RTX_PW:一种基于路径权值的CMT重传策略  

RTX_PW:A Retransmission Strategy of CMT Using Path Weight

作　　者：刘杰民[1,2] 王兴伟[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110819 [2]东北大学秦皇岛分校计算机与通信工程学院,河北秦皇岛066004

出　　处：《电子学报》2013年第6期1108-1113,共6页Acta Electronica Sinica

基　　金：国家自然科学基金(No.61070162;No.61225012)

摘　　要：针对多路径并行传输(CMT)情况下当路径质量存在较大差异时,部分路径传输优于全部路径的问题,建立了路径的平均吞吐量与丢包率和延迟的拟合关系,提出了一种基于路径权值的CMT重传策略—RTX-PW,该策略可有效减缓接收缓存阻塞,提高多路径并行传输的吞吐量.最后,仿真结果表明RTX-PW的性能优于传统重传策略RTX_CWND和RTX_SSTHRESH.According to the problem that partial path transmission is better than the full path when there is a big difference in the quality of the path in concurrent multipath transfer（CMT）environment,the fitting relationship of the path average throughput, packet loss rate and delay is established.A retransmission strategy named RTX_ PW using path weight is proposed,and this strategy can decrease the receive buffer block and improve the throughput of concurrent multipath transfer.Finally,simulation results show the performance of RTX_ PW outperforms that of the traditional retransmission strategies of RTX_ CWND and RTX_ SSTHRESH.

关 键 词：多路径并行传输 路径权值 接收缓存阻塞 吞吐量 

分 类 号：TP393.4[自动化与计算机技术—计算机应用技术]