CN117397278A

CN117397278A - Transmission method, device, equipment and storage medium

Info

Publication number: CN117397278A
Application number: CN202180098731.2A
Authority: CN
Inventors: 郭雅莉; 付喆; 徐婧
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2024-01-12
Also published as: WO2023010360A1

Abstract

A transmission method, a device, equipment and a storage medium relate to the technical field of communication. The method comprises the following steps: the application function sends first association information to the policy control network element, wherein the first association information comprises first identification information (610) corresponding to the application data units with association relation respectively; the policy control network element sends first association information to the session management network element (620); the session management network element sends first identification information (630) corresponding to the application data unit to the user plane network element; the session management network element sends the first association information to the access network element (640). By providing the association relation between at least one application data unit, the method is beneficial to carrying out overall transmission control on the application data unit with the association relation in the data transmission process, ensures that the application data unit can complete decoding timely and successfully, meets the synchronous requirements of services such as audio and video playing and the like, and improves the user experience.

Description

Transmission method, device, equipment and storage medium

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a transmission method, a transmission device, a transmission equipment and a storage medium.

Background

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

The terminal device is connected with the (wireless) access network through Uu interface to exchange access layer information or transmit wireless data. The core network comprises: AMF (Access and Mobility Management Function, access and mobility management functions), SMF (Session Management Function, session management functions), PCF (Policy Control Function, policy control functions), UPF (User Plane Function, user plane functions), and the like. The terminal equipment establishes non-access stratum (None Access Stratum, NAS) connection with the AMF through an N1 interface, and interacts NAS information; the AMF is responsible for forwarding session management related messages between the terminal equipment and the SMF in addition to mobility management of the terminal equipment; PCF is in charge of making related strategies such as mobility management, session management, charging and the like for terminal equipment; the UPF performs Data transmission with an external Data Network (DN) through an N6 interface, and performs Data transmission with a (wireless) access Network through an N3 interface.

However, further discussion and study is needed as to how the transmission control of data between the terminal device, the (radio) access network and the core network is performed.

Disclosure of Invention

The embodiment of the application provides a transmission method, a transmission device, transmission equipment and a storage medium. The technical scheme is as follows:

in one aspect, an embodiment of the present application provides a transmission method applied to a policy control network element, where the method includes:

receiving first association information sent by an application function, wherein the first association information comprises first identification information corresponding to application data units with association relation respectively, and the first identification information is used for identifying the application data units;

and sending 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, where the method includes:

and receiving first association information sent by a strategy control network element, wherein the first association information comprises first identification information respectively corresponding to application data units with association relation, and the first identification information is used for identifying the application data units.

In yet another aspect, an embodiment of the present application provides a transmission method, applied to a user plane network element, where the method includes:

receiving first identification information corresponding to an application data unit sent by a session management network element and/or a number corresponding to the application data unit; the first identification information is used for identifying the application data unit.

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

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

the first association information comprises first identification information corresponding to application data units with association relation respectively, and the first identification information is used for identifying the application data units; the second association information comprises numbers corresponding to the application data units with association relation respectively.

In yet another aspect, an embodiment of the present application provides a transmission device, configured to be disposed in a policy control network element, where the device includes:

the first receiving module is used for receiving first association information sent by an application function, wherein the first association information comprises first identification information respectively corresponding to application data units with association relation, and the first identification information is used for identifying the application data units;

and the first sending module is used for sending the first association information to the session management network element.

In still another aspect, an embodiment of the present application provides a transmission device, provided in a session management network element, where the device includes:

the second receiving module is used for receiving first association information sent by the strategy control network element, the first association information comprises first identification information corresponding to application data units with association relations, and the first identification information is used for identifying the application data units.

In yet another aspect, an embodiment of the present application provides a transmission device, configured to be disposed in a user plane network element, where the device includes:

the third receiving module is used for receiving 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 for identifying the application data unit.

In yet another aspect, an embodiment of the present application provides a transmission device, configured to be disposed in an access network element, where the device includes:

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

In yet 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 coupled 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 association relationships, and the first identification information is used to identify the application data units;

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

In yet 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 coupled 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 having an association relationship, where the first identification information is used to identify the application data units.

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 coupled to the processor; wherein:

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

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

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

In yet another aspect, an embodiment of the present application provides a computer readable storage medium, where a computer program is stored, where the computer program is configured to be executed by a processor of a policy control network element to implement a transmission method on a policy control network element side as described above.

In yet another aspect, an embodiment of the present application provides a computer readable storage medium, where a computer program is stored, where the computer program is configured to be executed by a processor of a session management network element, so as to implement a transmission method on a session management network element side as described above.

In yet another aspect, an embodiment of the present application provides a computer readable storage medium, where a computer program is stored, where the computer program is configured to be executed by a processor of a user plane network element, so as to implement a transmission method on a user plane network element side as described above.

In yet another aspect, an embodiment of the present application provides a computer readable storage medium, where a computer program is stored, where the computer program is configured to be executed by a processor of an access network element to implement a transmission method on an access network element side, as described above.

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

In yet another aspect, an embodiment of the present application provides a chip, where the chip includes a programmable logic circuit and/or program instructions, and when the chip is running on a session management network element, the chip is configured to implement a transmission method on a session management network element side as described above.

In yet another aspect, an embodiment of the present application provides a chip, where the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on a user plane network element, the chip is configured to implement a transmission method on a user plane network element side as described above.

In yet another aspect, an embodiment of the present application provides a chip, where the chip includes a programmable logic circuit and/or program instructions, and when the chip is running on an access network element, the chip is configured to implement a transmission method on an access network element side as described above.

In yet another aspect, an embodiment of the present application provides a computer program product for implementing a transmission method on the policy control element side as described above, when the computer program product is run on the policy control element.

In yet another aspect, embodiments of the present application provide a computer program product for implementing a transmission method on a session management network element side as described above, when the computer program product is run on the session management network element.

In yet another aspect, an embodiment of the present application provides a computer program product configured to implement a transmission method on a user plane network element side as described above when the computer program product is run on the user plane network element.

In yet another aspect, an embodiment of the present application provides a computer program product for implementing a transmission method on an access network element side as described above, when the computer program product is run on the access network element.

