A communication method and apparatus

Abstract

The application discloses a communication method and device, so that the terminal device reports a first broadcast multicast service of which a transmission mode that the terminal device is interested in and / or is receiving data is a first transmission mode to an access network device, so that the terminal device can no longer report information for indicating whether the terminal device is interested in other broadcast multicast services and information for indicating whether the terminal device is receiving other broadcast multicast services, and uplink overhead can be reduced.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a communication method and apparatus. Background Technology

[0002] Broadcast multicast services are mainly applicable to services that target multiple terminal devices, such as live broadcasts and scheduled program playback, so as to enable broadcast multicast services to send to multiple terminal devices simultaneously through network equipment.

[0003] Broadcast multicast services can be sent to terminal devices via unicast from network devices or via multicast from dedicated bearers. To receive broadcast multicast services of interest, terminal devices need to indicate the broadcast multicast services they are interested in to the access network devices.

[0004] In summary, currently, terminal devices need to indicate all broadcast and multicast services that the terminal device is interested in to the access network device, which results in some unnecessary uplink overhead. Summary of the Invention

[0005] This application provides a communication method and apparatus for reducing signaling overhead in MBS service transmission-related processes.

[0006] In a first aspect, embodiments of this application provide a communication method that can be executed by an access network device or a component in the access network device, such as a processor, chip, or chip system.

[0007] According to this method, the access network device can determine that the transmission mode of the first broadcast multicast service is a first transmission mode, which is a transmission mode capable of receiving the broadcast multicast service in any of the connected, inactive, or idle states. The access network device can send first information to the terminal device, the first information being used to request broadcast multicast service interest indication information. The broadcast multicast service interest indication information is used to indicate whether the terminal device is interested in the first broadcast multicast service and / or whether the terminal device is currently receiving the first broadcast multicast service. The access network device can also receive the broadcast multicast service interest indication information.

[0008] Using the above method, the terminal device can report the broadcast multicast service interest indication information of the first broadcast multicast service to the access network device. The transmission mode of the first broadcast multicast service is the first transmission mode. Therefore, the terminal device no longer needs to report information indicating whether the terminal device is interested in other broadcast multicast services and information indicating whether the terminal device is receiving other broadcast multicast services, which can reduce uplink overhead.

[0009] In one possible design, the access network device can also receive second information and determine the transmission mode of the first broadcast multicast service as the first transmission mode based on the second information. With this design, the access network device can determine the transmission mode of the first broadcast multicast service as the first transmission mode based on the second information.

[0010] In one possible example, the second information may be determined by core network equipment and / or operation and maintenance management, enabling the core network and / or operators to determine, set, configure, or manage the transmission mode of broadcast and multicast services.

[0011] In one possible design, the access network device can determine whether a broadcast multicast service meets a first condition, and the broadcast multicast service that meets the first condition is the first broadcast multicast service. Using this design, the access network device can determine the transmission mode corresponding to the broadcast multicast service. The access network device can also receive third information from the core network device, which indicates the first condition. The first condition may be, for example, a QoS condition.

[0012] In one possible design, the access network device can send fourth information to the core network device, which indicates that the transmission mode of the first broadcast multicast service is the first transmission mode. With this design, when the access network device determines the transmission mode corresponding to the broadcast multicast service, it can indicate the corresponding transmission mode to the core network device.

[0013] In one possible design, the broadcast multicast service interest indication information includes at least one of the following: information indicating that the terminal device is interested in the first broadcast multicast service; information indicating that the terminal device is not interested in the first broadcast multicast service; information indicating that the terminal device is receiving the first broadcast multicast service; or information indicating that the terminal device is not receiving the first broadcast multicast service. This design allows for flexible indication of the broadcast multicast service interest indication information.

[0014] In one possible design, the second information may include at least one of the following: an identifier of the first broadcast multicast service; a temporary identifier of the wireless network belonging to the first broadcast multicast service for scheduling; a broadcast multicast service session identifier for transmitting the first broadcast multicast service; information for transmitting the first broadcast multicast service; or request information for requesting to obtain broadcast multicast service interest indication information of the terminal device for the first broadcast multicast service. Therefore, flexible requests can be implemented when the access network device requests to obtain the broadcast multicast service interest indication information of the terminal device.

[0015] Secondly, embodiments of this application provide a communication method that can be executed by a core network device or a component in the core network device, such as a processor, chip, or chip system.

[0016] According to this method, the core network device can determine that the transmission mode of the first broadcast multicast service is a first transmission mode, which is a transmission mode capable of receiving the broadcast multicast service in any of the connected, inactive, or idle states. The core network device can also send information indicating that the transmission mode of the first broadcast multicast service is the first transmission mode.

[0017] The information used to indicate that the transmission mode of the first broadcast multicast service is the first transmission mode may include second information sent to the access network device. Alternatively, the information used to indicate that the transmission mode of the first broadcast multicast service is the first transmission mode may include sixth information sent to the terminal device.

[0018] In one possible design, the core network equipment can determine whether a broadcast multicast service meets a first condition, and the broadcast multicast service that meets the first condition is the first broadcast multicast service.

[0019] In one possible design, the core network equipment may also receive fifth information and determine the transmission mode of the first broadcast multicast service as the first transmission mode based on the fifth information.

[0020] In one possible design, core network equipment can receive fifth information from operation and maintenance management.

[0021] In one possible design, the first broadcast multicast service is the service of interest indicated by the terminal device.

[0022] In one possible example, the core network device may send information to the terminal device or access network device indicating that the transmission mode of the first broadcast multicast service is the first transmission mode. Therefore, the access network device or terminal device can learn that the transmission mode of the first broadcast multicast service is the first transmission mode. If the terminal device learns that the transmission mode of the first broadcast multicast service is the first transmission mode, it may proactively send broadcast multicast service interest indication information to the access network device.

[0023] The access network equipment mentioned in the second aspect above can also be replaced by an OAM system, device, or equipment.

[0024] The beneficial effects described in the second aspect above can be found in the beneficial effects described in the first aspect above.

[0025] Thirdly, embodiments of this application provide a communication method that can be executed by a terminal device or a component in the terminal device, such as a processor, chip, or chip system.

[0026] The terminal device can receive first information from the access network device. This first information is used to request broadcast multicast service interest indication information for the first broadcast multicast service. The first transmission mode is a transmission mode capable of receiving the broadcast multicast service in any of the connected, inactive, or idle states. The terminal device can also send the broadcast multicast service interest indication information for the first broadcast multicast service to the access network device. This broadcast multicast service interest indication information is used to indicate whether the terminal device is interested in the first broadcast multicast service and / or whether the terminal device is currently receiving the first broadcast multicast service.

[0027] The beneficial effects described in the third aspect above can be found in the beneficial effects described in the first aspect above.

[0028] Fourthly, embodiments of this application provide a communication method that can be executed by a terminal device or a component in the terminal device, such as a processor, chip, or chip system.

[0029] According to this method, the terminal device can obtain sixth information, which indicates that the transmission mode of the first broadcast multicast service is a first transmission mode, which is a transmission mode capable of receiving the broadcast multicast service in any of the connected, inactive, or idle states. The terminal device can also send broadcast multicast service interest indication information to the access network device. The broadcast multicast service interest indication information is used to indicate whether the terminal device is interested in the first broadcast multicast service and / or whether the terminal device is currently receiving the first broadcast multicast service.

[0030] Using the above method, the terminal device can report the broadcast multicast service interest indication information of the first broadcast multicast service to the access network device. The transmission mode of the first broadcast multicast service is the first transmission mode. Therefore, the terminal device no longer needs to report information indicating whether the terminal device is interested in other broadcast multicast services and information indicating whether the terminal device is receiving other broadcast multicast services, which can reduce uplink overhead.

[0031] In one possible design, the terminal device can receive sixth information from core network equipment or a server.

[0032] In one possible design, if the sixth information originates from a core network device, the terminal device may send a seventh information to that core network device before obtaining the sixth information. This seventh information can be used to request registration with the core network. The seventh information may indicate at least one broadcast multicast service, including the first broadcast multicast service.

[0033] In one possible design, if the sixth information originates from the server, the terminal device may send a seventh information to the server before receiving the sixth information. This seventh information can be used to request registration with the server. The seventh information may indicate at least one broadcast multicast service, including the first broadcast multicast service.

[0034] In one possible design, if the sixth information originates from a server, the terminal device can send a seventh information to the core network device after receiving the sixth information. This seventh information can be used to request registration with the core network. The seventh information may indicate at least one broadcast multicast service, including the first broadcast multicast service.

[0035] In one possible design, the first broadcast multicast service is the broadcast multicast service of interest indicated by the terminal device.

[0036] Fifthly, embodiments of this application provide a communication method that can be executed by an access network device or a component in the access network device, such as a processor, chip, or chip system.

[0037] According to this method, the access network device can receive broadcast multicast service interest indication information from the terminal device. The broadcast multicast service interest indication information is used to indicate whether the terminal device is interested in the first broadcast multicast service and / or whether the terminal device is currently receiving the first broadcast multicast service. The transmission mode of the first broadcast multicast service is a first transmission mode, which is a transmission mode capable of receiving the broadcast multicast service in any of the connected, inactive, or idle states.

[0038] The beneficial effects described in the fifth aspect above can be found in the beneficial effects described in the fourth aspect above.

[0039] Sixthly, embodiments of this application provide a communication method that can be executed by an OAM (Operator, Operator, or Content Service Provider), or by a component of the OAM, Operator, or Content Service Provider, such as a processor, chip, or chip system.

[0040] Taking OAM as the executing entity as an example, according to this method, OAM can determine whether the transmission mode of the first broadcast multicast service is the first transmission mode or the second transmission mode. OAM can also send indication information about the transmission mode of the first broadcast multicast service. This indication information is used to indicate whether the transmission mode of the first broadcast multicast service is the first transmission mode or the second transmission mode.

[0041] Accordingly, the indication information can be received by the access network device and / or the core network device. If the core network device receives the indication information, it can also send the indication information indicating whether the transmission mode of the first broadcast multicast service is the first transmission mode or the second transmission mode to the access network device. If the access network device receives the indication information, it can also send the indication information indicating whether the transmission mode of the first broadcast multicast service is the first transmission mode or the second transmission mode to the core network device.

[0042] Using the above method, the OAM can determine and indicate the transmission mode of the first broadcast multicast service to the access network equipment and / or core network equipment.

[0043] In a seventh aspect, embodiments of this application provide a communication method that can be executed by an access network device or a component in the access network device, such as a processor, chip, or chip system.

[0044] Taking the access network device as the executing entity as an example, according to this method, the access network device can obtain a first condition and determine the transmission mode of the first broadcast multicast service as either a first transmission mode or a second transmission mode based on the first condition. The first condition may be, for example, a QoS condition, or an identifier of the broadcast multicast service in the first transmission mode and / or the second transmission mode.

[0045] Using the above method, the access network equipment can determine the indication information of the transmission mode of the first broadcast multicast service.

[0046] Eighthly, embodiments of this application provide a communication method that can be executed by a core network device or a component in the core network device, such as a processor, chip, or chip system.

[0047] Taking the core network device as the executing entity as an example, according to this method, the core network device determines the transmission mode of the first multicast / group service as either the first transmission mode or the second transmission mode. The core network device sends indication information of the transmission mode of the multicast / group service to the access network device.

[0048] Using the above method, the core network equipment can determine and indicate the transmission mode of the first broadcast multicast service to the access network equipment.

[0049] Ninthly, embodiments of this application provide a communication apparatus capable of implementing the method described in the first aspect or any possible design by an access network device. The apparatus includes corresponding modules, units, or components for performing the described method. The modules included in the apparatus can be implemented in software and / or hardware. The apparatus may, for example, be an access network device, or a component, baseband chip, chip system, or processor that supports the implementation of the described method within the access network device.

[0050] For example, the communication device may include a transceiver module or communication module, and modular components such as a processing module or processing unit, which can perform the corresponding functions of the access network device in the first aspect or any possible design described above. When the communication device is an access network device, the transceiver module may be a transmitter and a receiver, or a transceiver obtained by integrating a transmitter and a receiver. The transceiver module may include a communication interface, an antenna and / or radio frequency circuits, etc., and the processing module may be a processor, such as a baseband chip. When the communication device is a component with the functions of the access network device described above, the transceiver module may be a radio frequency module or a communication interface, and the processing module may be a processor. When the communication device is a chip system, the transceiver module may be the input / output interface of the chip system, and the processing module may be the processor of the chip system, such as a central processing unit (CPU).

[0051] Optionally, when the communication device is implemented through software modules, the communication device may include a transceiver module and / or a processing module. When the communication device is implemented through hardware components, the communication device may include a transceiver and / or a processor.

[0052] The transceiver module or transceiver can be used to perform the receiving and / or transmitting actions performed by the access network device in the first aspect or any possible design thereof. The processing module or processor can be used to perform actions other than receiving and transmitting performed by the access network device in the first aspect or any possible design thereof.

