NAS主要流程与消息文档

Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS)

1. 概述

非接入层（NAS）是UE与MME之间的Uu无线接口的控制面的最高层。主要功能有：

1）对UE移动性的支持

2）对在UE和数据报网关之间建立和保持IP连接的会话管理程序的支持

2. EMM协议

2.1. EMM流程种类

1）EMM常规流程

-

-

-

-

-

GUTI reallocation;

authentication;

security mode control;

identification;

EMM information.

2）EMM特殊流程

-

-

-

-

attach and combined attach.

attach.

detach and combined detach.

normal tracking area updating and combined tracking area updating (S1

mode only);

- periodic tracking area updating (S1 mode only).

3）EMM连接管理流程（S1 mode only）

-

-

-

-

service request.

paging procedure.

transport of NAS messages;

generic transport of NAS messages.

2.2. EMM common procedures

GUTI reallocation procedure:

allocate a GUTI and optionally to provide a new TAI list to a particular UE.

UEGUTI REALLOCATION COMMANDMMEStart T3450Stop T3450GUTI REALLOCATION COMPLETE

Authentication procedure:

provide mutual authentication between the user and the network and to agree

on a key KASME

UEAUTHENTICATION REQUESTMMEStart T3460Stop T3460if

authentication

failedAUTHENTICATION RESPONSEAUTHENTICATION REJECT

Security mode control procedure:

take an EPS security context into use, and initialise and start NAS signalling

security between the UE and the MME with the corresponding EPS NAS keys and

EPS security algorithms

UESECURITY MODE COMMANDMMEStart T3460Stop T3460SECURITY MODE COMPLETEORSECURITY MODE REJECTStop T3460

Identification procedure:

request a particular UE to provide specific identification parameters, e.g. the

International Mobile Subscriber Identity (IMSI) or the International Mobile

Equipment Identity (IMEI)

UEIDENTITY REQUESTMMEStart T3470Stop T3470IDENTITY RESPONSE

EMM information procedure:

allow the network to provide information to the UE.

UEEMM INFORMATION2.3. EMM specific procedures

Attach procedure：

attach to an EPC for packet services in EPS

MME4

UEStart T3410ATTACH REQUESTMMEStop T3410ATTACH ACCEPTStart T3450ATTACH COMPLETEStop T3450ORATTACH REQUESTStart T3410ATTACH REJECTStop T3410

Detach procedure：

is used:

- by the UE to detach for EPS services only;

- by the UE to disconnect from the last PDN it is connected to;

- by the UE in CS/PS mode 1 or CS/PS mode 2 of operation to detach for both

EPS services and non-EPS services or for non-EPS services only via a

combined detach procedure;

- by the network to inform the UE that it is detached for EPS services or

non-EPS services or both;

- by the network to disconnect the UE from the last PDN to which it is

connected; and

- by the network to inform the UE to re-attach to the network and re-establish

all PDN connections.

UEStart T3421DETACH REQUESTMMEStop T3421DETACH ACCEPTor UE at switch off:DETACH REQUEST

Tracking area updating procedure (S1 mode only)：

initiated by the UE and is used for the following purposes:

- normal tracking area updating to update the registration of the actual

tracking area of a UE in the network;

- combined tracking area updating to update the registration of the actual

tracking area for a UE in CS/PS mode 1 or CS/PS mode 2 of operation;

- periodic tracking area updating to periodically notify the availability of the UE

to the network;

- IMSI attach for non-EPS services when the UE is attached for EPS services. This

procedure is used by a UE in CS/PS mode 1 or CS/PS mode 2 of operation;

- in various cases of inter-system change from Iu mode to S1 mode or from

A/Gb mode to S1 mode;

- S101 mode to S1 mode inter-system change;

- MME load balancing;

- to update certain UE specific parameters in the network;

- recovery from certain error cases;

- to indicate that the UE enters S1 mode after CS fallback or 1xCS fallback;

- to indicate to the network that the UE has selected a CSG cell whose CSG

identity and associated PLMN identity are not included in the UE's Allowed

CSG list or in the UE's Operator CSG list;

- to indicate the current radio access technology to the network for the support

of terminating access domain selection for voice calls or voice sessions; and

- to indicate to the network that the UE has locally released EPS bearer

context(s).