The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:

by providing identification information for identifying the application data unit, transmission control at the application data unit level is facilitated for the data. In addition, in the embodiment of the application, the association relation between at least one application data unit is provided, so that the whole transmission control of the application data unit with the association relation is facilitated in the data transmission process, the application data unit can be ensured to be timely and successfully decoded, the synchronous requirements of services such as audio and video playing are met, and the user experience is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

fig. 2 is a schematic diagram of a 5G network system architecture according to another embodiment of the present application;

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

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

fig. 5 is a schematic diagram of a user plane protocol stack according to another embodiment of the present application;

FIG. 6 is a schematic diagram of a transmission method provided in one embodiment of the present application;

fig. 7 is a schematic diagram of a transmission method according to another embodiment of the present application;

fig. 8 is a schematic diagram of a transmission method according to still another embodiment of the present application;

fig. 9 is a schematic diagram of a transmission method according to another embodiment of the present application;

fig. 10 is a block diagram of a transmission device provided in one embodiment of the present application;

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

fig. 12 is a block diagram of a transmission apparatus provided in yet another embodiment of the present application;

fig. 13 is a block diagram of a transmission apparatus provided in yet another embodiment of the present application;

fig. 14 is a block diagram of a transmission apparatus provided in yet another embodiment of the present application;

fig. 15 is a block diagram of a transmission apparatus provided in yet another embodiment of the present application;

fig. 16 is a block diagram of a transmission apparatus provided in yet another embodiment of the present application;

fig. 17 is a schematic structural diagram of a policy control network element according to an embodiment of the present application;

fig. 18 is a schematic structural diagram of a session management network element according to an embodiment of the present application;

fig. 19 is a schematic structural diagram of a user plane network element according to an embodiment of the present application;

fig. 20 is a schematic structural diagram of an access network element according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

The technical scheme provided by the embodiment of the application can be applied to various communication systems, for example: GSM (Global System of Mobile Communication, global system for mobile communications), CDMA (Code Division Multiple Access ) system, WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access) system, GPRS (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 telecommunications system), wiMAX (Worldwide Interoperability for Microwave Access ) communication system, 5GS (5 th-Generation System, fifth generation mobile telecommunications system) or New air interface (New Radio, NR) system, or subsequent other evolved systems, etc.

Referring to fig. 1, a schematic diagram of a 5G network system architecture according to an embodiment of the present application is shown. As shown in fig. 1, the system architecture 100 may include: terminal equipment, (radio) access network, core network and data network. The terminal device, (radio) access network and core network are main components forming the system architecture 100, and logically they can be divided into two parts, namely a user plane and a control plane, the control plane is responsible for management of the mobile network, and the user plane is responsible for transmission of service data. In fig. 1, the NG2 reference point is located between the control plane of the (radio) access network and the control plane of the core network, the NG3 reference point is located between the user plane of the (radio) access network and the user plane of the core network, and the NG6 reference point is located between the user plane of the core network and the data network.

Terminal equipment: the method is an entrance for interaction between the mobile user and the network, can provide basic computing capacity and storage capacity, displays a service window for the user, and accepts user operation input. The terminal device may make an access layer connection with the (radio) access network via the Uu interface, exchange access layer messages or transmit radio data. A terminal device may refer to a UE (User Equipment), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a wireless communication device, a User agent, or a User Equipment, and may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol ) phone, a WLL (Wireless Local Loop, wireless local loop) station, a PDA (Personal digital Assistant), a handheld device with wireless communication function, a computing device, or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, or the like, which is not limited in this embodiment. For convenience of description, the above-mentioned devices are collectively referred to as terminal devices.

(radio) access network: the network access function is provided for authorized users in a specific area, and user data can be transmitted by using transmission tunnels with different qualities according to the level of the users, the service requirements and the like. The (radio) access network is capable of managing its own resources, providing access services to the terminal devices as required, and forwarding control signals and user data between the terminal devices and the core network. One or more access network elements may be deployed in a (radio) access network, which is a device deployed in a (radio) access network to provide wireless communication functionality for terminal devices. The access network elements may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of access network element capable devices may vary, for example, in NR systems, called gndeb or gNB. For convenience of description, in the embodiments of the present application, the above-mentioned devices for providing wireless communication functions for terminal devices are collectively referred to as access network elements.

Core network: and the system is responsible for maintaining subscription data of the mobile network, managing network elements of the mobile network, and providing session management, mobility management, policy management, security authentication and other functions for the terminal equipment. Providing network access authentication for the terminal equipment when the terminal equipment is attached; when the terminal equipment has a service request, network resources are allocated to the terminal equipment; updating network resources for the terminal equipment when the terminal equipment moves; and when the terminal equipment is idle, providing a quick recovery mechanism for the terminal equipment: releasing network resources for the terminal equipment when the terminal equipment is detached; when the terminal device has service data, a data routing function is provided for the terminal device, such as forwarding uplink data to a data network, or receiving downlink data from the data network and forwarding to a (radio) access network, so as to send the data to the terminal device.

Data network: the service is provided for the user, and the client is generally located in the terminal device, and the server is located in the data network. The data network may be a private network (such as a local area network), an external network (such as the Internet) that is not managed by the operator, or a proprietary network (such as a network deployed for configuring IMS (IP Multimedia Core Network Subsystem, IP multimedia network subsystem) services) that is co-deployed by the operator, which is not limited in this embodiment of the present application.

As shown in fig. 2, the user plane of the core network includes UPF; the core network control plane includes: AMF, SMF, PCF, AUSF (Authentication Server Function ), UDM (Unified Data Management, unified data management), AF (Application Function ), NSSF (Network Slice Selection Function, network slice selection function), and the like. The functions of these functional entities (or "network elements") are shown below.

UPF: and the user is responsible for routing and forwarding the user plane data packet, qoS processing of the user plane, statistics and reporting of the user using information, interaction with an external data network and the like.

AMF: all terminal equipment connection and mobility management related tasks such as registration management, connection management, mobility management, etc. are handled.

SMF: responsible for session establishment, modification and release, tunnel maintenance between UPF and AN (Access Node), terminal equipment IP (Internet Protocol, network protocol) address allocation and management, UPF function selection and control, charging data collection and charging interface support, etc.

PCF: a unified policy framework is supported to manage network behavior and provide operator network control policies to other network elements and terminal devices.

AUSF: the method is used for receiving the request of the AMF for carrying out the identity verification on the terminal equipment, requesting a secret key from the UDM, and forwarding the issued secret key to the AMF for carrying out the authentication processing.

UDM: the method comprises the functions of generating and storing user subscription data, managing authentication data and the like, and supports interaction with an external third-party server.

AF: may be an application function (such as IMS, etc.) within the operator, or may be a service of a third party (such as web services, video, games, etc.).

NSSF: the method is mainly used for selecting network slices.

In the system architecture shown in fig. 2, a terminal device (UE) performs access layer connection with a (radio) access network (R) AN through a Uu interface, and interacts with AN access layer message or transmits radio data; the terminal equipment establishes non-access stratum connection with the AMF through an N1 interface, and interacts NAS information; the AMF is responsible for forwarding session management related messages between the terminal equipment and the SMF in addition to mobility management of the terminal equipment; PCF is in charge of making related strategies such as mobility management, session management, charging and the like for terminal equipment; the UPF performs Data transmission with an external Data Network (DN) through an N6 interface, and performs Data transmission with a (wireless) access Network through an N3 interface.

