WO2022068622A1 - 控制媒体流业务传输的方法、用户终端、网络节点、系统、存储介质及电子设备 - Google Patents

控制媒体流业务传输的方法、用户终端、网络节点、系统、存储介质及电子设备 Download PDF

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Publication number
WO2022068622A1
WO2022068622A1 PCT/CN2021/119239 CN2021119239W WO2022068622A1 WO 2022068622 A1 WO2022068622 A1 WO 2022068622A1 CN 2021119239 W CN2021119239 W CN 2021119239W WO 2022068622 A1 WO2022068622 A1 WO 2022068622A1
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Prior art keywords
service
media stream
network
identifier
network node
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PCT/CN2021/119239
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English (en)
French (fr)
Inventor
张卓筠
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腾讯科技（深圳）有限公司
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Priority to JP2022561029A priority Critical patent/JP7411827B2/ja
Priority to EP21874283.1A priority patent/EP4132213A4/en
Publication of WO2022068622A1 publication Critical patent/WO2022068622A1/zh
Priority to US17/973,374 priority patent/US11909793B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2408—Traffic characterised by specific attributes, e.g. priority or QoS for supporting different services, e.g. a differentiated services [DiffServ] type of service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1083—In-session procedures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80—Responding to QoS
    • 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
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]

Definitions

  • the present application relates to the field of wireless communications, and more particularly to a method for controlling media stream service transmission, a user terminal for controlling media stream service transmission, a network node in a data network, and a network node in a core network, a control A system for media streaming service transmission, a non-volatile computer-readable storage medium, and an electronic device.
  • 5G systems provide many new features, such as mobile broadband connections with high bit rates and low latency, network slicing, distributed and mobile edge computing, etc., which can improve the quality and efficiency of audio and video streaming services , and can provide new services beyond traditional 2D video (such as virtual reality and mixed reality), which provides new opportunities both technically and commercially.
  • 5GMSA 5G Media Streaming Architecture
  • 5GMSA offers a simpler and modular design that enables third-party content service providers, broadcasters and mobile network operators to collaborate to varying degrees.
  • the focus is on leveraging the concept of capability exposure to give external service providers an easy way to interact with 5G network and device capabilities, and to use the capabilities provided by 5G to provide better media services.
  • the 5GMS system is a collection of application functions, application servers, terminal devices and interfaces of the 5G media streaming architecture, which supports downstream media streaming services or upstream media streaming services or both.
  • Different continuity modes are set for Protocol Data Unit (PDU) sessions to provide different continuity to different PDU sessions.
  • PDU Protocol Data Unit
  • the current 5GMS system's transmission control of media stream data flow is still not fine-tuned enough.
  • the network-side equipment of the current 5GMS system cannot distinguish multiple media stream service data with the same IP address and port number.
  • the continuity requirements of different types of media streaming services are not considered, so the interaction and negotiation of the service continuity requirements cannot be realized.
  • the present application proposes a method for controlling the transmission of a media stream service performed by a user terminal, a method for controlling the transmission of a media stream service performed by a network node in a data network, A method for controlling the transmission of a media stream service performed by a network node in a core network, a method for controlling the transmission of a media stream service, a corresponding electronic device, and a non-volatile computer-readable storage medium.
  • the embodiment of the present application provides a method for controlling the transmission of a media stream service executed by a user terminal.
  • the method includes: receiving, from a network node in a data network, policy template information for controlling the transmission of the media stream service and a service identifier corresponding to the policy template information, where the service identifier is used to distinguish the media stream media stream services of different service types in the service; based on the policy template information and the service identifier, determine the service identifier of the media stream service to be initiated; determine whether there is a protocol capable of carrying the media stream service to be initiated data unit session, wherein the protocol data unit session includes a quality of service stream corresponding to the service identifier of the media stream service to be initiated; in the case that the protocol data unit session exists, the to-be-initiated The media stream service is bound to the quality of service stream in the protocol data unit session; in the absence of the protocol data unit session, establish a service including a service specifier corresponding to the media stream service to be initiated A protocol data unit session for
  • the embodiments of the present application provide a method for controlling media stream service transmission performed by a network node in a data network.
  • the method includes: sending a service flow type identifier of the media stream service to a network node in a core network, where the service flow type identifier is used to describe media stream services of different functions in the media stream service; from the core network
  • the network node in receives the service identifier corresponding to the media stream service, wherein the service identifier is used to distinguish media stream services of different service types in the media stream service, and the service identifier is the same as the service identifier.
  • corresponding to the stream type identifier determining the policy template information corresponding to the service identifier and used for controlling the transmission of the media stream service; sending the policy template information and the service identifier to the user terminal.
  • the embodiments of the present application provide a method for controlling media stream service transmission performed by a network node in a data network.
  • the method includes: sending a to-be-confirmed service identifier of the media stream service to a network node in the core network, wherein the service identifier is used to distinguish media stream services of different service types in the media stream service;
  • the network node in the core network receives the confirmed service identifier of the media stream service; determines the policy template information corresponding to the confirmed service identifier and used to control the transmission of the media stream service; Send the policy template information and the service identifier to the user terminal.
  • An embodiment of the present application provides a method for controlling media stream service transmission performed by a network node in a core network, comprising: receiving a service stream type identifier of the media stream service from a network node in a data network, and the The service stream type identifier is used to describe the media stream service of different functions in the media stream service; based on the service stream type identifier of the media stream service and the network policy or local configuration information of the network node in the core network, determine A service identifier of the media stream service, where the service identifier is used to distinguish media stream services of different service types in the media stream service; send the service differentiation of the media stream service to a network node in the data network symbol.
  • the embodiment of the present application provides a method for controlling the transmission of a media stream service performed by a network node in a core network, comprising: receiving a service identifier to be confirmed of the media stream service from a network node in a data network,
  • the service identifier is used to distinguish media stream services of different service types in the media stream service; the service identifier to be confirmed in the media stream service and the network policy or local configuration of the network node in the core network If the information matches, confirm the service identifier of the media stream service to be confirmed as the service identifier of the media stream service; In the case where the network policy or local configuration information of the network node in the core network does not match, the service identifier that matches the network policy or local configuration information of the network node in the core network is confirmed as the service differentiation of the media streaming service. identifier; sending the service identifier of the media stream service to the network node in the data network.
  • the embodiment of the present application provides a method for controlling the transmission of a media stream service.
  • the method includes: from a network node in a data network to a network node in a core network, the service flow type identifier of the media stream service, where the service flow type identifier is used to describe media stream services of different functions in the media stream service ; Receive the service flow type identifier of the media stream service from the network node in the data network by the network node in the core network; be based on the service flow type of the media stream service by the network node in the core network identifier, and the network policy or local configuration information of the network node in the core network to determine the service identifier of the media stream service, where the service identifier is used to distinguish media streams of different service types in the media stream service service; the service identifier of the media stream service is sent by the network node in the core network to the network node in the data network; received by the network node in the data network from the network node in the core network the service identifier
  • the protocol data unit session includes a quality of service stream corresponding to the service identifier of the media stream service to be initiated; in the case that the protocol data unit session exists, the user terminal converts the The media stream service to be initiated is bound to the quality of service stream in the protocol data unit session; in the case that the protocol data unit session does not exist, the user terminal establishes a media stream that includes and is associated with the to-be-initiated media stream.
  • the protocol data unit session of the quality of service flow corresponding to the service identifier of the service.
  • the embodiment of the present application provides a method for controlling the transmission of a media stream service.
  • the method includes: sending, by a network node in a data network, a service identifier to be confirmed of the media stream service to a network node in a core network, wherein the service identifier is used to distinguish different services in the media stream service type of media streaming service; the service identifier to be confirmed of the media streaming service is received by the network node in the core network from the network node in the data network; the service identifier to be confirmed of the media streaming service is differentiated
  • the network node in the core network confirms the to-be-confirmed service identifier of the media stream service as the media The service identifier of the streaming service; when the to-be-confirmed service identifier of the media streaming service does not match the network policy or local configuration information of the network node in the core network, the network in the core network The node confirm
  • the service specifier the user terminal receives the policy template information and the service specifier from a network node in the data network; the user terminal receives the policy template information and the service specifier based on the policy template information and the service specifier , determine the service identifier of the media stream service to be initiated; the user terminal determines whether there is a protocol data unit session capable of carrying the media stream service to be initiated, wherein the protocol data unit session includes the quality of service flow corresponding to the service identifier of the initiated media stream service; in the case that the protocol data unit session exists, the user terminal binds the to-be-initiated media stream service to the protocol data unit session on the QoS stream in the QoS stream; in the absence of the protocol data unit session, the user terminal establishes a protocol data unit session including a QoS stream corresponding to the service identifier of the media stream service to be initiated .
  • Embodiments of the present application provide a non-volatile computer-readable storage medium on which computer instructions are stored, and when the computer instructions are executed by a processor, implement the above method.
  • a computer program product or computer program comprising computer instructions stored in a non-volatile computer readable storage medium.
  • the processor of the computer device reads the computer instructions from the computer readable medium, and the processor executes the computer instructions to cause the computer device to perform the methods provided in the various aspects described above or in various optional implementations of the various aspects described above.
  • Embodiments of the present application provide an electronic device, including: a processor; and a memory, wherein a computer-executable program is stored in the memory, and when the computer-executable program is executed by the processor, the above-mentioned computer-executable program is executed. Methods.
  • Embodiments of the present application provide a user terminal for controlling media streaming service transmission, comprising: a memory; and one or more processors operably coupled to the memory, the memory and the one or more processors Each processor is configured to: receive, from a network node in the data network, policy template information for controlling the transmission of the media stream service and a service identifier corresponding to the policy template information, where the service identifier is used to distinguish all media stream services of different service types in the media stream service; based on the policy template information and the service identifier, determine the service identifier of the media stream service to be initiated; determine whether there is a media stream capable of carrying the to-be-initiated media stream A protocol data unit session of a service, wherein the protocol data unit session includes a quality of service stream corresponding to the service identifier of the media stream service to be initiated; in the case that the protocol data unit session exists, the The media stream service to be initiated is bound to the QoS stream in the protocol data unit session; in the case that the protocol data unit session
  • An embodiment of the present application provides a user terminal for controlling the transmission of a media stream service, comprising: a receiving unit configured to: receive policy template information for controlling the transmission of the media stream service from a network node in a data network and a service identifier corresponding to the policy template information, where the service identifier is used to distinguish media stream services of different service types in the media stream service; the first determining unit is configured to: based on the policy template information and The service identifier is used to determine the service identifier of the media stream service to be initiated; the second determination unit is configured to: determine whether there is a protocol data unit session capable of carrying the media stream service to be initiated, wherein the The protocol data unit session includes a quality of service stream corresponding to the service identifier of the media stream service to be initiated; the session unit is configured to: in the case that the protocol data unit session exists, transfer the media stream to be initiated.
  • the streaming service is bound to the quality of service stream in the protocol data unit session; in the absence of the protocol data unit session, establishing
  • Embodiments of the present application provide a network node in a data network controlled by media stream traffic transmission, comprising: a memory; and one or more processors operably coupled to the memory, the memory and the The one or more processors are configured to: send a service flow type identifier of the media streaming service to a network node in the core network, where the service flow type identifier is used to describe media streams of different functions in the media streaming service service; receiving a service identifier corresponding to the media stream service from a network node in the core network, wherein the service identifier is used to distinguish media stream services of different service types in the media stream service, and the The service identifier corresponds to the service flow type identifier; the policy template information corresponding to the service identifier and used for controlling the transmission of the media stream service is determined; and the policy template information and the business specifier.
  • An embodiment of the present application provides a network node in a data network that controls media stream service transmission, including: a first sending unit configured to: send a service stream of the media stream service to a network node in a core network a type identifier, where the service stream type identifier is used to describe media stream services of different functions in the media stream service; a receiving unit is configured to: receive a service corresponding to the media stream service from a network node in the core network a distinguisher, wherein the service distinguisher is used to distinguish media stream services of different service types in the media stream service, and the service distinguisher corresponds to the service stream type identifier; the determining unit is configured as: Determine the policy template information corresponding to the service identifier and used for controlling the transmission of the media stream service; a second sending unit, configured to: send the policy template information and the service identifier to the user terminal.
  • Embodiments of the present application provide a network node in a data network that controls media streaming service transmission, comprising: a memory; and one or more processors operably coupled to the memory, the memory and the memory
  • One or more processors are configured to: send to a network node in the core network a service identifier to be confirmed of the media stream service, wherein the service identifier is used to distinguish different service types in the media stream service the confirmed media stream service; receive the confirmed service identifier of the media stream service from the network node in the core network; determine the service identifier corresponding to the confirmed service identifier for controlling the media stream service
  • the transmitted policy template information; the policy template information and the service identifier are sent to the user terminal.
  • An embodiment of the present application provides a network node in a data network for controlling media stream service transmission, including: a first sending unit configured to: send a to-be-confirmed message of the media stream service to a network node in a core network a service identifier, wherein the service identifier is used to distinguish media stream services of different service types in the media stream service; a receiving unit is configured to: receive the media stream service from a network node in the core network The confirmed service identifier; the determining unit is configured to: determine the policy template information corresponding to the confirmed service identifier and used to control the transmission of the media stream service; the second sending unit, configured The steps are: sending the policy template information and the service identifier to the user terminal.
  • Embodiments of the present application provide a network node in a core network that controls media streaming service transmission, comprising: a memory; and one or more processors operably coupled to the memory, the memory and the One or more processors are configured to: receive, from a network node in a data network, a service flow type identifier of the media streaming service, where the service flow type identifier is used to describe media streaming services of different functions in the media streaming service ; Determine the service identifier of the media stream service based on the service stream type identifier of the media stream service and the network policy or local configuration information of the network node in the core network, and the service identifier is used to distinguish all media stream services of different service types in the media stream service; send the service identifier of the media stream service to the network node in the data network.
  • An embodiment of the present application provides a network node in a core network for controlling media stream service transmission, comprising: a receiving unit configured to: receive a service stream type identifier of the media stream service from a network node in a data network, The service stream type identifier is used to describe media stream services of different functions in the media stream service; the determining unit is configured to: based on the service stream type identifier of the media stream service and a network node in the core network The network policy or local configuration information of the media stream service determines the service identifier of the media stream service, and the service identifier is used to distinguish media stream services of different service types in the media stream service; the sending unit is configured to: send to all The network node in the data network sends the service identifier of the media stream service.
  • Embodiments of the present application provide a network node in a core network that controls media streaming service transmission, comprising: a memory; and one or more processors operably coupled to the memory, the memory and the One or more processors are configured to: receive from a network node in a data network a service specifier to be acknowledged for the media streaming service, the service specifier being used to distinguish media of different service types in the media streaming service Streaming service; in the case that the service identifier of the media stream service to be confirmed matches the network policy or local configuration information of the network node in the core network, distinguish the service to be confirmed of the media stream service The identifier is confirmed as the service identifier of the media stream service; in the case that the service identifier to be confirmed of the media stream service does not match the network policy or local configuration information of the network node in the core network, it will be matched with The service specifier that matches the network policy or local configuration information of the network node in the core network is confirmed as the service specifier of the media stream service; the service of the
  • An embodiment of the present application provides a network node in a core network that controls the transmission of a media stream service, including: a receiving unit configured to: receive from a network node in a data network the service distinction to be confirmed of the media stream service
  • the service identifier is used to distinguish media stream services of different service types in the media stream service
  • the confirmation unit is configured to: the service identifier to be confirmed of the media stream service and the core network In the case of matching the network policy or local configuration information of the network node of the In the case where the service specifier does not match the network policy or local configuration information of the network node in the core network, confirm the service specifier that matches the network policy or local configuration information of the network node in the core network.
  • the sending unit is configured to: send the service identifier of the media stream service to the network node in the data network.
  • An embodiment of the present application provides a system for controlling media stream service transmission, including a user terminal, a network node in a data network, and a network node in a core network, wherein: the network node in the data network is configured as: Send the service flow type identifier of the media stream service to the network node in the core network, where the service flow type identifier is used to describe the media stream service of different functions in the media stream service; The network node receives a service identifier corresponding to the media stream service, wherein the service identifier is used to distinguish media stream services of different service types in the media stream service, and the service identifier is different from the service stream type.
  • the network node is configured to: receive the service flow type identifier of the media stream service from the network node in the data network, and the service flow type identifier is used to describe the media stream service of different functions in the media stream service ; Determine the service identifier of the media stream service based on the service stream type identifier of the media stream service and the network policy or local configuration information of the network node in the core network, and the service identifier is used to distinguish all the media stream service of different service types in the media stream service; send the service identifier of the media stream service to the network node in the data network; the user terminal is configured to: from the network in the data network a node that receives policy template information for controlling the transmission of the media stream service and a service identifier corresponding to the policy template information, where the service identifier
  • An embodiment of the present application provides a system for controlling media stream service transmission, including a user terminal, a network node in a data network, and a network node in a core network, wherein: the network node in the data network is configured as: Send the service identifier to be confirmed of the media stream service to the network node in the core network, wherein the service identifier is used to distinguish media stream services of different service types in the media stream service; The network node in the core network receives the confirmed service identifier of the media stream service; determines the policy template information corresponding to the confirmed service identifier and is used to control the transmission of the media stream service; to the user The terminal sends the policy template information and the service identifier; the network node in the core network is configured to: receive the to-be-confirmed service identifier of the media stream service from the network node in the data network, The service identifier is used to distinguish media stream services of different service types in the media stream service; the service identifier to be confirmed in the media stream service and
  • the user terminal is configured to: receive from the network node in the data network a service identifier for controlling the transmission of the media stream service
  • the policy template information and the service identifier corresponding to the policy template information, the service identifier is used to distinguish media stream services of different service types in the media stream service; based on the policy template information and the service identifier , determine the service identifier of the media stream service to be initiated; determine whether there is a protocol data unit session that can carry the media stream service to be initiated, wherein the protocol data unit session includes the media stream service to be initiated.
  • the user terminal by receiving the policy template with the continuity feature from the device on the network side, the user terminal can use the PDU session with the appropriate continuity feature when initiating or changing the service of the media stream.
  • FIG. 1 shows an architecture of a communication system in which embodiments of the present application may be applied.
  • FIG. 2A shows a flowchart of a method for controlling media streaming service transmission performed by a user terminal in which the embodiments of the present application may be applied, according to an embodiment of the present application.
  • FIG. 2B shows a schematic diagram of a method for controlling media streaming service transmission performed by a user terminal in which the embodiments of the present application may be applied, according to an embodiment of the present application.
  • FIG. 3A shows a flowchart of a method for controlling media streaming service transmission performed by a network node in a data network according to an embodiment of the present application.
  • FIG. 3B shows a schematic diagram of a method for controlling media stream service transmission performed by a network node in a data network, in which embodiments of the present application may be applied, according to an embodiment of the present application.
  • 3C shows a flowchart of a method for controlling media stream service transmission performed by a network node in a data network according to an embodiment of the present application.
  • FIG. 3D shows a schematic diagram of a method for controlling media stream service transmission performed by a network node in a data network, in which embodiments of the present application may be applied, according to an embodiment of the present application.
  • FIG. 4A shows a flowchart of a method for controlling media streaming service transmission performed by a network node in a data network according to an embodiment of the present application.
  • FIG. 4B shows a flowchart of a method for controlling media streaming service transmission performed by a network node in a data network according to an embodiment of the present application.
  • FIG. 5A shows a schematic diagram of a method performed by a communication system to control the transmission of media streaming services.
  • FIG. 5B shows a schematic diagram of a method performed by a communication system to control the transmission of media streaming services.
  • FIG. 6 shows the architecture of an electronic device according to an embodiment of the present application.
  • the strategy for controlling the media stream service sent by the network side device to the user terminal does not take into account the service continuity of the media stream.
  • the flow descriptor related to the strategy for controlling the media flow sent by the network side to the user terminal only includes the following information: direction information of the IP flow (for example, whether the IP flow belongs to the uplink or downlink), source IP address, destination IP address, IP protocol, source IP port, destination IP port.
