ETSI TS 123 401 V11.11.0 (2015-01)

LTE; General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access (3GPP TS 23.401 version 11.11.0 Release 11)

RTS/TSGS-0223401vbb0

General Information

• Status: Published
• Publication Date: 11-Jan-2015
• Technical Committee: 3GPP SA 2 - Architecture
• Current Stage: 12 - Completion
• Due Date: 31-Dec-2014
• Completion Date: 12-Jan-2015

Standards Content (Sample)

TECHNICAL SPECIFICATION
LTE;
General Packet Radio Service (GPRS)
enhancements for Evolved Universal Terrestrial
Radio Access Network (E-UTRAN) access
(3GPP TS 23.401 version 11.11.0 Release 11)

3GPP TS 23.401 version 11.11.0 Release 11 1 ETSI TS 123 401 V11.11.0 (2015-01)

Reference
RTS/TSGS-0223401vbb0
Keywords
LTE
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ETSI
3GPP TS 23.401 version 11.11.0 Release 11 2 ETSI TS 123 401 V11.11.0 (2015-01)
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IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
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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
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The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
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Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "may not", "need", "need not", "will",
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for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
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3GPP TS 23.401 version 11.11.0 Release 11 3 ETSI TS 123 401 V11.11.0 (2015-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 10
1 Scope . 11
2 References . 11
3 Definitions and abbreviations . 14
3.1 Definitions . 14
3.2 Abbreviations . 14
4 Architecture model and concepts . 16
4.1 General concepts . 16
4.2 Architecture reference model . 16
4.2.1 Non-roaming architecture . 16
4.2.2 Roaming architecture . 17
4.2.3 Reference points . 19
4.2.4 Warning System architecture . 20
4.3 High level functions . 20
4.3.1 General . 20
4.3.2 Network access control functions . 21
4.3.2.1 General . 21
4.3.2.2 Network/Access network selection . 21
4.3.2.3 Authentication and authorisation function . 21
4.3.2.4 Admission control function . 21
4.3.2.5 Policy and Charging Enforcement Function . 21
4.3.2.6 Lawful Interception . 21
4.3.3 Packet routing and transfer functions. 21
4.3.3.1 General . 21
4.3.3.2 IP header compression function . 21
4.3.3.3 Packet screening function . 21
4.3.3.4 IP Multicast Forwarding between a network accessed by LIPA and a UE . 22
4.3.4 Security functions . 22
4.3.5 Mobility management functions . 22
4.3.5.1 General . 22
4.3.5.2 Reachability Management for UE in ECM-IDLE state. 22
4.3.5.3 Tracking Area list management . 23
4.3.5.4 Inter-eNodeB mobility anchor function . 23
4.3.5.5 Inter-3GPP mobility anchor function . 23
4.3.5.6 Idle mode signalling reduction function . 23
4.3.5.7 Mobility Restrictions . 25
4.3.5.8 IMS voice over PS Session Supported Indication . 25
4.3.5.8A Homogenous Support of IMS Voice over PS Sessions Indication . 26
4.3.5.9 Voice domain preference and UE's usage setting. 26
4.3.6 Radio Resource Management functions . 26
4.3.7 Network management functions . 27
4.3.7.1 General . 27
4.3.7.2 Load balancing between MMEs . 27
4.3.7.3 Load re-balancing between MMEs . 28
4.3.7.4 MME control of overload . 28
4.3.7.4.1 General . 28
4.3.7.4.1a Throttling of Downlink Data Notification Requests . 30
4.3.7.4.2 NAS level congestion control . 30
4.3.7.5 PDN GW control of overload. 33
4.3.8 Selection functions . 33
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4.3.8.1 PDN GW selection function (3GPP accesses) . 33
4.3.8.2 Serving GW selection function . 35
4.3.8.3 MME selection function . 36
4.3.8.4 SGSN selection function . 36
4.3.8.5 Selection of PCRF . 36
4.3.9 IP network related functions . 36
4.3.9.1 Domain Name Service function . 36
4.3.9.2 DHCP function . 36
4.3.9.3 Explicit Congestion Notification . 36
4.3.10 Functionality for Connection of eNodeBs to Multiple MMEs. 36
4.3.11 E-UTRAN Sharing Function . 37
4.3.12 IMS Emergency Session Support . 37
4.3.12.1 Introduction . 37
4.3.12.2 Architecture Reference Model for Emergency Services . 38