It should be noted that the names of interfaces between the network elements in fig. 1 and fig. 2 are only an example, and the names of interfaces may be other names when the interfaces are implemented in particular, which is not limited in this embodiment of the present application. The names of the network elements (e.g. SMF, PCF, UPF, etc.) included in fig. 1 and fig. 2 are also merely examples, and the functions of the network elements themselves are not limited, and in 5G and other networks in the future, the above-mentioned network elements may also be other names, which are not limited in this embodiment of the present application. Illustratively, in a 6G network, some or all of the individual network elements described above may follow the terminology in 5G, possibly with other names. Furthermore, it should be understood that the names of the transmitted messages (or signaling) between the various network elements described above are also merely an example, and do not constitute any limitation on the functionality of the messages themselves.

In one example, the 5G network provides data transmission services between the terminal device and the external data network through PDU (Protocol Data Unit ) sessions, and may provide differentiated QoS (Quality of Service) guarantees for different traffic data flows transmitted in the same PDU session according to traffic.

Referring to fig. 3, a schematic diagram of a QoS model provided in an embodiment of the present application is shown. The QoS model shown in fig. 3 performs QoS control based on QoS flow granularity. Optionally, after the terminal equipment accesses the 5G network through the Uu interface, establishing QoS flow under the control of SMF to perform data transmission; the SMF provides QoS flow configuration information for each QoS flow to the access network element, including information such as 5QI (5G QoS Identifier,5G QoS identification), ARP (Allocation and Retention Priority ), and code rate requirements. Wherein 5QI is an index value that can correspond to QoS characteristics such as delay, bit error rate requirements, etc., 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 allocates or maintains priority of resources for QoS flows. For each QoS flow, the access network element schedules radio resources according to the QoS flow configuration information received from the SMF to guarantee QoS requirements of the QoS flow.

Referring to fig. 4, a schematic diagram of a user plane protocol stack according to an embodiment of the present application is shown. Based on the user plane protocol stack shown in fig. 4, the UPF in the core network may parse to a PDU layer (PDU layer) of the packet, for example, for the IP packet, may parse to an IP data header (including information of a source IP address, a destination IP address, a source port number, a destination port number, etc.). Therefore, the UPF determines the QoS flow based on the analyzed information, and transmits the service data flow through the corresponding QoS flow so as to obtain the corresponding QoS guarantee.

In some examples, application layer data interacted between a terminal device and an application server or a peer terminal device is typically subjected to specific coding and compression, such as data of AR (Augmented Reality, augmented Reality technology), VR (Virtual Reality), cloud game (Cloud game), and the like. Optionally, the encoding and compression includes encoding and compression based on video codec technology standards such as h.264. Video codec standards such as h.264 format data through a network abstraction layer (Network Abstraction Layer, NAL) and provide header information for application layer data. During encoding, a partial sequence of video frames is compressed into I frames, a partial sequence of video frames is compressed into P frames, and a partial sequence of video frames is compressed into B frames. Wherein, the I frame is a key frame, belongs to intra-frame compression, and can be completed only by the frame data during decoding; and the P frame and the B frame have no complete picture data, only have data of picture difference with the adjacent frame, and the picture of the adjacent frame is required to overlap the difference defined by the frame to generate a final picture when decoding.

However, in connection with the user plane protocol stack shown in fig. 4, for video service data flows processed by compression coding, the network cannot analyze the data header of the application layer data, that is, cannot distinguish whether the compression coded data belongs to an I frame or a P frame or a B frame, but only considers the data as the same service data flow, and performs the same QoS guarantee. In this way, key frame key transmission cannot be performed accurately, so that the loss of key frame data may be caused, and the service experience is greatly affected.

In addition, the application layer data may have a certain association relationship, for example, one audio data and another video or image data need to be played simultaneously, or one video frame and the corresponding subtitle need to be played simultaneously, so as to meet the watching requirement of the user; for another example, a B frame may be correctly decoded by the terminal device only if both the previous and subsequent frames associated with the B frame need to reach the terminal device. In the related art, a data buffer area is set in an application layer, association between two or more data is performed from the application layer, and decoding or playing processing is performed simultaneously after all the associated data reach the data buffer area. However, for services with high requirements on real-time playing performance, such as AR, VR, cloud game, etc., the data received by the terminal device from the network side needs to be decoded and played immediately, so that long-time buffering cannot be performed in the data buffering area of the application layer, so as to wait for the arrival of other associated data. Therefore, when one data is successfully transmitted to the terminal device and the associated data does not arrive, the problems of asynchronous audio and video playing, decoding failure and the like may be caused, and the user experience is greatly affected.

Based on this, the embodiment of the application provides a transmission method, which can solve the technical problems. As shown in fig. 5, in order to implement the transmission method provided in the embodiment of the present application, a UPF (user plane network element) in the core network needs to be able to parse an application layer (Application layer) of a data packet, for example, it is required to read NAL formatted data encoded and compressed by a video codec technology such as h.264. The transmission method provided in the present application will be described in connection with several embodiments.

Referring to fig. 6, a flowchart of a transmission method according to an embodiment of the present application is shown. The method can be applied to the system architecture shown in fig. 1 and 2, and can be based on the QoS model shown in fig. 3 and the user plane protocol stack shown in fig. 5. The method may comprise at least part 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 the application data units having the association relationship, and the first identification information is used to identify the application data units.

The application function may be an application function (such as IMS, etc.) inside the operator, or may be a service of a third party (such as web service, video, game, etc.), and in the 5G network system architecture, the application function may be implemented as AF. The policy control network element is responsible for providing operator network control policies to other network elements and terminal devices, and in the 5G network system architecture, the policy control network element may be implemented as a PCF. In other or future network system architectures, the application function and policy control network element may use some or all of the names in the 5G network system architecture, and may also have other names, and it should be understood that these names are all within the scope of protection of the present application.

In the embodiment of the present application, the application function may send first association information to a 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 content of the first association information is not limited in the embodiment of the present application, and optionally, the first association information includes, but is not limited to: and the application data units with the association relationship (namely at least one application data unit with the association relationship indicated by the first association information) respectively correspond to the first identification information. Illustratively, the first association information is used to indicate that there is association information between 3 application data units (application data unit 1, application data unit 2, and application data unit 3), and then the first association information includes first identification information (first identification information corresponding to application data unit 1, first identification information corresponding to application data unit 2, and first identification information corresponding to application data unit 3) corresponding to the 3 application data units, respectively.

The application data unit may include at least one data packet, and in the embodiment of the present application, the specific implementation of the application data unit is not limited, and illustratively, in the case where the service data stream is implemented as an audio/video stream, the application data unit may be a frame in the audio/video stream, or may be an intra-frame coding slice. Alternatively, the application data unit may be referred to as ADU (Application Data Unit), or may be otherwise referred to, which is not limited by the embodiments of the present application.

