【摘要】：針對(duì)車(chē)載信息系統(tǒng)中,級(jí)聯(lián)交換機(jī)網(wǎng)絡(luò)的數(shù)據(jù)包傳輸延遲時(shí)間計(jì)算缺乏形式化的建模和計(jì)算方法,為了分析跨交換機(jī)的數(shù)據(jù)傳輸對(duì)節(jié)點(diǎn)間數(shù)據(jù)傳輸延遲的影響,將級(jí)聯(lián)交換機(jī)等效為排隊(duì)系統(tǒng),并在此基礎(chǔ)上提出了一種級(jí)聯(lián)M/M/1排隊(duì)模型,該模型針對(duì)級(jí)聯(lián)交換機(jī)網(wǎng)絡(luò),對(duì)傳輸負(fù)載和交換機(jī)服務(wù)率取不同比值時(shí)的數(shù)據(jù)包延遲時(shí)間進(jìn)行分析,求出定性和定量解。仿真實(shí)驗(yàn)結(jié)果表明,當(dāng)網(wǎng)絡(luò)負(fù)載較重時(shí)數(shù)據(jù)包在第二個(gè)交換機(jī)中的延遲時(shí)間不會(huì)顯著增加,其結(jié)果可以有效地支撐車(chē)載信息網(wǎng)絡(luò)的開(kāi)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(jì)算機(jī)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(jì)算所第15研究室;
【基金】：航空科學(xué)基金(2014ZC31)資助
【分類(lèi)號(hào)】：TN915.05;U463.6
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本文編號(hào)：2271100