Date Added: Dec 2012
In this paper, the operating principle of SEP in Wireless Sensor Networks (WSNs) is analyzed, and a Multi-Hop Routing Scheme (MH-SEP) is proposed based on different spatial density of nodes. The network is to be divided into different sizes of areas according to the multi-hop routing scheme, the cluster heads use multi-hop mode of communication to send their data to the base station considering the heterogeneous of networks. This paper mainly analysis the performance of scheme based on different spatial density of nodes. The simulation shows that the advantage of the new scheme.