دانلود مقاله ISI انگلیسی شماره 54728
عنوان فارسی مقاله

یک مکانیزم بازیابی مستقل در برابر خطاهای شبکه توزیع نوری در EPON

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
54728 2014 9 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
An autonomous recovery mechanism against optical distribution network failures in EPON
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Optical Fiber Technology, Volume 20, Issue 5, October 2014, Pages 552–560

کلمات کلیدی
کیفیت سرویس - حفاظت خودمختار؛
پیش نمایش مقاله
پیش نمایش مقاله یک مکانیزم بازیابی مستقل در برابر خطاهای شبکه توزیع نوری در EPON

چکیده انگلیسی

Ethernet Passive Optical Network (EPON) is chosen for servicing diverse applications with higher bandwidth and Quality-of-Service (QoS), starting from Fiber-To-The-Home (FTTH), FTTB (business/building) and FTTO (office). Typically, a single OLT can provide services to both residential and business customers on the same Optical Line Terminal (OLT) port; thus, any failures in the system will cause a great loss for both network operators and customers. Network operators are looking for low-cost and high service availability mechanisms that focus on the failures that occur within the drop fiber section because the majority of faults are in this particular section. Therefore, in this paper, we propose an autonomous recovery mechanism that provides protection and recovery against Drop Distribution Fiber (DDF) link faults or transceiver failure at the ONU(s) in EPON systems. In the proposed mechanism, the ONU can automatically detect any signal anomalies in the physical layer or transceiver failure, switching the working line to the protection line and sending the critical event alarm to OLT via its neighbor. Each ONU has a protection line, which is connected to the nearest neighbor ONU, and therefore, when failure occurs, the ONU can still transmit and receive data via the neighbor ONU. Lastly, the Fault Dynamic Bandwidth Allocation for recovery mechanism is presented. Simulation results show that our proposed autonomous recovery mechanism is able to maintain the overall QoS performance in terms of mean packet delay, system throughput, packet loss and EF jitter.

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