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In Wireless Sensor Network, sensor nodes are low powered and small devices mainly deployed in critical regions. Due to their energy constraint issues, many routing algorithms have been developed for efficient forwarding of data for minimizing energy consumption. Considering the static sink, nodes near the sink will have more load for routing data, therefore sink has been made as mobile. Now the sink...
This paper presents a new deployment formulation in order to improve coverage in Sensor Networks. Sensor deployment is an important issue in designing sensor networks. This paper studies the geometric properties of voronoi diagram, addressing a divide-and-conquers deployment protocol in an area of interest. This novel methodology can deploy homogeneous sensor while heterogeneous sensor in whole area...
This paper describes a prototype of a wireless sensor network developed for tracking pilgrims in the Holy areas during Hajj (Pilgrimage). A delay tolerant network principle is used. Energy efficiency, robustness, and reliability are the key factors for the developed system. Every pilgrim will be given a mobile sensor unit that includes a GPS unit, a Microcontroller, antennas and a battery. A network...
In order to monitor environmental conditions, a large quality of static sensors normally are deployed randomly in large monitored area. Obviously, there are coverage holes distributed over the monitored area, and the coverage hole can be polygonal. Each coverage hole is evaluated collaboratively by static sensors surrounding the hole, while all coverage holes are evaluated in parallel. Because a polygon...
For some sensor network applications, the problem of sweep coverage, which periodically covers POIs (Points of Interest) to sense events, is of importance. How to schedule minimum number of mobile sensors to achieve the sweep coverage within specified sweep period is a challenging problem, especially when the POIs to be scanned exceeds certain scale and the speed of mobile sensor is limited. Therefore,...
In the fields of deployments in wireless sensor networks, the method of stationary sensor nodes deployed in the area has already been done extensively. However, in a multilayer wireless sensor network, the deployment and movement control strategy for mobile nodes was done little. To guarantee the reliability of the data transmission, this paper proposes a virtual grid partition deployment method,...
Any unidentified malicious nodes in the network could send faulty anomaly and intrusion claims about the legitimate nodes to the other nodes. Verifying the validity of such claims is a critical and challenging issue that is not considered in existing cooperative-based distributed anomaly and intrusion detection schemes of wireless sensor networks. In this paper, we propose a validation algorithm that...
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