WO2023010360A1

WO2023010360A1 - Transmission methods and apparatus, device, and storage medium

Info

Publication number: WO2023010360A1
Application number: PCT/CN2021/110667
Authority: WO
Inventors: 郭雅莉; 付喆; 徐婧
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2023-02-09
Also published as: CN117397278A

Abstract

Transmission methods and apparatus, a device, and a storage medium, which relate to the technical field of communications. A method comprises: an application function sending first association information to a policy control network element, the first association information comprising first identification information corresponding to application data units having an association (610); the policy control network element sending the first association information to a session management network element (620); the session management network element sending, to a user plane network element, first identification information corresponding to the application data units (630); and the session management network element sending the first association information to an access network element (640). Providing the association between at least one application data unit facilitates performing, in a data transmission process, overall transmission control on application data units having an association, ensuring that the application data units can promptly and successfully complete decoding, thereby meeting synchronization requirements of services such as audio and video playback, and improving user experience.

Description

Transmission method, device, equipment and storage medium

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a transmission method, device, device, and storage medium.

Background technique

The 5G (5th-Generation, fifth-generation mobile communication technology) network system architecture may include: terminal equipment, (wireless) access network ((Radio) Access Network, (R) AN) and core network (Core).

The terminal device is connected to the (wireless) access network through the Uu interface at the access layer, and exchanges access layer messages or transmits wireless data. The core network includes: AMF (Access and Mobility Management Function, access and mobility management function), SMF (Session Management Function, session management function), PCF (Policy Control Function, policy control function), UPF (User Plane Function, user surface functions) and other network elements. Among them, the terminal device establishes a non-access stratum (None Access Stratum, NAS) connection with the AMF through the N1 interface, and exchanges NAS messages; AMF is not only responsible for the mobility management of the terminal device, but also responsible for forwarding the session between the terminal device and the SMF Manage relevant information; PCF is responsible for formulating policies related to terminal equipment mobility management, session management, and charging; UPF performs data transmission with external data network (Data Network, DN) through N6 interface, and communicates with (wireless) access network for data transmission.

However, further discussion and research are needed on how to control data transmission between terminal equipment, (wireless) access network and core network.

Contents of the invention

Embodiments of the present application provide a transmission method, device, equipment, and storage medium. Described technical scheme is as follows:

On the one hand, the embodiment of the present application provides a transmission method, which is applied to a policy control network element, and the method includes:

receiving first association information sent by the application function, where the first association information includes first identification information respectively corresponding to application data units having an association relationship, where the first identification information is used to identify the application data units;

Send the first association information to a session management network element.

On the other hand, an embodiment of the present application provides a transmission method, which is applied to a session management network element, and the method includes:

The first association information sent by the policy control network element is received, where the first association information includes first identification information respectively corresponding to the application data units having an association relationship, and the first identification information is used to identify the application data units.

In another aspect, the embodiment of the present application provides a transmission method, which is applied to a user plane network element, and the method includes:

Receive the first identification information corresponding to the application data unit sent by the session management network element, and/or the serial number corresponding to the application data unit; the first identification information is used to identify the application data unit.

In yet another aspect, an embodiment of the present application provides a transmission method, which is applied to a network element of an access network, and the method includes:

receiving the first association information or the second association information sent by the session management network element;

Wherein, the first association information includes the first identification information corresponding to the application data units with the association relationship, and the first identification information is used to identify the application data units; the second association information includes the The numbers corresponding to the application data units of the relationship.

In another aspect, the embodiment of the present application provides a transmission device, which is set on a policy control network element, and the device includes:

The first receiving module is configured to receive the first association information sent by the application function, the first association information includes the first identification information corresponding to the application data units with the association relationship, and the first identification information is used to identify the application data unit;

A first sending module, configured to send the first association information to a session management network element.

In another aspect, the embodiment of the present application provides a transmission device, which is set on a session management network element, and the device includes:

The second receiving module is configured to receive the first association information sent by the policy control network element, the first association information includes the first identification information corresponding to the application data units with the association relationship, and the first identification information is used to identify The application data unit.

In another aspect, the embodiment of the present application provides a transmission device, which is set on a user plane network element, and the device includes:

The third receiving module is configured to receive the first identification information corresponding to the application data unit sent by the session management network element, and/or the serial number corresponding to the application data unit; the first identification information is used to identify the application data unit.

In another aspect, the embodiment of the present application provides a transmission device, which is set on a network element of an access network, and the device includes:

A fourth receiving module, configured to receive the first associated information or the second associated information sent by the session management network element;

In another aspect, an embodiment of the present application provides a policy control network element, where the policy control network element includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to receive first association information sent by an application function, where the first association information includes first identification information corresponding to application data units with an association relationship, and the first identification information is used to identify the application data unit;

The transceiver is further configured to send the first association information to a session management network element.

In another aspect, an embodiment of the present application provides a session management network element, where the session management network element includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to receive first association information sent by a policy control network element, where the first association information includes first identification information corresponding to application data units with an association relationship, and the first identification information is used to identify The application data unit.

In yet another aspect, an embodiment of the present application provides a user plane network element, where the user plane network element includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to receive the first identification information corresponding to the application data unit sent by the session management network element, and/or the number corresponding to the application data unit; the first identification information is used to identify the application data unit.

In another aspect, an embodiment of the present application provides an access network element, where the access network element includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to receive the first association information or the second association information sent by the session management network element;

In another aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a policy control network element, so as to implement the above-mentioned policy control Transmission method on the NE side.

In another aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a session management network element, so as to implement the above-mentioned session management Transmission method on the NE side.

In another aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a user plane network element, so as to implement the above-mentioned user plane Transmission method on the NE side.

In another aspect, the embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of an access network element, so as to implement the above-mentioned access The transmission method on the network element side.

In another aspect, an embodiment of the present application provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on a policy control network element, it is used to implement the policy control network element as described above. side transfer method.

In another aspect, an embodiment of the present application provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on a session management network element, it is used to implement the above-mentioned session management network element side transfer method.

In another aspect, an embodiment of the present application provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on a user plane network element, it is used to implement the above-mentioned user plane network element side transfer method.

In another aspect, the embodiment of the present application provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on an access network element, it is used to implement the above-mentioned access network Transmission method on the NE side.

In another aspect, an embodiment of the present application provides a computer program product, which is used to implement the transmission method on the policy control network element side when the computer program product runs on the policy control network element.

In another aspect, an embodiment of the present application provides a computer program product, which is used to implement the above transmission method on the session management network element side when the computer program product runs on the session management network element.

In another aspect, an embodiment of the present application provides a computer program product, which is used to implement the above-mentioned transmission method on the user plane network element side when the computer program product runs on the user plane network element.

In another aspect, the embodiment of the present application provides a computer program product, which is used to implement the above-mentioned transmission method on the network element side of the access network when the computer program product runs on the network element of the access network.

The technical solutions provided by the embodiments of the present application may include the following beneficial effects:

By providing the identification information for identifying the application data unit, it is helpful to realize the application data unit level transmission control on the data. Moreover, in the embodiment of the present application, by providing an association relationship between at least one application data unit, it is helpful to carry out overall transmission control on the application data units with association relationship during the data transmission process, so as to ensure that the application data units can be timely Decoding is successfully completed successfully, meeting the synchronization requirements of audio and video playback and other services, and improving user experience.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic diagram of a 5G network system architecture provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a 5G network system architecture provided by another embodiment of the present application;

FIG. 3 is a schematic diagram of a QoS model provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a user plane protocol stack provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a user plane protocol stack provided by another embodiment of the present application;

Fig. 6 is a schematic diagram of a transmission method provided by an embodiment of the present application;

Fig. 7 is a schematic diagram of a transmission method provided by another embodiment of the present application;

Fig. 8 is a schematic diagram of a transmission method provided by another embodiment of the present application;

FIG. 9 is a schematic diagram of a transmission method provided by another embodiment of the present application;

FIG. 10 is a block diagram of a transmission device provided by an embodiment of the present application;

Fig. 11 is a block diagram of a transmission device provided by another embodiment of the present application;

Fig. 12 is a block diagram of a transmission device provided in another embodiment of the present application;

Fig. 13 is a block diagram of a transmission device provided in another embodiment of the present application;

