3GPP TS 24.301: NAS协议标准详解

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"3GPPTS24.301V10.15.0(2014-09)" 是一份3rd Generation Partnership Project (3GPP) 的技术规范文档，专注于非接入层（NAS）协议在演进分组系统（EPS）中的应用，处于3GPP的第3阶段（Release 10）。该文档是3GPP内部开发的，未经3GPP组织伙伴的批准，仅供3GPP的未来开发工作使用。 NAS（Non-Access-Stratum）协议是移动通信网络中控制层面的一个重要组成部分，主要处理终端（UE）与网络之间的非无线链路通信。在EPS中，它主要服务于LTE（Long Term Evolution）和UMTS（Universal Mobile Telecommunications System）网络，确保用户设备能够有效地接入和使用网络服务。此文档详细定义了NAS协议的信令流程、消息结构以及交互过程，包括注册、会话管理、移动性管理、安全性管理和计费等功能。例如，它可能会涵盖如何进行初始附着、鉴权、移动性管理（如切换和重定向）、会话建立和终止等操作。NAS协议也负责UE与网络之间的安全协商，确保通信的安全性。 Release 10是3GPP的一个重要版本，引入了多项增强功能，如更高效的数据传输、更好的服务质量（QoS）支持以及对多模终端的支持，使得UE可以在不同的网络技术之间无缝切换。关键词如UMTS、GSM、EPS、GPRS、stage3、radio、layer3、user equipment、network、LTE，揭示了文档涵盖了广泛的移动通信技术，从2G的GSM（Global System for Mobile Communications）和GPRS（General Packet Radio Service）到3G的UMTS和4G的LTE网络。 3GPP是全球性的标准化组织，致力于制定移动通信系统的规范和技术报告。其公开发布的文档可通过3GPP组织伙伴的出版办公室获取。这份特定的技术规范可能对于从事LTE终端开发和移动通信研究的工程师来说是必不可少的参考材料，它提供了实现3GPP系统所需的技术细节。

3GPP

3GPP TS 24.301 V10.15.0 (2014-09)

Release 10

Foreword

This Technical Specification has been produced by the 3

Generation Partnership Project (3GPP).

The contents of the present document are subject to continuing work within the TSG and may change following formal

TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an

identifying change of release date and an increase in version number as follows:

Version x.y.z

where:

x the first digit:

1 presented to TSG for information;

2 presented to TSG for approval;

3 or greater indicates TSG approved document under change control.

y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates,

etc.

z the third digit is incremented when editorial only changes have been incorporated in the document.

3GPP

3GPP TS 24.301 V10.15.0 (2014-09)

Release 10

1 Scope

The present document specifies the procedures used by the protocols for mobility management and session management

between User Equipment (UE) and Mobility Management Entity (MME) in the Evolved Packet System (EPS). These

protocols belong to the non-access stratum (NAS).

The EPS Mobility Management (EMM) protocol defined in the present document provides procedures for the control of

mobility when the User Equipment (UE) is using the Evolved UMTS Terrestrial Radio Access Network (E-UTRAN).

The EMM protocol also provides control of security for the NAS protocols.

The EPS Session Management (ESM) protocol defined in the present document provides procedures for the handling of

EPS bearer contexts. Together with the bearer control provided by the access stratum, this protocol is used for the

control of user plane bearers.

For both NAS protocols the present document specifies procedures for the support of inter-system mobility between

E-UTRAN and other 3GPP or non-3GPP access networks:

- For inter-system mobility between E-UTRAN and GERAN or UTRAN, this includes rules for a mapping

between parameters and procedures used by the NAS protocols defined in the present document and the NAS

protocols specified in 3GPP TS 24.008 [13].

- For inter-system mobility between E-UTRAN and generic non-3GPP access networks, this includes specific

NAS procedures to maintain IP connectivity to the PDN Gateway and to provide parameters needed by the UE

when using mobility management based on Dual-Stack Mobile IPv6 (see 3GPP TS 24.303 [14]) or MIPv4

(see 3GPP TS 24.304 [15]).

The present document is applicable to the UE and to the Mobility Management Entity (MME) in the EPS.

The present document is also applicable to the relay node in the EPS (see 3GPP TS 23.401 [10]).

2 References

The following documents contain provisions which, through reference in this text, constitute provisions of the present

document.

 References are either specific (identified by date of publication, edition number, version number, etc.) or

non-specific.

 For a specific reference, subsequent revisions do not apply.

 For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including

a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same

Release as the present document.

[1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".

[1A] 3GPP TS 22.011: "Service accessibility".

[1B] Void.

[1C] 3GPP TS 22.278: "Service requirements for the Evolved Packet System (EPS)".

[2] 3GPP TS 23.003: "Numbering, addressing and identification".