The first identification information is used for identifying the application data unit, and specific content of the first identification information is not limited in the embodiment of the application. In one example, the first identifying information includes, but is not limited to, at least one of: first identification information, first type information, first transmission information, and the like. The first identification information is used to identify the application data unit, and may include a frame number, for example, in the case where the application data unit is implemented as a frame; in case the application data unit is implemented as a coded slice within a frame, the first identification information may comprise a coded slice identification. The first type information is used to indicate the type of application data unit, optionally including but not limited to any of the following: self-encoding application data units, forward predictive coding application data units, bi-predictive coding application data units, sequence parameter sets, picture parameter sets, etc. The first transmission information is used for indicating a transport layer address and/or a transport protocol corresponding to the application data unit, and optionally, the first transmission information includes, but is not limited to: IP quintuple, IP triplet, etc.

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

The matters for which the session management network element is responsible include, but are not limited to: establishment, modification and release of sessions; maintaining a tunnel between the UPF and the AN; terminal equipment IP address allocation and management; selecting and controlling a UPF function; charging data collection, charging interface support, etc. Illustratively, in the 5G network system architecture, the session management network element may be implemented as an SMF. In other or future network system architectures, the session management network element may follow the names in the 5G network system architecture, and may also have other names, and it should be understood that these names are all within the scope of protection of the present application.

In this 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 description of the first association information, please refer to the above embodiment, and the description is omitted here.

And then, the session management network element can respectively send information required by transmission control of the application data unit level to the user plane network element and the access network element based on the received first association information. In this embodiment of the present invention, 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, so that in a subsequent transmission process of the downlink data packet, the user plane network element and the access network element can use the numbers of the application data units to identify the application data units.

Based on this, in one example, as shown in fig. 7, step 620 further includes step 621, where the session management network element determines second association information based on the first association information, where the second association information includes numbers corresponding to the application data units having the association relationship, respectively. That is, the session management network element renumbers the application data units, and replaces the first identification information 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, so as to obtain the second association information. Illustratively, the session management network element renumbers an application data unit with IP five-tuple a and identified as 1 (i.e., the number of this application data unit is A1); the application data unit with IP five tuple B and identified as 1 is renumbered as B1 (i.e. 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 for which the user plane network element is responsible include, but are not limited to: routing and forwarding of user plane data packets; qoS treatment of user plane; user usage information statistics and reporting; interaction with external data networks, etc. Illustratively, in a 5G network system architecture, the user plane network element may be implemented as a UPF. In other or future network system architectures, the user plane network element may follow the names in the 5G network system architecture, and may also have other names, and it should be understood that these names are all within the scope of protection of the present application.

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

As can be seen from the above embodiment, the session management network element may renumber the application data unit, based on which, in one example, as shown in fig. 7, step 630 is implemented as step 632, and the session management network element sends the first identification information corresponding to the application data unit and the number corresponding to the application data unit to the user plane network element. That is, the first association information is used to indicate that at least one application data unit has an association relationship, and when the session management network element renumbers the application data unit, the session management network element sends the first identification information and the number corresponding to the at least one application data unit to the user plane network element.

In step 640, the session management network element sends the first association information to the access network element.

The session management network element may further forward the first association information to the access network element after receiving the first association information sent by the policy control 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 indicates, to the access network element, not only that there is an association relationship between at least one application data unit, but also indicates, to the access network element, first identification information corresponding to at least one application data unit respectively; however, in the above step 630, the session management network element sends the first identification information corresponding to the application data units to the user plane network element, that is, the session management network element indicates the first identification information corresponding to the at least one application data unit to the user plane network element, and does not need to indicate to the user plane network element that there is an association relationship between the at least one application data unit.

As can be seen from the above embodiments, the session management network element may renumber the application data units, based on which, in one example, as shown in fig. 7, the above step 640 is implemented as step 642, and the session management network element sends the second association information to the access network element. That is, in the case that the session management network element is renumbered with the application data units, the session management network element sends second association information to the access network element, where the second association information is used to indicate that there is association information between at least one application data unit, and the second association information includes numbers corresponding to the at least one application data unit respectively.

It should be noted that, in the embodiment of the present application, the execution sequence of step 630 and step 640 is not limited, and in one example, the session management network element may execute step 630 and step 640 simultaneously; in another example, the session management network element may perform step 630 first and then step 640; in yet another example, the session management network element may perform step 640 before performing step 630.

In summary, the technical solution provided in the embodiments of the present application facilitates implementing transmission control at the application data unit level for data by providing identification information for identifying application data units. In addition, in the embodiment of the application, the association relation between at least one application data unit is provided, so that the whole transmission control of the application data unit with the association relation is facilitated in the data transmission process, the application data unit can be ensured to be timely and successfully decoded, the synchronous requirements of services such as audio and video playing are met, and the user experience is improved.

Based on the embodiment of fig. 6 and the embodiment of fig. 7, the control parameters of the whole application data unit with the association relationship can also be provided to the access network element. This mode will be described below.

Referring to fig. 8, a flowchart of a transmission method according to an embodiment of the present application is shown. The method can be applied to the system architecture shown in fig. 1 and 2, and can be based on the QoS model shown in fig. 3 and the user plane protocol stack shown in fig. 5. The method may comprise at least part of the following steps.

In the fig. 8 embodiment, step 610 is implemented as step 612, step 620 is implemented as step 622, step 630 is implemented as step 634, and step 640 is implemented as step 644.

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

For a description of the content of the first association information, please refer to step 610, and the description thereof is omitted here.

To indicate to the policy control network element the control requirements of the application function for the application data unit, in one example, as shown in fig. 8, the step 612 further includes: the application function sends first requirement information to the strategy control network element, wherein the first requirement information is used for indicating the association control requirement of the application data unit with the association relation. That is, the first requirement information corresponds to first association information indicating an association between at least one application data unit, and the first requirement information indicates a control requirement of the application function for the at least one application data unit as a whole.

The content of the first requirement information is not limited in the embodiment of the present application, and in one example, the first requirement 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 for indicating that the application data units with the association relationship arrive at the terminal device at the same time, or is used for indicating that the application data units with the association relationship arrive at the terminal device continuously and sequentially (or can be said to be 'adjacent arrival terminal device'). And the first interval information is used for indicating the maximum time interval for the application data units with the association relationship to reach the terminal equipment. The first parameter information is used for indicating QoS parameters of the application data units with the association relationship, that is, qoS parameters of at least one application data unit with the association relationship as a whole, such as transmission delay, error rate, code rate requirement and the like.

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

For description of the policy control network element sending the first association information to the session management network element, please refer to step 620, which is not repeated herein.

The policy control network element may send, in addition to the first association information to the session management network element, first control information to the session management network element, where the first control information is used to indicate association control parameters of the application data units having the association relationship. That is, the first control information corresponds to first association information indicating an association between at least one application data unit, and the first control information indicates an association control parameter of the at least one application data unit as a whole.

