Brief Outline IntroductionWLAN/CDMA2000 CDMA2000 Architecture WLAN Architecture Architectural Choices Tightly-coupled interworking Loosely- coupled interworking Handoff Spurious handoff triggers WLAN-to-CDMA2000 handoff scheme Mobile IP Other Issues Conclusion

Wireless Local-area networks (WLANs) based on standard Wireless Local-area networks (WLANs) based on standard Data rates of 1 Mbps to 54 Mbps over few thousand meters Faster and short distance access Wireless Wide-area networks based on 3G standard such as CDMA2000 Wireless Wide-area networks based on 3G standard such as CDMA2000 Data rates of 144 Kbps to 2.4 Mbps over several miles Slower and long distance access Integration  Major benefits to service providers and end-users  Offload data traffic from CDMA2000 network to WLANs network  One service subscription with one service provider - Home network provider  Authentication Authorization and Accounting server - Home AAA  One Billing statement Introduction

WLAN/CDMA2000 WLAN/CDMA2000

CDMA2000 Architecture Radio Access Network

AP ROUTER WLAN Architecture

 Tightly coupled interworking  Loosely coupled interworking Architectural Choices

Tightly-coupled Interworking

 Tightly coupled interworking  Loosely coupled interworking Loosely-coupled Interworking

Handoff

Spurious Handoff Triggers  Tightly coupled interworking  Loosely coupled interworking

Handoff Scheme  Tightly coupled interworking  Loosely coupled interworking

Mobile IP  Tightly coupled interworking  Loosely coupled interworking

 Handoff from CDMA WLAN  WLAN card with built- in 3G credentials Other Issues