SENSOR NETWORKS AND DATA COMMUNICATION

Abstract

Mobile Wireless Sensor Network (M-WSN) derives its name from the mobile sink or mobile sensor nodes in the Wireless Sensor Network (WSN). because the sensor nodes are energy constrained, energy efficiency is that the main aspect to be considered in any applications. By considering mobile sensor nodes in WSN, we will have better energy efficiency, improved coverage, and enhanced target tracking in Wireless Sensor Network. thanks to mobility of nodes, a mobile WSN has dynamic topology. For all data gathering applications, the topology of mobile WSN depends on either the trail of mobile sink or position of mobile nodes. So the whole WSN topographic sink is mobile or the sensor nodes are mobile so keep changing.That is, we've dynamic topology. counting on application scenario, we may use a mobile sink to gather information from a static WSN or a dynamic WSN. generally static WSN uses multihops for digital communication from sensor node to sink. Hence sensor node closer to sink is usually in use and its energy gets exhausted quickly, thereby it dies down first, breaking link to sink and whole network collapses. this is often one among the intense problems to be considered. Mobile WSN is one among approach which will increase life time of network because nodes close sink keeps on changing in order that no particular node are going to be always on the brink of sink. it's also possible by controlled mobility of nodes, all nodes successively can take role of being on the brink of sink and supply necessary services. Also by providing mobility to nodes in controlled manner it also possible to scale back number of hops to sink from a node, there by errors in communication gets reduced. during this article we consider two general application areas, studying the conditions of disastrous area where in static sensor nodes are deployed in disastrous area and a mobile sink agent which is outside the boundary moves around predefined path to collect information’s of disastrous area, a battle field where in two way digital communication between captain and soldiers is Both the captain and the players need a place where there can be less movement.The networking required in both cases is the mobile WSN.We propose proper architecture and digital communication in these contexts.