4.3.12.3 Mobility and Access Restrictions for Emergency Services . 39
4.3.12.3a Reachability Management for UE in ECM-IDLE state. 39
4.3.12.4 PDN GW selection function (3GPP accesses) for Emergency Services . 39
4.3.12.5 QoS for Emergency Services . 39
4.3.12.6 PCC for Emergency Services . 40
4.3.12.7 Load re-balancing between MMEs for Emergency Services . 40
4.3.12.8 IP Address Allocation . 40
4.3.12.9 Handling of PDN Connections for Emergency Bearer Services . 40
4.3.12.10 ISR function for Emergency Bearer Services . 40
4.3.13 Closed Subscriber Group functions . 40
4.3.14 Location Service functions . 41
4.3.15 Selected IP Traffic Offload (SIPTO) function . 41
4.3.16 Local IP Access (LIPA) function . 42
4.3.17 Support for Machine Type Communications (MTC) . 43
4.3.17.1 General . 43
4.3.17.2 Overview of protection from Potential MTC Related Overload . 43
4.3.17.3 Optimizing periodic TAU Signalling . 45
4.3.17.4 UE configuration and usage of indicators . 45
4.3.17.5 Void. 47
4.3.17.6 Support of UEs configured for low access priority, Extended Access Barring and permission for
override . 47
4.3.18 Multimedia Priority Service . 47
4.3.18.1 General . 47
4.3.18.2 IMS-based Multimedia Priority Services . 48
4.3.18.2.1 Originating IMS-based MPS Session . 48
4.3.18.2.2 Terminating IMS-based MPS Session . 48
4.3.18.3 Priority EPS Bearer Services. 48
4.3.18.4 CS fallback . 49
4.3.18.5 Network Congestion Controls for MPS . 49
4.3.18.6 Load Re-balancing between MMEs for MPS . 49
4.3.19 Core Network node resolution . 49
4.3.19.1 General . 49
4.3.19.2 MSB in LAC and MME Group ID . 49
4.3.19.3 Explicit Indication . 49
4.3.20 Relaying function . 50
4.3.20.1 General . 50
4.3.20.2 RN startup and attach procedure . 50
4.3.20.2.1 General . 50
4.3.20.2.2 Attach for RN preconfiguration . 51
4.3.20.2.3 Attach for RN operation . 51
4.3.20.3 DeNB E-RAB activation/modification . 52
4.4 Network elements . 53
4.4.1 E-UTRAN . 53
4.4.2 MME . 53
4.4.3 Gateway . 54
4.4.3.1 General . 54
4.4.3.2 Serving GW. 54
4.4.3.3 PDN GW . 54
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4.4.4 SGSN . 55
4.4.5 GERAN . 55
4.4.6 UTRAN . 56
4.4.7 PCRF . 56
4.4.7.1 General . 56
4.4.7.2 Home PCRF (H-PCRF). 56
4.4.7.3 Visited PCRF (V-PCRF) . 56
4.4.8 PDN GW's associated AAA Server . 56
4.4.9 HeNB subsystem . 56
4.4.10 DeNB . 57
4.4.11 CSG Subscriber Server . 58
4.5 Void . 58
4.6 EPS Mobility Management and Connection Management states . 58
4.6.1 General . 58
4.6.2 Definition of main EPS Mobility Management states . 59
4.6.2.1 EMM-DEREGISTERED . 59
4.6.2.2 EMM-REGISTERED . 59
4.6.3 Definition of EPS Connection Management states . 59
4.6.3.1 ECM-IDLE. 59
4.6.3.2 ECM-CONNECTED. 60
4.6.4 State transition and functions . 61
4.7 Overall QoS concept . 62
4.7.1 PDN connectivity service . 62
4.7.2 The EPS bearer . 62
4.7.2.1 The EPS bearer in general . 62
4.7.2.2 The EPS bearer with GTP-based S5/S8 . 64
4.7.2.3 The EPS bearer with PMIP-based S5/S8 . 65
4.7.3 Bearer level QoS parameters . 65
4.7.4 Support for Application / Service Layer Rate Adaptation . 67
4.7.5 Application of PCC in the Evolved Packet System . 67
4.7.6 Bearer Control Mode in EPC . 68
4.8 Compatibility Issues . 68
4.8.1 Network Configuration for Interaction with UTRAN/GERAN . 68
5 Functional description and information flows . 68
5.1 Control and user planes . 68
5.1.0 General . 68
5.1.1 Control Plane . 69
5.1.1.1 General . 69
5.1.1.2 eNodeB - MME . 69
5.1.1.3 UE - MME . 70
5.1.1.4 SGSN - MME. 70
5.1.1.5 SGSN - S-GW . 71
5.1.1.6 S-GW - P-GW . 71
5.1.1.7 MME - MME . 72
5.1.1.8 MME - S-GW . 72
5.1.1.9 MME - HSS . 73
5.1.1.10 MME - EIR . 73
5.1.1.11 Void. 73
5.1.1.12 MME - CSS . 74
5.1.2 User Plane . 74
5.1.2.1 UE - P-GW user plane with E-UTRAN . 74
5.1.2.2 eNodeB - S-GW . 75
5.1.2.3 UE - PDN GW user plane with 2G access via the S4 interface . 75
5.1.2.4 UE - PDN GW user plane with 3G access via the S12 interface . 76
5.1.2.5 UE - PDN GW user plane with 3G access via the S4 interface . 77
5.2 Identities . 77
5.2.1 EPS bearer identity . 77
5.2.2 Globally Unique Temporary UE Identity . 77
5.2.3 Tracking Area Identity (TAI). 78
5.2.4 eNodeB S1-AP UE Identity (eNodeB S1-AP UE ID) . 78
