Optimization of anchor nodes in wireless sensor network

摘要

The aspect for many Wireless Sensor Networks (WSN) based applications is positioning. Owing to the cost constraints, only a limited amount of nodes in the network can know their locations by a variety of positioning mechanisms such as GPS or manual setup mechanism. These nodes are commonly called as anchor nodes, where as other nodes with unknown location information are called non-anchor nodes or static sensor nodes. Anchor nodes are positioned by employing RSS measurements in this proposed method. It plays a major role in the intermediate processing so as to get accurate position of the static sensor nodes. Hence the signals from anchors, used for computation should be accurate as well. Just because RSS is concerned, the deployment of the anchors is a vital issue. To reduce the cost factor the numbers of them has to be optimized. This paper suggests an algorithm for the above purpose.