  • the media streaming service can also be further expanded into a generalized Internet data service.
  • the network-side equipment of the current 5GMS system cannot distinguish data of multiple media stream service types with the same IP address and port number.
  • the network side equipment of the 5GMS system does not configure corresponding service continuity for the media stream service according to the actual service continuity requirements of the multimedia service.
  • the present application proposes a method for controlling the transmission of a media stream service performed by a user terminal, a method for controlling the transmission of a media stream service performed by a network node in a data network, A method for controlling the transmission of a media stream service performed by a network node in a core network, a method for controlling the transmission of a media stream service, a corresponding electronic device, and a non-volatile computer-readable storage medium.
  • the device on the network side and the user terminal can use the service identifier to identify the subdivision type of the media stream service, so as to realize finer QoS control of the media stream service.
  • the device on the network side and the user terminal can further divide the media stream services with the same service identifier by using the service stream type identifier, so as to realize further QoS control of the media stream service.
  • the device on the network side and the user terminal can use the service identifier to identify the subdivision type of the media stream service, and use the service stream type identifier to further perform the media stream services with the same service identifier. division, so as to achieve more fine-grained quality of service (QoS) control over media streaming services.
  • QoS quality of service
  • the network node of the data network may negotiate the service specifier of the media stream service with the network node of the core network (CN), so that when both the data network and the core network know/agree , so that the network side equipment can control the quality of service (QoS) of the media stream service more finely.
  • QoS quality of service
  • the user terminal by receiving the policy template with the continuity feature from the device on the network side, the user terminal can use the appropriate continuity feature when initiating or changing the service of the media stream. PDU session to carry the service of the media stream. Therefore, the user terminal can realize the continuity control of the media streaming service when the user terminal moves.
  • the network side device cannot configure the corresponding service continuity for the media stream service of a specific type of the user terminal according to the actual service continuity requirement of the multimedia service.
  • the network node of the data network (DN) can negotiate with the network node of the core network (CN) the continuity feature of at least one media stream service, so that the network side device can control the service continuity.
  • the architecture of a communication system in which embodiments of the present application may be applied is described with reference to FIG. 1 .
  • the communication system may include a 5G system, and may also include any other type of wireless communication system, such as a 6G communication system.
  • a 5G system may also include any other type of wireless communication system, such as a 6G communication system.
  • the embodiments of the present application are described by taking a 5G system as an example, but it should be appreciated that the following description can also be applied to other types of wireless communication systems.
  • Figure 1 illustrates a communication system architecture in which the methods of embodiments of the present application may be applied.
  • the UE 101 (that is, a user terminal), which may be referred to as user equipment (User Equipment, UE), may be a device that provides voice and/or data connectivity to a user.
  • the UE 101 may communicate with one or more service servers via a radio access network (Radio Access Network, RAN).
  • Radio Access Network Radio Access Network
  • the UE 101 may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, the UE 101 may be a portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile device, such as , Subscriber Unit, Subscriber Station, Mobile Station, Mobile Station, Remote Station, Access Point, Remote Terminal, Access Terminal (Access Terminal), User Device (User Terminal), User Agent (User Agent) or User Device (User Device).
  • a mobile terminal such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal
  • the UE 101 may be a portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile device, such as , Subscriber Unit, Subscriber Station, Mobile Station, Mobile Station, Remote Station, Access Point, Remote Terminal, Access Terminal (Access Terminal), User Device (User Terminal), User Agent (User Agent) or User Device (User Device).
  • the UE 101 and the (Radio) Access Network ((R)AN) 102 (hereinafter referred to as (R)AN 102) establish a wireless connection through a wireless air interface.
  • the wireless air interface is a wireless air interface based on a 5G standard, for example, the wireless air interface is NR; or, the wireless air interface can also be a wireless air interface based on a next-generation mobile communication network technology standard (eg, 6G) based on 5G.
  • the access network may also include access technologies such as Wifi, Bluetooth, and satellite.
  • the UE 101 includes multiple modules or circuits to implement various functions in the 5G communication system.
  • the UE 101 includes a 5GMS client (5GMS Client) 1011 and a 5GMS Aware Application (5GMS Aware Application) 1012 .
  • the 5GMS perception application 1012 is a functional entity provided by the 5GMS application provider and installed on the UE side, which is mainly used to realize other functions (for example, the transmission of untrusted data or the media-related functions).
  • the 5GMS-aware application 1012 can interact with the 5GMS application provider 1023 on the network side through interfaces defined in the 5GMS architecture (eg, the M8 interface in FIG. 1 ), or through application programming interfaces (eg, the M6 and M7 interfaces in FIG. 1 ) ) with the 5GMS client and interact.
  • 5GMS client 1011 is another functional entity in UE 101 for controlling 5G media streaming, which can be used for downlink, uplink, or both.
  • a 5GMS client can be controlled by an internal or external media application, such as an application, which implements application or content service provider specific logic and allows media sessions to be established.
  • the 5GMS client 1011 may include a 5G media stream processing device 10112 and a 5G media session processing device 10111.
  • the 5G media session processing means 10111 may communicate with the 5GMS AF 1021 to establish, control and support the transfer of media sessions.
  • the media session processing device 10111 may expose an application program interface M6 that can be used by the 5GMS aware application 1012 and the media stream processing device 10112 .
  • the main functions of the media session processing apparatus 10111 include: session-level control of streaming media communication, collection and reporting of performance indicators, reporting of usage, provision of network auxiliary functions, configuration of media control interfaces for interacting with different UE media functions, configuration for media Media control interface for session management, and control interface configured for performance indicator collection and reporting.
  • the 5G media stream processing device 10112 can transmit media stream content, and can provide the 5GMS aware application 1012 with the API M7 for media playback, and the media session processing device 10111 with the API M7 for media stream session control. That is, the application program interface M7 can realize both the interaction with the 5GMS perception application 1012 and the interaction with the media session processing apparatus 10111 .
  • the network side of the 5GMS system may include a data network (Data Network, DN) 102 and a core network (Core Network, CN) 103 in FIG. 1 .
  • CN 103 is the core network that can be used for 5G communication.
  • CN 103 includes NEF (Network Node for Network Open Function) 1031 and PCF (Network Node for Policy and Charging Rules Function) 1032.
  • CN 103 can also support communication networks in later eras, such as 6G
  • DN 102 is a network responsible for providing data services for terminals, such as some network nodes in DN 102 that provide Internet access functions for UE 101
  • the service server, other network nodes in the DN 102 provide the service server of the short message function for the UE 101, and so on.
  • the DN 102 mainly includes a 5GMS AF (5G network node for controlling media streaming service functions) 1021 , a 5GMS AS (application server dedicated to 5G streaming media) 1022 , and a 5G application provider 1023 .
  • 5GMS AF 5G network node for controlling media streaming service functions
  • 5GMS AS application server dedicated to 5G streaming media
  • 5GMS AF 1021 is a network node in DN 102 dedicated to controlling media streaming functions. As shown in FIG. 1, for 5G media streaming service, 5GMS AF 1021 can provide media streaming session configuration information to media session processing apparatus 10111 through interface M5 to realize media streaming session processing and control, and assist in the transmission of media streaming content. For example, 5GMS AF 1021 can provide server addresses, delivery traffic reporting policies, performance index reporting policies, and configurations related to network auxiliary information. The 5GMS AF 1021 can issue information such as a policy template for controlling the media stream service function to the media session handling device 10111 through the interface M5 to control the realization of the media stream function.
  • the 5GMS AS 1022 may send or receive relevant data of the media stream service to or from the media stream processing device 10112 through the interface M4.
  • 5GMS AF 1021 can be directly connected to NEF (Network Open Function) 1031 and PCF (Policy and Charging Rules Function) 1032 of CN 103 through interfaces N5 and N33, respectively, to support functions related to network capability openness, policy and charging rules .
  • NEF Network Open Function
  • PCF Policy and Charging Rules Function
  • NEF 1031 is a network node in the 5G core network that provides frameworks, authentications and interfaces related to network capability opening, and transfers information between 5G system network functions and other network functions.
  • 5GMS AF 1021 sends the application deployment location, distribution rules, routing rules and other information to NEF through interface N33. These information are finally sent to SMF (for session management function) through network functions such as Policy Control Function (PCF). network node, not shown).
  • PCF Policy Control Function
  • SMF uses this information to select data network access identifier (DN Access Identifier, DNAI) and user plane function (User Plane Function, UPF), set distribution rules and routing rules, etc.
  • DN Access Identifier DNAI
  • UPF User Plane Function
  • PCF 1032 interacts with 5GMS AF1021 through interface N5, and its main function is to perform policy control in the 5G core network, similar to the policy and charging rules function (PCRF) network node in LTE.
  • the PCF 1032 is mainly responsible for the generation of policy authorization, service quality and charging rules, and delivers the corresponding rules to the UPF (User Plane Function) network node through the SMF network element to complete the installation of the corresponding policies and rules.
  • NEF 1031, PCF 1032, or a combination of the two, or a combination of the two and any other network node is also referred to herein as a network node in the core network.
  • FIG. 2A shows a flowchart of a method 200 performed by a user terminal for controlling media streaming service transmission, in which embodiments of the present application may be applied.
  • FIG. 2B shows a schematic diagram of a method 200 for controlling media streaming service transmission performed by a user terminal in which embodiments of the present application may be applied.
  • the methods described in FIGS. 2A and 2B may be performed by the UE 101 in FIG. 1 .
  • the UE 101 is used to perform the method 200 as an example for description.
  • step S201 the UE 101 receives, from a network node in the data network, policy template information for controlling the transmission of the media stream service and a service specifier corresponding to the policy template information, where the service specifier is used to distinguish all The media streaming services of different service types in the media streaming services described above.
  • the network node in the data network may be the 5GMS AF 1011 in FIG. 1 .
  • the module/circuit for receiving the policy template information in the UE 101 is the 5G media session processing apparatus 10111.
  • the UE 101 can also use other built-in modules or external modules to receive the policy template information.
  • Policy Template (Policy Template) information includes a set of parameters (also referred to as assets) negotiated by network nodes (NEF 1031, PCF 1032, or a combination of the two) in the core network and 5GMS AF 1011, which define The quality of service (QOS) and related billing policies of media streaming services are presented.
  • the 5GMS AF 1011 can create, acquire, update and delete related policy template resources (Policy Template Resource) in the process of negotiation with network nodes in the core network by creating a data model of the policy template.
  • Policy Template information may also be referred to as policy templates, policy template resources, policy template resource information, policy template data, and the like.
  • the naming manner of the policy template information is used as an example, but the name of the policy template information is not limited.
  • the UE 101 can use the policy template as the local configuration information of the UE 101.
  • the UE 101 does not support a user equipment routing selection policy (URSP), or the URSP is not provided, or the URSP does not contain a requirement for service continuity, use the information in the policy template to service the media stream Bind to a specific PDU session, or decide whether to initiate a new PDU session.
  • URSP defines service-level configuration and management policies, which are generated by network nodes in the core network and sent to user terminals through the network control plane.
  • the UE 101 can bind the media stream service to a specific PDU session according to the URSP, or decide whether to initiate a new PDU session. In many cases, the UE 101 may also not support or provide URSP. At this time, the UE 101 can bind the media streaming service to a specific PDU session according to the local configuration, or decide whether to initiate a new PDU session.
  • the media streaming service includes at least one type of media streaming service.
  • an application may provide different traffic with many characteristics, and each type of traffic can correspond to a type of service.
  • an application may include media streaming services for voice calls, media streaming services for text transmission, and so on.
  • it may also include media streaming services that require high QoS transmission, media streaming services that require normal QoS transmission, media streaming services that require high service continuity, and media streaming services that do not require service continuity.
  • the media streaming service can also be further expanded into a generalized Internet data service.
  • a service differentiator may be used to indicate the service type and matching characteristics of the media streaming service.
  • the service specifier is information that uses at least one of numbers, characters and symbols to describe the service type.
  • the service specifier may also be referred to as other names such as service differential symbol, service identifier, service type, etc.
  • the naming method of the service specifier is used as an example in this application, but the name of the service specifier is not limited.
  • the service specifier is used to identify the service type of the traffic in the application. That is, the service specifier is used to identify the class of data packets of the application.
  • the service specifier may be determined by negotiation between the 5GMS AF 1021 or the network nodes in the core network (NEF 1031, PCF 1032, or a combination of the two).
  • the business specifiers are usually different between different applications.
  • those skilled in the art can also understand that different application programs may also have the same service specifier.
  • the above-mentioned service specifier information includes at least one of the following items: type of service information (TOS) for the fourth version of the network protocol (IPv4), communication for the sixth version of the network protocol (IPv6) Classification information (Traffic class), flow identification information for the sixth version of the Internet Protocol (IPv6), and packet filtering direction information.
  • TOS type of service information
  • IPv4 fourth version of the network protocol
  • IPv6 communication for the sixth version of the network protocol
  • IPv6 Classification information Traffic class
  • flow identification information for the sixth version of the Internet Protocol (IPv6)
  • IPv6 packet filtering direction information
  • the TOS is a field in the IP header of the IPv4 protocol, which defines the service level of the message.
  • the TOS further includes a DSCP (differentiated services code point, differentiated services code point), which defines for the message: network control, inter-network control, critical, extreme speed, flash, fast, priority, normal, etc. priority.
  • Different DSCP values usually correspond to different types of services, for example, flash usually corresponds to the transmission of media stream data of voice, and fast usually corresponds to the transmission of media stream data of video.
  • the length of an IPv6 IP address is 128 bits, while the length of an IPv4 IP address is 32 bits. Therefore, for IPv6, more fields can be used to represent the type of media streaming service.
  • Traffic class information is a field in the IP header using the IPv6 protocol, which is used to identify the traffic flow class corresponding to IPv6, or the priority level, and its function is similar to the ToS (Type of Service) field in IPv4.
  • the flow identification information (Flow Label) is another field in the IP header using the IPv6 protocol. It can be used to mark the data flow type of the packet, so as to distinguish different packets at the network layer, so as to facilitate QoS (Quality of Service) processing for a specific service flow.
  • the packet filter direction information (Packet Filter direction) indicates whether the packet belongs to the uplink or the downlink. Thereby, different continuity services can be set for the transmission direction of the data packets.
  • the receiving the policy template information for controlling the transmission of the media stream service and the service identifier corresponding to the policy template information further includes receiving a dynamic policy resource from a network node in the data network.
  • the dynamic policy resource includes: a policy template identifier for identifying policy template information, and a flow descriptor including a service identifier corresponding to the policy template information.
  • the UE 101 may receive an improved dynamic policy resource (Dynamic Policy resource) shown in the following table from the 5GMS AF 1021, where the flow descriptor in the improved dynamic policy resource includes a service specifier.
  • Dynamic Policy resource Dynamic Policy resource
  • the flow descriptor can contain not only the service specifier, but also the IP quintuple.
  • the IP quintuple includes source IP address, source port, destination IP address, destination port and transport layer protocol.
  • the traffic specifier can also be added to the dynamic policy resource limit as a subset of the flow descriptor. Therefore, the policy template information can be associated with the service identifier through the dynamic policy resource, thereby indicating the control policy of the media stream service of at least one service type.
  • the dynamic policy resource can also store the service specifier and the policy template identifier in the form of a key-value pair to establish an association relationship between the service specifier and the policy template identifier, and further determine the service specifier and the media stream through the association relationship.
  • the relevance of business continuity characteristics can also store the service specifier and the policy template identifier in the form of a key-value pair to establish an association relationship between the service specifier and the policy template identifier, and further determine the service specifier and the media stream through the association relationship.
  • a dynamic policy resource can also construct a key-value pair with the policy template identifier as the key and the flow descriptor of the business specifier as the value.
  • a dynamic policy resource can also construct key-value pairs with the policy template identifier as the key and the business specifier as the value.
  • multiple service identifiers may correspond to one policy template identifier
  • multiple policy template identifiers may also correspond to one service identifier
  • multiple service identifiers may also correspond to multiple policy template identifiers. This application does not limit this.
  • the policy template information may also include a service identifier.
  • a service identifier For example, the type of service information (TOS) for the fourth version of the Internet protocol (IPv4), the traffic class information (Traffic class) for the sixth version of the Internet protocol (IPv6), the network Any one of the flow identification information of the protocol (IPv6) and the packet filtering direction information can be added to the policy template information, so that the service identifier is associated with the policy template information.
  • TOS type of service information
  • IPv4 the traffic class information for the sixth version of the Internet protocol
  • IPv6 the network Any one of the flow identification information of the protocol (IPv6) and the packet filtering direction information can be added to the policy template information, so that the service identifier is associated with the policy template information.
  • the policy template information may further include multiple different service identifiers, and different policy templates may also include the same service identifier. This application does not limit this.
  • the present application also provides the following examples of improved policy template information.
  • Continuity features of media streaming services are included in the improved policy template information.
  • Table 2 presents an example of the improved policy template information, which exemplarily shows a part of the parameters of the policy template.
  • SSC session and service continuity
  • Those skilled in the art will understand that other parameters may also be used to characterize the continuity characteristics of the media stream.
  • the SSC mode is sent from the 5GMS AF 1021 to the UE 101 with the policy template information in the form of an asset of the policy template resource.
  • the SSC mode is associated with a Protocol Data Unit (PDU) session and remains unchanged for the duration of the PDU session.
  • PDU Protocol Data Unit
  • the 5G network defines the following three SSC modes:
  • - SSC mode 1 The network will not change the PDU session anchor for the terminal to access the service, and ensure that the IP address remains unchanged when the UE accesses the service.
  • the network may establish a new PDU session anchor for the UE to access the service, and before the new PDU session anchor is established, the network will release the old PDU session anchor for the UE to access the service.
  • the session and service continuity mode may also be sent from the network node in the data network to the user terminal along with the policy template information in the form of parameters in the application session context in the policy template resource.
  • Table 3 gives another example of the policy template information, which exemplarily shows a part of the parameters of the policy template.
  • the service specifier is sent from the 5GMS AF 1021 to the UE 101 with the policy template information in the form of an asset of the policy template resource.
  • the SSC mode is sent from the 5GMS AF 1021 to the UE 101 with the policy template information in the form of parameters in the application session context in the policy template resource.
  • the policy template information may indicate the continuity characteristics of the media stream service of at least one type of media stream service. For example, it is assumed that a certain piece of policy template information has a policy template identifier (policyTemplateId): policyTemplateId-1.
  • policyTemplateId policyTemplateId-1
  • the service identifier included in the flow descriptor corresponding to policyTemplateId-1 is SD-1.
  • the policy template information includes the continuity feature CF1 of the media streaming service. Since the service specifier SD-1 and the continuity feature CF1 of the media streaming service are associated through the policy template identifier policyTemplateId-1, the UE 101 can infer the service specifier SD-1 and the continuity feature CF1 of the media streaming service have relevance. That is, the media stream service corresponding to the stream descriptor including the service identifier SD-1 should have the continuity feature CF1 of the media stream service.
  • policyTemplateId-1 a policy template identifier (policyTemplateId): policyTemplateId-1.
  • the policy template information includes the service distinguisher SD-1 and the continuity feature CF1 of the media stream service. Since both the service specifier SD-1 and the continuity feature CF1 of the media streaming service are located in the policy template information with the policy template identifier policyTemplateId-1, the UE 101 can infer the service specifier SD-1 and the media streaming service's The continuity feature CF1 is associated. That is, the media stream service corresponding to the service identifier SD-1 should have the continuity feature CF1 of the media stream service.
  • the policy template information may also store the service specifier and the continuity feature of the media stream service in the form of a key-value pair to establish an association relationship between the service specifier and the continuity feature of the media stream service.
  • the service specifier as the key and the continuity feature of the media streaming service as the value
  • construct the following key-value pair ⁇ service specifier SD-1, media stream service continuity feature CF1>, ⁇ service specifier SD-2, media Continuity feature of streaming service CF2>, ⁇ service specifier SD-3, continuity feature of media streaming service CF1> and so on.