[0053] When executing the method shown in the first aspect, the processing module or processor may determine that the transmission mode of the first broadcast multicast service is a first transmission mode, which is a transmission mode capable of receiving the broadcast multicast service in any of the connected, inactive, or idle states. The transceiver module or transceiver may send first information to the terminal device, the first information being used to request broadcast multicast service interest indication information. The broadcast multicast service interest indication information is used to indicate whether the terminal device is interested in the first broadcast multicast service and / or whether the terminal device is currently receiving the first broadcast multicast service. The transceiver module or transceiver may also receive broadcast multicast service interest indication information.

[0054] In one possible design, the transceiver module or transceiver may also receive second information, and the processing module or processor may determine the transmission mode of the first broadcast multicast service as the first transmission mode based on the second information.

[0055] In one possible example, the transmission mode of the first broadcast multicast service is determined by the core network equipment and / or operation and maintenance management.

[0056] In one possible design, the processing module or processor can determine whether a broadcast multicast service meets a first condition, and the broadcast multicast service that meets the first condition is the first broadcast multicast service.

[0057] In one possible design, the transceiver module or transceiver may send a fourth message to the core network equipment, which indicates that the transmission mode of the first broadcast multicast service is the first transmission mode.

[0058] In one possible design, the broadcast multicast service interest indication information may include at least one of the following: information indicating that the terminal device is interested in the first broadcast multicast service; information indicating that the terminal device is not interested in the first broadcast multicast service; information indicating that the terminal device is receiving the first broadcast multicast service; or information indicating that the terminal device is not receiving the first broadcast multicast service.

[0059] In one possible design, the second information includes at least one of the following: an identifier of the first broadcast multicast service; a temporary identifier of a wireless network belonging to the first broadcast multicast service; a broadcast multicast session identifier for transmitting the first broadcast multicast service; a request for transmitting the first broadcast multicast service; or a request for obtaining broadcast multicast service interest indication information of the terminal device for the first broadcast multicast service.

[0060] The beneficial effects described in the ninth aspect above are similar to the beneficial effects described in the first aspect above.

[0061] In a tenth aspect, embodiments of this application provide a communication apparatus capable of implementing the method described in the second aspect above or any possible design by a core network device. The apparatus includes corresponding modules or components for performing the described method. The modules included in the apparatus can be implemented in software and / or hardware. The apparatus may, for example, be a core network device, or a component, baseband chip, chip system, or processor that supports the core network device in implementing the described method.

[0062] For example, the communication device may include modular components such as a transceiver module, or communication module, and a processing module, which can perform the corresponding functions of the core network equipment in the second aspect described above or any possible design thereof. When the communication device is a core network equipment, the transceiver module may be a transmitter and a receiver, or a transceiver obtained by integrating a transmitter and a receiver. The transceiver module may include a communication interface, an antenna, and / or radio frequency circuits, etc., and the processing module may be a processor, such as a baseband chip. When the communication device is a component with the functions of the aforementioned core network equipment, the transceiver module may be a radio frequency module or a communication interface, and the processing module may be a processor. When the communication device is a chip system, the transceiver module may be the input / output interface of the chip system, and the processing module may be the processor of the chip system, such as a CPU.

[0063] Optionally, when the communication device is implemented through software modules, the communication device may include a transceiver module and / or a processing module. When the communication device is implemented through hardware components, the communication device may include a transceiver and / or a processor.

[0064] The transceiver module or transceiver can be used to perform the receiving and / or transmitting actions performed by the core network equipment in the second aspect or any possible design thereof. The processing module or processor can be used to perform actions other than receiving and transmitting performed by the core network equipment in the second aspect or any possible design thereof.

[0065] When executing the method shown in the second aspect, the processing module or processor may determine that the transmission mode of the first broadcast multicast service is a first transmission mode, which is a transmission mode capable of receiving the broadcast multicast service in any of the connected, inactive, or idle states. The transceiver module or transceiver may send information indicating that the transmission mode of the first broadcast multicast service is the first transmission mode.

[0066] The information used to indicate that the transmission mode of the first broadcast multicast service is the first transmission mode may include second information sent to the access network device. The information used to indicate that the transmission mode of the first broadcast multicast service is the first transmission mode may include sixth information sent to the terminal device.

[0067] In one possible design, the processing module or processor can determine whether the broadcast multicast service meets the first condition.

[0068] In one possible design, the transceiver module or transceiver may also receive fifth information, and the processing module or processor may determine the transmission mode of the first broadcast multicast service as the first transmission mode based on the fifth information.

[0069] In one possible design, the transceiver module or transceiver may also receive the fifth information from operation and maintenance management.

[0070] In one possible design, the first broadcast multicast service is the service of interest indicated by the terminal device.

[0071] In one possible example, the transceiver module or transceiver may send information to the access network device or terminal device to indicate that the transmission mode of the first broadcast multicast service is the first transmission mode.

[0072] The beneficial effects described in the tenth aspect above are similar to the beneficial effects described in the first aspect above.

[0073] Eleventhly, embodiments of this application provide a communication device that can implement the method described in the third aspect above or any possible design by a terminal device. The device includes corresponding modules or components for performing the described method. The modules included in the device can be implemented in software and / or hardware. The device can be, for example, a terminal device, or a component, baseband chip, chip system, or processor that supports the implementation of the described method in the terminal device.

[0074] For example, the communication device may include modular components such as a transceiver module (or communication module) and a processing module, which can perform the corresponding functions of the terminal device in the third aspect above or any possible design thereof. When the communication device is a terminal device, the transceiver module may be a transmitter and / or a receiver, or a transceiver obtained by integrating a transmitter and a receiver. The transceiver module may include an antenna and radio frequency circuits, etc., and the processing module may be a processor, such as a baseband chip. When the communication device is a component with the functions of the aforementioned terminal device, the transceiver module may be a radio frequency module, and the processing module may be a processor. When the communication device is a chip system, the transceiver module may be the input / output interface of the chip system, and the processing module may be the processor of the chip system, such as a CPU.

[0075] Optionally, when the communication device is implemented through software modules, the communication device may include a transceiver module and / or a processing module. When the communication device is implemented through hardware components, the communication device may include a transceiver and / or a processor.

[0076] The transceiver module or transceiver can be used to perform the receiving and / or transmitting actions performed by the terminal device in the third aspect or any possible design thereof. The processing module or processor can be used to perform actions other than receiving and transmitting performed by the terminal device in the third aspect or any possible design thereof.

[0077] For example, the transceiver module or transceiver may receive first information from the access network device. This first information is used to request the terminal device to obtain broadcast multicast service interest indication information for the first broadcast multicast service. The first transmission mode is a transmission mode capable of receiving the broadcast multicast service in any of the connected, inactive, or idle states. The transceiver module or transceiver may also send the broadcast multicast service interest indication information of the terminal device for the first broadcast multicast service to the access network device. This broadcast multicast service interest indication information is used to indicate whether the terminal device is interested in the first broadcast multicast service and / or whether the terminal device is currently receiving the first broadcast multicast service.

[0078] The beneficial effects described in the eleventh aspect above are similar to the beneficial effects described in the first aspect above.

[0079] In a twelfth aspect, embodiments of this application provide a communication device capable of implementing the method described in the fourth aspect above or any possible design by a terminal device. The device includes corresponding modules, units, or components for performing the described method. The modules included in the device can be implemented in software and / or hardware. The device may, for example, be a terminal device, or a component, baseband chip, chip system, or processor that supports the implementation of the described method in the terminal device.

[0080] For example, the communication device may include modular components such as a transceiver module or communication unit, and a processing module or processing unit, which can perform the corresponding functions of the terminal device in the fourth aspect above or any possible design therein. When the communication device is a terminal device, the transceiver module may be a transmitter and / or a receiver, or a transceiver obtained by integrating a transmitter and a receiver. The transceiver module may include an antenna and radio frequency circuits, etc., and the processing module may be a processor, such as a baseband chip. When the communication device is a component with the functions of the terminal device described above, the transceiver module may be a radio frequency module, and the processing module may be a processor. When the communication device is a chip system, the transceiver module may be the input / output interface of the chip system, and the processing module may be the processor of the chip system, such as a CPU.

[0081] Optionally, when the communication device is implemented through software modules, the communication device may include a transceiver module and / or a processing module. When the communication device is implemented through hardware components, the communication device may include a transceiver and / or a processor.

[0082] The transceiver module or transceiver can be used to perform the receiving and / or transmitting actions performed by the terminal device in the fourth aspect or any possible design thereof. The processing module or processor can be used to perform actions other than receiving and transmitting performed by the terminal device in the fourth aspect or any possible design thereof.

[0083] For example, the processing module, processor, transceiver module, transceiver, or receiving module may acquire sixth information, which indicates that the transmission mode of the first broadcast multicast service is a first transmission mode, which is a transmission mode capable of receiving the broadcast multicast service in any of the connected, inactive, or idle states. The transceiver module, transceiver, or sending module may also send broadcast multicast service interest indication information of the terminal device for the first broadcast multicast service to the access network device. The broadcast multicast service interest indication information is used to indicate whether the terminal device is interested in the first broadcast multicast service and / or whether it is currently receiving the first broadcast multicast service.

[0084] In one possible design, the transceiver module or transceiver can receive sixth information from core network devices or servers.

[0085] In one possible design, if the sixth information comes from a core network device, the transceiver module or transceiver may send a seventh information to the core network device before obtaining the sixth information. The seventh information is used to indicate at least one broadcast multicast service, which includes the first broadcast multicast service.

[0086] In one possible design, if the sixth information originates from the server, the transceiver module or transceiver may send a seventh information to the server before receiving the sixth information. This seventh information can be used to request registration with the server. The seventh information may indicate at least one broadcast multicast service, including the first broadcast multicast service.

[0087] In one possible design, if the sixth information originates from a server, after obtaining the sixth information, the transceiver module or transceiver can send a seventh information to the core network device. This seventh information can be used to request registration with the core network. The seventh information may indicate at least one broadcast multicast service, including the first broadcast multicast service.

[0088] In one possible design, the first broadcast multicast service is the broadcast multicast service of interest indicated by the terminal device.

[0089] The beneficial effects described in the twelfth aspect above can be found in the beneficial effects described in the fourth aspect above.

[0090] In a thirteenth aspect, embodiments of this application provide a communication apparatus capable of implementing the method described in the fifth aspect above or any possible design by an access network device. The apparatus includes corresponding modules or components for performing the described method. The modules included in the apparatus can be implemented in software and / or hardware. The apparatus may, for example, be an access network device, or a component, baseband chip, chip system, or processor that supports the implementation of the described method within the access network device.

[0091] For example, the communication device may include modular components such as a transceiver module or communication unit, and a processing module or processing unit, which can perform the corresponding functions of the access network device in the fifth aspect above or any possible design therein. When the communication device is an access network device, the transceiver module may be a communication interface, a transmitter and / or a receiver, or a transceiver obtained by integrating a transmitter and a receiver. The transceiver module may include an antenna and radio frequency circuits, etc., and the processing module may be a processor, such as a baseband chip. When the communication device is a component with the above-described access network device functions, the transceiver module may be a radio frequency module or a communication interface, and the processing module may be a processor. When the communication device is a chip system, the transceiver module may be the input / output interface of the chip system, and the processing module may be the processor of the chip system, such as a CPU.

[0092] Optionally, when the communication device is implemented through software modules, the communication device may include a transceiver module and / or a processing module. When the communication device is implemented through hardware components, the communication device may include a transceiver and / or a processor.

[0093] The transceiver module or transceiver can be used to perform the receiving and / or transmitting actions performed by the access network equipment in the Fifth Aspect or any possible design thereof. The processing module or processor can be used to perform actions other than receiving and transmitting performed by the access network equipment in the Fifth Aspect or any possible design thereof.

[0094] According to this method, the transceiver module or transceiver can receive broadcast multicast service interest indication information from the terminal device for the first broadcast multicast service. The transmission mode of the first broadcast multicast service is a first transmission mode, which is a transmission mode capable of receiving the broadcast multicast service in any of the connected, inactive, or idle states. The broadcast multicast service interest indication information is used to indicate whether the device is interested in the first broadcast multicast service and / or whether it is currently receiving the first broadcast multicast service.

[0095] The beneficial effects described in aspect thirteen above can be found in the beneficial effects described in aspect four above.

[0096] In a fourteenth aspect, embodiments of this application provide a communication device capable of implementing the methods described in the sixth aspect above or any possible design by an OAM (Operational Information Center) operator or content service provider. The device includes corresponding modules or components for performing the described methods. The modules included in the device can be implemented in software and / or hardware. The device can, for example, be an OAM system or device, an operator system or device, a content service provider system or device, or a component, baseband chip, chip system, or processor that supports the implementation of the described methods by an OAM, operator, or content service provider.