The content of the first control information is not limited in the embodiment of the present application, and in one 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. And second arrival information for indicating that the application data units having the association relationship arrive at the terminal device at the same time, or for indicating that the application data units having the association relationship arrive at the terminal device continuously and sequentially (or may be said to be "adjacent arrival terminal devices"). And the second interval information is used for indicating the maximum time interval for the application data units with the association relationship to reach the terminal equipment. And the second parameter information is used for indicating the QoS parameters of the application data units with the association relation, namely, the QoS parameters of at least one application data unit with the association relation as a whole, such as transmission delay, error rate, code rate requirement and the like.

It should be noted that, the first control information refers to an association control parameter for an application data unit having an association determined by the policy control network element, and the first requirement information refers to an association control requirement for an application data unit having an association required by an application function. Under the condition that the application function sends the first requirement information to the policy control network element, the policy control network element can determine the first control information by combining the first requirement information, and can ignore the first requirement information in the determination process of the first control information, which is not limited in the embodiment of the application. Taking the policy control network element as an example to determine the first control information by combining the first requirement information, assuming that the first requirement information comprises first arrival information and first parameter information, and the first control information comprises second arrival information and second parameter information, the policy 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; alternatively, the policy control network element may redetermine the second parameter information in combination with the first parameter information, for example, the first parameter information includes an error rate required by the application function, and the policy control network element may set the error rate in the second parameter information to be smaller than the error rate in the first parameter information.

In 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 steps 630 and 632, which are not repeated here.

The session management network element sends 644 the first association information and the first control information to the access network element.

For descriptions of the session management network element sending the first association information to the access network element, please refer to the descriptions of the above step 640 and step 642, which are not repeated here.

The session management network element may send, in addition to the first association information to the access network element, first control information to the access network element to indicate to the access network element a control parameter of the at least one application data unit indicated by the first association information as a whole. For a description of the content of the first control information, please refer to step 622, and the description thereof is omitted herein.

In summary, by providing the overall association control parameter for at least one application data unit with an association relationship, the technical solution provided in the embodiment of the present application realizes the overall transmission control process for the access network element on the application data unit with an association relationship, and provides effective and targeted reference information.

Based on the transmission method of the control plane signaling described in the embodiments of fig. 6 to fig. 8, the user plane network element and the access network element may perform transmission of the downlink data packet. Next, description will be made on a transmission procedure of the downlink packet.

Referring to fig. 9, a flowchart of a transmission method according to an embodiment of the present application is shown. The method can be applied to the system architecture shown in fig. 1 and 2, and can be based on the QoS model shown in fig. 3 and the user plane protocol stack shown in fig. 5. The method may comprise at least part of the following steps.

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

And the user plane network element sends the downlink data packet to the access network element under the condition that the requirement of transmitting the downlink data packet to the terminal equipment exists. In the embodiment of the application layer data of the downlink data packet can be read by the user plane network element, and the application layer data is matched with the first identification information corresponding to the application data unit, so that the information capable of identifying the application data unit is added in the packet header of the downlink data packet, and the transmission control of the application data unit level can be realized based on the packet header of the downlink data packet after the downlink data packet is received by the access network element.

Based on the above embodiment of fig. 6, the user plane network element receives the first identification information corresponding to the application data unit. Therefore, when the downlink data packet is matched with the first identification information, the user plane network element adds the first identification information in the packet header of the downlink data packet.

Based on the above embodiment of fig. 7, the user plane network element receives the first identification information and the number corresponding to the application data unit. Therefore, when the downlink data packet is matched with the first identification information, the user plane network element adds the number of the application data unit in the packet header of the downlink data packet.

Step 660, the access network element 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 access network element determines a 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 realize transmission control of the data at the level of the application data unit and realize overall transmission control of the application data unit with the association relationship, the access network element may determine the first transmission mode based on the first association information or the second association information. 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 equipment simultaneously, or the application data units with the association relationship arrive at the terminal equipment continuously and sequentially; the application data unit with the association relationship reaches the terminal equipment in a first time interval; the QoS parameter of the application data unit with the association relation is a first QoS parameter.

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

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

In summary, according to the technical solution provided in the embodiments of the present application, the overall transmission control is performed on the application data units having the association relationship, for example, it is ensured that the application data units having the association relationship arrive at the terminal device simultaneously, continuously and sequentially, or within a certain time interval, or the application data units having the association relationship are regarded as a whole to perform the guarantee of transmission delay, bit error rate, and the like, so that the application data units can be timely and successfully decoded.

It should be noted that, in the above embodiment, the transmission method provided in the embodiment of the present application is described in terms of interaction among an application function, a policy control network element, a session management network element, a user plane network element, and an access network element. In the above embodiment, each step executed by the policy control network element may be implemented separately as a transmission method on the policy control network element side; the steps executed by the session management network element can be independently realized as a transmission method of the session management network element side; the steps executed by the user plane network element can be independently realized as a transmission method of the user plane side; the steps executed by the access network element can be independently implemented as a transmission method at the access network element side.

The following are device embodiments of the present application, which may be used to perform 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.

Referring to fig. 10, a block diagram of a transmission device according to an embodiment of the present application is shown. The device has the function of realizing the method example of the strategy control network element side, and the function can be realized by hardware or can be realized by executing corresponding software by hardware. The device may be the policy control network element described above, or may be provided in the policy control network element. As shown in fig. 10, the apparatus 1000 may include: a first receiving module 1010 and a first transmitting 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 having an association relationship, and the first identification information is used to identify the application data units.

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

In one example, the first identification information includes at least one of: first identification information for identifying the application data unit; first type information for indicating a type of the application data unit; and the first transmission information is used for indicating a transmission layer address and/or a transmission protocol corresponding to the application data unit.

In one example, the first receiving module 1010 is further configured to: and receiving first requirement information sent by the application function, wherein the first requirement information is used for indicating the association control requirement of the application data unit with the association relation.

In one example, the first demand information includes at least one of: the first arrival information is used for indicating that the application data units with the association relationship arrive at the terminal equipment simultaneously or continuously and sequentially; the first interval information is used for indicating the maximum time interval of the application data unit with the association relationship reaching the terminal equipment; and the first parameter information is used for indicating the QoS parameters of the application data units with the association relation.

In one example, the first transmitting module 1020 is further configured to: and sending first control information to the session management network element, wherein the first control information is used for indicating the association control parameters of the application data units with association relation.

In one example, the first control information includes at least one of: the second arrival information is used for indicating that the application data units with the association relationship arrive at the terminal equipment simultaneously or continuously and sequentially; the second interval information is used for indicating the maximum time interval of the application data unit with the association relationship reaching the terminal equipment; and the second parameter information is used for indicating the QoS parameters of the application data units with the association relation.

Referring to fig. 11, a block diagram of a transmission device according to an embodiment of the present application is shown. The device has the function of realizing the method example of the session management network element side, and the function can be realized by hardware or can be realized by executing corresponding software by hardware. The device may be the session management network element described above, or may be provided 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 having an association relationship, where the first identification information is used to identify the application data units.

