WO2021190498A1 - 传输模式转换指示方法、接入网设备及终端设备 - Google Patents

传输模式转换指示方法、接入网设备及终端设备 Download PDF

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Publication number
WO2021190498A1
WO2021190498A1 PCT/CN2021/082366 CN2021082366W WO2021190498A1 WO 2021190498 A1 WO2021190498 A1 WO 2021190498A1 CN 2021082366 W CN2021082366 W CN 2021082366W WO 2021190498 A1 WO2021190498 A1 WO 2021190498A1
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Prior art keywords
multicast group
transmission mode
information
mode conversion
user
Prior art date
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PCT/CN2021/082366
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English (en)
French (fr)
Inventor
谢振华
张艳霞
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维沃移动通信有限公司
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Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to EP21776114.7A priority Critical patent/EP4106355A4/en
Priority to KR1020227035137A priority patent/KR102679623B1/ko
Publication of WO2021190498A1 publication Critical patent/WO2021190498A1/zh
Priority to US17/940,468 priority patent/US20230007533A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/186—Processing of subscriber group data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Definitions

  • the present invention relates to the field of communications, in particular to a transmission mode conversion indication method, access network equipment and terminal equipment.
  • the network side When the network side provides content services for the terminal device, it can send data to the peer-to-peer terminal device through the point-to-point transmission mode.
  • the dedicated mode that is, the core network and the base station use each user's dedicated transmission channel to transmit service data.
  • the shared mode that is, the core network and the base station use a transmission channel shared by multiple users to transmit service data.
  • the application server When the application server provides content services for the terminal device, it can send data to the peer-to-peer terminal device through the point-to-point transmission mode. For example, in unicast mode, the application server uses the IP addresses of different terminals as targets to send data separately.
  • the application server uses a multicast IP address to send a piece of data, which is distributed by the network to the members of the corresponding multicast group.
  • the purpose of the embodiments of the present invention is to provide a transmission mode conversion instruction method, access network equipment, core network equipment, and terminal equipment, so that the network side can trigger transmission mode conversion and improve resource utilization.
  • a transmission mode conversion indication method is provided, which is applied to a base station, and the method includes: sending a first message to a core network or sending a second message to a terminal device to indicate that a transmission mode conversion is required.
  • the first message carries first user information and first multicast group information.
  • a method for indicating a transmission mode switch is provided, which is applied to a network function node, and the method includes: receiving a first message carrying first multicast group information and first user information, or using a first multicast group The operation in which the group information and the first user information are parameters is invoked; and the transmission mode conversion instruction is sent to the terminal device associated with the first user information.
  • a transmission mode conversion method which is applied to a terminal device, and the method includes: receiving a transmission mode conversion instruction, and performing transmission mode conversion according to the transmission mode conversion instruction.
  • an access network device including: a sending module, configured to send a first message to a core network or a second message to a terminal device, indicating that a transmission mode conversion is required, wherein the first The message carries the first user information and the first multicast group information.
  • a core network device including: a trigger module, configured to receive a first message carrying first multicast group information and first user information, or use first multicast group information and first When the operation in which the user information is a parameter is invoked, the sending module is triggered; the sending module is configured to send a transmission mode conversion instruction to the terminal device associated with the first user information.
  • a terminal device including: a receiving module, configured to receive a transmission mode conversion instruction, and perform transmission mode conversion according to the transmission mode conversion instruction.
  • an access network device including: a memory, a processor, and a computer program that is stored in the memory and can run on the processor, and the computer program is executed when the processor is executed The steps of the method as described in the first aspect.
  • a core network device a memory, a processor, and a computer program stored on the memory and capable of running on the processor, and the computer program is executed by the processor to achieve the second The steps of the method described in the aspect.
  • a terminal device including: a memory, a processor, and a computer program stored on the memory and capable of being run on the processor.
  • the computer program When the computer program is executed by the processor, the following The steps of the method described in three aspects.
  • a computer-readable storage medium is provided, and a computer program is stored on the computer-readable storage medium. Steps of the method.
  • the base station may send a message to the core network or the terminal device to indicate that the transmission mode conversion is required, and send the multicast information of the multicast service that requires the mode conversion to the core network or the terminal device. Therefore, after receiving the message, the core network or the terminal device can switch the transmission mode to improve the utilization rate of resources.
  • FIG. 1 is a schematic flowchart of a method for indicating a transmission mode switch provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of another flow chart of a method for indicating a transmission mode switch provided by an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a transmission mode conversion method provided by an embodiment of the present invention.
  • FIG. 4 is another schematic flowchart of a transmission mode conversion method provided by an embodiment of the present invention.
  • FIG. 5 is another schematic flowchart of a transmission mode conversion method provided by an embodiment of the present invention.
  • FIG. 6 is another schematic flowchart of a transmission mode conversion method provided by an embodiment of the present invention.
  • FIG. 7 is another schematic flowchart of a transmission mode conversion method provided by an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of an access network device according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a core network device according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a network device provided by an embodiment of the present invention.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • GSM Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Advanced
  • NR New Radio
  • the user equipment can be connected to one or more cores via a radio access network (for example, RAN, Radio Access Network)
  • the user equipment can be a mobile terminal, such as a mobile phone (or “cellular” phone) and a computer with a mobile terminal.
  • a mobile terminal such as a mobile phone (or “cellular” phone) and a computer with a mobile terminal.
  • a mobile terminal such as a mobile phone (or “cellular” phone) and a computer with a mobile terminal.
  • it can be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device. , They exchange language and/or data with the wireless access network.
  • the base station can be a base station (BTS, Base Transceiver Station) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved base station
  • gNB 5G base station
  • the 5G base station (gNB) is not limited in the present invention, but for the convenience of description, the following embodiments take gNB as an example for description.
  • FIG. 1 is a schematic flowchart of a method for indicating a transmission mode switch provided in an embodiment of the present invention, and the method 100 may be executed by a base station.
  • the method can be executed by software or hardware installed on the base station.
  • the method may include the following steps.
  • S110 Send a first message to the core network, or send a second message to the terminal device, indicating that transmission mode conversion is required, where the first message carries first user information and first multicast group information.
  • the first user information carried in the first message sent to the core network is used to indicate the terminal device that needs to perform transmission mode conversion.
  • the core network After the core network receives the first message, it can be based on the first user information. , Sending a transmission mode conversion instruction to the terminal device related to the first user information, instructing the corresponding terminal device to perform the transmission mode conversion.
  • the base station when the transmission mode conversion needs to be performed, the base station may instruct the core network or terminal equipment to perform the transmission mode conversion, and carry the first multicast (group-cast Or multicast) information, so that the base station can determine whether to switch the transmission mode of the multicast service data according to specific scenarios.
  • first multicast group-cast Or multicast
  • the second message may also carry first multicast group information, indicating the multicast service that needs to be converted in transmission mode.
  • the second message may not carry the first multicast group information, which indicates that the multicast services that require transmission mode conversion are all current multicast services of the UE.
  • the first message and the second message may carry mode information, and the mode information is used to indicate the transmission mode of the multicast service data.
  • the core network or the terminal device can determine the transmission mode of the multicast service data corresponding to the first multicast group information after the conversion.
  • the transmission mode may include at least one of the following: a shared mode, a dedicated mode, a unicast mode, and a multicast mode.
  • the mode information may not be carried in the first message or the second message, and the transmission mode of the first message and the second message may be pre-appointed to indicate the conversion by default.
  • the transmission mode of the first message and the second message may be pre-appointed to indicate the conversion by default.
  • it can be converted to a shared mode by default, of course, it is not limited to this, and it can also be converted to a dedicated mode or other transmission mode by default.
  • the first multicast group information may include a multicast group identifier or a list of multicast group identifiers, which is used to indicate the multicast services that require transmission mode conversion.
  • a multicast group identifier or a list of multicast group identifiers, which is used to indicate the multicast services that require transmission mode conversion.
  • TMGI Temporary Mobile Group Identifier
  • the list of multicast group identifiers may include multiple multicast group identifiers. That is, there can be one or more multicast services that need to be converted in transmission mode.
  • the first user information may be a first user identification or a first user identification list, where the first user identification list may include multiple first user identifications for indicating the need The user who performs the transfer mode conversion.
  • the Global Unique Temporary User Terminal Identifier (GUTI) or GUTI list indicates that there may be one or more users that need to perform transmission mode conversion.
  • the method may further include: receiving a third message sent by the terminal device, where the third message carries the second user information and the second multicast group information, so The second multicast group information is used to indicate the multicast group that needs to perform transmission mode conversion. That is, in this possible implementation manner, the base station may instruct the core network or the terminal device to switch the transmission mode after receiving the third message sent by the terminal device.
  • the second multicast group information may include: a multicast group identifier or a list of multicast group identifiers. That is, the multicast service that the terminal device indicates that the transmission mode needs to be converted may include one or more.
  • the second user information may include: a second user identification, and the second user identification is used to indicate the terminal device that sends the third message.
  • the first user information includes at least the second user information, that is, the terminal device that the base station indicates that the transmission mode needs to be converted includes at least the terminal device that sends the third message, and may also include other terminal devices.
  • the first multicast group information may include at least second multicast group information, that is, the multicast service data indicated by the base station that transmission mode conversion is required includes at least the multicast service data indicated by the second multicast group information.
  • the first terminal device determines that it needs to switch the transmission mode of a certain multicast service data to the shared mode according to its own situation, and then sends a third message to the base station, which carries the first terminal device The user information and the multicast group information of the multicast service data that needs to be converted to the shared mode1.
  • the second terminal device under the same base station determines that it needs to switch the transmission mode of a certain multicast service data to the shared mode according to its own situation, and then sends a third message to the base station, which carries user information of the second terminal device And the multicast group information 2 of the multicast service data that needs to be converted to the shared mode.
  • the base station After receiving the third message sent by the first terminal device and the second terminal device, the base station sends a first message to the core network.
  • the first user information carried in the first message may include the user information of the first terminal device and User information of the second terminal device.
  • the first multicast group information carried in the first message may include multicast group information 1 and multicast group information 2. Of course, it is not limited to this.
  • the base station may also send a first message to the core network after receiving the third message sent by the first terminal device.
  • the first user information carried in the first message is user information of the first terminal device.
  • the first multicast group information is multicast group information 1. The details can be determined according to actual applications.
  • the method further includes: receiving a mode conversion request sent by the terminal device, wherein the mode conversion request carries the first multicast Group information; sending the fourth message to the core network, where the fourth message contains the mode conversion request and trigger indication, where the trigger indication is used to indicate that the mode conversion request is issued by the radio access network node trigger. That is, after the base station receives the mode conversion request sent by the terminal device, it can add a trigger indication on the basis of the mode conversion request, and then forward it to the core network.