[0097] For example, the communication device may include a transceiver module or communication unit, and modular components such as a processing module or processing unit, which can perform the corresponding functions of OAM, operator, or content service provider in the sixth aspect above or any possible design therein. When the communication device is an OAM system, operator system, or content service provider system, the transceiver module may be a communication interface, transmitter, and / or receiver, or a transceiver obtained by integrating a transmitter and receiver. The transceiver module may include an antenna and radio frequency circuits, etc., and the processing module may be a processor, such as a baseband chip. When the communication device is a component with the above-mentioned OAM, operator, or content service provider functions, the transceiver module may be a radio frequency module or communication interface, and the processing module may be a processor. When the communication device is a chip system, the transceiver module may be the input / output interface of the chip system, and the processing module may be the processor of the chip system, such as a CPU.

[0098] Optionally, when the communication device is implemented through software modules, the communication device may include a transceiver module and / or a processing module. When the communication device is implemented through hardware components, the communication device may include a transceiver and / or a processor.

[0099] When performing the method described in aspect six, the processing module or processor may determine whether the transmission mode of the first broadcast multicast service is a first transmission mode or a second transmission mode. The transceiver module or transceiver may send indication information regarding the transmission mode of the first broadcast multicast service. This indication information is used to indicate whether the transmission mode of the first broadcast multicast service is the first transmission mode or the second transmission mode.

[0100] The beneficial effects described in aspect fourteen above can be found in the beneficial effects described in aspect six above.

[0101] In a fifteenth aspect, embodiments of this application provide a communication apparatus capable of implementing the method described in the seventh aspect above or any possible design by an access network device. The apparatus includes corresponding modules or components for performing the described method. The modules included in the apparatus can be implemented in software and / or hardware. The apparatus may, for example, be an access network device, or a component, baseband chip, chip system, or processor that supports the implementation of the described method within the access network device.

[0102] For example, the communication device may include modular components such as a transceiver module or communication unit, and a processing module or processing unit, which can perform the corresponding functions of the access network device in the seventh aspect above or any possible design therein. When the communication device is an access network device, the transceiver module may be a communication interface, a transmitter and / or a receiver, or a transceiver obtained by integrating a transmitter and a receiver. The transceiver module may include an antenna and radio frequency circuits, etc., and the processing module may be a processor, such as a baseband chip. When the communication device is a component with the above-described access network device functions, the transceiver module may be a radio frequency module or a communication interface, and the processing module may be a processor. When the communication device is a chip system, the transceiver module may be the input / output interface of the chip system, and the processing module may be the processor of the chip system, such as a CPU.

[0103] Optionally, when the communication device is implemented through software modules, the communication device may include a transceiver module and / or a processing module. When the communication device is implemented through hardware components, the communication device may include a transceiver and / or a processor.

[0104] When executing the method shown in the seventh aspect, the processing module or processor may acquire a first condition and determine, based on the first condition, whether the transmission mode of the first broadcast multicast service is a first transmission mode or a second transmission mode. The first condition may be, for example, a QoS condition, or an identifier of the broadcast multicast service in the first transmission mode and / or the second transmission mode.

[0105] The beneficial effects described in aspect 15 above can be found in the beneficial effects described in aspect 7 above.

[0106] In a sixteenth aspect, embodiments of this application provide a communication apparatus capable of implementing the method described in the eighth aspect above or any possible design by a core network device. The apparatus includes corresponding modules or components for performing the described method. The modules included in the apparatus can be implemented in software and / or hardware. The apparatus may, for example, be a core network device, or a component, baseband chip, chip system, or processor that supports the core network device in implementing the described method.

[0107] For example, the communication device may include a transceiver module or communication module, and modular components such as a processing module or processing unit, which can perform the corresponding functions of the core network equipment in the eighth aspect above or any possible design therein. When the communication device is a core network equipment, the transceiver module may be a transmitter and a receiver, or a transceiver obtained by integrating a transmitter and a receiver. The transceiver module may include a communication interface, an antenna, and / or radio frequency circuits, etc., and the processing module may be a processor, such as a baseband chip. When the communication device is a component with the functions of the core network equipment described above, the transceiver module may be a radio frequency module or a communication interface, and the processing module may be a processor. When the communication device is a chip system, the transceiver module may be the input / output interface of the chip system, and the processing module may be the processor of the chip system, such as a CPU.

[0108] Optionally, when the communication device is implemented through software modules, the communication device may include a transceiver module and / or a processing module. When the communication device is implemented through hardware components, the communication device may include a transceiver and / or a processor.

[0109] The transceiver module or transceiver can be used to perform the receiving and / or transmitting actions performed by the core network equipment in the Eighth Aspect or any possible design thereof. The processing module or processor can be used to perform actions other than receiving and transmitting performed by the core network equipment in the Eighth Aspect or any possible design thereof.

[0110] When performing the method shown in aspect eight, the processing module or processor may determine whether the transmission mode of the first broadcast multicast service is a first transmission mode or a second transmission mode. The transceiver module or transceiver may send indication information regarding the transmission mode of the first broadcast multicast service. This indication information is used to indicate whether the transmission mode of the first broadcast multicast service is the first transmission mode or the second transmission mode.

[0111] The beneficial effects described in the sixteenth aspect above can be found in the beneficial effects described in the eighth aspect above.

[0112] In a seventeenth aspect, a communication system is provided, comprising communication devices as shown in any two or more of aspects nine to eleven. Alternatively, the communication system comprises communication devices as shown in any two or more of aspects ten, twelfth, and thirteenth. Alternatively, the communication system comprises the communication device shown in aspect fifteen, and core network equipment and / or access network equipment. Alternatively, the communication system comprises the communication device shown in aspect sixteen and access network equipment. Alternatively, the communication system comprises the communication device shown in aspect seventeen.

[0113] Eighteenth aspect: A computer-readable storage medium is provided for storing computer instructions that, when executed on a computer, cause the computer to perform the methods shown in the first to eighth aspects or any possible embodiments thereof.

[0114] In a nineteenth aspect, a computer program product comprising instructions is provided for storing computer instructions that, when executed on a computer, cause the computer to perform the methods described in the first to eighth aspects or any possible implementation thereof.

[0115] In a twentieth aspect, a circuit coupled to a memory is provided, the circuit being used to perform the methods shown in the first to eighth aspects or any possible embodiments thereof. The circuit may include a chip and / or chip circuitry. Attached Figure Description

[0116] Figure 1 This application provides a schematic diagram of the architecture of a communication system.

[0117] Figure 2 This is a schematic diagram of the architecture of another communication system provided in an embodiment of this application;

[0118] Figure 3 A schematic diagram of an MCCH channel provided in an embodiment of this application;

[0119] Figure 4 A schematic diagram of the MBS service registration process provided in this application embodiment;

[0120] Figure 5 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0121] Figure 6 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0122] Figure 7 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0123] Figure 8 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0124] Figure 9 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0125] Figure 10 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0126] Figure 11 A flowchart illustrating a communication method provided in an embodiment of this application;

[0127] Figure 12 A flowchart illustrating another communication method provided in an embodiment of this application;

[0128] Figure 13 A flowchart illustrating another communication method provided in an embodiment of this application;

[0129] Figure 14 A flowchart illustrating another communication method provided in an embodiment of this application;

[0130] Figure 15 A flowchart illustrating another communication method provided in an embodiment of this application;

[0131] Figure 16 A flowchart illustrating another communication method provided in an embodiment of this application;

[0132] Figure 17 This is a flowchart illustrating another communication method provided in an embodiment of this application. Detailed Implementation

[0133] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The specific operating methods in the method embodiments can also be applied to the device embodiments or system embodiments.

[0134] like Figure 1 As shown, the communication method provided in this application embodiment can be applied to a wireless communication system, which may include a terminal device 101, an access network device 102, and a core network device.

[0135] It should be understood that the above wireless communication systems are applicable to both low-frequency (sub-6G) and high-frequency (above-6G) scenarios. Application scenarios for these wireless communication systems include, but are not limited to, fifth-generation systems, new radio (NR) communication systems, or future evolved public land mobile network (PLMN) systems, and non-land mobile networks.

[0136] The terminal device 101 shown above can be user equipment (UE), terminal, access terminal, terminal unit, terminal station, mobile station (MS), remote station, remote terminal, mobile terminal, wireless communication equipment, terminal agent, or other terminal equipment. This terminal device 101 may have wireless transceiver capabilities, enabling it to communicate (e.g., wirelessly) with one or more network devices in one or more communication systems and receive network services provided by these network devices. These network devices include, but are not limited to, the access network device 102 shown in the figure.

[0137] Among them, terminal device 101 may be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA) device, handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle device, wearable device, terminal device in future 5G network or terminal device in future evolved PLMN network, etc.

[0138] Furthermore, terminal device 101 can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; terminal device 101 can also be deployed on water, such as on ships; terminal device 101 can also be deployed in the air, such as on airplanes, balloons, and satellites. Specifically, terminal device 101 can be a mobile phone, tablet, computer with wireless transceiver capabilities, virtual reality (VR) terminal, augmented reality (AR) terminal, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical care, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. Terminal device 101 can also be a communication chip with a communication module, a vehicle with communication capabilities, or vehicle-mounted equipment such as vehicle-mounted communication devices and vehicle-mounted communication chips.

[0139] Access network device 102 can be a device for providing network access functions, such as a radio access network (RAN) base station, etc. Specifically, access network device 102 may include a base station (BS), such as a RAN base station, or include a base station and radio resource management equipment for controlling the base station. Access network device 102 may also include relay stations or relay equipment, access points, and base stations in future 5G networks, base stations in future evolved PLMN networks, or NR base stations, etc. Access network device 102 can be a wearable device or an in-vehicle device. Access network device 102 can also be a communication chip with a communication module.

[0140] For example, access network equipment 102 includes, but is not limited to: next-generation base stations (g nodeB, gNB) in 5G, evolved node B (eNB) in long term evolution (LTE) systems, radio network controllers (RNCs), radio controllers (RNCs) in cloud radio access networks (CRAN) systems, base station controllers (BSCs), home-evolved node Bs (or home node Bs, HNBs), baseband units (BBUs), transmitting and receiving points (TRPs), transmitting points (TPs), mobile switching centers, base transceiver stations (BTSs) in global system for mobile communication (GSM) or code division multiple access (CDMA) networks, and may also be node base stations in wideband code division multiple access (WCDMA) networks. It can be a station (NB), an evolved NB (eNB or eNodeB) in LTE, a base station in a future 5G network, an access network in a future evolved PLMN network, or a wearable device or vehicle-mounted device.

[0141] In addition, such as Figure 1As shown, access network device 102 can connect to core network (CN) equipment. Core network equipment can provide core network services to terminal device 101 connected to access network device 102. Core network equipment can correspond to different devices in different systems. For example, in 4G, core network equipment can correspond to a mobility management entity (MME) and / or a serving gateway (S-GW). In 5G, core network equipment can correspond to access and mobility management function (AMF), session management function (SMF), or user plane function (UPF), etc.

[0142] like Figure 2 As shown in the embodiments of this application, the network device can also transmit data or control signaling to multiple terminal devices to realize the transmission of broadcast multicast services. The network device here can be... Figure 1 The access network device 102 shown is an example. Broadcast multicast services may include one or more of multicast, multicast, or broadcast services; broadcast multicast services may also be referred to as multicast / multicast services. It should be understood that broadcast multicast in this application includes, but is not limited to, multicast broadcast service (MBS) under the NR system and multimedia broadcast multicast service (MBMS) under the LTE system. In the following application, broadcast multicast services may be referred to as MBS services or MBMS services.

[0143] For example, when providing MBS services, MBS data can be sent from the network device to the terminal device via unicast (or point-to-point, PTP) through a dedicated bearer established by the network device, or via multicast (or point-to-multipoint, PTM) through a dedicated bearer for MBS services, or simultaneously via both PTP and PTM. When a large number of terminal devices need to receive a particular MBS service, sending the service via unicast PTP requires establishing dedicated bearers for a large number of terminal devices, consuming significant resources. However, if the service is sent via multicast PTM, only a bearer for MBS transmission in PTM mode needs to be established, such as a multicast / multicast bearer or an MBS bearer. All terminal devices interested in the service can then receive the MBS service through this bearer, saving air interface resources, improving spectrum utilization, and increasing transmission efficiency.

[0144] Currently, during MBS service transmission, MBS service configuration information and / or control messages are transmitted via the (single cell) multicast control channel ((SC-)MCCH). MBS service configuration information and / or control messages can also be replaced by MCCH messages. The SC-MCCH message represents cell-level configuration, meaning each cell is configured via the SC-MCCH. This message can indicate ongoing MBS sessions and information about when each session can be scheduled, such as the scheduling period, scheduling window, and start offset. Configuration / control messages also provide information on whether neighboring cells are sending MBS sessions. The (SC-)MCCH message is sent periodically using a configurable repetition period, such as... Figure 3 As shown, the black rectangles represent the time-domain location of the periodically transmitted (SC-)MCCH. In other words, the (SC-)MCCH is broadcast repeatedly in cells providing MBS services at a certain period. A portion of the control information used to acquire the (SC-)MCCH messages can be transmitted through the broadcast control channel (BCCH).

