Gerenciamento integrado de energia e controle de topologia em redes de sensores sem fio.

Abstract

This work presents two solutions for optimizing routing, topology control, and power consumption in Wireless Sensor Networks (WSN). The first solution includes two novel Dynamic Power Management (DPM) techniques designed and evaluated under a realistic discharge battery model (i.e., Rakhmatov-Vrudhula battery model). Both techniques take advantage of partially turning off some node components based on the remaining battery capacity, allowing battery capacity recovery due to the relaxation phenomena. An extensive performance analysis shows that the proposed DPM techniques can extend the node lifetime. The second solution presented in this work regards a novel multicoverage with bounded distance topology control mechanism. This mechanism makes it feasible building power saving backbones for WSNs, and also reducing the average packet delay in the network. Both solutions were implemented and evaluated with the Network Simulator NS-2, and extensive simulation results show the advantages of applying the proposed solutions by themselves or when combined together in a broadcast routing protocol.