For the next generation optical switching networks, the intelligent control plane is a key enabling technique. In this paper, we review our recent research activities related to Generalized Multi-Protocol Label Switch...For the next generation optical switching networks, the intelligent control plane is a key enabling technique. In this paper, we review our recent research activities related to Generalized Multi-Protocol Label Switching (GMPLS) and Open Flow-based control planes for both Wave length Switched Optical Networks (WSON) and Elastic Optical Networks (EON).展开更多
Conventional optical burst switching(OBS)technique adopts purely statistical multiplex mechanismso that the bursts collide with each other very easily.To address this problem,a novel proactive con-tention avoidance sc...Conventional optical burst switching(OBS)technique adopts purely statistical multiplex mechanismso that the bursts collide with each other very easily.To address this problem,a novel proactive con-tention avoidance scheme is proposed,which assigns dedicated wavelengths to each ingress node,then st-numbering algorithm is used to construct the traffic load balanced spanning trees .In this way,contentioncan be eliminated at ingress nodes,and the amount of bursts that could be accommodated by ingressnodes will be maximized.Further,those unused wavelengths left by traffic load balanced spanning treeare also organized as partial trees to carry bursts,thus the link utilization can be improved effectively.Simulation result shows that our scheme can improve the burst loss performance significantly without thewavelength converters or optical buffers comparing to other popular routing and wavelength assignment(RWA)algorithms.展开更多
高速公路机电通信系统对高速公路的运行情况与各项服务实施全方位监督,有效确保高速公路全线路的高效运行。首先阐述了高速公路机电通信系统的构成与主要功能,在此基础上对自动交换光网络技术、分组传送网技术、ATM over SDH技术进行研...高速公路机电通信系统对高速公路的运行情况与各项服务实施全方位监督,有效确保高速公路全线路的高效运行。首先阐述了高速公路机电通信系统的构成与主要功能,在此基础上对自动交换光网络技术、分组传送网技术、ATM over SDH技术进行研究,给出了GPRS无线通信技术、ITS通信技术在高速公路机电系统中的应用。高速公路交通机电通信技术的应用使得高速公路向着智能化、安全化、规范化、高效化的方向发展,提升了高速公路的运行质量和效率。展开更多
文摘For the next generation optical switching networks, the intelligent control plane is a key enabling technique. In this paper, we review our recent research activities related to Generalized Multi-Protocol Label Switching (GMPLS) and Open Flow-based control planes for both Wave length Switched Optical Networks (WSON) and Elastic Optical Networks (EON).
基金supported by the National Natural Science Foundation of China(No.60572050)the National High Technology Research and Development Programme of China(No.2008AA01Z211)
文摘Conventional optical burst switching(OBS)technique adopts purely statistical multiplex mechanismso that the bursts collide with each other very easily.To address this problem,a novel proactive con-tention avoidance scheme is proposed,which assigns dedicated wavelengths to each ingress node,then st-numbering algorithm is used to construct the traffic load balanced spanning trees .In this way,contentioncan be eliminated at ingress nodes,and the amount of bursts that could be accommodated by ingressnodes will be maximized.Further,those unused wavelengths left by traffic load balanced spanning treeare also organized as partial trees to carry bursts,thus the link utilization can be improved effectively.Simulation result shows that our scheme can improve the burst loss performance significantly without thewavelength converters or optical buffers comparing to other popular routing and wavelength assignment(RWA)algorithms.
文摘高速公路机电通信系统对高速公路的运行情况与各项服务实施全方位监督,有效确保高速公路全线路的高效运行。首先阐述了高速公路机电通信系统的构成与主要功能,在此基础上对自动交换光网络技术、分组传送网技术、ATM over SDH技术进行研究,给出了GPRS无线通信技术、ITS通信技术在高速公路机电系统中的应用。高速公路交通机电通信技术的应用使得高速公路向着智能化、安全化、规范化、高效化的方向发展,提升了高速公路的运行质量和效率。