沈阳航空航天大学学报2024，Vol.41Issue(1)：27-35,9.DOI:10.3969/j.issn.2095-1248.2024.01.004
基于RTT更新机制的BBR拥塞预防控制算法
BBR congestion prevention and control algorithm based on RTT updating mechanism
摘要
Abstract
The classic BBR congestion control algorithm lacks timely adjustment of sending behavior and packet quantity during link congestion,which can easily exacerbate the degree of congestion and result in significant delays.Through analysis,the main root cause of this issue is the hysteresis in BBR congestion detection.To address this problem,the BBR congestion prediction and avoidance(BBR-CPA)algorithm was proposed.This algorithm started from the round-trip time update mechanism of BBR,dynamically detected the bottleneck path,and predicted the congestion state of the link based on RTT data,thus reduced the packet quantity in advance to alleviate potential congestion in the link.Dur-ing operation,it records the bottleneck path's bandwidth data and performed mean processing on band-width estimation,accelerated the convergence of the link to the optimal state.Experimental results show that compared to the classic BBR algorithm and the latest BBR-S and BBR-ACD algorithms,BBR-CPA achieve an average delay reduction of 56%,44%,and 8%.It effectively eliminates link con-gestion and reduces the resulting delays.关键词
拥塞检测/滞后性/拥塞预防/RTT更新/时延Key words
congestion detection/hysteresis/congestion prediction/RTT updating/delay分类
信息技术与安全科学引用本文复制引用
杨华,梁剑辉,吴杰宏..基于RTT更新机制的BBR拥塞预防控制算法[J].沈阳航空航天大学学报,2024,41(1):27-35,9.基金项目
国家自然科学基金(项目编号:62376165) （项目编号:62376165）
