Today, advanced knowledge of Wireless Sensor Systems used in many presentations like fitness, atmosphere, battlefield etc. The sensors equipped with incomplete power sources. Consequently, efficiently exploitation sensor nodes power can preserve a prolonged network generation. One of the chief issues in sensor systems is emerging an energy-efficient routing procedure to recover the lifetime of the network system. In this review, we present numerous types of procedures for grouping and aggregation of data in WSN.
Wireless Sensor Networks, Energy Efficiency, Network Lifetime, clustering.