一种WDM网状网中基于共享保护的业务量疏导算法

A Traffic Grooming Algorithm Based on Shared Protection in WDM Mesh Networks

在WDM网络中业务的带宽需求远低于一个波长所提供的带宽,业务量疏导可以聚集低速业务到大容量的光路中从而有效地利用波长带宽资源。目前大多数业务量疏导的研究限于环形网,考虑对WDM网状网中低速业务可靠疏导的文献更少.该文综合考虑WDM网状网生存性及业务量疏导,提出了基于波长分层图的共享保护业务量疏导算法(SPTG—LG,Slaared Protection Traffic Grooming algorithmbased on wavelength Layered—Graph),并对算法进行了仿真和分析.

In WDM networks, the bandwidth request of a traffic stream can be much lower than the capacity of a wavelength. Traffic grooming can aggregate low-rate connections onto high-capacity lightpaths to make full use of the bandwidth. But most of the researches related to traffic grooming has focused on ring networks, and fewer concerns are about the dependable traffic grooming of low-rate connections in WDM mesh networks. In this paper, a Shared Protection Traffic Grooming algorithm is proposed based on wavelength Layered-Graph (SPTG-LG) considering both the survivability and traffic grooming in WDM mesh networks. Some simulations and analysis are also given out.