可重构服务承载网主动保护算法研究

基于可重构柔性网络(RFNet,reconfigurable flexible network)构建可重构服务承载网(RSCN,reconfigurableservice carrying network)能够为终端用户提供满足业务特性需求的通信服务,有效地解决了传统互联网体系结构面临的困境。鉴于网络故障造成的负面影响,针对RSCN主动保护问题进行了数学建模和理论分析。为了尽量避免重要资源故障给网络带来的影响,设计了资源紧迫度感知的主路径构建子算法RSF-awareMLCA;为了提高RSCN的运行成功率并降低网络链路故障损失,设计了RSCN保护链路构建子算法RPLCA;结合2个子算法,设计了RSCN主动保护构建算法RAPA。最后,分析了算法的复杂度,从RSCN成功运行率、主链路利用率和平均网络链路故障损失3个方面验证了RAPA的优越性。

Research on reconfigurable service carrying network active protection algorithms

To construct reconfigurable service carrying network(RSCN) in reconfigurable flexible network(RFNet) in-frastructure could provide traffic specific communication services for different end users.This could effectively solve the puzzle faced by traditional Internet infrastructure.Because of the blight of network failure,active protection problems of RSCN were discussed.Mathematics model of RSCN active protection issues were established.To avoid enormous influ-ence because of important resource failure,a resource stress factor(RSF) awareness main link construction algorithm named RSF-aware MLCA was proposed.To improve success running ratio and reduce network link failure loss of RSCN,a RSCN protection link construction algorithm named RPLCA was implemented.Considering of the two sub-algorithms,RSCN active protection algorithm named RAPA was designed.The efficiency of algorithms was evaluated by emulation experiments according to RSCN success running ratio and main link utilization ratio and average network link failure loss under several scenarios.