基于缓冲区反馈的差异化多路径并发传输数据分配算法  

A Data Distribution Algorithm with Buffer Feedback in CMT over Diversity Paths

作　　者：杜文峰[1] 吴真[1] 李坚强[1] 

机构地区：[1]深圳大学计算机与软件学院,广东深圳518060

出　　处：《小型微型计算机系统》2015年第2期261-265,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61003271;61202159)资助;深圳市战略新兴产业发展专项资金项目(CXZZ20120820155332951)资助

摘　　要：多路径并发传输模型在差异化路径中会出现严重的数据包乱序现象,导致接收端缓冲区阻塞,极大地降低了偶联的整体传输性能.本文在分析了影响路径性能因素的基础上,给出了传输路径性能评估模型,并提出了一种基于缓冲区反馈的差异化多路径并发传输数据分配算法.该算法以缓冲区反馈来动态调节路径的发送比例,减少传输性能差的路径对整体吞吐量的影响.分析和实现结果表明,本算法能够比默认的轮询数据分配算法取得更好的性能.The performance of CMT degrades remarkably when a large quantity of out-of-order packets are blocked in the receive buff- er due to the discrepancy of paths in terms of performance. Based on the analysis of different network configurations,a performance e- valuation model has been proposed. Meanwhile, to improve the performance of CMT over diversity paths, a data distribution algorithm has been proposed. This algorithm dynamically adjusts the transmission ratio with the feedback of receiver buffer and reduces the im- pact of path with bad performance. The result of analysis and simulation reveal the performance of our scheme outperforms than the o- riginal round-robin scheme.

关 键 词：多路径并发传输 差异化路径 数据分配 缓冲区反馈 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]