Fig. 14 is a block diagram of a transmission device provided by another embodiment of the present application;

Fig. 15 is a block diagram of a transmission device provided by another embodiment of the present application;

Fig. 16 is a block diagram of a transmission device provided by another embodiment of the present application;

FIG. 17 is a schematic structural diagram of a policy control network element provided by an embodiment of the present application;

FIG. 18 is a schematic structural diagram of a session management network element provided by an embodiment of the present application;

FIG. 19 is a schematic structural diagram of a user plane network element provided by an embodiment of the present application;

Fig. 20 is a schematic structural diagram of an access network element provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. The evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

The technical solutions provided by the embodiments of the present application can be applied to various communication systems, such as: GSM (Global System of Mobile Communication, Global Mobile Communication) system, CDMA (Code Division Multiple Access, Code Division Multiple Access) system, WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access) system, GPRS (General Packet Radio Service, general packet radio service), LTE (Long Term Evolution, long-term evolution) system, FDD (Frequency Division Duplex, LTE Frequency Division Duplex) system, TDD (Time Division Duplex, LTE Time Division Duplex) system, UMTS (Universal Mobile Telecommunication System, Universal Mobile Communication System), WiMAX (Worldwide Interoperability for Microwave Access, Global Interoperability for Microwave Access) communication system, 5GS (5th-Generation System, fifth generation mobile communication system) or New Radio (NR) system, or other subsequent evolution systems, etc.

Please refer to FIG. 1 , which shows a schematic diagram of a 5G network system architecture provided by an embodiment of the present application. As shown in FIG. 1 , the system architecture 100 may include: a terminal device, a (wireless) access network, a core network, and a data network. Among them, terminal equipment, (wireless) access network, and core network are the main components of the system architecture 100. Logically, they can be divided into two parts: the user plane and the control plane. The control plane is responsible for the management of the mobile network, and the user plane is responsible for business data. transmission. In Figure 1, the NG2 reference point is located between the control plane of the (wireless) access network and the control plane of the core network, the NG3 reference point is located between the user plane of the (wireless) access network and the user plane of the core network, and the NG6 reference point The point is between the user plane of the core network and the data network.

Terminal equipment: It is the entrance for mobile users to interact with the network. It can provide basic computing power and storage capacity, display business windows to users, and accept user operation input. The terminal device can perform an access layer connection with the (wireless) access network through the Uu interface, exchange access layer messages or transmit wireless data. The terminal equipment may refer to a UE (User Equipment, user equipment), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user device. It is a cellular phone, cordless phone, SIP (Session Initiation Protocol, session initiation protocol) phone, WLL (Wireless Local Loop, wireless local loop) station, PDA (Personal Digita1 Assistant, personal digital processing), handheld device with wireless communication function , a computing device or other processing device connected to a wireless modem, a vehicle device, a wearable device, etc., which are not limited in this embodiment of the present application. For convenience of description, the devices mentioned above are collectively referred to as terminal devices.

(Wireless) access network: Provide network access functions for authorized users in a specific area, and can use transmission tunnels of different qualities to transmit user data according to user levels and business requirements. The (wireless) access network can manage its own resources, provide access services for terminal equipment on demand, and forward control signals and user data between terminal equipment and the core network. One or more network elements of the access network may be deployed in the (wireless) access network, and the network element of the access network is a device deployed in the (wireless) access network to provide wireless communication functions for terminal devices. The network elements of the access network may include various forms of macro base stations, micro base stations, relay stations, access points, and so on. In systems adopting different wireless access technologies, the names of the devices having the function of network elements of the access network may be different, for example, in the NR system, it is called gNodeB or gNB. For convenience of description, in the embodiments of the present application, the above-mentioned apparatuses for providing wireless communication functions for terminal devices are collectively referred to as access network elements.

Core network: responsible for maintaining the subscription data of the mobile network, managing network elements of the mobile network, and providing functions such as session management, mobility management, policy management, and security authentication for terminal devices. When the terminal device is attached, it provides network access authentication for the terminal device; when the terminal device has a service request, it allocates network resources for the terminal device; when the terminal device moves, it updates the network resources for the terminal device; when the terminal device is idle, Provide a fast recovery mechanism for terminal devices: release network resources for terminal devices when they are detached; provide data routing functions for terminal devices when they have business data, such as forwarding uplink data to the data network, or The downlink data received by the network is forwarded to the (wireless) access network, and then sent to the terminal device.

Data network: Provide business services for users. Generally, the client is located in the terminal device, and the server is located in the data network. The data network can be a private network (such as a local area network), or an external network that is not controlled by the operator (such as the Internet (Internet)), or a private network jointly deployed by the operator (such as for configuring IMS (IP Multimedia Core) Network Subsystem, IP Multimedia Network Subsystem (IP Multimedia Network Subsystem) service and deployed network), which is not limited in this embodiment of the present application.

Among them, as shown in Figure 2, the user plane of the core network includes UPF; the control plane of the core network includes: AMF, SMF, PCF, AUSF (Authentication Server Function, authentication server function), UDM (Unified Data Management, unified data management), AF (Application Function, application function), NSSF (Network Slice Selection Function, network slice selection function), etc. The functions of these functional entities (or called "network elements") are as follows.

UPF: Responsible for routing and forwarding of user plane data packets, user plane QoS processing, user usage information statistics and reporting, interaction with external data networks, etc.

AMF: Handle all tasks related to connection and mobility management of terminal devices, such as registration management, connection management, mobility management, etc.

SMF: responsible for session establishment, modification and release, tunnel maintenance between UPF and AN (Access Node, access node), terminal device IP (Internet Protocol, network protocol) address allocation and management, selection and control of UPF functions, Billing data collection and billing interface support, etc.

PCF: Supports a unified policy framework to manage network behavior, and provides operator network control policies to other network elements and terminal devices.

AUSF: It is used to receive AMF’s request for identity verification of terminal equipment, request a key from UDM, and then forward the issued key to AMF for authentication processing.

UDM: Including the generation and storage of user subscription data, management of authentication data, etc., and supports interaction with external third-party servers.

AF: It can be an operator's internal application function (such as IMS, etc.), or a third-party service (such as web service, video, game, etc.).

NSSF: Mainly used for the selection of network slices.

In the system architecture shown in Figure 2, the terminal equipment (UE) connects to the (wireless) access network (R)AN through the Uu interface, and exchanges access layer messages or transmits wireless data; the terminal equipment connects to the (wireless) access network (R)AN through the N1 interface Establish a non-access layer connection with AMF and exchange NAS messages; AMF is responsible for forwarding session management related messages between terminal equipment and SMF in addition to mobility management for terminal equipment; PCF is responsible for formulating mobility management for terminal equipment , session management, billing and other related policies; UPF performs data transmission with the external data network (Data Network, DN) through the N6 interface, and performs data transmission with the (wireless) access network through the N3 interface.

It should be noted that the name of the interface between each network element in FIG. 1 and FIG. 2 is just an example, and the name of the interface may be another name during specific implementation, which is not limited in this embodiment of the present application. The names of the various network elements (such as SMF, PCF, UPF, etc.) included in Figure 1 and Figure 2 are only examples, and do not limit the functions of the network elements themselves. In 5G and other future networks, the above-mentioned network elements The element may also have other names, which are not limited in this embodiment of the present application. Exemplarily, in a 6G network, some or all of the above-mentioned network elements may use terms in 5G, or may use other names. In addition, it should be understood that the names of the messages (or signaling) transmitted between the foregoing network elements are only examples, and do not constitute any limitation on the functions of the messages themselves.

In one example, the 5G network provides data transmission services between the terminal device and the external data network through a PDU (Protocol Data Unit, protocol data unit) session, and can transmit different services in the same PDU session according to different services. Data streams provide differentiated QoS (Quality of Service) guarantees.

