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http://dx.doi.org/10.7840/KICS.2012.37B.5.317

Transition Decision Algorithm for Energy Saving in OBS Network with LPI  

Kang, Dong-Ki (한국과학기술원 전기및전자공학과 고성능네트워크연구실)
Yang, Won-Hyuk (전북대학교 컴퓨터공학과 차세대통신망연구실)
Lee, Ki-Beom (전북대학교 전자정보공학부)
Kim, Young-Chon (전북대학교 IT정보공학부 스마트그리드연구센터)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37, no.5B, 2012 , pp. 317-326 More about this Journal
Abstract
Recently, many researchers have studied to solve the energy consumption of network equipments since the interest of Green IT has been increased. In this paper, we apply Low Power Idle (LPI) to OBS network to reduce energy consumption of network devices. Many previous researches have focused on maximizing the sleep time of network equipments to increase the energy saving efficiency of LPI. But transition overhead caused by LPI might not only depreciate the performance of energy saving but also increase packet delay. In this paper, Transition Decision (TD) algorithm is proposed to improve energy saving efficiency by reducing the number of unnecessary transition and guarantee the required QoS such as packet delay. To evaluate the performance of proposed algorithm, we model OBS edge router with LPI by OPNET and analyze the performance of the proposed algorithm in views of energy saving, transition count and average packet delay.
Keywords
Green IT; Energy Saving; LPI; OBS; Transition;
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