【作者】 张晓光； 李建中； 李金宝； 张兆功；

【机构】 黑龙江大学计算机科学技术学院； 哈尔滨工业大学计算机科学与技术学院；

【摘要】 <正>1引言随着无线通信技术、微型传感器技术和嵌入式计算技术的飞速发展和不断成熟,具有感知能力、无线通信能力和一定计算能力的低功耗微型传感器在世界范围内出现,对这种传感器以及由这种传感器组成的传感器网络(Sensor net)的应用研究也逐渐成为学术界和工业界关注的焦点。由这种传感器可以通过组成网络来相互协作,实时地监测并获取环境的信息,传送到需要的用户。但传感器网络的应用也受到很多限制。首先,传感器网络是ad更多还原

【Abstract】 With the development of processor,memory and radio technology,networks composed of cheap nodes capable of sensing,communication and computation have become possible.The deployment of such networks can provide a large data source for the monitoring of physical world.In this paper,the on-line analytical processing (OLAP) operation,which has been widely used in traditional data warehouse system,is invited into the sensor network as a new way for users to query and analysis spatial related statistical result of environmental data such as temperature and humidity.The definition of the operation on sensor network is provided in this paper.A data structure to store multi-granularity is provided.The drilldown and rollup operation on this structure is also provided.To accomplish innetwork aggregation and operation transmission,a time scheduling process is provided.更多还原