光传输网中针对突发业务的低时延路由方案  

The Low Latency Routing Solution for Burst Services in Optical Transport Network

作　　者：周鹏飞 苑超 付振霄 王一蒙 赵永利 ZHOU Pengfei;YUAN Chao;FU Zhenxiao;WANG Yimeng;ZHAO Yongli(School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China;State Grid Laiwu Power Supply Company,State Grid Shandong Electric Power Company,Jinan 250102,China;Economic and Technological Research Institute,State Grid Shandong Electric Power Company,Jinan 250022,China)

机构地区：[1]北京邮电大学电子工程学院,北京100876 [2]国网山东省电力公司国网莱芜供电公司,济南250102 [3]国网山东省电力公司国网山东省电力公司经济技术研究院,济南250022

出　　处：《北京邮电大学学报》2025年第1期92-99,共8页Journal of Beijing University of Posts and Telecommunications

基　　金：国家电网公司科技项目(5108-202218280A-2-416-XG)。

摘　　要：为解决突发业务带来的全网业务阻塞率升高和平均时延增加的问题,建立了光传输网中突发业务问题模型。模型通过调节最大带宽占用率的大小来权衡业务在突发和非突发状态下的阻塞率,并确定了减小突发业务阻塞率和平均时延的优化目标函数。根据模型提出了基于时延和最大带宽占用率的联合优化算法,以K条最短路径算法为基础,以链路剩余带宽和传输时延为约束和优化目标,在得到的候选路径中选择所提模型中确立的优化目标函数最小且带宽资源足够的路径传输业务。实验结果表明,与其他预留带宽类算法相比,所提算法的总体业务阻塞率最低,最高比基于预留带宽的多路传输算法低18.16%;业务平均时延一直保持较低水平,最高比基于预留带宽的多路传输算法低0.36 ms;所提算法达到了对突发业务传输时延及阻塞率的优化。To solve the problem of increased network service blocking rate and average latency caused by burst service,a burst traffic problem model in optical transport network was established.By adjusting the maximum bandwidth occupancy rate,the blocking rate in burst and non-burst states is balanced.The model also sets an optimization objective function to reduce the burst blocking rate and the average latency.A joint optimization algorithm based on latency and maximum bandwidth occupancy rate is proposed in the model.This algorithm is based on the K-shortest paths(KSP)algorithm with remaining link bandwidth and transmission latency as constraints and optimization objectives.Among the candidate paths obtained,the path with the minimum optimization objective function established in the proposed model and sufficient bandwidth resources is selected to transmit service.The experimental results show that compared with other reserved bandwidth algorithms,the proposed algorithm has the lowest traffic blocking rate,up to 18.16%reduction compared to the reserved bandwidth-based multipath transmission algorithm.Moreover,the average service latency has always remained low up to 0.36 ms reduction compared to the reserved bandwidth-based multipath transmission algorithm.The proposed algorithm achieves optimization of transmission latency and blocking rate for burst services.

关 键 词：光传输网 突发业务 阻塞率 时延 

分 类 号：TP929.11[自动化与计算机技术]