介绍了频谱灵活光网络的研究背景、基本思想及其研究进展,分析了频谱灵活光网络生存性的研究意义,综述了频谱灵活光网络生存性的研究现状及发展动态。探讨目前频谱灵活光网络生存性机制存在的问题,并对其下一步研究进行展望,尤其指出在设计频谱灵活光网络的生存性机制时需要同时考虑网络的拥塞避免问题。
The background, the basic idea and the recent progress of flexible spectrum optical networks are introduced; the significance of researching network survivability in flexible spectrum optical networks is analyzed; the research status quo and the latest research development on network survivability in flexible spectrum optical networks are overviewed; the existing problems are discussed and some directions in the later research of network survivability in flexible spectrum optical networks are pointed out, especially the network congestion avoidance should be considered in designing the survivability mechanism of flexible spectrum optical networks.