  • the present application does not further limit the manner of associating the service identifier with the continuity feature of the media streaming service.
  • step S202 the UE 101 determines the service identifier of the media stream service to be initiated based on the policy template information and the service identifier.
  • the business specifier is a TOS value. It is assumed that UE 101 wishes to use the current network to carry the media streaming service of application A of the instant messaging software. After receiving the policy template information and the service identifier, the UE will be able to determine the TOS value corresponding to the media stream service for voice calls in application A and the media stream service for text transmission in application A Corresponding TOS value, so that media stream services corresponding to different service identifiers can be carried by different QoS streams. For example, the media streaming service for voice calls may be carried using a QoS flow corresponding to "flash”, and the media streaming service for text transmission may be carried using a QoS flow corresponding to "normal".
  • step S203 the UE 101 determines whether there is a protocol data unit session capable of carrying the media stream service to be initiated, wherein the protocol data unit session includes a quality of service corresponding to the service identifier of the media stream service to be initiated flow (hereinafter referred to as QoS flow).
  • QoS flow a quality of service corresponding to the service identifier of the media stream service to be initiated flow
  • the quality of service includes resource type (GBR, Delay critical GBR, or Non-GBR), priority level, packet delay budget (Packet Error Rate, PER), etc.
  • a PDU session can include one or more QoS flows.
  • the QoS flow is controlled by the network side, which can either be pre-configured or established through a PDU session establishment procedure or a PDU session modification procedure.
  • the QoS flow on it can only correspond to the TOS value corresponding to "normal".
  • the UE 101 determines that the media stream service for text transmission can be carried by the PDU session, and determines that the media stream service for the voice call cannot be carried by the PDU session.
  • the first QoS flow on it can only correspond to the TOS value corresponding to "normal”, and the second QoS flow can only correspond to the TOS value corresponding to "flash”.
  • UE 101 determines that both the media stream service for text transmission and the media stream service for voice call can be carried by the PDU session.
  • the UE 101 can also determine whether there is a protocol data unit session capable of carrying the media stream service to be initiated according to this. For example, the UE 101 can determine whether the protocol data unit session capable of carrying the media stream service to be initiated has the continuity feature of the media stream service to be initiated according to the continuity feature of the media stream service in the policy template information.
  • the policy template information indicates that all media stream services of application A need to be carried by using a PDU session with SSC mode 1. Then, when UE 101 initiates the media stream service of application A, it can determine that the continuity feature required by the media stream service of application A is SSC mode 1.
  • the policy template information and the stream descriptor together indicate that the data packet with the TOS value of x in the media streaming service of application A needs to be carried by the PDU session with SSC mode 1, and the TOS in the media streaming service of application A needs to be carried.
  • Packets with value x need to be carried using a PDU session with SSC mode 2.
  • the UE 101 initiates a media stream service whose TOS value of application A is x, it can determine that the continuity feature of the media stream service whose TOS value of application A is x is SSC mode 1.
  • the UE 101 initiates a media stream service whose TOS value of application A is y it can determine that the continuity feature of the media stream service whose TOS value of application A is y is SSC mode 2.
  • step S204 in the case that the protocol data unit session exists, the media stream service to be initiated is bound to the QoS stream in the protocol data unit session; when the protocol data unit does not exist In the case of a session, a protocol data unit session including a quality of service stream corresponding to the service identifier of the media stream service to be initiated is established.
  • the UE 101 can bind the media stream service of a certain service type to the quality of service (QoS) flow corresponding to the service specifier in the PDU session based on the service specifier.
  • QoS quality of service
  • the media stream service used for payment in the media stream service of application A can be carried by the service stream with a higher QoS level in the PDU session, and the media stream service used for traffic reporting in the media stream service of application A can be carried by using It is carried by the service flow with normal QoS level in the PDU session.
  • the media stream service with a TOS value of x in the media stream service of application A can be carried by a service stream with a higher QoS level in the PDU session, while the media stream service of application A has a media stream with a TOS value of y. Traffic can be carried using traffic flows with normal QoS levels in PDU sessions.
  • the UE 101 can further determine whether the to-be-initiated protocol data unit session meets the continuity requirements accordingly. Since the SSC mode of a PDU session does not change during its existence, the UE 101 can bind the media stream service to be initiated to a PDU session that matches the continuity characteristics of the media stream service to be initiated the PDU session, so that the PDU session can carry the to-be-initiated media stream service. Of course, if there is no PDU session that matches the continuity characteristics of the media stream service to be initiated, the UE 101 needs to establish a PDU session that meets the continuity requirements of the media stream service to be initiated (that is, a PDU session with a specific SSC mode). PDU session).
  • the UE 101 can further determine which QoS flow of which PDU session the media stream service is bound to. For example, in the case that the protocol data unit session has the continuity feature of the media stream service to be initiated, the UE 101 binds the media stream service to be initiated to the quality of service in the protocol data unit session stream on. In the case that the protocol data unit session does not have the continuity feature of the media streaming service to be initiated, the UE 101 establishes the continuity feature of the media streaming service to be initiated and includes the media streaming service to be initiated. The protocol data unit session of the quality of service flow corresponding to the service identifier of the flow service.
  • the embodiments of the present application realize that the media stream service of a specific service type can be transmitted through different QoS flows of the same PDU session, or realize that the specific service flow can be transmitted through different PDU sessions, and these different PDU sessions can be At least one of the three parameters of business continuity, network slicing, and DNN is different.
  • the UE 101 can use the PDU session with the appropriate SSC mode to carry the service of the media stream when initiating or changing the service of the media stream. Thereby, the UE 101 can realize the continuity control of the media streaming service when the movement occurs.
  • the problem in the prior art that the data network cannot configure the service continuity corresponding to the media stream service to the user terminal is solved.
  • the user terminal 101 may also receive at least one service identifier from a network node in the core network, where the service identifier is used to distinguish different service types in the media streaming service. media streaming service. Then, based on the at least one service identifier, the user terminal determines a service identifier corresponding to a media stream service of one service type in the media stream services to be initiated, and based on the service identifier, converts the media stream of the service type to the service identifier.
  • Flow traffic is bound to a Quality of Service (QoS) flow in the PDU session corresponding to the traffic specifier.
  • QoS Quality of Service
  • the service identifier can be delivered to the user terminal 101 from the PCF 1032 through the URSP.
  • the service specifier can be determined through 5GMS AF1021 and NEF/PCF negotiation.
  • the URSP generated at the PCF includes the service specifier negotiated between the 5GMS AF 1021 and the NEF/PCF.
  • the user terminal can also receive the continuity feature of the media stream service from the network node in the core network; based on the continuity feature, determine the media stream service to be initiated.
  • the continuity feature based on the continuity feature, the media stream service is bound to the PDU session with the continuity feature.
  • the SSC mode can also be delivered from the PCF 1032 to the user terminal 101 through the URSP.
  • the SSC mode can be determined through 5GMS AF 1021 and NEF/PCF negotiation.
  • the URSP generated at the PCF includes the SSC mode determined by the 5GMS AF 1021 and NEF/PCF negotiation.
  • the user terminal 101 can also receive both the service specifier and the SSC mode from the network node in the core network.
  • UE 101 can use a PDU session with appropriate SSC mode to carry a media stream of a specific service type business. Thereby, the UE 101 can realize the continuity control of a certain type of media streaming service when the movement occurs. This solves the problem in the prior art that the data network cannot configure the service continuity corresponding to a certain type of media stream service to the user terminal.
  • Figure 3A shows a flow diagram of a method 3010 of controlling the transmission of media streaming services performed by a network node in a data network.
  • FIG. 3B shows a schematic diagram of a method 3010 for controlling media streaming service transmission performed by a network node in a data network in which embodiments of the present application may be applied.
  • Figure 3C shows a flowchart of a method 3020 of controlling the transmission of media streaming services performed by a network node in a data network.
  • Figure 3D shows a schematic diagram of a method 3020 for controlling media streaming service transmission performed by a network node in a data network in which embodiments of the present application may be applied.
  • Method 3010 and method 3020 may be performed by 5GMS AF 1021 in FIG. 1 . The following takes the 5GMS AF 1021 to perform the method 3010 and the method 3020 as an example for description.
  • the method 3010 includes steps S3011-S3014.
  • step S3011 the 5GMS AF 1021 sends a service flow type identifier of the media stream service to a network node (eg, NEF 1031 or PCF 1032, or a combination of the two) in the core network, and the service flow type identifier is used for Describe the media streaming services of different functions in the media streaming services.
  • a network node eg, NEF 1031 or PCF 1032, or a combination of the two
  • the network nodes in the core network include network nodes for controlling network opening functions (e.g. NEF 1031) or network nodes for controlling network policy and charging rules functions (e.g. PCF 1032) or a combination of both.
  • network opening functions e.g. NEF 1031
  • network policy and charging rules functions e.g. PCF 1032
  • the above-mentioned service stream type identifier is used to describe the media stream service of different functions in the media stream service.
  • the service stream type identifier may also indicate the characteristics of the media stream service type.
  • the service stream type indicator may indicate that a certain media stream service is one of the following items: media plane data, network auxiliary information, usage reporting information, and so on. Therefore, the service streams of media streams that implement different functions can be distinguished by service stream type identifiers. Since media stream services of different service stream types can be carried by service streams with different QoS (Quality of Service), the 5G core network node can indicate to 5GMS AF 1021 according to the service stream type identifier that different media stream service types need to have business specifier. Therefore, the service flow of a specific service type can be transmitted by different QoS flows of the same PDU session by setting the service identifier negotiated by the network; or the specific service flow can be transmitted by having different PDU sessions.
  • QoS Quality of Service
  • the 5GMS AF 1021 may also send other service requirements and related information related to the media streaming service to a network node (eg, NEF 1031, PCF 1032, or both) in the core network (eg, CN 103), To assist the network nodes in the core network CN 103 to set a more accurate network policy for the media streaming service according to the requirements put forward by the 5GMS AF1021, which is more in line with the network agreement signed by the user and the core network (that is, the 5GMS AF 1021 Policy template subsequently issued to UE 101).
  • a network node eg, NEF 1031, PCF 1032, or both
  • the core network eg, CN 103
  • the 5GMS AF 1021 may also send the identification information of the 5GMS AF 1021, the identification information of the 5GMS application provider 1023, the QoS (Quality of Service) requirement information, the network slice requirement information and the like to the network node in the core network.
  • This application does not limit the information sent by the 5GMS AF 1021 to the network nodes in the core network, as long as it can help the core network and the 5GMS AF to negotiate a policy for service transmission.
  • the 5GMS AF 1021 may also send the continuity requirement of at least one media streaming service to a network node (eg, NEF 1031 or PCF 1032, or a combination of the two) in the core network.
  • a network node eg, NEF 1031 or PCF 1032, or a combination of the two
  • the at least one media stream service corresponds to a service type of at least one media stream. Therefore, the 5GMS AF 1021 sends the continuity requirements of the service type of at least one media stream to a network node (eg, NEF 1031 or PCF 1032, or a combination of the two) in the core network.
  • the continuity requirement of at least one media streaming service may be described in various ways.
  • the continuity requirement of at least one media stream service can be described in text: "This service needs to ensure service continuity with the UE's IP address unchanged", "The UE's IP address can be changed during the execution of this service but the service is not interrupted" Wait.
  • the continuity requirement of at least one media streaming service can also be directly described by an indicator of the SSC mode (for example, if SSC mode 1 is adopted, the indicator “1” can be directly used), which indicates that the media streaming service requires Some kind of SSC mode. This application does not limit the form of continuity requirements.
  • network nodes in the core network can set service continuity characteristics (eg, SSC mode) for the media streaming service according to the requirements proposed by 5GMS AF1021.
  • service continuity characteristics eg, SSC mode
  • the network node in the core network may also determine corresponding different service continuity features (eg SSC modes) for different media stream service types in the media stream service.
  • a specific media stream service may correspond to multiple service stream types (eg, media stream services with different functions).
  • service stream types eg, media stream services with different functions.
  • a video media streaming session it includes data transmission of upstream video media streaming services, data transmission of downstream video media streaming services, control data transmission of upstream video media streaming services, and control data transmission of downstream video media streaming services, etc.
  • Different business flow types may also correspond to different business continuity characteristics.
  • a service identifier corresponding to the media stream service is received from a network node in the core network, wherein the service identifier is used to distinguish media stream services of different service types in the media stream service, And the service identifier corresponds to the service flow type identifier.
  • the network node in the core network will determine its corresponding service identifier for the service flow type identifier based on its network policy or local configuration information. Therefore, it can be ensured that the configuration of the service specifier on the service server side (for example, 5GMS AF1021) is consistent with the configuration on the user plane and the URSP in the CN 103.
  • the service server side for example, 5GMS AF1021
  • the 5GMS AF 1021 can also send the continuity requirement of at least one media stream service to a network node in the core network, and the 5GMS AF 1021 can also receive the service specifier (and and/or the continuity feature of the media stream service type corresponding to the service stream type identifier).
  • the network node in the core network will determine the service specifier corresponding to the service flow type identifier based on local configuration and network policy. Then return the service specifier and the continuity feature corresponding to the service specifier to the 5GMS AF 1021.
  • step S3013 the 5GMS AF 1021 determines policy template information corresponding to the service identifier and used to control the transmission of the media stream service.
  • the 5GMS AF1021 may determine policy template information for controlling the transmission of the media stream service according to the information received from the network node in the core network.
  • the network node in the core network sends the service identifier, SSC mode and service flow type identifier in Table 4 below to the 5GMS AF1021, and the information in the same row represents a set of association relationships.
  • 5GMS AF1021 can populate the policy template information according to the above information. For example, policy template information and/or dynamic policy resource information for usage reporting data. For example, 5GMS AF can determine the policy template information shown in Table 5 below:
  • 5GMS AF1021 can also fill in the policy template information according to the above information.
  • the 5GMS AF 1021 can determine the policy template information shown in Table 6 below:
  • PolicyTemplateId Policy Template Identifier
  • SSC mode Session and business continuity (SSC mode)
  • SSC Mode 1 stream descriptor stream descriptor which includes the service specifier SD1 ... ...
  • step S3014 the 5GMS AF1021 sends the policy template information and the service identifier to the user terminal.
  • the 5GMS AF 1021 can negotiate the service identifier with the network node of the core network through the service stream type identifier, so as to realize finer QoS control of the media stream service.
  • the 5GMS AF 1021 can negotiate the continuity feature of at least one media stream service with the network node of the core network, so that the network side can control the service continuity when transmitting the media stream service according to the service requirements.
  • the policy template can be used as the local configuration information of the UE.
  • the information in the policy template is used as the basis to bind the media stream service to a specific PDU session, or to decide whether to initiate a new PDU session.
  • service streams of media streams with different functions can be distinguished by service identifiers. Since media stream services of different service stream types can be carried by service streams with different QoS (Quality of Service), the 5G core network node can indicate to the 5GMS AF 1021 the required media stream service types corresponding to different service stream type identifiers business specifier. Thereby, the service flow of a specific service type can be transmitted by different QoS flows of the same PDU session by setting the service identifier negotiated by the network; or the specific service flow can be transmitted by having different PDU sessions.
  • QoS Quality of Service
  • the method 3020 includes steps S3021-S3024.
  • step S3021 the 5GMS AF 1021 sends the to-be-confirmed service identifier of the media stream service to the network node in the core network, where the service identifier is used to distinguish media of different service types in the media stream service streaming business.
  • the 5GMS AF 1021 can locally look up the service type of at least one media stream corresponding to the media stream service, and send the media stream to a network node in the core network (for example, NEF 1031, or PCF 1032, or a combination of the two)
  • the service identifier of at least one media stream service corresponding to the service can also determine at least one media stream corresponding to the media stream service according to a network protocol or agreement related to the media stream service
  • the business specifier of the business type.
  • the above-mentioned service identifier information includes at least one of the following items: type of service information (TOS) for the fourth version of the network protocol (IPv4), communication classification information (Traffic) for the sixth version of the network protocol (IPv6). class), flow identification information for the sixth version of the Internet Protocol (IPv6), and packet filtering direction information.
  • TOS type of service information
  • IPv4 fourth version of the network protocol
  • Traffic classification information
  • IPv6 sixth version of the network protocol
  • IPv6 sixth version of the network protocol
  • IPv6 sixth version of the network protocol
  • IPv6 sixth version of the Internet Protocol
  • packet filtering direction information packet filtering direction information
  • the different service specifiers mentioned herein refer to the Type of Service (TOS) information for the fourth version of the Internet protocol (IPv4) or the communication for the sixth version of the Internet protocol (IPv6) included in the service specifier Any one of classification information (Traffic class), or flow identification information for the sixth version of the Internet Protocol (IPv6), or packet filtering direction information is different.
  • TOS Type of Service
  • the 5GMS AF 1021 may also send other service requirements and related information related to the media streaming service to a network node (eg, NEF 1031, PCF 1032, or both) in the core network (eg, CN 103), To assist the network nodes in the core network CN 103 to set a more accurate network policy for the media streaming service according to the requirements put forward by the 5GMS AF1021, which is more in line with the network agreement signed by the user and the core network (that is, the 5GMS AF 1021 Policy template subsequently issued to UE 101).
  • a network node eg, NEF 1031, PCF 1032, or both
  • the core network eg, CN 103
  • the 5GMS AF 1021 may also send the identification information of the 5GMS AF 1021, the identification information of the 5GMS application provider 1023, the QoS (Quality of Service) requirement information, the network slice requirement information and the like to the network node in the core network.
  • This application does not limit the information sent by the 5GMS AF 1021 to the network nodes in the core network, as long as it can help the core network and the 5GMS AF to negotiate a policy for service transmission.
  • step S3022 the 5GMS AF 1021 receives the confirmed service identifier of the media stream service from the network node in the core network.
  • the network nodes in the core network CN 103 will check whether the service specifier complies with its network policy or local configuration information. If so, the network node in the core network can confirm the service identifier corresponding to the at least one media stream service type, and return it to the 5GMS AF 1021. If not, the network node in the core network can modify or update the service specifier sent by the 5GMS AF 1021 based on the network policy or local configuration information, and return it to the 5GMS AF 1021.
  • step S3023 the 5GMS AF 1021 determines the policy template information corresponding to the confirmed service identifier and used to control the transmission of the media stream service.
  • step S3024 the 5GMS AF 1021 sends the policy template information and the service specifier to the user terminal.
  • the method 3020 also realizes that the service streams of different functions and types of media streams can be distinguished by service specifiers. Since media stream services with different service specifiers can be carried by service streams with different QoS (Quality of Service), the 5G core network node can indicate to the 5GMS AF 1021 the different service specifiers that different media stream service types need to have. . Thereby, the service flow of a specific service type can be transmitted by different QoS flows of the same PDU session by setting the service identifier negotiated by the network; or the specific service flow can be transmitted by having different PDU sessions.
  • QoS Quality of Service
  • the embodiments of the present application also provide a method for controlling media stream service transmission performed by a network node in a data network.
  • the method includes: sending a continuity requirement of at least one media stream service to a network node in a core network; receiving a continuity feature of the media stream service from a network node in the core network; determining a continuity feature for controlling the media stream Policy template information for service transmission, where the policy template information includes the continuity feature of the media stream service; the policy template information for controlling the media stream service transmission is sent to the user terminal.
  • Figure 4A shows a flowchart of a method 4010 of controlling the transmission of media streaming services performed by a network node in a data network.
  • Figure 4B shows a flowchart of a method 4020 of controlling media streaming service transmission performed by a network node in a data network.
  • NEF 1031, PCF 1032 in Figure 1 may be performed by NEF 1031, PCF 1032 in Figure 1, or a combination of the two.
  • NEF 1031, PCF 1032, or a combination of the two may also be referred to as network nodes in the core network.
  • the method 4010 includes steps S4011 to S4013.
