WSN  Vol.1 No.5 , December 2009
Target Tracking with QoS Support in Large Wireless Sensor Networks
Quality of Service (QoS) is important in the application of target tracking in wireless sensor networks (WSNs). When a target appears, it will trigger an event from one or more sensors. A target can only be accurately detected if a certain number of event packets are received by the sink in a predetermined detection time interval. In this paper, we propose a buffer management scheme based on event ordering to achieve QoS. We also propose a directional QoS-aware routing protocol (DQRP) for the dissemination of the event ordering list. After the dissemination, a priority queue buffer management scheme is used to ensure QoS. Our buffer management scheme works in conjunction with DQRP to ensure accurate as well as energy-efficient target detection in the presence of multiple targets. The novelty of our network architecture is that a distributed admission control scheme is implemented on each node based on a geographic routing algorithm. In our scenario, a target can only be accurately detected if a certain number of event packets are received by the sink in a predetermined detection time interval. Our main performance metric is the number of targets/events being detected. Our protocol maximizes the number of targets being detected.

Cite this paper
nullG. SHIRAZI, P. WANG, X. DONG and C. THAM, "Target Tracking with QoS Support in Large Wireless Sensor Networks," Wireless Sensor Network, Vol. 1 No. 5, 2009, pp. 370-382. doi: 10.4236/wsn.2009.15046.
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