| Summary: | 碩士 === 元智大學 === 資訊工程學系 === 104 === Ethernet passive optical network (EPON) is one of the convenient application for the next generation network. It can use from Fiber-To-The-Home (FTTH), FTTB (building) and FTTO (office). Thus, it’s important to keep the protection on device link, otherwise it will cause a great loss for both network operators and customers. Therefore, in this paper, we propose Bus-connected architecture to protect and recovery Drop Distribution Fiber (DDF) link faults or transceiver failure at the ONU(s) in EPON system. In the proposed architecture, when fault occurs, the ONU will switch the working line to the protection line and sends the essential alarm event to the backup ONU then to the OLT via Bus-connected architecture. For this reason, when failure occurs, the ONU can still transmit and receive data through the backup ONU. Simulation results show that our proposed architecture can maintain quality of service (Qos) performance in terms of mean packet delay, system throughput, packet loss and EF jitter.
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