Please refer to FIG. 3 , which shows a schematic diagram of a QoS model provided by an embodiment of the present application. The QoS model shown in Figure 3 performs QoS control based on the QoS flow granularity. Optionally, after the terminal device accesses the 5G network through the Uu interface, it establishes a QoS flow for data transmission under the control of the SMF; the SMF provides the QoS flow configuration information of each QoS flow to the network element of the access network, including 5QI (5G QoS Identifier, 5G QoS identification), ARP (Allocation and Retention Priority, allocation and retention priority), and bit rate requirements and other information. Among them, 5QI is an index value that can correspond to QoS characteristics such as delay and bit error rate requirements. For example, when the value of 5QI is 66, the corresponding delay is 100ms (milliseconds), and the corresponding bit error rate is 1e- 2; ARP assigns or maintains the priority of resources for the QoS flow. For each QoS flow, the network elements of the access network schedule radio resources according to the QoS flow configuration information received from the SMF, so as to guarantee the QoS requirements of the QoS flow.

Please refer to FIG. 4 , which shows a schematic diagram of a user plane protocol stack provided by an embodiment of the present application. Based on the user plane protocol stack shown in Figure 4, the UPF in the core network can be resolved to the PDU layer (PDU layer) of the data packet, for example, for an IP data packet, it can be resolved to the IP data header (including source IP address, destination IP address, source port number, destination port number, etc.). Therefore, the UPF determines the QoS flow based on the parsed information, and transmits the service data flow through the corresponding QoS flow, so as to obtain the corresponding QoS guarantee.

In some examples, the application layer data exchanged between the terminal device and the application server or the peer terminal device usually undergoes specific encoding and compression processing, such as AR (Augmented Reality, augmented reality technology), VR (Virtual Reality, virtual Reality), cloud gaming (Cloud Gaming) and other data. Optionally, the encoding and compression include encoding and compression based on video codec technical standards such as H.264. Video codec standards such as H.264 format data through the Network Abstraction Layer (NAL) and provide header information for application layer data. During the encoding process, some video frame sequences are compressed into I frames, some video frame sequences are compressed into P frames, and some video frame sequences are compressed into B frames. Among them, the I frame is a key frame, which belongs to intra-frame compression, and only needs the data of this frame to complete the decoding; while the P frame and B frame have no complete picture data, only the data that is different from the picture of the adjacent frame, and corresponding The pictures of adjacent frames are superimposed with the difference defined in this frame to generate the final picture.

However, combined with the user plane protocol stack shown in Figure 4, the network cannot parse the data header of the application layer data for the video service data stream that has been processed such as compression encoding, and cannot distinguish whether the compressed encoded data belongs to an I frame or an I frame. P frame, B frame, and these data can only be regarded as the same business data flow, and the same QoS guarantee. In this way, key transmission of key frames cannot be performed accurately, which may result in loss of key frame data, which has a great impact on service experience.

In addition, there may be a certain relationship between application layer data, for example, one audio data and another video or image data need to be played at the same time, or a video frame and its corresponding subtitle need to be played at the same time, so as to meet the viewing needs of users; For example, a B frame needs to be correctly decoded by the terminal device only when the frames before and after the frame associated with it arrive at the terminal device. In related technologies, a data cache area is set at the application layer, and two or more data are associated from the application layer, and after all the associated data arrive at the data cache area, decoding or playback processing is performed simultaneously. However, for AR, VR, cloud games and other services that require high real-time playback, the data received by the terminal device from the network needs to be decoded and played immediately, so that it cannot be cached for a long time in the data cache area of the application layer , to wait for the arrival of other associated data. Therefore, when a piece of data is successfully transmitted to the terminal device, but its associated data does not arrive, problems such as out-of-sync audio and video playback and decoding failure may occur, which will have a relatively large impact on user experience.

Based on this, an embodiment of the present application provides a transmission method, which can solve the above technical problem. As shown in Figure 5, in order to implement the transmission method provided by the embodiment of the present application, the UPF (user plane network element) in the core network needs to be able to resolve the application layer (Application layer) of the data packet, for example, it needs to be able to read the data through the H .264 and other video codecs to encode and compress NAL-formatted data. In the following, the transmission method provided by this application will be described in conjunction with several embodiments.

Please refer to FIG. 6 , which shows a flowchart of a transmission method provided by an embodiment of the present application. The method can be applied to the system architecture shown in the above-mentioned FIG. 1 and FIG. 2 , and the method can be based on the QoS model shown in FIG. 3 and the user plane protocol stack shown in FIG. 5 . The method may include at least some of the following steps.

In step 610, the application function sends first association information to the policy control network element, where the first association information includes first identification information corresponding to application data units with an association relationship, and the first identification information is used to identify the application data units.

The application function can be the internal application function of the operator (such as IMS, etc.), or it can be a third-party service (such as web service, video, game, etc.). In the 5G network system architecture, the application function can be realized as AF. The policy control network element is responsible for providing the operator's network control policy to other network elements and terminal devices. In the 5G network system architecture, the policy control network element can be implemented as PCF. In other or future network system architectures, application functions and policy control network elements may partly or completely use the names in the 5G network system architecture, or have other names. It should be understood that these names should belong to the scope of protection of this application within.

In this embodiment of the present application, the application function may send first association information to the policy control network element in the core network, where the first association information is used to indicate that at least one application data unit has an association relationship. The embodiment of the present application does not limit the content of the first association information. Optionally, the first association information includes but is not limited to: application data units with an association relationship (that is, at least one application data unit with an association relationship indicated by the first association information) application data unit) respectively corresponding to the first identification information. Exemplarily, the first association information is used to indicate that there is association information between three application data units (application data unit 1, application data unit 2, and application data unit 3), then the first association information includes these three application data units First identification information corresponding to each unit (first identification information corresponding to application data unit 1, first identification information corresponding to application data unit 2, first identification information corresponding to application data unit 3).

The application data unit may include at least one data packet. The embodiment of the present application does not limit the specific implementation of the application data unit. For example, when the service data stream is implemented as an audio and video stream, the application data unit may be frame, or a coded slice within a frame. Optionally, the application data unit may also be called ADU (Application Data Unit), or may have other names, which is not limited in this embodiment of the present application.

The first identification information is used to identify the application data unit, and this embodiment of the present application does not limit the specific content of the first identification information. In an example, the first identification information includes but is not limited to at least one of the following: first identification information, first type information, first transmission information, and the like. The first identification information is used to identify the application data unit. Exemplarily, when the application data unit is implemented as a frame, the first identification information may include a frame number; when the application data unit is implemented as a coded slice within the frame, The first identification information may include an encoding slice identification. The first type information is used to indicate the type of the application data unit. Optionally, the first type information includes but is not limited to any of the following: self-encoding application data unit, forward predictive encoding application data unit, bidirectional predictive encoding application data unit , sequence parameter set, image parameter set, etc. The first transmission information is used to indicate the transport layer address and/or transmission protocol corresponding to the application data unit. Optionally, the first transmission information includes but not limited to: IP quintuple, IP triplet, and the like.

Step 620, the policy control network element sends the first association information to the session management network element.

The matters that the session management network element is responsible for include but are not limited to: session establishment, modification and release; tunnel maintenance between UPF and AN; terminal device IP address allocation and management; selection and control of UPF functions; charging data collection and accounting Free interface support, etc. Exemplarily, in the 5G network system architecture, the session management network element can be implemented as an SMF. In other or future network system architectures, the session management network element may continue to use the name in the 5G network system architecture, or may have other names. It should be understood that these names should fall within the scope of protection of this application.

In the embodiment of the present application, after receiving the first association information sent by the application function, the policy control network element may send the first association information to the session management network element. For the description of the first associated information, please refer to the above-mentioned embodiments, and details will not be repeated here.

Afterwards, based on the received first association information, the session management network element may send information required for transmission control at the application data unit level to the user plane network element and the access network element respectively. In this embodiment of the present application, the session management network element may renumber at least one application data unit indicated by the first association information, and send the numbers corresponding to the at least one application data unit to the user plane network element and the access network element. element, so that in the subsequent transmission process of the downlink data packet, the network element of the user plane and the network element of the access network can use the serial number of the application data unit to identify the application data unit.

Based on this, in an example, as shown in FIG. 7 , step 621 is also included after the above step 620, the session management network element determines the second association information based on the first association information, and the second association information includes application data with an association relationship The numbers corresponding to the units respectively. That is to say, the session management network element renumbers the application data units, and replaces the first identification information respectively corresponding to at least one application data unit in the first association information with the numbers corresponding to at least one application data unit respectively, Thus, the second associated information is obtained. Exemplarily, the session management network element renumbers the application data unit whose IP quintuple is A and is identified as 1 to A1 (that is, the number of this application data unit is A1); the IP quintuple is B and is identified as The application data unit that is 1 is renumbered as B1 (that is, the number of this application data unit is B1).

