1. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved 3GPP2 All IP Ad Hoc Las Vegas, WA May 18~19, 2000 Source : Contact : LGIC LG Information & Communications, Ltd. Byung-Keun Lim, Ph.D. Phone : +82-343-450-7199 E-mail : bklim@lgic.co.kr The contributor grants 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 portions of the contribution; and at the Organizational Partner's sole discretion to permit others to reproduce in whole or in part such contributions or the resulting Organizational Partner's standards publication. Permission is granted to 3GPP2 participants to copy any portion of this contribution for the legitimate purpose of the 3GPP2. Copying this contribution for monetary gain or other non-3GPP2 purpose is prohibited. All IP network phasing and Architecture SC-AllIP-20000518-___

2. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved Introduction In this contribution, We proposed a new 3 phased steps compare to the previous 2 Phased Steps in order for more smoother migration to All IP network from Legacy Network. For each phase, we give the characteristics of each phase and benefit. and, gives an detailed architecture for the 3G All IP Network system. The Name,Functions, and Protocol stack of the network entities shown in the figure are the same as the last LGIC’s Contribution. In order to support easy comprehension of the function, we included the name of the network entities which is shown in other proposals, when the network entity functions are similar or equal to. The IP RAN and IP Core Network are divided in the architecture diagram only to show the classification without functional change of the network entities.

3. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved Migration Toward an All-IP Network Migration of existing users and networks toward an all-IP network is a strong requirement of many operators. The issues associated with such a migration include: Protection of investment in existing infrastructure; Continued support of existing users and mobile terminals; Ability of operators to migrate portions of their network functionality at a pace and in a manner that best meets their operational and economic goals; Ability of a user to carry forward the E.164 number assigned to a legacy mobile terminal to an all-IP mobile terminal.

4. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved Phasing Phase I : IP MSC step - Remove of circuit switch, modify ANSI-41 for IP transport Phase II : IP RAN step - IP transport to BTS, modify 3G-IOS for IP transport Phase III : IP-IOS and IP-MAP step - Develop, Globally Unique IOS and MAP

5. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved Architecture Phase I : removing MSC - IP MSC step. - Removing MSC in the network - Develop MM, Radio Call Controller, Packet Routing Controller - Develop VoIP network entities such as Call Agent, Media Gateway, Signaling Gateway, Roaming Gateway, and Multimedia Resource Function - Interconnect the Network Entities by IP network - Reuse 3G-IOS, - Modify ANSI-41 optimum to IP transport Support - Node to Node VoIP, between SDU and Gateway. - handoff and Roaming for legacy 2G/3G - All ANSI-41 domain services, Multimedia Domain Service

6. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved BS/PCF MSC HLR Aquater 3G-legacy network PDSN Internet/ Intranet TG(MGW) SG(SGW) PSTN/PLMN ICG HLR 3G All IP other Carrier’s Network VS(MRF) HA AAA IGSG/ IGTG/(RSGW) Multimedia Internet Domain IP Core BTS BSC/ PCF BTS BSC/ PCF PDSN (MM/RCC PRC) TCA/ (CSCF) 3G RAN Locate MM/RCC/PRC in the RAN, since that entity only controls the radio access network operation and Mobility of the MS Core Network A1’ A3/A7 A2’ Abis Pi Phase I. All IP Network Architecture

7. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved Phase I : Benefit - Smooth migration - Reuse of the RAN with small modification in BSC/SDU - Support of full Services of the Legacy Mobile Station - The best efficient Radio Resource usage for Voice Communication - Use of the IETF’S VoIP protocol - Fast deployment of the All IP Core Network - Easy Migration of the other Access Network to the core network by a clear separation of the RAN

8. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved 2G RAN cdma2000 RAN Other RAN Fixed Access Network All IP Core Network 3G/ All IP carrier PSTN/ PLMN Internet/ Intranet/ ISP cdma2000 RAN 2G RAN Fixed Access Network Fixed Access Network All IP network ANSI-41 Entities Other RAN Service Entities Phase I : Core-network configuration for Multiple Access Network

9. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved Phase II : IP RAN step. - IP transport for Abis/A3/A7 - Modify 3G-IOS optimum to IP transport Support - Node to Node VoIP, between SDU and Gateway. - handoff and Roaming for legacy 2G/3G - All ANSI-41 domain services, Multimedia Domain Service Completion of the All IP networking in the scope of IP networking

10. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved BS/PCF MSC HLR Aquater 3G-legacy network PDSN Internet/ Intranet TG(MGW) SG(SGW) PSTN/PLMN ICG HLR 3G All IP other Carrier’s Network VS(MRF) HA AAA IGSG/ IGTG/(RSGW) Multimedia Internet Domain IP Core BTS BSC/ PCF BTS BSC/ PCF PDSN (MM/RCC PRC) TCA/ (CSCF) All IP RAN Upgrade 3G-IOS only, optimum to IP transport Core Network A1’ Abis/ A3/A7 A2’ Abis Abis’ Pi IP RAN MGCP’ Phase II. All IP Network Architecture

11. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved Phase II : Benefit - Smooth migration - Support of full Services of the Legacy Mobile Station - The best efficient Radio Resource usage for Voice Communication - Use of the IETF’S VoIP protocol - Open I/F RAN entity - Share of the IP Core’s IP Network for IP RAN - Easy Migration of the other Access Network to the core network by a clear separation of the RAN

12. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved Phase III : IP-IOS, IP-MAP step. - Globally Unique IP based IOS - Globally Unique IP based MAP - Further decomposition of the Network Entities Support - Node to Node VoIP, between SDU and Gateway. - handoff and Roaming for legacy 2G/3G - All ANSI-41 domain services, Multimedia Domain Service Develop New IOS and MAP for the Cellular System regardless of CAI

13. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved BS/PCF MSC HLR Aquater 3G-legacy network PDSN Internet/ Intranet TG(MGW) SG(SGW) PSTN/PLMN ICG HLR 3G All IP other Carrier’s Network VS(MRF) HA AAA IGSG/ IGTG/(RSGW) Multimedia Internet Domain IP Core BTS BSC/ PCF BTS BSC/ PCF PDSN (MM/RCC PRC) TCA/ (CSCF) All IP RAN Globally Unique IP-IOS and IP-MAP Core Network Abis Pi IP RAN MGCP’ Phase III. All IP Network Architecture

14. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved BS/PCF MSC HLR Aquater 3G-legacy network IP RAN BTS BSC/ PCF PDSN Internet/ Intranet (MM/RCC PRC) TG(MGW) SG(SGW) PSTN/PLMN ICG HLR 3G All IP other Carrier’s Network VS(MRF) HA AAA IGSG/ IGTG/(RSGW) ALL IP RAN for the 3G-IOS ADSL Cable Fixed Wirless Target All IP Network Architecture LGIC’s View TCA/ (CSCF) All IP Network ANSI-41 Domain, Multimedia Internet Domain Radio Access through ANSI-41 domain, and Application through Multimedia Intrernet Domain IP Core MCA

15. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved CDMA - RAN Access IP Transport Core IP Transport Network Wireless Access Gateway PSTN www. Enterprise Intranets Voice - Signaling Gateway Packet Gateway Services - Resource Mgmt, Service Mgmt, Call Mgmt, Mobility Mgmt vocoder other RAN Fixed Wireless Access BSC (RNC) Access Gateway Business Access Residential Access Framework Illustration - Entity Interconnection: SPCS’s view

16. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved Summary - This phased approach guarantees smooth migration from legacy network to All IP Network - This architecture guarantees the best efficient radio resource usage - The All IP core can support all kind of Access network in the carrier networks - This All IP Internet Multimedia Domain guarantees easy service development, since the Application Multimedia services are developed by a Client/Server relationship. - All IP core network support SHO between the same RAN, and HHO between a different RAN

17. LG Information & Communications, Ltd. LGIC SC-AllIP-20000518-___ 2000 LGIC Proprietary & confidential / All Right Reserved Acronym RCC : Radio Connection Control PRC : Packet Routing Control TCA : Terrestrial Call Control Agent IGSG : Inter Generation Signaling Gateway IGTG : Inter Generation Trunk Gateway ICG : Inter Carrier Gateway SG : Signaling Gateway TG : Trunk Gateway VS : Voice Server