Adaptive Contention Window Mechanism for Enhancing Throughput in HomePlug AV Networks 


Vol. 33,  No. 5, pp. 318-325, May  2008


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  Abstract

HomePlug AV (HPAV) is the standard for distribution of Audio/Video content as well as data within the home by using the power line. It uses a hybrid access mechanism that combines TDMA with CSMA/CA for MAC technology. The CSMA/CA protocol in HPAV has two main control knobs that can be used for access control: contention window (CW) size and deferral counter (DC). In this paper, we extensively investigate the impacts of CW and DC on performance through simulations, and propose an adaptive mechanism that adjusts the CW size to enhance the throughput in HPAV MAC. We find that the CW size is more influential on performance than the DC. Therefore, to make controlling the network easier, our proposal uses a default value of DC and adjusts the CW size. Our scheme simply increases or decreases the CW size if the network is too busy or too idle, respectively. We compare the performance of our proposal with those of the standard and other competitive schemes in terms of throughput and fairness. Our simulation and analysis results show that our adaptive CW mechanism performs very well under various scenarios.

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  Cite this article

[IEEE Style]

S. Yoon, J. Yun, B. Kim, S. Bahk, "Adaptive Contention Window Mechanism for Enhancing Throughput in HomePlug AV Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 5, pp. 318-325, 2008. DOI: .

[ACM Style]

Sung-Guk Yoon, Jeongkyun Yun, Byungseung Kim, and Saewoong Bahk. 2008. Adaptive Contention Window Mechanism for Enhancing Throughput in HomePlug AV Networks. The Journal of Korean Institute of Communications and Information Sciences, 33, 5, (2008), 318-325. DOI: .

[KICS Style]

Sung-Guk Yoon, Jeongkyun Yun, Byungseung Kim, Saewoong Bahk, "Adaptive Contention Window Mechanism for Enhancing Throughput in HomePlug AV Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 5, pp. 318-325, 5. 2008.