波长路由网络光通路呼叫阻塞分析研究

基于马尔科夫链相关性理论研究了波分复用全光网络中光通路呼叫请求过程,提出了阻塞性能数学分析方法。模型中引入了光网络资源预留过程中所应该考虑的光节点接收器的配置情况。数值分析表明,光纤中复用的波长数越多以及网络通信负载量较小时,配置波长转换能明显改善光网络的阻塞性能,而且目的光节点配置接收器的数量约为光纤链路复用波长数的二分之一时,即使增加配置节点接收器的数量也难以提高光通路的呼叫阻塞性能。

Blocking analysis of light path calls for wavelength routed network

The procedure of light-path calls for WDM all-optical network was analyzed based on Markovian correlation model and blocking performance model was proposed. Receivers configured in optical node were introduced in the analytical model since this factor should be considered in the procedure of resource reserved for optical network. And then the final numerical result shows that the configuration of wavelength converters in optical nodes can distinctly improve the blocking performance for optical network when the number of wavelengths per link is augmented with offered light load, furthermore, when the receiver number is about half of the number of wavelengths multiplexed per link, it is difficult to enhance blocking performance of light-path calls even though the more optoelectronic receivers are added.