Date Added: Jan 2011
Recent development in Micro Electro Mechanical System (MEMS) technology leads to the development of low cost and low power utilizing wireless micro sensor nodes. Wireless sensor network is a power consuming scheme, because nodes executes on restricted power batteries which reduces its lifetime. Extending the network lifetime is based on the better managing of sensing node energy resource. Energy efficient routing protocol is very essential technique in wireless sensor networks because sensor nodes are extremely energy based. As a result, several researchers have provided different routing protocol for sensor networks, particularly routing protocols depending on clusters protocols.