  • step S4011 the network node in the core network CN 103 receives the service flow type identifier of the media stream service from the network node in the data network, and the service stream type identifier is used to describe the different functions in the media stream service. media streaming business.
  • the service flow type identifier indicates a characteristic of the at least one media flow service type or a functional characteristic of the media flow service.
  • the service stream type indicator may indicate that a certain media stream service is one of the following items: media plane data, network auxiliary information, usage reporting information, and so on.
  • the continuity requirement for at least one media streaming service is received from a network node in the data network.
  • the at least one media stream service may also correspond to a service type of at least one media stream.
  • the network node in the core network CN 103 can set the corresponding service continuity characteristics (such as SSC mode) for the media stream service according to the service continuity requirements related to the media stream service proposed by 5GMS AF1021, and according to the set The service continuity feature sets the corresponding rate for the media streaming service.
  • the network node in the core network determines the service identifier of the media stream service based on the service stream type identifier of the media stream service and the network policy or local configuration information of the network node in the core network , the service identifier is used to distinguish media stream services of different service types in the media stream service.
  • the 5GMS AF 1021 can locally look up at least one service type corresponding to the service flow type identifier of the media stream service, and report to the network node (for example, NEF 1031, or PCF 1032, or a combination of the two) in the core network CN 103. Send the service identifier corresponding to the media stream service.
  • the network node for example, NEF 1031, or PCF 1032, or a combination of the two
  • the network node (for example, NEF 1031, or PCF 1032, or the combination of the two) in the core network CN 103 can also determine the corresponding media stream service according to the network protocol signed with the user related to the media stream service. business specifier.
  • the above-mentioned service identifier information includes at least one of the following items: type of service information (TOS) for the fourth version of the network protocol (IPv4), communication classification information (Traffic) for the sixth version of the network protocol (IPv6). class), flow identification information for the sixth version of the Internet Protocol (IPv6), and packet filtering direction information.
  • TOS type of service information
  • IPv4 fourth version of the network protocol
  • Traffic classification information
  • IPv6 sixth version of the network protocol
  • IPv6 sixth version of the network protocol
  • IPv6 sixth version of the network protocol
  • IPv6 sixth version of the Internet Protocol
  • packet filtering direction information packet filtering direction information
  • the different service specifiers mentioned in this paper refer to the type of service information (TOS) for the fourth version of the Internet protocol (IPv4), the communication classification for the sixth version of the Internet protocol (IPv6) included in the service specifier Information (Traffic class), flow identification information for the sixth version of the network protocol (IPv6), and packet filtering direction information are different.
  • TOS type of service information
  • IPv6 communication classification for the sixth version of the Internet protocol
  • Traffic class the service specifier Information
  • flow identification information for the sixth version of the network protocol (IPv6) IPv6
  • packet filtering direction information packet filtering direction information
  • the network node in the core network will determine at least one service specifier corresponding to the media stream service type based on its network policy or local configuration information. Therefore, it can be ensured that the configuration of the service identifier on the service server side (for example, 5GMS AF1021), the URSP rules sent to the UE on the network side, and the configuration of the user plane on the core network CN 103 are consistent.
  • the service server side for example, 5GMS AF1021
  • the URSP rules sent to the UE on the network side and the configuration of the user plane on the core network CN 103 are consistent.
  • the 5G core network network node can assign a specific service identifier to the data flow of the service type according to the service flow type identifier, so as to indicate to the 5GMS AF 1021 the service identifiers corresponding to different service flow type identifiers.
  • the service server can set a specific service identifier for the service flow of a specific service type, and the service flow of a specific service type can be transmitted through different QoS flows of the same PDU session, or the service flow of a specific service type can be transmitted. It is transmitted through different PDU sessions for refined QoS guarantee.
  • the network node in the core network CN 103 will look up the agreement it signed with the user, and if it is found that the user has not paid for the service of the specific continuity, the core network The network CN 103 will reject the requirement of the 5GMS AF 1021 and only set basic business continuity for the service of this media stream.
  • the network node in the core network can determine the continuity feature of the media stream service (or at least corresponding to one type of media stream service) based on the service stream type identifier and the continuity requirement of the media stream service. That is, the network node in the core network can indicate the continuity characteristic of at least one media stream service type by associating the service specifier with the continuity characteristic.
  • the network node in the core network can set the SSC mode shown in Table 6 below according to the continuity requirement and service flow type identifier of at least one media stream service sent by 5GMS AF1021, and according to its local network policy or configuration information , the corresponding relationship between the service identifier and the service flow type identifier.
  • the information in the same row in Table 6 represents a set of associations.
  • step S4013 the network node in the core network sends the service identifier of the media stream service to the network node in the data network.
  • the network node in the core network can feed back the association relationship in Table 6 to the 5GMS AF1021.
  • Table 6 can also be delivered to the user terminal 101 from the PCF 1032 through the URSP.
  • the URSP generated by the PCF includes the service specifier negotiated between the 5GMS AF 1021 and the NEF/PCF.
  • the 5GMS AF 1021 can negotiate with the network node of the core network for at least one service identifier of the media stream service, thereby realizing finer QoS control of the media stream service.
  • the UE 101 can use the PDU session with the appropriate SSC mode to carry the media stream when initiating or changing the service of the media stream. business. Thereby, the UE 101 can realize the continuity control of the media stream service when initiating or changing the media stream service.
  • the policy template can be used as the local configuration information of the UE.
  • the information in the policy template is used as the basis to bind the media stream service to a specific PDU session, or to decide whether to initiate a new PDU session. This solves the problem that the network side device in the prior art cannot determine the service continuity of the service according to the needs of the service provider.
  • the method 4020 includes steps S4021 to S4023.
  • the network node in the core network receives the to-be-confirmed service identifier of the media stream service from the network node in the data network, and the service identifier is used to distinguish different service types in the media stream service. media streaming business.
  • the network nodes in the core network include a network node for controlling network opening functions and a network node for controlling network policy and charging rule functions.
  • the service identifier information includes at least one of the following items: type of service information (TOS) for the fourth version of the network protocol (IPv4), communication classification information for the sixth version of the network protocol (IPv6) (Traffic class), flow identification information for the sixth version of the network protocol (IPv6), packet filtering direction information.
  • TOS type of service information
  • IPv4 communication classification information for the sixth version of the network protocol
  • IPv6 Traffic class
  • IPv6 packet filtering direction information.
  • step 4022 in the case that the to-be-confirmed service identifier of the media streaming service matches the network policy or local configuration information of the network node in the core network, the network node in the core network assigns the media
  • the to-be-confirmed service specifier of the streaming service is confirmed as the service specifier of the media streaming service; the to-be-confirmed service specifier of the media streaming service and the network policy or local configuration information of the network node in the core network
  • the network node in the core network confirms the service specifier that matches the network policy or local configuration information of the network node in the core network as the service specifier of the media streaming service.
  • step 4023 the network node in the core network sends the service identifier of the media stream service to the network node in the data network.
  • the network node in the core network may also receive the service identifier of the media stream service from the network node in the data network; and determine the media stream service based on the service identifier of the media stream service and the local configuration.
  • the service identifier of the media stream service is sent to the user terminal.
  • the service identifier can be delivered to the user terminal 101 from the PCF 1032 through the URSP.
  • the URSP generated at the PCF includes the service specifier negotiated between the 5GMS AF 1021 and the NEF/PCF.
  • Embodiments of the present application also provide a method for controlling media stream service transmission performed by a network node in a core network.
  • the method includes: receiving a continuity requirement of at least one media stream service from a network node in a data network; determining a continuity feature of the at least one media stream service based on the continuity requirement of the at least one media stream service;
  • the network node in the data network sends the continuity characteristics of the at least one media stream service.
  • the service continuity feature can be delivered from the PCF 1032 to the user terminal 101 through the URSP.
  • the business continuity feature is the SSC mode.
  • the URSP generated by the PCF includes the SSC mode negotiated between the 5GMS AF 1021 and the NEF/PCF.
  • FIG. 5A shows a schematic diagram of a method 50100 of controlling media streaming service transmission performed by the communication system of FIG. 1 .
  • FIG. 5B shows a schematic diagram of a method 50200 of controlling media streaming service transmission performed by the communication system of FIG. 1 .
  • NEF 1031, PCF 1032, or a combination of the two may also be referred to as network nodes in the core network.
  • the method 50100 includes steps S50101 to S50111.
  • step S50101 from the network node in the data network to the network node in the core network, the service flow type identifier of the media stream service, where the service stream type identifier is used to describe the media streams of different functions in the media stream service business.
  • step S50102 the service flow type identifier of the media flow service is received by the network node in the core network from the network node in the data network.
  • step S50103 the service distinction of the media stream service is determined by the network node in the core network based on the service stream type identifier of the media stream service and the network policy or local configuration information of the network node in the core network
  • the service identifier is used to distinguish media stream services of different service types in the media stream services.
  • step S50104 the service identifier of the media stream service is sent by the network node in the core network to the network node in the data network.
  • step S50105 the service identifier corresponding to the media stream service is received by the network node in the data network from the network node in the core network.
  • step S50106 the network node in the data network determines the policy template information corresponding to the service identifier and used to control the transmission of the media stream service.
  • the policy template information includes a set of parameters negotiated by the network nodes in the core network CN 103 and the 5GMS AF 1011.
  • the 5GMS AF 1011 can create, acquire, update and delete related policy template resources (Policy Template Resource) in the process of negotiation with network nodes in the core network by creating a data model of the policy template.
  • Policy Template Resource Policy Template Resource
  • policy template information may also be referred to as policy templates, policy template resources, policy template resource information, policy template data, and the like.
  • the naming manner of the policy template information is used as an example, but the name of the policy template information is not limited.
  • the policy template information further includes a service differentiator, where the service differentiator indicates a media stream service type.
  • the policy template information indicates a session policy of at least one media stream service type by associating the service identifier with a policy in the policy template.
  • the policy template information indicates an attribute of a PDU session of at least one media stream service type by associating the service identifier with an existing network feature.
  • policyTemplateId-1 a policy template identifier (policyTemplateId): policyTemplateId-1.
  • the policy template information includes the service distinguisher SD-1 and the continuity feature CF1 of the media stream service. Since both the service specifier SD-1 and the continuity feature CF1 of the media streaming service are located in the policy template information with the policy template identifier policyTemplateId-1, the UE 101 can infer the service specifier SD-1 and the media streaming service's The continuity feature CF1 is associated.
  • the media stream service corresponding to the stream descriptor including the service identifier SD-1 should have the continuity feature CF1 of the media stream service.
  • the dynamic policy resource can also store the service specifier and the policy template identifier in the form of a key-value pair to establish an association relationship between the service specifier and the policy template identifier, and further determine the service specifier and the media stream through the association relationship.
  • the relevance of business continuity characteristics For example, use the flow descriptor of the service specifier as the key and the policy template identifier as the value to construct the following key-value pair: ⁇ flow descriptor of the service specifier SD-1, policy template identifier policyTemplateId-1>, ⁇ service specifier SD -2 flow descriptor, policy template identifier policyTemplateId-2>, ⁇ flow descriptor of service distinguisher SD-3, policy template identifier policyTemplateId-3> and so on.
  • a dynamic policy resource can also construct a key-value pair with the policy template identifier as the key and the flow descriptor of the business specifier as the value.
  • a dynamic policy resource can also construct key-value pairs with the policy template identifier as the key and the business specifier as the value.
  • This application does not further limit the manner of associating the service distinguisher with the policy template identifier.
  • the SSC mode can be used to characterize the session and service continuity characteristics of the media stream. Those skilled in the art will understand that other parameters may also be used to characterize the continuity characteristics of the media stream. Specifically, the SSC mode is associated with a Protocol Data Unit (PDU) session and remains unchanged for the duration of the PDU session.
  • PDU Protocol Data Unit
  • step S50107 the network node in the data network sends the policy template information and the service identifier to the user terminal.
  • step S50108 the user terminal receives policy template information for controlling the transmission of the media stream service and a service identifier corresponding to the policy template information from a network node in the data network.
  • step S50109 the user terminal determines the service identifier of the media stream service to be initiated based on the policy template information and the service identifier.
  • step S50110 the user terminal determines whether there is a protocol data unit session capable of carrying the media stream service to be initiated, wherein the protocol data unit session includes a service identifier corresponding to the media stream service to be initiated quality of service flow.
  • step S50111 in the presence of the protocol data unit session, the user terminal binds the media stream service to be initiated to the quality of service stream in the protocol data unit session; in the absence of the In the case of a protocol data unit session, a protocol data unit session including a quality of service stream corresponding to the service identifier of the media stream service to be initiated is established by the user terminal.
  • the method 50200 includes steps S50201 to S50211.
  • the method 50200 includes steps S50201 to S50211.
  • step S50201 the network node in the data network sends the to-be-confirmed service identifier of the media stream service to the network node in the core network, wherein the service identifier is used to distinguish different media stream services Service type media streaming service.
  • step S50202 the service identifier to be confirmed of the media stream service is received by the network node in the core network from the network node in the data network.
  • step S50203 in the case that the to-be-confirmed service identifier of the media stream service matches the network policy or local configuration information of the network node in the core network, the network node in the core network assigns the The service specifier of the media stream service to be confirmed is confirmed as the service specifier of the media stream service.
  • the network node in the core network will The service specifier that matches the network policy or local configuration information of the network node is identified as the service specifier of the media streaming service.
  • step S50204 the network node in the core network sends the service identifier of the media stream service to the network node in the data network.
  • step S50205 the service identifier corresponding to the media stream service is received by the network node in the data network from the network node in the core network.
  • step S50206 the network node in the data network determines policy template information corresponding to the service identifier and used to control the transmission of the media stream service.
  • step S50207 the network node in the data network sends the policy template information and the service identifier to the user terminal.
  • step S50208 the user terminal receives policy template information for controlling the transmission of the media stream service and a service identifier corresponding to the policy template information from the network node in the data network.
  • step S50209 the user terminal determines the service identifier of the media stream service to be initiated based on the policy template information and the service identifier.
  • step S50210 the user terminal determines whether there is a protocol data unit session capable of carrying the media stream service to be initiated, wherein the protocol data unit session includes a service identifier corresponding to the media stream service to be initiated quality of service flow.
  • step S50211 in the presence of the protocol data unit session, the user terminal binds the media stream service to be initiated to the quality of service stream in the protocol data unit session; in the absence of the In the case of a protocol data unit session, a protocol data unit session including a quality of service stream corresponding to the service identifier of the media stream service to be initiated is established by the user terminal.
  • the device on the network side and the user terminal can also use the service identifier to identify the subdivision type of the media stream service, and use the service stream type identifier to further perform further processing on the media stream services with the same service identifier. Division, so as to achieve more fine-grained QoS control and service continuity control for media streaming services.
  • the UE 101 can bind the media stream service to be initiated to a PDU session that matches the continuity characteristics of the media stream service to be initiated the PDU session, so that the PDU session can carry the to-be-initiated media stream service.
  • the UE 101 needs to establish a PDU session that meets the continuity requirements of the media stream service to be initiated (that is, a PDU session with a specific SSC mode). PDU session).
  • the user terminal can also receive a policy template with continuity characteristics from the device on the network side, and the user terminal can use a PDU session with suitable continuity characteristics to carry the media stream when moving. Business. Therefore, the user terminal can realize the continuity control of the media streaming service when moving. This solves the problem in the prior art that the network side device cannot configure the service continuity corresponding to the media stream service to the user terminal.
  • the network node of the data network can also negotiate with the network node of the core network (CN) the continuity feature of at least one media stream service, so that the network side can Service continuity can be controlled when transmitting media stream services.
  • the present application also provides a method for controlling the transmission of media stream services, which includes: sending, by a network node in a data network, a continuity requirement of at least one media stream service to a network node in a core network; The network node determines the continuity characteristics of the media stream service based on the continuity requirements of the media stream service; the network node in the core network sends the continuity of the media stream service to the network node in the data network.
  • the policy template information used to control the transmission of the media stream service is determined by the network node in the data network, and the policy template information includes the continuity feature of the media stream service; the network node in the data network reports to the user terminal Sending policy template information for controlling the transmission of the media stream service; the user terminal determines the continuity feature of the media stream service to be initiated based on the media stream service to be initiated and the policy template information; the user terminal determines the continuity feature of the media stream service to be initiated; The terminal determines whether there is a protocol data unit session capable of carrying the media stream service to be initiated, wherein the protocol data unit session has the continuity feature of the media stream service to be initiated; when the protocol data unit session exists In the case that the media stream service to be initiated is bound to the protocol data unit session by the user terminal; in the case that the protocol data unit session does not exist, the user terminal establishes a media stream service with the to-be-initiated media stream The protocol data unit session for the continuity feature of streaming services.
  • FIG. 6 shows the architecture of an electronic device 600 according to an embodiment of the present application.
  • a device for example, a terminal, a network node, etc.
  • FIG. 6 shows the architecture of the computing device.
  • computing device 600 may include a bus 610, one or more CPUs 620, read only memory (ROM) 630, random access memory (RAM) 640, a communication port 650 connected to a network, input/output components 660, hard disk 670, etc.
  • Storage devices in computing device 600 such as ROM 630 or hard disk 660, may store various data or files used for computer processing and/or communications and program instructions executed by the CPU.
  • Computing device 600 may also include user interface 680 .
  • the architecture shown in FIG. 6 is only exemplary, and when implementing different devices, one or more components in the computing device shown in FIG. 6 may be omitted according to actual needs.
  • Embodiments of the present disclosure can also be implemented as non-volatile computer-readable storage media.
  • Computer-readable instructions are stored on a non-volatile computer-readable storage medium according to an embodiment of the present application. When the computer-readable instructions are executed by a processor, the methods according to the embodiments of the present application described with reference to the above figures may be performed.
  • the non-volatile computer-readable storage medium includes, but is not limited to, for example, volatile memory and/or non-volatile memory.
  • the volatile memory may include, for example, random access memory (RAM) and/or cache memory, or the like.
  • the non-volatile memory may include, for example, read only memory (ROM), hard disk, flash memory, and the like.
  • Embodiments of the present application may also be implemented as a computer program product or computer program comprising computer instructions stored in a non-transitory computer readable storage medium.
  • the processor of the computer device reads the computer instructions from the computer-readable medium, and the processor executes the computer instructions to cause the computer device to perform the methods provided in the various aspects described above or in various optional implementations of the various aspects described above.
