A Sort-Based DBA Algorithm for EPON System


EPON technology is being considered as a promising solution for next-generation broadband access network due to the convergence of low-cost equipments. To prevent data collision and ensure efficient transmission, a MAC protocol to share resource of upstream transmission medium is necessary. This article proposes a sort-based DBA algorithm that sorts all REPORT messages by length to fully utilize the idle time as long as at least one ONU requests a long enough transmission window; or some requests be lain out together in idle period to compensate the idle time when no request length is long enough. Besides, a queue management scheme also be developed, which improves efficiency further by decreasing the overhead of REPORT messages when the ONU queue is long. Event-driven simulations show that sort-based DBA can improve network performance in terms of packet delay, average queue length and throughput, as compared with the well-known IPACT and DBA2 algorithms.

DOI: 10.1109/ISDA.2008.322

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@article{Chen2008ASD, title={A Sort-Based DBA Algorithm for EPON System}, author={Wen-Ping Chen and Shih-Wei Kau and Bin-Yih Liao and Wen-Shyang Hwang and Wen-Tsung Hu}, journal={2008 Eighth International Conference on Intelligent Systems Design and Applications}, year={2008}, volume={2}, pages={223-228} }