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Increasing a functional lifetime of a network is utmost important criterion in Wireless Sensor Networks (WSNs) because of limited energy resource of nodes. Since, a functional lifetime requires either all or a certain percentage of nodes to be alive altogether, energy consumption balancing is important. Energy consumption balancing (ECB) property ensures that the average energy dissipation per sensor...
Mobile sensor nodes should be well deployed so that they maximize the area coverage with the constraint that each node has at least K neighbours, where is a user-specified parameter. The MSNS (mobile sensor node simulator) designed in this paper visualizes the real map objects created by a GML, and the movement of each sensor node which autonomously extends the constrained coverage introduced by....
In dense radio frequency identification (RFID) system, reader collision problem is bottleneck of overall system performance. In this paper we propose a distributed multi-channel reader anti-collision MAC (ACMAC) protocol to mitigate the reader collision problem. The proposed probability based channel selection approach helps selecting channel efficiently and reduces the waiting time and beaconing...
In dense reader RFID system, a number of readers in the same interrogation area want to access the channel at the same time suffer from reader collision problem. In this paper, we propose a distributed reader anti-collision MAC protocol (RAMP) for dense reader environment. We extended the pulse protocol by adding multiple data channels and the channel hopping algorithm. The channel hopping algorithm...
As services utilizing USN increases, various simulators that virtually enables sensor network have been developed. This paper suggests MOUL framework - a framework that provides status information of sensor network with mobile object - which is different from existing frameworks that use simulators to verify packets, protocols, and networks models. MOUL calculates sensing rates of different sensor...
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