  • words like “comprising” or “comprising” mean that the elements or things appearing before the word encompass the elements or things recited after the word and their equivalents, but do not exclude other elements or things. Words like “connected” or “connected” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

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Abstract

本申请实施例提供了一种控制媒体流业务传输的方法，一种控制媒体流业务传输的用户终端、数据网络中的网络节点以及核心网络中的网络节点，一种控制媒体流业务传输的系统，一种非易失性计算机可读存储介质、以及一种电子设备。其中，一种控制媒体流业务传输的方法，包括：从数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。

Description

控制媒体流业务传输的方法、用户终端、网络节点、系统、存储介质及电子设备
本申请要求于2020年9月30日提交中国专利局、申请号为202011059198.2、申请名称为“控制媒体流业务传输的方法及电子设备”的中国专利申请的优先权。
技术领域
本申请涉及无线通信领域，并且更具体地涉及一种控制媒体流业务传输的方法，一种控制媒体流业务传输的用户终端、数据网络中的网络节点以及核心网络中的网络节点，一种控制媒体流业务传输的系统，一种非易失性计算机可读存储介质、以及一种电子设备。
发明背景
相对于传统的通信系统，5G系统提供了许多新的特性，比如具有高比特率和低延迟的移动宽带连接，网络切片，分布式和移动边缘计算等，可以提升音视频流服务的质量和效率，并且可以提供传统2D视频以外的新型服务(例如虚拟现实和混合现实)，这在技术和商业上都提供了新的机遇。
目前，5G媒体流架构(5GMSA)提供更简单和模块化的设计，使得第三方内容服务提供商、广播公司和移动网络运营商能在不同程度上进行合作。其重点是利用能力开放(capability exposure)的概念，给外部服务提供商提供与5G网络和设备功能交互的简单方式，并使用5G提供的功能来提供更好的媒体服务。
目前的第三代合作伙伴项目技术规范(Third Generation Partnership Project Technical Specification，3GPP TS)中，为媒体流的传输提供了5G媒体流系统(5GMS)。5GMS系统是5G媒体流架构的应用功能、应用服务器、终端设备和接口的集合，其支持下行媒体流服务或上行媒体流服务或两者兼有。为协议数据单元(PDU)会话设置了不同的连续性模式，以向不同的PDU会话提供不同的连续性。
然而，当前的5GMS系统对媒体流数据流的传输控制仍不够精细。比如，当前5GMS系统的网络侧设备不能区分具备相同IP地址和端口号的多个媒体流业务数据。并且在当前5GMS系统的网络侧设备和应用服务器的交互过程中，并未考虑到不同类型的媒体流业务的连续性需求，因此无法实现业务连续性需求的交互和协商。
发明内容
为了克服现有技术中存在的缺陷，本申请提出了一种由用户终端执行的、控制媒体流业务传输的方法、一种由数据网络中的网络节点执行的、控制媒体流业务传输的方法、一种由核心网络中的网络节点执行的、控制媒体流业务传输的方法、一种控制媒体流业务传输的方法、以及相应的电子设备、非易失性计算机可读存储介质。
本申请的实施例提供了一种由用户终端执行的、控制媒体流业务传输的方法。该方法包括：从数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发 起的媒体流业务的业务区分符对应的服务质量流；在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。该策略模板信息可以看成是用户终端的一种本地策略。
本申请的实施例提供了一种由数据网络中的网络节点执行的、控制媒体流业务传输的方法。该方法包括：向核心网络中的网络节点发送所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务，并且所述业务区分符与所述业务流类型符相对应；确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；向用户终端发送所述策略模板信息以及所述业务区分符。
本申请的实施例提供了一种由数据网络中的网络节点执行的、控制媒体流业务传输的方法。该方法包括：向核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；从所述核心网络中的网络节点接收所述媒体流业务的确认后的业务区分符；确定与所述确认后的业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；向用户终端发送所述策略模板信息以及所述业务区分符。
本申请的实施例提供了一种由核心网络中的网络节点执行的、控制媒体流业务传输的方法，包括：从数据网络中的网络节点接收所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；基于所述媒体流业务的业务流类型符、以及所述核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
本申请的实施例提供了一种由核心网络中的网络节点执行的、控制媒体流业务传输的方法，包括：从数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符；在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符；向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
本申请的实施例提供了一种控制媒体流业务传输的方法。该方法包括：由数据网络中的网络节点向核心网络中的网络节点所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；由所述核心网络中的网络节点从所述数据网络中的网络节点接收所述媒体流业务的业务流类型符；由所述核心网络中的网络节点基于所述媒体流业务的业务流类型符、以及所述核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；由所述核心网络中的网络节点向所述数据网络中的网络节点发送所述媒体流业务的业务区分符；由所述数据网络中的网络节点从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符；由所述数据网络中的网络节点确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；由所述数据网络中的网络节点向用户终端发送所述策略模板信息以及所述业务区分符；由所述用户终端从所述数据网络中的网络节点，接收所述策略模板信息以及所述业务区分符；由所述用户终端基于所 述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；由所述用户终端确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；在存在所述协议数据单元会话的情况下，由所述用户终端将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；在不存在所述协议数单元会话的情况下，由所述用户终端建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
本申请的实施例提供了一种控制媒体流业务传输的方法。该方法包括：由数据网络中的网络节点向核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；由所述核心网络中的网络节点从所述数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符；在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，由所述核心网络中的网络节点将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符；在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，由所述核心网络中的网络节点将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符；由所述核心网络中的网络节点向所述数据网络中的网络节点发送所述媒体流业务的业务区分符；由所述数据网络中的网络节点从所述核心网络中的网络节点接收所述媒体流业务的业务区分符；由所述数据网络中的网络节点确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；由所述数据网络中的网络节点向所述用户终端发送所述策略模板信息以及所述业务区分符；由所述用户终端从所述数据网络中的网络节点，接收所述策略模板信息以及所述业务区分符；由所述用户终端基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；由所述用户终端确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；在存在所述协议数据单元会话的情况下，由所述用户终端将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；在不存在所述协议数据单元会话的情况下，由所述用户终端建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
本申请的实施例提供了一种非易失性计算机可读存储介质，其上存储有计算机指令，该计算机指令被处理器执行时实现上述方法。
根据本申请的另一方面，提供了一种计算机程序产品或计算机程序，该计算机程序产品或计算机程序包括计算机指令，该计算机指令存储在非易失性计算机可读存储介质中。计算机设备的处理器从计算机可读介质读取该计算机指令，处理器执行该计算机指令，使得该计算机设备执行上述各个方面或者上述各个方面的各种可选实现方式中提供的方法。
本申请的实施例提供了一种电子设备，包括：处理器；以及存储器，其中，所述存储器中存储有计算机可执行程序，当由所述处理器执行所述计算机可执行程序时，执行上述的方法。
本申请的实施例提供了一种由控制媒体流业务传输的用户终端，包括：存储器；和一个或多个处理器，可操作地被耦合到所述存储器，所述存储器和所述一个或多个处理器被配置为：从数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒 体流业务的业务区分符对应的服务质量流；在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
本申请的实施例提供了一种由控制媒体流业务传输的用户终端，包括：接收单元，被配置为：从数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；第一确定单元，被配置为：基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；第二确定单元，被配置为：确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；会话单元，被配置为：在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
本申请的实施例提供了一种由控制媒体流业务传输的数据网络中的网络节点，包括：存储器；和一个或多个处理器，可操作地被耦合到所述存储器，所述存储器和所述一个或多个处理器被配置为：向核心网络中的网络节点发送所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务，并且所述业务区分符与所述业务流类型符相对应；确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；向用户终端发送所述策略模板信息以及所述业务区分符。
本申请的实施例提供了一种由控制媒体流业务传输的数据网络中的网络节点，包括：第一发送单元，被配置为：向核心网络中的网络节点发送所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；接收单元，被配置为：从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务，并且所述业务区分符与所述业务流类型符相对应；确定单元，被配置为：确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；第二发送单元，被配置为：向用户终端发送所述策略模板信息以及所述业务区分符。
本申请的实施例提供了一种控制媒体流业务传输的数据网络中的网络节点，包括：存储器；和一个或多个处理器，可操作地被耦合到所述存储器，所述存储器和所述一个或多个处理器被配置为：向核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；从所述核心网络中的网络节点接收所述媒体流业务的确认后的业务区分符；确定与所述确认后的业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；向用户终端发送所述策略模板信息以及所述业务区分符。
本申请的实施例提供了一种控制媒体流业务传输的数据网络中的网络节点，包括：第一发送单元，被配置为：向核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；接收单元，被配置为：从所述核心网络中的网络节点接收所述媒体流业务的确认后的业务区分符；确定单元，被配置为：确定与所述确认后的业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；第二发送单元，被配置为：向用户终端发送所述策略模板信息以及所述业务区分符。
本申请的实施例提供了一种控制媒体流业务传输的核心网络中的网络节点，包括：存储器；和一个或多个处理器，可操作地被耦合到所述存储器，所述存储器和所述一个或多个处理器被配置为： 从数据网络中的网络节点接收所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；基于所述媒体流业务的业务流类型符、以及所述核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
本申请的实施例提供了一种控制媒体流业务传输的核心网络中的网络节点，包括：接收单元，被配置为：从数据网络中的网络节点接收所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；确定单元，被配置为：基于所述媒体流业务的业务流类型符、以及所述核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；发送单元，被配置为：向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
本申请的实施例提供了一种控制媒体流业务传输的核心网络中的网络节点，包括：存储器；和一个或多个处理器，可操作地被耦合到所述存储器，所述存储器和所述一个或多个处理器被配置为：从数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符；在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符；向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
本申请的实施例提供了一种控制媒体流业务传输的核心网络中的网络节点，包括：接收单元，被配置为：从数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；确认单元，被配置为：在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符；在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符；发送单元，被配置为：向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
本申请的实施例提供了一种控制媒体流业务传输的系统，包括用户终端、数据网络中的网络节点和核心网络中的网络节点，其中：所述数据网络中的网络节点，被配置为：向所述核心网络中的网络节点发送所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务，并且所述业务区分符与所述业务流类型符相对应；确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；向用户终端发送所述策略模板信息以及所述业务区分符；所述核心网络中的网络节点，被配置为：从所述数据网络中的网络节点接收所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；基于所述媒体流业务的业务流类型符、以及所述核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；向所述数据网络中的网络节点发送 所述媒体流业务的业务区分符；所述用户终端，被配置为：从所述数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
本申请的实施例提供了一种控制媒体流业务传输的系统，包括用户终端、数据网络中的网络节点和核心网络中的网络节点，其中：所述数据网络中的网络节点，被配置为：向所述核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；从所述核心网络中的网络节点接收所述媒体流业务的确认后的业务区分符；确定与所述确认后的业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；向用户终端发送所述策略模板信息以及所述业务区分符；所述核心网络中的网络节点，被配置为：从所述数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符；在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符；向所述数据网络中的网络节点发送所述媒体流业务的业务区分符；所述用户终端被配置为：从所述数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
在本申请的实施例中，通过从网络侧的设备接收到带有连续性特征的策略模板，用户终端可以在发起或变更媒体流的业务的时候，能够使用具备合适连续性特征的PDU会话来承载该媒体流的业务。由此，使得用户终端能够在发生移动时能够实现该媒体流业务的连续性控制。由此解决了现有技术中移动网络侧设备无法根据业务的实际需求为用户终端特定的类型的媒体流业务配置对应的业务连续性的问题。
附图简要说明
通过结合附图对本申请实施例进行更详细的描述，本申请的上述以及其它目的、特征和优势将变得更加明显。附图用来提供对本申请实施例的进一步理解，并且构成说明书的一部分，与本申请实施例一起用于解释本申请，并不构成对本申请的限制。在附图中，相同的参考标号通常代表相同部件或步骤。
图1示出了可在其中应用本申请的实施例的通信系统的一种架构。
图2A示出了根据本申请的实施例的可在其中应用本申请的实施例的由用户终端执行的、控制媒体流业务传输的方法的流程图。
图2B示出了根据本申请的实施例的可在其中应用本申请的实施例的由用户终端执行的、控制媒体流业务传输的方法的示意图。
图3A示出了根据本申请的实施例的由数据网络中的网络节点执行的、控制媒体流业务传输的方法的流程图。
图3B示出了根据本申请的实施例的可在其中应用本申请的实施例的由数据网络中的网络节点执行的、控制媒体流业务传输的方法的示意图。
图3C示出了根据本申请的实施例的由数据网络中的网络节点执行的、控制媒体流业务传输的方法的流程图。
图3D示出了根据本申请的实施例的可在其中应用本申请的实施例的由数据网络中的网络节点执行的、控制媒体流业务传输的方法的示意图。
图4A示出了根据本申请的实施例的由数据网络中的网络节点执行的、控制媒体流业务传输的方法的流程图。
图4B示出了根据本申请的实施例的由数据网络中的网络节点执行的、控制媒体流业务传输的方法的流程图。
图5A示出了由通信系统执行的、控制媒体流业务传输的方法的示意图。
图5B示出了由通信系统执行的、控制媒体流业务传输的方法的示意图。
图6示出了根据本申请的实施例的电子设备的架构。
实施方式
为了使得本申请的目的、技术方案和优点更为明显，下面将参照附图详细描述根据本申请的示例实施例。在附图中，相同的参考标号自始至终表示相同的元件。应当理解：这里描述的实施例仅仅是说明性的，而不应被解释为限制本申请的范围。
在当前的5GMS系统中，网络侧设备向用户终端发送的控制媒体流业务的策略并没有考虑到媒体流的业务连续性问题。同时，网络侧向用户终端发送的、与控制媒体流的策略相关的流描述符中也仅包括以下信息：IP流的方向信息(例如，IP流是属于上行链路还是下行链路)、源IP地址、目的地IP地址、IP协议、源IP端口、目的地IP端口。媒体流业务也可以进一步扩展为广义的互联网数据业务。
因此，当前5GMS系统的网络侧设备不能区分具备相同IP地址和端口号的多个媒体流业务类型的数据。并且在当前5GMS系统的网络侧设备和用户终端的交互过程中，5GMS系统的网络侧设备并未根据多媒体业务的实际的业务连续性需求来为媒体流业务配置可对应的业务连续性。
为了克服现有技术中存在的缺陷，本申请提出了一种由用户终端执行的、控制媒体流业务传输的方法、一种由数据网络中的网络节点执行的、控制媒体流业务传输的方法、一种由核心网络中的网络节点执行的、控制媒体流业务传输的方法、一种控制媒体流业务传输的方法、以及相应的电子设备、非易失性计算机可读存储介质。
在本申请的实施例中，网络侧的设备和用户终端可以利用业务区分符来标识媒体流业务的细分类型，从而实现对媒体流业务更精细的QoS控制。在本申请的进一步实施例中，网络侧的设备和用户终端还可以使用业务流类型符对具备相同的业务区分符的媒体流业务进行进一步划分，从而实 现对媒体流业务进一步的QoS控制。
在本申请的实施例中，网络侧的设备和用户终端可以利用业务区分符来标识媒体流业务的细分类型，并使用业务流类型区分符对具备相同的业务区分符的媒体流业务进行进一步划分，从而实现对媒体流业务更精细的服务质量(QoS)控制。
在本申请的实施例中，数据网络(DN)的网络节点可以和核心网(CN)的网络节点协商媒体流业务的业务区分符，从而在数据网络和核心网络均知晓/达成一致的情况下，实现网络侧设备能够对媒体流业务更精细的服务质量(QoS)控制。
此外，在本申请的进一步的实施例中，通过从网络侧的设备接收到带有连续性特征的策略模板，用户终端可以在发起或变更媒体流的业务的时候，能够使用具备合适连续性特征的PDU会话来承载该媒体流的业务。由此，使得用户终端能够在发生移动时能够实现该媒体流业务的连续性控制。由此解决了现有技术中网络侧设备无法根据多媒体业务的实际的业务连续性需求向用户终端特定的类型的媒体流业务配置相应的业务连续性的问题。同时，数据网络(DN)的网络节点可以和核心网(CN)的网络节点协商至少一个媒体流业务的连续性特征，从而实现网络侧设备能够对业务连续性进行控制。
参照图1来描述可在其中应用本申请的实施例的通信系统的架构。该通信系统可以包括5G系统，也可以包括任何其他类型的无线通信系统，比如6G通信系统等。在下文中，以5G系统为例来描述本申请的实施例，但应当认识到，以下描述也可以适用于其他类型的无线通信系统。
图1示出了可在其中应用本申请的实施例的方法的通信系统架构。
以下简要描述图1中的各个实体。
UE 101(也即用户终端)，可称为用户设备(User Equipment，UE)，其可以是指向用户提供语音和/或数据连通性的设备。UE 101可以经无线接入网(Radio Access Network，RAN)与一个或多个业务服务器进行通信。UE 101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，UE 101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，例如，订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户装置(User Terminal)、用户代理(User Agent)或用户设备(User Device)。
UE 101和(无线)接入网络((Radio)Access Network，(R)AN)102(以下记为(R)AN 102)通过无线空口建立无线连接。可选地，该无线空口是基于5G标准的无线空口，比如该无线空口是NR；或者，该无线空口也可以是基于5G的更下一代移动通信网络技术标准(例如，6G)的无线空口。接入网络除了无线接入网络之外，也可以包含Wifi，蓝牙，卫星等接入技术。
如图1所示，UE 101中包括多个模块或电路来实现5G通信系统中的各种功能。UE 101中包括5GMS客户端(5GMS Client)1011和5GMS感知应用(5GMS Aware Application)1012。
其中，5GMS感知应用1012是由5GMS应用程序提供商提供的、安装在UE侧的一种功能实体，其主要用于实现5GMS客户端1011以外的其它功能(例如，非可信数据的传输或者非媒体相关功能)。5GMS感知应用1012可以通过5GMS体系结构中定义的接口(例如，图1中的M8接口)与网络侧的5GMS应用提供者1023交互，或者通过应用程序接口(例如，图1中的M6和M7接口)与5GMS客户端和交互。