  • the core network after receiving the mode switching request, determines that the mode switching request is triggered by the radio access network node (for example, the base station), which is a trusted trigger, thereby releasing the service of the base station to the corresponding The user plane of the multicast group identifier or the multicast group identifier list carried in the mode conversion request.
  • the radio access network node for example, the base station
  • the core network after receiving the mode switching request, determines that the mode switching request is triggered by the radio access network node (for example, the base station), which is a trusted trigger, thereby releasing the service of the base station to the corresponding The user plane of the multicast group identifier or the multicast group identifier list carried in the mode conversion request.
  • the base station may also determine whether to send the first message or the second message according to the current scenario.
  • the method may further include: determining that the number of target users exceeds or falls below a preset transmission mode switching trigger condition, where the target number of users is the number of receiving and the first group The total number of users of the multicast service corresponding to the broadcast group information; or, based on the resource status of the base station, it is determined that transmission mode conversion is required.
  • the current transmission module of one or some multicast services is in the shared mode
  • the base station determines that the current target user number of these multicast services is lower than the preset transmission mode switching trigger condition, and then sends the first message or the second message , Instructs to convert the transmission mode of these multicast services to a dedicated mode, and at the same time, the first message can carry user information currently using these multicast services.
  • the base station can switch the transmission mode of the multicast service data when the number of users receiving the multicast service changes or when the resource status of the base station changes, thereby ensuring resource utilization.
  • the method 200 may be executed by a network function node.
  • the method can be executed by software or hardware installed on a network function node.
  • a variety of core network network functions can be integrated on the network function node.
  • the method may include the following steps.
  • a first message carrying the first multicast group information and the first user information is received, or an operation using the first multicast group information and the first user information as parameters is invoked.
  • a variety of core network network functions are integrated in the network function node, including but not limited to: AMF (Access Control And Mobility Management Function, access and mobility management function), MB-SMF (multicast) Broadcast session management function Multicast Broadcast Session Management Function and MBSF (Multicast Broadcast Service Function).
  • AMF Access Control And Mobility Management Function, access and mobility management function
  • MB-SMF multicast
  • Multicast Broadcast Session Management Function Multicast Broadcast Session Management Function
  • MBSF Multicast Broadcast Service Function
  • the transmission mode switch can be determined by AMF or MBSF. If it is determined by the AMF, after receiving the first message of the first multicast information and the first user information sent by the base station, it is determined to perform the transmission mode conversion. When an operation call with the multicast information and the first user information as parameters, it is determined to perform the transmission mode conversion. For example, after receiving the first message, the AMF calls the MB-SMF multicast session update operation, such as calling the Nmbsmf_Session_Update operation, and the MB-SMF calls the MBSF mode switch notification operation, such as calling the Nmbsf_ModeSwitch_Notify operation.
  • the AMF calls the MB-SMF multicast session update operation, such as calling the Nmbsmf_Session_Update operation
  • the MB-SMF calls the MBSF mode switch notification operation, such as calling the Nmbsf_ModeSwitch_Notify operation.
  • the first message may be the first message sent by the base station to the core network in the method 100.
  • the first message may be the first message sent by the base station to the core network in the method 100.
  • the description in the method 100 please refer to the description in the method 100, which will not be repeated here.
  • the first multicast information as the calling parameter is the same as the first multicast group information carried in the first message.
  • the description in the method 100 please refer to the description in the method 100, which will not be repeated here.
  • the first user information as the calling parameter may be the same as or different from the first user information carried in the first message.
  • the AMD can find the original AMF serving the user through the user ID 1 and obtain the corresponding user ID 2 from the original AMF.
  • the user permanent identifier Subscribescription Permanent Identifier, SUPI
  • the AMF calls the MB-SMF multicast session update operation
  • the parameters used include a group ID or a list of group IDs, and can also include a user ID 2 or a user ID 2
  • the list, or including a user ID 1 or a user ID 1 list may also include the AMF ID.
  • AMF can execute a call for each multicast group ID.
  • MB-SMF performs a multicast session update operation, it calls MBSF's mode conversion notification operation, which carries one or more multicast group IDs, and can also carry one or more user IDs 1, or one or more user IDs 2, It can also carry the AMF logo.
  • the transmission mode conversion instruction is sent to the terminal device indicated by the first user identifier; or According to the first user ID, for example, 5G_GUTI, obtain a second user ID, for example, SUPI, and send the transmission mode conversion instruction to the terminal device indicated by the second user ID.
  • the transmission mode conversion instruction is sent to one or more terminal devices indicated by the first user identification list; or, according to the first user identification list.
  • the user identification list obtains a second user identification list, and sends the transmission mode conversion instruction to one or more terminal devices indicated by the second user identification list.
  • the transmission mode conversion instruction includes third multicast group information, and the third multicast group information is used to indicate a multicast group that performs transmission mode conversion.
  • the third multicast group information may be the same as or different from the first multicast group information. For example, it may be part of the multicast group information in the first multicast group information.
  • the third multicast group information may include: a multicast group identifier or a list of multicast group identifiers.
  • the transmission mode conversion instruction may further include mode information, and the mode information is used to indicate the transmission mode of the multicast service data.
  • the transmission mode includes one of the following: dedicated mode, shared mode, unicast mode, and multicast mode.
  • the method may further include: receiving a mode conversion request sent by the terminal device, wherein the mode conversion request carries the third multicast group information;
  • the third multicast group information and the trigger indication are used as the calling parameters, and the session update operation is called to release the connection corresponding to the third multicast group information.
  • the AMF sends a transmission mode switch instruction to the UE
  • the UE performs a transmission mode switch after receiving the transmission mode switch instruction, and then sends a mode switch request to the AF.
  • the request carries the third multicast group information
  • AMF After receiving the request, a trigger indication is added to the request, and the multicast session operation of MB-SMF is invoked.
  • MB-SMF determines that the mode switch request is credible, and then releases the service of the base station to the corresponding User plane of the third multicast group information.
  • the network function node of the core network receives the first message carrying the first multicast group information and the first user information, or uses the first multicast group information and the first message
  • a transmission mode conversion instruction is sent to the terminal device associated with the first user information, so that the transmission of the multicast service data of the terminal device associated with the first user information can be converted
  • the mode is not limited to only one transmission mode to transmit multicast service data.
  • FIG. 3 is a schematic flowchart of a transmission mode conversion method provided by an embodiment of the present invention, and the method 300 may be executed by a terminal device.
  • the method can be executed by software or hardware installed on the terminal device.
  • the method may include the following steps.
  • S310 Receive a transmission mode conversion instruction, and perform transmission mode conversion according to the transmission mode conversion instruction.
  • the transmission mode conversion instruction received by the terminal device in S310 is the same as the transmission mode conversion instruction sent by the network function node in the method 200, which may be specifically based on the description in the method 200.
  • the transmission mode switching instruction includes a multicast group identifier or a list of multicast group identifiers.
  • the multicast group identifier or the list of multicast group identifiers indicates the multicast service data that needs to be converted in transmission mode, that is, the transmission mode of the multicast group identifier or the list of multicast group identifiers indicating the multicast service data is converted and transmitted.
  • the transmission mode conversion instruction may further include mode information, and the mode information is used to indicate the transmission mode of the multicast service data.
  • the terminal device converts a multicast group identifier or a multicast group identifier list indicating the transmission mode of the multicast service data to the transmission mode indicated by the mode information.
  • the transmission mode may include one of the following: dedicated mode, shared mode, unicast mode, and multicast mode.
  • the method may further include: sending a third message to the network side, where the third message carries the second multicast group information. That is, the terminal device can trigger the network side to switch the transmission mode by sending the third message.
  • the second multicast group information includes: a multicast group identifier or a list of multicast group identifiers.
  • the second multicast group information includes a multicast group identifier or a list of multicast group identifiers, and the multicast group identifier or the list of multicast group identifiers may be the same as a multicast group identifier or a multicast group identifier included in the transmission mode conversion instruction.
  • the list of multicast group identifiers is the same or can be different.
  • the terminal device requests to switch the transmission mode of the multicast service data 1 corresponding to the multicast group ID 1, and the core network determines that the multicast group service that needs to be switched also includes the multicast group service 2 according to the network conditions, so the network side returns
  • the multicast group identifier in the transmission mode conversion instruction includes the multicast group identifier 1 and the multicast group identifier 2 corresponding to the multicast group service 2.
  • the terminal device can perform transmission mode conversion according to the received transmission mode conversion instruction, so that the transmission mode of the service data can be converted according to the instruction from the network side, and the transmission mode is flexible.
  • FIG. 4 is a schematic diagram of another flow chart of a transmission mode conversion method provided by an embodiment of the present invention.
  • the method 400 is implemented by a base station and a network function node of a core network.
  • the method can be executed by software or hardware installed on the network function nodes of the base station and the core network.
  • the method may include the following steps.
  • the base station determines that the number of users receiving a certain multicast group service or services exceeds a mode switch trigger condition (for example, a preset threshold), or decides to trigger the mode switch based on its own resource status, and converts certain multicast service(s)
  • the transmission mode is converted from the dedicated mode to the shared mode, and the access network message is sent to the AMF.
  • the access network message includes first multicast group information, the first multicast group information includes a multicast group identifier or a list of multicast group identifiers, such as TMGI, and the access network message may also include the first multicast group information.
  • a user identification information (including a user identification 1 or a user identification 1 list), such as 5G_GUTI.
  • the first multicast group information is used to indicate one or more multicast group services to be switched, and the first user identification information is used to indicate one or more terminal devices to be switched.
  • the base station may select a target AMF that supports the mode switching operation, for example, the target AMF may be selected according to the user ID 1.
  • the target AMF finds the original AMF serving the user through the first user identification information, and obtains corresponding second user identification information, such as SUPI, from the original AMF. Then the target AMF invokes the MB-SMF multicast session update operation, for example, invokes the Nmbsmf_Session_Update operation, and the carried parameters include the first multicast group information (including a multicast group identifier or a list of multicast group identifiers), and may also include the first multicast group identifier.
  • One user identification information including a user identification 1 or a user identification 1 list
  • second user identification information including a user identification 2 or a user identification 2 list
  • the AMF may also call an MB-SMF multicast session update operation for each multicast group identifier.
  • the MB-SMF invokes the mode conversion notification operation of the MBSF.
  • the Nmbsf_ModeSwitch_Notify operation is called to carry the parameters carried when the AMF calls MB-SMF, including: the first multicast group information (a multicast group ID or a list of multicast group IDs), and the first user ID information (a user One of the identification 1 or a user identification 1 list) and the second user identification information (a user identification 2 or a user identification 2 list) may also carry the identification of the target AMF.
