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Communication method and device

A communication method and technology for identifying information, applied in the field of communication methods and devices, can solve problems such as non-compliance with requirements, inability to distinguish data streams, and user streams, etc.

Active Publication Date: 2021-10-01
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the N3 interface using the GTP-U protocol, the destination MAC addresses of different data flows are the MAC addresses of the next-hop switching device, so the data flows cannot be distinguished between the AN network element and the UPF network element based on the destination MAC address.
For the N3 interface using the Layer 2 protocol, the destination MAC address of the data flow depends on the MAC addresses of the communication parties or the MAC addresses of the services between the terminal device and the data network (date network, DN). Therefore, the services of users in different DNs or in Different services in the same DN may also have the same destination MAC address. Therefore, the data flow between the AN network element and the UPF network element cannot be distinguished according to the destination MAC address, which does not meet the requirements of the TSN network for data flow. The TSN network cannot be used to provide transmission services for different data streams
Since the user flow transmitted between the AN network element and the UPF network element is carried by the data flow, it is also impossible to distinguish the user flow between the AN network element and the UPF network element

Method used

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Embodiment Construction

[0083] The embodiments of this application are described based on the scenario of a 5G network in a wireless communication network. It should be noted that the solutions in the embodiments of this application can also be applied to other wireless communication networks, and the corresponding names can also be used in other wireless communication networks. Substitute with the name of the corresponding function.

[0084] Such as image 3 As shown in , the communication system architecture provided by the embodiment of the present application includes: a terminal device 301, a radio access network ((radio) access network, (R)AN) network element 302, an access and mobility management function (access and mobility management function, AMF) network element 303, session management function (session management function, SMF) network element 304, user plane function (user plane function, UPF) network element 305, application function (application function, AF) network element 306, cent...

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Abstract

The present application discloses a communication method and device, which relate to the field of communication and are used to realize the ability to distinguish user flows between AN network elements and UPF network elements. The communication method includes: the session management function network element sends session information and first identification information to the user plane function network element, or sends the session information and the user plane function network element indication information to the user plane function network element; the session management function network element Send the session information and the first identification information to the access network element.

Description

technical field [0001] The present application relates to the communication field, and in particular to a communication method and device. Background technique [0002] In the existing 5th generation (5th generation, 5G) communication technology, the communication network between the access network (access network, AN) network element and the user plane function (user plane function, UPF) network element includes multiple The routing device, AN network element or UPF network element is connected to the routing device through the N3 interface. The N3 interface can adopt Layer 2 protocol or such as figure 1 The GPRS tunnel protocol-user plane (GPRS tunnel protocol-user plane, GTP-U) protocol shown in , is used to transmit the message. [0003] Such as figure 2 As shown in , for example, the user message is encapsulated in Ethernet, where D-MAC2 represents the destination media access control (media access control, MAC) address, S-MAC2 represents the source MAC address, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W76/11
CPCH04W76/11
Inventor 李汉成吴问付周汉
Owner HUAWEI TECH CO LTD