A registration method and device for user equipment ue

Abstract

Embodiments of the present invention provide a registration method and device for user equipment UE, including: the NG-RAN base station receives the registration request message sent by the UE; the NG-RAN base station uses the registration request message to send the initial UE message to the initial AMF; NG-RAN The RAN base station receives the rerouting request message returned by the initial AMF for the initial UE message; the rerouting request message includes state parameters; the NG-RAN base station uses the state parameters and the initial UE message to generate a target UE message; the NG-RAN base station sends the target UE message Send to the target AMF; the target AMF uses the target UE message to generate a registration acceptance message, and sends the registration acceptance message to the NG-RAN base station; the NG-RAN base station sends the registration acceptance message to the UE. This avoids information asymmetry between the UE and the AMF that may be caused by the uncertainty of the completed process, thereby avoiding the situation of registration failure.

Description

technical field [0001] The present invention relates to the technical field of registration, and in particular, to a registration method for user equipment UE and a registration device for user equipment UE. Background technique [0002] During the attachment process, after the initial UE message is sent to the AMF (Access and Mobility Management Function) network element of the core network due to the slice selection of the base station and other reasons, the AMF, due to the isolation of slices, The initial UE message is sent back to the base station NG-RAN (Next Generation Radio Access Network, next generation radio access network) by rerouting the NAS (Non-access stratum, non-access stratum) request. And based on the redirection of the NA-RAN base station, it is sent to the new AMF for processing. [0003] However, according to the existing 3GPP (3rd Generation Partnership project, 3rd Generation Partnership Project) processing method, there may be cases where multiple d...

AI Technical Summary

Problems solved by technology

[0003] However, according to the existing 3GPP (3rd Generation Partnership project, 3rd Generation Partnership Project) processing method, there will be a situation where multiple devices have partial interaction with the UE. During the redirection process through the NG-RAN base station, the core The internal network cannot know the situation of the process that has been carried out

The authentication information and security context between the 5G core network and the UE may be out of sync, causing the process to fail in some cases

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