Security based Clock Synchronization technique in Wireless Sensor Network for Event Driven Measurement Applications

Abstract

In this paper, secure based novel clock synchronization in wireless sensor network for event driven measurement application is proposed with security. The main objectives are 1) To provide high accuracy in the area where an event is detected 2) To ensure long network lifetime 3) To ensure security based packet transmission. The complexity of a problem arises from first two properties that usually in clash. To increase the synchronization accuracy, the nodes are required to transfer synchronization packets at higher rate thus impacting the network lifetime. Vice versa to increase the lifetime of network, number of packet transfer around the nodes should be minimized, thus impacting the synchronization accuracy. A tradeoff can be accomplished by viewing that the packet rate need to be increased only for the part of the network surrounded by events as only those nodes requires high accuracy to collect data. In order to rectify an adversary who aims to tamper with the clock synchronization by intercepting messages, replying to intercept messages and revealing of secret keys, proper authentication needs to be given. Security is provided for packet transmission on a network, resilient to the aforementioned adversarial attacks. The simulation results show the accurate date and time of event occurrence.