Efficient Multi-sink Relocation in Wireless Sensor Network

Sensor networks are dense wireless networks where information is gathered by sensor elements spread out in an interest area. The main deficiency of sensors is their finite source of energy. Therefore, an efficient utilization of this energy resource conditions the network lifetime. In order to enhance the performance of these networks, some research efforts have focused on the mobility of a single or multiple sink nodes. In this paper, we propose a new dynamic approach to extend the lifetime of a sensor network based on both mobility and multiplicity of sinks. According to the evolution of the network, in terms of energy dissipation and distribution, this approach aims to find the optimal position for all the sinks in order to maximize the lifetime of the network and move accordingly these sinks in an intelligent manner.