CN113179518B - Data transmission method, data transmission device, data transmission equipment and terminal - Google Patents

Data transmission method, data transmission device, data transmission equipment and terminal Download PDF

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Publication number
CN113179518B
CN113179518B CN202110733779.8A CN202110733779A CN113179518B CN 113179518 B CN113179518 B CN 113179518B CN 202110733779 A CN202110733779 A CN 202110733779A CN 113179518 B CN113179518 B CN 113179518B
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terminal
network
service
data transmission
user plane
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CN113179518A (en
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李理
俞燕
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China Mobile Communications Group Co Ltd
China Mobile Shanghai ICT Co Ltd
CM Intelligent Mobility Network Co Ltd
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China Mobile Communications Group Co Ltd
China Mobile Shanghai ICT Co Ltd
CM Intelligent Mobility Network Co Ltd
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Priority to PCT/CN2022/102513 priority patent/WO2023274327A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18Negotiating wireless communication parameters
    • H04W28/20Negotiating bandwidth
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention provides a data transmission method, a data transmission device, data transmission equipment and a terminal, and relates to the technical field of communication. The data transmission method comprises the following steps: receiving a network access request of a first terminal; configuring a network application service ID and corresponding business flow association information for the first terminal; and sending a URSP message to the first terminal, wherein the URSP message is used for indicating the network application service ID and the corresponding traffic flow association information. The scheme of the invention effectively solves the problem that various service flows are transmitted on the same flow control layer in the prior art and cannot meet the requirements of service flows sensitive to time delay, safety and bandwidth. The invention improves the efficiency and reliability of service stream transmission and reduces time delay.

Description

Data transmission method, data transmission device, data transmission equipment and terminal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a data transmission apparatus, a data transmission device, and a terminal.
Background
With the development of 5G technology, the technology relying on 5G network has higher and higher requirements on high reliability and low latency of the network. The data transmission mode of the existing network is mainly 4G/5G + data private line or 4G/5G + Internet. Through the transmission mode of the data special line, the opening difficulty of the special line is high, and the network redundancy is insufficient; in the transmission mode of the internet, a network link is too long, the stability is poor, the delay is higher, and the IP resources of the public network are occupied. In both existing transmission modes, various service flows are transmitted on the same flow control layer, and the requirements of service flows sensitive to time delay, safety and bandwidth cannot be met.
Disclosure of Invention
The invention aims to provide a data transmission method, a data transmission device, data transmission equipment and a terminal, wherein different service flows are subjected to different network configurations by configuring a network application service ID and corresponding service flow association information for the terminal and selecting a strategy route through a user terminal route, so that the problem that in the prior art, various service flows are transmitted on the same flow control layer, and the requirements of service flows sensitive to time delay, safety and bandwidth cannot be met is effectively solved.
To achieve the above object, an embodiment of the present invention provides a data transmission method, applied to a core network element, including:
receiving a network access request of a first terminal;
configuring a network application service ID and corresponding business flow association information for the first terminal;
and sending a user terminal routing strategy message to the first terminal, wherein the user terminal routing strategy message is used for indicating the network application service ID and the corresponding business flow association information.
Further, the traffic flow association information includes:
at least one of a bandwidth, a latency indicator, and a security level of the traffic flow.
Further, the sending the user terminal routing policy message to the first terminal includes:
and sending a real-time user terminal routing strategy message to the first terminal through the strategy control function module.
Further, the method further comprises:
receiving a service request sent by a first terminal, wherein the service request carries the network application service ID;
determining service flow association information corresponding to the network application service ID, and selecting a target user plane function for the service flow association information based on a data network name, wherein the target user plane function comprises a user plane function deployed at the edge of a network;
and forwarding the service flow to a target terminal by utilizing the special data network name data outlet of the target user plane function.
Further, when the first terminal is a vehicle receiving remote driving control, the traffic flow includes: a stream of video data and a stream of vehicle status information;
when the first terminal is a remote cockpit, the service flow includes: a control information stream and a video data stream.
