Concealing of the base station's location for preserving privacy in Wireless Sensor Network by mitigating traffic patterns

Abstract

A Wireless Sensor Network (WSN) actually consists of a huge amount of small and tiny individual sensor nodes which are well capable of sensing and collecting data samples from the environment and are treated as the information source. These sensor nodes helps in monitoring physical or environmental conditions and also pass their data samples to the main location through the network. In wireless sensor networks the central point of failure is a base station which collects data from several intermediate nodes. But problem occurs when these intermediate nodes fail to forward the data to the destination node. Attacker examines the packet traffic and can easily reach the base station to destroy it thereby rendering the entire sensor network inoperative. In this paper the proposed privacy preservation mechanism mainly focuses on mInImIZIng the energy consumption thereby increasing the network life time and hence reduces the communication overhead in the network as a whole.Hence our proposed scheme involves generation of fake packets by the nodes considering remaining energy of each node.

Traffic Analysis Through Spatial and Temporal Correlation: Threat and Countermeasure

“…Quite a few published studies, e.g. [15][22] [24][63]- [66], have used fake/deceptive packets as a means for disturbing the spatial correlation of packets and boosting the BS anonymity. Unlike these approaches, AD targets both spatial and temporal correlation of intercepted data packets by coordinating the times at which deceptive packets are transmitted.…”

“…For example, the designer may decide that any nodes with level less than should not participate in deceptive packet generation in order to avoid shortening their lifetime. Published studies like [22][64]- [66] have shown that injecting a high number of deceptive packets in areas with low traffic density would vary the traffic patterns and boost the anonymity of the BS. Similarly, AD allows fine tuning of the number of deceptive packets that a node in a certain level generates.…”