基于流量类型优先级的工业无源光网络上行资源分配
Traffic-Type-Priority-Based Upstream Resource Allocation for Industrial Passive Optical Networks
于耀翔1
作者信息
- 1. 北京邮电大学电子工程学院，北京 100876
- 折叠
摘要
针对工业互联网时间敏感业务在无源光网络（Passive Optical Network, PON）上行传输中对低时延、低抖动和差异化保障需求，本文提出一种基于流量类型优先级的整数线性规划带宽资源分配方法。首先，在设备侧工业网关引入流量整形机制，将原始工业业务抽象为具有周期、到达时间、传输窗口大小、时延容忍和抖动容忍等参数的工业汇聚流；随后，基于超周期窗口规划思想建立PON上行传输窗口调度模型，并设计ILP-OBJ1、ILP-OBJ2和ILP-OBJ3三种方案进行对比。仿真结果表明，ILP-OBJ2能够有效降低上行调度时延，其中等时流最大时延和平均时延相较ILP-OBJ1分别降低约78.6%和66.9%；ILP-OBJ3通过"先等时流、后循环流"的分阶段调度机制，在中高负载场景下具有更高的调度成功率。结果表明，所提方法能够提升工业互联网PON上行资源分配的确定性和业务适配性。
Abstract
To meet the requirements of low latency, low jitter, and differentiated service guarantees for time-sensitive traffic in the upstream transmission of Passive Optical Networks (PONs) in industrial Internet scenarios, this paper proposes an integer linear programming-based bandwidth resource allocation method with traffic-type priority awareness. First, a traffic shaping mechanism is introduced at the device-side industrial gateway, where raw industrial traffic is abstracted into industrial aggregated flows characterized by parameters such as period, arrival time, transmission window size, delay tolerance, and jitter tolerance. Then, based on the hyperperiod-based window planning approach, a PON upstream transmission window scheduling model is established, and three schemes, namely ILP-OBJ1, ILP-OBJ2, and ILP-OBJ3, are designed for comparison. Simulation results show that ILP-OBJ2 can effectively reduce the upstream scheduling delay, with the maximum delay and average delay of isochronous flows reduced by approximately 78.6% and 66.9%, respectively, compared with ILP-OBJ1. ILP-OBJ3 adopts a phased scheduling mechanism of "isochronous flows first, cyclic flows later," achieving a higher scheduling success rate under medium- and high-load scenarios. The results demonstrate that the proposed method can improve the determinism and service adaptability of PON upstream resource allocation in industrial Internet scenarios.关键词
光纤通信/工业互联网/无源光网络/整数线性规划/带宽资源分配/Key words
Optical Fiber Communication/Industrial Internet/Passive Optical Network/Integer Linear Programming/Bandwidth Resource Allocation引用本文复制引用
于耀翔.基于流量类型优先级的工业无源光网络上行资源分配[EB/OL].(2026-06-18)[2026-06-20].http://www.paper.edu.cn/releasepaper/content/202606-56.学科分类
光电子技术/通信