In order to achieve the above object, an embodiment of the present invention further provides a data transmission method, applied to a first terminal, including:
sending a network access request to a network;
receiving a user terminal routing strategy message sent by a network, wherein the user terminal routing strategy message is used for indicating a network application service ID and corresponding business flow association information;
and when a service request is initiated, sending the service request carrying the network application service ID to a network, and establishing a protocol data unit session of the service.
Further, the method further comprises:
receiving signing data of session management sent by a unified data management module;
and receiving a control strategy of session management sent by the strategy control function module.
To achieve the above object, an embodiment of the present invention further provides a data transmission apparatus, including:
a first receiving module, configured to receive a network access request of a first terminal;
a configuration module, configured to configure a network application service ID and corresponding traffic flow association information for the first terminal;
and the first sending module is used for sending a user terminal routing strategy message to the first terminal, wherein the user terminal routing strategy message is used for indicating the network application service ID and the corresponding business flow association information.
Further, the apparatus further comprises:
a second receiving module, configured to receive a service request sent by a first terminal, where the service request carries the network application service ID;
a determining module, configured to determine service flow association information corresponding to the network application service ID, and select a target user plane function for the service flow association information based on a data network name, where the target user plane function includes a user plane function deployed at a network edge;
and the forwarding module is used for forwarding the service flow to a target terminal by utilizing the special data network name data outlet of the target user plane function.
To achieve the above object, an embodiment of the present invention further provides a data transmission apparatus, including:
the second sending module is used for sending a network access request to the network;
a third receiving module, configured to receive a user terminal routing policy message sent by a network, where the user terminal routing policy message is used to indicate a network application service ID and traffic flow association information corresponding to the network application service ID;
and the establishing module is used for sending a service request carrying the network application service ID to a network when the service request is initiated, and establishing a protocol data unit session of the service.
To achieve the above object, an embodiment of the present invention provides a data transmission device, which is applied to a core network element, and includes: a first transceiver and a first processor;
the first transceiver is used for receiving a network access request of a first terminal;
the first processor is configured to configure a network application service ID and corresponding traffic flow association information for the first terminal;
the first transceiver is further configured to send a user terminal routing policy message to the first terminal, where the user terminal routing policy message is used to indicate the network application service ID and the traffic flow association information corresponding to the network application service ID.
To achieve the above object, an embodiment of the present invention provides a terminal, including: a second transceiver and a second processor;
the second transceiver is used for sending a network access request to a network;
receiving a user terminal routing strategy message sent by a network, wherein the user terminal routing strategy message is used for indicating a network application service ID and corresponding business flow association information;
and the second processor is used for sending a service request carrying the network application service ID to a network when the service request is initiated, and establishing a protocol data unit session of the service.
To achieve the above object, an embodiment of the present invention provides a readable storage medium on which a program or instructions are stored, which when executed by a processor implement the data transmission method as described above.
The technical scheme of the invention has the following beneficial effects:
the data transmission method of the embodiment of the invention configures the network application service ID and the corresponding service flow association information for the terminal and selects the routing strategy routing through the user terminal, and performs different network configurations on different service flows, thereby effectively solving the problems that in the prior art, various service flows are transmitted on the same flow control layer, the requirements on the service flows sensitive to time delay, safety and bandwidth cannot be met, and the network deployment and migration of a wired access mode at the terminal side are inflexible. The efficiency and the reliability of service flow transmission are improved, and the time delay is reduced.
Drawings
Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention;
fig. 2 is a second flowchart of a data transmission method according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a traffic flow transmission method applied to remote driving according to an embodiment of the present invention;
FIG. 4 is a diagram of a data transmission apparatus according to an embodiment of the present invention;
fig. 5 is a second schematic diagram of a data transmission apparatus according to an embodiment of the invention;
fig. 6 is a structural diagram of a data transmission device of an embodiment of the present invention;
fig. 7 is a structural diagram of a terminal of an embodiment of the present invention;
fig. 8 is a block diagram of a data transmission terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
In addition, the terms "system" and "network" are often used interchangeably herein.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also be determined from a and/or other information.
For better understanding of the present invention, the following description will be made on the networking method of data transmission in the prior art:
the data transmission mode in the prior art mainly adopts two forms of a 4G/5G + data special line and a 4G/5G + Internet special line.