[3] 3GPP TS 23.038: "Alphabets and language-specific information".

[4] 3GPP TS 23.060: "General Packet Radio Service (GPRS); Service Description; Stage 2".

[5] 3GPP TS 23.107: "Quality of Service (QoS) concept and architecture".

3GPP

3GPP TS 24.301 V10.15.0 (2014-09)

Release 10

[6] 3GPP TS 23.122: "Non-Access-Stratum functions related to Mobile Station (MS) in idle mode".

[7] 3GPP TS 23.203: "Policy and charging control architecture".

[8] 3GPP TS 23.216: "Single Radio Voice Call Continuity (SRVCC); Stage 2".

[8A] 3GPP TS 23.221: "Architectural requirements".

[8B] 3GPP TS 23.251: "Network Sharing; Architecture and Functional Description".

[9] 3GPP TS 23.272: "Circuit Switched Fallback in Evolved Packet System; Stage 2".

[10] 3GPP TS 23.401: "GPRS enhancements for E-UTRAN access".

[11] 3GPP TS 23.402: "GPRS architecture enhancements for non-3GPP accesses".

[12] 3GPP TS 24.007: "Mobile radio interface signalling layer 3; General aspects".

[13] 3GPP TS 24.008: "Mobile Radio Interface Layer 3 specification; Core Network Protocols;

Stage 3".

[13A] 3GPP TS 24.011: "Point-to-Point Short Message Service (SMS) support on mobile radio interface".

[13B] 3GPP TS 24.167: "3GPP IMS Management Object (MO); Stage 3".

[13C] 3GPP TS 24.171: "NAS Signalling for Control Plane LCS in Evolved Packet System (EPS)".

[13D] 3GPP TS 24.229: "IP multimedia call control protocol based on Session Initiation Protocol (SIP)

and Session Description Protocol (SDP); Stage 3".

[14] 3GPP TS 24.303: "Mobility Management based on DSMIPv6; User Equipment (UE) to network

protocols; Stage 3".

[15] 3GPP TS 24.304: "Mobility management based on Mobile IPv4; User Equipment (UE) - foreign

agent interface; Stage 3".

[15A] 3GPP TS 24.368: "Non-Access Stratum (NAS) configuration Management Object (MO)".

[15B] 3GPP TS 25.304: "User Equipment (UE) procedures in idle mode and procedures for cell

reselection in connected mode".

[15C] 3GPP TS 29.002: "Mobile Application Part (MAP) specification".

[16] 3GPP TS 29.061: "Interworking between the Public Land Mobile Network (PLMN) supporting

packet based services and Packet Data Networks (PDN)".

[16A] 3GPP TS 29.118: "Mobility Management Entity (MME) – Visitor Location Register (VLR) SGs

interface specification".

[16B] 3GPP TS 29.212: "Policy and Charging Control over Gx reference point".

[16C] 3GPP TS 29.272: "Evolved Packet System (EPS); Mobility Management Entity (MME) and

Serving GPRS Support Node (SGSN) related interfaces based on Diameter protocol".

[17] 3GPP TS 31.102: "Characteristics of the Universal Subscriber Identity Module (USIM)

application".

[18] 3GPP TS 33.102: "3G security; Security architecture".

[19] 3GPP TS 33.401: "3GPP System Architecture Evolution; Security architecture".

[20] 3GPP TS 36.300: "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal

Terrestrial Radio Access Network (E-UTRAN); Overall description".

3GPP

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Release 10

[21] 3GPP TS 36.304: "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE)

procedures in idle mode".

[22] 3GPP TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource

Control (RRC) protocol specification".

[22A] 3GPP TS 36.355: "Evolved Universal Terrestrial Radio Access (E-UTRA); LTE Positioning

Protocol (LPP)".

[23] 3GPP TS 36.413: "Evolved Universal Terrestrial Access Network (E-UTRAN); S1 Application

Protocol (S1AP)".

[23A] 3GPP TS 45.008: "Radio Access Network; Radio subsystem link control".

[24] IETF RFC 2131 (March 1997): "Dynamic Host Configuration Protocol".

[24A] IETF RFC 3633 (December 2003): "IPv6 Prefix Options for Dynamic Host Configuration Protocol

(DHCP) version 6".

[25] IETF RFC 3736 (April 2004): "Stateless Dynamic Host Configuration Protocol (DHCP) Service

for IPv6".

[26] IETF RFC 4039 (March 2005): "Rapid Commit Option for the Dynamic Host Configuration

Protocol version 4 (DHCPv4)".

[27] IETF RFC 4861 (September 2007): "IPv6 Neighbor Discovery for IP version 6 (IPv6)".

