1. 3GPP Liaison Report Date: 2013-01-16 Authors: January 2013
doc.: IEEE /0092r0
January 2013
3GPP Liaison Report
Date:
Authors:
Stephen McCann, RIM
Stephen McCann, RIM

2. Interest growing in WLAN-3GPP interworking in two main areas:
January 2013
doc.: IEEE /0092r0
January 2013
Interest growing in WLAN-3GPP interworking in two main areas:
RAN (Radio Access Network)
SA (System Architecture)
Stephen McCann, RIM
Stephen McCann, RIM

3. RAN Objective Currently being discussed within 3GPP working group RAN2
January 2013
doc.: IEEE /0092r0
January 2013
RAN
Currently being discussed within 3GPP working group RAN2
Work item description available at:
Addressing interworking of WLAN and Cellular traffic at the radio level.
Objective
Project intends to identify opportunities for improved 3GPP radio access and WLAN interworking, in particular through the use of extended knowledge at radio layers.
Stephen McCann, RIM
Stephen McCann, RIM

4. Objective SA: WLAN Network Selection
January 2013
doc.: IEEE /0092r0
January 2013
SA: WLAN Network Selection
Release 12 work item on WLAN Network Selection for 3GPP Terminals
A study currently being discussed within 3GPP WG SA2 (work item code: WLAN_NS)
Work item description available at:
Objective
The objective of this work item is to evaluate and if needed enhance existing 3GPP solutions for network selection for WLAN networks taking into account WFA Hotspot 2.0 solutions.
Stephen McCann, RIM
Stephen McCann, RIM

5. SA: WLAN ↔ 3GPP EPC interconnect
January 2013
doc.: IEEE /0092r0
January 2013
SA: WLAN ↔ 3GPP EPC interconnect
Release 12 study on S2a Mobility based over GTP (SaMOG) and WLAN access to Evolved Packet Core (EPC)
A study currently being discussed within 3GPP WG SA2 (Work item code: FS_SaMOG)
Work item description available at:
Objective
Solutions for providing connectivity between a 3GPP EPC and a trusted WLAN on the S2a interface using GTP.
Stephen McCann, RIM
Stephen McCann, RIM

6. SA: Optimised mobility taking into account 3GPP RAT type
January 2013
doc.: IEEE /0092r0
January 2013
SA: Optimised mobility taking into account 3GPP RAT type
Release 12 study on Optimised Offloading to WLAN in 3GPP RAT mobility
A study currently being discussed within 3GPP WG SA2 (Work item code: FS_WORM)
Work item description available at:
Objective
Identifying extensions to ANDSF ISRP and possibly ISMP policies in order to enable policy differentiation of 3GPP RATs (e.g. E-UTRAN versus UTRAN, GERAN vs. UTRAN) with respect to WLAN.
Studying how mobility between 3GPP RATs could be performed in a more optimised way taking into account the possible availability of WLAN.
Stephen McCann, RIM
Stephen McCann, RIM