The data transmission through the 4G/5G + data dedicated line has the following disadvantages:
the network configuration is not flexible, the point-to-point position needs to be determined when a provincial-crossing data special line is opened, and the point-to-point position needs to be opened once when each demand exists, so that public network resources cannot be reused, and the position cannot be changed in a long distance;
the separation of network layers is not realized by all the service flows, all the service flows are data in the same flow control layer in network transmission, and the differential configuration of different service flows cannot be realized, so that the service flows sensitive to time delay, safety and bandwidth cannot meet the requirements;
the network redundancy guarantee is not enough, and once a certain node of the data private line fails, the whole link is possibly disconnected.
The disadvantages of data transmission via 4G/5G + Internet private line are as follows:
the non-optimized public network has larger instability, and the remote driving service needs to seize resources with various services on the public network, so that the network delay, the speed and the stability are difficult to meet various functions of remote driving;
the network link is too long, each service flow needs to flow from the access network to the convergence network, then flows to the core network, and then reversely passes through the convergence network to reach the access network of the destination, and the service flow also needs to pass through the link under the condition that the request side terminal and the target terminal are in the same park, so that the network delay is greatly increased;
the separation of network layers is not realized by all the service flows, all the service flows are data in the same flow control layer in network transmission, and the differential configuration of different service flows cannot be realized, so that the service flows sensitive to time delay, safety and bandwidth cannot meet the requirements;
and IP resources are occupied, the IP resources of the public network are scarce resources, and both a cockpit server and a platform server need to occupy the IP resources of the public network.
As shown in fig. 1, a data transmission method according to an embodiment of the present invention includes:
step 101, receiving a network access request of a first terminal.
Step 102, configuring a network application service ID and corresponding traffic flow association information for the first terminal.
Step 103, sending a user equipment routing Policy (UE Route Selection Policy, URSP) message to the first terminal, where the URSP message is used to indicate the network application service ID and the service flow association information corresponding to the network application service ID.
In an embodiment of the present invention, based on Data Network Name (DNN) configuration of a 5G core Network and capability of User Plane Function (UPF) forwarding, in combination with a terminal device with a URSP capability, an application service ID and corresponding traffic flow association information are dynamically written into a first terminal through the 5G core Network by using a URSP message. And classifying and grading different service flows at the network side according to the associated information of the service flows.
Optionally, the traffic flow association information includes:
at least one of a bandwidth, a latency indicator, and a security level of the traffic flow.
In an embodiment of the present invention, a service is processed in a hierarchical manner according to at least one of a bandwidth, a delay index, and a security level of a service flow; and selecting different data transmission channels according to the grade of the service flow.
The data transmission method of the embodiment of the invention carries out grading processing on different service flows, and effectively solves the problems that in the prior art, various service flows are transmitted on the same flow control layer, the requirements on service flows sensitive to time delay, safety and bandwidth cannot be met, and the wired access mode network deployment and migration at the terminal side are not flexible. The efficiency and the reliability of service flow transmission are improved, and the time delay is reduced.
Optionally, the sending the URSP message to the first terminal includes:
the real-time URSP message is sent to the first terminal through a Policy Control Function (PCF).
The data transmission method of the embodiment of the invention sends the real-time URSP message to the first terminal through the PCF, thereby ensuring the timeliness of the service flow association information.
Optionally, the method further comprises:
receiving a service request sent by a first terminal, wherein the service request carries the network application service ID;
determining business flow association information corresponding to the network application service ID, and selecting a target UPF for the business flow association information based on DNN, wherein the target UPF comprises UPF deployed at the edge of a network;
and forwarding the service flow to the target terminal by utilizing the special DNN data outlet of the target UPF.
In an embodiment of the present invention, a target UPF is selected for the service flow association information based on the DNN, where the target UPF may be a UPF of a core network or a UPF deployed at a network edge. Forwarding the traffic flow to the DNN-specific data egress by the target UPF.
The data transmission method of the embodiment of the invention adopts a URSP routing, UPF sinking and special DNN data export scheme to carry out data transmission together through a public network and a private network. The technical effects of selecting different data transmission links and network configurations aiming at different service flows and fusing the flexible universality of a public network and the safety and reliability of a private network are achieved.