  • the MBSF can obtain AMF information through the unified data management (UDM) function, and obtain the user ID 2 corresponding to the user ID 1 through the AMF.
  • UDM unified data management
  • MBSF can also obtain the user ID 2 of all members of the multicast group by calling the multicast group ID carried in the mode conversion notification operation.
  • MBSF calls the AMF message transmission service operation for the user ID 1 or user ID 2 one by one, and carries the mode conversion notification.
  • mode conversion notification For example, call Namf_Communication_N1N2MessageTransfer operation.
  • the mode switch notification may be a NAS Mode Switch message.
  • the mode conversion notification may carry second multicast group information and mode information, where the second multicast group information includes a multicast group identifier or a list of multicast group identifiers (that is, the multicast group identifier parameters input by AMF),
  • the mode information is used to indicate the conversion to a dedicated mode, a shared mode, a unicast mode, or a multicast mode. If it is not carried, it may default to indicate a dedicated mode, a shared mode, a unicast mode, or a multicast mode, which is specifically determined according to a predetermined agreement.
  • the transmission mode indicated by the mode information carried in the mode switch notification is the shared mode, that is, the terminal device corresponding to each user ID 1 or user ID 2 is indicated, and a multicast group ID or a multicast group ID carried in the mode switch notification is indicated.
  • the transmission mode of the multicast service indicated by the multicast group identification list is converted from the dedicated mode to the shared mode.
  • S418 The AMF forwards the mode switch notification to the corresponding UE.
  • FIG. 5 is a schematic diagram of another flow of a transmission mode conversion method provided by an embodiment of the present invention.
  • the method 500 is implemented by a terminal device, a base station, and a network function node of a core network.
  • the method can be executed by software or hardware installed on terminal equipment, base stations, and network function nodes of the core network.
  • the method may include the following steps.
  • the terminal device reports a wireless message to the base station.
  • the wireless message contains the first multicast group information.
  • the first multicast group information may include a multicast identifier or a list of multicast identifiers, such as a TMGI or a TMGI list.
  • the wireless message may also include first user identification information, and the first user identification information may include a user identification 1 or a list of user identification 1, such as 5G_GUTI.
  • the base station sends an access network message to the target AMF, where the access network message includes the first multicast group information and may also include the first user identification information.
  • the base station can select a target AMF that supports the mode switching operation. If the wireless message accessed includes a user ID 1, the target AMF can be selected according to the user ID 1.
  • the target AMF calls the MBSF mode switch notification operation, which carries at least the first multicast group identifier, for example, calls the Nmbsf_ModeSwitch_Notify operation.
  • the mode conversion notification operation of calling MBSF by the AMF may also carry the first user identification information or the second user identification information.
  • the target AMF can find the original AMF serving the user through the user ID 1, and obtain the corresponding user ID 2 (ie, the second user ID information) from the original AMF, that is, call the mode switch notification
  • the operation can carry a user ID 2 or a user ID 2 list, or can also carry a user ID 1 or a user ID 1 list.
  • the mode switch notification operation can also be called to carry the identification of the target AMF.
  • the target AMF may call the MBSF mode conversion notification operation once for each multicast group identifier.
  • the MBSF can obtain AMF information through UDM, and obtain user ID 2 corresponding to user ID 1 through AMF.
  • MBSF can also obtain all member user IDs 2 of the multicast group through the multicast group ID, and MBSF calls the message transmission service operation of the target AMF for each user ID 1 or user ID 2.
  • the Namf_Communication_N1N2MessageTransfer operation is called to carry a mode conversion notification
  • the mode conversion notification is, for example, a NAS Mode Switch message.
  • the mode conversion notification may carry second multicast group information and mode information, where the second multicast group information includes a multicast group identifier or a list of multicast group identifiers (that is, the multicast group identifier parameters input by AMF),
  • the mode information is used to indicate the conversion to a dedicated mode, a shared mode, a unicast mode, or a multicast mode. If it is not carried, it can be defaulted to indicate a dedicated mode, a shared mode, a unicast mode, or a multicast mode, which is specifically determined according to a predetermined agreement.
  • S518 The AMF forwards the mode switch notification to the corresponding UE.
  • FIG. 6 is a schematic flowchart of another transmission mode conversion method provided by an embodiment of the present invention.
  • the method 600 is implemented by a terminal device, a base station, and a network function node of a core network.
  • the method can be executed by software or hardware installed on terminal equipment, base stations, and network function nodes of the core network.
  • the method may include the following steps.
  • S610 The terminal device reports a wireless message to the base station.
  • This step is the same as S510 in method 500.
  • S510 This step is the same as S510 in method 500.
  • S510 For details, please refer to the description of S510.
  • the base station judges that the number of users receiving a certain service or groups of services exceeds or falls below the mode switch trigger condition, or decides to trigger the mode switch based on its own resource status, and sends an access network message to the target AMF.
  • the access network message carries second multicast group information and second user identification information
  • the second multicast group information includes a multicast group identification or a list of multicast group identifications, such as TMGI, second user identification
  • the information may include a user ID 1 or a list of user ID 1, such as 5G_GUTI.
  • the base station can select a target AMF that supports the mode switching operation. For example, the target AMF can be selected according to the user ID 1.
  • the second multicast group information may be the same as or different from the first multicast group information in the wireless message reported by the terminal device.
  • the second multicast group information may include the first multicast group information.
  • the second user identification information may be the same as or different from the first user identification information carried in the wireless message.
  • the second user identification information may include the first user identification information.
  • S614 The target AMF notifies the UEs indicated by the second user identification information to perform mode conversion one by one.
  • the target AMF can find the original AMF serving the user through the second user identification information, and obtain the corresponding third user identification information from the original AMF, such as SUPI, and also obtain its user context.
  • the AMF informs the user identification 1 or one by one.
  • the UE corresponding to user ID 2 performs mode conversion, such as sending a NAS Mode Switch message, which can carry third multicast group information and mode information, and the third multicast group information can include a multicast group identifier or a multicast group
  • the identification list may be the same as or different from the second multicast group information.
  • the list of multicast group identifiers included in the second multicast group information may contain multiple multicast group identifiers, but the currently notified UE only involves one or more of the multicast group services. Therefore, the target AMF can only notify the The UE performs mode conversion on the one or more multicast group services.
  • the mode information is the same as in the foregoing embodiments, and will not be repeated here.
  • the terminal device may also send a mode switching request to the target AMF.
  • the AMF invokes the MB-SMF to perform the multicast session update operation.
  • FIG. 7 is a schematic diagram of another flow of a transmission mode conversion method provided by an embodiment of the present invention.
  • the method 700 is implemented by a terminal device, a base station, and a network function node of a core network.
  • the method can be executed by software or hardware installed on terminal equipment, base stations, and network function nodes of the core network. As shown in Figure 7, the method may include the following steps.
  • the terminal device sends a wireless message to the base station and reports information, which includes the first multicast group information and the user ID 1, such as C-RNTI (Cell Temporary User ID).
  • C-RNTI Cell Temporary User ID
  • the base station determines that the number of users receiving a certain or certain multicast group services exceeds or falls below the mode switch trigger condition, or decides to trigger the mode switch based on its own resource status, and sends a mode switch notification to the UE corresponding to the notification user ID 1 to notify The UE performs mode switching. For example, sending an RRC Mode Switch message carries a second multicast group information and mode information.
  • the second multicast group information may be the same as or different from the first multicast group information in the wireless message sent by the terminal device, that is, the multicast service that the base station determines to perform mode conversion may be the same as the multicast service reported by the terminal device , Can also be different.
  • the second multicast group information may include the first multicast group information.
  • Mode information can indicate conversion to dedicated mode, shared mode, unicast mode, or multicast mode, without mode information, it can default to indicate dedicated mode, shared mode, unicast mode, or multicast mode, which can be determined according to a predetermined agreement .
  • the UE performs a mode conversion operation after receiving the mode conversion notification, and sends a mode conversion request to the base station, such as sending a Multicast Session Update request, which carries a multicast group identifier or a list of multicast group identifiers, and may also carry mode information.
  • S716 The base station forwards the mode switch request to the target AMF, and adds a RAN (Radio Access Network Node) trigger indication to the forwarded mode switch request to indicate that the request is triggered by the RAN.
  • RAN Radio Access Network Node
  • the target AMF calls the MB-SMF mode conversion notification, and the call parameter includes a multicast group identifier or a list of multicast group identifiers (which may be the same as in the received mode conversion request), and may also include the mode information,
  • the trigger indication may also be included.
  • MB-SMF releases the user plane of the base station serving the corresponding multicast group ID or multicast group ID list according to the trigger indication and the multicast group ID or multicast group ID list, for example, consecutively receiving multiple trigger indications carrying After the notification, the release operation is executed when the notification is not received after waiting for a period of time.
  • FIG. 8 is a schematic structural diagram of an access network device according to an embodiment of the present invention.
  • the access network device 800 includes a sending module 810, which is used to send a first message to a core network or to a terminal The device sends a second message indicating that transmission mode conversion is required, where the first message carries first user information and first multicast group information.
  • the second message carries first multicast group information.
  • the first message carries mode information
  • the second message carries mode information, where the mode information is used to indicate the transmission mode of the multicast service data.
  • the transmission mode indicated by the mode information includes one of the following: dedicated mode, shared mode, unicast mode, and multicast mode.
  • the first multicast group information includes: a multicast group identifier or a list of multicast group identifiers.
  • the first user information includes: a first user ID or a list of first user IDs.
  • a first receiving module configured to receive a third message sent by the terminal device before sending the first message or the second message, where the third message
  • the message carries second user information and second multicast group information, and the second multicast group information is used to indicate the multicast group that needs to perform transmission mode conversion.
  • the second multicast group information includes: a multicast group identifier or a list of multicast group identifiers, and/or, the second user information includes: a second user identifier.
  • it further includes: a second receiving module, configured to receive a mode conversion request sent by the terminal device after the second message is sent to the terminal device, wherein the mode conversion request carries something The first multicast group information; a forwarding module, configured to send the fourth message to the core network, where the fourth message includes the mode switch request and trigger indication, where the trigger indication is used for The indication mode switch request is triggered by the wireless access network node.
  • a decision-making module configured to determine that the number of target users exceeds or falls below a preset transmission mode switching trigger condition before sending the first message or the second message, wherein: The target number of users is the total number of users who receive the multicast service corresponding to the first multicast group information; or, based on the resource status of the access network device, it is determined that a transmission mode conversion is required.
  • the access network device provided by the embodiment of the present invention can implement each process implemented by the base station in the method embodiments of FIG. 1 to FIG. 7 and achieve the same effect. To avoid repetition, details are not described herein again.
  • Fig. 9 is a schematic structural diagram of a core network device provided by an embodiment of the present invention.
