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提出了一种基于虚拟突发光突发交换的(OBS)网络业务疏导机制TG-VB(traffic grooming based on virtual burst)。作为一种多粒度动态业务疏导机制,TG-VB将常规突发通过“逻辑汇聚”组成虚拟突发,增大核心网中业务传输粒度;同时,TG-VB根据虚拟突发整体传输、整体调度的特点,为汇聚的常规突发动态地选择最优的共用传输路径。仿真结果表明,与采用传统疏导机制的OBS网络相比,TG-VB能够有效地减轻核心节点的通信处理开销,降低对网络节点端口数量的需求;在相同负载条件下,TG-VB可极大地提高波长信道利用率。
A traffic grooming based on virtual burst (OBS) service grooming mechanism based on virtual burst optical burst switching is proposed. As a multi-granularity dynamic service grooming mechanism, TG-VB will make regular bursts become virtual bursts through “logical aggregation” to increase the granularity of service transmission in the core network. At the same time, TG- The characteristics of the overall scheduling, convergence for the conventional burst dynamically select the optimal shared transmission path. The simulation results show that TG-VB can effectively reduce the communication overhead of core nodes and reduce the number of nodes in the network compared with the OBS network adopting the traditional grooming mechanism. Under the same load conditions, TG-VB can greatly reduce Improve wavelength channel utilization.