Diversity DBA Technique for Fairly Handling Various Types of EPON ONU

Murayama, Daisuke; Oota, Noriyuki; Suzuki, Keisuke; Yoshimoto, Naoto

doi:10.1109/icc.2011.5962437

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…However, DBA has a large impact on quality of service (QoS) because there is a tradeoff relationship between bandwidth efficiency and latency [10][11][12][13]. In an EPON, OLTs and ONUs exchange Ethernet frames of various lengths.…”

Section: B Dba For Eponsmentioning

confidence: 99%

Low-Latency Dynamic Bandwidth Allocation for 100 km Long-Reach EPONs

Murayama

Oota

Suzuki

et al. 2012

J. Opt. Commun. Netw.

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We propose a new dynamic bandwidth allocation (DBA) method for long-reach passive optical networks that can reduce the upstream latency. With this method, an optical line terminal allocates bandwidth to long-distance (up to 100 km) optical network units (ONUs) with a transmission request prediction and reduces the latency of the long-distance ONUs. This has no influence on the latency of short-distance ONUs even if they coexist with long-distance ONUs. The results of real machine experiments show that this new DBA method achieves a smaller latency with long-distance ONUs than the conventional DBA technique, and that there is no influence on short-distance ONUs. The latency time and jitter are kept below 1300 µs and 1000 µs, respectively, for both long-and short-distance ONUs. The experimental results also reveal the effect of the proposed method on bandwidth utilization efficiency and fairness. The degradation in bandwidth utilization efficiency when one long-distance ONU is added is small (0.3%), and the fairness index degradation is negligible (less than 0.1%), when the parameters are optimized. These results indicate the validity of the proposed DBA method.

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Section: B Dba For Eponsmentioning

confidence: 99%