Cross-layer control in wireless networks with QoS constraints

Tuesday, June 28, 2005 - 3:15pm - 4:15pm
EE/CS 3-180
Eytan Modiano (Massachusetts Institute of Technology)
In this talk we will describe algorithms for resource allocation in wireless networks that attempt to optimize network performance across multiple layers of the protocol stack. In the first part of the talk we will consider the joint problem of flow control, routing, and scheduling in a wireless network subject to Quality of Service requirements. In particular, we will describe a dynamic control strategy that maximizes the sum utility in the network; and can be used to achieve a wide range of fairness objectives. In the second part, we consider a wireless transmitter whose data rate can be controlled by varying the transmission power. For such a system we will describe optimal transmission policies that satisfy delay constraints and also minimize the total transmission energy expenditure.