Topic: Medium Access Control in Wireless Ad hoc networks
Speaker: Jianfeng Wang
Room: NEB 201
Time: 5:00pm~6:00pm, 01/31/2005

Abstract
Ad hoc networks receive great research interests recently due to its
potential applications and its difficulty to well address;-). The MAC layer
stays between the physical layer and upper networking layers and plays an
important role in the whole system design.  This short tutorial on MAC aims
to identify the baisc requirement of ad hoc MAC, the fundamental design
goals and several important design issues such as link adaptation and
spatial reuse.  Basic contention based MAC protocols will be looked inside
so that we can understand why and how CSMA/CA based MAC protocol works.
After presenting the basic scheme, we go to several advanced topics: 1) how
to enhance fairness and QoS distributedly; 2) how the rate adaptation,
multiuser diversity and power control come into play; 3)what's the benefit
and challenge to utilize smart antennas in ad hoc networks. Some discussions
and open issues will be presented finally so it can help us to revisit where
we are and how far we can go for the ad hoc PHY/MAC design.