Energy Efficient Congestion Control in Wireless Sensor Network

Abstract

Power consumption plays crucial role in wireless sensor network (WSN). WSN is widely used for many applications in industries, military, home monitoring system etc. Data is sensed, manipulated and transmitted to the next hop nodes. Finally it reaches the destination. Certain amount of battery power is consumed by the sensor node for transmitting, receiving, listening and sleeping. In order to utilize the battery power efficiently we developed a technique which finds suitable forwarding node for transmission. The forwarding node is found based on the power level of the transmitter node. The forwarding node is chosen so that the distance to the destination is minimum compared to other neighbor nodes of the transmitter node. Moreover, energy in WSN is wasted due to packet retransmission. Network congestion is one of the primary reasons for packet drop which leads to packet retransmission. Therefore in addition to the energy efficient model, congestion control method is also proposed. Suitable outgoing rate is selected for every node in order to reduce congestion. Simulation results are compared with existing protocols and show improvement.