  • the core network device 900 includes: a trigger module 910, configured to carry first multicast group information and first When a first message of user information or an operation with first multicast group information and first user information as parameters is invoked, the sending module 920 is triggered; the sending module 920 is configured to send messages associated with the first user information The terminal device sends a transmission mode conversion instruction.
  • the first multicast information includes: a multicast group identifier or a list of multicast group identifiers.
  • the first user information includes: a first user ID or a list of first user IDs; sending a transmission mode conversion instruction to a terminal device associated with the first user information includes: Sending the transmission mode conversion instruction to the terminal device indicated by the first user identification, or sending the transmission mode conversion instruction to one or more terminal devices indicated by the first user identification list.
  • the first user information includes: a first user ID or a list of first user IDs; sending a transmission mode conversion instruction to a terminal device associated with the first user information includes: Acquire a second user ID according to the first user ID, and send the transmission mode conversion instruction to the terminal device indicated by the second user ID; or, obtain the second user ID according to the first user ID list List to send the transmission mode conversion instruction to one or more terminal devices indicated by the second user identification list.
  • the transmission mode conversion instruction includes third multicast group information, and the third multicast group information is used to indicate a multicast group that performs transmission mode conversion.
  • the third multicast group information includes: a multicast group identifier or a list of multicast group identifiers.
  • the transmission mode conversion instruction includes: mode information, and the mode information is used to indicate a transmission mode of the multicast service data.
  • the transmission mode includes one of the following: dedicated mode, shared mode, unicast mode, and multicast mode.
  • it may further include: a receiving module, configured to receive a mode conversion request sent by the terminal device after sending a transmission mode conversion instruction to the terminal device associated with the first user information, where , The mode conversion request carries the third multicast group information; the invocation module is configured to use the third multicast group information and the trigger indication as the invocation parameters, invoke the session update operation, and release the third multicast group information.
  • the connection corresponding to the multicast group information may further include: a receiving module, configured to receive a mode conversion request sent by the terminal device after sending a transmission mode conversion instruction to the terminal device associated with the first user information, where , The mode conversion request carries the third multicast group information; the invocation module is configured to use the third multicast group information and the trigger indication as the invocation parameters, invoke the session update operation, and release the third multicast group information.
  • the connection corresponding to the multicast group information is not limited to the multicast group information.
  • the network device provided by the embodiment of the present invention can implement each process implemented by each network function node in each method embodiment in FIG. 1 to FIG. 7, and achieve the same effect. To avoid repetition, details are not described herein again.
  • FIG. 10 is a schematic structural diagram of a terminal device provided by an embodiment of the present invention.
  • the terminal device 1000 includes: a receiving module 1010, configured to receive a transmission mode conversion instruction, and perform processing according to the transmission mode conversion instruction Transfer mode conversion.
  • it further includes: a first sending module, configured to send a third message to the network side before receiving the transmission mode switching instruction, where the third message carries the second multicast group information .
  • the second multicast group information includes: a multicast group identifier or a list of multicast group identifiers.
  • the transmission mode switching instruction includes a multicast group identifier or a list of multicast group identifiers.
  • the transmission mode conversion instruction includes: mode information, and the mode information is used to indicate a transmission mode of the multicast service data.
  • the transmission mode includes one of the following: dedicated mode, shared mode, unicast mode, and multicast mode.
  • it further includes: a second sending module, configured to send a mode conversion request after the transmission mode conversion, wherein the mode conversion request carries the transmission mode conversion instruction.
  • the network device provided by the embodiment of the present invention can implement each process implemented by each terminal device in each method embodiment in FIG. 1 to FIG. 7 and achieve the same effect. To avoid repetition, details are not described herein again.
  • Fig. 11 is a block diagram of a terminal device according to another embodiment of the present invention.
  • the terminal device 1100 shown in FIG. 11 includes: at least one processor 1101, a memory 1102, at least one network interface 1104, and a user interface 1103.
  • the various components in the terminal device 1100 are coupled together through the bus system 1105.
  • the bus system 1105 is used to implement connection and communication between these components.
  • the bus system 1105 also includes a power bus, a control bus, and a status signal bus.
  • various buses are marked as the bus system 1105 in FIG. 11.
  • the user interface 1103 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.).
  • a pointing device for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.
  • the memory 1102 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • Synchronous DRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM Enhanced SDRAM, ESDRAM
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory (Synch Link DRAM, SLDRAM)
  • DRRAM Direct Rambus RAM
