Software Techniques for Maximizing Network Functionality in Duty Cycle Restricted ISM Bands

In this paper, a technique is presented which allows users of license free ISM bands to increase functionality of the wireless network while remaining within the maximum legally allowed transmit duty cycle requirements. The researchers show through analytical modeling and empirical evaluation, that...

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Bibliographic Details
Published in:Sensors & transducers 2013-12, Vol.161 (12), p.472-472
Main Authors: O'Connell, Eoin, Cionca, Victor, O'Flynn, Brendan
Format: Article
Language:English
Subjects:
Bands
Empirical analysis
Hardware reviews
Laser printers
Legal
Licenses
Networks
Product introduction
Remote sensors
Sensors
Wireless networks
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Summary:In this paper, a technique is presented which allows users of license free ISM bands to increase functionality of the wireless network while remaining within the maximum legally allowed transmit duty cycle requirements. The researchers show through analytical modeling and empirical evaluation, that traditional MAC and muting techniques result in a significant increase in the overall TX duty cycle when sensor sample frequencies are increased. Specifically, they focus on the 868 MHz ISM band where the maximum allowed legal TX duty cycle must be < 1%. Two novel techniques are presented that significantly reduce the TX duty cycle. The result of implementing these techniques is a reduction in power consumption and more importantly, an increase in network functionality while remaining within the legal requirements. They show that these techniques allow sensor readings to be collected far more frequently in multi-hop, receiver duty cycled, wireless sensor networks. Results from a 50 node deployment are also presented to validate the model with empirical results.
ISSN:2306-8515
1726-5479
1726-5479