弹性光网络中基于带宽和持续时间的业务标记保护算法  

Service label protection algorithm based on bandwidth and holding time in elastic optical networks

作　　者：杨斌 李子凡 陈芳 李伯中 赵星宇 赵婧涵 包博文 YANG Bin;LI Zifan;CHEN Fang;LI Bozhong;ZHAO Xingyu;ZHAO Jinghan;BAO Bowen(State Grid Corporation of China,Beijing 100031,China;State Grid Information and Telecommunication Branch,State Grid Corporation of China,Beijing 100761,China;State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]国家电网有限公司,北京100031 [2]国家电网有限公司信息通信分公司,北京100761 [3]北京邮电大学信息光子学与光通信国家重点实验室,北京100876

出　　处：《光通信技术》2021年第9期40-44,共5页Optical Communication Technology

基　　金：国家自然科学基金(批准号:61871056)资助。

摘　　要：为提升弹性光网络(EON)生存性,提出了基于带宽和持续时间的业务标记保护算法。该算法从业务的带宽和持续时间这2个维度对业务进行标记,将带宽较大、带宽较小的业务分别分配在编号较小、编号较大的频隙中,将持续时间较长、持续时间较短的业务分别分配在频谱两端、频谱中间的频隙中。仿真结果表明:与传统算法相比,该算法可以有效地降低EON的阻塞率,提高网络的可靠性。In order to improve the survivability of elastic optical network(EON), a service label protection algorithm based on bandwidth and holding time is proposed. The algorithm marks the service from the two dimensions of service bandwidth and holding time. The services with larger bandwidth and smaller bandwidth are allocated to the frequency slots with smaller number and larger number respectively, and the services with longer holding time and shorter holding time are allocated to the frequency slots at both ends of spectrum and in the middle of spectrum respectively. Simulation results show that compared with the traditional algorithm, this algorithm can effectively reduce the blocking probability of EON and improve the reliability of the network.

关 键 词：弹性光网络 生存性 保护 带宽 持续时间 

分 类 号：TN929.11[电子电信—通信与信息系统]