Time synchronization over ethernet passive optical networks

Author

Luo, Yuanqiu ; Effenberger, Frank J. ; Ansari, Nirwan

Volume

50

Issue

10

fYear

2012

fDate

10/1/2012 12:00:00 AM

Firstpage

136

Lastpage

142

Abstract

Time synchronization is critical when using Ethernet passive optical networks as a mobile backhaul to support time-sensitive services. This article presents an overview of time synchronization methods over EPON. It outlines the requirements and challenges particular to the EPON link delay asymmetry, and presents the technical solution recently approved by IEEE. Performance analysis and prototype results demonstrate that this technical solution meets various time synchronization requirements. The article then reviews the major standard efforts on EPON time synchronization that employ this solution, IEEE Std 802.1AS^TM-2011 Clause 13. With this standard in place, EPON can play its part in time distribution networks.

Keywords

IEEE standards; delays; local area networks; passive optical networks; synchronisation; EPON; EPON time synchronization; Ethernet passive optical networks; IEEE; IEEE Std 802.1ASTM-2011 Clause 13; performance analysis; technical solution; time distribution networks; time synchronization methods; time synchronization requirements; time-sensitive services; EPON; Ethernet; IEEE 802.3 Standards; Mobile communication; Optical network units; Passive optical networks; Radiation detectors; Synchronization;

fLanguage

English

Journal_Title

Communications Magazine, IEEE

Publisher

ieee

ISSN

0163-6804

Type

jour

DOI

10.1109/MCOM.2012.6316787

Filename

6316787