【摘要】：針對車載信息系統(tǒng)中,級聯(lián)交換機網(wǎng)絡(luò)的數(shù)據(jù)包傳輸延遲時間計算缺乏形式化的建模和計算方法,為了分析跨交換機的數(shù)據(jù)傳輸對節(jié)點間數(shù)據(jù)傳輸延遲的影響,將級聯(lián)交換機等效為排隊系統(tǒng),并在此基礎(chǔ)上提出了一種級聯(lián)M/M/1排隊模型,該模型針對級聯(lián)交換機網(wǎng)絡(luò),對傳輸負載和交換機服務(wù)率取不同比值時的數(shù)據(jù)包延遲時間進行分析,求出定性和定量解。仿真實驗結(jié)果表明,當網(wǎng)絡(luò)負載較重時數(shù)據(jù)包在第二個交換機中的延遲時間不會顯著增加,其結(jié)果可以有效地支撐車載信息網(wǎng)絡(luò)的開發(fā)。
[Abstract]:In view of the lack of formal modeling and calculation method for packet transmission delay calculation in cascaded switch networks in vehicle-borne information systems, the effect of data transmission across switches on data transmission delays between nodes is analyzed. The cascade switch is equivalent to a queueing system, and on this basis, a cascade M/1 queuing model is proposed. The model analyzes the packet delay time when the transmission load and the switch service ratio are taken at different ratios for the cascaded switch network. The qualitative and quantitative solutions are obtained. The simulation results show that the delay time of packet in the second switch is not significantly increased when the network load is heavy, and the result can effectively support the development of on-board information network.
【作者單位】： 西北工業(yè)大學(xué)計算機學(xué)院;西安工業(yè)大學(xué)電子信息工程學(xué)院;中航工業(yè)計算所第15研究室;
【基金】：航空科學(xué)基金(2014ZC31)資助
【分類號】：TN915.05;U463.6
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本文編號：2271100