QUALİTY OF SERVİCE AND SECURİTY CONTROL FOR CLUSTER-BASED WİRELESS SENSOR NETWORKS
Emrah Tomur · DergiPark (Istanbul University) · 2008
In this study, we investigate security and quality of service (QoS) issues in clusterbased wireless sensor networks (WSN).Our QoS definition consists of four attributes, which are spatial resolution, coverage, network lifetime and packet collisions.And, the security scope of our study is limited by message integrity and authentication.We present a novel control strategy to maintain desired QoS and security levels during the entire operation of a cluster-based sensor network.Compared to our previous work [1], the proposed method provides much better results for three of the four service quality attributes.This study also presents a method for determining the best tradeoff between security and spatial resolution for cases where network capacity is not sufficient to support required security and resolution levels.This method is based on a heuristic algorithm that we developed to solve an optimization problem.