Performance Evaluation of an Adaptive Collision Avoidance Algorithm for IEEE 802.15.4 


Vol. 36,  No. 3, pp. 267-277, Mar.  2011


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  Abstract

Like other wireless network protocols, IEEE 802.15.4 adopts CA (Collision Avoidance)algorithm to avoid the early collision of a new packet by randomizing its first transmission time rather than its immediate delivery. The traditional CA scheme of IEEE 802.15.4, however, selects the random access time from the predetermined range without considering the degree of current congestion. It probably causes either a long delay to settle in the suitable range for the current network load or frequent clashes especially during the long lasting heavy traffic period. This paper proposes an ACA(Adaptive Collision Avoidance) algorithm adapting the initial backoff range to the undergoing collision variations. It also introduces a mathematical model to predict the performance of ACA algorithm added to IEEE 802.15.4. With only small deviations from corresponding simulations, our analytical model shows that ACA technique can improve the throughput of IEEE 802.15.4 by up-to 41% maximally in addition to shortening the packet delays.

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  Cite this article

[IEEE Style]

K. Noh, S. Lee, Y. Shin, J. Ahn, K. Lee, "Performance Evaluation of an Adaptive Collision Avoidance Algorithm for IEEE 802.15.4," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 3, pp. 267-277, 2011. DOI: .

[ACM Style]

Ki-Chul Noh, Seung-Yeon Lee, Youn-Soon Shin, Jong-Suk Ahn, and Kang-Woo Lee. 2011. Performance Evaluation of an Adaptive Collision Avoidance Algorithm for IEEE 802.15.4. The Journal of Korean Institute of Communications and Information Sciences, 36, 3, (2011), 267-277. DOI: .

[KICS Style]

Ki-Chul Noh, Seung-Yeon Lee, Youn-Soon Shin, Jong-Suk Ahn, Kang-Woo Lee, "Performance Evaluation of an Adaptive Collision Avoidance Algorithm for IEEE 802.15.4," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 3, pp. 267-277, 3. 2011.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880