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A communication method and device

A communication method and area information technology, applied in the field of communication methods and devices, capable of solving problems such as transmission failures

Active Publication Date: 2021-01-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a communication method and device to solve the problem of how to avoid the failure of the downlink data transmission of the terminal when the terminal replaces the UPF

Method used

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  • A communication method and device
  • A communication method and device
  • A communication method and device

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Embodiment Construction

[0151] The application will be described in further detail below in conjunction with the accompanying drawings.

[0152] The embodiments of the present application can be applied to various mobile communication systems, such as 5G (eg, New Radio (NR), 5G Core Network system) and other mobile communication systems.

[0153] As mentioned above, the method and device provided by the embodiments of the present application can be applied to a 5G system. In the 5G network architecture under discussion, there are many possible architectures. Such as figure 1 Shown is a schematic diagram of a possible 5G network architecture. exist figure 1 The shown network architecture includes network data analysis device (Network Data Analytics, NWDA) access and mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), policy control function ( Policy Control Function, PCF), access network (Access Network, AN) (m...

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Abstract

The present application discloses a communication method and device, wherein the method includes: an access network element receives tunnel information of a first session from a mobility management network element; the tunnel information is a combination of the access network element and the received The tunnel information between the first user plane network elements of the downlink data of the terminal; the access network element determines that the tunnel information is invalid, and sends the first information to the session management network element, and the first information uses to indicate that the tunnel information is invalid.

Description

technical field [0001] The present application relates to the field of information technology, and in particular to a communication method and device. Background technique [0002] In the Long Term Evolution (LTE) system, the Tracking Area Identifier (TAI) in the Tracking Area List (Tracking Area List, TAList) assigned by the Mobility Management Entity (MME) to the terminal belongs to The service area of ​​the same serving gateway (Serving Gateway, SGW). Correspondingly, in the 5G system, the Access and Mobility Management Function (Access and Mobility Management Function, AMF) entity allocates a registration area list for the terminal. The AMF entity selects a suitable session management function (Session Management Function, SMF) entity for the session, and each SMF entity interfaces with at least one user plane function (User Plane Function, UPF). [0003] When a session is deactivated, the radio access network (RAN) resource of the session is released, and the N3 inter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W36/32
CPCH04W36/0011H04W36/0055H04W36/32H04W48/20H04W60/04H04W68/005H04W76/22H04W8/02H04W4/021H04W4/025H04W8/12H04W48/16H04W80/10
Inventor 唐廷芳李岩倪慧
Owner HUAWEI TECH CO LTD