Efficient Communications over Wireless Sensor Networks

Power saving is a very critical issue in energy-constrained wireless sensor networks. Many schemes can be found in the literature, which have significant contributions in energy conservation. The aim of this study is to propose a distributed technique able to guarantee communications over all sensors and reducing in a considerable rate the energy consumed. The originality of the solution is the use fundamental principles inherited from distributed computing (leader election, consensus, abstract ring structure). The aim is to allow to the network to achieve a self organizing procedure which assigns a slot time to each sensor. Indeed, each sensor will have a particular slot for listening and another one for sending. The slot assignment is done in distributed manner and can adapted dynamically.