【作者】 王立凯； 高宏； 李建中； 石胜飞；

【Author】 Wang Likai,Gao Hong,Li Jianzhong,and Shi Shengfei (School of Computer Science and Technology,Harbin Institute of Technology,Harbin 150001)

【机构】 哈尔滨工业大学计算机科学与技术学院；

【摘要】 在无线传感器网络环境中,观察者感兴趣的往往是某个地理区域的统计信息.观察者会经常提出与区域相关的查询,例如:"区域A的平均温度是多少","区域B中的哪些区域的温度在20～30℃之间."由于每个传感器节点只有有限的能量,因此,研究能量有效性的区域查询算法成为一个重要的研究课题.给出了一种无线传感网络中基于聚类索引的区域查询处理方法,并进行了分析和实验,证明该算法无论在存储还是在查询时消耗的能量都很小,大约是DIFS的1/7,从而延长整个传感器网络的生命周期.更多还原

【Abstract】 In wireless sensor networks,observers are interested in statistic information monitored by sensors.They often issue range queries such as"What is the average temperature in range A","Which range’s average temperature is between 20 and 30 in range B".Since battery supply of sensors is limited, energy-efficient range query processing in sensor networks becomes an important research problem. Presented in this paper is a method of clustering index for range query in sensor network(CIRQS). Experiments show that this method costs less energy than DISF in both storage and query.Thus,the wireless sensor network can work longer.更多还原