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TR 23.829  SA2 ★
Local IP Access
and Selected IP Traffic Offload
(LIPA-SIPTO)

3GPP‑Page   full‑ToC
use "3GPP‑Page" to get the Word version
for a better overview, the Table of Contents (ToC) is reproduced
V10.0.1 (Wzip)  2011/10  43 p.
Rapporteur:  Mr. Hédé, Patrice 
Support of Local IP access for the Home (e)NodeB Subsystem and of Selected IP traffic offload for the Home (e)NodeB Subsystem and for the macro layer network is required in TS 22.220 and TS 22.101. This TR describes the following functionalities:
  • Local IP access – LIPA – to residential/corporate local network for Home (e)NodeB Subsystem;
  • Selected IP traffic offload – SIPTO – (e.g. Internet traffic) for Home (e)NodeB Subsystem;
  • Selected IP traffic offload (e.g. Internet traffic, corporate traffic) for the macro network (3G and LTE only).

full Table of Contents for  TR 23.829  Word version:   10.0.1

Here   Top
1  Scope  Word-p. 6
2  References
3  Definitions, symbols and abbreviations
3.1  Definitions
3.2  Abbreviations  Word-p. 7
4  Examples for Styles
4.1  Scenarios
4.1.1  LIPA scenarios
4.1.2  SIPTO scenarios
4.2  Key issues  Word-p. 8
4.2.1  Legal interception  Up
4.2.2  QoS
4.2.3  Single/multiple PDN support
4.2.4  Deployed behind NAT
4.2.5  Operator control for SIPTO
4.3  Architectural requirements  Word-p. 9
5  Architecture solutions
5.1  Architectural principles
5.2  Solution 1 - Local IP Access and Selected IP Traffic Offload solution based on traffic breakout performed within H(e)NodeB using a local PDN connection  Word-p. 10
5.2.1  Applicability
5.2.2  Architectural principles  Up
5.2.2.1  General principles
5.2.2.2  Architectural functions  Word-p. 11
5.2.2.2.1  LIPA
5.2.2.2.2  SIPTO for H(e)NodeB  Word-p. 12
5.2.2.3  Activation/Deactivation mechanism for LIPA and SIPTO
5.2.2.3.1  LIPA
5.2.2.3.2  SIPTO
5.2.3  Architecture variants  Word-p. 13
5.2.3.1  Architecture variant 1 for LIPA
5.2.3.1.1  General  Up
5.2.3.1.2  LIPA PDN connection establishment  Word-p. 14
5.2.3.1.3  Inter-HeNodeB mobility  Word-p. 16
5.2.3.1.4  S1 Release procedure
5.2.3.1.5  UE Triggered Service Request procedure
5.2.3.1.6  L-GW Triggered Service Request procedure  Word-p. 17
5.2.3.1.7  Standards impacts  Word-p. 18
5.2.3.2  Architecture variant 2 for LIPA
5.2.3.2.1  General
5.2.3.2.2  LIPA Architecture for HeNodeB  Word-p. 19
5.2.3.2.3  LIPA Architecture for HNB with S4-SGSN  Up
5.2.3.2.4  L-GW functions  Word-p. 20
5.2.3.3  Architecture for LIPA for UMTS
5.2.4  Open architectural issues  Word-p. 21
5.2.5  Evaluation
5.3  Solution 2 - Local IP Access and Selected IP Traffic Offload at H(e)NodeB by NAT  Word-p. 22
5.3.1  Applicability
5.3.2  Architectural principles
5.3.3  Paging and Mobility Support  Word-p. 23
5.3.4  Architecture diagrams
5.3.5  Deployment requirement and limitations  Word-p. 24
5.3.6  Standard Impacts
5.4  Solution 3 - GGSN allocation to offload point  Word-p. 25
5.4.1  Applicability
5.4.2  Architectural principles
5.4.3  Location of breakout point  Word-p. 26
5.4.2.1  RNC Breakout
5.4.2.2  HNB-GW Breakout
5.4.2.3  HNB Breakout
5.4.4  Mobility aspects of LIPA and SIPTO
5.5  Solution 4 - Selected IP Traffic Offload at Iu-PS  Up
5.5.1  Applicability
5.5.2  Architectural principles  Word-p. 27
5.5.3  Traffic Offload Function
5.5.4  Offload procedure  Word-p. 28
5.5.5  Impacts on specification  Word-p. 29
5.6  Solution 5 - Selected IP Traffic Offload solution based on local PDN GW selection
5.6.1  Applicability
5.6.2  Architectural principles
5.6.3  Architecture Diagrams  Word-p. 30
5.6.4  Standards impacts  Word-p. 31
5.6.5  Open architectural issues  Word-p. 32
5.7  Solution 6 - Local Gateway based Architecture
5.7.1  Applicability
5.7.2  Architectural principles
5.7.3  Open issues  Word-p. 34
5.7.4  Establishment of PDN connectivity subject to LIPA or SIPTO
5.7.5  Terminating traffic handling  Word-p. 36
6  Evaluation  Word-p. 37
6.1  Evaluation of GW Selection mechanism
6.1.1  General  Up
6.1.2  Scenario 1: GW close to the UE's point of attachment  Word-p. 38
6.1.3  Scenario 2: GW co-located with HeNodeB or HNodeB  Word-p. 39
6.2  Evaluation of GW re-selection mechanism for SIPTO
6.2.1  General
6.2.2  GW re-selection criterion
7  Conclusions  Word-p. 40
7.1  Conclusion on SIPTO macro
7.2  Conclusion on LIPA
7.2.1  Conclusion on the LIPA architecture
7.2.2  Conclusion on the architecture for Rel-10  Up
7.3  Conclusion on SIPTO in the Home (e)NodeB subsystem  Word-p. 41
A  Evaluation of methods for operator control of SIPTO traffic  Word-p. 42
A.1  General
A.2  SIPTO traffic control granularity
A.3  Enforcement of SIPTO Routing Policies
B  Change history  Word-p. 43

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