A Novel Energy-Saving Algorithm Based on Sleeping Low-Loaded ONU for Hybrid Wireless-Optical Broadband Access Network
Since the access network plays the dominant role of energy consumption in the whole network, it is necessary to study the energy-efficient design on access technique. This paper aims to develop the green Hybrid Wireless-Optical Broadband Access Network (HWOBAN) by sleeping low-loaded Optical Network Units (ONUs) as much as possible to save the energy. Correspondingly, a heuristic approach, Energy-saving Algorithm based on Sleeping Low-loaded OUNs (EASLO), is proposed in the paper. In EASLO, most of traffic has higher probability to be carried by the currently active ONUs through dynamic energy-awareness mechanism, so that the higher resource utilization of ONUs can be achieved.