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    题名: Mobile Sensor Relocation Problem: Finding the Optimal (Nearest) Redundant Sensor with Low Message Overhead
    作者: Cheng, Chien-Fu;Huang, Chih-Wei;Li, Lung-Hao
    关键词: Mobile wireless sensor networks;Mobile sensor;Sensor failure;Sensor relocation problem;Optimal (nearest) redundant sensor;Low message overhead
    日期: 2015-11
    上传时间: 2016-04-22 13:42:15 (UTC+8)
    摘要: In the sensor relocation (SR) problem, advertisement packets are used to inform the locations of redundant sensors and request packets are used to inform the locations of requesting places. When redundant sensors move to requesting places, their location information will change. So, the message with redundant sensors information is not reusable. This is also why locating redundant sensors with low message overhead is of high importance. In this paper, we revisit the matching problem of SR in mobile wireless sensor networks. In order to reduce the amount of message exchange, we employ the concept of quorum to send advertisement packets (in columns) and request packets (in rows). With the proposed stopping criteria, the proposed algorithm can further reduce the amount of these two types of packets to send. In performance evaluation, we consider three scenarios of different shapes, including a square plane, a rectangular plane and a circle plane. The simulation results show that the proposed algorithm can effectively and significantly reduce the number of advertisement and request packets to find the optimal (nearest) redundant sensor for each requesting place.
    關聯: Computer Networks 91, pp.407-424
    DOI: 10.1016/j.comnet.2015.08.022
    显示于类别:[資訊工程學系暨研究所] 期刊論文

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