Routing Algorithm for Relay Node Selection in Wireless Sensor Networks

Wireless Sensor Networks is a network system which is composed of one or more sinks and many sensor nodes in generally. The process of wireless communication exists path loss in the wireless channel, which can be affected by the distance between receiver and transmitter, the operating frequency or the other factors. It is especially vital for choosing the optimal relay nodes in the case of energy limitation. To emphasize the energy optimally, a method of relay nodes selection based on the energy model is proposed which is considering the effective data transmission and the energy consumption. Theoretical analysis and experiments show that the energy consumption of the next hop relay nodes is smaller.