A Grid-based Geographic Hash Table Data Dissemination Algorithm of Wireless Sensor Networks
一种基于网格地理哈希表的无线传感器网络数据分发算法

The Wireless Sensor Network(WSN or WSNs)is a new type of data monitoring network.One important characteristic of the WSNs is it is highly energy-constraint and powered by batteries.The most important design ele- ments is the energy-efficiency.The GHT-DCS is an energy-efficient data storage method for the WSNs and achieves the balance between data querying and storage.But the DCS scheme based on the GHT still has some space to improve.In this paper a Grid-based GHT(GGHT)data dissemination algorithm is proposed and is also a type of DCS data dissemi- nation method,and again on this basis a new index-based GGHT(I-GGHT)data dissemination algorithm is proposed. The performance analysis of the two algorithms are given and compared to the original GHT algorithm they can im- prove the energy-efficiency and the complexity of the algorithm has not been increased much,so the GGHT and I- GGHT are two energy-efficient data dissemination algorithms for the WSNs.