计算机工程与设计
計算機工程與設計
계산궤공정여설계
Computer Engineering and Design
2015年
10期
2622-2626
,共5页
乱序%并行多路传输%路径质量评估模型%数据包吞吐量%重传
亂序%併行多路傳輸%路徑質量評估模型%數據包吞吐量%重傳
란서%병행다로전수%로경질량평고모형%수거포탄토량%중전
out of order%concurrent multipath transfer%path quality estimate model%packet throughput%retransmission
当前配备多个网络接口的移动设备可以通过利用多个路径并行传输来提高吞吐量，但不同路径的时延和带宽会导致其数据在接收端的乱序，降低系统的吞吐量，增加系统的重传率。针对以上问题，提出一种并行多路传输路径质量评估模型。定期监控并分析每条路径的数据处理能力，根据相关信息，评估、计算路径的质量，选择相应的路径进行传输。仿真结果表明，通过该模型，系统的数据包吞吐量有较高提升，重传率明显下降。
噹前配備多箇網絡接口的移動設備可以通過利用多箇路徑併行傳輸來提高吞吐量，但不同路徑的時延和帶寬會導緻其數據在接收耑的亂序，降低繫統的吞吐量，增加繫統的重傳率。針對以上問題，提齣一種併行多路傳輸路徑質量評估模型。定期鑑控併分析每條路徑的數據處理能力，根據相關信息，評估、計算路徑的質量，選擇相應的路徑進行傳輸。倣真結果錶明，通過該模型，繫統的數據包吞吐量有較高提升，重傳率明顯下降。
당전배비다개망락접구적이동설비가이통과이용다개로경병행전수래제고탄토량，단불동로경적시연화대관회도치기수거재접수단적란서，강저계통적탄토량，증가계통적중전솔。침대이상문제，제출일충병행다로전수로경질량평고모형。정기감공병분석매조로경적수거처리능력，근거상관신식，평고、계산로경적질량，선택상응적로경진행전수。방진결과표명，통과해모형，계통적수거포탄토량유교고제승，중전솔명현하강。
Currently ,the mobile devices equipped with multiple network interfaces can increase their throughput by making use of concurrent transmissions over multiple paths .However ,different bandwidth and delay of multiple paths determine data to be received out of order ,which results in degradation of throughput and increase of retransmission .Aiming at the problems ,a path quality estimate model (PQEM ) of concurrent multipath transfer was introduced ,which monitored and analyzed each path’s data handling capability regularly ,then calculated and evaluated the quality of path according to the related information to select the corresponding path .Simulation results show that the packet throughput of system is better improved and retransmission rate is lowered using the model .