  • the memory 1102 of the system and method described in the embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 1102 stores the following elements, executable modules or data structures, or a subset of them, or an extended set of them: operating system 11021 and application 11022.
  • the operating system 11021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks.
  • the application program 11022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services.
  • the program for implementing the method of the embodiment of the present invention may be included in the application program 11022.
  • the terminal device 1100 further includes: a computer program stored in the memory 1102 and capable of running on the processor 1101.
  • the computer program is executed by the processor 1101, the following steps are implemented: receiving a transmission mode conversion instruction, and according to all According to the transmission mode conversion instruction, the transmission mode conversion is performed.
  • the method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1101 or implemented by the processor 1101.
  • the processor 1101 may be an integrated circuit chip with signal processing capabilities.
  • the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 1101 or instructions in the form of software.
  • the above-mentioned processor 1101 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • Programmable logic devices discrete gates or transistor logic devices, discrete hardware components.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present invention may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature computer readable storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the computer-readable storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102, and completes the steps of the foregoing method in combination with its hardware.
  • a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 1101, each step in the above method 300 is implemented.
  • the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and others for performing the functions described in the present invention Electronic unit or its combination.
  • ASIC application specific integrated circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing equipment
  • PLD programmable Logic Device
  • PLD Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the technology described in the embodiments of the present invention can be implemented by modules (for example, procedures, functions, etc.) that execute the functions described in the embodiments of the present invention.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the terminal device 1100 can implement the various processes implemented by the terminal device in FIG. 1 to FIG. 7. To avoid repetition, details are not described herein again.
  • FIG. 12 is a structural diagram of a network device applied in an embodiment of the present invention, which can be used as a base station or a network function node to implement the details in the methods 100 and 200, and achieve the same effect.
  • the network device 1200 includes: a processor 1201, a transceiver 1202, a memory 1203, a user interface 1204, and a bus interface, where:
  • the network device 1200 further includes: a computer program stored in the memory 1203 and capable of running on the processor 1201.
  • the computer program is executed by the processor 1201, the following steps are implemented: sending the first message to the core network, Or send a second message to the terminal device to indicate that transmission mode conversion is required, where the first message carries the first user information and the first multicast group information.
  • the first message carrying the first multicast group information and the first user information is received, or the operation with the first multicast group information and the first user information as parameters is invoked;
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1201 and various circuits of the memory represented by the memory 1203 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the transceiver 1202 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.
  • the user interface 1204 may also be an interface capable of externally connecting internally required equipment, and the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1203 can store data used by the processor 1201 when performing operations.
  • the network device 1200 can implement the various processes implemented by the network side or the network device in FIG. 1 to FIG. 5, and achieve the same effect. To avoid repetition, details are not described herein again.
  • the embodiment of the present invention also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer program is executed by a processor, the base station, The network function node or terminal device executes each process, and can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.
  • the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk, or optical disk, etc.
  • the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present invention.
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

本发明公开了一种传输模式转换指示方法、接入网设备和终端设备。其中，一种传输模式转换指示方法，应用于基站，所述方法包括：向核心网发送第一消息，或向终端设备发送第二消息，指示需要进行传输模式转换，其中，所述第一消息中携带有第一用户信息和第一组播组信息。

Description

传输模式转换指示方法、接入网设备及终端设备
交叉引用
本发明要求在2020年03月24日提交中国专利局、申请号为2020010208861.4、发明名称为“传输模式转换指示方法、接入网设备及终端设备”的中国专利申请的优先权，该申请的全部内容通过引用结合在本发明中。
技术领域
本发明涉及通信领域，尤其涉及一种传输模式转换指示方法、接入网设备及终端设备。
背景技术
网络侧在为终端设备提供内容服务时，可以通过点对点的传输模式，将数据发送给对点的终端设备。例如，专用模式，即核心网和基站使用每个用户专有的传输通道传输业务数据。
或者，为了有效地利用移动网络资源，实现网络(包括核心网和接入网)资源共享，以尽可能少的资源实现对尽可能多的、具有相同需求的用户的服务，也可以采用一对多的传输模式。例如，共享模式，即核心网和基站使用多个用户共享的传输通道传输业务数据。
应用服务器在为终端设备提供内容服务时，可以通过点对点的传输模式，将数据发送给对点的终端设备。例如，单播模式，即应用服务器使用不同终端的IP地址为目标分别发送数据。
或者，为了有效地利用移动网络资源，实现网络(包括核心网和接 入网)资源共享，以尽可能少的资源实现对尽可能多的、具有相同需求的用户的服务，也可以采用一对多的传输模式。例如，多播模式，即应用服务器使用多播IP地址为目标发送一份数据，由网络分发给相应多播组的成员。
在相关技术中，网络侧在为终端设备提供内容服务时，一种方式是采用专用模式传输，另一种方式是采用共享模式传输。而应用服务器在为终端设备提供内容服务时，一种方式是采用单播模式传输，另一种方式是采用多播模式传输。但相关技术中并没有提供一种网络侧触发的在四种传输模式之间进行转换的方案，因此，无法保证资源的合理利用。
发明内容
本发明实施例的目的是提供一种传输模式转换指示方法、接入网设备、核心网设备和终端设备，以使得网络侧能够触发传输模式转换，提高资源的利用率。
第一方面，提供了一种传输模式转换指示方法，应用于基站，所述方法包括：向核心网发送第一消息，或向终端设备发送第二消息，指示需要进行传输模式转换，其中，所述第一消息中携带有第一用户信息和第一组播组信息。
第二方面，提供了一种传输模式转换指示方法，应用于网络功能节点，所述方法包括：接收到携带第一组播组信息和第一用户信息的第一消息，或者以第一组播组信息和第一用户信息为参数的操作被调用；向与所述第一用户信息相关联的终端设备发送传输模式转换指示。
第三方面，提供一种传输模式转换方法，应用于终端设备，所述方 法包括：接收传输模式转换指示，根据所述传输模式转换指示，进行传输模式转换。
第四方面，提供了一种接入网设备，包括：发送模块，用于向核心网发送第一消息，或向终端设备发送第二消息，指示需要进行传输模式转换，其中，所述第一消息中携带有第一用户信息和第一组播组信息。
第五方面，提供了一种核心网设备，包括：触发模块，用于在接收到携带第一组播组信息和第一用户信息的第一消息，或者以第一组播组信息和第一用户信息为参数的操作被调用时，触发发送模块；所述发送模块，用于向与所述第一用户信息相关联的终端设备发送传输模式转换指示。
