ETSI TS 143 129 V13.0.0 (2016-01)

ETSI TS 1143 129 V13.0.0 (201616-01)






TECHNICAL SPECIFICATIONION
Digital cellular telecocommunications system (Phahase 2+);
Packet-switched h handover for GERAN A/Gb modem ;
Stage 2
(3GPP TS 43.1.129 version 13.0.0 Release 13 13)

R
GLOBAL SYSTTEME FOR
MOBILE COMMUUNNICATIONS

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3GPP TS 43.129 version 13.0.0 Release 13 1 ETSI TS 143 129 V13.0.0 (2016-01)



Reference
RTS/TSGG-0143129vd00
Keywords
GSM
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3GPP TS 43.129 version 13.0.0 Release 13 2 ETSI TS 143 129 V13.0.0 (2016-01)
Intellectual Property Rights
IPRs essential or potentially essential to the present document 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.
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
http://webapp.etsi.org/key/queryform.asp.
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 43.129 version 13.0.0 Release 13 3 ETSI TS 143 129 V13.0.0 (2016-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 7
Introduction . 7
1 Scope . 8
2 References . 8
3 Definitions and abbreviations . 9
3.1 Definitions . 9
3.2 Void . 10
3.3 Abbreviations . 10
4 Architecture and principles . 12
4.1 Reference architecture . 12
4.2 Handover principles . 12
4.2.1 General . 12
4.2.2 PS Handover preparation phase . 13
4.2.3 PS Handover execution phase . 14
4.2.4 PS Handover Network Node Responsibilities . 14
4.3 Protocol architecture. 14
4.3.1 User plane overview . 14
4.3.2 Control plane overview . 14
4.3.3 Physical Layer . 15
4.3.3.1 Shared Channels . 15
4.3.3.1.1 General . 15
4.3.4 RLC/MAC . 15
4.3.5 Radio Resource (RR) . 16
4.3.6 BSSGP . 16
4.3.7 Overview of PS Handover Signalling Messages . 16
4.3.7.1 PS handover signalling messages on the Um interface . 16
4.3.7.2 PS handover signalling messages on the Gb interface . 16
4.3.7.3 PS handover signalling messages on the Gn interface . 17
4.3.7.4 PS handover signalling messages on the Up interface . 18
4.4 Identifiers . 18
4.4.1 NSAPI, PFI, RAB ID relation during inter-RAT, inter-mode UTRAN/GERAN Iu PS handover . 19
4.4.2 NSAPI, PFI, EPS Bearer ID relation during inter-RAT GERAN / E-UTRAN PS handover . 20
5 Signalling procedures . 20
5.1 GERAN (A/Gb mode) GERAN (A/Gb mode) handover . 20
5.1.1 Intra Cell . 20
5.1.2 Intra BSS . 21
5.1.2.1 General . 21
5.1.2.2 Intra BSS HO; Preparation phase . 21
5.1.2.3 Intra BSS HO; Execution phase . 22
5.1.2.4 Intra BSS Handover - Optimised . 23
5.1.3 Intra SGSN. 25
5.1.3.1 Intra SGSN/Inter BSS HO, Preparation phase . 25
5.1.3.2 Intra SGSN/Inter BSS HO, Execution phase . 26
5.1.4 Inter SGSN. 28
5.1.4.1 Inter SGSN HO, Preparation phase . 28
5.1.4.2 Inter SGSN HO, Execution phase . 31
5.2 Inter-RAT/mode handover (GERAN A/Gb mode UTRAN/ GERAN Iu mode) . 35
5.2.1 Intra SGSN. 35
ETSI

