基于QUIC的拥塞控制算法动态切换机制

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关键词：拥塞控制；动态切换；QUIC；网络质量探测

中图分类号：TP319 文献标志码：A 文章编号：1001-3695（2025）07-030-2147-07

doi：10.19734/j. issn.1001-3695.2024.12.0499

Abstract：The traditional approachof staticallyconfiguringasinglecongestioncontrolalgorithmcannolongeradapttothedynamic changes in networksacrosstimeandregions，the dynamicswitching mechanism for congestion control algorithmshas drawnwiespreadatentionfromtheindustry.Toaddressissues suchaslownetwork detectionaccuracyand transmisionperformance fluctuations during dynamic switching，this paper studied the dynamic switching mechanismforcongestioncontrol algorithms basedon QUIC inthe wired network scenario.This mechanismfirstlyintroducedthereceiverbuferfactortoenhance thealgorithm’sadaptabilitytodiferentconfigurationsof thereeivingend.Secondly，itestablishedabotlenecklinkbufer detectionmodelbasedonBBRtoimprovethedetectionaccuracyofnetwork conditions.Finally，itrealizedthesmothswitching between BBRand CUBIC toachievea balance betweenperformanceimprovementand stabilityduring theswitching process.Experimental results demonstrate that this mechanism achieves a throughput gain coverage rate of 78%～87% in shallow bottleneck link buffer scenarios and 89%～95% in deep bottleneck link buffer scenarios.Compared with traditional modeling-basedalgorithms，thismechanismsignificantlyimproves thebandwidthutilizationinwirednetwork scenariosand shows good stability in both throughput and round-trip delay dimensions.

Key Words：congestion control;dynamic switching；QUIC；network quality detection

0引言

在数字化浪潮下，社交、在线办公、高清视频等多元网络应用不断涌现，对数据传输的高效性和稳定性提出了更高要求。（剩余17267字）