基于WDM技术光传送网的生存性分析

Research on Survivability of Optical Transmission Network Based on WDM

研究了基于波长路由的WDM光传送网结构中的生存性问题，并从降低WDM光网络的成本、充分利用网络有限资源出发，提出了一种基于自愈环+网状网的WDM光传送网的自愈方案。该方案能根据业务和故障的具体情况，动态地分配网络的光纤及波长资源，增强了WDM光网络的灵活性和生存能力。且该方案构架于WDM光层之上，可根据节点对间业务的不同要求，分别采用不同的自愈保护方案，以满足不同用户业务对自愈性能的实时要求。

This paper studies the survival performance of WDM optical networks based on wavelength routing. In order to reduce cost and make full use of finite resource of WDM optical networks, a survival scheme of WDM optical network based on self-healing ring in combination with mesh network is put forward. The scheme can dynamically allocate networks( optical fiber and wavelength resource according to concrete situation of network traffic and failure, and enhance flexibility and survivability of WDM OTN, which satisfies different user service for real time demand of survival performance.