In one example, as shown in fig. 12, the apparatus 1100 further includes: the first determining module 1120 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 association relationships respectively.

In one 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 the user plane network element: the first identification information corresponding to the application data unit and the number corresponding to the application data unit.

In one 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 and the second association information.

In one 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 an association control parameter of the application data unit with an association relationship; a second sending module 1130, configured to send the first control information to an access network element.

In one example, the first control information includes at least one of: the second arrival information is used for indicating that the application data units with the association relationship arrive at the terminal equipment simultaneously or indicating that the at least one application data unit arrives at the terminal equipment continuously and sequentially; the second interval information is used for indicating the maximum time interval of the application data unit with the association relationship reaching the terminal equipment; and the second parameter information is used for indicating the QoS parameters of the application data units with the association relation.

Referring to fig. 13, a block diagram of a transmission device according to an embodiment of the present application is shown. The device has the function of realizing the method example of the user plane network element side, and the function can be realized by hardware or can be realized by executing corresponding software by hardware. The device may be the user plane network element described above, or may be provided in the user plane network element. As shown in fig. 13, the apparatus 1300 may include: a third receiving module 1310.

A third receiving module 1310, configured to receive first identification information corresponding to an application data unit sent by a session management network element, and/or a number corresponding to the application data unit; the first identification information is used for identifying 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; and when the downlink data packet is matched with the first identification information, the packet header of the downlink data packet comprises the first identification information, or the packet header of the downlink data packet comprises the number.

Referring to fig. 15, a block diagram of a transmission device according to an embodiment of the present application is shown. The device has the function of realizing the method example at the network element side of the access network, and the function can be realized by hardware or can be realized by executing corresponding software by hardware. The device may be an access network element as described above, or may be provided in an access network element. As shown in fig. 15, the apparatus 1500 may include: a fourth receiving module 1510.

A fourth receiving module 1510, configured to receive the first association information or the second association information sent by the session management network element; the first association information comprises first identification information corresponding to application data units with association relation respectively, and the first identification information is used for identifying the application data units; the second association information comprises numbers corresponding to the application data units with association relation respectively.

In one example, the fourth receiving module 1510 is further configured to: and receiving first control information sent by the session management network element, wherein the first control information is used for indicating the association control parameters of the application data units with association relation.

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 the user plane network element; a fourth sending module 1530, configured to send the downlink data packet to a 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 the first control information; and when the packet head of the downlink data packet comprises the number, the first transmission mode is determined based on the second association information and/or the first control information.

In one example, the first transmission manner meets at least one of the following transmission requirements: the application data units with the association relationship arrive at the terminal equipment simultaneously, or the application data units with the association relationship arrive at the terminal equipment continuously and sequentially; the application data unit with the association relationship reaches the terminal equipment in a first time interval; the QoS parameter of the application data unit with the association relation is a first QoS parameter.

It should be noted that, when the apparatus provided in the foregoing embodiment performs the functions thereof, only the division of the respective functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to perform all or part of the functions described above.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Referring to fig. 17, a schematic structural diagram of a policy control network element 170 according to an embodiment of the present application is shown, for example, the policy control network element may be used to execute the above-mentioned transmission method on the policy control network element side. In particular, the policy control network element 170 may comprise: 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.

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

In one example, policy control network element 170 further comprises: memory and 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 to implement the steps performed by the policy control network element in the above method embodiment.

Further, the memory may be implemented by any type of volatile or nonvolatile memory device, including but not limited to: RAM (Random-Access Memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other solid state Memory technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc, high density digital video disc) or other optical storage, magnetic cassettes, magnetic tape, magnetic 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 having an association relationship, and the first identification information is used to identify the application data units;

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

In one 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 unit having an association relationship.

In one 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.

Referring to fig. 18, a schematic structural diagram of a session management network element 180 according to an embodiment of the present application is shown, for example, the session management network element may be used to perform the above-mentioned transmission method on the session management network element side. In particular, the session management network element 180 may include: a processor 181 and a transceiver 182 coupled 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.

The transceiver 182 includes a receiver and a transmitter. Alternatively, the transceiver 182 is a communication chip.

In one example, session management network element 180 further includes: memory and bus. The memory is connected to the processor through a bus. The memory may be used for storing a computer program, and the processor is used for executing the computer program to implement the steps performed by the session management network element in the above-described method embodiment.

Further, the memory may be implemented by any type of volatile or nonvolatile memory device, including but not limited to: RAM and ROM, EPROM, EEPROM, flash memory or other solid state memory technology, CD-ROM, DVD or other optical storage, magnetic cassettes, 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 having an association relationship, where the first identification information is used to identify the application data units.

In one example, the processor 181 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 the association relationship, respectively.

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

In one 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 one example, the transceiver 182 is further configured to: receiving first control information sent by the strategy control network element, wherein the first control information is used for indicating association control parameters of the application data units with association relation; and sending the first control information to an access network element.

Referring to fig. 19, a schematic structural diagram of a user plane network element 190 according to an embodiment of the present application is shown, for example, the user plane network element may be used to execute the above-mentioned transmission method on the user plane network element side. In particular, 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.

The transceiver 192 includes a receiver and a transmitter. Alternatively, transceiver 192 is a communication chip.

In one example, user plane network element 190 further comprises: memory and bus. The memory is connected to the processor through a bus. The memory may be used for storing a computer program, and the processor is configured to execute the computer program to implement the steps performed by the user plane network element in the above method embodiment.

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

In one example, the transceiver 192 is further configured to send a downlink data packet to an access network element; and when the downlink data packet is matched with the first identification information, the packet header of the downlink data packet comprises the first identification information, or the packet header of the downlink data packet comprises the number.

Referring to fig. 20, a schematic structural diagram of a terminal device 200 according to an embodiment of the present application is shown, and for example, the terminal device may be used to perform the above-mentioned transmission method on the terminal device side. Specifically, the terminal device 200 may include: a processor 201, and a transceiver 202 coupled 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.

The transceiver 202 includes a receiver and a transmitter. Alternatively, transceiver 202 is a communication chip.

In one example, the terminal device 200 further includes: memory and bus. The memory is connected to the processor through a bus. The memory may be used for storing a computer program, and the processor is used for executing the computer program to implement the steps executed by the terminal device in the above-mentioned method embodiment.

The transceiver 202 is configured to receive the first association information or the second association information sent by the session management network element; the first association information comprises first identification information corresponding to application data units with association relation respectively, and the first identification information is used for identifying the application data units; the second association information comprises numbers corresponding to the application data units with association relation respectively.

In one 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 one 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, sending the downlink data packet to terminal equipment; 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 the first control information; and when the packet head of the downlink data packet comprises the number, the first transmission mode is determined based on the second association information and/or the first control information.

The embodiment of the application also provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is used for being executed by a processor of the policy control network element to realize the transmission method of the policy control network element side.