[0145] For example, configuration / control messages may include one or more of the following configuration information: the MCCH period (sc-mcch-RepetitionPeriod) and offset (sc-mcch-Offset), the boundary of the MCCH periodic occurrence (sc-mcch-ModificationPeriod), the first subframe of MCCH scheduling (sc-mcch-FirstSubframe), or the duration of scheduled MCCHs that have started from the first subframe (sc-mcch-duration), etc.

[0146] User data for MBS services can be transmitted via the (SC-)multicast traffic channel ((SC-)MTCH). The (SC-)MTCH can be scheduled via (SC-)MCCH messages; that is, the configuration of the (SC-)MTCH is carried within the (SC-)MCCH messages. The configuration of the (SC-)MTCH is at the level of each group radio network temporary identifier (G-RNTI), which can also be said to be specific to each MBS service. A cell can simultaneously schedule user data to multiple terminal devices via the G-RNTI, and the terminal devices receive user data transmitted via (SC-)MTCH according to the G-RNTI. It should be understood that one G-RNTI can be for one or more MBS services. Additionally, the G-RNTI can also be used to schedule user data for MBS services carried on other logical channels.

[0147] Currently, for some MBS services, terminal devices need to enter RRC connected state to receive corresponding MBS service data. For example, the terminal device enters the connected state by receiving and responding to information from the core network indicating that the MBS service is about to be transmitted, and receives the configuration information of the MBS service through dedicated RRC (RRC) signaling and / or system messages. In this application, "information indicating that the MBS service is about to be transmitted" may include "information indicating the start of the MBS service," or "information indicating the arrival of the MBS service," or "information indicating that there is data for the MBS service to be sent on the network side," or "information indicating that the MBS service configuration is updated," etc.

[0148] To ensure the quality of service / requirements of MBS services, network devices can configure corresponding resources for terminal devices receiving these MBS services. These resources include, for example, resources for Hybrid Automatic Repeat Request (HARQ), resources for Random Access (RA), and / or physical resources that guarantee transmission rates. In this application, MBS services that require terminal devices to enter RRC connected state for reception can be referred to as enhanced mode MBS services. Correspondingly, MBS services that do not require entering RRC connected state for reception can be referred to as normal mode MBS services. For ease of explanation, normal mode MBS services can be referred to as MBS services in the first transmission mode; in other words, the first transmission mode is a transmission mode capable of receiving MBS services in any of the following states: RRC connected state, RRC inactive state, or RRC idle state. In other words, the first transmission mode does not require the terminal device to enter and / or remain in the RRC connected state for receiving the configuration and / or data of the MBS service. Furthermore, enhanced mode MBS services can be referred to as MBS services in the second transmission mode. The second transmission mode is a transmission mode that can only receive MBS services in RRC connected state. In other words, MBS services in the second transmission mode require the terminal device to enter and / or remain in RRC connected state in order to receive the configuration and / or data of the MBS service. It should be understood that the second transmission mode can also be referred to as the transmission mode of MBS services that are available in connected state.

[0149] In addition, for some MBS services, terminal devices can receive the corresponding data of MBS services in the RRC inactive state or the RRC idle state, without requiring the terminal device to enter and / or maintain the RRC connected state to receive the MBS service.

[0150] In addition, such as Figure 4As shown, for some MBS services, terminal devices may need to register with the core network, report information about MBS services of interest to the core network, and join multicast groups to receive MBS service configuration and data. Specifically, for MBS services received or transmitted in a second transmission mode, the core network may also inform the access network device of the MBS services of interest in the second transmission mode and / or the identifiers of the corresponding terminal devices interested in the MBS services, so that the access network device can send data of the MBS services of interest in the second transmission mode to the terminal device based on the identifiers. The identifiers of the corresponding terminal devices can indicate the terminal devices interested in a particular MBS service in a second transmission mode. Since the access network device can learn about the MBS services of interest in the second transmission mode from the core network, it is unnecessary for the terminal device to indicate the MBS services of interest in the second transmission mode to the access network device, increasing uplink overhead. One way the terminal device can indicate the MBS services of interest to the access network device is, for example, by sending information to the access network device indicating whether the terminal device is interested in the MBS service and / or is currently receiving the MBS service.

[0151] However, terminal devices interested in MBS services using the first transmission mode and / or those currently receiving MBS services using the first transmission mode may not need to register with the core network. In other words, these terminal devices do not report information about the MBS services they are interested in to the core network or join the multicast group. The core network does not notify the access network devices of the information about terminal devices using MBS services using the first transmission mode. These terminal devices include those interested in and / or currently receiving MBS services using the first transmission mode. In other words, the access network devices do not possess information about terminal devices interested in MBS services using the first transmission mode, including information about the MBS services the terminal devices are interested in and the MBS services the terminal devices are currently receiving.

[0152] To reduce the uplink overhead of MBS service transmission-related processes, this application provides a communication method. This communication method can be applied to... Figure 1 or Figure 2 The scenario is illustrated. This communication method can be implemented by at least one of a terminal device, an access network device, or a core network device. The access network device includes... Figure 1 The access network device 102 shown is or Figure 2 The network device shown may include terminal devices. Figure 1 The terminal device 101 shown or Figure 2 The terminal equipment shown may include core network equipment. Figure 1 The core network equipment shown.

[0153] The following section, with reference to the accompanying drawings, describes the possible structures of terminal equipment, access network equipment, and core network equipment.

[0154] For example, Figure 5 A schematic diagram of a possible communication device structure is shown, which may include a processing module 510 and a transceiver module 520. Exemplarily, Figure 5 The structure shown can be a terminal device, or a chip or other combined device, component, or assembly with the functions of the terminal device shown in this application, applied within the terminal device. When the structure is a terminal device, the transceiver module 520 may include a transceiver, which may include an antenna and radio frequency circuitry, etc.

[0155] Processing module 510 can be a processor, such as a baseband processor, which may include one or more central processing units (CPUs). When the structure is a component having the functions of the terminal device shown in this application, transceiver module 520 can be a radio frequency unit, and processing module 510 can be a processor, such as a baseband processor. When the structure is a chip system, transceiver module 520 can be the input / output interface of the chip, and processing module 510 can be the processor of the chip system, which may include one or more CPUs. Here, the chip is, for example, a baseband chip. It should be understood that processing module 510 in the embodiments of this application can be implemented by a processor or processor-related circuit components, and transceiver module 520 can be implemented by a transceiver or transceiver-related circuit components.

[0156] For example, the processing module 510 can be used to perform all operations performed by the terminal device in any embodiment of this application, except for the sending and receiving operations, such as processing operations, and / or other processes to support the technology described herein, such as generating messages, information, and / or signaling sent by the transceiver module 520, and processing messages, information, and / or signaling received by the transceiver module 520. The transceiver module 520 can be used to perform all receiving and sending operations performed by the terminal device in any embodiment of this application, and / or other processes to support the technology described herein.

[0157] Alternatively, the transceiver module 520 can be a single functional module capable of performing both sending and receiving operations. For instance, the transceiver module 520 can execute all sending and receiving operations performed by the terminal device. For example, when performing a sending operation, the transceiver module 520 can be considered the sending module, and when performing a receiving operation, it can be considered the receiving module. Alternatively, the transceiver module 520 can also be two functional modules, collectively referred to as the sending module and the receiving module. The sending module performs the sending operation; for example, it can execute all sending operations performed by the terminal device, and the receiving module performs all receiving operations performed by the terminal device.

[0158] Figure 6 A schematic diagram of another communication device is shown. The terminal device provided in the embodiments of this application may include... Figure 6 The structure shown, or the components in the terminal device provided in the embodiments of this application, may include... Figure 6 The structure shown. (As illustrated) Figure 6 As shown, the communication device includes a processor, memory, radio frequency (RF) unit or RF circuit, or antenna, etc. The processor is mainly used to process communication protocols and data, control the communication device, execute software programs, and process software program data. The memory is mainly used to store software programs and data. The RF unit is mainly used for converting baseband signals to RF signals and processing RF signals.

[0159] like Figure 6 As shown, the communication device may include a transceiver module 610 and a processing module 620. The transceiver module may include a sending module and a receiving module; alternatively, the transceiver module 610 may be a single module capable of both sending and receiving functions. The transceiver module 610 can be used with… Figure 5 The transceiver module 520 corresponds to the transceiver module 610, which can be used to implement the transceiver module 520; this processing module 620 can be connected with... Figure 5 Corresponding to the processing module 510, the actions performed by the processing module 620 can be executed by the processing module 510. It should be understood that, as needed, the communication device may also include a communication interface for wired communication.

[0160] Optionally, the transceiver module 610 can also be referred to as a transceiver, transceiver circuit, or transceiver unit, etc., and may include at least one antenna and a radio frequency (RF) unit. The transceiver module 610 is mainly used for transmitting and receiving RF signals and converting RF signals to baseband signals. The processing module 610 is mainly used for baseband processing and controlling terminal equipment, etc. The transceiver module 610 and the processing module 620 can be physically installed together or physically separated, i.e., in a distributed base station configuration.

[0161] Figure 7 This is a schematic diagram of a communication device provided in an embodiment of this application. The structure may include a processing module 710 and a transceiver module 720. Exemplarily, this structure may be the core network device shown, or a chip or other combined device or component having the functions of the core network device shown in this application. When the structure is a core network device, the transceiver module 720 may be a communication interface, and the processing module 710 may be a processor, which may include one or more CPUs. When the structure is a component having the functions of the core network device shown in this application, the transceiver module 720 may be a communication interface, and the processing module 710 may be a CPU. When the structure is a chip system, the transceiver module 720 may be the input / output interface of the chip, and the processing module 710 may be the processor of the chip system, which may include one or more central processing units. It should be understood that the processing module 710 in the embodiments of this application may be implemented by a processor or processor-related circuit components, and the transceiver module 720 may be implemented by a transceiver or transceiver-related circuit components.

[0162] For example, processing module 710 can be used to perform all operations performed by the core network device in the embodiments of this application, except for the transmit and receive operations, such as generating messages, information and / or signaling sent by transceiver module 720, and / or processing messages, information and / or signaling received by transceiver module 720, and / or other processes used to support the technology described herein. Transceiver module 720 can be used to perform all transmit and / or receive operations performed by the core network device in the embodiments of this application, and / or other processes used to support the technology described herein.

[0163] Figure 8 A schematic diagram of another communication device provided in an embodiment of this application is given, which can be implemented by hardware components. Figure 8The device 800 shown may be a core network device, or a chip, chip system, or processor that supports the core network device in implementing the above methods. The device 800 may include modules, units, or means corresponding to the steps described in the embodiments of this application performed by the core network device. These functions, units, or means may be implemented in software, hardware, or by hardware executing corresponding software, or a combination of software and hardware. Further details can be found in the corresponding descriptions in the following embodiments.

[0164] Taking a hardware implementation as an example, the device 800 may include one or more processors 801, which can also be called processing units, and can implement certain control functions. The processor 801 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, while the central processing unit can be used to execute software programs on the communication device and process the data of the software programs. Communication devices include, for example, base stations, baseband chips, terminals, terminal chips, distribution units, or centralized units for control.

[0165] In an alternative design, processor 801 may store instructions 803 and / or data that can be executed by the processor to cause device 800 to perform the methods described in the embodiments of this application.

[0166] In another alternative design, the processor 801 may include a transceiver unit for implementing receive and transmit functions. For example, this transceiver unit may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receive and transmit functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0167] In another possible design, device 800 may include circuitry that performs the functions of sending, receiving, or communicating as described in the embodiments of this application.

[0168] Optionally, the device 800 may include one or more memories 802, which may store instructions 804 that can be executed on the processor, causing the device 800 to perform the methods described in the embodiments of this application. Optionally, the memory may also store data. Optionally, the processor may also store instructions and / or data. The processor and memory may be configured separately or integrated together. For example, the correspondence described in the embodiments of this application may be stored in memory or in the processor.

[0169] Optionally, the device 800 may further include a transceiver 805 and / or a communication interface 806. The processor 801, which may be referred to as a processing unit, controls the device 800. The transceiver 805, which may be referred to as a transceiver unit, transceiver, transceiver circuit, transceiver device, or transceiver module, is used to implement transceiver functions. The communication interface 806 may be a wireless transceiver, transceiver circuit, interface, or interface circuit.

[0170] The 801 processor can be used with Figure 7 The processing module 710 corresponds to the processor 801, which can be implemented by the processor 801; the transceiver 805 and / or the communication interface 806 can be connected to... Figure 7 The transceiver module 720 in the above can be implemented by transceiver 805 and / or communication interface 806.