5GMS客户端1011是UE 101中的另一种用于控制5G媒体流传输的功能实体，其可以用于下行链路、上行链路、或这两者。5GMS客户端可以由内部或外部媒体应用程序控制，例如应用程序，它实现应用程序或内容服务提供商特定的逻辑，并允许建立媒体会话。5GMS客户端1011可以包 括5G媒体流处理装置10112和5G媒体会话处理装置10111。
5G媒体会话处理装置10111可以与5GMS AF 1021通信，以便建立、控制和支持媒体会话的传送。媒体会话处理装置10111可以提供(expose)可由5GMS感知应用1012和媒体流处理装置10112使用的应用程序接口M6。媒体会话处理装置10111主要功能包括：流媒体通信的会话级别的控制、性能指标的收集和上报、用量上报、提供网络辅助功能、配置与不同的UE媒体功能交互的媒体控制接口、配置用于媒体会话管理的媒体控制接口、以及配置用于性能指标收集和上报的控制接口等。
5G媒体流处理装置10112可以传输媒体流内容，并可向5GMS感知应用1012提供用于媒体播放的应用程序接口M7，以及向媒体会话处理装置10111提供用于媒体流会话控制的应用程序接口M7。也即应用程序接口M7既可以实现与5GMS感知应用1012的交互，又可以实现与媒体会话处理装置10111的交互。
5GMS系统的网络侧可以包括图1中的数据网络(Data Network，DN)102和核心网(Core Network，CN)103。CN 103是可以用于5G通信的核心网。CN 103包括NEF(用于网络开放功能的网络节点)1031和PCF(用于策略与计费规则功能的网络节点)1032。本领域技术人员应当理解，CN 103还可以支持更后时代的通信网络，例如6G，DN 102是负责为终端提供数据服务的网络，如DN 102中的一些网络节点是为UE 101提供上网功能的业务服务器，DN 102中的另一些网络节点为UE 101提供短信功能的业务服务器等等。DN 102中主要包括5GMS AF(用于控制媒体流业务功能的5G网络节点)1021、5GMS AS(5G流媒体专有的应用服务器)1022、和5G应用提供者1023。
5GMS AF 1021是DN 102中专用于控制媒体流功能的网络节点。如图1所述，对于5G媒体流业务来说，5GMS AF 1021可以通过接口M5向媒体会话处理装置10111提供媒体流会话配置信息以实现媒体流会话处理和控制，并辅助媒体流内容的传输。比如，5GMS AF 1021可以提供服务器地址、下发流量上报策略、性能指标上报策略、网络辅助信息相关的配置等。5GMS AF 1021可以通过接口M5来向媒体会话处置装置10111来下发控制媒体流业务功能的策略模板等信息，来控制媒体流功能的实现。5GMS AS 1022可以通过接口M4来向媒体流处理装置10112发送或从媒体流处理装置10112接收媒体流业务的相关数据。5GMS AF 1021可以分别通过接口N5和N33来与CN 103的NEF(网络开放功能)1031和PCF(策略与计费规则功能)1032直接相连，来支持网络能力开放、策略与计费规则相关的功能。
NEF 1031是5G核心网中用于提供网络能力开放相关的框架、鉴权和接口，在5G系统网络功能和其他网络功能之间传递信息的网络节点。5GMS AF 1021通过接口N33将应用的部署位置、分流规则、路由规则等信息发送给NEF，这些信息经过策略控制功能(Policy Control Function，PCF)等网络功能最终发送给SMF(用于会话管理功能的网络节点，未示出)。SMF利用这些信息选择数据网络接入标示符(DN Access Identifier，DNAI)和用户面功能(User Plane Function，UPF)、设置分流规则和路由规则等。
PCF 1032通过接口N5与5GMS AF1021交互，其主要功能是执行5G核心网中的策略控制，类似于LTE中的策略与计费规则功能(policy and charging rules function，PCRF)网络节点。PCF 1032主要负责策略授权、服务质量以及计费规则的生成，并将相应规则通过SMF网元下发至UPF(用户面功能)网络节点，完成相应策略及规则的安装。NEF 1031、PCF 1032、或二者的结合、或二者与其他任意一个网络节点的结合在本文中又称为核心网络中的网络节点。
图2A示出了可在其中应用本申请的实施例的由用户终端执行的、控制媒体流业务传输的方法200的流程图。图2B示出了可在其中应用本申请的实施例的由用户终端执行的、控制媒体流业务传输的方法200的示意图。图2A和图2B所描述的方法可以由图1中的UE 101来执行。以下以 UE 101来执行方法200为例来进行说明。
在步骤S201中，UE 101从数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务。
可选地，如图2B所示，数据网络中的网络节点可以是图1中的5GMS AF 1011。UE 101中用于接收策略模板信息的模块/电路为5G媒体会话处理装置10111。当然，本领域技术人员还可以理解，UE 101也可以使用其他内置模块或外置模块来接收策略模板信息。
策略模板(Policy Template)信息包括由核心网络中的网络节点(NEF 1031、PCF 1032、或二者的结合)与5GMS AF 1011进行协商的一组参数(又可被称为资产)，这些参数定义了媒体流业务的服务质量(QOS)和相关计费策略。5GMS AF 1011可以通过创建策略模板的数据模型来在与核心网络中的网络节点的协商的过程中创建、获取、更新和删除相关的策略模板资源(Policy Template Resource)。由此策略模板信息还可被称为策略模板、策略模板资源、策略模板资源信息、策略模板数据等。本申请中以策略模板信息的命名方式来举例说明，但对策略模板信息的名称不加以限定。
特别的，在接收到该策略模板后，UE 101可以将该策略模板作为UE 101的本地配置信息。当UE 101不支持路由选择策略(user equipment routing selection policy，URSP)、或未被提供URSP、或URSP中没有包含对业务连续性的要求时，以该策略模板中的信息来将该媒体流业务绑定到特定的PDU会话，或决定是否发起新的PDU会话。URSP定义了业务级别的配置和管理策略，由核心网中的网络节点生成并通过网络控制面发送给用户终端。
通常情况下，在UE 101支持且被提供了URSP时，UE 101可以根据URSP将媒体流业务绑定到特定的PDU会话，或决定是否发起新的PDU会话。而在很多情况下，UE 101也可能不支持或未被提供URSP。此时，UE 101可以根据本地配置来把该媒体流业务绑定到特定的PDU会话，或决定是否发起新的PDU会话。
可选地，所述媒体流业务包括至少一种业务类型的媒体流业务。例如，一个应用程序可能提供有很多特性的不同流量，每一种特性的流量可以对应于一种业务类型。例如，对于即时通软件，其可以包括用于语音通话的媒体流业务、用于文字传输的媒体流业务等等。或者，对于即时通软件，其还可以包括需要使用高服务质量传输的媒体流业务、普通服务质量传输的媒体流业务、对业务连续性要求高的媒体流业务、对业务连续没有要求的媒体流业务。媒体流业务也可以进一步扩展为广义的互联网数据业务。
可选地，可以使用业务区分符(Service Differentiator)来指示媒体流业务的业务类型和匹配特征。可选地，媒体流的业务类型与业务区分符一一对应。业务区分符是采用数字、字符和符号中的至少一种来对业务类型进行描述的信息。该业务区分符还可称为：业务差分符、业务标识、业务类型等其它名称，本申请中以业务区分符的命名方式来举例说明，但对业务区分符的名称不加以限定。该业务区分符用于标识应用程序中的流量的业务类型。也即，业务区分符用于标识应用程序的数据包的类别。业务区分符可以由5GMS AF 1021或核心网络中的网络节点(NEF 1031、PCF 1032、或二者的结合)协商来确定。在不同的应用程序之间，业务区分符通常是不同的。当然本领域技术人员也可以理解，不同的应用程序也可以具有相同的业务区分符。
可选地，上述的业务区分符信息包括以下各项中的至少一项：针对第四版本的网络协议(IPv4)的服务类型信息(TOS)、针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、针对第六版本的网络协议(IPv6)的流标识信息、数据包过滤方向信息。
TOS是采用IPv4协议的IP报头中一个字段，其定义了该报文的服务等级。可选地，TOS还包括DSCP(differentiated services code point，差分服务代码点)，其为该报文定义了：网络控制、网间控制、关键、极速、闪速、快速、优先、普通等不同的优先级。不同DSCP值通常对应不同类型的业务，例如闪速通常对应于语音的媒体流数据的传输、快速通常对应于视频的媒体流数据的传输。IPv6的IP地址的长度为128位，而IPv4的IP地址的长度为32位，因此针对IPv6，可以使用更多的字段来表征媒体流业务的类型。通信分类信息(Traffic class)是采用IPv6协议的IP报头中一个字段，用来标识对应IPv6的通信流类别，或者说是优先级别，其功能类似于IPv4中的ToS(服务类型)字段。流标识信息(Flow Label)是采用IPv6协议的IP报头中另一个字段。其可用来标记报文的数据流类型，以便在网络层区分不同的报文，以便于针对特定的业务流进行QoS(质量服务)处理。数据包过滤方向信息(Packet Filter direction)指示该数据包属于上行链路还是下行链路。由此，可以针对数据包的传输方向设置不同的连续性服务。
可选地，所述接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符还包括从数据网络中的网络节点，接收动态策略资源。其中，所述动态策略资源包括：用于标识策略模板信息的策略模板标识符、和包括所述策略模板信息对应的业务区分符的流描述符。
例如，UE 101可以从5GMS AF 1021接收如下表所示的改进的动态策略资源(Dynamic Policy resource)，该改进的动态策略资源中的流描述符中包括业务区分符。
表1-改进的动态策略资源
Figure PCTCN2021119239-appb-000001
如上所示，流描述符不仅可以包含业务区分符，还可以包括IP五元组。IP五元组包括源IP地址、源端口、目的IP地址、目的端口和传输层协议。例如，业务区分符还可以作为流描述符的子集而被添加至动态策略资源限制中。由此，策略模板信息可以通过动态策略资源与业务区分符相关联，进而指示至少一种业务类型的媒体流业务的控制策略。
或者，动态策略资源中还可以以键值对的方式存储业务区分符和策略模板标识符以建立业务区分符和策略模板标识符的关联关系，并通过该关联关系进一步确定业务区分符和媒体流业务的连续性特征的关联性。例如，以业务区分符的流描述符为键，以策略模板标识符为值构建如下键值对：<业务区分符SD-1对应的流描述符，策略模板标识符policyTemplateId-1>，<业务区分符SD-2对应的流描述符，策略模板标识符policyTemplateId-2>，<业务区分符SD-3对应的流描述符，策略模板标识符policyTemplateId-3>等等。例如，动态策略资源还可以以策略模板标识符为键，以业务区分符的流描述符为值构建键值对。例如，动态策略资源还可以以策略模板标识符为键，以业务区分符为值构建键值对。
本申请不对将业务区分符和策略模板标识符相关联的方式进行进一步的限定。可选地，多个业 务区分符可以对应一个策略模板标识符，多个策略模板标识符也可以对应一个业务区分符，多个业务区分符也可以对应多个策略模板标识符。本申请对此不进行限制。
可选地，所述策略模板信息也可以包括业务区分符。例如，业务区分符中的针对第四版本的网络协议(IPv4)的服务类型信息(TOS)、针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、针对第六版本的网络协议(IPv6)的流标识信息、数据包过滤方向信息中的任意一项可以被添加至策略模板信息中，进而使得业务区分符与策略模板信息相关联。
可选地，所述策略模板信息还可以包括多个不同的业务区分符，不同的策略模板也可以包括相同的业务区分符。本申请对此不进行限制。
为了实现对对业务连续性进行控制，本申请还提供以下改进的策略模板信息的示例。在改进的策略模板信息中包括媒体流业务的连续性特征。示意性地，表2给出改进的策略模板信息的一个示例，其示例性地示出了策略模板的一部分参数。在本申请的实施例中，使用会话和业务连续性(SSC)模式来表征媒体流业务的连续性特征。本领域技术人员应当理解还可以使用其他参数来表征媒体流的连续性特征。
表2-策略模板信息
Figure PCTCN2021119239-appb-000002
在表2中，SSC模式以策略模板资源的资产的形式，随着策略模板信息从5GMS AF1021发送至UE 101。
具体地，SSC模式与协议数据单元(PDU)会话关联，并在PDU会话存续期间保持不变。5G网络定义了如下三种SSC模式：
- SSC模式1：网络不会改变该终端访问该业务的PDU会话锚点，并保障UE访问该业务时IP地址保持不变。
- SSC模式2：网络可能会为该UE访问该业务建立新的PDU会话锚点，并在新的PDU会 话锚点建立之前，网络会释放该UE访问该业务的旧的PDU会话锚点。
- SSC模式3：网络会在新的PDU会话锚点建立之后再释放之前的PDU会话锚点，从而可以保证业务的连续性。
可选地，所述会话和业务连续性模式还可以以策略模板资源中的应用会话上下文中参数的形式，随着策略模板信息从数据网络中的网络节点发送至所述用户终端。
示意性地，表3给出策略模板信息的另一个示例，其示例性地示出了策略模板的一部分参数。在表3中，业务区分符以策略模板资源的资产的形式，随着策略模板信息从5GMS AF1021发送至UE 101。SSC模式以策略模板资源中的应用会话上下文中参数的形式，随着策略模板信息从5GMS AF1021发送至UE 101。
表3-策略模板信息
Figure PCTCN2021119239-appb-000003
通过动态策略资源与业务区分符相关联，策略模板信息可以指示至少一种媒体流业务类型的媒体流业务的连续性特征。例如，假设某条策略模板信息具有策略模板标识符(policyTemplateId)：policyTemplateId-1。在动态策略资源中，policyTemplateId-1对应的流描述符中包括的业务区分符为SD-1。在该策略模板信息中包括媒体流业务的连续性特征CF1。由于业务区分符SD-1和媒体流业务的连续性特征CF1通过策略模板标识符policyTemplateId-1进行了关联，因此，UE 101可以推断出业务区分符SD-1和媒体流业务的连续性特征CF1具备关联性。也即，对应于包含该业务区分符SD-1的流描述符对应的媒体流业务应当具备媒体流业务的连续性特征CF1。
例如，假设某条策略模板信息具有策略模板标识符(policyTemplateId)：policyTemplateId-1。在该策略模板信息中包括业务区分符SD-1和媒体流业务的连续性特征CF1。由于业务区分符SD-1和媒体流业务的连续性特征CF1均位于具有策略模板标识符policyTemplateId-1的策略模板信息中，因此，UE 101可以推断出业务区分符SD-1和媒体流业务的连续性特征CF1具备关联性。也即，对 应于业务区分符SD-1的媒体流业务应当具备媒体流业务的连续性特征CF1。
或者，策略模板信息中还可以以键值对的方式存储业务区分符和媒体流业务的连续性特征以建立业务区分符和媒体流业务的连续性特征的关联关系。例如，以业务区分符为键，以媒体流业务的连续性特征为值构建如下键值对：<业务区分符SD-1，媒体流业务的连续性特征CF1>，<业务区分符SD-2，媒体流业务的连续性特征CF2>，<业务区分符SD-3，媒体流业务的连续性特征CF1>等等。本申请不对将业务区分符和媒体流业务的连续性特征相关联的方式进行进一步的限定。
在步骤S202中，UE 101基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符。
例如，假设业务区分符为TOS值。假设UE 101希望利用当前网络来承载即时通讯软件的应用A的媒体流业务。在接收到所述策略模板信息和所述业务区分符后，UE将能够判断应用A中的用于语音通话的媒体流业务对应的TOS值、以及应用A中的用于文字传输的媒体流业务对应的TOS值，以便于将不同业务区分符对应的媒体流业务使用不同的QoS流来承载。例如，可以将用于语音通话的媒体流业务使用与“闪速”相对应的QoS流来承载，并使用与“普通”相对应的QoS流来承载用于文字传输的媒体流业务。
在步骤S203中，UE 101确定是否存在能够承载待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流(以下称为QoS流)。
服务质量包括资源类型(GBR、Delay critical GBR、或Non-GBR)、优先级水平、包时延预算(Packet Error Rate，PER)等。在5GS内，一个PDU会话可以包括一个或多个QoS流。QoS流由网络侧控制，其既可以预先配置，也可以通过PDU会话建立流程或PDU会话修改流程建立。
假设UE 101当前仅建立了一个PDU会话，其上的QoS流仅能够对应于与“普通”相对应TOS值。此时，UE 101确定用于文字传输的媒体流业务可以由该PDU会话来承载，并确定用于语音通话的媒体流业务不能由该PDU会话来承载。
假设UE 101当前仅存在一个PDU会话，其上的第一QoS流仅能够对应于与“普通”相对应TOS值，和第二QoS流仅能够对应于与“闪速”相对应TOS值。此时，UE 101确定用于文字传输的媒体流业务和用于语音通话的媒体流业务都能由该PDU会话来承载。
此外，如果策略模板信息包括所述媒体流业务的连续性特征，则UE 101还可以据此来确定是否存在能够承载待发起的媒体流业务的协议数据单元会话。例如，UE 101可以根据策略模板信息中的媒体流业务的连续性特征，来确定能够承载待发起的媒体流业务的协议数据单元会话是否具备所述待发起的媒体流业务的连续性特征。
例如，假设策略模板信息指示应用A的媒体流业务均需要使用具备SSC模式1的PDU会话来进行承载。那么UE 101在发起应用A的媒体流业务时，可以确定应用A的媒体流业务要求的连续性特征为SSC模式1。
例如，假设策略模板信息和流描述符共同指示应用A的媒体流业务中的TOS值为x的数据包需要使用具备SSC模式1的PDU会话来进行承载，而应用A的媒体流业务中的TOS值为x的数据包需要使用具备SSC模式2的PDU会话来进行承载。那么UE 101在发起应用A的TOS值为x的媒体流业务时，可以确定应用A的TOS值为x的媒体流业务的连续性特征为SSC模式1。那么UE 101在发起应用A的TOS值为y的媒体流业务时，可以确定应用A的TOS值为y的媒体流业务的连续性特征为SSC模式2。
在步骤S204中，在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到 所述协议数据单元会话中的服务质量流上；在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
由此，UE 101可以基于业务区分符，将某一特定业务类型的媒体流业务绑定到PDU会话中与业务区分符相对应的服务质量(QoS)流上。
例如，应用A的媒体流业务中用于支付的媒体流业务可以使用PDU会话中具有较高QoS级别的业务流来承载，而应用A的媒体流业务中用于流量上报的媒体流业务可以使用PDU会话中具有普通QoS级别的业务流来承载。或者，应用A的媒体流业务中使用TOS值为x的媒体流业务可以使用PDU会话中具有较高QoS级别的业务流来承载，而应用A的媒体流业务中具有TOS值为y的媒体流业务可以使用PDU会话中具有普通QoS级别的业务流来承载。
此外，如果策略模板信息包括所述媒体流业务的连续性特征，并且UE 101可以据此进一步确定待发起协议数据单元会话是否符合连续性要求。由于一个PDU会话的SSC模式在其存续期间不变，因此在存在与待发起的媒体流业务的连续性特征相匹配的PDU会话的情况下，UE 101可以将待发起的媒体流业务绑定到该PDU会话，从而使得该PDU会话能够承载该待发起的媒体流业务。当然，如果不存在待发起的媒体流业务的连续性特征相匹配的PDU会话的情况下，UE 101需要建立符合待发起的媒体流业务的连续性要求的PDU会话(也即具备特定SSC模式的PDU会话)。
结合所述媒体流业务的连续性特征和业务区分符，UE 101可以进一步确定将媒体流业务绑定在哪个PDU会话的哪个QoS流上。例如，在所述协议数据单元会话具备所述待发起的媒体流业务的连续性特征的情况下，UE 101将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上。在所述协议数据单元会话不具备所述待发起的媒体流业务的连续性特征的情况下，UE 101建立具备所述待发起的媒体流业务的连续性特征且包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
本申请的实施例实现特定的业务类型的媒体流业务能够通过同一个PDU会话的不同的QoS流来传输，或者实现特定的业务流能够通过不同的PDU会话来传输，这些不同的PDU会话可以是业务连续性、网络切片、DNN三个参数中至少有一个参数不相同。
通过从5GMS AF 1021接收到带有SSC模式的策略模板，UE 101可以在发起或变更媒体流的业务的时候，能够使用具备合适SSC模式的PDU会话来承载该媒体流的业务。由此，使得UE 101能够在发生移动之时能够实现对该媒体流业务的连续性控制。由此解决了现有技术中数据网络无法向用户终端配置媒体流业务对应的业务连续性的问题。
可选地，在用户终端101支持URSP的情况下，用户终端还可以从核心网络中的网络节点，接收至少一个业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务。然后用户终端基于所述至少一个业务区分符，确定待发起的媒体流业务中的一种业务类型的媒体流业务对应的业务区分符，并基于所述业务区分符，将所述业务类型的媒体流业务绑定到所述PDU会话中与所述业务区分符相对应的服务质量(QoS)流。
例如，该业务区分符可以通过URSP从PCF 1032中下发至用户终端101。可以经过5GMS AF1021和NEF/PCF协商来确定业务区分符。在PCF生成的URSP包括5GMS AF 1021和NEF/PCF协商确定的业务区分符。
可选地，在用户终端支持URSP的情况下，用户终端还可以从核心网络中的网络节点，接收所述媒体流业务的连续性特征；基于所述连续性特征，确定待发起的媒体流业务的连续性特征；基于所述连续性特征，将所述媒体流业务绑定到具有该连续性特征的所述PDU会话上。
例如，在业务连续性特征为SSC模式时，SSC模式也可以通过URSP从PCF 1032中下发至用 户终端101。可以经过5GMS AF 1021和NEF/PCF协商来确定SSC模式。在PCF生成的URSP包括5GMS AF 1021和NEF/PCF协商确定的SSC模式。
当然，在用户终端101支持URSP的情况下，用户终端还可以从核心网络中的网络节点，接收业务区分符和SSC模式这两者。
如果从5GMS AF 1021既接收到带有SSC模式的策略模板又接收到与该策略模板相对应的业务区分符，UE 101能够使用具备合适SSC模式的PDU会话来承载某一特定业务类型的媒体流业务。由此，使得UE 101能够在发生移动之时能够实现对某一类型的媒体流业务的连续性控制。由此解决了现有技术中数据网络无法向用户终端配置某一类型媒体流业务对应的业务连续性的问题。
图3A示出了由数据网络中的网络节点执行的、控制媒体流业务传输的方法3010的流程图。图3B示出了可在其中应用本申请的实施例的由数据网络中的网络节点执行的、控制媒体流业务传输的方法3010的示意图。图3C示出了由数据网络中的网络节点执行的、控制媒体流业务传输的方法3020的流程图。图3D示出了可在其中应用本申请的实施例的由数据网络中的网络节点执行的、控制媒体流业务传输的方法3020的示意图。方法3010和方法3020可以由图1中的5GMS AF1021来执行。以下以5GMS AF 1021来执行方法3010和方法3020为例来进行说明。如图3A和图3B所示，方法3010包括步骤S3011-S3014。
在步骤S3011中，5GMS AF 1021向核心网络中的网络节点(例如，NEF 1031或PCF 1032，或两者的结合)发送所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务。
所述核心网络中的网络节点包括用于控制网络开放功能的网络节点(例如，NEF 1031)或用于控制网络策略和计费规则功能的网络节点(例如，PCF 1032)或两者的结合。
例如，上述业务流类型符用于描述媒体流业务中不同功能的媒体流业务。或者，所述业务流类型符也可以指示媒体流业务类型的特征。比如，业务流类型符可以指示某个媒体流业务是以下各项中的某一项：媒体面数据、网络辅助信息、用量上报信息等。由此，实现不同功能的媒体流的业务流可以通过业务流类型符进行区分。由于不同业务流类型的媒体流业务可以使用具备不同QoS(服务质量)业务流来承载，因此通过5G核心网网络节点可以根据业务流类型符来向5GMS AF 1021指示不同的媒体流业务类型需要具备的业务区分符。从而实现特定的业务类型的业务流能够通过设置经过网络协商的业务区分符，来实现同一个PDU会话的不同的QoS流来传输；或者实现特定的业务流能够通过具备不同PDU会话来传输。
可选地，5GMS AF 1021还可以向核心网络(例如，CN 103)中的网络节点(例如NEF 1031、PCF 1032、或这两者)发送关于媒体流业务相关的其它的业务需求和相关信息，来辅助核心网络CN 103中的网络节点能够根据5GMS AF1021所提出的需求，为该媒体流业务设定更准确的、更符合用户与核心网签订的网络协议的网络策略(也即，5GMS AF 1021随后向UE 101下发的策略模板)。例如，5GMS AF 1021还可以向核心网络中的网络节点发送5GMS AF 1021的标识信息、5GMS应用提供者1023的标识信息、QoS(服务质量)需求信息、网络切片需求信息等等。本申请不对5GMS AF 1021向核心网络中的网络节点发送的信息进行限制，只要其能帮助核心网与5GMS AF进行业务传输的策略的协商即可。
