ETSI
3GPP TS 23.272 version 8.3.0 Release 8
Contents
Intellectual Property Rights................................................................................................................................2
Foreword.............................................................................................................................................................2
Foreword.............................................................................................................................................................5
1 Scope........................................................................................................................................................6
2 References................................................................................................................................................6
3 Definitions and abbreviations...................................................................................................................7
3.1 Definitions..........................................................................................................................................................7
3.2 Abbreviations .....................................................................................................................................................7
4 Overall Description..................................................................................................................................7
4.1 General Considerations ......................................................................................................................................7
4.2 Reference Architecture.......................................................................................................................................7
4.2.1 Reference points ...........................................................................................................................................8
4.3 Functional entities ..............................................................................................................................................8
4.3.1 UE.................................................................................................................................................................8
4.3.2 MME.............................................................................................................................................................8
4.3.3 MSC..............................................................................................................................................................9
4.3.4 E-UTRAN.....................................................................................................................................................9
4.3.5 SGSN............................................................................................................................................................9
4.4 Control plane......................................................................................................................................................9
4.4.1 MME - MSC Server......................................................................................................................................9
4.5 Co-existence with IMS services.......................................................................................................................10
4.6 Emergency Calls ..............................................................................................................................................10
5 Mobility Management............................................................................................................................10
5.1 General.............................................................................................................................................................10
5.2 Attach procedure ..............................................................................................................................................10
5.3 Detach procedure..............................................................................................................................................11
5.3.1 UE-initiated Detach procedure ...................................................................................................................11
5.3.2 MME-initiated Detach procedure ...............................................................................................................12
5.3.3 HSS-initiated Detach procedure .................................................................................................................13
5.3.4 Administration of the MME - MSC/VLR Association...............................................................................13
5.4 TA/LA Update procedure.................................................................................................................................14
5.4.1 Combined TA/LA Update Procedure .........................................................................................................14
5.4.2 Periodic TA and LA Update Procedure......................................................................................................14
5.4.3 Non-EPS Alert procedure...........................................................................................................................15
6 Mobile Originating Call .........................................................................................................................15
6.1 General.............................................................................................................................................................15
6.2 Mobile Originating call in Active Mode - PS HO supported ...........................................................................16
6.3 Mobile Originating call in Active Mode – No PS HO support in GERAN......................................................18
6.4 Mobile Originating call in Idle Mode...............................................................................................................19
6.5 Returning back to E-UTRAN...........................................................................................................................19
7 Mobile Terminating Call........................................................................................................................20
7.1 General.............................................................................................................................................................20
7.2 Mobile Terminating call in idle mode..............................................................................................................20
7.3 Mobile Terminating call in Active Mode - PS HO supported..........................................................................23
7.4 Mobile Terminating call in Active Mode - No PS HO support in GERAN.....................................................25
7.5 Roaming Retry for CS fallback........................................................................................................................27
7.6 Returning back to E-UTRAN...........................................................................................................................28
7.7 Interaction with ISR .........................................................................................................................................28
7.7.1 General........................................................................................................................................................28
7.7.2 Mobile Terminating Call when ISR is active and SGs is active between MSC/VLR and MME ...............29
7.7.3 Mobile Terminating Call when SGs is not active .......................................................................................30