Title: 
Managing Critical Resources in Wireless Ad Hoc Networks -- MAC-Centric Approaches

Abstract: 
Energy and bandwidth are the most important resources in wireless ad hoc networks. How to manage them effectively for purpose of prolonging device as well as network lifetime, and for optimal network performance are challenging problems. In this talk, I give an overview of my research work on these problems. In particular, I will introduce in details each of my work on managing power and bandwidth. 

LISP is a link-indexed statistical prediction approach to reducing end-to-end delay when nodes are operated in the Power Save Mode (PSM). The key idea is to explore the inherent relation between an ATIM-ACK exchange and sequential incoming traffic. End-to-end delay under LISP can be reduced within one beacon interval compared to that under original PSM.

To effective utilize bandwidth and allocate it among different prioritized traffic, I proposed a rigorous theoretical model of the service differentiation mechanism defined in IEEE 802.11e: Enhanced Distributed Control Function (EDCA). Some insightful observations are made. I leverage the theoretical model and the numerical results thus obtained and proposed a QoS provisioning framework for the newly emerging UltraWideBand Wireless Personal Area Networks (UWB WPANs).

Bio: 
Chunyu Hu is a Ph.D candidate of Electrical and Computer Engineering in the University of Illinois at Urbana-Champaign. Her research interest is in network modeling, performance evaluation, protocol design and simulation of wireless ad hoc networks. She is a recipient of the Motorola Center for Communications Fellowship during 2005-2006 academic year. She obtained her B.S. and Master degrees in 1992 and 1997, respectively, from the University of Science and Technology of China (USTC). More information is available at http://lion.cs.uiuc.edu/~chunyuhu.