Slide 1:Wireless NetworkPerformance Research

Carey Williamson iCORE Professor Department of Computer Science University of Calgary

Slide 2:Computer Science (CPSC)

Quantum Computing & Cryptography Software Engineering (SENG) Distributed Systems & Algorithms Visual & Interactive Computing Networks & Performance HPC & Grid Computing Distributed Algorithms AI/MAS/ Biol.Comp. Unger Simmonds Higham Denzinger Jacob Databases Barker Alhajj Barbosa Hammad Li Mahanti Williamson You are here!

Slide 3:Overview

�Make the Internet go faster� Research area? Wireless networks, Internet protocols, computer systems performance evaluation Approach? Experimental, simulation, analytical Key challenges? Citius, Altius, Fortius! Performance, scalability, robustness

Slide 4:Highlights/Accomplishments

Network Traffic Measurement Workload Characterization/Modeling Portable Networks Wireless Web Servers Wireless Media Streaming Multi-Channel MAC Protocols Web Server Scheduling Policies CDMA Network Capacity Planning

Slide 5:Network Traffic Measurement

Continuous monitoring of U of C traffic on commercial Internet link (100 Mbps), recording TCP SYN/FIN/RST pkt headers 22 months of data and counting� Specific measurement studies to date: TCP reset behaviour (Arlitt) Malicious network attacks (Obied) P2P traffic evolution (Madhukar) Campus WLAN measurement study tentatively planned for 2005-06

Slide 7:Wireless Media Streaming

Wireless Sniffer

Slide 8:UDP Packet Traffic on WLAN

Done

Slide 9:Mobility Issues

Wireless Sniffer

Slide 10:Future Plans

More of the same! IEEE 802.11a/b/g, 802.16, wireless mesh networks, sensor networks, CDMA2000 Citius, Altius, Fortius, Discius For more information: Email: carey@cpsc.ucalgary.ca WWW: www.cpsc.ucalgary.ca/~carey Questions?