Step 630, the session management network element sends the first identification information corresponding to the application data unit to the user plane network element.

The matters that the user plane network element is responsible for include but are not limited to: routing and forwarding of user plane data packets; user plane QoS processing; user usage information statistics and reporting; interaction with external data networks, etc. Exemplarily, in the 5G network system architecture, the user plane network element can be implemented as a UPF. In other or future network system architectures, the user plane network elements may continue to use the names in the 5G network system architecture, or may have other names. It should be understood that these names should fall within the scope of protection of this application.

After receiving the first association information sent by the policy control network element, the session management network element may send the first identification information corresponding to the application data unit in the first association information to the user plane network element, that is, send to the user plane network element First identification information respectively corresponding to at least one application data unit indicated by the first association information.

It can be seen from the above embodiment that the session management network element may renumber the application data unit. Based on this, in an example, as shown in FIG. The first identification information corresponding to the application data unit and the serial number corresponding to the application data unit are sent in metadata. That is to say, the first association information is used to indicate that at least one application data unit has an association relationship. When the session management network element renumbers the application data units, the session management network element assigns the at least one application data unit to Both the corresponding first identification information and the number are sent to the user plane network element.

Step 640, the session management network element sends the first association information to the network element of the access network.

After receiving the first association information sent by the policy control network element, the session management network element may also forward the first association information to the access network element. It should be understood that in step 640, the session management network element sends the first association information to the access network element, that is, the session management network element not only indicates to the access network element that at least one application data unit has The association relationship also indicates the first identification information corresponding to at least one application data unit to the network element of the access network; however, in the above step 630, what the session management network element sends to the user plane network element is the first identification information corresponding to the application data unit One identification information, that is, the session management network element indicates to the user plane network element the first identification information corresponding to at least one application data unit, without indicating to the user plane network element that at least one application data unit has an association relation.

It can be known from the above embodiment that the session management network element may renumber the application data unit. Based on this, in an example, as shown in FIG. The network element sends the second association information. That is to say, when the session management network element renumbers the application data unit, the session management network element sends the second association information to the access network element, and the second association information is used to indicate at least one application data unit There is association information among the data units, and the second association information includes serial numbers corresponding to the at least one application data unit.

It should be noted that the embodiment of the present application does not limit the order of execution of steps 630 and 640. In one example, the session management network element can perform steps 630 and 640 at the same time; in another example, the session management network element The element may perform step 630 first and then step 640; in another example, the session management network element may first perform step 640 and then perform step 630.

To sum up, the technical solution provided by the embodiment of the present application is helpful to realize the application data unit level transmission control on data by providing the identification information for identifying the application data unit. Moreover, in the embodiment of the present application, by providing an association relationship between at least one application data unit, it is helpful to carry out overall transmission control on the application data units with association relationship during the data transmission process, so as to ensure that the application data units can be timely Decoding is successfully completed successfully, meeting the synchronization requirements of audio and video playback and other services, and improving user experience.

On the basis of the embodiment in FIG. 6 and the embodiment in FIG. 7 , the overall control parameters of the application data units with the association relationship may also be provided to the network element of the access network. In the following, this method will be introduced and explained.

Please refer to FIG. 8 , which shows a flowchart of a transmission method provided by an embodiment of the present application. The method can be applied to the system architecture shown in the above-mentioned FIG. 1 and FIG. 2 , and the method can be based on the QoS model shown in FIG. 3 and the user plane protocol stack shown in FIG. 5 . The method may include at least some of the following steps.

In the embodiment of FIG. 8 , the above step 610 is realized as the following step 612 , the above step 620 is realized as the following step 622 , the above step 630 is realized as the following step 634 , and the above step 640 is realized as the following step 644 .

Step 612, the application function sends the first association information to the policy control network element.

For an introduction to the contents of the first associated information, please refer to the above-mentioned step 610, and details will not be repeated here.

In order to indicate to the policy control network element the control requirements of the application function for the application data unit, in an example, as shown in FIG. The information is used to indicate the association control requirements of the application data units having an association relationship. That is to say, the first requirement information corresponds to the first association information, the first association information is used to indicate the association between at least one application data unit, and the first requirement information is used to indicate that the application function is for the at least one application data unit as a whole control needs.

The embodiment of the present application does not limit the content of the first demand information. In an example, the first demand information includes but is not limited to at least one of the following: first arrival information, first interval information, first parameter information, and the like. The first arrival information is used to indicate that the application data units with the associated relationship arrive at the terminal device at the same time, or used to indicate that the application data units with the associated relationship arrive at the terminal device continuously and sequentially (or it can be said that "adjacently arrived at the terminal device") . The first interval information is used to indicate the maximum time interval for the application data units with the association relationship to arrive at the terminal device. The first parameter information is used to indicate the QoS parameters of the application data units with an association relationship, that is, the QoS parameters of at least one application data unit with an association relationship as a whole, such as transmission delay, bit error rate, and bit rate requirements wait.

Step 622, the policy control network element sends the first association information and the first control information to the session management network element, the first control information is used to indicate the association control parameters of the application data units with association relationship.

For an introduction to the policy control network element sending the first association information to the session management network element, please refer to the above step 620, and details will not be repeated here.

In addition to sending the first association information to the session management network element, the policy control network element may also send first control information to the session management network element, where the first control information is used to indicate the association control parameters of the application data units having an association relationship . That is to say, the first control information corresponds to the first association information, the first association information is used to indicate the association between at least one application data unit, and the first control information is used to indicate the overall association control of the at least one application data unit parameter.

The embodiment of the present application does not limit the content of the first control information. In an example, the first control information includes but is not limited to at least one of the following: second arrival information, second interval information, second parameter information, and the like. The second arrival information is used to indicate that the application data units with the associated relationship arrive at the terminal device at the same time, or used to indicate that the application data units with the associated relationship arrive at the terminal device continuously and sequentially (or it can be said that "adjacently arrived at the terminal device") . The second interval information is used to indicate the maximum time interval for the application data units with the association relationship to arrive at the terminal device. The second parameter information is used to indicate the QoS parameters of the application data units with an association relationship, that is, the QoS parameters of at least one application data unit with an association relationship as a whole, such as transmission delay, bit error rate, and bit rate requirements wait.

It should be noted that the first control information refers to the association control parameters determined by the policy control network element for the application data unit with association relationship, and the above-mentioned first requirement information refers to the association control parameters required by the application function for the application data unit with association relationship. Association control requirements for application data units of a relation. When the application function sends the first demand information to the policy control network element, the policy control network element may determine the first control information in combination with the first demand information, or may ignore the first demand information during the determination of the first control information, This embodiment of the present application does not limit it. Taking the policy control network element to determine the first control information in combination with the first demand information as an example, assuming that the first demand information includes the first arrival information and the first parameter information, and the first control information includes the second arrival information and the second parameter information, the policy The control network element may directly use the first arrival information as the second arrival information, and/or use the first parameter information as the second parameter information; or, the policy control network element may re-determine the second parameter information in combination with the first parameter information, For example, the first parameter information includes a bit error rate required by the application function, and the policy control network element may set the bit error rate in the second parameter information to be smaller than the bit error rate in the first parameter information.

Step 634, the session management network element sends the first identification information corresponding to the application data unit to the user plane network element.

For the description of step 634, please refer to the description of step 630 and step 632 above, and details will not be repeated here.

Step 644, the session management network element sends the first association information and the first control information to the network element of the access network.

For the introduction of the session management network element sending the first association information to the access network element, please refer to the introduction of the above step 640 and step 642, and no more details are given here.

In addition to sending the first association information to the access network element, the session management network element may also send first control information to the access network element, so as to indicate to the access network element at least one The control parameters of the application data unit as a whole. For an introduction to the content of the first control information, please refer to the above step 622, and details will not be repeated here.

To sum up, the technical solution provided by the embodiment of the present application implements an association control parameter for at least one application data unit that has an association relationship as a whole, so as to implement an application data unit that has an association relationship between network elements of the access network. Carry out the process of overall transmission control and provide effective and targeted reference information.

