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TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
LTE;
Mobile radio interface Layer 3 specification;
Core network protocols;
Stage 3
(3GPP TS 24.008 version 15.6.0 Release 15)
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3GPP TS 24.008 version 15.6.0 Release 15 1 ETSI TS 124 008 V15.6.0 (2019-04)
Reference
RTS/TSGC-0124008vf60
Keywords
GSM,LTE,UMTS
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All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.
TM TM
3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
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GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
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3GPP TS 24.008 version 15.6.0 Release 15 2 ETSI TS 124 008 V15.6.0 (2019-04)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
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3GPP TS 24.008 version 15.6.0 Release 15 3 ETSI TS 124 008 V15.6.0 (2019-04)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 28
Introduction . 28
1 Scope . 29
1.1 Scope of the Technical Specification . 29
1.2 Application to the interface structures . 29
1.3 Structure of layer 3 procedures . 29
1.4 Test procedures . 29
1.5 Use of logical channels in A/Gb mode . 30
1.6 Overview of control procedures . 30
1.6.1 List of procedures . 30
1.7 Applicability of implementations . 32
1.7.1 Voice Group Call Service (VGCS) and Voice Broadcast Service (VBS). 32
1.7.2 General Packet Radio Service (GPRS) . 32
1.7.2.1 Packet services in GSM (A/Gb mode only) . 32
1.7.2.2 Packet services in Iu mode (Iu mode only) . 33
1.8 Handling of NAS signalling low priority indication . 33
1.9 Restrictions . 33
2 References . 34
2.1 Definitions and abbreviations . 40
2.1.1 Random values . 41
2.1.2 Vocabulary . 41
3 Radio Resource management procedures . 46
4 Elementary procedures for Mobility Management . 46
4.1 General . 46
4.1.1 MM and GMM procedures . 47
4.1.1.1 Types of MM and GMM procedures . 47
4.1.1.1.1 Integrity Checking of Signalling Messages in the Mobile Station (Iu mode only) . 48
4.1.1.1.1a Integrity protection for emergency call (Iu mode only) . 50
4.1.1.2 MM-GMM co-ordination for GPRS MS's . 51
4.1.1.2.1 GPRS MS operating in mode A or B in a network that operates in mode I . 51
4.1.1.2.2 GPRS MS operating in mode A or B in a network that operates in mode II . 52
4.1.1.2A Coordination between GMM and EMM . 52
4.1.1.3 Core Network System Information for MM (Iu mode only) . 52
4.1.1.4 Core Network System Information for GMM (Iu mode only) . 53
4.1.1.4.1 General . 53
4.1.1.4.2 Control of Network Mode of Operation I . 53
4.1.1.5 Access class control . 53
4.1.1.6 Specific requirements for MS configured to use timer T3245 . 54
4.1.1.6A Specific requirements for the MS when receiving non-integrity protected reject messages . 54
4.1.1.7 Handling of NAS level mobility management congestion control . 60
4.1.1.8 Handling of security related parameters at switch on and switch off . 61
4.1.1.9 Equivalent PLMNs list . 61
4.1.1.10 Dedicated core network . 62
4.1.2 MM sublayer states . 62
4.1.2.1 MM sublayer states in the mobile station . 62
4.1.2.1.1 Main states . 62
4.1.2.1.2 Substates of the MM IDLE state . 65
4.1.2.2 The update Status . 67
4.1.2.3 MM sublayer states on the network side . 67
4.1.3 GPRS mobility management (GMM) sublayer states . 69
4.1.3.1 GMM states in the MS . 69
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3GPP TS 24.008 version 15.6.0 Release 15 4 ETSI TS 124 008 V15.6.0 (2019-04)
4.1.3.1.1 Main states . 69
4.1.3.1.2 Substates of state GMM-DEREGISTERED. 69
4.1.3.1.3 Substates of state GMM-REGISTERED . 70
4.1.3.2 GPRS update status . 72
4.1.3.3 GMM mobility management states on the network side . 72
4.1.3.3.1 Main States . 73
4.1.3.3.2 Substates of state GMM-REGISTERED . 73
4.2 Behaviour of the MS in MM Idle state, GMM-DEREGISTERED state and GMM-REGISTERED state . 74
4.2.1 Primary Service State selection . 74
4.2.1.1 Selection of the Service State after Power On. 74
4.2.1.2 Other Cases . 75
4.2.2 Detailed Description of the MS behaviour in MM IDLE State. . 75
4.2.2.1 Service State, NORMAL SERVICE . 75
4.2.2.2 Service State, ATTEMPTING TO UPDATE . 76
4.2.2.3 Service State, LIMITED SERVICE . 76
4.2.2.4 Service State, NO IMSI . 77
4.2.2.5 Service State, SEARCH FOR PLMN, NORMAL SERVICE . 77
4.2.2.6 Service State, SEARCH FOR PLMN . 78
4.2.2.7 Service State, RECEIVING GROUP CALL (NORMAL SERVICE) . 78
4.2.2.8 Service State, RECEIVING GROUP CALL (LIMITED SERVICE) . 78
4.2.2.9 Service State, eCALL INACTIVE . 79
4.2.3 Service state when back to state MM IDLE from another state . 79
4.2.4 Behaviour in state GMM-DEREGISTERED. 80
4.2.4.1 Primary substate selection . 80
