Link failure and node failure mitigation techniques in wireless sensor network

Abstract

Wireless sensor network is an event based network and it is different from the existing conventional networks The network may be flat network or cluster network The flat network is not suitable for large number of nodes All the sensor nodes have the same responsibility and role in flat based network But in cluster network they have different responsibility and roles If the network needs best communication even after increasing scalability then the best choice is cluster based network Cluster network gives the maximum life time for network than the flat network architecture A huge number of routing protocols are used for the cluster network Though the cluster network has more advantages the flat network is the best choice wherever the easiest maintenance administration and cost minimization for switches are needed Based on the requirement it has been decided whether to choose flat network or cluster network Link and Node failures are major problems in Wireless Sensor Network WSN which disconnects and makes network partition Four protocols are proposed to address link failure in different aspects First is Sectionary Junction Failure Recovery SJFR Algorithm It will perform local route recovery to minimize data packet loss during link failures The significant feature of this approach is that it does not depend on global positioning information and uses only Received Signal Strength RSTH and hop count Second is Predicting and Recovering Link Failure Localization PRLFL Algorithm Nodes are classified into three groups Based on the location of the failure the algorithm works newline