[0171] For example, Figure 9 This illustration shows another possible structural diagram of the communication device provided in an embodiment of this application, which may include a processing module 910 and a transceiver module 920. Exemplarily, Figure 9 The structure shown can be an access network device, or a chip or other combination of devices, components, or assemblies with the functions of the access network device shown in this application. When the structure is an access network device, the transceiver module 920 may include a transceiver and / or an interface. The transceiver may include an antenna and radio frequency circuits, etc. The communication interface is, for example, an optical fiber interface, which can support wired communication between the access network device and core network devices or other network nodes or devices. The processing module 910 may be a processor, such as a baseband processor, which may include one or more CPUs. When the structure is a component with the functions of the access network device shown in this application, the transceiver module 920 may be a radio frequency unit or an interface, and the processing module 910 may be a processor, such as a baseband processor. When the structure is a chip system, the transceiver module 920 may be the chip's input / output interface, and the processing module 910 may be the chip system's processor, which may include one or more central processing units. It should be understood that the processing module 910 in the embodiments of this application may be implemented by a processor or processor-related circuit components, and the transceiver module 920 may be implemented by a transceiver or transceiver-related circuit components.

[0172] For example, processing module 910 can be used to perform all operations performed by the access network device in any embodiment of this application, except for transmit / receive operations, such as processing operations, and / or other processes to support the technology described herein, such as generating messages, information, and / or signaling sent by transceiver module 920, and processing messages, information, and / or signaling received by transceiver module 920. Transceiver module 920 can be used to perform all receive and transmit operations performed by the access network device in any embodiment of this application, and / or other processes to support the technology described herein.

[0173] Alternatively, the transceiver module 920 can be a single functional module capable of both transmitting and receiving operations. For instance, the transceiver module 920 can execute all transmitting and receiving operations performed by the access network device. For example, when performing a transmitting operation, the transceiver module 920 can be considered a transmitting module, and when performing a receiving operation, it can be considered a receiving module. Alternatively, the transceiver module 920 can also be two functional modules, collectively referred to as the transmitting module and the receiving module. The transmitting module performs the transmitting operation; for example, it can execute all transmitting operations performed by the access network device, and the receiving module performs all receiving operations performed by the access network device.

[0174] It should be understood that the above Figure 9 The communication device shown can also be used to implement OAM systems or devices or equipment, operator systems or devices or equipment, or content service provider systems or devices or equipment.

[0175] Figure 10 A schematic diagram of another communication device is shown. This communication device can be used to implement access network equipment or components within access network equipment. Figure 10 As shown, the communication device includes a processor, memory, radio frequency (RF) unit or RF circuit, or antenna, etc. The processor is mainly used to process communication protocols and data, control the communication device, execute software programs, and process software program data. The memory is mainly used to store software programs and data. The RF unit is mainly used for converting baseband signals to RF signals and processing RF signals.

[0176] like Figure 10As shown, the communication device may include a transceiver unit 1010 and a processing unit 1020. The transceiver module may include a transmitting module and a receiving module, or the processing unit 1010 may be a module capable of both transmitting and receiving functions. For example, the transceiver unit 1010 may include an antenna and / or radio frequency circuitry, and the processing unit 1020 may include a processor and / or memory. The transceiver unit 1010 can be connected to... Figure 9 The transceiver module 920 in the above corresponds to the transceiver unit 1010, which can be used to implement the transceiver module 920; this processing unit 1020 can be connected with... Figure 9 Corresponding to the processing module 910, the actions performed by the processing module 910 can be executed by the processing unit 1020. It should be understood that, as needed, the access network device may also include a communication interface for communicating with core network equipment.

[0177] Optionally, the transceiver unit 1010 may also be referred to as a transceiver, transceiver circuit, or transceiver, etc., and may include at least one antenna and a radio frequency (RF) unit. The transceiver unit 1010 is primarily used for transmitting and receiving RF signals and converting RF signals to baseband signals. The processing unit 1010 is primarily used for baseband processing and controlling access network equipment, etc. The transceiver unit 1010 and the processing unit 1020 may be physically arranged together or physically separated, i.e., a distributed base station.

[0178] For example, the transceiver unit 1010 may include one or more radio frequency units, such as a remote radio unit (RRU), and the processing unit 1020 may include one or more baseband units (BBU), which may also be referred to as digital units (DU).

[0179] In one example, the processing unit 1020 may consist of one or more single boards. Multiple single boards can collectively support a single access standard wireless access network, such as an LTE network, or they can each support different access standards wireless access networks, such as LTE, 5G, or other networks. The processing unit 1020 also includes a memory and a processor. The memory stores necessary instructions and data. The processor controls the access network device to perform necessary actions, such as controlling the access network device to execute the operation flow of the access network device in the embodiments shown in this application. The memory and processor can serve one or more single boards. That is, each single board can have its own memory and processor, or multiple single boards can share the same memory and processor. Furthermore, each single board can also have necessary circuitry.

[0180] also, Figure 10The illustrated structure can also be used to implement a terminal device or a component within a terminal device. For example, the processing unit 1020 can be used to perform all operations performed by the terminal device in any embodiment of this application, except for the transmit / receive operations, such as processing operations, and / or other processes to support the technology described herein, such as generating messages, information, and / or signaling sent by the transceiver unit 1010, and processing messages, information, and / or signaling received by the transceiver unit 1010. The transceiver unit 1010 can be used to perform all receive and transmit operations performed by the terminal device in any embodiment of this application, and / or other processes to support the technology described herein.

[0181] It should be understood that it can be made by Figure 5 The transceiver module 520 shown is or Figure 6 The transceiver unit 610 shown performs the receiving and / or sending actions performed by the terminal device in this embodiment of the application, which can be performed by... Figure 5 The processing module 510 shown or Figure 6 The processing unit 620 shown performs actions other than receiving and / or sending performed by the terminal device in this embodiment of the application. Furthermore, it can be performed by... Figure 7 The transceiver module 720 shown is or Figure 8 The transceiver 805 and / or communication interface 806 shown perform the receiving and / or transmitting actions performed by the core network equipment or OAM, operator or content service provider in the embodiments of this application, which can be performed by... Figure 7 The processing module 710 shown or Figure 8 The processor 801 shown performs actions other than receiving and / or transmitting, which are performed by the core network equipment or OAM, operator, or content service provider in this embodiment of the application. Furthermore, it can be performed by... Figure 9 The transceiver module 920 shown is or Figure 10 The transceiver unit 1010 shown performs the receiving and / or transmitting actions performed by the access network device in this embodiment of the application, and can be... Figure 9 The processing module 910 shown or Figure 10 The processing unit 1020 shown performs actions other than receiving and / or transmitting performed by the access network device in this embodiment of the application.

[0182] like Figure 11 As shown, a communication method provided in this application embodiment may include the following steps:

[0183] S101: The access network device determines the transmission mode of the first MBS service as the first transmission mode, which is a transmission mode that can receive MBS services in any state, including connected state, inactive state or idle state.

[0184] It should be understood that in this application, the connected state includes the RRC connected state. The inactive state includes the RRC inactive state. The idle state includes the RRC idle state.

[0185] It should be understood that, in this application, receiving MBS services includes receiving MBS service configuration information and / or service data. That is, the first transmission mode does not require the terminal device to receive MBS service configuration information and / or service data in RRC connected state; in other words, the terminal device can receive MBS service configuration information and / or service data in the first transmission mode in RRC connected state, RRC inactive state, or RRC idle state.

[0186] S102: The access network device sends the first information to the terminal device. The first information is used to request MBS service interest indication information.

[0187] Specifically, the MBS service interest indication information can be used to indicate whether the terminal device is interested in the first MBS service, and / or to indicate whether the terminal device is currently receiving the first MBS service. Alternatively, the MBS service interest indication information is used to indicate whether the terminal device wishes to receive the first MBS service.

[0188] Optionally, the first information requests MBS service interest indication information by indicating that the first MBS service is transmitted using the first transmission mode. The terminal device can determine the transmission mode of the first MBS service as the first transmission mode based on the first information. If the terminal device is interested in and / or is receiving the first MBS service using the first transmission mode, it needs to report the MBS service interest indication information.

[0189] The first information may include the identifier of the first MBS service. This could be a temporary mobile group identity (TMGI) or MBS service ID belonging to the first MBS service, a temporary radio network identifier used for scheduling the first MBS service, such as a group radio network temporary identifier (G-RNTI), or an MBS session ID used for transmitting the first MBS service, or a protocol data unit (PDU) session ID used for transmitting the first MBS service.

[0190] Optionally, the timing of sending the first information can be determined by the access network device. For example, the access network device may decide when to send the first information based on its own load.

[0191] For example, the access network device may periodically send the first information. Alternatively, the access network device may send the first information before starting the transmission of the first MBS service and / or before ending the transmission of the first MBS service, or before shutting down the first MBS service, to request the terminal device to obtain MBS service interest indication information for the first MBS service. In this application, starting the transmission of the MBS service means that the access network device completes the configuration of the UE's MBS service and begins to transmit MBS service data. Ending the transmission of the MBS service means that the configuration and / or data of the MBS service that the access network device needs to transmit has been transmitted, that is, the transmission of this MBS service has ended. Shutting down the MBS service means that the access network device stops transmitting the configuration and / or data of the MBS service. In this scenario, the MBS service is still in progress, but the access network device no longer transmits the MBS service data. Shutting down the MBS service may also mean that the access network device does not transmit the MBS service data in the cell it manages.

[0192] In one possible example, when the access network device is under high load, the access network device sends a first message to obtain MBS service interest indication information from terminal devices managed by the access network device or terminal devices within the signal coverage area of ​​the access network device for the first MBS service. The first message can be sent via unicast, multicast, or other methods. If no terminal device is interested in the first MBS service and no terminal device is currently receiving the first MBS service, or if there are few terminal devices interested in and receiving the first MBS service, the access network device may shut down the first MBS service to reduce the load.

[0193] Optionally, the first information can be carried in a multicast control channel message or system information (SI). When the first information is carried in an MCCH message, only terminal devices receiving MBS services and / or those interested in MBS services can receive this information, thus preventing other terminal devices from responding to the first information. When carried in an SI, the SI can be a multicast-related SI.

[0194] Optionally, the access network device can implicitly request the terminal device to report its interest in the first MBS service. For example, it can include information such as the identifier of the first MBS service in the first information to request the terminal device's MBS service interest indication information. In this case, the SI (Indicator Sequence) in the first information can carry the identifier of the first MBS service, such as a list of identifiers of the first MBS service. Alternatively, when a certain SI starts broadcasting within the cell, it means that the terminal device needs to report MBS service interest indication information, and the terminal device can read the SI. This SI can carry information such as the identifier of the first MBS service to request the terminal device's MBS service interest indication information.

[0195] Accordingly, the terminal device receives the first information.

[0196] S103: The terminal device sends MBS service interest indication information to the access network device based on the first information.

[0197] Upon receiving the first information, the terminal device sends an MBS service interest indication message to the access network device for the first MBS service.

[0198] Optionally, when the terminal device determines that it is interested in and / or is receiving data from the first MBS service indicated by the first information, the terminal device may send the MBS service interest indication information to the access network device. In this case, the MBS service interest indication information may indicate that the terminal device is interested in the first MBS service and / or indicates that the terminal device is receiving data from the first MBS service. Alternatively, when the terminal device is not interested in the first MBS service and / or is not receiving data from the first MBS service, the terminal device may send the MBS service interest indication information to the access network device. This MBS service interest indication information may be used to indicate that the terminal device is not interested in the first MBS service and / or indicates that the terminal device is not receiving data from the first MBS service. Alternatively, when the terminal device is not interested in the first MBS service and / or is not receiving data from the first MBS service, the terminal device does not send the MBS service interest indication information to the access network device.

[0199] Optionally, if the terminal device is in RRC connected state, it can send the MBS service interest indication information in RRC connected state. Furthermore, if the terminal device is in RRC idle state or RRC inactive state, it can initiate RA and send the MBS service interest indication information after entering RRC connected state; alternatively, the terminal device can send the MBS service interest indication information during RA via signaling in the RA process. The signaling in the RA process can be, for example, messages (msg)1, msg3, and msg5 in a four-step RA process, or msg A in a two-step RA process.

[0200] Optionally, after receiving the first information, the terminal device may send the MBS service interest indication information when the following conditions are met: successful establishment of a connection between the terminal device and the access network device; start or stop of a session for the MBS service of interest; change of the MBS service of interest; change of MBS interest; change of priority between receiving MBS services and unicast receiving services; camping on / handing over to / selecting a new cell; or receiving a request for reporting MBS services of interest or MBS interest from the access network device. After receiving the first information, the terminal device may also periodically report the MBS service interest indication information. The MBS service here may include, but is not limited to, the first MBS service.

[0201] It should be understood that the terminal device may send MBS service interest indication information in the RRC connected state or during the process of entering the RRC connected state. However, this application does not limit the state in which the terminal device receives the first MBS service. That is to say, the terminal device may receive the configuration information and / or data of the first MBS service in any of the states of RRC connected state, RRC inactive state or RRC idle state.

[0202] Accordingly, the access network equipment receives the MBS service interest indication information.