The embodiment of the application also provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is used for being executed by a processor of a session management network element to realize the transmission method at the session management network element side.

The embodiment of the application also provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is used for being executed by a processor of a user plane network element to realize the transmission method at the user plane network element side.

The embodiment of the application also provides a computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is used for being executed by a processor of an access network element to realize the transmission method at the access network element side.

The embodiment of the application also provides a chip, which comprises a programmable logic circuit and/or program instructions and is used for realizing the transmission method at the strategy control network element side when the chip runs on the strategy control network element.

The embodiment of the application also provides a chip, which comprises a programmable logic circuit and/or program instructions and is used for realizing the transmission method at the session management network element side when the chip runs on the session management network element.

The embodiment of the application also provides a chip, which comprises a programmable logic circuit and/or program instructions and is used for realizing the transmission method at the user plane network element side when the chip runs on the user plane network element.

The embodiment of the application also provides a chip, which comprises a programmable logic circuit and/or program instructions and is used for realizing the transmission method at the network element side of the access network when the chip runs on the network element of the access network.

The embodiment of the application also provides a computer program product which is used for realizing the transmission method of the strategy control network element side when the computer program product runs on the strategy control network element.

The embodiment of the application also provides a computer program product which is used for realizing the transmission method at the session management network element side when the computer program product runs on the session management network element.

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

The embodiment of the application also provides a computer program product which is used for realizing the transmission method at 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 will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these 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 foregoing description of the exemplary embodiments of the present application is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and scope of the invention.

Claims

A transmission method applied to a policy control network element, the method comprising:

Receiving first association information sent by an application function, wherein the first association information comprises first identification information corresponding to application data units with association relation respectively, and the first identification information is used for identifying the application data units;

and sending the first association information to a session management network element.
The method of claim 1, wherein the first identification information comprises at least one of:

first identification information for identifying the application data unit;

first type information for indicating a type of the application data unit;

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

and receiving first requirement information sent by the application function, wherein the first requirement information is used for indicating the association control requirement of the application data unit with the association relation.
A method according to claim 3, wherein the first demand information comprises at least one of:

the first arrival information is used for indicating that the application data units with the association relationship arrive at the terminal equipment simultaneously or continuously and sequentially;

The first interval information is used for indicating the maximum time interval of the application data unit with the association relationship reaching the terminal equipment;

and the first parameter information is used for indicating the QoS parameters of the application data units with the association relation.
The method according to any one of claims 1 to 4, wherein after receiving the first association information sent by the application function, further comprising:

and sending first control information to the session management network element, wherein the first control information is used for indicating the association control parameters of the application data units with association relation.
The method of claim 5, wherein the first control information comprises at least one of:

the second arrival information is used for indicating that the application data units with the association relationship arrive at the terminal equipment simultaneously or continuously and sequentially;

the second interval information is used for indicating the maximum time interval of the application data unit with the association relationship reaching the terminal equipment;

and the second parameter information is used for indicating the QoS parameters of the application data units with the association relation.
A transmission method applied to a session management network element, the method comprising:

and receiving first association information sent by a strategy control network element, wherein the first association information comprises first identification information respectively corresponding to application data units with association relation, and the first identification information is used for identifying the application data units.
The method of claim 7, wherein the first identification information comprises at least one of:

first identification information for identifying the application data unit;

first type information for indicating a type of the application data unit;

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

and determining second association information based on the first association information, wherein the second association information comprises numbers corresponding to the application data units with association relations respectively.
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 comprises:

Transmitting at least one of the following information to a user plane network element: the first identification information corresponding to the application data unit and the 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 comprises:

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

receiving first control information sent by the strategy control network element, wherein the first control information is used for indicating association control parameters of the application data units with association relation;

and sending the first control information to an access network element.
The method of claim 12, wherein the first control information comprises at least one of:

the second arrival information is used for indicating that the application data units with the association relationship arrive at the terminal equipment simultaneously or indicating that the at least one application data unit arrives at the terminal equipment continuously and sequentially;

the second interval information is used for indicating the maximum time interval of the application data unit with the association relationship reaching the terminal equipment;

And the second parameter information is used for indicating the QoS parameters of the application data units with the association relation.
A transmission method, applied to a user plane network element, the method comprising:

receiving first identification information corresponding to an application data unit sent by a session management network element and/or a number corresponding to the application data unit; the first identification information is used for identifying the application data unit.
The method of claim 14, wherein the first identifying information comprises at least one of:

first identification information for identifying the application data unit;

first type information for indicating a type of the application data unit;

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

transmitting a downlink data packet to an access network element;

and when the downlink data packet is matched with the first identification information, the packet header of the downlink data packet comprises the first identification information, or the packet header of the downlink data packet comprises the number.
A transmission method, applied to an access network element, the method comprising:

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

the first association information comprises first identification information corresponding to application data units with association relation respectively, and the first identification information is used for identifying the application data units; the second association information comprises numbers corresponding to the application data units with association relation respectively.
The method of claim 17, wherein the first identification information comprises at least one of:

first identification information for identifying the application data unit;

first type information for indicating a type of the application data unit;

and the first transmission information is used for indicating a transmission layer address and/or a transmission protocol corresponding to the application data unit.
The method according to claim 17 or 18, characterized in that the method further comprises:

and receiving first control information sent by the session management network element, wherein the first control information is used for indicating the association control parameters of the application data units with association relation.
The method of claim 19, wherein the first control information comprises at least one of:

the second arrival information is used for indicating that the application data units with the association relationship arrive at the terminal equipment simultaneously or indicating that the at least one application data unit arrives at the terminal equipment continuously and sequentially;

the second interval information is used for indicating the maximum time interval of the application data unit with the association relationship reaching the terminal equipment;

and the second parameter information is used for indicating the QoS parameters of the application data units with the association relation.
The method according to any one of claims 17 to 20, further comprising:

receiving a downlink data packet sent by a user plane network element;

based on a first transmission mode, sending the downlink data packet to terminal equipment;

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 the first control information; and when the packet head of the downlink data packet comprises the number, the first transmission mode is determined based on the second association information and/or the first control information.
The method of claim 21, wherein the first transmission scheme satisfies at least one of the following transmission requirements:

the application data units with the association relationship arrive at the terminal equipment simultaneously, or the application data units with the association relationship arrive at the terminal equipment continuously and sequentially;

the application data unit with the association relationship reaches the terminal equipment in a first time interval;

the QoS parameter of the application data unit with the association relation is a first QoS parameter.
A transmission apparatus, disposed in a policy control network element, the apparatus comprising:

the first receiving module is used for receiving first association information sent by an application function, wherein the first association information comprises first identification information respectively corresponding to application data units with association relation, and the first identification information is used for identifying the application data units;

and the first sending module is used for sending the first association information to the session management network element.
The apparatus of claim 23, wherein the first identifying information comprises at least one of:

first identification information for identifying the application data unit;

