A Space Query Method for Wireless Sensor Networks
A wireless sensor and cyberspace technology, applied in network topology, wireless communication, advanced technology, etc., can solve the problems of communication transmission interruption, node failure, loss of query results, etc., to maintain connectivity, improve uniformity, and reduce information transmission. The effect of energy consumption
Inactive Publication Date: 2018-04-03
JIANGSU UNIV
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However, this method also has two problems in special cases: (1) If the remaining energy of the node on the query route is too low, the node will fail and the query result will be lost; (2) When the message is transmitted, the adjacent nodes are far away, which will lead to Communication transmission interrupted
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The invention discloses a wireless sensor network spatial query method. According to the method, an effective query path is selected according to residual energy of nodes and connectivity between the nodes firstly, then subquery nodes are selected according to maximum residual energy to share the information collection and processing task so that energy consumption of the nodes on the query path can be further reduced, and finally, a query message is sent by passing through the blank areas between the nodes by means of a position routing protocol so that the connectivity of the query path can be maintained and the success rate of query can be increased. It can be learned through simulation comparison between an improved EIWQE algorithm put forward and an IWQE algorithm that the success rate of query, the coverage of query and the evenness of energy consumption of the nodes are all improved greatly.
Description
A Space Query Method for Wireless Sensor Networks technical field The invention belongs to the technical field of computer network applications, and in particular relates to a query method for a wireless sensor network space based on an improved algorithm. Background technique A wireless sensor network consists of nodes that sense, store and communicate environmental data. The so-called spatial query technology of wireless sensor network is to query and process the environmental information in an area according to a certain strategy. In environments such as forests and battlefields, it is difficult to replenish node energy due to conditions, and some factors cause excessive energy consumption of some nodes. Saving and balancing node energy consumption has become a problem to be solved by spatial query technology. Currently, a tree-based spatio-temporal aggregation query processing algorithm has been proposed (Chen B, LiangW, Zhou R, et al. Energy-efficient top-k query pr...
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IPC IPC(8): H04W40/10H04W40/22H04W52/02H04W84/18
CPCY02D30/70
Inventor 周莲英蒋大飞郭远喻志浩夏凡
Owner JIANGSU UNIV