Based on the control plane signaling transmission methods described in the above-mentioned embodiment in FIG. 6 to the embodiment in FIG. 8 , the network elements of the user plane and the network elements of the access network can transmit downlink data packets. Next, the transmission process of the downlink data packet will be introduced and described.

Please refer to FIG. 9 , which shows a flowchart of a transmission method provided by an embodiment of the present application. The method can be applied to the system architecture shown in the above-mentioned FIG. 1 and FIG. 2 , and the method can be based on the QoS model shown in FIG. 3 and the user plane protocol stack shown in FIG. 5 . The method may include at least some of the following steps.

Step 650, the user plane network element sends the downlink data packet to the access network element.

The user plane network element sends the downlink data packet to the access network element when there is a need to transmit the downlink data packet to the terminal device. In the embodiment of the present application, the user plane network element can read the application layer data of the downlink data packet, and match the application layer data with the first identification information corresponding to the application data unit, so as to add the The information identifying the application data unit, so that after the network element of the access network receives the downlink data packet, it can realize the transmission control at the application data unit level based on the packet header of the downlink data packet.

Based on the foregoing embodiment in FIG. 6 , the user plane network element receives the first identification information corresponding to the application data unit. Therefore, when the downlink data packet matches the first identification information, the user plane network element adds the first identification information to the packet header of the downlink data packet.

Based on the foregoing embodiment in FIG. 7 , the user plane network element receives the first identification information and number corresponding to the application data unit. Therefore, when the downlink data packet matches the first identification information, the user plane network element adds the serial number of the application data unit to the packet header of the downlink data packet.

Step 660, the network element of the access network sends the downlink data packet to the terminal device based on the first transmission mode.

After receiving the downlink data packet sent by the user plane network element, the network element of the access network determines the first transmission mode based on the packet header of the downlink data packet, and sends the downlink data packet to the terminal device based on the first transmission mode. In order to implement data transmission control at the application data unit level and to implement overall transmission control on application data units with association relationships, the access network element may determine the first association information or the second association information based on the first association information or the second association information. transfer method. Optionally, the first transmission mode meets at least one of the following transmission requirements: the application data units with the association relationship arrive at the terminal device at the same time, or the application data units with the association relationship arrive at the terminal device continuously and sequentially; the application data units with the association relationship The unit arrives at the terminal device within the first time interval; the QoS parameter of the application data unit with the association relationship is the first QoS parameter.

Based on the foregoing embodiment in FIG. 6 , the network element of the access network receives first association information, where the first association information includes first identification information respectively corresponding to application data units having an association relationship. Therefore, when the packet header of the downlink data packet includes the first identification information, the network element of the access network determines the first transmission mode based on the first association information. In addition, based on the above-mentioned embodiment in FIG. 8, the network element of the access network may also receive the first control information, so that the network element of the access network may combine the first control information when determining the first transmission mode, that is, the network element of the access network may receive the first control information. The network element determines the first transmission mode based on the first association information and the first control information.

Based on the foregoing embodiment in FIG. 7 , the network element of the access network receives the second association information, where the second association information includes serial numbers corresponding to application data units having an association relationship. Therefore, in the case that the packet header of the downlink data packet includes a serial number, the network element of the access network determines the first transmission mode based on the second association information. In addition, based on the above-mentioned embodiment in FIG. 8, the network element of the access network may also receive the first control information, so that the network element of the access network may combine the first control information when determining the first transmission mode, that is, the network element of the access network may receive the first control information. The network element determines the first transmission mode based on the second association information and the first control information.

To sum up, the technical solutions provided by the embodiments of the present application control the overall transmission of application data units with associated relationships, for example, to ensure that the application data units with associated relationships are simultaneously, or continuously and sequentially, or within a certain period of time. Arrive at the terminal device within a time interval, or treat the application data units with related relationships as a whole to guarantee the transmission delay, bit error rate, etc., to ensure that the application data units can be decoded in a timely and successful manner.

It should be noted that, in the above embodiments, the transmission method provided in the embodiments of the present application is carried out from the perspective of interaction among application functions, policy control network elements, session management network elements, user plane network elements, and access network elements. Introductory instructions. In the above-mentioned embodiments, each step related to the execution of the policy control network element can be separately implemented as a transmission method on the side of the policy control network element; each step related to the execution of the session management network element can be separately implemented as a transmission method on the side of the session management network element ; The various steps performed by the network elements of the user plane can be independently implemented as a transmission method on the user plane side; the various steps performed by the network elements of the access network can be independently implemented as a transmission method on the network element side of the access network.

The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Please refer to FIG. 10 , which shows a block diagram of a transmission device provided by an embodiment of the present application. The device has the function of realizing the above-mentioned method example on the policy control network element side, and the function may be realized by hardware, and may also be realized by executing corresponding software on the hardware. The device may be the policy control network element introduced above, or may be set in the policy control network element. As shown in FIG. 10 , the apparatus 1000 may include: a first receiving module 1010 and a first sending module 1020 .

The first receiving module 1010 is configured to receive first association information sent by an application function, where the first association information includes first identification information corresponding to application data units with an association relationship, and the first identification information is used to identify the application data unit.

The first sending module 1020 is configured to send the first association information to a session management network element.

In an example, the first identification information includes at least one of the following: first identification information, used to identify the application data unit; first type information, used to indicate the type of the application data unit; the first transmission Information, used to indicate the transport layer address and/or transport protocol corresponding to the application data unit.

In an example, the first receiving module 1010 is further configured to: receive first requirement information sent by the application function, where the first requirement information is used to indicate the association control of the application data units having an association relationship need.

In an example, the first demand information includes at least one of the following: first arrival information, used to indicate that the application data units with the association relationship arrive at the terminal device at the same time, or used to indicate that the application data units with the association relationship The application data units arrive at the terminal device continuously and sequentially; the first interval information is used to indicate the maximum time interval for the application data unit with the association relationship to arrive at the terminal device; the first parameter information is used to indicate the application with the association relationship Quality of Service (QoS) parameters for the data unit.

In an example, the first sending module 1020 is further configured to: send first control information to the session management network element, where the first control information is used to indicate the association of the application data units with the association relationship Control parameters.

In an example, the first control information includes at least one of the following: second arrival information, used to indicate that the associated application data units arrive at the terminal device at the same time, or used to indicate that the associated application data units The application data units arrive at the terminal device continuously and sequentially; the second interval information is used to indicate the maximum time interval for the application data unit with the association relationship to arrive at the terminal device; the second parameter information is used to indicate the application with the association relationship QoS parameters of the data unit.

Please refer to FIG. 11 , which shows a block diagram of a transmission device provided by an embodiment of the present application. The device has the function of realizing the above-mentioned method example on the side of the session management network element, and the function may be realized by hardware, and may also be realized by executing corresponding software on the hardware. The device may be the session management network element introduced above, or may be set in the session management network element. As shown in FIG. 11 , the apparatus 1100 may include: a second receiving module 1110 .

The second receiving module 1110 is configured to receive first association information sent by a policy control network element, where the first association information includes first identification information corresponding to application data units with an association relationship, and the first identification information is used for The application data unit is identified.

In one example, as shown in FIG. 12 , the apparatus 1100 further includes: a first determination module 1120, configured to determine second association information based on the first association information, the second association information including the Numbers corresponding to the application data units of the association relationship.

In an example, as shown in FIG. 12 , the apparatus 1100 further includes: a second sending module 1130, configured to send at least one of the following information to a user plane network element: first identification information corresponding to the application data unit, The serial number corresponding to the application data unit.

In an example, as shown in FIG. 12 , the apparatus 1100 further includes: a second sending module 1130, configured to send any one of the following information to an access network element: the first association information, the second association information .

In an example, the second receiving module 1110 is further configured to receive first control information sent by the policy control network element, where the first control information is used to indicate the association of the application data units with the association relationship Control parameters; the second sending module 1130, configured to send the first control information to an access network element.

In an example, the first control information includes at least one of the following: second arrival information, used to indicate that the application data units with the association relationship arrive at the terminal device at the same time, or used to indicate that the at least one application data unit The units arrive at the terminal device continuously and sequentially; the second interval information is used to indicate the maximum time interval for the application data unit with the association relationship to arrive at the terminal device; the second parameter information is used to indicate the application data unit with the association relationship The quality of service QoS parameter.

