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學習 Software-Defined Energy-Saving在TWDM-PON中Energy-Saving 的機制

為了解決TEIN FLEX A的問題，作者安德魯 這樣論述：

It is important for network operators to deploy access network technology that provides vast transmission capacity and supports energy efficient operation. Passive optical network (PON) is a prominent technology in the access network technologies that provides the essential high transmission capaci

ty, “future-proof” medium and has less energy consumption among the access network technologies. However, the worldwide deployment of PON systems still consumes a significant amount of energy. The time and wavelength division multiple access (TWDMA) PON is the next-generation architecture. The chall

enging issue is how to deploy time and wavelength scheduling system that is adept to control the multiple DBAs, the ALR and ONU sleeping condition. Recently, software-defined network (SDN) approach has been proposed to simplify access network control and management. With SDN programmability, the pow

er consumption of the PON system can be reduced through dynamic network resource provisioning. With this enhanced controllability, the SDN is adept at bringing more energy-saving capabilities and enhancements to the current PON standards. Therefore, in this dissertation, the study proposes a new sof

tware-defined architecture and operation for TWDMA PON, where the author introduces the advantages of software-defined to provide inclusive energy saving both OLT and ONUs. The author proposes a new software-defined OLT and ONU architecture to provide the necessary software-defined capability to the

PON system. The proposed architecture appoints SD applications to orchestrate the number of active OLT transceivers, link-rates, ONU’s (Rx) receiver sleep duration, and ONU’s transmitter (Tx) wake-up threshold according to the traffic condition. The SD programmable operations deliver a balance betw

een OLT and ONU energy-saving, while still guaranteeing the QoS requirements.