激光与光电子学进展, 2019, 56 (13): 130602, 网络出版: 2019-07-11
基于频谱位示图的联合优化路由频谱分配算法 下载: 728次
Joint-Optimization Routing and Spectrum Allocation Algorithm Based on Spectrum Bit Diagram
光通信 路由频谱分配 提前计算 频谱位示图 低时延 optical communications routing spectrum allocation preliminary calculation spectrum bit diagram low delay
摘要
为提高频谱利用率,同时减少光路的建立时延和阻塞率,提出了一种基于时延和频谱利用率联合优化路由频谱分配 (CODS-RSA)算法。CODS-RSA算法在提前计算期间,利用提前计算控制模型、频谱位示图和最佳分配算法,建立了光连接请求业务数据库。CODS-RSA算法根据光连接请求业务数据库和实时更新计算结果,进行了路由频谱分配(RSA)。仿真结果表明,CODS-RSA算法提前计算减少了光路的建立时延,频谱位示图和最佳分配算法的分配频谱提高了频谱利用率,也相对降低了业务请求的阻塞率。
Abstract
To improve the spectrum utilization rate and reduce the establishment delay and blocking rate of an optical path, a joint-optimization routing spectrum allocation (CODS-RSA) algorithm based on the delay and spectrum utilization rate is proposed herein. The CODS-RSA algorithm establishes an optical connection request service database by calculating a control model, a spectrum bit diagram, and an optimal allocation algorithm during a preliminary calculation period. Then, the CODS-RSA algorithm performs routing spectrum allocation based on the optical connection request service database and real-time update calculation. The simulation results show that preliminary calculations of the CODS-RSA algorithm reduce the optical path’s establishment delay; the allocated spectra of optimal allocation algorithm and the spectrum bit diagram improve the spectrum utilization; the service request’s blocking rate is relatively reduced as well.
张曙光, 李正贤, 王伟. 基于频谱位示图的联合优化路由频谱分配算法[J]. 激光与光电子学进展, 2019, 56(13): 130602. Shuguang Zhang, Zhengxian Li, Wei Wang. Joint-Optimization Routing and Spectrum Allocation Algorithm Based on Spectrum Bit Diagram[J]. Laser & Optoelectronics Progress, 2019, 56(13): 130602.