This article discusses the issue of resource conflict in the generalized multi-protocol label switching (GMPLS) controlled optical network. Based on the analysis of the current random rebuilding mechanism and its dr...This article discusses the issue of resource conflict in the generalized multi-protocol label switching (GMPLS) controlled optical network. Based on the analysis of the current random rebuilding mechanism and its drawbacks, this article presents two enhanced solutions for improvement, namely, the priority-based resource allocation mechanism and the network management system (NMS) based sequential resource allocation mechanism. Experimental results show that the presented mechanisms perform better than the original random rebuilding solution in terms of the connection setup/recovery time and successful rate.展开更多
传统的自动交换光网络(automatically switched optical network,ASON)技术在承载重要型业务的时候有着很强的保护与恢复策略,并且有着其他承载技术无法比拟的优越性,但客观上也存在一些问题,如其保护策略的强大是以消耗大量的网络带宽...传统的自动交换光网络(automatically switched optical network,ASON)技术在承载重要型业务的时候有着很强的保护与恢复策略,并且有着其他承载技术无法比拟的优越性,但客观上也存在一些问题,如其保护策略的强大是以消耗大量的网络带宽资源为代价的,对网络资源的使用率较低。针对此,介绍了一种基于2 Mibit/s速率级别(以下简称"2 M")的ASON新技术,分析了2 M ASON技术相对于传统ASON做出的革新,如2 M ASON通道建立的过程、对节点失效的保护策略以及全新的"先拆后建"的通道恢复机制。由此证明2 M ASON技术在提高网络生存性与网络资源利用率两方面带来的进步。最后,将2 M ASON技术与电力系统中实时性较高的业务有机结合,设计了一种适合承载电力差动保护业务的方案。展开更多
基金National Natural Science Foundation of China (60572021, 60710047)the National Basic Research Program of China (2007CB310705)+3 种基金the Hi-Tech Research and Development Program of China (2006AA01Z243)NCET (06-0090), PCSIRT (IRT0609)ISTCP (2006DFA11040)111 Project (B07005)
文摘This article discusses the issue of resource conflict in the generalized multi-protocol label switching (GMPLS) controlled optical network. Based on the analysis of the current random rebuilding mechanism and its drawbacks, this article presents two enhanced solutions for improvement, namely, the priority-based resource allocation mechanism and the network management system (NMS) based sequential resource allocation mechanism. Experimental results show that the presented mechanisms perform better than the original random rebuilding solution in terms of the connection setup/recovery time and successful rate.
文摘传统的自动交换光网络(automatically switched optical network,ASON)技术在承载重要型业务的时候有着很强的保护与恢复策略,并且有着其他承载技术无法比拟的优越性,但客观上也存在一些问题,如其保护策略的强大是以消耗大量的网络带宽资源为代价的,对网络资源的使用率较低。针对此,介绍了一种基于2 Mibit/s速率级别(以下简称"2 M")的ASON新技术,分析了2 M ASON技术相对于传统ASON做出的革新,如2 M ASON通道建立的过程、对节点失效的保护策略以及全新的"先拆后建"的通道恢复机制。由此证明2 M ASON技术在提高网络生存性与网络资源利用率两方面带来的进步。最后,将2 M ASON技术与电力系统中实时性较高的业务有机结合,设计了一种适合承载电力差动保护业务的方案。