[28] IETF RFC 4862 (September 2007): "IPv6 Stateless Address Autoconfiguration".

[29] ISO/IEC 10646: "Information technology – Universal Multiple-Octet Coded Character Set (UCS)".

[30] ITU-T Recommendation E.212: "The international identification plan for mobile terminals and

mobile users".

3 Definitions and abbreviations

3.1 Definitions

For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [1] and the following

apply. A term defined in the present document takes precedence over the definition of the same term, if any, in

3GPP TR 21.905 [1].

1x CS fallback capable UE: A UE that uses a CS infrastructure for a voice call and other CS-domain services by

falling back to cdma2000

1x access network if the UE is served by E-UTRAN when a CS service is requested.

Aggregate maximum bit rate: The maximum bit rate that limits the aggregate bit rate of a set of non-GBR bearers of a

UE. Definition derived from 3GPP TS 23.401 [10].

Attached for emergency bearer services: A UE is attached for emergency bearer services if it has only a PDN

connection for emergency bearer services established.

CS fallback capable UE: A UE that uses a CS infrastructure for a voice call and other CS-domain services by falling

back to A/Gb or Iu mode if the UE is served by E-UTRAN when a CS service is requested.

CSG cell: A cell in which only members of the CSG can get normal service. Depending on local regulation, the CSG

cell can provide emergency bearer services also to subscribers who are not member of the CSG. Definition derived from

3GPP TS 23.401 [10].

3GPP

3GPP TS 24.301 V10.15.0 (2014-09)

Release 10

CSG ID: A CSG ID is a unique identifier within the scope of one PLMN defined in 3GPP TS 23.003 [2] which

identifies a Closed Subscriber Group (CSG) in the PLMN associated with a cell or group of cells to which access is

restricted to members of the CSG.

CSG selection: A UE supporting CSG selection selects CSG cell either automatically based on the list of allowed CSG

identities or manually based on user selection of CSG on indication of list of available CSGs. Definition derived from

3GPP TS 23.122 [6].

Dedicated bearer: An EPS bearer that is associated with uplink packet filters in the UE and downlink packet filters in

the PDN GW where the filters only match certain packets. Definition derived from 3GPP TS 23.401 [10].

Default bearer: An EPS bearer that gets established with every new PDN connection. Its context remains established

throughout the lifetime of that PDN connection. A default EPS bearer is a non-GBR bearer. Definition derived from

3GPP TS 23.401 [10].

Emergency EPS bearer context: A default EPS bearer context which was activated with request type "emergency", or

any dedicated EPS bearer context associated to this default EPS bearer context.

EMM context: An EMM context is established in the UE and the MME when an attach procedure is successfully

completed.

EMM-CONNECTED mode: A UE is in EMM-CONNECTED mode when a NAS signalling connection between UE

and network is established. The term EMM-CONNECTED mode used in the present document corresponds to the term

ECM-CONNECTED state used in 3GPP TS 23.401 [10].

EMM-IDLE mode: A UE is in EMM-IDLE mode when no NAS signalling connection between UE and network exists.

The term EMM-IDLE mode used in the present document corresponds to the term ECM-IDLE state used in

3GPP TS 23.401 [10].

EPS security context: In the present specification, EPS security context is used as a synonym for EPS NAS security

context specified in 3GPP TS 33.401 [19].

EPS services: Within the context of this specification, EPS services is used as a synonym for GPRS services in

3GPP TS 24.008 [13].

Evolved packet core network: The successor to the 3GPP Release 7 packet-switched core network, developed by

3GPP within the framework of the 3GPP System Architecture Evolution (SAE).

Evolved packet system: The evolved packet system (EPS) or evolved 3GPP packet-switched domain consists of the

evolved packet core network and the evolved universal terrestrial radio access network. Definition derived from

3GPP TS 23.401 [10].

GBR bearer: An EPS bearer that uses dedicated network resources related to a guaranteed bit rate (GBR) value, which

are permanently allocated at EPS bearer establishment/modification. Definition derived from 3GPP TS 23.401 [10].

General NAS level mobility management congestion control: The type of congestion control that is applied at a

general overload or congestion situation in the network, e.g. lack of processing resources.

Initial NAS message: A NAS message is considered as an initial NAS message, if this NAS message can trigger the

establishment of a NAS signalling connection. For instance, the ATTACH REQUEST message is an initial NAS

message.

IPv4v6 capability: Capability of the IP stack associated with a UE to support a dual stack configuration with both an

IPv4 address and an IPv6 address allocated.

Kilobit: 1000 bits.

Last Visited Registered TAI: A TAI which is contained in the TAI list that the UE registered to the network and

which identifies the tracking area last visited by the UE.

Linked Bearer Identity: This identity indicates to which default bearer the additional bearer resource is linked.

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