摘要
针对支持流量疏导的EON(弹性光网络),提出了一种改进的共享保护策略。改进策略针对不同粒度级别(如光隧道级和低速子载波级)的路径进行分级的共享保护,以保证对网络中隧道级路径进行隧道级保护。仿真结果表明,文章所提保护算法比传统的共享保护算法在阻塞率及资源利用率方面都有明显改善,其中业务阻塞率最大降低了0.47;在保护带G为16个频隙的情况下,资源利用率可节约10.95%。
This paper proposes an improved shared protection strategy for Traffic Grooming （TG）-supporting Elastic Optical Networks （EON）, which provide classified shared protection for paths with different levels of granularity, e.g. optical tunnel and low-rate suhcarrier, so as to ensure protections for tunnel-level paths. Simulation results show that the proposed protection algorithm is significantly improved in terms of service blocking probability and resource utilization rate as compared with the traditional ones： the former is reduced by 0.47 and the latter improved by 10.95% when the protection band G = 16 frequency slots.
出处
《光通信研究》
北大核心
2015年第3期24-26,53,共4页
Study on Optical Communications
关键词
弹性光网络
流量疏导
共享保护
资源利用率
EON
traffic grooming
shared protection
resource utilization rate
