Effect of Clock Skew in Event Driven, Delay Constrained Heterogeneous WSN with Anycast

Effect of Clock Skew in Event Driven, Delay Constrained Heterogeneous WSN with Anycast In time critical event driven data gathering, anycasting technique is considered as one of the best methods that minimizes delay and maximizes lifetime. Moreover, asynchronous sleep/wake scheduling techniques like anycasting, is energy efficient compared to synchronous sleep/wake scheduling in rare event detection. However, asynchronous techniques incur additional delay during the event reporting as a result of the clock skew which may violate the delay constraint for a large number of packets. In this paper, we find the critical wake-up rate to constrain the increase in end-to-end delay, as a result of clock-skew, within given delay constraint $$\xi$$ ξ , by estimating the expected increase in end-to-end delay using a stochastic approach. We verify our mathematical analysis using Monte-carlo simulation. Further simulation results in network simulator 2.34 (ns2) confirm the effectiveness of our approach. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Wireless Personal Communications Springer Journals

Effect of Clock Skew in Event Driven, Delay Constrained Heterogeneous WSN with Anycast

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC
Subject
Engineering; Communications Engineering, Networks; Signal,Image and Speech Processing; Computer Communication Networks
ISSN
0929-6212
eISSN
1572-834X
D.O.I.
10.1007/s11277-017-4760-8
Publisher site
See Article on Publisher Site

Abstract

In time critical event driven data gathering, anycasting technique is considered as one of the best methods that minimizes delay and maximizes lifetime. Moreover, asynchronous sleep/wake scheduling techniques like anycasting, is energy efficient compared to synchronous sleep/wake scheduling in rare event detection. However, asynchronous techniques incur additional delay during the event reporting as a result of the clock skew which may violate the delay constraint for a large number of packets. In this paper, we find the critical wake-up rate to constrain the increase in end-to-end delay, as a result of clock-skew, within given delay constraint $$\xi$$ ξ , by estimating the expected increase in end-to-end delay using a stochastic approach. We verify our mathematical analysis using Monte-carlo simulation. Further simulation results in network simulator 2.34 (ns2) confirm the effectiveness of our approach.

Journal

Wireless Personal CommunicationsSpringer Journals

Published: Aug 12, 2017

References

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