A Comparative Study of Various Routing Technique for Wireless Sensor Network with Sink and Node Mobility

Abstract

Sensor network is made up of a large number of sensor nodes for communication. Some nodes can work as a gateway which transmits data to the sink. These nodes are considered as a bottleneck in multi-hop networks because they send data collected from other nodes, and hence it drains their energy quickly. This problem is known as Hot Spot problem. So, for balancing the energy throughout the network, sink and node mobility can be used. A mobile sink could collect data without the need of gateway, and hence the problem of a bottleneck in the multi-hop network can be minimized. Along with the sink, sensor nodes also can be made mobile. Energy efficiency of WSN is achieved by using mobile sensors and mobile sink with enhanced coverage, and better channel capacity. There are various routing protocols to reduce energy consumption in a mobile WSN. This review paper mainly concentrates on the study of different protocols that are used for efficient energy consumption using the mobile sink and mobile sensor nodes.