| 摘要: |
| 研究了节点无移动能力的静态传感器网络中的栅栏覆盖问题.考虑在传感器节点具有有限移动能力时,如何构建k-栅栏覆盖的问题:首先定义了1-栅栏覆盖最小移动距离和问题(1-barrier coverage min-sum of movingdistance,简称1-BCMS).在网格划分模型情况下,将1-BCMS 问题近似为1-网格栅栏最小移动距离和问题(1-gridbarrier min-sum of moving distance,简称1-GBMS).给出了1-GBMS 问题的整数线性规划描述, |
| 关键词: 移动无线传感器网络 栅栏覆盖 重部署 |
| DOI：10.3724/SP.J.1001.2011.03877 |
| 分类号: |
| 基金项目:国家自然科学基金(60603061, 60603064, 60903223) |
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| Constructing k-Barrier Coverage in Mobile Wireless Sensor Networks |
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BAN Dong-Song1, WEN Jun2, JIANG Jie1, DOU Wen-Hua1
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1.College of Computer, National University of Defense Technology, Changsha 410073, China;2.The 63rd Research Institute of General Staff, PLA University of Science and Technology, Nanjing 210007, China
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| Abstract: |
| This paper focuses on the energy efficient construction of a k-barrier coverage in mobile sensor networks. First, this paper formulates 1-BCMS (1-barrier coverage min-sum of moving distance) problem for constructing 1-barrier coverage energy efficiently, reduces the 1-BCMS problem to 1-GBMS (1-grid barrier min-sum of moving distance) problem based on grid model, and present the reduced problem’s Linear Programming Model and prove it to be NP-hard. Secondly, this paper presents a CBGB (constructing baseline grid barrier) algorithm to construct 1-barrier coverage energy efficiently. CBGB is an approximation algorithm for 1-GBMS problem and the solution of CBGB is close to the optimal solution. Finally, a Divide-and-Conquer algorithm is proposed to construct k-barrier coverage. This algorithm significantly reduces communication overhead and computation cost compared to other algorithms. Simulation demonstrates the effectiveness of the proposed algorithm in constructing k-barrier coverage. |
| Key words: mobile wireless sensor networks barrier coverage relocation |
