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Method and device for system switching

A system switching and communication device technology, applied in connection management, wireless communication, electrical components, etc., can solve the problems of increasing delay and signaling

Active Publication Date: 2022-01-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a trial and error method increases the delay and signaling of the air interface

Method used

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  • Method and device for system switching
  • Method and device for system switching
  • Method and device for system switching

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Embodiment Construction

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0054] The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. The evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0055] The terminal device in the embodiment of the present application may refer to user equipment, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, t...

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Abstract

The present application provides a system switching method and device, the method comprising: when the PDU session to be established is a PDU session supporting intercommunication, the first communication network element receives the first indication information sent by the second communication network element, and the first The indication message is used to indicate that the PDU session is a PDU session supporting intercommunication; when the PDU session is the last PDU session supporting intercommunication that needs to be released, the first communication network element sends NAS information to the UE.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a method and device for system switching in a wireless communication system. Background technique [0002] Interworking between 5G network and 4G network In the existing 3GPP (3rd Generation Partnership Project, Third Generation Partnership Project) standard, there are two interworking modes: single registration mode and dual registration mode. In registration mode, when UE (ueser equipment, user equipment) supports single registration mode and the network supports intercommunication with N26 interface, for the transition from 5GC (5th generation core, fifth generation core network) to EPC (evolved packet core, evolution Mobile in the idle state of the packet core network), the UE performs the TAU (tracking area update, location area update) process of the 4G-GUTI mapped from the 5G-GUTI (globally unique temporary identity, globally unique temporary i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W68/02H04W76/30
CPCH04W36/0011H04W76/30H04W68/02
Inventor 孙海洋吴义壮熊春山
Owner HUAWEI TECH CO LTD