Optionally, when the first terminal is a vehicle that receives remote driving control, the service flow includes: a stream of video data and a stream of vehicle status information;
when the first terminal is a remote cockpit, the service flow includes: a control information stream and a video data stream.
As shown in fig. 2, an embodiment of the present invention further provides a data transmission method, which is applied to a first terminal, and includes:
step 201, sending a network access request to a network;
step 202, receiving a URSP message sent by a network, wherein the URSP message is used for indicating a network application service ID and corresponding service flow association information;
step 203, when initiating a service request, sending a service request carrying the network application service ID to a network, and establishing a PDU session of the service.
The data transmission method of the embodiment of the invention realizes different stream data transmission on different stream control layers by carrying out differentiation configuration on the same service stream and carrying out classification processing on different service streams. The method and the device effectively solve the problems that in the prior art, various service flows are transmitted on the same flow control layer, the requirements on delay, safety and bandwidth sensitive service flows cannot be met, and the wired access mode network deployment and migration on a terminal side are inflexible. The efficiency and the reliability of service flow transmission are improved, and the time delay is reduced.
Optionally, the data transmission method further includes:
receiving signing Data of session Management sent by a Unified Data Management (UDM);
and receiving the control strategy of the session management sent by the PCF.
The data transmission method of the embodiment of the invention improves the safety and reliability of the service flow transmission by confirming the subscription data and the control strategy of the session management.
In the embodiment of the invention, the data transmission method can be used in various remote control technologies including remote driving, remote workshop and industrial production of dangerous scenes.
For example, the data transmission method of the embodiment of the invention is applied to remote driving technology. In the prior art, data transmission among a vehicle side, a remote cockpit side and a platform side is carried out through a 4G/5G + data special line or a 4G/5G + internet special line.
The data transmission through the 4G/5G + data special line comprises the following steps:
a step-over-provincial data special line is opened among the vehicle side machine room, the remote cockpit side machine room and the platform side machine room, and a private local area network is constructed;
a 4G/5G user identification card (SIM) is opened at the vehicle side, 4G/5G CPE customer front-end equipment is inserted, and a Virtual Private Network (VPN) is set in the CPE to access a machine room Private Network at the vehicle side;
the remote cockpit is connected with a remote cockpit side machine room through an intranet net mouth so as to be accessed to a private network;
the platform is directly arranged in any machine room communicated with a data special line and is accessed to a private network through a network line.
The steps of data transmission by the 4G/5G + Internet special line are as follows:
connecting internet special lines at the side of the remote cockpit and the side of the platform, and ensuring that the vehicle side is covered by a continuous 4G/5G base station;
an operator allocates a plurality of public network IPs, configures the public network IPs into a remote cockpit server and a platform side server, and generally allocates different IP addresses to video stream and control stream for processing;
the vehicle side opens a 4G/5G SIM card, and a 4G/5G Customer Premise Equipment (CPE) is inserted, so that public network connection can be established.
The data transmission method of the embodiment of the invention is applied to the remote driving technology, and the transmission link of the service flow is shown in fig. 3.
Transmission link of control flow information: the remote control cabin forms a control signal by simulating a steering wheel, a pedal and a gear lever, the control signal is processed by a server at the remote control cabin side, a control instruction is sent to a vehicle, the vehicle-mounted communication module receives control information and forwards the control information to a vehicle-mounted Controller, and the Controller sends the control instruction to the whole vehicle Controller through a Controller Area Network (CAN) bus.
Specifically, control flow information is generated by a remote cockpit, after signal processing is carried out by a cockpit-side server, the control flow information is transmitted to a nearby 5G base station through a 5G module on the cockpit side, the base station selects UPF (namely target UPF deployed at the edge of a network) of a park where a vehicle is located, the UPF is transmitted to the vehicle-side base station through a special DNN data outlet of the UPF for the control flow park, and the vehicle 5G module receives a base station signal and sends a control signal to a vehicle-mounted controller to realize control of the remote cockpit on the vehicle.