UEStart T3430TRACKING AREA UPDATE REQUESTMMEStop T3430If GUTI allocated,TRACKING AREA UPDATE ACCEPTIf GUTI allocated,Start T3450TRACKING AREA UPDATE COMPLETEStop T3450ORTRACKING AREA UPDATE REQUESTStart T3430Stop T3430TRACKING AREA UPDATE REJECT

2.4. EMM connection management procedures (S1 mode

only)

Service request procedure：

transfer the EMM mode from EMM-IDLE to EMM-CONNECTED mode and

establish the radio and S1 bearers when user data or signalling is to be sent.

Another purpose of this procedure is to invoke MO/MT CS fallback or 1xCS fallback

procedures

UEStart T3417ASSERVICE REQUESTAS indication aboutbearer establishment for user plane

MMEStop T3417ORStart T3417EXTENDED SERVICE REQUEST

(not for CSFB)AS indication aboutbearer establishment for user plane

Stop T3417ORStart T3417extEXTENDED SERVICE REQUEST

(for CSFB)AS indication about system

changeStop T3417extORStart T3417Stop T3417ORStart T3417extStop T3417ext

EXTENDED SERVICE REQUESTSERVICE REJECTSERVICE REQUESTSERVICE REJECTPaging procedure：

request the establishment of a NAS signalling connection to the UE.

UEPagingASRequest pagingMMEStart T3413SERVICE REQUEST or EXTENDED SERVICE REQUESTStop T3413

Transport of NAS messages procedure：

carry SMS messages in an encapsulated form between the MME and the UE

3. ESM procedures

3.1. ESM流程种类

Two types of ESM procedures can be distinguished:

1) Procedures related to EPS bearer contexts:

These procedures are initiated by the network and are used for the

manipulation of EPS bearer contexts:

-

-

-

-

default EPS bearer context activation;

dedicated EPS bearer context activation;

EPS bearer context modification;

EPS bearer context deactivation.

2) Transaction related procedures:

These procedures are initiated by the UE to request for resources, i.e. a new

PDN connection or dedicated bearer resources, or to release these resources:

-

-

-

-

PDN connectivity procedure;

PDN disconnect procedure;

bearer resource allocation procedure;

bearer resource modification procedure.

When combined with the attach procedure, the PDN connectivity procedure

can trigger the network to execute the following transaction related procedure:

- ESM information request procedure.

A successful transaction related procedure initiated by the UE triggers the network

to execute one of the procedures related to EPS bearer contexts. The UE treats the

start of the procedure related to the EPS bearer context as completion of the

transaction related procedure.

The following ESM procedures can be related to an EPS bearer context or to a

procedure transaction:

-

-

ESM status procedure;

notification procedure.

3.2. Network initiated ESM procedures

Default EPS bearer context activation procedure：

establish a default EPS bearer context between the UE and the EPC.

UEACTIVATE DEFAULT EPS BEARER CONTEXT REQUESTNetworkStart T3485Stop T3485ACTIVATE DEFAULT EPS BEARER CONTEXT ACCEPTORACTIVATE DEFAULT EPS BEARER CONTEXT REJECTStop T3485

Dedicated EPS bearer context activation procedure：

establish an EPS bearer context with specific QoS and TFT between the UE and

the EPC.

UEACTIVATE DEDICATED EPS BEARER CONTEXT REQUESTNetworkStart T3485Stop T3485ACTIVATE DEDICATED EPS BEARER CONTEXT ACCEPTORACTIVATE DEDICATED EPS BEARER CONTEXT REJECTStop T3485

EPS bearer context modification procedure：

modify an EPS bearer context with a specific QoS and TFT.

UEMODIFY EPS BEARER CONTEXT REQUESTNetworkStart T3486Stop T3486MODIFY EPS BEARER CONTEXT ACCEPTORMODIFY EPS BEARER CONTEXT REJECTStop T3486

EPS bearer context deactivation procedure：

deactivate an EPS bearer context or disconnect from a PDN by deactivating all

EPS bearer contexts to the PDN.

UEDEACTIVATE EPS BEARER CONTEXT REQUESTNetworkStart T3495Stop T3495DEACTIVATE EPS BEARER CONTEXT ACCEPT

3.3. UE requested ESM procedures

UE requested PDN connectivity procedure：

for a UE to request the setup of a default EPS bearer to a PDN.

UEStart T3482PDN CONNECTIVITY REQUESTNetworkStop T3482ACTIVATE DEFAULT EPS BEARER CONTEXT REQUESTORStop T3482PDN CONNECTIVITY REJECT

UE requested PDN disconnect procedure：

for a UE to request disconnection from one PDN.