[0203] Optionally, the MBS service interest indication information may include information about the terminal device sending the MBS service interest indication information; alternatively, the MBS service interest indication information may be sent together with the terminal device information; or, the access network device may obtain the information of the terminal device sending the MBS service interest indication information based on the received MBS service interest indication information. The terminal device information includes, for example, a terminal device identifier. Accordingly, the access network device can obtain information about terminal devices interested in and / or currently receiving the first MBS service. Based on the information about terminal devices interested in the first MBS service, the access network device can determine the number of terminal devices receiving / interested in the first MBS service within the cell and the information of each terminal device, thereby enabling the access network device to schedule MBS service data more efficiently and energy-savingly. Furthermore, based on the information about terminal devices interested in and / or currently receiving the first MBS service, the continuity of the first MBS service can be guaranteed, for example, maintaining the transmission continuity of the first MBS service before and after the handover when a terminal device switches cells. Furthermore, when the number of terminal devices interested in and receiving the first MBS service is small, the access network equipment can shut down or terminate the first MBS service, allowing the terminal devices interested in the first MBS service to switch to other neighboring cells to continue receiving the service, thereby achieving energy saving and resource conservation. Here, the transmission mode of the first MBS service is referred to as the first transmission mode.

[0204] Using the above method, the terminal device can report broadcast / multicast service interest indication information for the first MBS service to the access network device. The transmission mode of the first MBS service is the first transmission mode. Therefore, the terminal device no longer needs to report information indicating whether the terminal device is interested in other MBS services or information indicating whether the terminal device is receiving other MBS services, which can reduce uplink overhead.

[0205] In one implementation of S101, the access network device can receive second information and determine the transmission mode of the first MBS service as the first transmission mode based on the second information. Specifically, the second information can be used to indicate the transmission mode of the first MBS service, or in other words, the second information can be used to indicate that the transmission mode of the first MBS service is the first transmission mode. Therefore, the access network device can know that the transmission mode of the first MBS service is the first transmission mode.

[0206] Optionally, the transmission mode of the first MBS service can be determined by Operation Administration and Maintenance (OAM), core network equipment, operators, or content service providers. In other words, the second information can be determined by OAM, core network equipment, operators, or content service providers. Content service providers include, for example, application providers or service providers.

[0207] Optionally, the second information may be used to indicate that the transmission mode of the first MBS service is the first transmission mode, for example, by carrying information indicating that the transmission mode of the first MBS service is the first transmission mode.

[0208] Alternatively, the second information can be used to implicitly indicate the transmission mode of the first MBS service. For example, the second information may include information related to the first MBS service, such as a quality of service (QoS) profile, transmission requirements of the first MBS service from upper-layer systems such as operators and / or content service providers. When the information related to the first MBS service includes specific information, it indicates that the transmission mode of the first MBS service is the first transmission mode; or, when the information related to the first MBS service includes specific information, it indicates that the transmission mode of the first MBS service is the second transmission mode. Conversely, when the information related to the first MBS service does not include specific information, it indicates that the transmission mode of the first MBS service is the second transmission mode; or, when the information related to the first MBS service does not include specific information, it indicates that the transmission mode of the first MBS service is the first transmission mode. In one possible implementation, if the relevant information of the first MBS service does not include information about terminal devices interested in and / or receiving the first MBS service, such as the terminal device identifier (UE ID), then the access network device determines the transmission mode of the first MBS service as a first transmission mode; otherwise, if the relevant information of the first MBS service includes information about terminal devices interested in and / or receiving the first MBS service, then the access network device determines the transmission mode of the first MBS service as a second transmission mode. The QoS-related configuration file may include at least one of the following parameters for the first MBS service: 5G quality identity (5QI), allocation retention priority (ARP), packet error rate, packet delay budget, types of services, guaranteed bit rate (GBR), or non-GBR. When operators and / or content service providers determine the transmission mode of MBS services, they can use OAM to indicate the configuration result of the MBS service transmission mode to core network equipment and / or access network equipment. For example, operators and / or content service providers can use OAM to indicate to core network equipment and / or access network equipment that the MBS service transmission mode is either the first transmission mode or the second transmission mode. Alternatively, the transmission mode of MBS services can be determined by OAM. Or, the transmission requirements of MBS services can be determined by OAM or a server, and these requirements can be used to determine the transmission mode of MBS services. For example, if the parameter requirements for MBS services to meet the first transmission mode are met, then the MBS service can be determined to be in the first transmission mode. The OAM function can be implemented by systems, devices, or equipment.

[0209] Optionally, the OAM may send second information to the core network equipment and / or access network equipment. For example, this second information may indicate that the first MBS service adopts a first transmission mode, or it may indicate that the first MBS service does not adopt a second transmission mode or other transmission modes. The core network equipment sends the second information to the access network equipment based on the information obtained from the OAM.

[0210] Optionally, the second information can be at the core network device level (configured for CN), meaning that this configuration needs to be read by the core network device, or in other words, the second information is configured for the core network device. For example, OAM sends information indicating the transmission mode of the first MBS service to the core network device. After interpreting the information, the core network device sends the second information containing the relevant information to the access network device. The access network device then determines the transmission mode of the first MBS service.

[0211] Optionally, the second information can be at the access network device level (configured for gNB), meaning that this configuration needs to be read by the access network device, or in other words, the second information is configured for the access network device. For example, the OAM sends information indicating the transmission mode of the first MBS service to the core network, and the core network sends this information to the access network device. The access network device interprets this information to determine the transmission mode of the first MBS service.

[0212] Optionally, if the second information is sent to the access network equipment by the OAM, the operator and / or the content service provider, the access network equipment may also send the second information to the core network equipment, or send information to the core network equipment to indicate that the transmission mode of the first MBS service is the first transmission mode.

[0213] Optionally, the second information can also be used to indicate MBS services with the transmission mode set to the second transmission mode.

[0214] Optionally, the second information above can indicate that the transmission mode of the first MBS service is the first transmission mode. For example, the first information carries information such as the identifier of the MBS service, and / or carries indication information indicating that the transmission mode of the MBS service is the first transmission mode and / or the second transmission mode. For example, the indication information can be a bit map associated with a set or configured MBS service list, where bits with a value of 0 correspond to MBS services in the MBS service list with the first or second transmission mode, and bits with a value of 1 correspond to MBS services in the MBS service list with the second or first transmission mode.

[0215] Alternatively, an implicit indication can be used to indicate that the transmission mode of the first MBS service is the first transmission mode. For example, when carrying information such as the identifier of the terminal device, it indicates that the transmission mode of the MBS service of these terminal devices is the first transmission mode; or, it indicates that the transmission mode of the MBS service of these terminal devices is the second transmission mode, and subsequently, the access network device can notify the terminal device to receive the MBS service with the second transmission mode in the connected state based on the identifier of the terminal device. In addition, a combination of explicit and implicit indications can also be used to indicate the transmission mode of the MBS service.

[0216] For example, by Figure 12 The steps shown illustrate the process described above for OAM, operators, or content service providers to notify access network equipment or core network equipment of the transmission mode of the first MBS service. It should be understood that this process can be independent of… Figure 11 The process shown can be implemented separately; or, Figure 12 The process shown can be used as Figure 11 This is part of the steps shown, for example, as one implementation of S101. (e.g.) Figure 12 As shown, the process may include the following steps:

[0217] S201: The OAM, operator, or content service provider determines the transmission mode of the first MBS service as either the first transmission mode or the second transmission mode.

[0218] The OAM, operator, or content service provider can determine the transmission mode of the first MBS service based on at least one of the QoS-related requirements of the first MBS service, operator policies, or content service provider requirements.

[0219] S202: OAM or operator or content service provider sends indication information on the transmission mode of the first MBS service.

[0220] The indication information is used to indicate whether the transmission mode of the first MBS service is a first transmission mode or a second transmission mode. This indication information can explicitly or implicitly indicate whether the transmission mode of the first MBS service is the first transmission mode or the second transmission mode. The methods of explicit and / or implicit indication are as described above. For example, explicit indication may include information or a bitmap indicating whether the transmission mode of the first MBS service is the first transmission mode or the second transmission mode. Implicit indication may include information such as a terminal device identifier, indicating that the transmission mode of the MBS service is the first transmission mode or the second transmission mode.

[0221] In S202, this instruction information can be sent to core network equipment or received by access network equipment.

[0222] If the core network equipment receives this indication information, it can be determined by the OAM (Operator, Provider, or Content Provider), thus enabling configuration for the core network (CN). Configuration for the core network refers to the OAM, operator, or content provider configuring the transmission mode of the first MBS service at the CN level, or configuration visible to and interpretable by the core network equipment. In this case, the core network equipment can send the indication information of the transmission mode of the first MBS service to the access network equipment, thereby informing the access network equipment of the transmission mode of the first MBS service. The core network equipment can send this indication information to the access network equipment in an explicit, implicit, or combined manner.

[0223] If the access network device receives this indication information, it can determine the transmission mode of the first MBS service. This indication information can be forwarded by the core network device or sent to the access network device.

[0224] If the indication information is received by the access network device, it can be determined by the OAM, operator, content service provider, or core network device, thus enabling configuration for the gNB. Configuration for the access network device refers to the configuration of the transmission mode of the first MBS service by the OAM, operator, content service provider, or core network device at the access network device level, or configuration visible to and interpretable by the access network device. Optionally, the access network device can send indication information of the transmission mode of the first MBS service to the core network device, thereby notifying the core network device of the transmission mode of the first MBS service. The access network device can send this indication information to the core network device in an explicit, implicit, or combined manner. Explicit indications include, for example, carrying information or bitmaps indicating whether the transmission mode of the first MBS service is a first or second transmission mode. Implicit indications include, for example, when the indication information carries information such as the terminal device identifier, indicating that the transmission mode of the MBS service is the first or second transmission mode.

[0225] Using the above process, the operator can configure and indicate the transmission mode of the MBS service to the access network equipment, and the access network equipment can then determine whether the transmission mode of the MBS service is the first transmission mode or the second transmission mode.

[0226] In another implementation of S101, the core network equipment and / or access network equipment can obtain a first condition and determine whether the MBS service is the first MBS service based on the first condition. It should be understood that obtaining the first condition here can be achieved by the core network equipment and / or access network equipment receiving the first condition from OAM, operators, content service providers, or other nodes, or it can be obtained locally. When the core network equipment and / or access network equipment obtains the first condition locally, the first condition can be determined by the core network equipment and / or access network equipment, or the first condition can be stored in the core network equipment and / or access network equipment.

[0227] If the core network equipment determines whether the MBS service is the first MBS service, then in S101, the core network equipment can indicate the determination result to the access network equipment. If the access network equipment determines whether the MBS service is the first MBS service, then in S101, the access network equipment can determine whether the MBS service meets the first condition; if so, then the MBS service is the first MBS service.

[0228] Optionally, core network equipment and / or access network equipment may receive configuration information from content service providers, operators, or OAM (Operations and Access Management). This configuration information is used to configure the core network equipment and / or access network equipment to obtain a first condition and determine the transmission mode of the MBS service based on the first condition. This transmission mode is either a first transmission mode or a second transmission mode. Specifically, the MBS service that satisfies the first condition is the first MBS service, or in other words, the transmission mode of the MBS service that satisfies the first condition is the first transmission mode. Conversely, the transmission mode of the MBS service that does not satisfy the first condition is the second transmission mode or another transmission mode.

[0229] The first condition can be a transmission parameter condition. When the transmission parameters and / or transmission requirements of the first MBS service meet the transmission parameter condition, the transmission mode of the first MBS service can be determined to be the first transmission mode. Optionally, if the first condition is not met, the transmission mode of the first MBS service is determined to be the second transmission mode.

[0230] For example, if the QoS level of the first MBS service is not higher than a threshold, then when the access network device determines that the QoS level of the first MBS service is not higher than the threshold, it determines the transmission mode of the first MBS service to be the first transmission mode. The QoS level of the first MBS service can be pre-configured or configured by the access network device and / or the core network device. The QoS level can be indicated by at least one parameter among ARP, packet error rate, packet delay budget, types of services, or GBR / non-GBR; or, the QoS level can include at least one parameter among ARP, packet error rate, packet delay budget, types of services, or GBR / non-GBR. The threshold is a value specified by a setting corresponding to the QoS level, or by OAM, the operator, the content service provider, or the core network device. For example, if the QoS level is indicated by the packet error rate, then the threshold is the set value of the packet error rate.

[0231] Additionally, the first condition may also include the 5QI of the MBS service in the first transmission mode and / or the second transmission mode. When the 5QI of the first MBS service is one of the 5QIs of the MBS service in the first transmission mode indicated by the first condition, the first MBS service is the MBS service in the first transmission mode. Otherwise, if the 5QI of the first MBS service is not one of the 5QIs of the MBS service in the first transmission mode indicated by the first condition, the first MBS service is the MBS service in the second transmission mode.

[0232] It should be understood that when the core network equipment determines the transmission mode of the first MBS service based on the first condition, the first condition may be determined and sent to the core network equipment by the OAM, the operator, or the content service provider, etc. Furthermore, the first condition may also be determined by the core network equipment and / or stored in the core network equipment.

