3GPP NAS 24.301：EPS移动与会话管理协议规范

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3GPP NAS 24.301是欧洲电信标准协会(ETSI)制定的一项关键技术规范，专注于在演进分组系统(Evolved Packet System, EPS)中的用户设备(User Equipment, UE)与移动管理实体(Mobility Management Entity, MME)之间的移动管理和会话管理协议。该规范属于非接入层(Non-Access Stratum, NAS)范畴，适用于3GPP Stage 3的演进，对应于3GPP Technical Specification (TS) 24.301的第9.11.0版本，发布于2013年4月。这个标准文档ETSI TS 124301 V9.11.0详细规定了以下内容： 1. **通用移动通信系统(UMTS)**：NAS协议是在UMTS网络架构基础上设计的，确保了不同无线接入技术之间的无缝过渡，尤其是在向长期演进(LTE)演进的过程中。 2. **LTE接口**：尽管文档重点在于EPS，但NAS 24.301也涉及与LTE的协同工作，确保UE在从UMTS切换到LTE或反之时，能够维持连续性并进行有效的连接管理。 3. **非接入层协议**：NAS负责处理与接入网(Access Stratum)相对应的高层功能，如鉴权、寻呼、承载建立等，这些都是实现UE与核心网络间交互的基础。 4. **3GPP Release 9**：这是NAS 24.301规范的发布时间，标志着它是在3GPP的第九个主要版本中发布的，反映了当时的技术成熟度和标准化进程。 5. **ETSI组织信息**：文档由ETSI发布，其位于法国索菲亚安提波利斯的地址，提供下载链接以便用户获取纸质版或电子版的最新标准。如有版本差异，以PDF格式在特定网络驱动器上的印刷版为准。 6. **用户注意事项**：使用此文档的用户需了解，可能存在不同版本的电子文档或打印版，官方参考版本是PDF格式，并且在ETSI内部服务器上保存的版本具有最终权威性。 3GPP NAS 24.301是通信行业中用于优化移动性和会话管理的关键规范，它对于理解并操作UMTS和LTE网络中的UE-MME交互至关重要，尤其在部署和维护现代移动通信基础设施时具有重要意义。对于从事网络运营、设备制造或技术研发的专业人员来说，掌握这一标准是确保服务质量和无缝迁移的基础。

ETSI

ETSI TS 124 301 V9.11.0 (2013

04)

3GPP TS 24.301 version 9.11.0 Release 9

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.

ETSI

ETSI TS 124 301 V9.11.0 (2013

04)

3GPP TS 24.301 version 9.11.0 Release 9

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.

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] 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".

[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".

ETSI

ETSI TS 124 301 V9.11.0 (2013

04)

3GPP TS 24.301 version 9.11.0 Release 9

[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 25.304: "User Equipment (UE) procedures in idle mode and procedures for cell

reselection in connected mode".

[15B] 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 29.212: "Policy and Charging Control over Gx reference point".

[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".

[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".

ETSI

ETSI TS 124 301 V9.11.0 (2013

04)

3GPP TS 24.301 version 9.11.0 Release 9

[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 CSG 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].

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.

ETSI

ETSI TS 124 301 V9.11.0 (2013

04)

3GPP TS 24.301 version 9.11.0 Release 9

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].

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.

Mapped EPS security context: a mapped security context to be used in EPS. Definition derived from

3GPP TS 33.401 [19].

Megabit: 1,000,000 bits.

Message header: a standard L3 message header as defined in 3GPP TS 24.007 [12].

MME area: An area containing tracking areas served by an MME.

NAS signalling connection: is a peer to peer S1 mode connection between UE and MME. A NAS signalling

connection consists of the concatenation of an RRC connection via the "LTE-Uu" interface and an S1AP connection via

the S1 interface. Additionally, for the purpose of optimized handover or idle mode mobility from cdma2000

HRPD

access to E-UTRAN (see 3GPP TS 23.402 [11]), the NAS signalling connection can consist of a concatenation of an

S101-AP connection and a signalling tunnel over a cdma2000

HRPD access network.

NOTE: cdma2000

is a registered trademark of the Telecommunications Industry Association (TIA-USA).

NAS signalling connection recovery: is a mechanism initiated by the NAS to restore the NAS signalling connection on

indication of "RRC connection failure" by the lower layers.

Non-access stratum protocols: The protocols between UE and MSC or SGSN that are not terminated in the UTRAN,

and the protocols between UE and MME that are not terminated in the E-UTRAN. Definition derived from

3GPP TS 21.905 [1].

Non-emergency EPS bearer context: any EPS bearer context which is not an emergency EPS bearer context.

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