This paper describes the current research status of theλ-tunable Wavelength-Division Multiplexing/Time-Division-Multiplexing-Passive Optical Network(WDM/TDM-PON). This optical access system realizes new cost-effectiv...This paper describes the current research status of theλ-tunable Wavelength-Division Multiplexing/Time-Division-Multiplexing-Passive Optical Network(WDM/TDM-PON). This optical access system realizes new cost-effective operations from the network operator′s point of view.The main feature of the proposed system is that it aggressively exploits wavelength tunability.We classify the system configurations and applications.Then,we describe key technologies,namely newly developedλ-tuning burst-mode transceivers and a widely applicable Dynamic Wavelength and Bandwith Allocation(DWBA)algorithm.Finally,we summarize our research and discuss several issues related to the λ-tunable Wavelength-Division Multiplexing/Time-Division-MultiplexingPassive Optical Network(WDM/TDM-PON).展开更多
随着网络规模和流量的迅速增长,Internet的能耗问题变得日益严重.文中研究IP(Internet Protocol)over TDM over WDM核心网的能耗问题,首先对多层网络的节能机制进行了分析,在此基础上,提出了一种多层网络能耗优化的ITO模型,充分考虑多...随着网络规模和流量的迅速增长,Internet的能耗问题变得日益严重.文中研究IP(Internet Protocol)over TDM over WDM核心网的能耗问题,首先对多层网络的节能机制进行了分析,在此基础上,提出了一种多层网络能耗优化的ITO模型,充分考虑多层网络的体系结构和网络设备的模块化特性,协同使用网络业务流控制和网络资源配置与管理的方法,实现业务流在多个网络层合理的分配和路由以及网络设备的多粒度模块睡眠,以达到降低网络能耗的目的.实验结果表明,ITO模型能有效降低网络的能耗,在网络业务量较低时,可将网络功耗降到业务高峰期时的24%～38%.此外,该文还通过实验探讨了业务的疏导和旁通、不同的网络层组合、网络设备的动态功耗以及网络设备的模块化结构对网络能耗优化的影响,为构建节能高效的绿色网络提供了参考.展开更多
基金Research and development of ultra high speed and low power consumption photonic network technology by the Ministry of Internal Affairs and Communications of Japan
文摘This paper describes the current research status of theλ-tunable Wavelength-Division Multiplexing/Time-Division-Multiplexing-Passive Optical Network(WDM/TDM-PON). This optical access system realizes new cost-effective operations from the network operator′s point of view.The main feature of the proposed system is that it aggressively exploits wavelength tunability.We classify the system configurations and applications.Then,we describe key technologies,namely newly developedλ-tuning burst-mode transceivers and a widely applicable Dynamic Wavelength and Bandwith Allocation(DWBA)algorithm.Finally,we summarize our research and discuss several issues related to the λ-tunable Wavelength-Division Multiplexing/Time-Division-MultiplexingPassive Optical Network(WDM/TDM-PON).
文摘随着网络规模和流量的迅速增长,Internet的能耗问题变得日益严重.文中研究IP(Internet Protocol)over TDM over WDM核心网的能耗问题,首先对多层网络的节能机制进行了分析,在此基础上,提出了一种多层网络能耗优化的ITO模型,充分考虑多层网络的体系结构和网络设备的模块化特性,协同使用网络业务流控制和网络资源配置与管理的方法,实现业务流在多个网络层合理的分配和路由以及网络设备的多粒度模块睡眠,以达到降低网络能耗的目的.实验结果表明,ITO模型能有效降低网络的能耗,在网络业务量较低时,可将网络功耗降到业务高峰期时的24%～38%.此外,该文还通过实验探讨了业务的疏导和旁通、不同的网络层组合、网络设备的动态功耗以及网络设备的模块化结构对网络能耗优化的影响,为构建节能高效的绿色网络提供了参考.