UEStart T3492PDN DISCONNECT REQUESTNetworkStop T3492DEACTIVATE EPS BEARER CONTEXT REQUESTORStop T3492PDN DISCONNECT REJECT

UE requested bearer resource allocation procedure：

for a UE to request an allocation of bearer resources for a traffic flow

aggregate.

UEStart T3480Stop T3480BEARER RESOURCE ALLOCATION REQUESTNetworkACTIVATE DEDICATED EPS BEARER CONTEXT

REQUESTORStop T3480MODIFY EPS BEARER CONTEXT REQUESTORStop T3480

BEARER RESOURCE ALLOCATION REJECT

UE requested bearer resource modification procedure：

for a UE to request a modification or release of bearer resources for a traffic

flow aggregate or modification of a traffic flow aggregate by replacing packet

filters or adding packet filters.

UEStart T3481Stop T3481BEARER RESOURCE MODIFICATION REQUESTNetworkACTIVATE DEDICATED EPS BEARER CONTEXT

REQUESTORStop T3481MODIFY EPS BEARER CONTEXT REQUESTORStop T3481DEACTIVATE EPS BEARER CONTEXT REQUESTORStop T3481BEARER RESOURCE MODIFICATION REJECT

3.4. Miscellaneous procedures：

Exchange of protocol configuration options：

The UE and the PDN GW can exchange protocol configuration options

UEESM INFORMATION REQUESTNetworkStart T3489Stop T3489ESM INFORMATION RESPONSE

Notification procedure：

inform the UE about events which are relevant for the upper layer which is

using an EPS bearer context or has requested a procedure transaction.

UENOTIFICATIONMME

4. EMM消息格式

4.1. Attach accept

Message type: ATTACH ACCEPT

Significance:

Direction:

dual

network to UE

1、 Table 8.2.1.1: ATTACH ACCEPT message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Attach accept message

identity

Message type

9.8

EPS attach result

9.9.3.10

M V 1

EPS attach result M V 1/2

Spare half octet Spare half octet

9.9.2.9

M V 1/2

T3412 value GPRS timer

9.9.3.16

M V 1

TAI list Tracking area identity list

9.9.3.33

M LV 7-97

ESM message container ESM message container

9.9.3.15

M LV-E 5-n

50 GUTI EPS mobile identity

9.9.3.12

O TLV 13

13 Location area identification Location area identification

9.9.2.2

O TV 6

23 MS identity

Mobile identity

9.9.2.3

EMM cause

9.9.3.9

O TLV 7-10

53 EMM cause O TV 2

17 T3402 value GPRS timer

9.9.3.16

O TV 2

59 T3423 value GPRS timer

9.9.3.16

O TV 2

4A Equivalent PLMNs PLMN list

9.9.2.8

O TLV 5-47

34 Emergency number list Emergency number list

9.9.3.37

O TLV 5-50

64 EPS network feature

support

EPS network feature support

9.9.3.12A

Additional update result

9.9.3.0A

O TLV 3

F- Additional update result O TV 1

5E T3412 extended value GPRS timer 3

9.9.3.16B

O TLV 3

4.2. Attach complete

Message type:

Significance:

Direction:

ATTACH COMPLETE

dual

UE to network

Table 8.2.2.1: ATTACH COMPLETE message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Attach complete message Message type

identity 9.8

ESM message container

9.9.3.15

M V 1

ESM message container M LV-E 5-n

4.3. Attach reject

Message type:

Significance:

Direction:

ATTACH REJECT

dual

network to UE

Table 8.2.3.1: ATTACH REJECT message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Attach reject message

identity

Message type

9.8

EMM cause

9.9.3.9

M V 1

EMM cause M V 1

78 ESM message container ESM message container

9.9.3.15

O TLV-E 6-n

5F T3346 value GPRS timer 2

9.9.3.16A

O TLV 3

16 T3402 value GPRS timer 2

9.9.3.16A

O TLV 3

4.4. Attach request

Message type:

Significance:

