Study and Demonstration of Sleep and Adaptive Link Rate Control Mechanisms for Energy Efficient 10G-EPON

Author

Kubo, Ryogo ; Kani, Jun-ichi ; Ujikawa, Hirotaka ; Sakamoto, Takeshi ; Fujimoto, Yukihiro ; Yoshimoto, Naoto ; Hadama, Hisaya

Author_Institution

NTT Access Network Service Syst. Labs., NTT Corp., Yokosuka, Japan

Volume

2

Issue

9

fYear

2010

fDate

9/1/2010 12:00:00 AM

Firstpage

716

Lastpage

729

Abstract

This paper describes sleep and adaptive link rate (ALR) control functions to reduce the power consumption of optical network units (ONUs) in 10 Gb/s Ethernet passive optical network (10G-EPON) systems. A hybrid mechanism that includes both sleep and ALR control functions is proposed with a view to further improving the power-saving performance. The sleep control function switches the ONU mode, i.e., active or sleep, depending on the presence or absence of traffic. The ALR control function switches the downlink rates between an optical line terminal (OLT) and an ONU, i.e., 1 Gb/s or 10 Gb/s, depending on the quantity of traffic. The proposed hybrid mechanism offers effective power management of ONUs on the basis of the traffic conditions. The proposed hybrid mechanism is validated by a numerical simulation and an experiment.

Keywords

numerical analysis; optical fibre LAN; ALR control function; OLT; ONU mode; adaptive link rate control mechanism; downlink rate; energy efficient 10G-EPON; ethernet passive optical network unit; numerical simulation; optical line terminal; power consumption; sleep link rate control mechanism; Downlink; Optical network units; Optical switches; Optical transmitters; Passive optical networks; Power demand; Sleep; Adaptive link rate (ALR) control; Communication systems; Optical communication; Passive optical network (PON); Power saving; Sleep control;

fLanguage

English

Journal_Title

Optical Communications and Networking, IEEE/OSA Journal of

Publisher

ieee

ISSN

1943-0620

Type

jour

DOI

10.1364/JOCN.2.000716

Filename

5559269