第六方面，提供一种终端设备，包括：接收模块，用于接收传输模式转换指示，根据所述传输模式转换指示，进行传输模式转换。
第七方面，提供一种接入网设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如第一方面所述的方法的步骤。
第八方面，提供一种核心网设备，存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如第二方面所述的方法的步骤。
第九方面，提供一种终端设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如第三方面所述的方法的步骤。
第十方面，提供了一种计算机可读存储介质，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现如第一方 面或第二方面或第三方面所述的方法的步骤。
在本发明实施例中，基站可以向核心网或终端设备发送消息，指示需要进行传输模式转换，并将需要转换模式的组播业务的组播信息发送给核心网或终端设备。从而使得核心网或终端设备在接收到该消息之后，可以进行传输模式的转换，以提高资源的利用率。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本发明的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是本发明实施例提供的传输模式转换指示方法的一种流程示意图；
图2是本发明实施例提供的传输模式转换指示方法的另一种流程示意图；
图3是本发明实施例提供的传输模式转换方法的一种流程示意图；
图4是本发明实施例提供的传输模式转换方法的另一种流程示意图；
图5是本发明实施例提供的传输模式转换方法的又一种流程示意图；
图6是本发明实施例提供的传输模式转换方法的又一种流程示意图；
图7是本发明实施例提供的传输模式转换方法的又一种流程示意图；
图8是本发明实施例提供的一种接入网设备的结构示意图；
图9是本发明实施例提供的一种核心网设备的结构示意图；
图10是本发明实施例提供的一种终端设备的结构示意图；
图11是本发明实施例提供的一种终端设备的结构示意图；
图12是本发明实施例提供的一种网络设备的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的技术方案，可以应用于各种通信系统，例如：全球移动通讯系统(GSM，Global System of Mobile communication)，码分多址(CDMA，Code Division Multiple Access)系统，宽带码分多址(WCDMA，Wideband Code Division Multiple Access)，通用分组无线业务(GPRS，General Packet Radio Service)，长期演进(LTE，Long Term Evolution)/增强长期演进(LTE-A，Long Term Evolution Advanced)，NR(New Radio)等。
用户设备(UE，User Equipment)，也可称之为终端设备、移动终端(Mobile Terminal)、移动用户设备等，可以经无线接入网(例如，RAN，Radio Access Network)与一个或多个核心网进行通信，用户设备可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。
基站，可以是GSM或CDMA中的基站(BTS，Base Transceiver Station)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演 进型基站(eNB或e-NodeB，evolutional Node B)及5G基站(gNB)，本发明并不限定，但为描述方便，下述实施例以gNB为例进行说明。
以下结合附图，详细说明本发明各实施例提供的技术方案。
图1为本发明实施例中提供的传输模式转换指示方法的一种流程示意图，该方法100可以由基站执行。换言之，所述方法可以由安装在基站上的软件或硬件来执行。如图1所示，该方法可以包括以下步骤。
S110，向核心网发送第一消息，或向终端设备发送第二消息，指示需要进行传输模式转换，其中，所述第一消息中携带有第一用户信息和第一组播组信息。
在本发明实施例中，向核心网发送的第一消息中携带的第一用户信息用于指示需要进行传输模式转换的终端设备，核心网在接收到第一消息后，可以根据第一用户信息，向与第一用户信息相关的终端设备发送传输模式转换指示，指示对应的终端设备进行传输模式转换。
在本发明实施例中，在需要进行传输模式转换时，基站可以指示核心网或终端设备需要进行传输模式转换，并携带指示需要进行传输模式转换的组播业务的第一组播(group-cast或multicast)信息，从而使得基站可以根据具体场景情况确定是否转换组播业务数据的传输模式。
在一个可能的实现方式中，所述第二消息也可以携带有第一组播组信息，指示需要进行传输模式转换的组播业务。当然，第二消息中也可以不携带第一组播组信息，则指示需要进行传输模式转换的组播业务为UE当前的所有组播业务。
在一个可能的实现方式中，第一消息和第二消息中可以携带模式信息，该模式信息用于指示组播业务数据的传输模式。通过该模式信息， 核心网或终端设备可以确定转换后，第一组播组信息对应的组播业务数据的传输模式。
可选地，传输模式可以包括以下至少一项：共享模式、专用模式、单播模式和多播模式。
在实际应用中，第一消息或第二消息中也可以不携带该模式信息，则可以预先约定第一消息和第二消息默认指示转换的传输模式。例如，可以默认为转换为共享模式，当然，也不限于此，也可以默认为转换为专用模式或其它传输模式。
在一个可能的实现方式中，第一组播组信息可以包括一个组播组标识或者一个组播组标识列表，用于指示需要进行传输模式转换的组播业务。例如，临时移动组标识符(TMGI)或TMGI列表。其中，组播组标识列表中可以包括多个组播组标识。即需要进行传输模式转换的组播业务可以为一个，也可以为多个。
在一个可能的实现方式中，第一用户信息可以为一个第一用户标识也可以为一个第一用户标识列表，其中，第一用户标识列表中可以包括多个第一用户标识，用于指示需要进行传输模式转换的用户。例如，全球唯一临时用户终端标识(GUTI)或GUTI列表，即指示需要进行传输模式转换的用户可以为一个，也可以为多个。
在一个可能的实现方式中，在S110之前，该方法还可以包括：接收终端设备发送的第三消息，其中，所述第三消息中携带有第二用户信息和第二组播组信息，所述第二组播组信息用于指示所述需要进行传输模式转换的组播组。即在该可能的实现方式中，基站可以是在接收到终端设备发送的第三消息之后，指示核心网或终端设备需要进行传输模式 的转换。
在上述可能的实现方式中，所述第二组播组信息可以包括：一个组播组标识或一个组播组标识列表。即终端设备指示需要进行传输模式转换的组播业务可以包括一个或多个。
在上述可能的实现方式中，所述第二用户信息可以包括：一个第二用户标识，该第二用户标识用于指示发送第三消息的终端设备。
在具体应用中，第一用户信息至少包括第二用户信息，即基站指示需要进行传输模式转换的终端设备至少包括发送第三消息的终端设备，还可以包括其它的终端设备。
同样，第一组播组信息可以至少包括第二组播组信息，即基站指示需要进行传输模式转换的组播业务数据至少包括所述第二组播组信息指示的组播业务数据。
例如，在具体应用中，第一终端设备根据自身的情况，确定需要将某个组播业务数据的传输模式转换到共享模式，则向基站发送第三消息，该消息中携带有第一终端设备的用户信息和需要转换到共享模式的组播业务数据的组播组信息1。同一基站下的第二终端设备根据自身的情况，确定需要将某个组播业务数据的传输模式转换到共享模式，则向基站发送第三消息，该消息中携带有第二终端设备的用户信息和需要转换到共享模式的组播业务数据的组播组信息2。基站在接收到第一终端设备和第二终端设备发送的第三消息后，向核心网发送第一消息，该第一消息中携带的第一用户信息中可以包括第一终端设备的用户信息和第二终端设备的用户信息，该第一消息中携带的第一组播组信息中可以包括组播组信息1和组播组信息2。当然，并不限于此，基站也可以在接 收第一终端设备发送的第三消息后，向核心网发送第一消息，该第一消息中携带的第一用户信息为第一终端设备的用户信息，第一组播组信息为组播组信息1。具体可以根据实际应用确定。
在一个可能的实现方式中，向终端设备发送第二消息之后，所述方法还包括：接收所述终端设备发送的模式转换请求，其中，所述模式转换请求中携带有所述第一组播组信息；向所述核心网发送所述第四消息，其中，所述第四消息包含所述模式转换请求和触发指示，其中，所述触发指示用于指示模式转换请求由无线接入网络节点触发。即基站在接收到终端设备发送的模式转换请求后，可以在模式转换请求的基础上增加一个触发指示，再转发给核心网。通过该可选的实施方式，使得核心网在接收模式转换请求后，确定模式转换请求是由无线接入网络节点(例如，基站)触发的，为可以信任的触发，从而释放基站的服务于相应于模式转换请求中携带的组播组标识或组播组标识列表的用户面。
在一个可能的实现方式中，基站还可以根据当前的场景确定是否发送所述第一消息或所述第二消息。在该可能的实现方式中，在S110之前，该方法还可以包括：确定目标用户数超过或低于预设的传输模式转换触发条件，其中，所述目标用户数为接收与所述第一组播组信息对应的组播业务的用户总数；或者，基于所述基站的资源状况确定需要进行传输模式转换。例如，某个或某些组播业务当前的传输模块为共享模式，而基站确定这些组播业务当前的目标用户数低于预设的传输模式转换触发条件，则发送第一消息或第二消息，指示将这些组播业务的传输模式转换为专用模式，同时可以在第一消息中携带当前使用这些组播业务的用户信息。通过该可能的实现方式，基站可以在接收组播业务的用户 数发生变化时或者基站的资源状态发生变化时，转换组播业务数据的传输模式，从而可以保证资源的利用率。
图2为本发明实施例提供的一种传输模式转换方法的另一种流程示意图，该方法200可以由网络功能节点执行。换言之，所述方法可以由安装在网络功能节点上的软件或硬件来执行。在实际应用中，网络功能节点上可以集成多种核心网的网络功能。如图2所示，该方法可以包括以下步骤。
S210，接收到携带第一组播组信息和第一用户信息的第一消息，或者以第一组播组信息和第一用户信息为参数的操作被调用。
在本发明实施例中，网络功能节点中集成了多种核心网的网络功能，包括但不限于：AMF(Access Control And Mobility Management Function，接入和移动性管理功能)、MB-SMF(多播广播会话管理功能Multicast Broadcast Session Management Function)以及MBSF(Multicast Broadcast Service Function，多播广播业务功能)。
而在本发明实施例中，传输模式转换可以由AMF确定，也可以由MBSF确定。如果是由AMF确定，则在接收到基站发送携带的第一组播信息和第一用户信息的第一消息后，确定进行传输模式转换，如果是由MBSF确定，则是在MBSF在被以第一组播信息和第一用户信息为参数的操作调用时，确定进行传输模式转换。例如，AMF在接收到第一消息后，调用MB-SMF的多播会话更新操作，比如调用Nmbsmf_Session_Update操作，MB-SMF调用MBSF的模式转换通知操作，比如调用Nmbsf_ModeSwitch_Notify操作。
在方法200中，第一消息可以为方法100中基站向核心网发送的第 一消息，具体可以参见方法100中的描述，在此不再赘述。
在方法200中，作为调用参数的第一组播信息与第一消息中携带的第一组播组信息相同，具体可以参见方法100中的描述，在此不再赘述。
在方法200中，作为调用参数的第一用户信息，可以与第一消息中携带的第一用户信息相同，也可能不相同。例如，AMD在接收到携带用户标识1(例如，5G_GUTI)的第一消息后，可以通过用户标识1找到服务该用户的原AMF，并从原AMF处获得对应的用户标识2。比如用户永久识别符号(Subscription Permanent Identifier，SUPI)，AMF调用MB-SMF的多播会话更新操作，使用的参数包括一个组标识或一个组标识列表，还可以包括一个用户标识2或一个用户标识2列表，或包括一个用户标识1或一个用户标识1列表，还可以包括此AMF的标识。如果有多个组播组标识，AMF可以分别为每个组播组标识执行一次调用。MB-SMF在执行多播会话更新操作时，调用MBSF的模式转换通知操作，携带一个或多个组播组标识，还可携带一个或多个用户标识1，或一个或多个用户标识2，还可携带AMF的标识。
S212，向与所述第一用户信息相关联的终端设备发送传输模式转换指示。
在一个可能的实现方式中，如果第一用户信息包括一个第一用户标识，例如，5G_GUTI，则在S212中，向与该第一用户标识所指示的终端设备发送所述传输模式转换指示；或者，根据所述第一用户标识，例如，5G_GUTI，获取第二用户标识，例如，SUPI，向所述第二用户标识所指示的终端设备发送所述传输模式转换指示。如果第一用户信息包括一个第一用户标识列表，则在S212中，向所述第一用户标识列表所指 示的一个或多个终端设备发送所述传输模式转换指示；或者，根据所述第一用户标识列表，获取第二用户标识列表，向所述第二用户标识列表所指示的一个或多个终端设备发送所述传输模式转换指示。
在一个可能的实现方式中，所述传输模式转换指示包括第三组播组信息，所述第三播组信息用于指示进行传输模式转换的组播组。在具体应用中，第三组播组信息可以与第一组播组信息相同，也可能不同，例如，可以为第一组播组信息中的部分组播组信息。
在上述可能的实现方式中，所述第三组播组信息可以包括：一个组播组标识或一个组播组标识列表。
在一个可能的实现方式中，所述传输模式转换指示还可以包括模式信息，该模式信息用于指示组播业务数据的传输模式。可选地，所述传输模式包括以下一项：专用模式、共享模式、单播模式和多播模式。
在一个可能的实现方式中，在S212之后，该方法还可以包括：接收所述终端设备发送的模式转换请求，其中，所述模式转换请求中携带有所述第三组播组信息；使用所述第三组播组信息和触发指示作为调用参数，调用会话更新操作，释放与所述第三组播组信息对应的连接。例如，在AMF向UE发送传输模式转换指示后，UE在接收到该传输模式转换指示后，进行传输模式转换，然后向AF发送模式转换请求，该请求中携带有第三组播组信息，AMF在接收到该请求后，在该请求中增加触发指示，调用MB-SMF的多播会话操作，MB-SMF根据该触发指示，确定该模式转换请求是可信的，则释放基站的服务于相应第三组播组信息的用户面。
通过本发明实施例提供的上述传输模式转换指示方法，核心网的网 络功能节点在接收到携带第一组播组信息和第一用户信息的第一消息，或者以第一组播组信息和第一用户信息为参数的操作被调用时，向与所述第一用户信息相关联的终端设备发送传输模式转换指示，从而可以转换与第一用户信息相关联的终端设备的组播业务数据的传输模式，而不限于仅与一种传输模式传输组播业务数据。
图3是本发明实施例提供的传输模式转换方法的一种流程示意图，该方法300可以由终端设备执行。换言之，所述方法可以由安装在终端设备上的软件或硬件来执行。如图3所示，该方法可以包括以下步骤。
