Improving network lifetime with mobile LEACH protocol for Wireless Sensors Network

In this paper, we focus on maximizing network lifetime of a Wireless Sensors Network (WSN) using mobile base station. This work is based on the modified LEACH protocol to develop our algorithm which supports node mobility and improves network lifetime. We consider a heterogeneous WSN which consists of a large number of sensor nodes, a few static cluster heads (CH) and a mobile Base Station (BS). Each sensor node periodically sends sensed event packets to its nearest CH. The CH should found an itinerary to send these event packets to the mobile BS. To show that the proposed approach achieves the required reliability and also maximize the network lifetime, we compare this protocol with an algorithm dedicated to a network formed by fixed nodes only. Simulation results show that the proposed mobile multi-hop algorithm, based on adaptive clustering protocol, effectively produces optimal energy consumption for the wireless sensors network and improves the network lifetime compared to other approaches.