The transmission link of the video stream information is as follows: the vehicle-mounted camera captures video pictures around the vehicle body, the video pictures are sent out through the vehicle-mounted communication module, the video pictures reach the server at the side of the remote cockpit, the server is used for a remote driver to observe through the display equipment, and the server forwards the video to the platform for the platform to call.
Specifically, video stream information is generated by a vehicle side, the video stream information is transmitted to a nearby base station through a vehicle-mounted 5G module, the base station selects a UPF (unified power flow) of an area where a remote cockpit is located, the UPF reaches the base station at the cockpit side through a special DNN (digital network) data outlet of a video stream park of the UPF, the base station signal is received by the 5G module at the cockpit side, the base station signal is transmitted to a server of the remote cockpit through a local area network, and video playing is performed through a display device connected with the server.
Meanwhile, the remote cockpit server forwards the received vehicle-mounted video to the cloud platform, and the specific link is as follows: the cockpit server transmits video information to the nearby base station through the 5G module, the base station selects the UPF on the cloud platform side, the UPF reaches the platform server through a special DNN data outlet of the UPF for the video streaming platform, and the functions of cloud storage, analysis, playback and the like of the video information are achieved.
The transmission link of the information flow information is as follows: the vehicle-mounted controller captures vehicle state information through the CAN bus, the vehicle state information is sent to the cloud platform through the communication module for use of services such as platform data analysis and early warning prompt, and the platform sends a data processing result to the remote cockpit for use by a remote driver.
Specifically, vehicle state information flow is obtained by a vehicle-mounted controller through a CAN bus and is sent to a nearby base station of a park where vehicles are located through a vehicle-mounted 5G module, the base station selects a cloud platform side UPF and a remote cockpit side UPF respectively, the information flow platform special DNN data outlet of the UPF reaches a platform server and the information flow park special DNN data outlet of the UPF reaches a cockpit side base station, the platform collects and analyzes vehicle state data and generates information such as monitoring and early warning, and meanwhile, the cockpit side 5G module receives base station information for processing by the cockpit server and displays the vehicle state data in real time through a display device connected with the server.
When the vehicle and the cockpit are in the same park area, the same base station can be shared, and the UPF deployed in the park area is used for transmitting the service flow, so that the transmission efficiency of the service flow is greatly improved, and the transmission delay is reduced.
It should be noted that the vehicle non-sensitive data stream can be accessed to the internet through the vehicle-mounted 5G module, so that the functions of video entertainment, third-party APP service and the like are realized.
For example, the data transmission method according to the embodiment of the present invention is applied to a remote workshop technology.
Transmission link of control flow information: the remote control cabin forms a control signal through the simulation operation panel, the control signal is processed by the server at the side of the remote control cabin and sends a control instruction to the equipment, the communication module of the equipment receives the control information and forwards the control information to the equipment controller, and the controller sends the control instruction to the equipment.
Specifically, control flow information is generated by a remote control cabin, after signal processing is performed by a control cabin side server, the control flow information is transmitted to a nearby 5G base station through a 5G module on a control cabin side, the base station selects a UPF (namely a target UPF deployed at the edge of a network) of a park where equipment is located, the UPF is transmitted to the equipment side base station through a special DNN data outlet of the UPF for the control flow park, and the equipment 5G module receives a base station signal and transmits a control signal to a controller, so that control of the equipment by the remote control cabin is realized. If the remote control cabin is closer to the equipment, one base station can be shared, and a data transmission link is directly formed by the base station and the UPF in the same park, so that the transmission delay of the service flow is reduced.
As shown in fig. 4, an embodiment of the present invention further provides a data transmission apparatus 400, including:
a first receiving module 401, configured to receive a network access request of a first terminal;
a configuration module 402, configured to configure a network application service ID and corresponding traffic flow association information for the first terminal;
a first sending module 403, configured to send a URSP message to the first terminal, where the URSP message is used to indicate the network application service ID and the traffic flow association information corresponding to the network application service ID.
