CAJ | 학술논문

多媒体业务在异构网络传输过程中,由于现有的QoS(Quality of Service)类映射方法存在灵活性不足的问题,从而降低了系统端到端效能.针对这个问题,该文在深入分析当前的QoS类映射方法基础上,结合用户QoE (Quality of Experience)特点,借助于网络微积分理论,构建了QoS类映射的数学分析模型,并进行了理论分析.基于该数学分析模型,该文从用户QoE角度提出了具有弹性的QoS类映射方法(Elastic QoS Class Mapping Method, EQCMM),该方法根据当前网络资源的使用情况,通过灵活地调整QoS类映射,充分利用网络现有资源,提高了端到端带宽资源的利用率,改善了系统端到端的效能.最后,通过仿真验证了该方法的有效性.
다매체업무재이구망락전수과정중,유우현유적QoS(Quality of Service)류영사방법존재령활성불족적문제,종이강저료계통단도단효능.침대저개문제,해문재심입분석당전적QoS류영사방법기출상,결합용호QoE (Quality of Experience)특점,차조우망락미적분이론,구건료QoS류영사적수학분석모형,병진행료이론분석.기우해수학분석모형,해문종용호QoE각도제출료구유탄성적QoS류영사방법(Elastic QoS Class Mapping Method, EQCMM),해방법근거당전망락자원적사용정황,통과령활지조정QoS류영사,충분이용망락현유자원,제고료단도단대관자원적이용솔,개선료계통단도단적효능.최후,통과방진험증료해방법적유효성.
To increase the end-to-end system efficiency with a flexible QoS (Quality of Service) class mapping scheme for transporting multimedia traffic over heterogeneous networks, by analyzing current QoS class mapping schemes which lack flexibility without considering user’s QoE (Quality of Experience), an analytical model is developed for end-to-end QoS provisioning based on network calculus theory. Based on this model, the paper derives an Elastic QoS Class Mapping Method (EQCMM) which considers user’s QoE. With EQCMM, the result of QoS class mapping can be adjusted elastically according to available network resources, in order to achieve higher end-to-end system efficiency. Finally, simulation results are given to demonstrate the effectiveness of the proposed method.