5.2.5 MME S1-AP UE Identity (MME S1-AP UE ID) . 78
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5.2.6 Closed Subscriber Group ID . 78
5.3 Authentication, security and location management . 78
5.3.1 IP address allocation . 78
5.3.1.1 General . 78
5.3.1.2 IP address allocation, renewal and release mechanisms for GTP based S5/S8 . 81
5.3.1.2.1 IPv4 address allocation via default bearer activation and release via PDN connection release. 81
5.3.1.2.2 Allocation, renewal and release of the IPv6 default prefix via IPv6 stateless address
autoconfiguration . 81
5.3.1.2.3 IPv6 parameter configuration via stateless DHCPv6. 82
5.3.1.2.4 IPv4 address allocation, renewal and release and IPv4 parameter configuration via DHCPv4 . 82
5.3.1.2.5 Void . 82
5.3.1.2.6 IPv6 Prefix Delegation via DHCPv6 . 83
5.3.2 Attach procedure . 83
5.3.2.1 E-UTRAN Initial Attach . 83
5.3.2.2 UTRAN/GERAN Initial Attach . 94
5.3.3 Tracking Area Update procedures . 94
5.3.3.0 Triggers for tracking area update . 94
5.3.3.0A Provision of UE's TAI to MME in ECM-CONNECTED state . 95
5.3.3.1 Tracking Area Update procedure with Serving GW change . 96
5.3.3.2 E-UTRAN Tracking Area Update without S-GW Change . 102
5.3.3.3 Routing Area Update with MME interaction and without S-GW change . 109
5.3.3.4 Void. 115
5.3.3.5 Void. 115
5.3.3.6 Routing Area Update with MME interaction and with S-GW change . 115
5.3.4 Service Request procedures . 121
5.3.4.1 UE triggered Service Request . 121
5.3.4.2 Handling of abnormal conditions in UE triggered Service Request . 123
5.3.4.3 Network Triggered Service Request . 124
5.3.5 S1 release procedure . 127
5.3.6 Void . 128
5.3.7 GUTI Reallocation procedure . 128
5.3.8 Detach procedure . 129
5.3.8.1 General . 129
5.3.8.2 UE-initiated Detach procedure . 129
5.3.8.2.1 UE-initiated Detach procedure for E-UTRAN . 129
5.3.8.2.2 UE-initiated Detach procedure for GERAN/UTRAN with ISR activated . 131
5.3.8.3 MME-initiated Detach procedure . 132
5.3.8.3A SGSN-initiated Detach procedure with ISR activated . 134
5.3.8.4 HSS-initiated Detach procedure . 136
5.3.9 HSS User Profile management function procedure . 138
5.3.9.1 General . 138
5.3.9.2 Insert Subscriber Data procedure . 138
5.3.9.3 Purge function . 139
5.3.10 Security Function . 139
5.3.10.1 General . 139
5.3.10.2 Authentication and Key Agreement . 140
5.3.10.3 User Identity Confidentiality . 140
5.3.10.4 User Data and Signalling Confidentiality . 140
5.3.10.4.1 AS security mode command procedure . 140
5.3.10.4.2 NAS Security Mode Command procedure . 140
5.3.10.5 ME identity check procedure . 141
5.3.11 UE Reachability procedures . 141
5.3.11.1 General . 141
5.3.11.2 UE Reachability Notification Request procedure . 141
5.3.11.3 UE Activity Notification procedure . 142
5.3.12 Update CSG Location Procedure . 142
5.3.13 CSS subscription data management function procedure . 143
5.3.13.1 General . 143
5.3.13.2 Insert CSG Subscriber Data procedure . 143
5.3.14 UE Radio Capability Match Request . 143
5.4 Session Management, QoS and interaction with PCC functionality . 145
5.4.1 Dedicated bearer activation. 145
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5.4.2 Bearer modification with bearer QoS update . 147
5.4.2.1 PDN GW initiated bearer modification with bearer QoS update . 147
5.4.2.2 HSS Initiated Subscribed QoS Modification . 149
5.4.3 PDN GW initiated bearer modification without bearer QoS update . 150
5.4.4 Bearer deactivation . 152
5.4.4.1 PDN GW initiated bearer deactivation . 152
5.4.4.2 MME Initiated Dedicated Bearer Deactivation . 155
5.4.5 UE requested bearer resource modification . 156
5.4.6 Void . 158
5.5 Handover . 158
5.5.1 Intra-E-UTRAN handover . 159
5.5.1.1 X2-based handover. 159
5.5.1.1.1 General . 159
5.5.1.1.2 X2-based handover without Serving GW relocation . 159
5.5.1.1.3 X2-based handover with Serving GW relocation . 162
5.5.1.2 S1-based handover . 164
5.5.1.2.1 General . 164
5.5.1.2.2 S1-based handover, normal . 165
5.5.1.2.3 S1-based handover, Reject . 170
5.5.1.2.4 S1-based handover, Cancel . 171
5.5.2 Inter RAT handover . 171
5.5.2.0 General . 171
5.5.2.1 E-UTRAN to UTRAN Iu mode Inter RAT handover . 172
5.5.2.1.1 General .
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