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Wireless sensor network coverage optimization approach

Author: ZhuYinYin
Tutor: WuXiaoZuo；HuangCheng
School: Nanjing University of Technology and Engineering
Course: Control Theory and Control Engineering
Keywords: Wireless sensor networks Dormancy mechanisms Reconstructed Wake Mobile
CLC: TN929.5
Type: Master's thesis
Year: 2009
Downloads: 221
Quote: 4
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Abstract


With the rapid development of wireless communication technologies and electronic device technology , low-cost , low-power , multi-functional wireless sensor development and wide application possible . How to achieve optimal coverage , so the network to ensure reliable monitoring of performance is a fundamental problem in wireless sensor networks to extend the network lifetime . Scheduling redundant nodes turns Sleep can effectively extend the network lifetime . In this paper, the network node high density random uniform Dispenser comprehensive wealth of information about wireless sensor networks Sleep algorithm literature based on analysis of several commonly been thought worth learning based on redundant nodes to determine the mechanism of dormancy . For several redundant nodes determine the complexity of the algorithm is too high , elected the work nodes excessive and can not make the boundary node hibernation , Tian D algorithm based on sector coverage based combined the Huang algorithm 's circumference coverage thinking , proposed an improved wireless sensor networks dormancy mechanisms . First redundant spent the first dormant areas of high node density control to a more uniform distribution of the active node ; then determine active nodes in a circular covering redundancy , the network boundary nodes and boundary nodes use different circumferential coverage decision method , so that the boundary nodes and non- boundary nodes get good sleep , reduce network redundancy . Simulation results show that makes network active node on the basis of maintaining the original network coverage , improving the mechanism of dormancy to a smaller number , more evenly distributed network of survival time has been extended . On this basis , the paper discussed the repair coverage for wireless sensor network node failure on the reconstruction of the concept and its key issues . Proposed an adaptive sensor network reconfiguration scheme : when the the dormant node wake-up mechanism , network redundancy node density is high the nodes moving mechanism based on Dijkstra algorithm when the the redundant node density is small . Simulation results show that the reconstruction scheme can better repair node network failure .

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