基于帧保序缓存的时间敏感网络FRER机制  

FRER mechanism based on frame preservation caching in time-sensitive networking

作　　者：蔡岳平[1] 胡绍柳 韩笑[1] CAI Yueping;HU Shaoliu;HAN Xiao(School of Microelectronics and Communication Engineering,Chongqing University,Chongqing 400030,China)

机构地区：[1]重庆大学微电子与通信工程学院,重庆400030

出　　处：《通信学报》2025年第3期164-173,共10页Journal on Communications

基　　金：国家重点研发计划基金资助项目(No.2020YFB1710900);重庆市技术创新与应用发展专项5G重大主题专项基金资助项目(No.cstc2019jscx-zdztzxX0023)。

摘　　要：为解决时间敏感网络帧复制与消除可靠性(FRER)机制的帧乱序导致缓存区溢出帧丢弃问题,提出了一种基于相交节点处帧保序缓存的FRER机制。该机制在FRER路径对的相交节点处通过帧到达事件和定时器超时事件提前对无序帧进行重排序,保证帧的有序转发。同时还对保序缓存区大小和定时器的设计进行了分析。仿真结果表明,与传统帧排序机制相比,所提机制有效降低了帧丢失率、平均时延及抖动。An improved FRER mechanism based on frame preservation caching at intersecting node(FRER-FPCIN)was proposed to solve the frame disorder problems,which resulted in the cache overflow and frame discarding.The disordered frames were resorted at the intersection nodes through frame arrival events and timer timeout events to ensure orderly forwarding of frames.The design of cache size and timer was also analyzed.Simulation results show that the proposed mechanism effectively reduces the frame loss rate,average frame delay and jitter compared with traditional frame ordering mechanisms.

关 键 词：时间敏感网络 帧复制与消除 保序缓存 

分 类 号：TN91[电子电信—通信与信息系统]