Authors: Nurcan Tezcan, Wenye Wang
Addresses: Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27695, USA. ' Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27695, USA
Abstract: Existing solutions for reliable data transmission in wireless networks are aimed to offer reliable message or per transport segment delivery. However, densely deployed sensor nodes can generate many redundant messages that essentially indicate the same event from the area of interest, thus this message-level reliability can pose significantly high and unnecessary communication overhead. In this paper, we address the reliability problem by defining event reliability and query reliability to reduce extra cost of reliable transport services. Unlike other studies on transport protocols for Wireless Sensor Networks (WSN), we consider event delivery in conjunction with query delivery. For the purpose, we propose an energy-aware sensor classification algorithm to construct a network topology that is composed of sensors in providing desired level of event and query reliability. We evaluate the performance of the proposed approach and conclude that significant savings on communication costs are attainable while achieving event and query reliability.
Keywords: reliable query transport; reliable event transport; algorithm design; energy conservation; wireless sensor networks; WSNs; wireless networks; reliable data transmission; message-level reliability.
International Journal of Sensor Networks, 2007 Vol.2 No.3/4, pp.188 - 200
Published online: 11 Apr 2007 *Full-text access for editors Access for subscribers Purchase this article Comment on this article