An Introduction to the Wireless Panel at IEEE WCNC 2009 Professor Kin K. Leung EEE and Computing Departments Imperial College April 7, 2009

2 Current and Future Wireless Networks IP backhaul Network BS WLAN WiMax Control Server Gateway Access Point Public Internet Application (Web) Servers Corporate Computers 3G/4G IEEE Ad-Hoc Sensors YouTube Social networks ….

Big Question: What Are Wireless Networks and Services 10 Years Down the Road??

Look Back 10 Years Ago… GSM, GPRS and EDGE –Mainly voice services –Very limited data applications –W-CDMA 3G had not deployed yet IEEE (WiFi) –802.11a (up to 54 5 GHz band) and b (up to GHz band) specifications were approved –802.11g ( GHz, backward compatible with b) specification was approved in 2003 –Not much use yet! IEEE (WiMax) –The first spec for wireless broadband access at fixed location and line-of-sight links was approved in 2002! Huge advances, development and Deployment are possible in 10 Years!

Advances of Wireless Technologies in Last 10 Years PHY Layer –Multiple antenna techniques (e.g., MIMO, beamforming) –Cooperative communications (e.g., relaying) –Ultra wideband communications –Cognitive Radio –…–… Networking –Wireless scheduling (e.g., for diversity gain) –Network protocols: MAC, routing, transport –Energy efficient protocols (e.g., sensor networks) –Auto/self-configuration and management –Fundamental network performance limits (e.g., ad-hoc networks) –…–… Applications –Continued expansion of and web browsing –Streaming video (e.g., YouTube) –Social networks –Peer-to-peer networks –…–…

Big Question Again: What Are Wireless Networks and Services 10 Years Down the Road??

International panelists –Yinggang Du (Huawei Technologies, China) –Victor Leung (University of British Columbia, Canada) –Ross Murch (Hong Kong University of Science and Technology) –Sam Samuel (Alcatel-Lucent, UK) –N.K. Shankaranarayanan (AT&T Labs – Research, USA)