Fault tolerance and security mechanisms in wireless sensor networks

Abstract

Fault tolerance and security are two prominent issues in WSNs that involve fault newlinedetection and fault tolerance in WSNs detecting noncompromised nodes and securely newlinetransmitting the data from source to sink through these faultfree non compromised nodes newlineWSNs composed of large number of tiny sensor nodes equipped with limited computing and newlinecommunication capabilities Since low cost sensor nodes are often deployed in an uncontrolled or even harsh environment they are prone to have faults It is essential to detect locate the faulty sensor nodes and exclude them from the network for transmitting the data Security is becoming a major concern for WSN protocol designers because of wide security critical application evesdropping because of wireless communication nature deployed in harsh environment and limited resources newline newline