Optionally, the apparatus further comprises:
a second receiving module, configured to receive a service request sent by a first terminal, where the service request carries the network application service ID;
a determining module, configured to determine service flow association information corresponding to the network application service ID, and select a target UPF for the service flow association information based on DNN, where the target UPF includes a UPF deployed at a network edge;
and the forwarding module is used for forwarding the service flow to the target terminal by utilizing the special DNN data outlet of the target UPF.
The data transmission device of the embodiment of the invention configures the network application service ID and the corresponding service flow association information for the terminal and performs different network configurations on different service flows through URSP routing, thereby effectively solving the problems that in the prior art, various service flows are transmitted on the same flow control layer, the requirements on time delay, safety and bandwidth sensitive service flows cannot be met, and the wired access mode network deployment and migration on the terminal side are inflexible. The efficiency and the reliability of service flow transmission are improved, and the time delay is reduced.
As shown in fig. 5, an embodiment of the present invention further provides a data transmission apparatus 500, including:
a second sending module 501, configured to send a network access request to a network;
a third receiving module 502, configured to receive a URSP message sent by a network, where the URSP message is used to indicate a network application service ID and corresponding traffic flow association information;
the establishing module 503 is configured to send a service request carrying the network application service ID to a network when a service request is initiated, and establish a PDU session of the service.
The data transmission device of the embodiment of the invention realizes different stream data transmission on different stream control layers by carrying out differentiation configuration on the same service stream and carrying out classification processing on different service streams. The method and the device effectively solve the problems that in the prior art, various service flows are transmitted on the same flow control layer, the requirements on delay, safety and bandwidth sensitive service flows cannot be met, and the wired access mode network deployment and migration on a terminal side are inflexible. The efficiency and the reliability of service flow transmission are improved, and the time delay is reduced.
As shown in fig. 6, a data transmission apparatus 600 according to an embodiment of the present invention is applied to a core network element, and includes: a first transceiver 610 and a first processor 620, wherein:
the first transceiver is used for receiving a network access request of a first terminal;
the first processor is configured to configure a network application service ID and corresponding traffic flow association information for the first terminal;
the first transceiver is further configured to send a URSP message to the first terminal, where the URSP message is used to indicate the network application service ID and its corresponding traffic flow association information.
The data transmission equipment of the embodiment of the invention configures the network application service ID and the corresponding service flow association information for the terminal and performs different network configurations on different service flows through URSP routing, thereby effectively solving the problems that in the prior art, various service flows are transmitted on the same flow control layer, the requirements on time delay, safety and bandwidth sensitive service flows cannot be met, and the wired access mode network deployment and migration on the terminal side are inflexible. The efficiency and the reliability of service flow transmission are improved, and the time delay is reduced.
As shown in fig. 7, a terminal 700 according to an embodiment of the present invention includes: a second transceiver 710 and a second processor 720, wherein:
the second transceiver is used for sending a network access request to a network;
receiving URSP message sent by a network, wherein the URSP message is used for indicating a network application service ID and corresponding business flow association information;
and the second processor is used for sending a service request carrying the network application service ID to a network when a service request is initiated, and establishing a PDU session of the service.
The terminal of the embodiment of the invention realizes different stream data transmission on different stream control levels by carrying out differentiation configuration on the same service stream and carrying out classification processing on different service streams. The method and the device effectively solve the problems that in the prior art, various service flows are transmitted on the same flow control layer, the requirements on delay, safety and bandwidth sensitive service flows cannot be met, and the wired access mode network deployment and migration on a terminal side are inflexible. The efficiency and the reliability of service flow transmission are improved, and the time delay is reduced.
A data transmission terminal according to another embodiment of the present invention, as shown in fig. 8, includes a transceiver 810, a processor 800, a memory 820, and a program or instructions stored in the memory 820 and executable on the processor 800; the processor 800, when executing the program or instructions, implements the method described above as applied to data transmission.
The transceiver 810 is used for receiving and transmitting data under the control of the processor 800.
Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 800 and memory represented by memory 820. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 810 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 830 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.
The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.
The readable storage medium of the embodiment of the present invention stores a program or an instruction thereon, and the program or the instruction when executed by the processor implements the steps in the data transmission method described above, and can achieve the same technical effects, and the details are not repeated here to avoid repetition.
