices. As shown in fig. 4, the transmission apparatus 4 of the MBS service may further include a storage module 42, where the storage module 42 is used for storing program codes and data of the transmission apparatus 4 of the MBS service, for example, storing contents stored in the storage unit 32.

The Processing module 40 may be a Processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general-purpose 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. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication module 41 may be a transceiver, an RF circuit or a communication interface, etc. The storage module 42 may be a memory.

All relevant contents of each scene related to the method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. Both the transmission device 3 of the MBS service and the transmission device 4 of the MBS service can perform the steps performed by the terminal in the transmission method of the MBS service shown in fig. 2.

The embodiment of the application provides another transmission device of the MBS service, and the transmission device of the MBS service can be network equipment. Specifically, the MBS service transmission apparatus is configured to execute the steps executed by the network device in the MBS service transmission method. The transmission apparatus for MBS service provided in the embodiment of the present application may include modules corresponding to the corresponding steps.

Fig. 5 shows a possible structure diagram of the MBS service transmission apparatus in the above embodiment, where the functional modules are divided according to the respective functions. As shown in fig. 5, the transmission apparatus 5 for MBS service includes a transmission unit 50,

the sending unit 50 is configured to send a first MBS service to a terminal on a first BWP, where the first BWP provides the MBS service that the terminal is interested in receiving or preparing to receive or receiving.

In one possible example, the sending unit 50 is further configured to: MBS service information available on each BWP is transmitted through a notification message, which includes a common message or a dedicated message.

In this possible example, in terms of sending, through the notification message, MBS service information available on each BWP, the sending unit 50 is specifically configured to: and sending service information which can be provided by the initial BWP and incremental MBS service information which can be provided on the first MBS BWP through a notification message to obtain all MBS service information which can be provided on the first MBS BWP.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. Certainly, the transmission device 5 of the MBS service provided in the embodiment of the present application includes, but is not limited to, the above modules, for example: the transmitting device 5 of the MBS service may further include a storage unit 51. The storage unit 51 may be used to store program codes and data of the transmission apparatus of the MBS service.

Fig. 6 is a schematic structural diagram of a transmission apparatus for MBS service provided in an embodiment of the present application when an integrated unit is used. In fig. 6, the MBS service transmission apparatus 6 includes: a processing module 60 and a communication module 61. The processing module 60 is used for controlling and managing actions of the transmitting device 6 of the MBS service, such as steps performed by the sending unit 50, the switching unit 51, and/or other processes for performing the techniques described herein. The communication module 61 is used for supporting interaction between the transmission apparatus 6 of the MBS service and other devices. As shown in fig. 6, the transmission apparatus 6 of the MBS service may further include a storage module 62, where the storage module 62 is used to store program codes and data of the transmission apparatus 6 of the MBS service, for example, store the contents stored in the storage unit 51.

The Processing module 60 may be a Processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general-purpose 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. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication module 61 may be a transceiver, an RF circuit or a communication interface, etc. The storage module 62 may be a memory.

All relevant contents of each scene related to the method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again. Both the transmission device 5 of the MBS service and the transmission device 6 of the MBS service may perform the steps performed by the network device in the transmission method of the MBS service shown in fig. 2.

The embodiment of the present application further provides a chip, where the chip includes a processor, configured to call and run a computer program from a memory, so that a device in which the chip is installed performs some or all of the steps described in the terminal in the above method embodiment.

The embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform some or all of the steps described in the terminal in the above method embodiment.

The embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program causes a computer to perform some or all of the steps described in the above method embodiment for a network-side device.

The present application further provides a computer program product, where the computer program product includes a computer program operable to make a computer perform some or all of the steps described in the terminal in the above method embodiments. The computer program product may be a software installation package.

The steps of a method or algorithm described in the embodiments of the present application may be implemented in hardware, or may be implemented by a processor executing software instructions. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in an access network device, a target network device, or a core network device. Of course, the processor and the storage medium may reside as discrete components in an access network device, a target network device, or a core network device.

Those skilled in the art will appreciate that in one or more of the examples described above, the functionality described in the embodiments of the present application may be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, may 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 loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the embodiments of the present application in further detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present application, and are not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.

Claims

1. A transmission method of multicast/broadcast service MBS service is characterized by comprising the following steps:

2. The method of claim 1, wherein the first BWP is a BWP with a minimum bandwidth among BWPs configured for a current cell, and wherein the BWPs each provide MBS services that the terminal is interested in receiving or preparing to receive or receiving.

3. The method of claim 1, wherein the first BWP provides BWP of the first MBS service for only one of BWPs configured for a current cell.

4. The method of claim 1, further comprising:

the terminal performs BWP handover.

5. The method according to claim 4, wherein the trigger condition for BWP handover comprises:

6. The method according to claim 4, wherein the trigger condition for BWP handover comprises:

7. The method according to claim 4, wherein the trigger condition for BWP handover comprises:

8. The method of claim 7, wherein the MBS service change that the terminal is interested in receiving or ready to receive or is receiving refers to a state that the terminal is no longer interested in receiving or not ready to receive or no longer receiving the first MBS service.

9. The method of claim 8, wherein the state that the terminal is no longer interested in receiving or is not ready to receive or is no longer receiving for the first MBS service is determined by:

10. The method of claim 7, wherein the MBS service change that the terminal is interested in receiving or ready to receive or is receiving means that the MBS service that the terminal is interested in receiving or ready to receive or is receiving is reduced to null;

11. The method according to any one of claims 1-10, further comprising:

the terminal receives the available MBS service information on each BWP through a notification message, wherein the notification message comprises a public message or a special message.

12. The method of claim 11, wherein the terminal receives MBS service information available on each BWP through a notification message, comprising:

the terminal receives the service information provided by the initial BWP and the incremental MBS service information provided on the first MBS BWP through the notification message, so as to obtain all the MBS service information provided on the first MBS BWP.

13. A transmission method of MBS service is characterized by comprising the following steps:

14. The method of claim 13, wherein the first BWP is a BWP with a minimum bandwidth among BWPs configured for a current cell, and wherein the BWPs each provide MBS services that the terminal is interested in receiving or preparing to receive or receiving.

15. The method of claim 13, wherein the first BWP provides BWP of the first MBS service for only one of BWPs configured in a current cell.

16. The method of claim 13, further comprising:

the network device sends the BWP configuration update information to the terminal.

17. The method according to any one of claims 13-16, further comprising:

the network device transmits MBS service information available on each BWP through a notification message, which includes a common message or a dedicated message.

18. The method of claim 17, wherein the network device sends MBS service information available on each BWP via a notification message, comprising:

the network device sends service information that the initial BWP can provide and incremental MBS service information that can be provided on the first MBS BWP through a notification message, so as to obtain all MBS service information that can be provided on the first MBS BWP.

19. A device for transmitting MBS service, comprising:

20. A device for transmitting MBS service, comprising:

21. A terminal comprising a processor, memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-12.

22. A network device comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs including instructions for performing the steps in the method of any of claims 13-18.

23. A computer-readable storage medium, characterized in that it stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to any one of claims 1-12 or 13-18.