IEICE Communications Express
Online ISSN : 2187-0136
ISSN-L : 2187-0136
Implementation of Software-based EPON-OLT and Performance Evaluation
Keita NishimotoMasashi TadokoroTakeaki MochidaTakashi YamadaToshikiyo TanakaAkiyuki TakedaTakashi Inoue
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JOURNAL FREE ACCESS Advance online publication

Article ID: 2017XBL0038


In order to meet the diversifying demands, studies related to the virtualization of an optical access NW have become active in the last few years. In this paper, we propose the architecture of the software-based virtual EPON-OLT, where all of OLT functions except PHY-Layer are implemented as software running on an x86 server. The EPON-OLT requires not only high throughput, low latency but also accurate control for the upstream transmission timing of ONUs. In order to satisfy these conditions, we introduced two methods for the virtual OLT: (1) Separation of C-Plane/D-Plane and (2) Smoothing RTT. Evaluation experiments show wire-speed throughput and low latency are achieved when the packet length is short, but simultaneously, a technical issue with long packet transmission.

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© 2017 The Institute of Electronics, Information and Communication Engineers