A review on energy efficient protocols in wireless sensor networks

Wireless Sensor networks are a collection of the sensor nodes with inbuilt processor and memory unit. The data collected by each sensor node is communicated through the network to a single processing center that uses all reported data to detect the event. Reliable routing of the packets is the crucial task in the wireless sensor networks. The message passing must be designed to save the energy of the sensor nodes. The routing protocols used in other networks cannot be used in WSN due to its battery powered nodes. This paper give an overview of the different routing approaches used in wireless sensor networks and a brief model of energy efficient protocols in WSN. This paper includes future work in direction to provide better energy efficiency in wireless sensor networks.