多目标约束下的光突发交换网络组装参数分析

Analysis of Assembling Algorithm in Optical Burst Switching Networks under Multiple Objective Restrictions

该文分析和研究了光突发交换网络中控制平面处理时延、数据平面资源利用效率以及数据平面突发丢失率等性能需求对边缘节点组装算法的约束性。分析结果证实数据平面的性能对边缘节点的组装算法参数更加敏感。在网络性能多目标约束条件下,基于无波长转换器核心节点的光突发交换网络几乎不存在有效的组装门限。在核心节点采用主流光交换矩阵且期望突发碰撞概率在10-4以下时,核心节点输出端口的单纤波长转换器数量至少需要30个以满足网络性能需求的约束条件。

The restriction of the network performance such as the processing delay of control plane, the utilization probability and the burst collision probability on the assembling algorithm is analyzed and studied. The results verify that the data plane is more sensitive than the control plane with the assembling algorithm of edge nodes. The network with core nodes without wavelength converter has no valid assembling threshold under the multiple objective restrictions. When implemented with a general optical exchange connector and under the desired burst collision ratio 10^-4 , the core node needs at least thirty wavelength converters per output fiber link to satisfy the performance requirement.