Research Article
Optimal Rate Allocation and Power Control in Wireless Ad Hoc Networks With Random Access
@INPROCEEDINGS{10.1109/CHINACOM.2008.4685185, author={Xiaojun Han and Xinming Zhang and Jun Lv}, title={Optimal Rate Allocation and Power Control in Wireless Ad Hoc Networks With Random Access}, proceedings={ChinaCom2008-Wireless Communications and Networking Symposium}, publisher={IEEE}, proceedings_a={CHINACOM2008-WCN}, year={2008}, month={11}, keywords={dual decomposition; multiobjective optimization; network lifetime; network utility maximization; rate allocation}, doi={10.1109/CHINACOM.2008.4685185} }- Xiaojun Han
Xinming Zhang
Jun Lv
Year: 2008
Optimal Rate Allocation and Power Control in Wireless Ad Hoc Networks With Random Access
CHINACOM2008-WCN
IEEE
DOI: 10.1109/CHINACOM.2008.4685185
Abstract
For wireless ad hoc networks with random access, we propose an optimal rate allocation and power control mechanism. First, a network utility maximization problem and an energy minimization problem are given in this paper. Using multiobjective optimization theory, we then combine the two conflicting optimization problem together into a new optimization problem. Finally, the new optimization problem is vertically decomposed into three subproblems with the Lagrange dual decomposition: a rate allocation problem at the transport layer, a contention resolution problem at the medium access control (MAC) layer and a power control problem at the physical layer. We prove rigorously that the proposed algorithm can converge quickly. Theoretical analysis and simulation results are provided in support of our conclusions.