| 多媒体传感网中一种基于优化覆盖及压缩代价评估的节能机制 |
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| 引用本文： | 沙超,王汝传,黄海平,孙力娟. 多媒体传感网中一种基于优化覆盖及压缩代价评估的节能机制[J]. 电子学报, 2011, 39(10): 2353-2358 |
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| 作者姓名： | 沙超 王汝传 黄海平 孙力娟 |
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| 作者单位： | 南京邮电大学计算机学院,江苏南京210003;江苏省无线传感网高技术研究重点实验室,江苏南京210003 |
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| 基金项目： | 国家自然科学基金(No.60973139,No.61003039,No.61003236); 江苏省科技支撑计划(工业)项目(No.BE2010197,No.BE2010198); 江苏省级现代服务业发展专项资金; 江苏省高校自然科学基础研究项目(No.10KJB520013,No.10KJB520014); 江苏省计算机信息处理技术重点实验室基金(No.kjs1022) |
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| 摘 要： | 为降低无线多媒体传感网能耗,利用贪婪算法调整节点传感方向,实现优化覆盖并降低了传感开销.同时,对节点数据压缩代价进行评估,使其以最小的能量代价传输数据,并根据多媒体事件流规律,优化网络生存时间.仿真结果表明,本方法在延长网络生存时间方面表现出了较好性能.
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| 关 键 词： | 无线多媒体传感网 能量消耗 贪婪算法 优化覆盖 压缩代价评估 |
| 收稿时间： | 2009-12-18 |
An Energy Saving Strategy Based on Coverage Optimization and Compression Cost Estimation for Wireless Multimedia Sensor Networks |
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| SHA Chao,WANG Ru-chuan,HUANG Hai-ping,SUN Li-juan. An Energy Saving Strategy Based on Coverage Optimization and Compression Cost Estimation for Wireless Multimedia Sensor Networks[J]. Acta Electronica Sinica, 2011, 39(10): 2353-2358 |
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| Authors: | SHA Chao WANG Ru-chuan HUANG Hai-ping SUN Li-juan |
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| Affiliation: | SHA Chao1.2,WANG Ru-chuan1.2,HUANG Hai-ping1.2,SUN Li-juan1.2(1.College of Computer,Nanjing University of Posts and Telecommunications,Nanjing,Jiangsu 210003,China,2.Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks,China) |
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| Abstract: | To reduce energy consumption in wireless multimedia sensor networks,a greedy algorithm about sensing direction adjustment is proposed which enhances network coverage and reduces the sensing overhead.A type of compression cost estimation method is also described to minimize the node's power on transmission and the network lifetime is optimized according to the regularity of multimedia event stream.Simulation results show that this method obtains satisfactory performance on prolonging networks lifetime. |
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| Keywords: | wireless multimedia sensor networks energy consumption greedy algorithm coverage optimization compression cost estimation |
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