关键词: 信息处理技术, 无线传感器网络, 目标查询, 跟踪链, 查询代价

Abstract: Refering to problems of direct query, a tracking-chain based mobile target query scheme is proposed. The tracking chain is firstly defined as a bi-directional chain consisting of the sensor nodes on the target route and reserving the target spatio-temporal information. The method to build the tracking chain and to query the target with the tracking chain is presented. The target query cost based on tracking chain is also analyzed theoretically. The simulated results show that, the proposed scheme has fewer searching hops and lower failure probability than the direct query, and consumes less energy than the tracking-tree based query scheme as the target query frequency is lower or the target movement frequency is higher.

Key words: information processing, wireless sensor network, target query, tracking chain, query cost