机构地区:[1]Research Center for Optical Internet & Mobile Information Networks,University of Electronic Science and Technology of China [2]Institute of Advanced Network Technology,University of Science & Technology Beijing
出 处:《Science China(Information Sciences)》2013年第4期56-64,共9页中国科学(信息科学)(英文版)
基 金:supported by Chang Jiang Scholars Program of the Ministry of Education of China,National Science Fund for Distinguished Young Scholars (Grant No. 60725104);National Basic Research Program of China (Grant No. 2007CB310706);National Natural Science Foundation of China (Grant Nos. 61071101,60873263,60932002,60932005);National High Technology Research and Development Program of China (Grant Nos. 2009AA01Z254,2009AA01Z215);NCET Program of MoE of China
摘 要:The challenges imposed by environmental issues, such as global warming and the energy crisis, are demanding more responsible energy usage, including in the optical networking field. In optical transmission networks, most of the electrical power is consumed by the optical-electrical-optical conversion in optical repeaters. Modern optical network control plane technologies allow idle optical repeaters to be put into a low-power sleep mode. Inspired by this, we propose a novel power-efficient routing and wavelength assignment (RWA) algorithm, called HTAPE. The HTAPE algorithm exploits the knowledge of the connection holding times to minimize the number of optical repeaters in the active mode, and hence reduce the total electricity consumption of the optical network. We test the new algorithm on the typical CERNET and USNET networks. Compared with traditional RWA algorithms without holding-time-awareness, it is observed that the HTAPE algorithm yields significant reductions in power consumption.The challenges imposed by environmental issues, such as global warming and the energy crisis, are demanding more responsible energy usage, including in the optical networking field. In optical transmission networks, most of the electrical power is consumed by the optical-electrical-optical conversion in optical repeaters. Modern optical network control plane technologies allow idle optical repeaters to be put into a low-power sleep mode. Inspired by this, we propose a novel power-efficient routing and wavelength assignment (RWA) algorithm, called HTAPE. The HTAPE algorithm exploits the knowledge of the connection holding times to minimize the number of optical repeaters in the active mode, and hence reduce the total electricity consumption of the optical network. We test the new algorithm on the typical CERNET and USNET networks. Compared with traditional RWA algorithms without holding-time-awareness, it is observed that the HTAPE algorithm yields significant reductions in power consumption.
关 键 词:routing and wavelength assignment power consumption connection holding time dynamic WDM optical network
分 类 号:TN929.1[电子电信—通信与信息系统] TN4[电子电信—信息与通信工程]
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