ABSTRACT: This contribution provides a proposal for 3GPP2 Network evolution. TITLE: Comments on AIIG TSG-X WG3 RECOMMENDATION: Review and Adopt Samsung Electronics grant a free, irrevocable license to 3GPP2 and its Organizational 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 all or portions of this contribution; and at the Organizational Partner's sole discretion to permit others to reproduce in whole or in part such contribution or the resulting Organizational Partner's standards publication. Samsung Electronics are 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 Samsung Electronics 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 Samsung Electronics. Samsung Electronics specifically reserves the right to amend or modify the material contained herein and to any intellectual property of Samsung Electronics other than provided in the copyright statement above. X xxx DATE: December 04, 2006 SOURCE: Kyungjoo Grace Suh, Bill Semper, B.S. Bae, Veronika Kondratieva, Naehyun Lim, Daegyun Kim Tel Mobile Notice

2/9 Access Independent IP Gateway - Source : X R3 Layer 3 Common Functions FA/NMA NAS device AAA Client QoS EP Policy EP NFCC Packet Filter Prepaid Client Hot-lining device IDS/IPS Access Point Lower Layer Termination Point Support for specific Access Technology AIIG IP Core Network Various Access Network Technologies

3/9 Introduction for Comments on AIIG  The AIIG proposed in X R3 had pointed out good points; In evolved network, the AIIG will use common hardware platform. The different access technology will use common IP platform in AIIG.  However, AIIG supporting different network functionality in the same physical entity has the following limitations; Taking all functionalities into one AIIG including not necessary functions can be burden to do services. The inter-access L2 handoff within one AIIG causes limitation of network configuration to operators in the future. Operators are hard to choose multiple vendors to support their evolved network because the first vendor’s product will dominate all markets

4/9 Limitations of AIIG(1/2)  The AIIG has limitations in Inter-technology handoff. To do the handoff, technology dependent context must be transferred from one access technology to another access technology. Regarding authentication and charging, even though AIIG is used, the re-authentication and recharging with AAA have to happen. –Context related to authentication and charging with access technology has to be moved from one access technology to another access technology.  The AIIG also has Inter-AIIG handoff limitation The L2 handoff interface must be defined to support inter-AIIG L2 handoff

5/9 Limitations of AIIG(2/2)  There is a limitation to reuse Access Agnostic functions because the functions have different protocol usage and detail message fields.  Each software included in each access-technology seems to be the same, but practically, each CAN NOT be the same because it is being developed and each is dependent on its own technology. For examples, AAA interface includes its own standard capabilities and its own schemes developed by each technology. ROHC channel is established on the service flow in 3GPP or WiMAX while ROHC channel is established on top of the PPP in 3GPP2. It results re-establishment of ROHC channel during the inter-tech.

6/9 Proposal of ATE-GW (1/2)  ATE GW has the following functions: Layer 3 common functions 3GPP2 HRPD Rev’C specific functions Paging/Location management and Idle mode termination functions  ATE GW can be made based on Common Platform.  ATE GW supports Layer 2 handoff with Legacy PDSN and other access technologies. Interface between PDSN and ATE GW must be standardized to support L2 handoff  ATE GW supports Proxy Mobile IP.  New services or enhancements can be easily applied depending on each access technologies.  Additional features are easily added into AT -GW without any impact on legacy PDSN.

7/9 Proposal of ATE-GW (2/2)

8/9 Proposed Network Architecture PDSN DO AN PDIF WLAN AP HA DHCP Server AAA DO AN ATE-GW Rev’C E-BS Rev’C E-BS Rev’C E-BS Rev’C E-BS PCF ATE-GW BS IPGW IP Network Core IP Network P- P’ A10/A11R6 PDSN DO AN PCF P- P’ 3GPP2 ATE N/W3GPP2 Legacy N/W Non 3GPP2 N/W (e.g. 3GPP, WiMAX) Non 3GPP2 N/W (WLAN) 3GPP2 Legacy N/W Ax Key Features Similar Network Topology over multiple accesses Inter-technology L2 HO Cell ACell BCell CCell DCell ECell HCell FCell G MS (DO, Rev’C, 3GPP, WiMAX, WLAN)

9/9 Proposed Network Entity Function FunctionsATE GWE-BS IP Address Management (CoA)O Foreign Agent (FA) for MIPv4O DHCP RelayO PMIP ClientO IP Packet ClassificationO IP Header Compression (ROHC)O QoS EnforcementO Paging ControllerO Location ManagementO AAA ClientO Accounting Consolidation/AggregationO EAP AuthenticatorO L2 CipheringO (optional)O PHY/MACO ARQ/HARQO Radio Resource ManagementO Radio Channel Allocation/ ManagementsO