NODE CONTROL METHODS TO REDUCE POWER CONSUMPTION USING PUSH-BASED BROADCAST FOR MOBILE SENSOR NETWORKS
Keywords:Mobile Sensor Networks, Push-based Broadcast, Power Consumption
Recently, a lot of researchers have directed their attention to mobile sensor networks that are constructed by sensor nodes with a moving facility. Mobile sensor networks enable to construct a wide-range sensing system by the cooperative behaviours of a small number of mobile sensors. However, because radio communication range of the nodes does not cover the whole sensing area, every node has to move closer to the sink to deliver its sensor readings. Thus, the power consumption to deliver the sensed data to the sink becomes large. We previously proposed two mobile sensor control methods to reduce the power consumption by employing push-based broadcast, named the MST (Moving-distance-based Static Topology) and the SR-N (Shortest Route with Negotiation) methods for sparse mobile sensor networks. In this paper, we propose the MST/NFD (MST with Node Failure Detection) and the SR-N/NFD (SR-N with Node Failure Detection) methods as extensions of the MST and the SR-N methods to detect node failures. We also conducted simulation experiments to evaluate the performance of our methods and confirmed that the MST/NFD method is more robust over node failures than the SR-N/NFD method, and that the SRN/ NFD method can achieve the high throughput than the MST/NFD method.
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