ATTACH REQUEST

dual

Direction: UE to network

Table 8.2.4.1: ATTACH REQUEST message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Attach request message

identity

Message type

9.8

EPS attach type

9.9.3.11

M V 1

EPS attach type M V 1/2

NAS key set identifier NAS key set identifier

9.9.3.21

M V 1/2

EPS mobile identity EPS mobile identity

9.9.3.12

M LV 5-12

UE network capability UE network capability

9.9.3.34

M LV 3-14

ESM message container ESM message container

9.9.3.15

M LV-E 5-n

19 Old P-TMSI signature P-TMSI signature

9.9.3.26

O TV 4

50 Additional GUTI EPS mobile identity

9.9.3.12

O TLV 13

52 Last visited registered TAI Tracking area identity

9.9.3.32

O TV 6

5C DRX parameter DRX parameter

9.9.3.8

O TV 3

31 MS network capability MS network capability

9.9.3.20

O TLV 4-10

13 Old location area

identification

Location area identification

9.9.2.2

TMSI status

9.9.3.31

O TV 6

9- TMSI status O TV 1

11 Mobile station classmark 2 Mobile station classmark 2

9.9.2.4

O TLV 5

20 Mobile station classmark 3 Mobile station classmark 3

9.9.2.5

O TLV 2-34

40 Supported Codecs Supported Codec List

9.9.2.10

O TLV 5-n

F- Additional update type Additional update type

9.9.3.0B

O TV 1

5D Voice domain preference

and UE's usage setting

Voice domain preference and

UE's usage setting

9.9.3.44

O TLV 3

D- Device properties Device properties

9.9.2.0A

O TV 1

E- Old GUTI type GUTI type

9.9.3.45

O TV 1

C- MS network feature

support

10

MS network feature support

9.9.3.20A

O TV 1

TMSI based NRI container Network resource identifier

container

9.9.3.24A

O TLV 4

4.5. Authentication failure

Message type:

Significance:

Direction:

AUTHENTICATION FAILURE

dual

UE to network

Table 8.2.5.1: AUTHENTICATION FAILURE message content

IEI

Information element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format

M V

Length

1/2

Security header type Security header type

9.3.1

M V 1/2

Authentication failure

message type

Message type

9.8

EMM cause

9.9.3.9

M V 1

EMM cause M V 1

30 Authentication failure

parameter

Authentication failure

parameter

9.9.3.1

O TLV 16

4.6. Authentication reject

Message type:

Significance:

Direction:

AUTHENTICATION REJECT

dual

network to UE

Table 8.2.6.1: AUTHENTICATION REJECT message content

IEI

Information element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format

M V

Length

1/2

Security header type Security header type

9.3.1

M V 1/2

Authentication reject

message type

Message type

9.8

M V 1

4.7. Authentication request

Message type:

Significance:

Direction:

AUTHENTICATION REQUEST

dual

network to UE

Table 8.2.7.1: AUTHENTICATION REQUEST message content

IEI

Information element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format

M V

Length

1/2

Security header type Security header type

9.3.1

M V 1/2

Authentication request

message type

Message type

9.8

M V 1

NAS key set identifierASME NAS key set identifier

9.9.3.21

M V 1/2

Spare half octet Spare half octet

9.9.2.9

M V 1/2

Authentication parameter Authentication parameter

RAND (EPS challenge) RAND

9.9.3.3

M V 16

Authentication parameter Authentication parameter

AUTN (EPS challenge) AUTN

9.9.3.2

M LV 17

4.8. Authentication response

Message type:

Significance:

AUTHENTICATION RESPONSE

dual

Direction: UE to network

Table 8.2.8.1: AUTHENTICATION RESPONSE message content

IEI

Information element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format

M V

Length

1/2

Security header type Security header type

9.3.1

M V 1/2

Authentication response

message type

Message type

9.8

Authentication response

parameter

9.9.3.4

M V 1

Authentication response

parameter

M LV 5-17

4.9. CS service notification

Message type:

Significance:

Direction:

CS SERVICE NOTIFICATION

dual

network to UE

Table 8.2.9.1: CS SERVICE NOTIFICATION message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

CS service notification

message identity

Message type

9.8

Paging identity

9.9.3.25A

M V 1

Paging identity M V 1

60 CLI CLI

9.9.3.38

O TLV 3-14

61 SS Code SS Code

9.9.3.39

O TV 2

62 LCS indicator LCS indicator

9.9.3.40

O TV 2

63 LCS client identity LCS client identity

9.9.3.41

O TLV 3-257

4.10. Detach accept

Message type:

Significance:

DETACH ACCEPT

dual

Direction: network to UE

Table 8.2.10.1.1: DETACH ACCEPT message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Detach accept message

identity

Message type

9.8

M V 1

4.11. Detach request

Message type:

Significance:

Direction:

