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.
出处
《电子学报》
EI
CAS
CSCD
北大核心
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)
关键词
多路径并行传输
路径权值
接收缓存阻塞
吞吐量
concurrent multipath transfer
path weight
receive buffer blocking
throughput