The processor is the processor in the data transmission described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It is further noted that the terminals described in this specification include, but are not limited to, smart phones, tablets, cars subject to remote driving control, etc., and that many of the functional components described are referred to as modules in order to more particularly emphasize their implementation independence.
In embodiments of the present invention, modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.
Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within the modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.
When a module can be implemented by software, considering the level of existing hardware technology, a module implemented by software may build a corresponding hardware circuit to implement a corresponding function, without considering cost, and the hardware circuit may include a conventional Very Large Scale Integration (VLSI) circuit or a gate array and an existing semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
The exemplary embodiments described above are described with reference to the drawings, and many different forms and embodiments of the invention may be made without departing from the spirit and teaching of the invention, therefore, the invention is not to be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of elements may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Unless otherwise indicated, a range of values, when stated, includes the upper and lower limits of the range and any subranges therebetween.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (7)

1. A data transmission method applied to a core network element, comprising:
receiving a network access request of a first terminal;
configuring a network application service ID and corresponding business flow association information for the first terminal;
sending a user terminal routing strategy message to a first terminal, wherein the user terminal routing strategy message is used for indicating the network application service ID and the corresponding business flow association information;
receiving a service request sent by a first terminal, wherein the service request carries the network application service ID;
determining service flow association information corresponding to the network application service ID, and selecting a target user plane function for the service flow association information based on a data network name, wherein the target user plane function comprises user plane functions deployed at a core network and a network edge;
forwarding the service flow to a target terminal by utilizing a special data network name data outlet of the target user plane function;
and when the target terminal and the first terminal are both in the first park, the target user plane function is a user plane function deployed in the first park.
2. The data transmission method according to claim 1, wherein the traffic flow association information comprises:
at least one of a bandwidth, a latency indicator, and a security level of the traffic flow.
3. The data transmission method according to claim 1, wherein the sending the user terminal routing policy message to the first terminal comprises:
and sending a real-time user terminal routing strategy message to the first terminal through the strategy control function module.
4. The data transmission method according to claim 2, wherein when the first terminal is a vehicle that is subject to remote driving control, the traffic flow includes: a stream of video data and a stream of vehicle status information;
when the first terminal is a remote cockpit, the service flow includes: a control information stream and a video data stream.
5. A data transmission apparatus, comprising:
a first receiving module, configured to receive a network access request of a first terminal;
a configuration module, configured to configure a network application service ID and corresponding traffic flow association information for the first terminal;
a first sending module, configured to send a user terminal routing policy message to a first terminal, where the user terminal routing policy message is used to indicate the network application service ID and traffic flow association information corresponding to the network application service ID;
a second receiving module, configured to receive a service request sent by a first terminal, where the service request carries the network application service ID;
a determining module, configured to determine service flow association information corresponding to the network application service ID, and select a target user plane function for the service flow association information based on a data network name, where the target user plane function includes a user plane function deployed at a network edge;
the forwarding module is used for forwarding the service flow to a target terminal by utilizing a special data network name data outlet of the target user plane function;
wherein the user plane functions of the network edge include: and the user plane function of the park where the target terminal is located.
6. A data transmission apparatus, applied to a core network element, comprising: a first transceiver and a first processor;
the first transceiver is used for receiving a network access request of a first terminal;
the first processor is configured to configure a network application service ID and corresponding traffic flow association information for the first terminal;
the first transceiver is further configured to send a user terminal routing policy message to a first terminal, where the user terminal routing policy message is used to indicate the network application service ID and traffic flow association information corresponding to the network application service ID;
the first transceiver is further configured to receive a service request sent by a first terminal, where the service request carries the network application service ID;
the first processor is configured to determine service flow association information corresponding to the network application service ID, and select a target user plane function for the service flow association information based on a data network name, where the target user plane function includes user plane functions deployed at a core network and a network edge;
the first processor is further configured to forward the service flow to a target terminal by using a private data network name data outlet of the target user plane function;
and when the target terminal and the first terminal are both in the first park, the target user plane function is a user plane function deployed in the first park.
7. A readable storage medium on which a program or instructions are stored, the program or instructions, when executed by a processor, implementing the data transmission method according to any one of claims 1 to 4.
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