计算机应用

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基于小世界模型的传感器网络节能查询策略

刘志强 蒋泽军 王丽芳 王珺吉   

  1. 西北工业大学 西北工业大学 西北工业大学 西北工业大学
  • 收稿日期:2007-07-23 修回日期:2007-09-29 发布日期:2008-01-01 出版日期:2008-01-01
  • 通讯作者: 刘志强

Small-world-based energy-efficient query strategy for sensor networks

Zhi-Qiang LIU Ze-Jun JIANG Li-Fang WANG Jun-Ji WANG   

  • Received:2007-07-23 Revised:2007-09-29 Online:2008-01-01 Published:2008-01-01
  • Contact: Zhi-Qiang LIU

摘要: 查询处理是传感器网络中最重要的技术之一。以降低查询能耗为目的,提出了一种基于小世界模型的查询策略(CardSN)。该策略以关联作为长程连接,降低了网络平均路径距离;将各节点的邻居相对定位,使查询处理获得了方向性。仿真实验结果表明:CardSN具有良好的可扩展性,且能耗明显低于ZRP和CAPTURE。

关键词: 查询, 小世界, 关联, 传感器网络

Abstract: Query processing is one of the most important technologies in sensor networks. To reduce energy consumption of query, a small world based query strategy named Contact-Assisted poweR-efficient Direction-sense-achieved query strategy for Sensor Networks (CardSN) was presented. In CardSN, Contacts act as shortcuts to bring down the average path length of the network; a distributed relative localization algorithm was introduced to achieve a sense of direction. Experimental results show that CardSN has good scalability and can save more energy than ZRP and CAPTURE. Therefore, CardSN is of high-performance and energy-efficiency.

Key words: query, Small world, Contact, sensor networks