| 一种无线传感器网络环境下的查询路由与负载均衡机制 |
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| 引用本文： | 徐 明,刘广钟. 一种无线传感器网络环境下的查询路由与负载均衡机制[J]. 计算机应用研究, 2013, 30(1): 241-245 |
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| 作者姓名： | 徐 明 刘广钟 |
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| 作者单位： | 1. 上海海事大学 信息工程学院, 上海 201306; 2. 上海市智能信息处理重点实验室, 上海200433 |
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| 基金项目： | 国家自然科学基金资助项目（61202370）; 上海市科学技术委员会浦江人才计划资助项目（11PJ1404300）; 上海市教委科研创新重点资助项目（12ZZ151）; 上海市智能信息处理重点实验室开放课题（IIPL-2011-008）; 上海海事大学科研基金资助项目（20110049） |
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| 摘 要： | 针对无线传感器网络节点数量多、通信距离短、能量有限的特点,提出一种查询增益路由算法以及基于路由的负载均衡机制。查询增益路由算法通过查询增益矩阵维护路由信息,并依据历史查询成功记录来选取路由节点;而基于路由的负载均衡机制可以在查询路由过程中记录节点的能量信息,转移负载,使得查询路径中各节点的能量消耗得到均衡。仿真实验结果表明,查询增益路由算法可以在降低节点能量消耗的前提下提高查询成功率,而基于路由的负载均衡机制可以进一步降低查询增益路由算法的能量消耗。
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| 关 键 词： | 无线传感器网络 查询路由 负载均衡 能量消耗 |
Query routing and loading balancing mechanism in wireless sensor networks |
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| XU Ming,LIU Guang-zhong. Query routing and loading balancing mechanism in wireless sensor networks[J]. Application Research of Computers, 2013, 30(1): 241-245 |
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| Authors: | XU Ming LIU Guang-zhong |
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| Affiliation: | 1. College of Information Engineering, Shanghai Maritime University, Shanghai 201306, China; 2. Shanghai Key Laboratory of Intelligent Information Processing, Shanghai 200433, China |
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| Abstract: | WSNs have many features, such as a majority of nodes, short communication range and limited energy. This paper presented a query gain routing QGR algorithm and routing-based load balancing mechanism. QGR algorithm maintained routing information through query gain matrix, and chose routing nodes according to the successful historic query records, while the routing-based load balancing mechanism stored nodes' energy information during the process of query routing. Simulation results show that QGR algorithm achieves relatively high query hit rate with low energy consumption, and routing-based load balancing mechanism further reduces energy consumption in terms of load transfer efficiency of QGR. |
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