并行多路传输路径质量评估模型  

Path quality estimate model of concurrent multipath transfer

作　　者：陶洋[1] 周玄[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《计算机工程与设计》2015年第10期2622-2626,共5页Computer Engineering and Design

摘　　要：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。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,apath 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.

关 键 词：乱序 并行多路传输 路径质量评估模型 数据包吞吐量 重传 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]