First type information for indicating a type of the application data unit;

and the first transmission information is used for indicating a transmission layer address and/or a transmission protocol corresponding to the application data unit.
The apparatus of claim 23 or 24, wherein the first receiving module is further configured to:

and receiving first requirement information sent by the application function, wherein the first requirement information is used for indicating the association control requirement of the application data unit with the association relation.
The apparatus of claim 25, wherein the first demand information comprises at least one of:

the first arrival information is used for indicating that the application data units with the association relationship arrive at the terminal equipment simultaneously or continuously and sequentially;

the first interval information is used for indicating the maximum time interval of the application data unit with the association relationship reaching the terminal equipment;

and the first parameter information is used for indicating the QoS parameters of the application data units with the association relation.
The apparatus of any one of claims 23 to 26, wherein the first transmission module is further configured to:

And sending first control information to the session management network element, wherein the first control information is used for indicating the association control parameters of the application data units with association relation.
The apparatus of claim 27, wherein the first control information comprises at least one of:

the second arrival information is used for indicating that the application data units with the association relationship arrive at the terminal equipment simultaneously or continuously and sequentially;

the second interval information is used for indicating the maximum time interval of the application data unit with the association relationship reaching the terminal equipment;

and the second parameter information is used for indicating the QoS parameters of the application data units with the association relation.
A transmission apparatus, disposed in a session management network element, the apparatus comprising:

the second receiving module is used for receiving first association information sent by the strategy control network element, the first association information comprises first identification information corresponding to application data units with association relations, and the first identification information is used for identifying the application data units.
The apparatus of claim 29, wherein the first identifying information comprises at least one of:

first identification information for identifying the application data unit;

first type information for indicating a type of the application data unit;

and the first transmission information is used for indicating a transmission layer address and/or a transmission protocol corresponding to the application data unit.
The apparatus according to claim 29 or 30, characterized in that the apparatus 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 with association relationships respectively.
The apparatus according to any one of claims 29 to 31, further comprising:

the second sending module is used for sending at least one of the following information to the user plane network element: the first identification information corresponding to the application data unit and the number corresponding to the application data unit.
The apparatus according to any one of claims 29 to 32, further comprising:

the second sending module is used for sending any one of the following information to the access network element: the first association information and the second association information.
The device 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 an association control parameter of the application data unit with an association relationship;

and the second sending module is used for sending the first control information to the access network element.
The apparatus of claim 34, wherein the first control information comprises at least one of:

the second arrival information is used for indicating that the application data units with the association relationship arrive at the terminal equipment simultaneously or indicating that the at least one application data unit arrives at the terminal equipment continuously and sequentially;

the second interval information is used for indicating the maximum time interval of the application data unit with the association relationship reaching the terminal equipment;

and the second parameter information is used for indicating the QoS parameters of the application data units with the association relation.
A transmission apparatus, disposed in a user plane network element, the apparatus comprising:

the third receiving module is used for receiving 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 for identifying the application data unit.
The apparatus of claim 36, wherein the first identifying information comprises at least one of:

first identification information for identifying the application data unit;

first type information for indicating a type of the application data unit;

and the first transmission information is used for indicating a transmission layer address and/or a transmission protocol corresponding to the application data unit.
The apparatus according to claim 36 or 37, characterized in that the apparatus further comprises:

a third sending module, configured to send a downlink data packet to an access network element;

and when the downlink data packet is matched with the first identification information, the packet header of the downlink data packet comprises the first identification information, or the packet header of the downlink data packet comprises the number.
A transmission apparatus, disposed in an access network element, the apparatus comprising:

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

the first association information comprises first identification information corresponding to application data units with association relation respectively, and the first identification information is used for identifying the application data units; the second association information comprises numbers corresponding to the application data units with association relation respectively.
The apparatus of claim 39, wherein the first identification information comprises at least one of:

first identification information for identifying the application data unit;

first type information for indicating a type of the application data unit;

and the first transmission information is used for indicating a transmission layer address and/or a transmission protocol corresponding to the application data unit.
The apparatus of claim 39 or 40, wherein the fourth receiving module is further configured to:

and receiving first control information sent by the session management network element, wherein the first control information is used for indicating the association control parameters of the application data units with association relation.
The apparatus of claim 41, wherein the first control information comprises at least one of:

the second arrival information is used for indicating that the application data units with the association relationship arrive at the terminal equipment simultaneously or indicating that the at least one application data unit arrives at the terminal equipment continuously and sequentially;

the second interval information is used for indicating the maximum time interval of the application data unit with the association relationship reaching the terminal equipment;

And the second parameter information is used for indicating the QoS parameters of the application data units with the association relation.
The apparatus of any one of claims 39 to 42, further comprising:

a fifth receiving module, configured to receive a downlink data packet sent by a user plane network element;

a fourth sending module, configured to send the downlink data packet to a 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 the first control information; and when the packet head of the downlink data packet comprises the number, the first transmission mode is determined based on the second association information and/or the first control information.
The apparatus of claim 43, wherein the first transmission scheme satisfies at least one of the following transmission requirements:

the application data units with the association relationship arrive at the terminal equipment simultaneously, or the application data units with the association relationship arrive at the terminal equipment continuously and sequentially;

the application data unit with the association relationship reaches the terminal equipment in a first time interval;

The QoS parameter of the application data unit with the association relation is a first QoS parameter.
A policy control network element, characterized in that the policy control network element comprises: a processor, and a transceiver coupled 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 association relationships, and the first identification information is used to identify the application data units;

the transceiver is further configured to send the first association information to a session management network element.
A session management network element, the session management network element comprising: a processor, and a transceiver coupled 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 having an association relationship, where the first identification information is used to identify the application data units.
A user plane network element, the user plane network element comprising: a processor, and a transceiver coupled to the processor; wherein:

The transceiver is configured to receive first identification information corresponding to an application data unit sent by a session management network element, and/or a number corresponding to the application data unit; the first identification information is used for identifying the application data unit.
An access network element, the access network element comprising: a processor, and a transceiver coupled to the processor; wherein:

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

the first association information comprises first identification information corresponding to application data units with association relation respectively, and the first identification information is used for identifying the application data units; the second association information comprises numbers corresponding to the application data units with association relation respectively.
A computer readable storage medium, characterized in that the storage medium has stored therein a computer program for execution by a processor of a policy control network element for implementing the transmission method according to any of claims 1 to 6.
A computer readable storage medium, characterized in that the storage medium has stored therein a computer program for execution by a processor of a session management network element for implementing the transmission method according to any of claims 7 to 13.
A computer readable storage medium, characterized in that the storage medium has stored therein a computer program for execution by a processor of a user plane network element for implementing the transmission method according to any of claims 14 to 16.
A computer readable storage medium, characterized in that the storage medium has stored therein a computer program for execution by a processor of an access network element for implementing the transmission method according to any of claims 17 to 22.