In brief - Ahead in the polls

24 April 2012

Bandwidth consumption

Multicast polling for 10G-EPON
Electron. Lett. -- 26 April 2012 -- Volume 48, Issue 9, p.513–514

W. Lim (1), Y. Yang (2) and M. Milosavljevic (1)
(1) University of Hertfordshire, Optical Networks Research Group, Hatfield, United Kingdom
(2) Kumoh National Institute of Technology, School of Electronic Engineering, Gumi, Republic of Korea

A multicast polling scheme is proposed for 10G Ethernet passive optical networks (10G-EPONs). In the multicast polling scheme, the GATE message is broadcast to all ONUs with a new op-code of 0007. Comparing the proposed multicasting with the traditional unicasting scheme, the downstream bandwidth consumption for the control packet of the multicast is 0.011% compared with the unicast of 0.11% at the cycle time of 2ms. As a result of the upstream performance, the channel utilisation improves 3% and the saturation offered load of the end-to-end delay for the multicast and the unicast is 0.8 and 0.7, respectively

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