可选地，5GMS AF 1021还可以向核心网络中的网络节点(例如，NEF 1031或PCF 1032，或两者的结合)发送至少一个媒体流业务的连续性需求。可选地，所述至少一个媒体流业务对应于至少一种媒体流的业务类型。因此，5GMS AF 1021向核心网络中的网络节点(例如，NEF 1031或PCF 1032，或两者的结合)发送至少一种媒体流的业务类型的连续性需求。
可选地，至少一个媒体流业务的连续性需求可以采用多种方式来进行描述。比如，至少一个媒体流业务的连续性需求可以采用文本描述：“本业务需要保障UE的IP地址不变的业务连续性”、“本业务执行过程中UE的IP地址可以改变但是业务不中断”等。至少一个媒体流业务的连续性需求还可以直接以SSC模式的指代符(例如，如果采用SSC模式1，即可直接使用指代符“1”)来进行描述，其指示该媒体流业务需要某种SSC模式。本申请不对连续性需求的形式进行限制。
基于此，核心网络中的网络节点(例如NEF、PCF、或这两者)能够根据5GMS AF1021所提出的需求，为该媒体流业务设定业务连续性特征(例如SSC模式)。可选地，核心网络中的网络节点还可以为该媒体流业务中的不同的媒体流业务类型确定对应的不同的业务连续性特征(例如SSC模式)。
可选地，某个特定的媒体流业务(例如应用A的媒体流业务)可能对应于多种业务流类型(例如，不同功能的媒体流业务)。例如对于视频媒体流会话而言，其包括上行的视频媒体流业务的数据传输、下行视频媒体流的数据传输、上行的视频媒体流业务的控制数据传输、下行视频媒体流的控制数据传输等等。不同业务流类型也可以对应不同的业务连续性特征。
在步骤S3012中，从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务，并且所述业务区分符与所述业务流类型符相对应。
可选地，核心网络中的网络节点将基于其的网络策略或本地配置信息来为该业务流类型符确定其对应的业务区分符。从而，可以保证业务区分符在业务服务器端(例如，5GMS AF1021)的配置和在CN 103中对用户面以及URSP中的配置一致。
可选地，在5GMS AF 1021还可以向核心网络中的网络节点发送至少一个媒体流业务的连续性需求，5GMS AF 1021还可以从所述核心网络中的网络节点接收所述业务区分符(和/或业务流类型符)所对应的媒体流业务类型的连续性特征。或者，核心网络中的网络节点将基于本地配置和网络策略确定与所述业务流类型符对应的业务区分符。然后向5GMS AF 1021返回业务区分符以及业务区分符相对应的连续性特征。
在步骤S3013中，5GMS AF 1021确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息。
5GMS AF1021可以根据从核心网络中的网络节点接收到的信息，来确定用于控制所述媒体流业务传输的策略模板信息。
例如，假设核心网络中的网络节点向5GMS AF1021发送了如下表4的业务区分符、SSC模式和业务流类型符，同一行的信息表示一组关联关系。
表4-确定媒体流的网络控制的网络节点反馈的连续性对应关系
业务区分符 业务流类型符 SSC模式
SD1 媒体面数据 SSC模式1
SD1 用量上报信息 SSC模式2
SD2 指标上报信息 SSC模式3
例如，5GMS AF1021可以根据上述信息填充策略模板信息。例如，对于用量上报数据的策略模板信息和/或动态策略资源的信息。例如，5GMS AF可以确定如下表5所示的策略模板信息：
表5-策略模板信息
Figure PCTCN2021119239-appb-000004
Figure PCTCN2021119239-appb-000005
例如，5GMS AF1021还可以根据上述信息填充策略模板信息。例如，对于媒体面数据的策略模板信息，5GMS AF 1021可以确定如下表6所示的策略模板信息：
表6-策略模板信息
资产(Property) 值
策略模板标识符(policyTemplateId) policyTemplateId-1
…… ……
会话和业务连续性(SSC mode) SSC模式1
流描述符 流描述符，其包括业务区分符SD1
…… ……
表5和表6中的“……”表示未示出的资产和其对应的值，本申请不对策略模板信息中的其他字段的内容和形式进行限制。
在步骤S3014中，5GMS AF1021向用户终端发送所述策略模板信息以及所述业务区分符。
通过方法3010，5GMS AF 1021可以和核心网的网络节点通过业务流类型符来协商业务区分符，从而实现对媒体流业务更精细的QoS控制。此外，通过方法3010，5GMS AF 1021可以和核心网的网络节点协商至少一个媒体流业务的连续性特征，从而实现网络侧能够根据业务的需求在传输媒体流业务时能够对业务连续性进行控制。
特别的，该策略模板可以作为UE的本地配置信息，当UE不支持URSP规则时，以该策略模板中的信息为依据来把该媒体流业务绑定到特定的PDU会话，或决定是否发起新的PDU会话。由此解决了现有技术中网络侧设备无法根据业务提供方的业务连续性需求来确定业务的业务连续性问题，以及数据网络中的设备无法为UE配置具有特定业务连续性的策略模板的问题。
由此，本申请的实施例实现了不同功能的媒体流的业务流可以通过业务区分符进行区分。由于不同业务流类型的媒体流业务可以使用具备不同QoS(服务质量)业务流来承载，因此5G核心网网络节点可以向5GMS AF 1021指示不同的业务流类型符对应的媒体流业务类型需要具备的业务区分符。从而实现特定的业务类型的业务流能够通过设置经过网络协商的业务区分符，来实现同一个PDU会话的不同的QoS流来传输；或者实现特定的业务流能够通过具备不同PDU会话来传输。
如图3C和图3D所示，方法3020包括步骤S3021-S3024。
在步骤S3021中，5GMS AF 1021向核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务。
5GMS AF 1021可以在本地查找该媒体流业务所对应的至少一个媒体流的业务类型，并向核心网络中的网络节点(例如，NEF 1031，或PCF 1032，或两者的结合)发送该媒体流业务所对应的至少一个媒体流业务的业务区分符。核心网络中的网络节点(例如，NEF 1031，或PCF 1032，或两者的结合)也能根据与该媒体流业务相关的网络协议或者约定，来确定该媒体流业务所对应的至少一个媒体流的业务类型的业务区分符。
上述的业务区分符信息包括以下各项中的至少一项：针对第四版本的网络协议(IPv4)的服务 类型信息(TOS)、针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、针对第六版本的网络协议(IPv6)的流标识信息、数据包过滤方向信息。
本文中所述的不同的业务区分符是指业务区分符中所包括的针对第四版本的网络协议(IPv4)的服务类型信息(TOS)、或者针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、或者针对第六版本的网络协议(IPv6)的流标识信息、或者数据包过滤方向信息中的任意一项不同。本领域技术人员应当理解，业务区分符中还可能包括其他各种字段，其也可能导致业务区分符的不同，本申请对此不进行限定。
可选地，5GMS AF 1021还可以向核心网络(例如，CN 103)中的网络节点(例如NEF 1031、PCF 1032、或这两者)发送关于媒体流业务相关的其它的业务需求和相关信息，来辅助核心网络CN 103中的网络节点能够根据5GMS AF1021所提出的需求，为该媒体流业务设定更准确的、更符合用户与核心网签订的网络协议的网络策略(也即，5GMS AF 1021随后向UE 101下发的策略模板)。例如，5GMS AF 1021还可以向核心网络中的网络节点发送5GMS AF 1021的标识信息、5GMS应用提供者1023的标识信息、QoS(服务质量)需求信息、网络切片需求信息等等。本申请不对5GMS AF 1021向核心网络中的网络节点发送的信息进行限制，只要其能帮助核心网与5GMS AF进行业务传输的策略的协商即可。
在步骤S3022中，5GMS AF 1021从所述核心网络中的网络节点接收所述媒体流业务的确认后的业务区分符。
核心网络CN 103中的网络节点将核查业务区分符是否符合其的网络策略或本地配置信息。如果符合，核心网络中的网络节点即可确认所述至少一个媒体流业务类型对应的业务区分符，并将其返回给5GMS AF 1021。如果不符合，核心网络中的网络节点可以基于网络策略或本地配置信息来修改或更新5GMS AF 1021发送的业务区分符，并将其返回给5GMS AF 1021。
在步骤S3023中，5GMS AF 1021确定与所述确认后的业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息。在步骤S3024中，5GMS AF 1021向用户终端发送所述策略模板信息以及所述业务区分符。
由此，方法3020也实现了不同功能和类型的媒体流的业务流可以通过业务区分符进行区分。由于不同业务区分符的媒体流业务可以使用具备不同QoS(服务质量)业务流来承载，因此通过5G核心网网络节点可以向5GMS AF 1021指示不同的媒体流业务类型需要具备的不同的业务区分符。从而实现特定的业务类型的业务流能够通过设置经过网络协商的业务区分符，来实现同一个PDU会话的不同的QoS流来传输；或者实现特定的业务流能够通过具备不同PDU会话来传输。
此外，本申请的实施例还提供了一种由数据网络中的网络节点执行的、控制媒体流业务传输的方法。该方法包括：向核心网络中的网络节点发送至少一个媒体流业务的连续性需求；从所述核心网络中的网络节点接收所述媒体流业务的连续性特征；确定用于控制所述媒体流业务传输的策略模板信息，所述策略模板信息包括所述媒体流业务的连续性特征；向用户终端发送用于控制所述媒体流业务传输的策略模板信息。
图4A示出了由数据网络中的网络节点执行的、控制媒体流业务传输的方法4010的流程图。图4B示出了由数据网络中的网络节点执行的、控制媒体流业务传输的方法4020的流程图。
图4A和图4B所描述的方法可以由图1中的NEF 1031、PCF 1032或二者的结合来执行。NEF 1031、PCF 1032、或二者的结合又可以称为核心网络中的网络节点。
如图4A所示，方法4010包括步骤S4011至S4013。
在步骤S4011中，核心网络CN 103中的网络节点从数据网络中的网络节点接收所述媒体流业 务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务。
所述业务流类型符指示所述至少一个媒体流业务类型的特征或媒体流业务的功能特征。比如，业务流类型符可以指示某个媒体流业务是以下各项中的某一项：媒体面数据、网络辅助信息、用量上报信息等。
可选地，从数据网络中的网络节点接收至少一个媒体流业务的连续性需求。可选的，所述至少一个媒体流业务也可以对应于至少一种媒体流的业务类型。核心网络CN 103中的网络节点可以根据5GMS AF1021所提出的与媒体流业务相关的业务连续性需求，为媒体流业务设定相应的业务连续性特征(例如SSC模式)，并根据所设定的业务连续性特征为该媒体流业务设定相应的费率。
在步骤S4012中，核心网络中的网络节点基于所述媒体流业务的业务流类型符、以及所述核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务。
5GMS AF 1021可以在本地查找该媒体流业务的业务流类型符所对应的至少一个业务类型，并向核心网络CN 103中的网络节点(例如，NEF 1031、或PCF 1032，或二者的结合)发送该媒体流业务所对应的业务区分符。
核心网络CN 103中的网络节点(例如，NEF 1031、或PCF 1032，或二者的结合)也能根据与用户签订的与该媒体流业务相关的网络协议，来确定该媒体流业务所对应的业务区分符。
上述的业务区分符信息包括以下各项中的至少一项：针对第四版本的网络协议(IPv4)的服务类型信息(TOS)、针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、针对第六版本的网络协议(IPv6)的流标识信息、数据包过滤方向信息。
本文中所述的不同的业务区分符是指业务区分符中所包括的针对第四版本的网络协议(IPv4)的服务类型信息(TOS)、针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、针对第六版本的网络协议(IPv6)的流标识信息、数据包过滤方向信息中的任意一项不同。本领域技术人员应当理解，业务区分符中还可能包括其他各种字段，其也可能导致业务区分符的不同，本申请对此不进行限定。
核心网络中的网络节点将基于其的网络策略或本地配置信息来为该媒体流业务类型确定其对应的至少一个业务区分符。从而，可以保证业务区分符在业务服务器端(例如，5GMS AF1021)的配置，在网络侧发送给UE的URSP规则，以及在核心网络CN 103对用户面的配置保持一致。
5G核心网网络节点可以根据业务流类型符为该业务类型的数据流分配特定的业务区分符，来向5GMS AF 1021指示不同业务流类型符对应的业务区分符。从而实现业务服务器为特定业务类型的业务流设置特定的业务区分符，实现特定的业务类型的业务流可以通过同一个PDU会话的不同的QoS流来传输，或者实现特定的业务类型的业务流能够通过不同的PDU会话来传输，进行精细化的QoS保障。
可选地，在5GMS AF 1021发送了业务连续性需求的情况下，核心网络CN 103中的网络节点将查找其与用户签订的协议，如果发现该用户未对特定连续性的业务进行付费，核心网络CN103将拒绝5GMS AF 1021的需求，而仅为该媒体流的业务设定基本的业务连续性。
核心网络中的网络节点能够基于所述媒体流业务的业务流类型符和连续性需求，确定所述媒体流业务(或者至少对应于一种媒体流业务类型)的连续性特征。也即，核心网络中的网络节点能够通过将所述业务区分符与所述连续性特征相关联来指示至少一种媒体流业务类型的连续性特征。
例如，核心网络中的网络节点可以根据5GMS AF1021发送的至少一个媒体流业务的连续性需求和业务流类型符，并根据其本地的网络策略或配置信息，设定如下表6所示的SSC模式、业务 区分符、业务流类型符的对应关系。表6中的同一行的信息表示一组关联关系。
表6-SSC模式、业务区分符、业务流类型符的对应关系
业务区分符 业务流类型符 SSC模式
SD1 媒体面数据 SSC模式1
SD1 用量上报信息 SSC模式2
SD2 指标上报信息 SSC模式3
在步骤S4013中，核心网络中的网络节点向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
例如，核心网络中的网络节点可以向5GMS AF1021反馈表6中的关联关系。
例如，表6还可以通过URSP从PCF 1032中下发至用户终端101。PCF所生成的URSP包括5GMS AF 1021和NEF/PCF协商确定的业务区分符。
通过方法4010，通过业务流类型符，5GMS AF 1021可以和核心网的网络节点协商至少一个媒体流业务的业务区分符，从而实现对媒体流业务更精细的QoS控制。
通过从5GMS AF 1021接收到带有SSC模式和/或业务区分符的策略模板，UE 101可以在发起或变更媒体流的业务的时候，能够使用具备合适SSC模式的PDU会话来承载该媒体流的业务。由此，使得UE 101能够在发起或变更媒体流业务之时能够实现该媒体流业务的连续性控制。特别的，该策略模板可以作为UE的本地配置信息，当UE不支持URSP规则时，以该策略模板中的信息为依据来把该媒体流业务绑定到特定的PDU会话，或决定是否发起新的PDU会话。由此解决了现有技术中网络侧设备无法根据业务提供方的需求来确定业务的业务连续性问题。
如图4B所示，方法4020包括步骤S4021至S4023。
在步骤4021中，核心网络中的网络节点从数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务。
其中，所述核心网络中的网络节点包括用于控制网络开放功能的网络节点和用于控制网络策略和计费规则功能的网络节点。
其中，所述业务区分符信息包括以下各项中的至少一项：针对第四版本的网络协议(IPv4)的服务类型信息(TOS)、针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、针对第六版本的网络协议(IPv6)的流标识信息、数据包过滤方向信息。
在步骤4022中，在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，核心网络中的网络节点将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符；在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，核心网络中的网络节点将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符。
在步骤4023中，核心网络中的网络节点向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
可选地，核心网络中的网络节点还可以从数据网络中的网络节点接收所述媒体流业务的业务区分符；基于所述媒体流业务的业务区分符以及本地配置，确定所述媒体流业务的业务区分符；向用户终端发送所述媒体流业务的业务区分符。例如，该业务区分符可以通过URSP从PCF 1032中下发至用户终端101。在PCF生成的URSP包括5GMS AF 1021和NEF/PCF协商确定的业务区分符。
本申请的实施例还提供了一种由核心网络中的网络节点执行的、控制媒体流业务传输的方法。 该方法包括：从数据网络中的网络节点接收至少一个媒体流业务的连续性需求；基于所述至少一个媒体流业务的连续性需求，确定所述至少一个媒体流业务的连续性特征；向所述数据网络中的网络节点发送所述至少一个媒体流业务的连续性特征。例如，该业务连续性特征可以通过URSP从PCF 1032中下发至用户终端101。例如，业务连续性特征为SSC模式。PCF所生成的URSP包括5GMS AF 1021和NEF/PCF协商确定的SSC模式。
图5A示出了由图1中的通信系统执行的、控制媒体流业务传输的方法50100的示意图。图5B示出了由图1中的通信系统执行的、控制媒体流业务传输的方法50200的示意图。
图5A和图5B所描述的方法中的各个步骤可以由图1中的UE 101、5GMS AF 1021、NEF 1031、PCF 1032(或NEF 1031和PCF 1032的结合)分别执行。NEF 1031、PCF 1032、或二者的结合又可以称为核心网络中的网络节点。
方法50100包括步骤S50101至步骤S50111。
在步骤S50101中，由数据网络中的网络节点向核心网络中的网络节点所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务。
在步骤S50102中，由核心网络中的网络节点从数据网络中的网络节点接收所述媒体流业务的业务流类型符。
在步骤S50103中，由核心网络中的网络节点基于所述媒体流业务的业务流类型符、以及所述核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务。
在步骤S50104中，由核心网络中的网络节点向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
在步骤S50105中，由数据网络中的网络节点从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符。
在步骤S50106中，由数据网络中的网络节点确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息。
策略模板信息包括由核心网络CN 103中的网络节点与5GMS AF 1011进行协商的一组参数。5GMS AF 1011可以通过创建策略模板的数据模型来在与核心网络中的网络节点的协商的过程中创建、获取、更新和删除相关的策略模板资源(Policy Template Resource)。由此策略模板信息还可被称为策略模板、策略模板资源、策略模板资源信息、策略模板数据等。本申请中以策略模板信息的命名方式来举例说明，但对策略模板信息的名称不加以限定。
可选地，所述策略模板信息还包括业务区分符(Service differentiator)，所述业务区分符指示媒体流业务类型。其中，所述策略模板信息通过将所述业务区分符与所述策略模板中的策略相关联来指示至少一种媒体流业务类型的会话策略。可选的，所述策略模板信息通过将所述业务区分符与现有的网络特征相关联来指示至少一种媒体流业务类型的PDU会话的属性。
例如，假设某条策略模板信息具有策略模板标识符(policyTemplateId)：policyTemplateId-1。在该策略模板信息中包括业务区分符SD-1和媒体流业务的连续性特征CF1。由于业务区分符SD-1和媒体流业务的连续性特征CF1均位于具有策略模板标识符policyTemplateId-1的策略模板信息中，因此，UE 101可以推断出业务区分符SD-1和媒体流业务的连续性特征CF1具备关联性。
也即，对应于包含该业务区分符SD-1的流描述符对应的媒体流业务应当具备媒体流业务的连续性特征CF1。
或者，动态策略资源中还可以以键值对的方式存储业务区分符和策略模板标识符以建立业务区 分符和策略模板标识符的关联关系，并通过该关联关系进一步确定业务区分符和媒体流业务的连续性特征的关联性。例如，以业务区分符的流描述符为键，以策略模板标识符为值构建如下键值对：<业务区分符SD-1的流描述符，策略模板标识符policyTemplateId-1>，<业务区分符SD-2的流描述符，策略模板标识符policyTemplateId-2>，<业务区分符SD-3的流描述符，策略模板标识符policyTemplateId-3>等等。例如，动态策略资源还可以以策略模板标识符为键，以业务区分符的流描述符为值构建键值对。例如，动态策略资源还可以以策略模板标识符为键，以业务区分符为值构建键值对。本申请不对将业务区分符和策略模板标识符相关联的方式进行进一步的限定。在本申请的实施例中，可以使用SSC模式来表征媒体流的会话和业务连续性的特征。本领域技术人员应当理解还可以使用其他参数来表征媒体流的连续性特征。具体地，SSC模式与协议数据单元(PDU)会话关联，并在PDU会话存续期间保持不变。
在步骤S50107中，由数据网络中的网络节点向用户终端发送所述策略模板信息以及所述业务区分符。
在步骤S50108中，由用户终端从数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符。
在步骤S50109中，由用户终端基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符。
在步骤S50110中，由用户终端确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流。
在步骤S50111中，在存在所述协议数据单元会话的情况下，由用户终端将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；在不存在所述协议数据单元会话的情况下，由用户终端建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
方法50200包括步骤S50201至步骤S50211。
方法50200包括步骤S50201至步骤S50211。
在步骤S50201中，由数据网络中的网络节点向核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务。
在步骤S50202中，由核心网络中的网络节点从数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符。
在步骤S50203中，在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，由核心网络中的网络节点将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符。在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，由核心网络中的网络节点将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符。
在步骤S50204中，由核心网络中的网络节点向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
在步骤S50205中，由数据网络中的网络节点从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符。
在步骤S50206中，由数据网络中的网络节点确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息。
在步骤S50207中，由数据网络中的网络节点向用户终端发送所述策略模板信息以及所述业务区分符。
在步骤S50208中，由用户终端从数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符。
在步骤S50209中，由用户终端基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符。
在步骤S50210中，由用户终端确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流。
在步骤S50211中，在存在所述协议数据单元会话的情况下，由用户终端将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；在不存在所述协议数据单元会话的情况下，由用户终端建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
在方法50100和方法50200中，网络侧的设备和用户终端还可以利用业务区分符来标识媒体流业务的细分类型，并使用业务流类型符对具备相同的业务区分符的媒体流业务进行进一步划分，从而实现对媒体流业务更精细的QoS控制和业务连续性控制。