S310，接收传输模式转换指示，根据所述传输模式转换指示，进行传输模式转换。
其中，S310中终端设备接收到的传输模式转换指示与方法200中网络功能节点发送的传输模式转换指示相同，具体可以根据方法200中的描述。
在一个可能的实现方式中，传输模式转换指示包括一个组播组标识或一个组播组标识列表。该组播组标识或组播组标识列表指示需要进行传输模式转换的组播业务数据，即转换传输该组播组标识或组播组标识列表指示组播业务数据的传输模式。
在一个可能的实现方式中，传输模式转换指示中还可以包括模式信息，该模式信息用于指示组播业务数据的传输模式。终端设备在接收到传输模式转换指示之后，将一个组播组标识或一个组播组标识列表指示组播业务数据的传输模式转换为模式信息所指示的传输模式。
如方法100和方法200中所述，传输模式可以包括以下一项：专用模式、共享模式、单播模式和多播模式。
在一个可能的实现方式中，在S310之前，该方法还可以包括：向网络侧发送第三消息，其中，所述第三消息中携带有第二组播组信息。即终端设备可以通过发送第三消息触发网络侧切换传输模式。
在一个可能的实现方式中，所述第二组播组信息包括：一个组播组标识或一个组播组标识列表。其中，第二组播组信息中包括一个组播组标识或一个组播组标识列表，该组播组标识或组播组标识列表可以与传输模式转换指示中包括的一个组播组标识或一个组播组标识列表相同，也可以不同。例如，终端设备请求切换组播组标识1对应的组播业务数据1的传输方式，而核心网根据网络状况，确定需要切换的组播组业务还包括组播组业务2，因此，网络侧返回的传输模式转换指示中的组播组标识包括组播组标识1和组播组业务2对应的组播组标识2。
通过本发明实施例提供的传输模式转换方法，终端设备可以根据接收到的传输模式转换指示，进行传输模式转换，从而可以根据网络侧的指示转换业务数据的传输模式，传输模式灵活。
图4为本发明实施例提供的传输模式转换方法的另一种流程示意图，该方法400由基站和核心网的网络功能节点实现。换言之，所述方法可以由安装在基站和核心网的网络功能节点上的软件或硬件来执行。如图4所示，该方法可以包括以下步骤。
S410，基站判断接收某个或某些组播组业务的用户数超过模式转换触发条件(例如，预设的阈值)，或基于自身资源状况决定触发模式转换，将某个或某些组播业务的传输模式由专用模式转换为共享模式，向AMF发送接入网消息。所述接入网消息中包含第一组播组信息，该第一组播组信息包括一个组播组标识或一个组播组标识列表，比如TMGI， 所述接入网消息中还可包含第一用户标识信息(包括一个用户标识1或一个用户标识1列表)，比如5G_GUTI。其中，第一组播组信息用于指示待切换的一个或多个组播组业务，第一用户标识信息用于指示待切换的一个或多个终端设备。
在S410中，基站可以选择一个支持模式转换操作的目标AMF，例如，可根据用户标识1选择目标AMF。
S412，目标AMF通过第一用户标识信息找到服务该用户的原AMF，并从原AMF处获得对应的第二用户标识信息，比如SUPI。然后目标AMF调用MB-SMF的多播会话更新操作，例如，调用Nmbsmf_Session_Update操作，携带的参数包括第一组播组信息(包括一个组播组标识或一个组播组标识列表)，还可以包括第一用户标识信息(包括一个用户标识1或一个用户标识1列表)或第二用户标识信息(包括一个用户标识2或一个用户标识2列表)，还可以携带目标AMF的标识。
在S412中，如果上述接入网消息中携带的组播组标识列表中包括多个组播组标识，AMF也可以分别为每个组播组标识调用一次MB-SMF的多播会话更新操作。
S414，MB-SMF调用MBSF的模式转换通知操作。例如，调用Nmbsf_ModeSwitch_Notify操作，携带上述AMF调用MB-SMF时携带的参数，包括：第一组播组信息(一个组播组标识或一个组播组标识列表)，以及第一用户标识信息(一个用户标识1或一个用户标识1列表)和第二用户标识信息(一个用户标识2或一个用户标识2列表)中的一个，还可以携带目标AMF的标识。
S416，MBSF可以通过统一数据管理(UDM)功能获取AMF信息，并通过AMF获取用户标识1对应的用户标识2。
MBSF也可以通过调用模式转换通知操作时携带的组播组标识获得该组播组所有的成员用户标识2，MBSF逐个针对用户标识1或用户标识2调用AMF的消息传输业务操作，携带模式转换通知，比如，调用Namf_Communication_N1N2MessageTransfer操作。该模式转换通知可以为NAS Mode Switch消息。该模式转换通知中可以携带第二组播组信息和模式信息，其中，第二组播组信息包括一个组播组标识或一个组播组标识列表(即AMF输入的组播组标识参数)，模式信息用于指示转换为专用模式、共享模式、单播模式或多播模式，不携带可缺省为指示专用模式、共享模式、单播模式或多播模式，具体根据预先约定确定。在本实施例中，模式转换通知携带的模式信息指示的传输模式为共享模式，即指示各个用户标识1或用户标识2对应的终端设备，将模式转换通知中携带的一个组播组标识或一个组播组标识列表指示的组播业务的传输模式由专用模式转换为共享模式。
S418，AMF将模式转换通知转发给对应的UE。
图5为本发明实施例提供的传输模式转换方法的又一种流程示意图，该方法500由终端设备、基站和核心网的网络功能节点实现。换言之，所述方法可以由安装在终端设备、基站和核心网的网络功能节点上的软件或硬件来执行。如图5所示，该方法可以包括以下步骤。
S510，终端设备向基站上报无线消息，该无线消息中包含第一组播组信息，第一组播组信息可以包括一个组播标识或一个组播标识列表，比如一个TMGI或一个TMGI列表，该无线消息还可以包含第一用户标 识信息，第一用户标识信息可以包括一个用户标识1或一个用户标识1列表，比如5G_GUTI。
S512，基站向目标AMF发送接入网消息，该接入网消息中包含第一组播组信息，还可以包括第一用户标识信息。
在S512中，基站可以选择一个支持模式转换操作的目标AMF，如果接入到的无线消息中包含一个用户标识1，可根据用户标识1选择目标AMF。
S514，目标AMF调用MBSF的模式转换通知操作，至少携带第一组播组标识，比如，调用Nmbsf_ModeSwitch_Notify操作。另外，AMF调用MBSF的模式转换通知操作还可以携带第一用户标识信息或第二用户标识信息。
其中，如果S512中包含用户标识1，目标AMF可以通过用户标识1找到服务该用户的原AMF，并从原AMF处获得对应的用户标识2(即第二用户标识信息)，即调用模式转换通知操作可以携带一个用户标识2或一个用户标识2列表，或者也可以携带一个用户标识1或一个用户标识1列表。另外，还调用模式转换通知操作可以携带目标AMF的标识。
如果第一组播组信息中有多个组标识，则目标AMF可以分别为每个组播组标识调用一次MBSF的模式转换通知操作。
S516、MBSF可以通过UDM获取AMF信息，并通过AMF获取用户标识1对应的用户标识2。
MBSF也可以通过组播组标识获得组播组所有的成员用户标识2，MBSF针对各个用户标识1或用户标识2调用目标AMF的消息传输业务操作。比如调用Namf_Communication_N1N2MessageTransfer操作， 携带模式转换通知，该模式转换通知比如为NAS Mode Switch消息。该模式转换通知中可以携带第二组播组信息和模式信息，其中，第二组播组信息包括一个组播组标识或一个组播组标识列表(即AMF输入的组播组标识参数)，模式信息用于指示转换为专用模式、共享模式、单播模式或多播模式，不携带可缺省为指示专用模式、共享模式、单播模式、或多播模式，具体根据预先约定确定。
S518、AMF将模式转换通知转发给对应的UE。
图6为本发明实施例提供的传输模式转换方法的又一种流程示意图，该方法600由终端设备、基站和核心网的网络功能节点实现。换言之，所述方法可以由安装在终端设备、基站和核心网的网络功能节点上的软件或硬件来执行。如图6所示，该方法可以包括以下步骤。
S610、终端设备向基站上报无线消息。
该步骤与方法500中的S510相同，具体可以参见S510的描述。
S612、基站判断接收某个或某些组业务的用户数超过或低于模式转换触发条件，或基于自身资源状况决定触发模式转换，向目标AMF发送接入网消息。其中，该接入网消息中携带有第二组播组信息和第二用户标识信息，第二组播组信息包含一个组播组标识或一个组播组标识列表，比如TMGI，第二用户标识信息可包含一个用户标识1或一个用户标识1列表，比如5G_GUTI。基站可以选择一个支持模式转换操作的目标AMF，例如，可根据用户标识1选择目标AMF。
在该实施例中，第二组播组信息可以与终端设备上报的无线消息中的第一组播组信息相同，也可以不同。例如，第二组播组信息可以包含第一组播组信息。同样第二用户标识信息可以与无线消息中携带的第一 用户标识信息相同，也可以不同。例如，第二用户标识信息可以包含第一用户标识信息。
S614，目标AMF逐个通知第二用户标识信息指示的UE执行模式转换。
其中，目标AMF可以通过第二用户标识信息找到服务该用户的原AMF，并从原AMF处获得对应的第三用户标识信息，比如SUPI，还可获得其用户上下文，AMF逐个通知用户标识1或用户标识2对应的UE执行模式转换，比如发送NAS Mode Switch消息，该消息中可以携带第三组播组信息和模式信息，第三组播组信息可以包括一个组播组标识或一个组播组标识列表，可以与第二组播组信息相同，也可以不同。例如，第二组播组信息包含的组播组标识列表中可能包含多个组播组标识，但当前通知的UE只涉及其中一个或多个组播组业务，因此，目标AMF可以只通知该UE对这一个或多个组播组业务执行模式转换。模式信息与上述各个实施例中的相同，在此不再赘述。
在S614之后，终端设备还可以向目标AMF发送模式切换请求，AMF接收到模式切换请求后，调用MB-SMF执行多播会话更新操作。
图7为本发明实施例提供的传输模式转换方法的又一种流程示意图，该方法700由终端设备、基站和核心网的网络功能节点实现。换言之，所述方法可以由安装在终端设备、基站和核心网的网络功能节点上的软件或硬件来执行。如图7所示，该方法可以包括以下步骤。
S710，终端设备向基站发送无线消息，上报信息，其中包括第一组播组信息和用户标识1，比如C-RNTI(小区临时用户标识)。
S712，基站判断接收某个或某些组播组业务的用户数超过或低于模 式转换触发条件，或基于自身资源状况决定触发模式转换，向通知用户标识1对应的UE发送模式转换通知，通知UE执行模式转换。比如发送RRC Mode Switch消息，携带一个第二组播组信息和模式信息。其中，第二组播组信息与终端设备发送的无线消息中的第一组播组信息可以相同，也可以不同，即基站确定进行模式转换的组播业务可以与终端设备上报的组播业务相同，也可以不同。例如，第二组播组信息可以包含第一组播组信息。模式信息可以指示转换为专用模式、共享模式、单播模式或多播模式，不携带模式信息可缺省为指示专用模式、共享模式、单播模式、或多播模式，具体可以根据预先约定确定。
S714，UE收到模式转换通知后执行模式转换操作，向基站发送模式转换请求，比如发送Multicast Session Update请求，携带一个组播组标识或一个组播组标识列表，还可携带模式信息。
S716，基站转发模式转换请求给目标AMF，在转发的模式转换请求中添加RAN(无线接入网节点)触发指示，用于指示该请求由RAN触发。
S718，目标AMF调用MB-SMF的模式转换通知，调用参数包含一个组播组标识或一个组播组标识列表(可以与接收到的模式转换请求中的相同)，还可包含所述模式信息，还可包含所述触发指示。MB-SMF依据所述触发指示，以及组播组标识或组播组标识列表释放基站的服务于相应组播组标识或组播组标识列表的用户面，比如，连续收到多个携带触发指示的通知后，在等待一段时间再未收到通知时执行释放操作。
图8是本发明实施例提供的一种接入网设备的结构示意图，如图6所示，该接入网设备800包括：发送模块810，用于向核心网发送第一 消息，或向终端设备发送第二消息，指示需要进行传输模式转换，其中，所述第一消息中携带有第一用户信息和第一组播组信息。
在一个可能的实现方式中，所述第二消息携带有第一组播组信息。
在一个可能的实现方式中，所述第一消息中携带有模式信息，或，所述第二消息中携带有模式信息，其中，所述模式信息用于指示组播业务数据的传输模式。
在一个可能的实现方式中，所述模式信息指示的传输模式包括以下一项：专用模式、共享模式、单播模式和多播模式。
在一个可能的实现方式中，所述第一组播组信息包括：一个组播组标识或一个组播组标识列表。
在一个可能的实现方式中，所述第一用户信息包括：一个第一用户标识或一个第一用户标识列表。
在一个可能的实现方式中，还包括：第一接收模块，用于在发送所述第一消息或所述第二消息之前，接收所述终端设备发送的第三消息，其中，所述第三消息中携带有第二用户信息和第二组播组信息，所述第二组播组信息用于指示所述需要进行传输模式转换的组播组。
在一个可能的实现方式中，所述第二组播组信息包括：一个组播组标识或一个组播组标识列表，和/或，所述第二用户信息包括：一个第二用户标识。
在一个可能的实现方式中，还包括：第二接收模块，用于在向终端设备发送第二消息之后，接收所述终端设备发送的模式转换请求，其中，所述模式转换请求中携带有所述第一组播组信息；转发模块，用于向所述核心网发送所述第四消息，其中，所述第四消息包含所述模式转换请 求和触发指示，其中，所述触发指示用于指示模式转换请求由无线接入网络节点触发。
在一个可能的实现方式中，还包括：决策模块，用于在发送所述第一消息或所述第二消息之前，确定目标用户数超过或低于预设的传输模式转换触发条件，其中，所述目标用户数为接收与所述第一组播组信息对应的组播业务的用户总数；或者，基于所述接入网设备的资源状况确定需要进行传输模式转换。
本发明实施例提供的接入网设备能够实现图1至图7的各个方法实施例中基站实现的各个过程，并达到相同的效果为避免重复，这里不再赘述。
图9是本发明实施例提供的一种核心网设备的结构示意图，如图9所示，该核心网设备900包括：触发模块910，用于在接收到携带第一组播组信息和第一用户信息的第一消息，或者以第一组播组信息和第一用户信息为参数的操作被调用时，触发发送模块920；发送模块920，用于向与所述第一用户信息相关联的终端设备发送传输模式转换指示。
在一个可能的实现方式中，所述第一组播信息包括：一个组播组标识或一个组播组标识列表。
在一个可能的实现方式中，所述第一用户信息包括：一个第一用户标识或一个第一用户标识列表；向与所述第一用户信息相关联的终端设备发送传输模式转换指示，包括：向所述第一用户标识所指示的终端设备发送所述传输模式转换指示，或，向所述第一用户标识列表所指示的一个或多个终端设备发送所述传输模式转换指示。
在一个可能的实现方式中，所述第一用户信息包括：一个第一用户 标识或一个第一用户标识列表；向与所述第一用户信息相关联的终端设备发送传输模式转换指示，包括：根据所述第一用户标识，获取第二用户标识，向所述第二用户标识所指示的终端设备发送所述传输模式转换指示；或，根据所述第一用户标识列表，获取第二用户标识列表，向所述第二用户标识列表所指示的一个或多个终端设备发送所述传输模式转换指示。
在一个可能的实现方式中，所述传输模式转换指示包括第三组播组信息，所述第三播组信息用于指示进行传输模式转换的组播组。
