Alleviation of Downstream Impediments of a Passive Optical Network through Implementation of a Distributed Architecture
نویسندگان
چکیده
In this work, we examine the downstream impediments of centralized Ethernet passive optical networks supporting LAN emulation [inter-Optical Network Units communication(ONU)]. The available downstream bandwidth in the centralized scheme is reduced due to LAN emulation and upstream bandwidth allocation functions. The reduction in available downstream bandwidth results in degraded downstream performance. To address this problem, we implement a LAN capable distributed ring architecture, where Optical Line Terminal is relieved from the burden of upstream bandwidth allocation and inter-ONU communication. Consequently, this increases the available downstream bandwidth and thereby enhancing downstream performance in terms of queuing delay, utilization, and packet loss ratio. Keywords— Distributed Network, Passive Optical Network (PON), Ethernet PON, Access Network, Dynamic Bandwidth Allocation.
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