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

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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 \(\xi\), 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.

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Authors and Affiliations

  1. Department of Computer Science and Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, India

    Debanjan Sadhukhan & Seela Veerabhadreswara Rao

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  1. Debanjan Sadhukhan
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  2. Seela Veerabhadreswara Rao
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Correspondence to Debanjan Sadhukhan.

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Sadhukhan, D., Rao, S.V. Effect of Clock Skew in Event Driven, Delay Constrained Heterogeneous WSN with Anycast. Wireless Pers Commun 97, 4967–4980 (2017). https://doi.org/10.1007/s11277-017-4760-8

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