4.2.4.1.1 Selection of the substate after power on or enabling the MS's GPRS capability . 80
4.2.4.1.2 Other Cases . 81
4.2.4.2 Detailed description of the MS behaviour in state GMM-DEREGISTERED . 81
4.2.4.2.1 Substate, NORMAL-SERVICE . 81
4.2.4.2.2 Substate, ATTEMPTING-TO-ATTACH . 81
4.2.4.2.3 Substate, LIMITED-SERVICE . 81
4.2.4.2.4 Substate, NO-IMSI . 82
4.2.4.2.5 Substate, NO-CELL . 82
4.2.4.2.6 Substate, PLMN-SEARCH . 82
4.2.4.2.7 Substate, ATTACH-NEEDED . 82
4.2.4.2.8 Substate, SUSPENDED (A/Gb mode only) . 82
4.2.4.3 Substate when back to state GMM-DEREGISTERED from another GMM state . 82
4.2.5 Behaviour in state GMM-REGISTERED . 82
4.2.5.1 Detailed description of the MS behaviour in state GMM-REGISTERED . 83
4.2.5.1.1 Substate, NORMAL-SERVICE . 83
4.2.5.1.2 Substate, SUSPENDED (A/Gb mode only) . 83
4.2.5.1.3 Substate, UPDATE-NEEDED . 83
4.2.5.1.4 Substate, ATTEMPTING-TO-UPDATE . 83
4.2.5.1.5 Substate, NO-CELL-AVAILABLE . 84
4.2.5.1.6 Substate, LIMITED-SERVICE . 84
4.2.5.1.7 Substate, ATTEMPTING-TO-UPDATE-MM . 84
4.2.5.1.8 Substate, PLMN-SEARCH . 85
4.3 MM common procedures . 85
4.3.1 TMSI reallocation procedure . 85
4.3.1.0 General . 85
4.3.1.1 TMSI reallocation initiation by the network . 86
4.3.1.2 TMSI reallocation completion by the mobile station . 86
4.3.1.3 TMSI reallocation completion in the network. 86
4.3.1.4 Abnormal cases in the mobile station. 86
4.3.1.5 Abnormal cases on the network side . 86
4.3.2 Authentication procedure . 87
4.3.2a Authentication procedure used for a UMTS authentication challenge . 87
4.3.2b Authentication Procedure used for a GSM authentication challenge . 87
4.3.2.1 Authentication request by the network . 87
4.3.2.2 Authentication response by the mobile station . 88
4.3.2.3 Authentication processing in the network . 89
4.3.2.3a 128-bit circuit-switched GSM ciphering key . 89
4.3.2.4 Ciphering key sequence number . 89
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3GPP TS 24.008 version 15.6.0 Release 15 5 ETSI TS 124 008 V15.6.0 (2019-04)
4.3.2.5 Authentication not accepted by the network . 90
4.3.2.5.1 Authentication not accepted by the MS . 91
4.3.2.6 Abnormal cases . 91
4.3.2.6.1 MS behaviour towards a network that has failed the authentication procedure. 94
4.3.2.7 Handling of keys at intersystem change from Iu mode to A/Gb mode . 94
4.3.2.7a Use of established security contexts . 94
4.3.2.8 Handling of keys at intersystem change from A/Gb mode to Iu mode . 95
4.3.2.9 Void. 96
4.3.2.10 Derivation of keys at SRVCC or vSRVCC handover from S1 mode . 96
4.3.2.10.0 General . 96
4.3.2.10.1 PDN connection with integrity protection . 96
4.3.2.10.2 PDN connection without integrity protection . 96
4.3.2.11 Derivation of keys at SRVCC handover from Iu mode to Iu mode . 97
4.3.2.11.1 PDN connection with integrity protection . 97
4.3.2.11.2 PDN connection without integrity protection . 98
4.3.2.12 Derivation of keys at SRVCC handover from Iu mode to A/Gb mode . 98
4.3.2.12.1 PDN connection with integrity protection . 98
4.3.2.12.2 PDN connection without integrity protection . 99
4.3.2.13 Derivation of keys at CS to PS SRVCC handover from A/Gb mode to Iu mode . 99
4.3.3 Identification procedure . 101
4.3.3.0 General . 101
4.3.3.1 Identity request by the network . 101
4.3.3.2 Identification response by the mobile station . 101
4.3.3.3 Abnormal cases in the mobile station. 101
4.3.3.4 Abnormal cases on the network side . 101
4.3.4 IMSI detach procedure . 102
4.3.4.0 General . 102
4.3.4.1 IMSI detach initiation by the mobile station . 102
4.3.4.2 IMSI detach procedure in the network . 103
4.3.4.3 IMSI detach completion by the mobile station. 103
4.3.4.4 Abnormal cases . 103
4.3.5 Abort procedure . 103
4.3.5.1 Abort procedure initiation by the network . 103
4.3.5.2 Abort procedure in the mobile station . 103
4.3.6 MM information procedure. 104
4.3.6.1 MM information procedure initiation by the network . 104
4.3.6.2 MM information procedure in the mobile station . 104
4.4 MM specific procedures . 104
4.4.1 Location updating procedure . 104
4.4.2 Periodic updating . 106
4.4.3 IMSI attach procedure . 107
4.4.4 Generic Location Updating procedure . 108
4.4.4.1 Location updating initiation by the mobile station . 108
4.4.4.1a Network Request for Additional mobile station Capability Information . 108
4.4.4.2 Identification request from the network . 108
4.4.4.3 Authentication by the network . 108
4.4.4.4 Security mode setting by the network . 108
4.4.4.5 Location Update Attempt Counter . 108
4.4.4.6 Location updating accepted by the network . 109
4.4.4.7 Location updating not accepted by the network . 111
4.4.4.8 Release of RR connection after location updating . 113
4.4.4.9 Abnormal cases on the mobile station side . 113
4.4.4.10 Abnormal cases on the network side .
...