發(fā)布時間：2019-01-07 08:46

【摘要】：多媒體業(yè)務(wù)在異構(gòu)網(wǎng)絡(luò)傳輸過程中,由于現(xiàn)有的QoS(Quality of Service)類映射方法存在靈活性不足的問題,從而降低了系統(tǒng)端到端效能。針對這個問題,該文在深入分析當(dāng)前的QoS類映射方法基礎(chǔ)上,結(jié)合用戶QoE(Quality of Experience)特點(diǎn),借助于網(wǎng)絡(luò)微積分理論,構(gòu)建了QoS類映射的數(shù)學(xué)分析模型,并進(jìn)行了理論分析�；谠摂�(shù)學(xué)分析模型,該文從用戶QoE角度提出了具有彈性的QoS類映射方法(Elastic QoS Class Mapping Method,EQCMM),該方法根據(jù)當(dāng)前網(wǎng)絡(luò)資源的使用情況,通過靈活地調(diào)整QoS類映射,充分利用網(wǎng)絡(luò)現(xiàn)有資源,提高了端到端帶寬資源的利用率,改善了系統(tǒng)端到端的效能。最后,通過仿真驗證了該方法的有效性。
[Abstract]:Due to the lack of flexibility of the existing QoS (Quality of Service) class mapping methods, the end-to-end performance of multimedia services is reduced in the process of heterogeneous network transmission. In order to solve this problem, based on the analysis of the current QoS class mapping method and the characteristics of user QoE (Quality of Experience), the mathematical analysis model of QoS class mapping is constructed with the help of network calculus theory, and the theoretical analysis is carried out. Based on the mathematical analysis model, this paper proposes a flexible QoS class mapping method (Elastic QoS Class Mapping Method,EQCMM) from the point of view of user QoE. The method adjusts QoS class mapping flexibly according to the current network resource usage. The utilization rate of end-to-end bandwidth resource is improved and the efficiency of end-to-end system is improved by making full use of existing network resources. Finally, the effectiveness of the method is verified by simulation.
【作者單位】： 南京郵電大學(xué)通信與信息工程學(xué)院;安徽師范大學(xué)物理與電子信息學(xué)院;
【基金】：國家自然科學(xué)基金(60972038,61271233,61101105,61001077) 教育部高等學(xué)校博士學(xué)科點(diǎn)專項科研基金(20103223110001,20113223120001) 2011年度江蘇省研究生培養(yǎng)創(chuàng)新工程基金(CXZZ11_0396)資助課題
【分類號】：TP393.09

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