Abstract
In an on-road environment, motor-engines severely disturb the wireless link of a sensor node, leading to high package loss rate, high delivery delay, and poor radio communication quality. The existing data delivery mechanisms, such as the ACK-based retransmission mechanism and window-based link quality estimation mechanism, could not handle these challenges well. To solve this challenge, we propose a Target-Prediction-based Link quality Estimation scheme (TPLE) to realize high quality data delivery in an on-road environment. To perform on-road link quality estimation, TPLE dynamically calculates the track of a nearby vehicle target and estimates target impact on wireless link. Based on the local estimation of link quality, TPLE schedules radio communication tasks effectively. Simulations indicate that our proposed TPLE scheme produces a 94% data delivery rate, its average retransmission number is around 0.8. Our conducted on-road data delivery experiments also indicated a similar result as the computer simulation.
Highlights
Traffic monitoring is an important part of modern city administration
We argue that in an on-road traffic of reliable time and low-delay environment, the link quality cannot be described by existing link models
We argue that in an on-road traffic environment referred, the running cause disruption to wireless links, especially the environment, radio the link link quality besensor described byFrom existing from the(c), normal factors that used cannot in wireless networks
Summary
Traffic monitoring is an important part of modern city administration. Real-time road traffic data helps improve transportation efficiency [1], such as road information broadcast and real time weather publication. We argue that in an on-road traffic environment referred, the running cause disruption to wireless links, especially the environment, radio the link link quality besensor described byFrom existing from the(c), normal factors that used cannot in wireless networks. Influencealmost link quality, such as background noises, etc., an on-road traffic environment is referred, In this paper, focus on the reliabilitylinks, of on-road data delivery, welink have proposed and sensor the running vehicles causewe disruption to wireless especially the radio used in wireless implemented a reliable data transmission scheme, called TPLE, which can conduct node data networks. We developed a real-time application to verify our proposed scheme; our system cancaused be applied in pervasive on-road data collection With this scheme, we obtain relatively high radio communication quality with the acceptable cost of time delay with respect to data delivery. We developed a real-time application to verify our proposed scheme; our system can be applied in pervasive on-road data collection
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