System analysis of wireless packet networks carrying voice over IP

Wednesday, June 22, 2005 - 3:30pm - 4:30pm
EE/CS 3-180
Philip Fleming (Motorola)
Joint work with Amitava Ghosh and Ivan Vukovic.

This tutorial will cover the system architecture, protocol design and performance characteristics of voice and other quasi-real-time applications such as push-to-talk over wireless packet networks. We address features of the bearer path such as voice coding and IP header compression as well as control plane characteristics such as call set-up and hand-off latency. We will give an overview of the next generation wireless wide area network technologies, HRPD (EV-DO), HSUPA/HSDPA and 802.16e and present analysis and simulation of system behavior for each under moderate and heavy loading conditions using both real- and non-real-time traffic and mixtures. Packet scheduling and media access control will also be discussed in some detail. Toward the end of the tutorial we will discuss open research areas.