Power Optimized Real Time Communication Through the Mobile Sink in WSNs

Abstract

In the recent decades, computer science and engineering has found an emerging research domain in data communication network field, the WSN. WSN applications are generally deployed in fields where uninterrupted supervisions are required. In WSN applications, thousands of energy-constrained sensor nodes are used to sense the data from the deployed environment and transmit the sensed data to the base station (BS). Recent advances in wireless sensor networks lead to rapid development of real-time applications. The requirement of low latency in communication and maximum utilization of node's battery power are becoming more and more important issues in emerging applications especially in fire monitoring, medical care, battle field surveillance, etc. The cluster-based routing protocols can improve the energy life of the sensors and hence can prolong the entire network lifetime but uneven load distribution among the clusters, and static BS may lead to energy hole problem to the entire communication network. In this paper, we present a novel real-time energy-efficient routing protocol in a different way so that real-time communication is achieved by allowing low latency, but it must not incur infinite bounded waiting for the non-real-time regular data communications. This paper also considers mobile sink node to avoid the energy hole problem.