A geographic routing protocol for wireless multimedia sensor networks

Abstract

In recent years, wireless multimedia sensor networks have emerged as a rather promising technique for delivering multimedia information such as still images and videos. Yet WMSNs are known to be resource constrained in terms of energy and bandwidth, which raises many challenges to the design of efficient routing protocols. Meanwhile, the common demand of quality of service (QoS) of multimedia services adds up new considerations while establishing routing in WMSNs. In this paper, we propose an energy balanced geographic routing protocol. Instead of using a merely greedy distance approach for route selection, our protocol takes into account at the same time the residual energy levels of neighboring nodes and delay status. Energy balanced operation is achieved by introducing a randomization process to the route establishing process such that nodes with higher residual energy levels has higher probability to be chosen. Our proposal also considers latency provision and the trade-off between energy efficiency and latency guarantee are studied via simulation in NS2. © 2012 Springer-Verlag.