Power Optimization in Fault-Tolerant Mobile Ad Hoc Networks
In this paper, we investigate the transmission-power assignment problem for k-connected Mobile Ad hoc NET-works (MANETs), the problem of optimizing the lifetime of a MANET at a given degree k of connectivity by minimizing power consumption. Our proposed solution is fully distributed and uses a model-based transmission power adaptation strategy based on model-predictive control. Specifically, a stochastic model of the network is used by a state estimator to predict the networks future degree of connectivity and remaining energy. The predicted states are used by an optimizer to derive an optimal transmission power assignment sequence which tracks the desired connectivity level k while minimizing energy consumption. Our experimental results on a simulated wireless sensor network comprising 100 mobile nodes reveals that our localized topology control algorithm provides an almost identical control policy to that of a globalized scheme which is solving a fully observable problem. The difference, of course, is in the scalability of our localized solution, which requires much less communication bandwidth and energy than the globalized approach.
Oliviero Riganelli Radu Grosu Samir R.Das C.R.Ramakrishnan Scott A.Smolka
Diaprtimento di Matematica e Informatica Universita di Camerino Camerino I-62032, Italy Department of Computer Science Stony Brook University Stony Brook, NY 11794-4400, USA
国际会议
11th IEEE High Assurance Systems Engineering Symposium(HASE 2008)(第十一届IEEE高可信系统工程国际研讨会)
南京
英文
362-370
2008-12-03（万方平台首次上网日期，不代表论文的发表时间）