A Review on Various Inter Cluster Multi-hop Routing Protocols in Wireless Sensor Network

Over the last few years, WSNs has attracted tangible involvement in many real time applications. They are composed of small, low cost sensor nodes and these nodes having limited power. After consumption of power, sensor nodes become dead and the life period of WSNs depends on life of sensor nodes present in the network. Sensor nodes are generally deployed in remote area where recharging or replacement of battery is not possible. Hence, it is compulsory to develop some the techniques to improve the life of the nodes and life-time of the network. Clustering protocol is used to increase the lifetime of the wireless sensor networks and for long distance data transmission; Multi hop roughing protocol are preferred. MH technique reduced the energy cost of every node which lies in path. This paper describes various inter cluster multi hop routing protocols in WSNs.