DETACH REQUEST

dual

UE to network

Table 8.2.11.1.1: DETACH REQUEST message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Detach request message

identity

Message type

9.8

Detach type

9.9.3.7

M V 1

Detach type M V 1/2

NAS key set identifier NAS key set identifier

9.9.3.21

M V 1/2

EPS mobile identity EPS mobile identity

9.9.3.12

M LV 5-12

4.12. Downlink NAS Transport

Message type:

Significance:

Direction:

DOWNLINK NAS TRANSPORT

dual

network to UE

Table 8.2.12.1: DOWNLINK NAS TRANSPORT message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Downlink NAS transport

message identity

Message type

9.8

NAS message container

9.9.3.22

M V 1

NAS message container M LV 3-252

4.13. EMM information

Message type: EMM INFORMATION

Significance:

Direction:

local

network to UE

Table 8.2.13.1: EMM INFORMATION message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

EMM information message Message type

identity 9.8

Network name

9.9.3.24

M V 1

43 Full name for network O TLV 3-n

45 Short name for network Network name

9.9.3.24

O TLV 3-n

46 Local time zone Time zone

9.9.3.29

O TV 2

47 Universal time and local

time zone

Time zone and time

9.9.3.30

Daylight saving time

9.9.3.6

O TV 8

49 Network daylight saving

time

O TLV 3

4.14. EMM status

Message type:

Significance:

EMM STATUS

local

Direction: both

Table 8.2.14.1: EMM STATUS message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

EMM status message

identity

Message type

9.8

EMM cause

9.9.3.9

M V 1

EMM cause M V 1

4.15. Extended service request

Message type:

Significance:

Direction:

EXTENDED SERVICE REQUEST

dual

UE to network

Table 8.2.15.1: EXTENDED SERVICE REQUEST message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Extended service request

message identity

Message type

9.8

Service type

9.9.3.27

M V 1

Service type M V 1/2

NAS key set identifier NAS key set identifier

9.9.3.21

M V 1/2

M-TMSI Mobile identity

9.9.2.3

M LV 6

B- CSFB response CSFB response

9.9.3.5

C TV 1

57 EPS bearer context status EPS bearer context status

9.9.2.1

O TLV 4

D- Device properties Device properties

9.9.2.0A

O TV 1

4.16. GUTI reallocation command

Message type:

Significance:

Direction:

GUTI REALLOCATION COMMAND

dual

network to UE

Table 8.2.16.1: GUTI REALLOCATION COMMAND message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

GUTI reallocation

command message

identity

Message type

9.8

M V 1

GUTI EPS mobile identity

9.9.3.12

M LV 12

54 TAI list Tracking area identity list

9.9.3.33

O TLV 8-98

4.17. GUTI reallocation complete

Message type:

Significance:

Direction:

GUTI REALLOCATION COMPLETE

dual

UE to network

Table 8.2.17.1: GUTI REALLOCATION COMPLETE message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

GUTI reallocation complete Message type

message identity

9.8

M V 1

4.18. Identity request

Message type:

Significance:

Direction:

IDENTITY REQUEST

dual

network to UE

Table 8.2.18.1: IDENTITY REQUEST message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Identity request message

identity

Message type

9.8

Identity type 2

9.9.3.17

M V 1

Identity type M V 1/2

Spare half octet Spare half octet

9.9.2.9

M V 1/2

4.19. Identity response

Message type:

Significance:

Direction:

IDENTITY RESPONSE

dual

UE to network

Table 8.2.19.1: IDENTITY RESPONSE message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Identity response message Message type

9.8

M V 1

Mobile identity Mobile identity

9.9.2.3

M LV 4-10

4.20. Security mode command

Message type:

Significance:

Direction:

SECURITY MODE COMMAND

dual

network to UE

Table 8.2.20.1: SECURITY MODE COMMAND message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Security mode command

message identity

Message type

9.8

NAS security algorithms

9.9.3.23

NAS key set identifier

9.9.3.21

M V 1

Selected NAS security

algorithms

M V 1

NAS key set identifier M V 1/2

Spare half octet Spare half octet

9.9.2.9

M V 1/2

Replayed UE security

capabilities

UE security capability

9.9.3.36

IMEISV request

9.9.3.18

M LV 3-6

C- IMEISV request O TV 1

55 Replayed nonceUE Nonce

9.9.3.25

O TV 5

56 NonceMME Nonce

9.9.3.25

O TV 5

4.21. Security mode complete

Message type:

Significance:

