基于换层方式的具有有限缓冲区的动态双层网络的交通动态

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中图分类号：U491.13;TP393.08 文献标志码：A 文章编号：1002-4026（2025）06-0125-08

开放科学（资源服务）标志码（OSID）

Traffic dynamics of a finite-buffer two-layer network

via layer-switchingmechanisms

SUN Mingming，LING Xiang

（College of Automotive and Transportation Engineering，Hefei UniversityofTechnology，Hefei 23009，China）

Abstract ：To aleviate queue lengthsat botom nodes intwo-layer networks，reduce data packet travel time，andimprove overallnetwork traffceficiency，thispaperexaminesinformationpackettransfermechanismsbetweennetwork layers.The studyinvestigates how layer judgment frequencyandnetwork couplingstrength influence transmissioncapabityand stabilityindynamicand staticcoupled networks withlimitedcachecapacity.Wecompare theoperational eficiencyof two layer-switching approaches byanalyzing packet ossrates，traficdensity，and average travel times.Network stabilityand reliabilityaremeasuredusing lossthresholdvalues.Resultsindicatethatintwo-layerdynamicnetworks withlimitedbuffer space，boththelayer-switchingmethodologyandswitchingprobabilitysignificantlyafectransmissionefficiency.Byjontly optimizing the layer-switchingapproach and inter-layer edge distribution，the network's loss thresholdcan be increased， enhancing stable information transmission capacity and alleviating network congestion.

Keywords ：two-layer network;dynamic network;layer-switching probabity;loss threshold;packet generation rate;buffer

人员或物体在城市交通中移动，需要使用交通网络，交通网络一般用复杂网络[1]来表示，研究复杂网络中的交通动态对于确保现实交通系统可行性有一定意义[2]。（剩余9955字）