[0233] Furthermore, if the core network device determines the transmission mode of the first MBS service based on the first condition, then in the implementation of S101, the core network device can send second information to the access network device to indicate that the transmission mode of the first MBS service is the first transmission mode. The access network device then learns that the transmission mode of the first MBS service is the first transmission mode based on the second information. Before sending the second information, the core network device can determine whether the first MBS service meets the first condition. If it does, then the transmission mode of the first MBS service is the first transmission mode.

[0234] When the access network equipment determines the transmission mode of the first MBS service based on the first condition, the first condition may be determined by the OAM, core network equipment, operator, or content service provider, etc. Furthermore, the first condition may also be determined by the access network equipment and / or stored in the access network equipment.

[0235] Furthermore, if the access network device determines the transmission mode of the first MBS service based on the first condition, then in S101, the access network device can obtain third information, which can indicate the first condition and determine whether the first MBS service meets the first condition. If it does, then the transmission mode of the first MBS service is the first transmission mode.

[0236] Optionally, when the access network device determines the transmission mode of the first MBS service based on the first condition, the access network device may also send fourth information to the core network device. This fourth information indicates that the transmission mode of the first MBS service is the first transmission mode, so that the core network device can know the transmission mode of the first MBS service. The transmission mode of the first MBS service can be either the first transmission mode or the second transmission mode.

[0237] For example, by Figure 13 The steps shown illustrate the process by which the access network device determines the transmission mode of the first MBS service based on the first condition, as described above. It should be understood that this process can be independent of... Figure 11 The process shown can be implemented separately; or, Figure 13 The process shown can be used as part or all of the process. Figure 11 This is part of the steps shown, for example, as one implementation of S101. The process may include the following steps:

[0238] S301: Access network devices obtain the first condition.

[0239] The first condition can be obtained from OAM, operators, content service providers, or core network equipment. Alternatively, the first condition can be determined by the access network equipment or stored in the access network equipment.

[0240] The first condition may be, for example, a QoS condition, or the first condition may include 5QI for MBS services in a first transmission mode and / or a second transmission mode.

[0241] Optionally, in S301, the access network device may receive a first condition from the OAM, the operator, the content service provider, or the core network device. This first condition may be determined by the OAM, the operator, the content service provider, or the core network device.

[0242] Optionally, the first condition is determined by the access network device and / or stored in the access network device.

[0243] S302: The access network equipment determines whether the first MBS service meets the first condition. The MBS service that meets the first condition is the first MBS service. Or, in other words, the transmission mode of the MBS service that meets the first condition is the first transmission mode.

[0244] Using the above process, the access network equipment can determine the transmission mode of the MBS service. Therefore, the access network equipment can know whether the transmission mode of the first MBS service is the first transmission mode or the second transmission mode. S102 and S103 can then be executed.

[0245] Optionally, after S302, the access network device may send a fourth message to the core network device, which is used to indicate the transmission mode of the first MBS service.

[0246] For example, by Figure 14 The steps illustrated describe the process by which the core network device determines and indicates the transmission mode of the first MBS service to the access network device in this embodiment of the application. It should be understood that this process can be independent of... Figure 11 The process shown can be implemented separately; or, Figure 14 The process shown can be used as part or all of the process. Figure 11 This is part of the steps shown, for example, as one implementation of S101. (e.g.) Figure 14 As shown, the process may include the following steps:

[0247] S401: The core network equipment determines whether the transmission mode of the first MBS service is the first transmission mode or the second transmission mode.

[0248] For example, the transmission mode of the first MBS service can be configured in the core network equipment. Based on this configuration, the core network equipment stores indication information of the transmission mode of the first MBS service, which indicates whether the transmission mode of the first MBS service is the first transmission mode or the second transmission mode. This indication information can be configured by the OAM, the operator, the content service provider, or the core network equipment.

[0249] Alternatively, the core network equipment may receive fifth information, such as indication information of the transmission mode of the first MBS service. The core network equipment can determine the transmission mode of the first MBS service based on this fifth information. This fifth information may come from OAM, the operator, the content service provider, or the core network equipment.

[0250] Alternatively, the core network equipment can determine whether the transmission mode of the first MBS service is a first transmission mode or a second transmission mode. For example, the core network equipment determines whether the QoS level of the first MBS service meets a first condition. If it does, the transmission mode of the first MBS service is determined to be the first transmission mode. Otherwise, if it does not meet the condition, the transmission mode of the first MBS service is determined to be the second transmission mode or another transmission mode. In this case, the MBS service that meets the first condition is the first MBS service, or in other words, the transmission mode of the MBS service that meets the first condition is the first transmission mode.

[0251] The first condition may be, for example, a QoS condition, or the first condition may include 5QI for MBS services in a first transmission mode and / or a second transmission mode.

[0252] The configuration method for this first condition can be found in the foregoing description. For example, the first condition can be configured by OAM, the operator, or the content service provider.

[0253] S402: The core network equipment sends the transmission mode indication information of the first MBS service to the access network equipment.

[0254] This indication information is used to indicate whether the transmission mode of the first MBS service is a first transmission mode, a second transmission mode, or another transmission mode. For example, if the transmission mode of the first MBS service is the first transmission mode, the core network device can send information indicating that the transmission mode of the first MBS service is the first transmission mode; if the transmission mode of the first MBS service is the second transmission mode, the core network device can send information indicating that the transmission mode of the first MBS service is the second transmission mode.

[0255] Accordingly, the access network device receives indication information of the transmission mode of the first MBS service. The access network device can then determine the transmission mode of the first MBS service.

[0256] Using the above process, the core network equipment can determine and indicate the transmission mode of the MBS service to the access network equipment, which then learns whether the MBS service transmission mode is the first or the second transmission mode. Steps S102 and S103 can then be executed.

[0257] For example, in S402 and / or S502, the indication information of the transmission mode of the first MBS service can be displayed to indicate that the transmission mode of the first MBS service is a first transmission mode or a second transmission mode. For example, the indication information includes a bit map associated with a list of MBS services of interest to the terminal device or a set or configured list of MBS services.

[0258] Alternatively, the indication information may implicitly indicate whether the transmission mode of the MBS service is a first transmission mode or a second transmission mode. When the transmission mode of the MBS service is implicitly indicated, the indication information may include information indicating whether the terminal device is allowed to return to or enter the RRC idle state or RRC inactive state after registration, or information such as a request message to determine whether the terminal device should report MBS service interest indication information for the MBS service. Therefore, after receiving the indication information, the terminal device may return to or enter the RRC idle state or RRC inactive state according to the network device's instruction or its own decision, and / or report MBS service interest indication information for the MBS service after receiving the indication information.

[0259] The indication information may include the identifier of the first MBS service, the temporary identifier of the wireless network belonging to the first MBS service for scheduling or the MBS session identifier for transmitting multicast services, or the protocol data unit session identifier for transmitting multicast services, etc.

[0260] like Figure 15 As shown, if the transmission mode of the first MBS service is determined by the core network equipment, the core network equipment can also indicate the transmission mode of the first MBS service to the terminal equipment, and the terminal equipment can report MBS service interest indication information to the access network equipment. It should be understood that this process can be independent of... Figure 11 The process shown is implemented separately. For example... Figure 15 As shown, the process may include the following steps:

[0261] S501: The core network equipment determines whether the transmission mode of the first MBS service is the first transmission mode or the second transmission mode.

[0262] The implementation of S501 can refer to S401.

[0263] S502: The core network equipment sends the transmission mode indication information of the first MBS service to the terminal equipment.

[0264] The implementation of S502 can refer to S402.

[0265] S503: If the transmission mode of the first MBS service is the first transmission mode, and the terminal device is interested in the first MBS service and / or is receiving the first MBS service, the terminal device sends MBS service interest indication information to the access network device.

[0266] Among them, the MBS service interest indication information is used to indicate that the terminal device is interested in the first MBS service and / or is receiving the first MBS service.

[0267] Using the above process, the core network equipment can determine and indicate the transmission mode of MBS services to the terminal equipment, and the terminal equipment can report MBS service interest indication information to the access network equipment.

[0268] If the core network equipment determines the transmission mode of the first MBS service, and the core network equipment indicates the transmission mode of the first MBS service to the terminal equipment, then the communication method provided in this application embodiment may include... Figure 16 The following steps are shown:

[0269] S601: Optional, the core network equipment receives information from the terminal equipment indicating the first MBS service.

[0270] The first MBS service is the MBS service that the terminal device is interested in, wants to receive, and / or is currently receiving.

[0271] The information indicating the first MBS service can be sent from the terminal device to the core network device during the registration process. Therefore, the core network can obtain information about terminal devices interested in the first MBS service during the registration process. It should be understood that this information can also come from access network devices, other core network devices, or other nodes in the network. For example, access network devices, other core network devices, or other nodes in the network can forward the information about the first MBS service from the terminal device to the core network device.

[0272] The information used to indicate the first MBS service may include the identifier of the first MBS service, the temporary identifier of the wireless network used to schedule the first MBS service, the MBS session identifier used to transmit the first MBS service, or the PDU session identifier used to transmit the first MBS service, etc.

[0273] S602: The core network equipment determines the transmission mode of the first MBS service.

[0274] The core network equipment can determine whether the transmission mode of the first MBS service is a first transmission mode or a second transmission mode. The method by which the core network equipment determines whether the transmission mode of the first MBS is the first transmission mode or the second transmission mode can be found in the foregoing description in this application, for example, referring to the description of step S401.

[0275] S603: The core network equipment sends the sixth information to the terminal equipment. The sixth information can be used to indicate whether the transmission mode of the first MBS service is the first transmission mode or the second transmission mode.

[0276] Optionally, the sixth piece of information may specifically indicate whether the transmission mode of the first MBS service of the terminal device is the first transmission mode or the second transmission mode. Optionally, the sixth piece of information may specifically indicate whether at least one of the MBS services or multiple MBS services reported by the terminal device during registration is in the first transmission mode or the second transmission mode.

[0277] S604: If the transmission mode of the first MBS service is the first transmission mode, and the terminal device is interested in and / or is receiving the first MBS service, then the terminal device sends MBS service interest indication information to the access network device to indicate that the transmission mode of the first MBS service is the first transmission mode. The setting and / or sending method of this MBS service interest indication information can be found in the description of S103 above.

[0278] For example, the MBS service interest indication information can indicate that the terminal device is interested in the first MBS service and / or indicates that the terminal device is receiving data from the first MBS service, or indicate that the terminal device is not interested in the first MBS service and / or indicates that the terminal device is not receiving data from the first MBS service.

[0279] Optionally, if the transmission mode of the first MBS service is the first transmission mode, the terminal device may send the MBS service interest indication information when the following conditions are met: successful establishment of a connection between the terminal device and the access network device; start or stop of the session of the MBS service of interest; change of the MBS service of interest; change of priority between MBS service reception and unicast reception; camping on / handing over to / selecting a new cell; or receiving an MBS service of interest reporting request or MBS interest reporting request from the access network device. The terminal device may also periodically report the MBS service interest indication information. The MBS service here may include, but is not limited to, the first MBS service.

[0280] Accordingly, the access network equipment receives the MBS service interest indication information.

[0281] Using the above method, the terminal device can report the broadcast / multicast service interest indication information of the first MBS service to the access network device. The transmission mode of the first MBS service is the first transmission mode. Therefore, the terminal device no longer needs to report information indicating whether the terminal device is interested in other MBS services and information indicating whether the terminal device is receiving other MBS services, which can reduce uplink overhead.

[0282] Additionally, the terminal device can also obtain indication information of the transmission mode of the first MBS service from the server. For example, the terminal device can obtain this indication information from the server through a communication process. Optionally, it can be obtained through communication between the terminal device's application layer and the server. Here, the server is, for example, an application server (AS).

[0283] like Figure 17 As shown, if the terminal device obtains the transmission mode indication information of the first MBS service from the server, another communication method provided in this application embodiment may include the following steps:

[0284] S701: The terminal device obtains sixth information from the server. This sixth information may indicate whether the transmission mode of the first MBS service is a first transmission mode or a second transmission mode. The first MBS service may be an MBS service that the terminal device is interested in. Optionally, before S701, the terminal device may indicate the first MBS service to the server.

[0285] For example, a terminal device may send information to a server indicating that it is interested in a first MBS service, such as an identifier or cell; or send a message to the server requesting the transmission mode of the first MBS service that the terminal device is interested in; or carry information about the first MBS service in a message sent to the server requesting registration with the server; or send information to the server requesting to join a multicast group of the first MBS service.

[0286] Optionally, the server can query the corresponding transmission mode based on the identifier of the MBS service that the terminal device is interested in, in order to determine the transmission mode of the MBS service that the terminal device is interested in. For example, the server can query the user service description (USD) based on the identifier of the MBS service that the terminal device is interested in to determine the transmission mode of the MBS service.

[0287] It should be understood that the process by which the terminal device instructs the server on the first MBS service and / or the process by which the terminal device obtains the sixth information can be implemented by the application layer of the terminal device.

