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Data aggregation can reduce the communication cost, thereby extending the lifetime of sensor networks. One key issue in structure monitoring is data aggregation. The sensors are typically sampled at high frequencies, producing large amounts of data; limited network resources make acquiring and processing this data quite challenging. In this paper, we propose an novel data aggregation scheme in WSNs...
We study the unique trust management, and more precisely reputation management and revocation of malicious ad hoc nodes used for emergency communications.Unlike in centralized systems, reputation management and revocation in ad hoc networks is non-trivial. This difficulty is due to the fact that the nodes have to collaboratively calculate the reputation value of a particular node and then revoke the...
Wireless sensor networks consisting of spatially distributed autonomous devices required to survive in unprotected environments. They are always susceptible to attack by malicious behavior of its routers (nodes) or external enemy nodes which could negatively affect secured routing and QoS and hence, vital wireless multimedia applications. In recent times, a lot of specific severe attacks have been...
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