Supporting Local Breakout in HRPD Femto Peerapol Tinnakornsrisuphap Qualcomm Doug Knisely June 16 th, 2008 Notice ©2008. All rights reserved. The contributors grants a free, irrevocable license to 3GPP2 and its Organization Partners to incorporate text or other copyrightable material contained in the contribution and any modifications thereof in the creation of 3GPP2 publications; to copyright and sell in Organizational Partner’s name any Organizational Partner’s standards publication even though it may include portions of the contribution; and at the Organization Partner’s sole discretion to permit others to reproduce in whole or in part such contributions or the resulting Organizational Partner’s standards publication. The contributors is also willing to grant licenses under such contributor copyrights to third parties on reasonable, non-discriminatory terms and conditions for purpose of practicing an Organizational Partner’s standard, which incorporates this contribution. This document has been prepared by the contributors to assist the development of specifications by 3GPP2. It is proposed to the Committee as a basis for discussion and is not to be construed as a binding proposal on the contributors. The contributors specifically reserves the right to amend or modify the material contained herein and nothing herein shall be construed as conferring or offering licenses or rights with respect to any intellectual property of the contributors other than provided in the copyright statement above. The contributors may hold one or more patents or copyrights that cover information contained in this contribution. A license will be made available to applicants under reasonable terms and conditions that are demonstrably free of any unfair discrimination. The contributors reserves the right to use all material submitted in this contribution for its own purposes, including republication and distribution to others.

2 Goals Main goals for HRPD Local Breakout Allow AT to reach local server/printer at home via HRPD Femto Off-load traffic from wireless operator’s backhaul when AT is on Femto AT should still be able to access service on wireless operator’s domain similar to when the AT is on macro basestations

3 Femto Local Breakout Overview Red = Traffic Traversing Operator’s network –Goal : Allow ATs to be able access services similar to when AT is on macro network –Assumption : There is IPsec tunnel between Femto cell and the wireless operator’s network Blue = Local breakout to public Internet via Femto –Goal : Traffic can bypass home network to save operator’s resources and improve latency Green = Local breakout to local CN –Goal : AT can communicate with servers at home

4 Supporting HRPD Local Breakout AT uses AN-terminated stream for local breakout (blue and green) and PDSN- terminated stream only for operator’s service (red) Two IP interfaces and addresses are assigned to the AT –Green and blue are on AN-terminated stream and are in one IP interface –Red is on PDSN-terminated stream and is another IP interface (same with legacy) –Each packet is routed on to an IP interface based either on application or routing policy Analogous to how VPN works

5 Recommendation -Standardize method to support Local Breakout for HRPD Femto -Allow HRPD Femto to assign IP address to AT on AN-PPP -Specify behavior of IP interface associated with AN-PPP regarding initialization, handoff, IP address assignment -Define mechanism to upload routing policy to AT -Define RADIUS parameter whether the user is authorized to use local breakout