在一个可能的实现方式中，所述第三组播组信息包括：一个组播组标识或一个组播组标识列表。
在一个可能的实现方式中，所述传输模式转换指示包括：模式信息，所述模式信息用于指示组播业务数据的传输模式。
在一个可能的实现方式中，所述传输模式包括以下一项：专用模式、共享模式、单播模式和多播模式。
在一个可能的实现方式中，还可以包括：接收模块，用于在向与所述第一用户信息相关联的终端设备发送传输模式转换指示之后，接收所述终端设备发送的模式转换请求，其中，所述模式转换请求中携带有所述第三组播组信息；调用模块，用于使用所述第三组播组信息和触发指示作为调用参数，调用会话更新操作，释放与所述第三组播组信息对应的连接。
本发明实施例提供的网络设备能够实现上述图1至图7中各个方法实施例中各个网络功能节点实现的各个过程，并达到相同的效果为避免重复，这里不再赘述。
图10是本发明实施例提供的一种终端设备的结构示意图，如图10所示，该终端设备1000包括：接收模块1010，用于接收传输模式转换指示，根据所述传输模式转换指示，进行传输模式转换。
在一个可能的实现方式中，还包括：第一发送模块，用于在接收传输模式转换指示之前，向网络侧发送第三消息，其中，所述第三消息中携带有第二组播组信息。
在一个可能的实现方式中，所述第二组播组信息包括：一个组播组标识或一个组播组标识列表。
在一个可能的实现方式中，所述传输模式转换指示包括一个组播组标识或一个组播组标识列表。
在一个可能的实现方式中，所述传输模式转换指示包括：模式信息，所述模式信息用于指示组播业务数据的传输模式。
在一个可能的实现方式中，所述传输模式包括以下一项：专用模式、共享模式、单播模式和多播模式。
在一个可能的实现方式中，还包括：第二发送模块，用于在进行传输模式转换之后，发送模式转换请求，其中，所述模式转换请求中携带有所述传输模式转换指示。
本发明实施例提供的网络设备能够实现上述图1至图7中各个方法实施例中各个终端设备实现的各个过程，并达到相同的效果为避免重复，这里不再赘述。
图11是本发明另一个实施例的终端设备的框图。图11所示的终端设备1100包括：至少一个处理器1101、存储器1102、至少一个网络接口1104和用户接口1103。终端设备1100中的各个组件通过总线系统 1105耦合在一起。可理解，总线系统1105用于实现这些组件之间的连接通信。总线系统1105除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图11中将各种总线都标为总线系统1105。
其中，用户接口1103可以包括显示器、键盘或者点击设备(例如，鼠标，轨迹球(trackball)、触感板或者触摸屏等。
可以理解，本发明实施例中的存储器1102可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synch Link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本发明实施例描述的系统和方法的存储器1102旨在包括但不限于这些和任意其它适合类型的存储器。
在一些实施方式中，存储器1102存储了如下的元素，可执行模块 或者数据结构，或者他们的子集，或者他们的扩展集：操作系统11021和应用程序11022。
其中，操作系统11021，包含各种系统程序，例如框架层、核心库层、驱动层等，用于实现各种基础业务以及处理基于硬件的任务。应用程序11022，包含各种应用程序，例如媒体播放器(Media Player)、浏览器(Browser)等，用于实现各种应用业务。实现本发明实施例方法的程序可以包含在应用程序11022中。
在本发明实施例中，终端设备1100还包括：存储在存储器上1102并可在处理器1101上运行的计算机程序，计算机程序被处理器1101执行时实现如下步骤：接收传输模式转换指示，根据所述传输模式转换指示，进行传输模式转换。
上述本发明实施例揭示的方法可以应用于处理器1101中，或者由处理器1101实现。处理器1101可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1101中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器1101可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机 存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的计算机可读存储介质中。该计算机可读存储介质位于存储器1102，处理器1101读取存储器1102中的信息，结合其硬件完成上述方法的步骤。具体地，该计算机可读存储介质上存储有计算机程序，计算机程序被处理器1101执行时实现如上述方法300中的各步骤。
可以理解的是，本发明实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processing，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本发明所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本发明实施例所述功能的模块(例如过程、函数等)来实现本发明实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
终端设备1100能够实现前述图1至图7中终端设备实现的各个过程，为避免重复，这里不再赘述。
请参阅图12，图12是本发明实施例应用的网络设备的结构图，能够作为基站或网络功能节点实现方法100和200中的各细节，并达到相同的效果。如图12所示，网络设备1200包括：处理器1201、收发机1202、存储器1203、用户接口1204和总线接口，其中：
在本发明实施例中，网络设备1200还包括：存储在存储器上1203并可在处理器1201上运行的计算机程序，计算机程序被处理器1201执行时实现如下步骤：向核心网发送第一消息，或向终端设备发送第二消息，指示需要进行传输模式转换，其中，所述第一消息中携带有第一用户信息和第一组播组信息。
或者，计算机程序被处理器1201执行时实现如下步骤：
接收到携带第一组播组信息和第一用户信息的第一消息，或者以第一组播组信息和第一用户信息为参数的操作被调用；
向与所述第一用户信息相关联的终端设备发送传输模式转换指示。
在图12中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1201代表的一个或多个处理器和存储器1203代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1202可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口1204还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1201负责管理总线架构和通常的处理，存储器1203可以存储处理器1201在执行操作时所使用的数据。
网络设备1200能够实现前述图1至图5中网络侧或网络设备实现的各个过程，并达到相同的效果为避免重复，这里不再赘述。
本发明实施例还提供一种计算机可读存储介质，计算机可读存储介 质上存储有计算机程序，该计算机程序被处理器执行时实现上述图1至图7中所示的各个实施例的基站、网络功能节点或终端设备执行各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本发明各个实施例所述的方法。
上面结合附图对本发明的实施例进行了描述，但是本发明并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本发明的启示下，在不脱离本发明 宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本发明的保护之内。

Claims (33)

  1. 一种传输模式转换指示方法，应用于基站，所述方法包括：
    向核心网发送第一消息，或向终端设备发送第二消息，指示需要进行传输模式转换，其中，所述第一消息中携带有第一用户信息和第一组播组信息。
  2. 如权利要求1所述的方法，其中，所述第二消息携带有所述第一组播组信息。
  3. 如权利要求2所述的方法，其中，所述第一消息中携带有模式信息，或，所述第二消息中携带有模式信息；其中，所述模式信息用于指示组播业务数据的传输模式。
  4. 如权利要求3所述的方法，其中，所述模式信息指示的传输模式包括以下一项：共享模式，专用模式、单播模式和多播模式。
  5. 如权利要求1所述的方法，其中，所述第一组播组信息包括：组播组标识或组播组标识列表。
  6. 如权利要求1所述的方法，其中，所述第一用户信息包括：第一用户标识或第一用户标识列表。
  7. 如权利要求1至6任一项所述的方法，其中，在发送所述第一消息或所述第二消息之前，所述方法还包括：
    接收所述终端设备发送的第三消息，其中，所述第三消息中携带有第二用户信息和第二组播组信息，所述第二组播组信息用于指示所述需要进行传输模式转换的组播组。
  8. 如权利要求7所述的方法，其中，所述第二组播组信息包括：组播组标识或组播组标识列表；和/或，所述第二用户信息包括：第二用户标识。
  9. 如权利要求2至6任一项所述的方法，其中，在向终端设备发送第二消息之后，所述方法还包括：
    接收所述终端设备发送的模式转换请求，其中，所述模式转换请求中携带有所述第一组播组信息；
    向所述核心网发送所述第四消息，其中，所述第四消息包含所述模式转换请求和触发指示，其中，所述触发指示用于指示模式转换请求由无线接入网络节点触发。
  10. 如权利要求1至6任一项所述的方法，其中，在发送所述第一消息或所述第二消息之前，所述方法还包括：
    确定目标用户数超过或低于预设的传输模式转换触发条件，其中，所述目标用户数为接收与所述第一组播组信息对应的组播业务的用户总数；或者，
    基于所述接入网设备的资源状况确定需要进行传输模式转换。
  11. 一种传输模式转换指示方法，应用于网络功能节点，所述方法包括：
    接收携带第一组播组信息和第一用户信息的第一消息，或者以第一组播组信息和第一用户信息为参数的操作被调用；
    向与所述第一用户信息相关联的终端设备发送传输模式转换指示。
  12. 如权利要求11所述的方法，其中，所述第一组播信息包括：一个组播组标识或一个组播组标识列表。
  13. 如权利要求11所述的方法，其中，
    所述第一用户信息包括：第一用户标识或第一用户标识列表；
    向与所述第一用户信息相关联的终端设备发送传输模式转换指示，包括：向所述第一用户标识所指示的终端设备发送所述传输模式转换指示，或，向所述第一用户标识列表所指示的一个或多个终端设备发送所述传输模式转换指示。
  14. 如权利要求11所述的方法，其中，
    所述第一用户信息包括：第一用户标识或第一用户标识列表；
    向与所述第一用户信息相关联的终端设备发送传输模式转换指示，包括：根据所述第一用户标识，获取第二用户标识，向所述第二用户标识所指示的终端设备发送所述传输模式转换指示；或，根据所述第一用户标识列表，获取第二用户标识列表，向所述第二用户标识列表所指示的一个或多个终端设备发送所述传输模式转换指示。
  15. 如权利要求11至14任一项所述的方法，其中，所述传输模式转换指示包括第三组播组信息，所述第三播组信息用于指示进行传输模式转换的组播组。
  16. 如权利要求15所述的方法，其中，所述第三组播组信息包括：组播组标识或组播组标识列表。
  17. 如权利要求8至11任一项所述的方法，其特征在于，所述传输模式转换指示包括：模式信息，所述模式信息用于指示组播业务数据的传输模式。
  18. 如权利要求17所述的方法，其中，所述传输模式包括以下一项：专用模式、共享模式、单播模式和多播模式。
  19. 如权利要求15所述的方法，其中，在向与所述第一用户信息相关联的终端设备发送传输模式转换指示之后，所述方法还包括：
    接收所述终端设备发送的模式转换请求，其中，所述模式转换请求中携带有所述第三组播组信息；
    使用所述第三组播组信息和触发指示作为调用参数，调用会话更新操作，
    释放与所述第三组播组信息对应的连接。
  20. 一种传输模式转换方法，应用于终端设备，所述方法包括：
    接收传输模式转换指示，根据所述传输模式转换指示，进行传输模式转换。
  21. 如权利要求20所述的方法，其中，在接收传输模式转换指示之前，所述方法还包括：向网络侧发送第三消息，其中，所述第三消息中携带有第二组播组信息。
  22. 如权利要求21所述的方法，其中，所述第二组播组信息包括：组播组标识或组播组标识列表。
  23. 如权利要求20至22任一项所述的方法，其中，所述传输模式转换指示包括组播组标识或组播组标识列表。
  24. 如权利要求23所述的方法，其中，所述传输模式转换指示包括：模式信息，所述模式信息用于指示组播业务数据的传输模式。
  25. 如权利要求24所述的方法，其中，所述传输模式包括以下一项：专用模式，共享模式，单播模式和多播模式。
  26. 如权利要求23所述的方法，其中，在进行传输模式转换之后，所述方法还包括：
    发送模式转换请求，其中，所述模式转换请求中携带有所述传输模式转换指示。
  27. 一种接入网设备，包括：
    发送模块，用于向核心网发送第一消息，或向终端设备发送第二消息，指示需要进行传输模式转换，其中，所述第一消息中携带有第一用户信息和第一组播组信息。
  28. 一种核心网设备，包括：
    触发模块，用于在接收到携带第一组播组信息和第一用户信息的第一消息，或者以第一组播组信息和第一用户信息为参数的操作被调用时，触发发送模块；
    所述发送模块，用于向与所述第一用户信息相关联的终端设备发送传输模式转换指示。
  29. 一种终端设备，包括：
    接收模块，用于接收传输模式转换指示，根据所述传输模式转换指示，进行传输模式转换。
  30. 一种接入网设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至10中任一项所述的方法的步骤。
  31. 一种核心网设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求11至19中任一项所述的方法的步骤。
  32. 一种终端设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求20至26中任一项所述的方法的步骤。
  33. 一种计算机可读存储介质，所述计算机可读存储介质上存储有计 算机程序，所述计算机程序被处理器执行时实现：
    如权利要求1至10中任一项所述的方法的步骤；或者
    如权利要求11至19中任一项所述的方法的步骤；或者
    如权利要求20至26中任一项所述的方法的步骤。
PCT/CN2021/082366 2020-03-23 2021-03-23 传输模式转换指示方法、接入网设备及终端设备 WO2021190498A1 (zh)

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