Joint Rate Control and Power Control in Wireless Ad Hoc Networks with QoS Requirements

A joint rate control and power control mechanism in wireless ad hoc networks with Quality-of-Service (QoS) requirements is proposed in this paper. Based on Network Utility Maximization (NUM) framework, we firstly analyze and give an optimization model which takes into consideration different QoS classes´ requirements and network lifetime constraint. Then we decompose the primal optimization problem into three subproblems with Lagrange dual decomposition theory. A distributed joint rate control and power control algorithm with message passing is thus obtained. Our theoretical analysis proves rigorously that the proposed algorithm. can converge quickly.