ONU-based Decentralized Dynamic Bandwidth Allocation (OD-DBA) scheme over WDM long-reach EPONs

Hui Tang Lin, Chia Lin Lai, Yu Ying Kao, Tzy Shiah Wang

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

摘要

Long-Reach Ethernet Passive Optical Networks (LR-EPONs) have become a promising broadband access technology due to cost-effectiveness and the ability to simplify Metropolitan Area Network (MAN) and Local Area Network (LAN) architectures. However, the increased propagation delay has led increased idle time for interleaved-based Dynamic Bandwidth Allocation schemes resulting in poor bandwidth utilization. This is because previously proposed DBA schemes used the conventional report-grant mechanism where the Optical Network Units (ONUs) report the required information to the Optical Line Terminal (OLT), and the OLT schedules and grants the transmissions after receiving this information. Conversely, since the LR-EPON is designed for covering a wider area, i.e., serving more end users, the bandwidth of single-channel LR-EPON is insufficient to accommodate the bandwidth demand of the increased number of the end users. Therefore, in order to resolve the above problems, the current study proposes a DBA scheme, namely ONU-based Decentralized DBA (OD-DBA) over a Wavelength Division Multiplexing (WDM) LR-EPON. In this scheduling scheme, the current study uses an Array Waveguide Grating (AWG) module to enable decentralized scheduling among all ONUs. In this manner, network utilization will not be restricted by the increased propagation delay. Finally, computer simulations are performed to compare with existing DBA schemes to verify the effectiveness and efficiency of the proposed OD-DBA scheme.

原文English
主出版物標題30th International Conference on Information Networking, ICOIN 2016
發行者IEEE Computer Society
頁面226-231
頁數6
ISBN(電子)9781509017249
DOIs
出版狀態Published - 2016 三月 7
事件30th International Conference on Information Networking, ICOIN 2016 - Kota Kinabalu, Malaysia
持續時間: 2016 一月 132016 一月 15

出版系列

名字International Conference on Information Networking
2016-March
ISSN(列印)1976-7684

Other

Other30th International Conference on Information Networking, ICOIN 2016
國家/地區Malaysia
城市Kota Kinabalu
期間16-01-1316-01-15

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信
  • 資訊系統

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