Mobile Wireless Sensor Network Using Different Techniques

Authors: Saba Khan, Mrs. Nisha Bhati

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Abstract

The Mobile WSN technique is having mobile nodes in the network. The both sensor nodes and mobile sink can be mobile or there can be mixed sensor nodes. The mobile as well as static sensor nodes in the network based on the application requirements. The routing in mobile WSN poses research issues as nodes are mobile, so it needs to send the data according to the routing protocol while it is moving. So the routing protocols have been proposed considering mobile nodes in the network focusing on research issues like packet loss, energy consumption, and delay. In this paper, the cluster based routing protocols that have been proposed for mobile wireless sensor network are discussed and comparison is done among them.

Introduction

It is possible to say that history of sensor network technology originates in the first distributed sensing idea implementations. In continuous work of researchers and engineers over sensor networks which lately became wireless sensor networks (WSNs) has started exactly with this idea. Like many other technologies, distributed sensing was firstly introduced by the military. The first system which has all the characteristics of sensor networks (distribution, hierarchical data processing system) is Sound Surveillance (SOSUS) System, which was made to detect and track submarines. SOSUS consisted of the acoustic sensors (hydrophones) settled on the ocean bottom. But for practical use distributed sensing with a great number of sensor nodes is of much more interest. The first steps to creating such systems were the following projects: Wireless Integrated Network Sensors (WINS), which started in 1993, and Low power Wireless Integrated Micro sensors (LWIM), which started in the mid-1990s. A wireless sensor network (WSN) of spatially distributed autonomous sensors to monitor physical or environmental conditions, example temperature, pressure, sound,etc. and to cooperatively pass their data through the network to a main location. The more modern networks are bidirectional, an also enabling control of sensor activity. In development of wireless sensor networks was motivated by military applications such as battlefield surveillance; the today such networks are used in many industrial and consumer applications, such as machine health monitoring, industrial process monitoring and control, etc. Wireless sensor network is a collection of sensor nodes interconnected by wireless Communication channels. In each Sensor node is a small device that can collect data from its surrounding area, communicate with other Sensors or with the base station (BS) and carry out simple computations. Recent years have observed an increasing interest in using wireless sensor networks (WSNs) in many applications, and including environmental monitoring and military field surveillance. They applications, small sensors are deployed and left unattended to continuously report parameters such as temperature, humidity, and chemical activity. A reports transmitted by these sensors are collected by observers. The dense deployment and unattended nature of WSNs makes it quite difficult to recharge node batteries.

Conclusion

Routing in Mobile wireless sensor network is one of the most important research issues now a day. Most of the applications now a day require mobility of the nodes. In this paper routing protocols for Cluster Based wireless sensor network has been studied and based on that comparison is being made. The various papers and literature has been studied for mobile wireless sensor network.