The active-fault-alarm （AFA） has been developed to achieve fast recovery of various network services, but the false-alarm still exists when applied to 10 Gigabit ethernet positive optical network （10G-EPON） in pow...The active-fault-alarm （AFA） has been developed to achieve fast recovery of various network services, but the false-alarm still exists when applied to 10 Gigabit ethernet positive optical network （10G-EPON） in power grid. To solve this problem, an active fault alarm based pre-protection （AFA-PP） scheme in 10G-EPON system for power grid is proposed in this paper. The AFA-PP scheme takes full advantage of the AFA technologies, and allows conducting pre-protection operation in advance. Analytical and experimental results suggest the better performances of the new mechanism and show that the AFA-PP can solve the false-alarm problem efficiently.展开更多
As virtual networks services emerge increasingly with higher requirement of flexibility and robust, great complex challenges caused by physical-layer impairments are presented to the elastic optical networks(EON). Aim...As virtual networks services emerge increasingly with higher requirement of flexibility and robust, great complex challenges caused by physical-layer impairments are presented to the elastic optical networks(EON). Aimed to solve this problem, this paper proposes a physical impairment awareness based virtual network mapping stragegy of EON. The physical impairments awareness model is established, including both of linear factors and nonlinear ones. On this basis, this paper proposes a virtual network mapping strategy with detailed procedures, combined with node importance factors during the virtual network mapping procedure. Test results show that the proposed approach is able to reduce blocking rate and enhance services supporting ability of EON.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
基金supported by the Hi-Tech Research and Development Program of China (2011AA05A116)
文摘The active-fault-alarm （AFA） has been developed to achieve fast recovery of various network services, but the false-alarm still exists when applied to 10 Gigabit ethernet positive optical network （10G-EPON） in power grid. To solve this problem, an active fault alarm based pre-protection （AFA-PP） scheme in 10G-EPON system for power grid is proposed in this paper. The AFA-PP scheme takes full advantage of the AFA technologies, and allows conducting pre-protection operation in advance. Analytical and experimental results suggest the better performances of the new mechanism and show that the AFA-PP can solve the false-alarm problem efficiently.
文摘As virtual networks services emerge increasingly with higher requirement of flexibility and robust, great complex challenges caused by physical-layer impairments are presented to the elastic optical networks(EON). Aimed to solve this problem, this paper proposes a physical impairment awareness based virtual network mapping stragegy of EON. The physical impairments awareness model is established, including both of linear factors and nonlinear ones. On this basis, this paper proposes a virtual network mapping strategy with detailed procedures, combined with node importance factors during the virtual network mapping procedure. Test results show that the proposed approach is able to reduce blocking rate and enhance services supporting ability of EON.
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.
