摘要
在保护和恢复机制方面,分组传送网络面临运行操作与维护(OAM)检测性能、网络资源优化、资源分配死锁、资源部署阻塞等众多挑战。传统的保护和恢复机制已不能满足分组传送网络的需求。为了提高分组传送网络保护恢复性能、网络资源的利用率、业务恢复可能性,减少业务部署的阻塞率,文章对交迭段保护机制、预规划多环、冲突避免算法、延时恢复算法等新型保护恢复机制进行了研究,得出观点:保护和恢复机制合理,由时分复用向分组承载的平滑演进、网络融合和网络全业务化才有可能。
In its protection and restoration mechanisms,Packet Transport Networking（PTN）,is facing many challenges.Such challenges arise in the areas of Operation Administration and Maintenance（OAM） detection performance,network resource optimization,resource allocation deadlock,and resource deployment blocking.Traditional mechanisms of protection and restoration cannot meet the requirements of Packet Transport Networks.In order to improve protection and restoration,network resource use,probability of service restoration,and to decrease the probability of service blocking,this paper introduces mechanisms such as overlay section protection,pre-configure pre-planned cycle,conflict-release algorithm,and delay restoration algorithm.Finally,it concludes that only the protection and restoration mechanism can reasonably achieve network integration,network operation,and the smooth evolution from TDM to packet bearing networks.
出处
《中兴通讯技术》
2010年第3期17-20,共4页
ZTE Technology Journal
基金
国家高技术研究发展计划"(863"计划)课题(2007AA01Z252)
关键词
分组传送网络
保护
恢复
阻塞率
packet transport network
protection
restoration
blocking
