并行多路传输中数据调度算法的研究  

Research of data-scheduling algorithm in concurrent multipath transfer

作　　者：陶洋[1] 张传欣[1] 代堑 李攀[1] 

机构地区：[1]重庆邮电大学,重庆400065 [2]广州杰赛科技股份有限公司,广州510310

出　　处：《计算机应用研究》2013年第4期1155-1157,共3页Application Research of Computers

基　　金：重庆市科技攻关计划资助项目(CSTC;2009AB2245);重庆市教委科技资助项目(KJ090516)

摘　　要：针对传统并行多路传输中数据调度算法存在的问题,基于MPTCP协议,提出了带宽预测和前向时延的数据调度算法(data-scheduling algorithm using bandwidth estimation and forward trip-time,DA-BEFT)。该算法充分考虑子流间传输时延差较大的影响,结合性能好的重传选路策略,减轻接收端因数据乱序导致的缓存阻塞,提高整个连接吞吐量。通过仿真实验验证了DA-BEFT在子流时延差变化时能够提高带宽利用率,提高网络的吞吐量。This paper proposed a data-scheduling algorithm using bandwidth estimation and forward trip-time（DA-BEFT） combined with the existing works.It considered fully the negative impact caused by the significant difference of time delay along subflows,and reduced the receive buffer blocking caused by out-of-order data combined with optimal retransmission policy,and improved the entity connect-level throughput.Simulation results show that,DA-BEFT can effectively improve the utilization of available bandwidth resources and the throughput of the entire connection.

关 键 词：MPTCP 并行多路传输 缓存阻塞 数据调度 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]