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在综合考虑了光信号传输损伤和业务分级等因素对WDM网络光层实现资源动态配置影响的基础上, 提出了一种新型光网资源动态配置模型. 这种资源配置模型把光路连接请求优先级映射为不同的传输损伤阈值, 定义了统一的候选虚波长通道(VWP)评价方法. 针对动态业务流量、多优先级条件下波长路由光网中的RWA问题, 给出了改进的首选波长集算法(A-PWS)和启发式的动态最小代价路由及最佳虚波长通道算法(DMC-OVWP). 在收到光路连接请求时, 应用DMC-OVWP算得多条候选VWP, 然后结合传输损伤分析对候选VWP进行评价, 从中选出与该请求的优先级相匹配的VWP并建立光路.
Based on the consideration of the impact of optical signal transmission impairment and service classification on the dynamic allocation of resources in WDM network optical layer, a new model of dynamic allocation of optical network resources is proposed, which allocates optical path connection priority (VWP) is defined for different transmission damage thresholds.Aiming at the problem of RWA in wavelength routing optical network with multi-priority and dynamic traffic, this paper presents an improved preferred wavelength set algorithm (A-PWS) and the heuristic dynamic minimum cost routing (DMC-OVWP) and DMC-OVWP algorithm.When receiving optical path connection request, DMC-OVWP is used to calculate multiple candidate VWPs, and then combined with the transmission damage analysis The candidate VWP evaluates, selects the VWP that matches the priority of the request, and establishes the optical path.