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3GPP TS 43.129 version 13.0.0 Release 13 4 ETSI TS 143 129 V13.0.0 (2016-01)
5.2.1.1 Intra-SGSN GERAN A/Gb mode to UTRAN/GERAN Iu mode HO; Preparation phase . 35
5.2.1.2 Intra-SGSN GERAN A/Gb mode to UTRAN/GERAN Iu mode HO; Execution phase . 37
5.2.2 Inter SGSN. 40
5.2.2.1 Inter-SGSN GERAN A/Gb mode to UTRAN/GERAN Iu mode HO; Preparation phase . 40
5.2.2.2 Inter-SGSN GERAN A/Gb mode to UTRAN/GERAN Iu mode HO; Execution phase . 42
5.3 Inter-RAT/mode Handover (UTRAN/GERAN Iu mode GERAN A/Gb mode). 46
5.3.1 Intra SGSN. 46
5.3.1.1 Inter RAT/mode UTRAN/GERAN Iu mode to GERAN A/Gb mode PS HO; Preparation phase . 46
5.3.1.2 Inter RAT/mode UTRAN/GERAN Iu mode to GERAN A/Gb mode PS HO; Execution phase . 48
5.3.2 Inter SGSN. 51
5.3.2.1 Inter RAT/mode UTRAN/GERAN Iu mode to GERAN A/Gb mode PS HO; Preparation phase . 51
5.3.2.2 Inter RAT UTRAN/GERAN Iu mode to GERAN A/Gb mode PS HO; Execution phase . 53
5.3a Inter-RAT Handover (GERAN A/Gb mode to E-UTRAN) . 56
5.3a.1 General . 56
5.3a.2 Preparation phase . 56
5.3a.3 Execution phase . 57
5.3b Inter-RAT Handover (E-UTRAN to GERAN A/Gb mode) . 57
5.3b.1 General . 57
5.3b.2 Preparation phase . 57
5.3b.3 Execution phase . 57
5.4 Handover reject . 58
5.4.1 General . 58
5.4.2 Inter-SGSN HO Reject; Signalling procedure . 58
5.5 Handover cancel . 58
5.5.1 General . 58
5.5.2 Signalling procedures . 59
5.5.2.1 Inter-SGSN case, GERAN A/Gb mode GERAN A/Gb mode . 59
5.5.2.2 Inter-SGSN case, GERAN A/Gb mode UTRAN/GERAN Iu mode . 60
5.5.2.3 Inter-SGSN case, UTRAN/GERAN Iu mode GERAN A/Gb mode . 61
5.5.2.4 Inter-SGSN, GERAN A/Gb mode E-UTRAN . 61
5.5.2.5 Inter-SGSN case, E - UTRAN GERAN A/Gb mode . 61
5.6 Container handling . 61
5.6.1 Contents of the containers . 63
5.6.1.1 Contents of the GERAN A/Gb mode or GAN mode → GERAN A/Gb mode Transparent
Containers . 64
5.6.1.1.1 Source BSS to Target BSS Transparent Container . 64
5.6.1.1.2 Target BSS to Source BSS Transparent Container . 64
5.6.1.2 Contents of the GERAN A/Gb mode or GAN mode → UTRAN Transparent Containers. 64
5.6.1.2.1 Source to Target Transparent Container . 64
5.6.1.2.2 Target to Source Transparent Container . 65
5.6.1.3 Contents of the UTRAN → GERAN A/Gb Mode or GAN mode Transparent Containers . 65
5.6.1.3.1 Source BSS to Target BSS Transparent Container . 65
5.6.1.3.2 Target BSS to Source BSS Transparent Container . 65
5.6.1.4 Contents of the GERAN A/Gb mode → GERAN Iu mode Transparent Containers . 66
5.6.1.4.1 Source to Target Transparent Container . 66
5.6.1.4.2 Target to Source Transparent Container . 66
5.6.1.5 Content of GERAN Iu mode → GERAN A/Gb mode Transparent Containers . 66
5.6.1.5.1 Source BSS to Target BSS Transparent Container . 66
5.6.1.5.2 Target BSS to Source BSS Transparent Container . 66
5.6.1.6 Contents of the GERAN A/Gb mode → GAN mode Transparent Containers . 67
5.6.1.6.1 Source BSS to Target BSS Transparent Container . 67
5.6.1.6.2 Target BSS to Source BSS Transparent Container . 67
5.6.1.7 Contents of the GERAN A/Gb mode → E-UTRAN Transparent Containers . 67
5.6.1.7.1 Source to Target Transparent Container . 67
5.6.1.7.2 Target to Source Transparent Container . 67
5.6.1.8 Contents of the E-UTRAN → GERAN A/Gb mode Transparent Containers . 68
5.6.1.8.1 Source BSS to Target BSS Transparent Container . 68
5.6.1.8.2 Target BSS to Source BSS Transparent Container . 68
5.7 PS Handover Failure . 68
5.7.1 Preparations Phase Failure Scenarios . 69
5.7.1.1 PS Handover preparation phase failure scenarios on the Um interface . 69
5.7.1.2 PS Handover preparation phase failure scenarios on the Gb interface . 69
ETSI