[0288] S702: If the transmission mode of the first MBS service is the first transmission mode, and the terminal device is interested in the first MBS service and / or is receiving the first MBS service, the terminal device sends MBS service interest indication information to the access network device.

[0289] The MBS service interest indication information is used to indicate that the terminal device is interested in the first MBS service and / or that the terminal device is receiving the first MBS service.

[0290] The method for setting and / or sending the MBS service interest indication information can be found in the foregoing description, for example, referring to the explanation of the steps shown in S103. The difference between S702 and S103 is that here the terminal device actively reports to the access network device, instead of reporting based on the first information from the access network device as in S103.

[0291] Accordingly, the access network equipment receives the MBS service interest indication information.

[0292] Using the above method, the terminal device can report the MBS service interest indication information of the first MBS service to the access network device. Therefore, the terminal device no longer needs to report information indicating whether the terminal device is interested in other MBS services and information indicating whether the terminal device is receiving other MBS services, which can reduce uplink overhead.

[0293] This application provides a communication device. This communication device can be used to implement the terminal equipment described in the above embodiments, and the communication device may include… Figure 5 and / or Figure 6 The structure shown.

[0294] This application provides a communication device. This communication device can be used to implement the core network equipment, OAM, operator, content service provider, or server involved in the above embodiments. The communication device may include… Figure 7 and / or Figure 8 The structure shown.

[0295] This application provides a communication device. This communication device can be used to implement the access network equipment involved in the above embodiments, and the communication device may include... Figure 9 and / or Figure 10 The structure shown.

[0296] This application provides a communication system. The communication system may include at least two of the terminal devices, core network devices, access network devices, OAM (Operational Access Management), operators, content service providers, or servers mentioned in the above embodiments. Optionally, the communication system may execute the method embodiments described above. Figures 10-17 Any of the communication methods shown in the figure.

[0297] This application also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a computer, the computer can implement the processes related to terminal devices, core network devices, access network devices, OAM, operators, content service providers, or servers in any of the embodiments shown in the above method embodiments.

[0298] This application also provides a computer program product for storing a computer program. When the computer program is executed by a computer, the computer can implement the processes related to terminal devices, core network devices, access network devices, OAM, operators, content service providers, or servers in any of the embodiments shown in the above method embodiments.

[0299] This application also provides a chip or chip system. The chip may include a processor, which can be used to call programs or instructions in memory to execute processes related to terminal devices, core network devices, access network devices, OAM, operators, content service providers, or servers in any of the embodiments shown in the above method embodiments. The chip system may include the chip, as well as other components such as memory or transceivers.

[0300] This application also provides a circuit that can be coupled to a memory and can be used to execute processes related to terminal devices, core network devices, access network devices, OAM, operators, content service providers, or servers in any of the embodiments shown in the above method embodiments. The chip system may include this chip, as well as other components such as memory or transceivers.

[0301] It should be understood that the processor mentioned in the embodiments of this application can be a CPU, or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0302] It should also be understood that the memory mentioned in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0303] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory or storage module is integrated into the processor.

[0304] It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

[0305] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0306] Those skilled in the art will recognize that the modules and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0307] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and modules described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0308] In the several embodiments provided in this application, it should be understood that the disclosed communication methods and apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0309] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0310] In addition, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module.

[0311] If this function is implemented as a software module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the contributing part, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device, such as a personal computer, server, or network device, to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned computer-readable storage medium can be any available medium that a computer can access. For example, but not limited to: computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), universal serial bus flash disk, portable hard disk, or other optical disc storage, disk storage media, or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer.

[0312] The above descriptions are merely specific embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the embodiments of this application should be included within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of this application should be determined by the protection scope of the claims.

Claims

1. A communication method, characterized in that, include: The transmission mode of the first broadcast multicast service is determined to be either a first transmission mode or a second transmission mode. The first transmission mode is a transmission mode in which the terminal device can receive the broadcast multicast service in any of the states of connected state, inactive state, or idle state. The second transmission mode is a transmission mode in which the terminal device can receive the broadcast multicast service in the connected state but cannot receive the broadcast multicast service in the inactive state or idle state. Alternatively, the second transmission mode is a transmission mode of the broadcast multicast service that is available in the connected state. Send a second message to the access network device. The second message is used to indicate the transmission mode of the first broadcast multicast service. The second message includes a service quality-related configuration file of the first broadcast multicast service. The service quality-related configuration file includes the 5G quality identifier of the first broadcast multicast service.

2. The method as described in claim 1, characterized in that, The second information also includes indication information of the transmission mode of the first broadcast multicast service. The indication information includes the identifier of the first broadcast multicast service, a temporary identifier of the wireless network belonging to the first broadcast multicast service for scheduling, a broadcast multicast session identifier for transmitting multicast services, or a protocol data unit session identifier for transmitting multicast services.

3. The method as described in claim 2, characterized in that, The indication information includes information indicating that the terminal device is allowed to return to or enter an idle or inactive state after registration.

4. The method according to any one of claims 1-3, characterized in that, The second information is configured by the operation and maintenance management equipment, the operator, the content service provider, or the core network equipment.

5. A communication method, characterized in that, include: The system receives second information from the core network equipment. This second information indicates the transmission mode of a first broadcast multicast service. The transmission mode of the first broadcast multicast service is either a first transmission mode or a second transmission mode. The first transmission mode is one in which the terminal device can receive the broadcast multicast service in any of the connected, inactive, or idle states. The second transmission mode is one in which the terminal device can receive the broadcast multicast service in the connected state but cannot receive it in the inactive or idle states. Alternatively, the second transmission mode is a transmission mode for a broadcast multicast service available in the connected state. The second information indicates the transmission mode of the first broadcast multicast service and includes a service quality-related configuration file for the first broadcast multicast service, which includes the 5G quality identifier of the first broadcast multicast service.

6. The method as described in claim 5, characterized in that, The second information also includes indication information of the transmission mode of the first broadcast multicast service. The indication information includes the identifier of the first broadcast multicast service, a temporary identifier of the wireless network belonging to the first broadcast multicast service for scheduling, a broadcast multicast session identifier for transmitting multicast services, or a protocol data unit session identifier for transmitting multicast services.

7. The method as described in claim 6, characterized in that, The indication information includes information indicating that the terminal device is allowed to return to or enter an idle or inactive state after registration.

8. The method as described in any one of claims 5-7, characterized in that, The second information is configured by the operation and maintenance management equipment, the operator, the content service provider, or the core network equipment.

9. A communication method, characterized in that, include: The core network equipment determines the transmission mode of the first broadcast multicast service as either a first transmission mode or a second transmission mode. The first transmission mode is a transmission mode in which the terminal equipment can receive the broadcast multicast service in any of the connected, inactive, or idle states. The second transmission mode is a transmission mode in which the terminal equipment can receive the broadcast multicast service in the connected state but cannot receive the broadcast multicast service in the inactive or idle states. Alternatively, the second transmission mode is a transmission mode for broadcast multicast services that are available in the connected state. The core network device sends second information to the access network device. The second information is used to indicate the transmission mode of the first broadcast multicast service. The second information includes a service quality-related configuration file of the first broadcast multicast service. The service quality-related configuration file includes the 5G quality identifier of the first broadcast multicast service. The access network device receives the second information from the core network device.

10. The method as described in claim 9, characterized in that, The second information also includes indication information of the transmission mode of the first broadcast multicast service. The indication information includes the identifier of the first broadcast multicast service, a temporary identifier of the wireless network belonging to the first broadcast multicast service for scheduling, a broadcast multicast session identifier for transmitting multicast services, or a protocol data unit session identifier for transmitting multicast services.

11. The method as described in claim 10, characterized in that, The indication information includes information indicating that the terminal device is allowed to return to or enter an idle or inactive state after registration.

12. The method according to any one of claims 9-11, characterized in that, The second information is configured by the operation and maintenance management equipment, the operator, the content service provider, or the core network equipment.

13. A communication device, characterized in that, include: The processing module is used to determine whether the transmission mode of the first broadcast multicast service is a first transmission mode or a second transmission mode, wherein the first transmission mode is a transmission mode in which the terminal device can receive the broadcast multicast service in any state of connected state, inactive state or idle state, the second transmission mode is a transmission mode in which the terminal device can receive the broadcast multicast service in connected state but cannot receive the broadcast multicast service in inactive state and idle state, or the second transmission mode is a transmission mode of the broadcast multicast service available in connected state. A communication module is used to send second information to the access network device. The second information is used to indicate the transmission mode of the first broadcast multicast service. The second information includes a service quality-related configuration file of the first broadcast multicast service, and the service quality-related configuration file includes the 5G quality identifier of the first broadcast multicast service.

14. The apparatus as claimed in claim 13, characterized in that, The second information also includes indication information of the transmission mode of the first broadcast multicast service. The indication information includes the identifier of the first broadcast multicast service, a temporary identifier of the wireless network belonging to the first broadcast multicast service for scheduling, a broadcast multicast session identifier for transmitting multicast services, or a protocol data unit session identifier for transmitting multicast services.

15. The apparatus as claimed in claim 14, characterized in that, The indication information includes information indicating that the terminal device is allowed to return to or enter an idle or inactive state after registration.

16. The apparatus according to any one of claims 13-15, characterized in that, The second information is configured by the operation and maintenance management equipment, the operator, the content service provider, or the core network equipment.

17. A communication device, characterized in that, include: A communication module is configured to receive second information from a core network device. This second information indicates the transmission mode of a first broadcast multicast service. The transmission mode of the first broadcast multicast service is either a first transmission mode or a second transmission mode. The first transmission mode is a transmission mode in which the terminal device can receive the broadcast multicast service in any of the connected, inactive, or idle states. The second transmission mode is a transmission mode in which the terminal device can receive the broadcast multicast service in the connected state but cannot receive it in the inactive or idle states. Alternatively, the second transmission mode is a transmission mode for a broadcast multicast service available in the connected state. The second information indicates the transmission mode of the first broadcast multicast service and includes a service quality-related configuration file for the first broadcast multicast service. The service quality-related configuration file includes a 5G quality identifier for the first broadcast multicast service.

18. The apparatus as claimed in claim 17, characterized in that, The second information also includes indication information of the transmission mode of the first broadcast multicast service. The indication information includes the identifier of the first broadcast multicast service, a temporary identifier of the wireless network belonging to the first broadcast multicast service for scheduling, a broadcast multicast session identifier for transmitting multicast services, or a protocol data unit session identifier for transmitting multicast services.

19. The apparatus as claimed in claim 18, characterized in that, The indication information includes information indicating that the terminal device is allowed to return to or enter an idle or inactive state after registration.

20. The apparatus according to any one of claims 17-19, characterized in that, The second information is configured by the operation and maintenance management equipment, the operator, the content service provider, or the core network equipment.

21. A communication system, characterized in that, include: The core network equipment is used to determine whether the transmission mode of the first broadcast multicast service is a first transmission mode or a second transmission mode, wherein the first transmission mode is a transmission mode in which the terminal device can receive the broadcast multicast service in any state of connected state, inactive state or idle state, the second transmission mode is a transmission mode in which the terminal device can receive the broadcast multicast service in connected state but cannot receive the broadcast multicast service in inactive state and idle state, or the second transmission mode is a transmission mode of the broadcast multicast service available in connected state. The core network equipment is used to send second information to the access network equipment. The second information is used to indicate the transmission mode of the first broadcast multicast service. The second information includes a service quality-related configuration file of the first broadcast multicast service. The service quality-related configuration file includes the 5G quality identifier of the first broadcast multicast service. The access network device is used to receive the second information from the core network device.

22. The system as claimed in claim 21, characterized in that, The second information also includes indication information of the transmission mode of the first broadcast multicast service. The indication information includes the identifier of the first broadcast multicast service, a temporary identifier of the wireless network belonging to the first broadcast multicast service for scheduling, a broadcast multicast session identifier for transmitting multicast services, or a protocol data unit session identifier for transmitting multicast services.

23. The system as described in claim 22, characterized in that, The indication information includes information indicating that the terminal device is allowed to return to or enter an idle or inactive state after registration.

24. The system as described in any one of claims 21-23, characterized in that, The second information is configured by the operation and maintenance management equipment, the operator, the content service provider, or the core network equipment.

25. A communication device, characterized in that, include: Memory, used to store instructions; A processor for retrieving and executing the instructions from the memory, causing the communication device to perform the method as described in any one of claims 1-4.

26. A communication device, characterized in that, include: Memory, used to store instructions; A processor for retrieving and executing the instructions from the memory, causing the communication device to perform the method as described in any one of claims 5-8.

27. A communication system, characterized in that, It includes the communication device as described in any one of claims 13-16 or 25 and the communication device as described in any one of claims 17-20 or 26.

28. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when invoked and executed on a computer, cause the computer to perform the method as described in any one of claims 1-8.

29. A computer program product, characterized in that, When the computer program product is run on a computer, it causes the computer to perform the method as described in any one of claims 1-8.

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