基于光电转换装置成本感知的RWA算法  

RWA algorithm based on cost of photoelectric conversion device

作　　者：胡道允 杨振泰 陆钱春[1] 齐进[1] HU Daoyun;YANG Zhentai;LU Qianchun;QI Jin(ZTE Corporation,Nanjing 210012,China)

机构地区：[1]中兴通讯股份有限公司,江苏南京210012

出　　处：《电信科学》2020年第4期107-114,共8页Telecommunications Science

摘　　要：近年来,运营商通过在ROADM设备上部署光电转换装置实现了光传输网络中业务的细粒度调度,从而提升频谱资源的利用率。但是光电转换装置价格昂贵,导致了网络部署成本的增加。针对光传输网络中业务和光模块的部署问题进行了ILP建模,并证明其为NP-hard问题。提出了两种基于光电转换装置成本感知的路由和波长分配算法:OEO-RWA算法和SA-RWA算法,并通过仿真证明两种算法既能够保证业务的细粒度调度,又能够减少光电转换装置数量,降低网络部署成本。Over the past decade, carrier operator implement fine-grained traffic scheduling in optical transport network(OTN) by deploying optical-electric conversion(OEO) devices on ROADM, which can improve the spectrum utilization. However, OEO device is very expensive, which will increase the CAPEX and OPEX of carrier operator. A problem about traffic scheduling and the deployment of OEO devices in OTN was proposed. Then, the ILP model of this problem was built and it was proved NP-hard. Additionally, two novel algorithms named OEO-RWA and SA-RWA were proposed. At last, these algorithms were demonstrated can not only ensure flexibility of traffic scheduling, but also can reduce the number of OEO device through simulation.

关 键 词：光传输网络 ROADM 光电转换 路由和波长分配 成本 

分 类 号：TN913.7[电子电信—通信与信息系统]