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3GPP TS 43.129 version 13.0.0 Release 13 5 ETSI TS 143 129 V13.0.0 (2016-01)
5.7.1.3 PS Handover preparation phase failure scenarios on the Gn interface . 69
5.7.1.4 PS Handover preparation phase failure scenarios on the Up interface . 69
5.7.2 Execution Phase Failure Scenarios . 70
5.7.2.1 Execution phase failures on the Um interface . 70
5.7.2.1.1 Initial Access Failure in the Target Cell during PS handover. 70
5.7.2.1.2 Radio contact with the MS is lost: . 71
5.7.2.2 Execution phase failures on the Gb interface . 73
5.7.2.3 Execution phase failures on the Gn interface . 74
5.8 GAN Handover . 74
5.8.1 Intra-SGSN Handover (GERAN A/Gb mode GAN mode handover) . 74
5.8.1.1 Intra SGSN PS Handover, Preparation phase . 74
5.8.1.2 Intra SGSN PS Handover, Execution phase . 75
5.8.2 Intra-SGSN Handover (GAN mode GERAN A/Gb mode handover). 75
5.8.2.1 Intra SGSN PS Handover, Preparation phase . 75
5.8.2.2 Intra SGSN PS Handover, Execution phase . 76
5.8.3 Inter-SGSN Handover (GERAN A/Gb mode GAN mode handover) . 76
5.8.3.1 Inter SGSN PS Handover, Preparation phase . 76
5.8.3.2 Inter SGSN PS Handover, Execution phase . 76
5.8.4 Inter-SGSN Handover (GAN mode GERAN A/Gb mode handover). 76
5.8.4.1 Inter SGSN PS Handover, Preparation phase . 76
5.8.4.2 Inter SGSN, Execution phase . 77
5.8.5 Inter RAT Handover; Intra SGSN (UTRAN GAN mode handover) . 77
5.8.5.1 Intra SGSN PS Handover, Preparation phase . 77
5.8.5.2 Intra SGSN PS Handover, Execution phase . 78
5.8.6 Inter RAT Handover; Intra SGSN (GAN mode UTRAN handover) . 78
5.8.6.1 Intra SGSN PS Handover, Preparation phase . 78
5.8.6.2 Intra SGSN, Execution phase . 78
5.8.7 Inter RAT Handover; Inter SGSN (UTRAN GAN mode handover) . 79
5.8.7.1 Inter SGSN PS Handover, Preparation phase . 79
5.8.7.2 Inter SGSN PS Handover, Execution phase . 79
5.8.8 Inter RAT Handover; Inter SGSN (GAN mode UTRAN handover) . 79
5.8.8.1 Inter SGSN PS Handover, Preparation phase . 79
5.8.8.2 Inter SGSN PS Handover, Execution phase . 79
6 Radio interface Signalling . 79
6.1 PS Handover Signalling (Um) . 79
6.1.1 General . 79
6.1.2 Overview of PS Handover messages . 80
6.1.2.1 GERAN A/Gb mode/GAN mode to GERAN A/Gb mode PS Handover . 80
6.1.2.2 UTRAN/GERAN Iu mode to GERAN A/Gb mode/GAN mode PS Handover . 80
6.1.2.3 GERAN A/Gb mode to GERAN Iu mode PS Handover . 81
6.1.2.4 GERAN A/Gb mode/GAN mode to UTRAN mode PS Handover . 82
6.1.2.5 GERAN A/Gb mode to GAN mode PS Handover . 82
6.1.2.6 GERAN A/Gb mode to E-UTRAN PS Handover . 82
6.1.2.7 E-UTRAN to GERAN A/Gb mode PS Handover . 83
6.1.3 RLC/MAC segmentation . 83
6.1.4 Inter RAT/mode PS Handover to GERAN A/Gb . 83
6.1.5 Inter RAT/mode PS Handover from GERAN A/Gb . 83
6.2 Mechanisms for Initial Access in the Target Cell . 83
6.2.1 General . 83
6.2.2 Synchronisation of handovers . 84
6.2.3 Option 1 - Downlink Data sent after performing access in the target cell . 84
6.2.3.1 Unsynchronised Networks Call Flow. 84
6.2.3.2 Synchronised Networks Call Flow . 85
6.2.4 Option 2 - Downlink Data sent before performing access in the target cell (Blind Transmission) . 85
6.2.4.1 Unsynchronised Networks Call Flow. 86
6.2.4.2 Synchronised Network Call Flow . 86
6.3 Methods for triggering PS Handover. 87
Annex A (normative): Agreed handover principles . 88
A.1 Agreed handover principles . 88
ETSI

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3GPP TS 43.129 version 13.0.0 Release 13 6 ETSI TS 143 129 V13.0.0 (2016-01)
Annex B (informative): PS Handover Primitives . 90
B.1 Overview . 90
B.2 Primitives in Source BSS .
...