Please refer to FIG. 13 , which shows a block diagram of a transmission device provided by an embodiment of the present application. The device has the function of implementing the above example method on the user plane network element side, and the function may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The device may be the user plane network element introduced above, or may be set in the user plane network element. As shown in FIG. 13 , the apparatus 1300 may include: a third receiving module 1310 .

The third receiving module 1310 is configured to receive the first identification information corresponding to the application data unit sent by the session management network element, and/or the serial number corresponding to the application data unit; the first identification information is used to identify the application data unit.

In one example, as shown in FIG. 14 , the apparatus 1300 further includes: a third sending module 1320, configured to send a downlink data packet to an access network element; wherein, between the downlink data packet and the first If the identification information matches, the header of the downlink data packet includes the first identification information, or the header of the downlink data packet includes the serial number.

Please refer to FIG. 15 , which shows a block diagram of a transmission device provided by an embodiment of the present application. The device has the function of realizing the above-mentioned method example on the network element side of the access network, and the function may be realized by hardware, or may be realized by executing corresponding software on the hardware. The device may be the network element of the access network introduced above, or may be set in the network element of the access network. As shown in FIG. 15 , the apparatus 1500 may include: a fourth receiving module 1510 .

The fourth receiving module 1510 is configured to receive the first association information or the second association information sent by the session management network element; wherein, the first association information includes the first identification information respectively corresponding to the application data units having the association relationship, so The first identification information is used to identify the application data unit; the second association information includes numbers corresponding to the application data units having an association relationship.

In an example, the fourth receiving module 1510 is further configured to: receive first control information sent by the session management network element, where the first control information is used to indicate the Associated control parameters.

In one example, as shown in FIG. 16 , the apparatus 1500 further includes: a fifth receiving module 1520, configured to receive a downlink data packet sent by a user plane network element; a fourth sending module 1530, configured to , sending the downlink data packet to the terminal device; wherein, when the header of the downlink data packet includes the first identification information, the first transmission method is based on the first association information and/or the first determined by control information; in the case that the packet header of the downlink data packet includes the serial number, the first transmission mode is determined based on the second association information and/or the first control information.

In an example, the first transmission mode meets at least one of the following transmission requirements: the application data units with the association relationship arrive at the terminal device at the same time, or the application data units with the association relationship arrive continuously and sequentially The terminal device; the application data unit with the association relationship arrives at the terminal device within a first time interval; the QoS parameter of the application data unit with the association relationship is a first QoS parameter.

It should be noted that when the device provided by the above embodiment realizes its functions, it only uses the division of the above-mentioned functional modules as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.

Regarding the apparatus in the above embodiments, the specific manner in which each module executes operations has been described in detail in the embodiments related to the method, and will not be described in detail here.

Please refer to FIG. 17 , which shows a schematic structural diagram of a policy control network element 170 provided by an embodiment of the present application. For example, the policy control network element may be used to implement the above transmission method on the policy control network element side. Specifically, the policy control network element 170 may include: a processor 171, and a transceiver 172 connected to the processor 171; wherein:

The processor 171 includes one or more processing cores, and the processor 171 executes various functional applications and information processing by running software programs and modules.

Transceiver 172 includes a receiver and a transmitter. Optionally, the transceiver 172 is a communication chip.

In an example, the policy control network element 170 further includes: a memory and a bus. The memory is connected to the processor through a bus. The memory may be used to store a computer program, and the processor is used to execute the computer program, so as to implement various steps executed by the policy control network element in the above method embodiments.

In addition, the memory can be implemented by any type of volatile or non-volatile storage device or their combination, and the volatile or non-volatile storage device includes but is not limited to: RAM (Random-Access Memory, Random Access Memory) and ROM (Read-Only Memory, read-only memory), EPROM (Erasable Programmable Read-Only Memory, erasable programmable read-only memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, electrically erasable programmable read-only memory ), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory, CD-ROM), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cartridges, tapes, disk storage or other magnetic storage devices.

The transceiver 172 is configured to receive first association information sent by an application function, where the first association information includes first identification information corresponding to application data units with an association relationship, and the first identification information is used to identify the the application data unit;

The transceiver 172 is configured to send the first association information to a session management network element.

In an example, the transceiver 172 is further configured to receive first requirement information sent by the application function, where the first requirement information is used to indicate an association control requirement of the application data units having an association relationship.

In an example, the transceiver 172 is further configured to send first control information to the session management network element, where the first control information is used to indicate an association control parameter of the application data unit having an association relationship.

Please refer to FIG. 18 , which shows a schematic structural diagram of a session management network element 180 provided by an embodiment of the present application. For example, the session management network element may be used to implement the above transmission method on the session management network element side. Specifically, the session management network element 180 may include: a processor 181, and a transceiver 182 connected to the processor 181; wherein:

The processor 181 includes one or more processing cores, and the processor 181 executes various functional applications and information processing by running software programs and modules.

Transceiver 182 includes a receiver and a transmitter. Optionally, the transceiver 182 is a communication chip.

In an example, the session management network element 180 further includes: a memory and a bus. The memory is connected to the processor through a bus. The memory may be used to store a computer program, and the processor is used to execute the computer program, so as to implement various steps performed by the session management network element in the foregoing method embodiments.

In addition, memory may be implemented by any type or combination of volatile or nonvolatile storage devices including, but not limited to, RAM and ROM, EPROM, EEPROM, flash memory, or other Solid state storage is its technology, CD-ROM, DVD or other optical storage, tape cartridge, magnetic tape, magnetic disk storage or other magnetic storage devices.

The transceiver 182 is configured to receive first association information sent by a policy control network element, where the first association information includes first identification information corresponding to application data units with an association relationship, and the first identification information is used for The application data unit is identified.

In an example, the processor 181 is configured to determine second association information based on the first association information, where the second association information includes serial numbers corresponding to the application data units having an association relationship.

In an example, the transceiver 182 is further configured to send at least one of the following information to a user plane network element: first identification information corresponding to the application data unit, and a serial number corresponding to the application data unit.

In an example, the transceiver 182 is further configured to send any one of the following information to an access network element: the first association information and the second association information.

In an example, the transceiver 182 is further configured to: receive first control information sent by the policy control network element, where the first control information is used to indicate the association control of the application data units with the association relationship parameter; sending the first control information to an access network element.

Please refer to FIG. 19 , which shows a schematic structural diagram of a user plane network element 190 provided by an embodiment of the present application. For example, the user plane network element may be used to implement the above transmission method on the user plane network element side. Specifically, the user plane network element 190 may include: a processor 191, and a transceiver 192 connected to the processor 191; wherein:

The processor 191 includes one or more processing cores, and the processor 191 executes various functional applications and information processing by running software programs and modules.

Transceiver 192 includes a receiver and a transmitter. Optionally, the transceiver 192 is a communication chip.

In an example, the user plane network element 190 further includes: a memory and a bus. The memory is connected to the processor through a bus. The memory may be used to store a computer program, and the processor is used to execute the computer program, so as to implement various steps performed by the user plane network element in the foregoing method embodiments.

The transceiver 192 is configured to receive the first identification information corresponding to the application data unit sent by the session management network element, and/or the serial number corresponding to the application data unit; the first identification information is used to identify the application data unit.

In an example, the transceiver 192 is further configured to send a downlink data packet to an access network element; wherein, when the downlink data packet matches the first identification information, the downlink data packet The packet header of the downlink data packet includes the first identification information, or the packet header of the downlink data packet includes the serial number.

Please refer to FIG. 20 , which shows a schematic structural diagram of a terminal device 200 provided by an embodiment of the present application. For example, the terminal device may be used to implement the above-mentioned transmission method on the terminal device side. Specifically, the terminal device 200 may include: a processor 201, and a transceiver 202 connected to the processor 201; wherein:

The processor 201 includes one or more processing cores, and the processor 201 executes various functional applications and information processing by running software programs and modules.

Transceiver 202 includes a receiver and a transmitter. Optionally, the transceiver 202 is a communication chip.