Direction:

SECURITY MODE COMPLETE

dual

UE to network

Table 8.2.21.1: SECURITY MODE COMPLETE message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Security mode complete

message identity

Message type

9.8

Mobile identity

9.9.2.3

M V 1

23 IMEISV O TLV 11

4.22. Security mode reject

Message type: SECURITY MODE REJECT

Significance:

Direction:

dual

UE to network

Table 8.2.22.1: SECURITY MODE REJECT message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Security mode reject

message identity

Message type

9.8

EMM cause

9.9.3.9

M V 1

EMM cause M V 1

4.23. Security protected NAS message

Message type:

Significance:

Direction:

SECURITY PROTECTED NAS MESSAGE

dual

both

Table 8.2.23.1: SECURITY PROTECTED NAS MESSAGE message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Message authentication

code

Message authentication code

9.5

Sequence number

9.6

M V 4

Sequence number M V 1

NAS message NAS message

9.7

M V 1-n

4.24. Service reject

Message type:

Significance:

Direction:

SERVICE REJECT

dual

network to UE

Table 8.2.24.1: SERVICE REJECT message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Service reject message

identity

Message type

9.8

EMM cause

9.9.3.9

M V 1

EMM cause M V 1

5B T3442 value GPRS timer

9.9.3.16

C TV 2

5F T3346 value GPRS timer 2

9.9.3.16A

O TLV 3

4.25. Service request

Message type:

Significance:

Direction:

SERVICE REQUEST

dual

UE to network

Table 8.2.25.1: SERVICE REQUEST message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

KSI and sequence number KSI and sequence number

9.9.3.19

M V 1

Message authentication

code (short)

Short MAC

9.9.3.28

M V 2

4.26. Tracking area update accept

Message type:

Significance:

Direction:

TRACKING AREA UPDATE ACCEPT

dual

network to UE

Table 8.2.26.1: TRACKING AREA UPDATE ACCEPT message content

IEI Information Element Type/Reference Presence FormaLengtt h

1/2 Protocol discriminator Protocol discriminator

9.2

M V

Security header type Security header type

9.3.1

M V 1/2

Tracking area update

accept message

identity

Message type

9.8

M V 1

EPS update result EPS update result

9.9.3.13

M V 1/2

Spare half octet Spare half octet

9.9.2.9

M V 1/2

5A T3412 value GPRS timer

9.9.3.16

O TV 2

50 GUTI EPS mobile identity

9.9.3.12

O TLV 13

54 TAI list Tracking area identity list

9.9.3.33

O TLV 8-98

57 EPS bearer context

status

EPS bearer context status

9.9.2.1

Location area

identification

9.9.2.2

O TLV 4

13 Location area

identification

O TV 6

23 MS identity Mobile identity

9.9.2.3

O TLV 7-10

53 EMM cause EMM cause

9.9.3.9

O TV 2

17 T3402 value GPRS timer

9.9.3.16

O TV 2

59 T3423 value GPRS timer

9.9.3.16

O TV 2

4A Equivalent PLMNs PLMN list

9.9.2.8

O TLV 5-47

34 Emergency number list Emergency number list

9.9.3.37

O TLV 5-50

64 EPS network feature

support

EPS network feature

support

9.9.3.12A

O TLV 3

F- Additional update

result

Additional update result

9.9.3.0A

O TV 1

5E T3412 extended value GPRS timer 3

9.9.3.16B

O TLV 3

4.27. Tracking area update complete

Message type:

Significance:

Direction:

TRACKING AREA UPDATE COMPLETE

dual

UE to network

Table 8.2.27.1: TRACKING AREA UPDATE COMPLETE message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Tracking area update Message type M V 1

complete message identity 9.8

4.28. Tracking area update reject

Message type:

Significance:

Direction:

TRACKING AREA UPDATE REJECT

dual

network to UE

Table 8.2.28.1: TRACKING AREA UPDATE REJECT message content

IEI

Information Element

Protocol discriminator

Type/Reference

Protocol discriminator

9.2

Presence Format Length

M V 1/2

Security header type Security header type

9.3.1

M V 1/2

Tracking area update reject Message type

message identity 9.8

EMM cause

9.9.3.9

M V 1

EMM cause M V 1

5F T3346 value GPRS timer 2

9.9.3.16A

O TLV 3

4.29. Tracking area update request

Message type:

Significance:

Direction:

TRACKING AREA UPDATE REQUEST

dual

UE to network