摘要
为了保证数据中心间光互联网络中业务所需的可靠性,同时提高网络资源利用率,提出一种带有可靠性感知的跨层保护策略.该策略在软件定义的IP over弹性光网络架构中,通过IP层和光层控制器的协同工作,将业务的实时可靠性告知光层,使光层充分感知业务特性.在此基础上,光层控制器根据业务实时可靠性的变化,在确保业务可靠性得到满足的前提下,设计最小资源占用块释放方法来动态调整光层保护资源.仿真结果表明,该保护策略在充分保证业务可靠性的同时,可以取得较低的保护开销和阻塞率.
In order to guarantee the reliability of the services and improve the resource utilization ratio ofoptical networks, the reliability-aware cross-layer protection strategy is proposed inetworks. In the architecture of the software defined IP over the clastic optical netcould be aware of the services’ real-time reliability through the cooperation of the controllers oand optical layer. And then the optical controller could dynamically adjust the protected resources exploitingthe release method of the minimal resource occupation block for the service atime reliability. Simulation results show that the proposed strategy can achieve a lower pand blocking ratio while guaranteeing the reliability requirement of services.
作者
熊余
李志强
杨娅娅
XIONG Yu;LI Zhiqing;YANG Yaya(Key Lab.of Optical Communication and Networks,Chongqing Univ.of Posts and Tclccommunications,Chongqing,40006)
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2018年第3期136-142,共7页
Journal of Xidian University
基金
国家自然科学基金资助项目(61401052)
国家留学基金委员会资助项目(201608500030)
重庆市教育委员会科学技术研究资助项目(KJ1400418
KJ1500445)
重庆邮电大学博士启动基金资助项目(A2015-09)
关键词
数据中心间光互联网络
单性光网络
可靠性感知
动态保护
optical intcr-dataccntcr networks
clastic optical network
reliability-aware
dynamic protection
