关键词传感器网络感知数据数据查询分布式语义相似度 I 无线传感器网络分布式数据查询处理机制的研究与设计 ABSTRACT It is mon work manner for Wireless works (WSNs) that, first of all, having lots of sensors distributed in a certain zone supervised, then, routing the meta data to the base station with certain routing protocol. Then users can retrieve data they need. So, it is another hot research point of WSNs to offer an efficient data query processing system for users. Aspects related with query processing were analyzed in this paper. They were data storage technology, centralize query processing algorithm and decentralized query processing algorithm and data fusion technology. Among these, centralized query processing and decentralize processing algorithm was given special study and analysis. The main idea of decentralized query processing algorithm is that, divide nodes into several zones, then parse and optimize queries at cluster headers. Cluster headers may aggregate metadata in the course of collection. Aggregated data is transported to base station at last. Two specific decentralized algorithms — Distributed Query Processing Algorithm based on Spatial