【LTE基础知识】NAS基本流程与NAS层功能和基本流程的映射关系

相关专题: 基础知识

NAS基本流程

NAS基本流程如下表所示。

基本流程

初始消息

应答消息

成功

未成功

Authentication procedure

AUTHENTICATION REQUEST

AUTHENTICATION RESPONSE

AUTHENTICATION  REJECT

Attach procedure for EPS services

ATTACH REQUEST

ATTACH ACCEPT

ATTACH REJECT

Detach procedure

DETACH REQUEST

DETACH ACCEPT

 

Paging procedure

REQUEST PAGING

SERVICE REQUESTTMSI

ATTACHIMSI

EXTENDED SERVICE REQUESTCS fallback to A/Gb or Iu mode

 

NAS层功能和基本流程的映射关系

NAS层功能和基本流程的映射关系如下表所示。

EPS mobility management

EPS session management

Authentication procedure

Principles of address handling for ESM procedures

Security mode control procedure

Default EPS bearer context activation procedure

Identification procedure

Dedicated EPS bearer context activation procedure

EMM information procedure

EPS bearer context modification procedure

Attach procedure for EPS services

EPS bearer context deactivation procedure

Detach procedure

UE requested PDN connectivity procedure

Tracking area updating procedure

UE requested PDN disconnect procedure

Service request procedure

UE requested bearer resource allocation procedure

Paging procedure

UE requested bearer resource modification procedure

Transport of NAS messages procedure

ESM information request procedure


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