由于一个PDU会话的SSC模式在其存续期间不变，因此在存在与待发起的媒体流业务的连续性特征相匹配的PDU会话的情况下，UE 101可以将待发起的媒体流业务绑定到该PDU会话，从而使得该PDU会话能够承载该待发起的媒体流业务。当然，如果不存在待发起的媒体流业务的连续性特征相匹配的PDU会话的情况下，UE 101需要建立符合待发起的媒体流业务的连续性要求的PDU会话(也即具备特定SSC模式的PDU会话)。
在方法50100和方法50200中，用户终端还可以从网络侧的设备接收到带有连续性特征的策略模板，用户终端可以在移动时，能够使用具备合适连续性特征的PDU会话来承载该媒体流的业务。由此，使得用户终端能够在移动时能够实现该媒体流业务的连续性控制。由此解决了现有技术中网络侧设备无法向用户终端配置媒体流业务对应的业务连续性的问题。
在方法50100和方法50200中，数据网络(DN)的网络节点还可以和核心网(CN)的网络节点协商至少一个媒体流业务的连续性特征，从而实现网络侧能够根据业务提供方的需求在传输媒体流业务时能够对业务连续性进行控制。
由此，本申请还提供了一种控制媒体流业务传输的方法，其包括：由数据网络中的网络节点向核心网络中的网络节点发送至少一个媒体流业务的连续性需求；由核心网络中的网络节点基于所述媒体流业务的连续性需求，确定所述媒体流业务的连续性特征；由核心网络中的网络节点向所述数据网络中的网络节点发送所述媒体流业务的连续性特征；由数据网络中的网络节点确定用于控制所述媒体流业务传输的策略模板信息，所述策略模板信息包括所述媒体流业务的连续性特征；由数据网络中的网络节点向用户终端发送用于控制所述媒体流业务传输的策略模板信息；由用户终端基于所述待发起的媒体流业务和所述策略模板信息，确定所述待发起的媒体流业务的连续性特征；由用户终端确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话具备所述待发起的媒体流业务的连续性特征；在存在所述协议数据单元会话的情况下，由用户终端将所述待发起的媒体流业务绑定到所述协议数据单元会话；在不存在所述协议数据单元会 话的情况下，由用户终端建立具备所述待发起的媒体流业务的连续性特征的协议数据单元会话。
图6示出了根据本申请的实施例的电子设备600的架构。
根据本申请实施例的设备(例如，终端、网络节点等)也可以借助于图6所示的电子设备的架构来实现。图6示出了该计算设备的架构。如图6所示，计算设备600可以包括总线610、一个或多个CPU 620、只读存储器(ROM)630、随机存取存储器(RAM)640、连接到网络的通信端口650、输入/输出组件660、硬盘670等。计算设备600中的存储设备，例如ROM 630或硬盘660可以存储计算机处理和/或通信使用的各种数据或文件以及CPU所执行的程序指令。计算设备600还可以包括用户界面680。当然，图6所示的架构只是示例性的，在实现不同的设备时，根据实际需要，可以省略图6示出的计算设备中的一个或多个组件。
本公开的实施例也可以被实现为非易失性计算机可读存储介质。根据本申请实施例的非易失性计算机可读存储介质上存储有计算机可读指令。当所述计算机可读指令由处理器运行时，可以执行参照以上附图描述的根据本申请实施例的方法。所述非易失性计算机可读存储介质包括但不限于例如易失性存储器和/或非易失性存储器。所述易失性存储器例如可以包括随机存取存储器(RAM)和/或高速缓冲存储器(cache)等。所述非易失性存储器例如可以包括只读存储器(ROM)、硬盘、闪存等。
本申请的实施例也可以被实现为计算机程序产品或计算机程序，该计算机程序产品或计算机程序包括计算机指令，该计算机指令存储在非易失性计算机可读存储介质中。计算机设备的处理器从计算机可读介质读取该计算机指令，处理器执行该计算机指令，使得该计算机设备执行上述各个方面或者上述各个方面的各种可选实现方式中提供的方法。
本领域技术人员能够理解，本申请所披露的内容可以出现多种变型和改进。例如，以上所描述的各种设备或组件可以通过硬件实现，也可以通过软件、固件、或者三者中的一些或全部的组合实现。
此外，如本申请和权利要求书中所示，除非上下文明确提示例外情形，“一”、“一个”、“一种”和/或“该”等词并非特指单数，也可包括复数。本申请中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。
此外，本申请中使用了流程图用来说明根据本申请的实施例的系统所执行的操作。应当理解的是，前面或下面操作不一定按照顺序来精确地执行。相反，可以按照倒序或同时处理各种步骤。同时，也可以将其他操作添加到这些过程中，或从这些过程移除某一步或数步操作。
除非另有定义，这里使用的所有术语(包括技术和科学术语)具有与本发明所属领域的普通技术人员共同理解的相同含义。还应当理解，诸如在通常字典里定义的那些术语应当被解释为具有与它们在相关技术的上下文中的含义相一致的含义，而不应用理想化或极度形式化的意义来解释，除非这里明确地这样定义。
以上对本申请进行了详细说明，但对于本领域技术人员而言，显然，本申请并非限定于本说明书中说明的实施方式。本申请在不脱离由权利要求书的记载所确定的本申请的宗旨和范围的前提下，可以作为修改和变更方式来实施。因此，本说明书的记载是以示例说明为目的，对本申请而言并非具有任何限制性的意义。

Claims (29)

  1. 一种控制媒体流业务传输的方法，包括：
    从数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；
    确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；
    在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；
    在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
  2. 如权利要求1所述的方法，其中，所述接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符包括：
    从所述数据网络中的网络节点，接收动态策略资源；
    其中，所述动态策略资源包括：用于标识所述策略模板信息的策略模板标识符、和包括所述策略模板信息对应的业务区分符的流描述符。
  3. 如权利要求1所述的方法，其中，所述业务区分符包括以下各项中的至少一项：针对第四版本的网络协议(IPv4)的服务类型信息(TOS)、针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、针对第六版本的网络协议(IPv6)的流标识信息、数据包过滤方向信息。
  4. 如权利要求1所述的方法，其中，所述策略模板信息包括所述媒体流业务的连续性特征，所述确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话包括：
    确定能够承载所述待发起的媒体流业务的协议数据单元会话是否具备所述待发起的媒体流业务的连续性特征。
  5. 一种控制媒体流业务传输的方法，包括：
    向核心网络中的网络节点发送所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；
    从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务，并且所述业务区分符与所述业务流类型符相对应；
    确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；
    向用户终端发送所述策略模板信息以及所述业务区分符。
  6. 如权利要求5所述的方法，其中，所述业务区分符包括以下各项中的至少一项：针对第四版本的网络协议(IPv4)的服务类型信息(TOS)、针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、针对第六版本的网络协议(IPv6)的流标识信息、数据包过滤方向信息。
  7. 一种控制媒体流业务传输的方法，包括：
    向核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    从所述核心网络中的网络节点接收所述媒体流业务的确认后的业务区分符；
    确定与所述确认后的业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；
    向用户终端发送所述策略模板信息以及所述业务区分符。
  8. 如权利要求7所述的方法，其中，所述业务区分符包括以下各项中的至少一项：针对第四版本的网络协议(IPv4)的服务类型信息(TOS)、针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、针对第六版本的网络协议(IPv6)的流标识信息、数据包过滤方向信息；
    其中，所述业务区分符是所述核心网络中的网络节点基于该网络节点的网络策略或本地配置信息而确定的。
  9. 一种控制媒体流业务传输的方法，包括：
    从数据网络中的网络节点接收所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；
    基于所述媒体流业务的业务流类型符、以及核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
  10. 如权利要求9所述方法，其中，所述业务区分符包括以下各项中的至少一项：针对第四版本的网络协议(IPv4)的服务类型信息(TOS)、针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、针对第六版本的网络协议(IPv6)的流标识信息、数据包过滤方向信息。
  11. 一种控制媒体流业务传输的方法，包括：
    从数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    在所述媒体流业务的待确认的业务区分符与核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符；
    在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符；
    向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
  12. 如权利要求11所述方法，其中，所述业务区分符包括以下各项中的至少一项：针对第四版本的网络协议(IPv4)的服务类型信息(TOS)、针对第六版本的网络协议(IPv6)的通信分类信息(Traffic class)、针对第六版本的网络协议(IPv6)的流标识信息、数据包过滤方向信息。
  13. 如权利要求11所述的方法，其中，所述核心网络中的网络节点包括用于控制网络开放功能的网络节点和用于控制网络策略和计费规则功能的网络节点。
  14. 一种控制媒体流业务传输的方法，包括：
    由数据网络中的网络节点向核心网络中的网络节点所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；
    由所述核心网络中的网络节点从所述数据网络中的网络节点接收所述媒体流业务的业务流类型符；
    由所述核心网络中的网络节点基于所述媒体流业务的业务流类型符、以及所述核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    由所述核心网络中的网络节点向所述数据网络中的网络节点发送所述媒体流业务的业务区分 符；
    由所述数据网络中的网络节点从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符；
    由所述数据网络中的网络节点确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；
    由所述数据网络中的网络节点向用户终端发送所述策略模板信息以及所述业务区分符；
    由所述用户终端从所述数据网络中的网络节点，接收所述策略模板信息以及所述业务区分符；
    由所述用户终端基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；
    由所述用户终端确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；
    在存在所述协议数据单元会话的情况下，由所述用户终端将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；
    在不存在所述协议数单元会话的情况下，由所述用户终端建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
  15. 一种控制媒体流业务传输的方法，包括：
    由数据网络中的网络节点向核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    由所述核心网络中的网络节点从所述数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符；
    在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，由所述核心网络中的网络节点将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符；
    在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，由所述核心网络中的网络节点将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符；
    由所述核心网络中的网络节点向所述数据网络中的网络节点发送所述媒体流业务的业务区分符；
    由所述数据网络中的网络节点从所述核心网络中的网络节点接收所述媒体流业务的业务区分符；
    由所述数据网络中的网络节点确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；
    由所述数据网络中的网络节点向所述用户终端发送所述策略模板信息以及所述业务区分符；
    由所述用户终端从所述数据网络中的网络节点，接收所述策略模板信息以及所述业务区分符；
    由所述用户终端基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；
    由所述用户终端确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；
    在存在所述协议数据单元会话的情况下，由所述用户终端将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；
    在不存在所述协议数据单元会话的情况下，由所述用户终端建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
  16. 一种控制媒体流业务传输的用户终端，包括：
    存储器；和
    一个或多个处理器，可操作地被耦合到所述存储器，所述存储器和所述一个或多个处理器被配置为：
    从数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；
    确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；
    在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；
    在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
  17. 一种由控制媒体流业务传输的用户终端，包括：
    接收单元，被配置为：从数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    第一确定单元，被配置为：基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；
    第二确定单元，被配置为：确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；
    会话单元，被配置为：在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
  18. 一种由控制媒体流业务传输的数据网络中的网络节点，包括：
    存储器；和一个或多个处理器，可操作地被耦合到所述存储器，所述存储器和所述一个或多个处理器被配置为：
    向核心网络中的网络节点发送所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；
    从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务，并且所述业务区分符与所述业务流类型符相对应；
    确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；
    向用户终端发送所述策略模板信息以及所述业务区分符。
  19. 一种由控制媒体流业务传输的数据网络中的网络节点，包括：
    第一发送单元，被配置为：向核心网络中的网络节点发送所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；
    接收单元，被配置为：从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符， 其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务，并且所述业务区分符与所述业务流类型符相对应；
    确定单元，被配置为：确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；
    第二发送单元，被配置为：向用户终端发送所述策略模板信息以及所述业务区分符。
  20. 一种控制媒体流业务传输的数据网络中的网络节点，包括：
    存储器；和一个或多个处理器，可操作地被耦合到所述存储器，所述存储器和所述一个或多个处理器被配置为：
    向核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    从所述核心网络中的网络节点接收所述媒体流业务的确认后的业务区分符；
    确定与所述确认后的业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；
    向用户终端发送所述策略模板信息以及所述业务区分符。
  21. 一种控制媒体流业务传输的数据网络中的网络节点，包括：
    第一发送单元，被配置为：向核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    接收单元，被配置为：从所述核心网络中的网络节点接收所述媒体流业务的确认后的业务区分符；
    确定单元，被配置为：确定与所述确认后的业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；
    第二发送单元，被配置为：向用户终端发送所述策略模板信息以及所述业务区分符。
  22. 一种控制媒体流业务传输的核心网络中的网络节点，包括：
    存储器；和一个或多个处理器，可操作地被耦合到所述存储器，所述存储器和所述一个或多个处理器被配置为：
    从数据网络中的网络节点接收所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；
    基于所述媒体流业务的业务流类型符、以及所述核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
  23. 一种控制媒体流业务传输的核心网络中的网络节点，包括：
    接收单元，被配置为：从数据网络中的网络节点接收所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；
    确定单元，被配置为：基于所述媒体流业务的业务流类型符、以及所述核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    发送单元，被配置为：向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
  24. 一种控制媒体流业务传输的核心网络中的网络节点，包括：
    存储器；和一个或多个处理器，可操作地被耦合到所述存储器，所述存储器和所述一个或多个处理器被配置为：
    从数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符；
    在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符；
    向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
  25. 一种控制媒体流业务传输的核心网络中的网络节点，包括：
    接收单元，被配置为：从数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    确认单元，被配置为：在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符；在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符；
    发送单元，被配置为：向所述数据网络中的网络节点发送所述媒体流业务的业务区分符。
  26. 一种控制媒体流业务传输的系统，包括用户终端、数据网络中的网络节点和核心网络中的网络节点，其中：所述数据网络中的网络节点，被配置为：
    向所述核心网络中的网络节点发送所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；
    从所述核心网络中的网络节点接收所述媒体流业务对应的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务，并且所述业务区分符与所述业务流类型符相对应；
    确定与所述业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；
    向用户终端发送所述策略模板信息以及所述业务区分符；
    所述核心网络中的网络节点，被配置为：
    从所述数据网络中的网络节点接收所述媒体流业务的业务流类型符，所述业务流类型符用于描述所述媒体流业务中不同功能的媒体流业务；
    基于所述媒体流业务的业务流类型符、以及所述核心网络中的网络节点的网络策略或本地配置信息，确定所述媒体流业务的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    向所述数据网络中的网络节点发送所述媒体流业务的业务区分符；
    所述用户终端，被配置为：
    从所述数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；
    确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单 元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；
    在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；
    在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
  27. 一种控制媒体流业务传输的系统，包括用户终端、数据网络中的网络节点和核心网络中的网络节点，其中：所述数据网络中的网络节点，被配置为：
    向所述核心网络中的网络节点发送所述媒体流业务的待确认的业务区分符，其中，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    从所述核心网络中的网络节点接收所述媒体流业务的确认后的业务区分符；
    确定与所述确认后的业务区分符相对应的、用于控制所述媒体流业务传输的策略模板信息；
    向用户终端发送所述策略模板信息以及所述业务区分符；
    所述核心网络中的网络节点，被配置为：
    从所述数据网络中的网络节点接收所述媒体流业务的待确认的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的情况下，将所述媒体流业务的待确认的业务区分符确认为所述媒体流业务的业务区分符；
    在所述媒体流业务的待确认的业务区分符与所述核心网络中的网络节点的网络策略或本地配置信息不匹配的情况下，将与所述核心网络中的网络节点的网络策略或本地配置信息相匹配的业务区分符确认为所述媒体流业务的业务区分符；
    向所述数据网络中的网络节点发送所述媒体流业务的业务区分符；
    所述用户终端被配置为：
    从所述数据网络中的网络节点，接收用于控制所述媒体流业务传输的策略模板信息以及所述策略模板信息对应的业务区分符，所述业务区分符用于区分所述媒体流业务中不同业务类型的媒体流业务；
    基于所述策略模板信息和所述业务区分符，确定待发起的媒体流业务的业务区分符；
    确定是否存在能够承载所述待发起的媒体流业务的协议数据单元会话，其中，所述协议数据单元会话包括与所述待发起的媒体流业务的业务区分符对应的服务质量流；
    在存在所述协议数据单元会话的情况下，将所述待发起的媒体流业务绑定到所述协议数据单元会话中的服务质量流上；
    在不存在所述协议数据单元会话的情况下，建立包括与所述待发起的媒体流业务的业务区分符对应的服务质量流的协议数据单元会话。
  28. 一种非易失性计算机可读存储介质，其上存储有计算机指令，所述计算机指令被处理器执行时实现如权利要求1-15中的任一项所述的方法。
  29. 一种电子设备，包括：
    处理器；以及
    存储器，其中，所述存储器中存储有计算机可执行程序，当由所述处理器执行所述计算机可执行程序时，执行权利要求1-15中任一项所述的方法。
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