IEC61850协议已扩展应用于分布式能源(Distributed Energy Resources,DER)系统,但并未构建通信设备的配置、管理信息模型,给通信网络管理和维护带来问题。通过对DER场景下EPON系统架构和设备信息模型的研究,扩充并构建了IEC61850协议下...IEC61850协议已扩展应用于分布式能源(Distributed Energy Resources,DER)系统,但并未构建通信设备的配置、管理信息模型,给通信网络管理和维护带来问题。通过对DER场景下EPON系统架构和设备信息模型的研究,扩充并构建了IEC61850协议下的EPON设备信息模型,再由信息模型映射到制造报文规范(Manufacturing Message Specification,MMS)应用协议,实现了通信设备管理和并网操作的信息融合及TCP/IP传输。通过搭建实验系统,验证了所设计系统不仅能对DER并网提供灵活的通信配置支持,而且实现了业务系统与通信系统的统一监控。展开更多
As internet services newly emerge with diversity and complexity, great challenges and demands are presented to both IP network and optical network to support various services. Aimed to solve this problem, this paper p...As internet services newly emerge with diversity and complexity, great challenges and demands are presented to both IP network and optical network to support various services. Aimed to solve this problem, this paper proposes a light-weighted echo-state-network(LW-ESN) based services awareness scheme of the software defined IP and optical converged network. This LW-ESN model adopts the ring topology structure inside and generates the probability output result to determine the quality of service policy of IP and optical converged network. Moreover, the LW-ESN based service awareness engine is also designed in controller node of IP and optical converged network to perform services awareness by obtaining service traffic parameters from IP and optical layers, together with necessary working procedure. Simulation results show that the proposed approach is able to improve the services-oriented supporting ability in terms of blocking rate and delay time.展开更多
To enhance the communication quality of Open Flow controlled all-optical networks,an optical signal-to-noise ratio comprehensive-awareness(OSNR-CA) model based lightpath control scheme is proposed.This approach transf...To enhance the communication quality of Open Flow controlled all-optical networks,an optical signal-to-noise ratio comprehensive-awareness(OSNR-CA) model based lightpath control scheme is proposed.This approach transforms main physical-layer optical impairments into OSNR value,and takes this comprehensive OSNR value of the optical signal along the lightpath into consideration,when establishing the lightpath for the connection request using OpenFlow protocol.Moreover,the proposed scheme makes full advantages of the OSNR monitoring function in each node,and assigns the lightpath according to the comprehensive-OSNR value by extending messages of Open Flow protocol,in order to guarantee the reliable establishment of the lightpath.The simulation results show that the proposed scheme has better performance in terms of packet loss rate and lightpath establishment time.展开更多
文摘IEC61850协议已扩展应用于分布式能源(Distributed Energy Resources,DER)系统,但并未构建通信设备的配置、管理信息模型,给通信网络管理和维护带来问题。通过对DER场景下EPON系统架构和设备信息模型的研究,扩充并构建了IEC61850协议下的EPON设备信息模型,再由信息模型映射到制造报文规范(Manufacturing Message Specification,MMS)应用协议,实现了通信设备管理和并网操作的信息融合及TCP/IP传输。通过搭建实验系统,验证了所设计系统不仅能对DER并网提供灵活的通信配置支持,而且实现了业务系统与通信系统的统一监控。
基金supported by the Science and Technology Project of State Grid Corporation of China:"Research on the Power-Grid Services Oriented"IP+Optical"Coordination Choreography Technology"(No.546816180006)
文摘As internet services newly emerge with diversity and complexity, great challenges and demands are presented to both IP network and optical network to support various services. Aimed to solve this problem, this paper proposes a light-weighted echo-state-network(LW-ESN) based services awareness scheme of the software defined IP and optical converged network. This LW-ESN model adopts the ring topology structure inside and generates the probability output result to determine the quality of service policy of IP and optical converged network. Moreover, the LW-ESN based service awareness engine is also designed in controller node of IP and optical converged network to perform services awareness by obtaining service traffic parameters from IP and optical layers, together with necessary working procedure. Simulation results show that the proposed approach is able to improve the services-oriented supporting ability in terms of blocking rate and delay time.
基金supported by the National High Technical Research and Development Program of China(863 Program)(No.2012AA050804)
文摘To enhance the communication quality of Open Flow controlled all-optical networks,an optical signal-to-noise ratio comprehensive-awareness(OSNR-CA) model based lightpath control scheme is proposed.This approach transforms main physical-layer optical impairments into OSNR value,and takes this comprehensive OSNR value of the optical signal along the lightpath into consideration,when establishing the lightpath for the connection request using OpenFlow protocol.Moreover,the proposed scheme makes full advantages of the OSNR monitoring function in each node,and assigns the lightpath according to the comprehensive-OSNR value by extending messages of Open Flow protocol,in order to guarantee the reliable establishment of the lightpath.The simulation results show that the proposed scheme has better performance in terms of packet loss rate and lightpath establishment time.
