Movement Parameter in Mobile Sensor Networks

Swetha Ireni; A.Pradeep Kumar

Movement Parameter in Mobile Sensor Networks

Authors: Swetha Ireni, A.Pradeep Kumar

Unique Paper ID: 144110
Volume: 3
Issue: 6
PageNo: 105-110

Keywords: Wireless sensor networks target coverage connectivity mobile sensors energy consumption

Abstract:
Coverage of interest points and network connectivity are two main challenging and practically important issues of Wireless Sensor Networks (WSNs). Although many studies have exploited the mobility of sensors to improve the quality of coverage and connectivity, little attention has been paid to the minimization of sensorsâ€™ movement, which often consumes the majority of the limited energy of sensors and thus shortens the network lifetime significantly. To fill in this gap, this paper addresses the challenges of the Mobile Sensor Deployment (MSD) problem and investigates how to deploy mobile sensors with minimum movement to form a WSN that provides both target coverage and network connectivity. In this paper data collection problem is defined where, in a round of communication, each sensor node has a packet to be sent to the distant base station. If each node transmits its sensed data directly to the base station then it will deplete its power quickly. The protocol presented in this is an elegant solution where clusters are formed to fuse data before transmitting to the base station. By randomizing the cluster heads chosen to transmit to the base station. To this end, the MSD problem is decomposed into two sub-problems: the Target Coverage (TCOV) problem and the Network connectivity (NCON) problem. We then solve TCOV and NCON one by one and combine their solutions to address the MSD problem. The NP-hardness of TCOV is proved. For a special case of TCOV where targets disperse from each other further than double of the coverage radius, an exact algorithm based on the Hungarian method is proposed to find the optimal solution. Sensor webs consisting of nodes with limited battery power and wireless communications are deployed to collect useful information from the field. Gathering sensed information in an energy efficient manner is critical to operate the sensor network for a long period of time. In this paper, we propose PEGASIS (Power-Efficient Gathering in Sensor Information Systems), a near optimal chain-based protocol. In PEGASIS, each node communicates only with a close neighbor and takes turns transmitting to the base station, thus reducing the amount of energy spent per round. We also use the robot informatio

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Cite This Article

ISSN: 2349-6002
Volume: 3
Issue: 6
PageNo: 105-110

Movement Parameter in Mobile Sensor Networks

Available:https://ijirt.org/Article?manuscript=144110

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UGC Approved
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