In an example, the terminal device 200 further includes: a memory and a bus. The memory is connected to the processor through a bus. The memory may be used to store a computer program, and the processor is used to execute the computer program, so as to implement various steps performed by the terminal device in the foregoing method embodiments.

The transceiver 202 is configured to receive the first association information or the second association information sent by the session management network element; wherein, the first association information includes first identification information corresponding to application data units having an association relationship, and the The first identification information is used to identify the application data unit; the second association information includes numbers corresponding to the application data units having an association relationship.

In an example, the transceiver 202 is configured to receive first control information sent by the session management network element, where the first control information is used to indicate an association control parameter of the application data unit having an association relationship.

In an example, the transceiver 202 is further configured to receive a downlink data packet sent by a user plane network element; based on a first transmission mode, send the downlink data packet to the terminal device; wherein, in the downlink data packet In the case where the packet header includes the first identification information, the first transmission method is determined based on the first association information and/or the first control information; when the packet header of the downlink data packet includes the number Next, the first transmission mode is determined based on the second association information and/or the first control information.

The embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a policy control network element, so as to implement the above policy control network element side the transmission method.

The embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a session management network element, so as to realize the above-mentioned session management network element side the transmission method.

The embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a user plane network element, so as to realize the above-mentioned user plane network element side the transmission method.

The embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of an access network element, so as to implement the above-mentioned access network The transport method on the element side.

The embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on the policy control network element, it is used to realize the transmission on the side of the policy control network element as described above method.

The embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on the session management network element, it is used to realize the above-mentioned transmission on the session management network element side method.

The embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on the user plane network element, it is used to realize the above-mentioned transmission at the user plane network element side method.

The embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on the network element of the access network, it is used to implement the above-mentioned the transmission method.

The embodiment of the present application also provides a computer program product, which is used to implement the transmission method on the policy control network element side when the computer program product runs on the policy control network element.

The embodiment of the present application also provides a computer program product, which is used to implement the transmission method on the session management network element side when the computer program product runs on the session management network element.

The embodiment of the present application also provides a computer program product, which is used to implement the transmission method on the user plane network element side when the computer program product runs on the user plane network element.

The embodiment of the present application also provides a computer program product, which is used to implement the above-mentioned transmission method on the network element side of the access network when the computer program product runs on the network element of the access network.

Those skilled in the art should be aware that, in the foregoing one or more examples, the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above are only exemplary embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the protection of the application. within range.

Claims

A transmission method, characterized in that it is applied to a policy control network element, and the method includes:

receiving first association information sent by the application function, where the first association information includes first identification information respectively corresponding to application data units having an association relationship, where the first identification information is used to identify the application data units;

Send the first association information to a session management network element.
The method according to claim 1, wherein the first identification information includes at least one of the following:

The first identification information is used to identify the application data unit;

first type information, used to indicate the type of the application data unit;

The first transmission information is used to indicate a transport layer address and/or a transport protocol corresponding to the application data unit.
The method according to claim 1 or 2, characterized in that the method further comprises:

The first requirement information sent by the application function is received, where the first requirement information is used to indicate the association control requirement of the application data units having an association relationship.
The method according to claim 3, wherein the first requirement information includes at least one of the following:

The first arrival information is used to indicate that the application data units with the association relationship arrive at the terminal device at the same time, or is used to indicate that the application data units with the association relationship arrive at the terminal device continuously and sequentially;

The first interval information is used to indicate the maximum time interval for the application data unit with the association relationship to arrive at the terminal device;

The first parameter information is used to indicate the quality of service (QoS) parameter of the application data unit with the association relationship.
The method according to any one of claims 1 to 4, characterized in that after receiving the first associated information sent by the application function, further comprising:

Sending first control information to the session management network element, where the first control information is used to indicate an association control parameter of the application data unit having an association relationship.
The method according to claim 5, wherein the first control information includes at least one of the following:

The second arrival information is used to indicate that the application data units with the association relationship arrive at the terminal device at the same time, or is used to indicate that the application data units with the association relationship arrive at the terminal device continuously and sequentially;

The second interval information is used to indicate the maximum time interval for the application data unit with the association relationship to arrive at the terminal device;

The second parameter information is used to indicate the QoS parameters of the associated application data units.
A transmission method, characterized in that it is applied to a session management network element, and the method includes:

The first association information sent by the policy control network element is received, where the first association information includes first identification information respectively corresponding to the application data units having an association relationship, and the first identification information is used to identify the application data units.
The method according to claim 7, wherein the first identification information includes at least one of the following:

The first identification information is used to identify the application data unit;

first type information, used to indicate the type of the application data unit;

The first transmission information is used to indicate a transport layer address and/or a transport protocol corresponding to the application data unit.
The method according to claim 7 or 8, wherein after receiving the first association information sent by the policy control network element, further comprising:

Based on the first association information, second association information is determined, where the second association information includes serial numbers corresponding to the application data units having an association relationship.
The method according to any one of claims 7 to 9, wherein after receiving the first association information sent by the policy control network element, further comprising:

Sending at least one of the following pieces of information to the user plane network element: first identification information corresponding to the application data unit, and a serial number corresponding to the application data unit.
The method according to any one of claims 7 to 10, wherein after receiving the first association information sent by the policy control network element, further comprising:

Send any one of the following information to a network element of the access network: the first associated information and the second associated information.
The method according to any one of claims 7 to 11, further comprising:

receiving first control information sent by the policy control network element, where the first control information is used to indicate the association control parameters of the application data units having an association relationship;

Send the first control information to an access network element.
The method according to claim 12, wherein the first control information includes at least one of the following:

The second arrival information is used to indicate that the associated application data units arrive at the terminal device at the same time, or is used to indicate that the at least one application data unit arrives at the terminal device continuously and sequentially;

The second interval information is used to indicate the maximum time interval for the application data unit with the association relationship to arrive at the terminal device;

The second parameter information is used to indicate the quality of service (QoS) parameters of the associated application data units.
A transmission method, characterized in that it is applied to a user plane network element, the method comprising:

Receive the first identification information corresponding to the application data unit sent by the session management network element, and/or the serial number corresponding to the application data unit; the first identification information is used to identify the application data unit.
The method according to claim 14, wherein the first identification information includes at least one of the following:

The first identification information is used to identify the application data unit;

first type information, used to indicate the type of the application data unit;

The first transmission information is used to indicate a transport layer address and/or a transport protocol corresponding to the application data unit.
The method according to claim 14 or 15, wherein the first identification information corresponding to the application data unit sent by the receiving session management network element, and/or, after the number corresponding to the application data unit, further includes :

Send downlink data packets to network elements of the access network;

Wherein, when the downlink data packet matches the first identification information, the header of the downlink data packet includes the first identification information, or, the header of the downlink data packet includes the serial number.
A transmission method, characterized in that it is applied to an access network element, and the method includes:

receiving the first association information or the second association information sent by the session management network element;

Wherein, the first association information includes the first identification information corresponding to the application data units with the association relationship, and the first identification information is used to identify the application data units; the second association information includes the The numbers corresponding to the application data units of the relationship.
The method according to claim 17, wherein the first identification information includes at least one of the following:

The first identification information is used to identify the application data unit;

first type information, used to indicate the type of the application data unit;

The first transmission information is used to indicate a transport layer address and/or a transport protocol corresponding to the application data unit.
The method according to claim 17 or 18, further comprising:

receiving first control information sent by the session management network element, where the first control information is used to indicate an association control parameter of the application data unit having an association relationship.
The method according to claim 19, wherein the first control information includes at least one of the following:

The second arrival information is used to indicate that the associated application data units arrive at the terminal device at the same time, or is used to indicate that the at least one application data unit arrives at the terminal device continuously and sequentially;

The second interval information is used to indicate the maximum time interval for the application data unit with the association relationship to arrive at the terminal device;

The second parameter information is used to indicate the quality of service (QoS) parameters of the associated application data units.
The method according to any one of claims 17 to 20, further comprising:

Receive the downlink data packet sent by the user plane network element;

Based on the first transmission mode, sending the downlink data packet to the terminal device;

Wherein, when the packet header of the downlink data packet includes the first identification information, the first transmission mode is determined based on the first association information and/or first control information; When the header of the packet includes the serial number, the first transmission mode is determined based on the second association information and/or the first control information.
The method according to claim 21, wherein the first transmission mode meets at least one of the following transmission requirements:

The application data units with the associated relationship arrive at the terminal device at the same time, or the application data units with the associated relationship arrive at the terminal device continuously and sequentially;

The application data unit with the association relationship arrives at the terminal device within a first time interval;

The QoS parameter of the associated application data unit is the first QoS parameter.
A transmission device, characterized in that it is set on a policy control network element, and the device includes:

The first receiving module is configured to receive the first association information sent by the application function, the first association information includes the first identification information corresponding to the application data units with the association relationship, and the first identification information is used to identify the application data unit;

A first sending module, configured to send the first association information to a session management network element.
The device according to claim 23, wherein the first identification information includes at least one of the following:

The first identification information is used to identify the application data unit;

first type information, used to indicate the type of the application data unit;

The first transmission information is used to indicate a transport layer address and/or a transport protocol corresponding to the application data unit.
The device according to claim 23 or 24, wherein the first receiving module is also used for:

The first requirement information sent by the application function is received, where the first requirement information is used to indicate the association control requirement of the application data units having an association relationship.
The device according to claim 25, wherein the first requirement information includes at least one of the following:

The first arrival information is used to indicate that the application data units with the association relationship arrive at the terminal device at the same time, or is used to indicate that the application data units with the association relationship arrive at the terminal device continuously and sequentially;

The first interval information is used to indicate the maximum time interval for the application data unit with the association relationship to arrive at the terminal device;

The first parameter information is used to indicate the quality of service (QoS) parameter of the application data unit with the association relationship.
The device according to any one of claims 23 to 26, wherein the first sending module is further configured to:

Sending first control information to the session management network element, where the first control information is used to indicate an association control parameter of the application data unit having an association relationship.
The device according to claim 27, wherein the first control information includes at least one of the following:

The second arrival information is used to indicate that the application data units with the association relationship arrive at the terminal device at the same time, or is used to indicate that the application data units with the association relationship arrive at the terminal device continuously and sequentially;

The second interval information is used to indicate the maximum time interval for the application data unit with the association relationship to arrive at the terminal device;

The second parameter information is used to indicate the QoS parameters of the associated application data units.
A transmission device, characterized in that it is set on a session management network element, and the device includes:

The second receiving module is configured to receive the first association information sent by the policy control network element, the first association information includes the first identification information corresponding to the application data units with the association relationship, and the first identification information is used to identify The application data unit.
The device according to claim 29, wherein the first identification information includes at least one of the following:

The first identification information is used to identify the application data unit;

first type information, used to indicate the type of the application data unit;

The first transmission information is used to indicate a transport layer address and/or a transport protocol corresponding to the application data unit.
The device according to claim 29 or 30, wherein the device further comprises:

The first determining module is configured to determine second association information based on the first association information, where the second association information includes numbers corresponding to the application data units having an association relationship.
The device according to any one of claims 29 to 31, wherein the device further comprises:

The second sending module is configured to send at least one of the following information to a user plane network element: first identification information corresponding to the application data unit, and a serial number corresponding to the application data unit.
The device according to any one of claims 29 to 32, wherein the device further comprises:

The second sending module is configured to send any one of the following information to an access network element: the first associated information and the second associated information.
Apparatus according to any one of claims 29 to 33, wherein

The second receiving module is further configured to receive first control information sent by the policy control network element, where the first control information is used to indicate the association control parameters of the application data units having an association relationship;

The second sending module is configured to send the first control information to an access network element.
The device according to claim 34, wherein the first control information includes at least one of the following:

The second arrival information is used to indicate that the associated application data units arrive at the terminal device at the same time, or is used to indicate that the at least one application data unit arrives at the terminal device continuously and sequentially;

The second interval information is used to indicate the maximum time interval for the application data unit with the association relationship to arrive at the terminal device;

The second parameter information is used to indicate the quality of service (QoS) parameters of the associated application data units.
A transmission device, characterized in that it is set on a user plane network element, and the device includes:

The third receiving module is configured to receive the first identification information corresponding to the application data unit sent by the session management network element, and/or the serial number corresponding to the application data unit; the first identification information is used to identify the application data unit.
The device according to claim 36, wherein the first identification information includes at least one of the following:

The first identification information is used to identify the application data unit;

first type information, used to indicate the type of the application data unit;

The first transmission information is used to indicate a transport layer address and/or a transport protocol corresponding to the application data unit.
The device according to claim 36 or 37, wherein the device further comprises:

A third sending module, configured to send downlink data packets to network elements of the access network;

Wherein, when the downlink data packet matches the first identification information, the header of the downlink data packet includes the first identification information, or, the header of the downlink data packet includes the serial number.
A transmission device, characterized in that it is set on an access network element, and the device includes:

A fourth receiving module, configured to receive the first associated information or the second associated information sent by the session management network element;

Wherein, the first association information includes the first identification information corresponding to the application data units with the association relationship, and the first identification information is used to identify the application data units; the second association information includes the The numbers corresponding to the application data units of the relationship.
The device according to claim 39, wherein the first identification information includes at least one of the following:

The first identification information is used to identify the application data unit;

first type information, used to indicate the type of the application data unit;

The first transmission information is used to indicate a transport layer address and/or a transport protocol corresponding to the application data unit.
The device according to claim 39 or 40, wherein the fourth receiving module is also used for:

receiving first control information sent by the session management network element, where the first control information is used to indicate an association control parameter of the application data unit having an association relationship.
The device according to claim 41, wherein the first control information includes at least one of the following:

The second arrival information is used to indicate that the associated application data units arrive at the terminal device at the same time, or is used to indicate that the at least one application data unit arrives at the terminal device continuously and sequentially;

The second interval information is used to indicate the maximum time interval for the application data unit with the association relationship to arrive at the terminal device;

The second parameter information is used to indicate the quality of service (QoS) parameters of the associated application data units.
The device according to any one of claims 39 to 42, wherein the device further comprises:

The fifth receiving module is configured to receive the downlink data packet sent by the user plane network element;

A fourth sending module, configured to send the downlink data packet to the terminal device based on the first transmission mode;

Wherein, when the packet header of the downlink data packet includes the first identification information, the first transmission mode is determined based on the first association information and/or first control information; When the header of the packet includes the serial number, the first transmission mode is determined based on the second association information and/or the first control information.
The device according to claim 43, wherein the first transmission mode meets at least one of the following transmission requirements:

The application data units with the associated relationship arrive at the terminal device at the same time, or the application data units with the associated relationship arrive at the terminal device continuously and sequentially;

The application data unit with the association relationship arrives at the terminal device within a first time interval;

The QoS parameter of the associated application data unit is the first QoS parameter.
A policy control network element, characterized in that the policy control network element includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to receive first association information sent by an application function, where the first association information includes first identification information corresponding to application data units with an association relationship, and the first identification information is used to identify the application data unit;

The transceiver is further configured to send the first association information to a session management network element.
A session management network element, characterized in that the session management network element includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to receive first association information sent by a policy control network element, where the first association information includes first identification information corresponding to application data units with an association relationship, and the first identification information is used to identify The application data unit.
A user plane network element, characterized in that the user plane network element includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to receive the first identification information corresponding to the application data unit sent by the session management network element, and/or the number corresponding to the application data unit; the first identification information is used to identify the application data unit.
An access network element, characterized in that the access network element includes: a processor, and a transceiver connected to the processor; wherein:

The transceiver is configured to receive the first association information or the second association information sent by the session management network element;

Wherein, the first association information includes first identification information respectively corresponding to the application data units with association relationship, and the first identification information is used to identify the application data units; the second association information includes the The numbers corresponding to the application data units of the relationship.
A computer-readable storage medium, wherein a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a policy control network element, so as to implement the method described in any one of claims 1 to 6. the transmission method described above.
A computer-readable storage medium, wherein a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a session management network element, so as to implement the method described in any one of claims 7 to 13. the transmission method described above.
A computer-readable storage medium, wherein a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a user plane network element, so as to implement the method described in any one of claims 14 to 16. the transmission method described above.
A computer-readable storage medium, wherein a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of an access network element, so as to implement any one of claims 17 to 22. the transfer method described.