多路径传输中最佳路径选取研究

发布时间：2018-05-07 05:49

本文选题：多路径传输 + MPTCP　；参考：《海南大学》2017年硕士论文

【摘要】：本文研究了在真实网络环境下一NorNet测试平台上MPTCP(Multi-pathTCP)多路径传输协议的路径管理与最佳路径选取的性能。然而,当前网络环境较为复杂,如何对网络通信协议的相关参数进行配置,获得最高通信吞吐量,是当前研究的重点。本文重定义网络增益效益(B)的内涵,并观察了不同的路径管理算法、拥塞控制算法以及路径本身的性能、IPv4/IPv6技术对网络通信性能的影响,以NorNet国际测试床为基础开展了研究及测试,设计了针对多路径传输协议MPTCP的多个测试场景,对其测试分析,用B对其进行分析并确定最佳路径。本文主要结论可归纳如下:1.在进行多路径传输时,初始路径的性能影响传输的吞吐量。2.路径管理算法对多路径传输的网络性能影响很大。3.拥塞控制算法的不同,对多路径传输网络性能有影响。4.IPv6技术下进行多路径传输明显受到当地网络供应商的带宽限制。为了选出最佳路径进行通信,本文根据实验结果分析提出以下几点建议:1.不能无限制的加入新的子流,应对新的子路性能进行分析,当子流性能较好,满足B大于0时,即加入已建立连接可以增加网络吞吐量,可以加入进行多路径传输;对于B值等于甚至小于0的子流,应当作备用子流处理。2.鉴于目前仅有4种路径管理算法,因此根据实验结果分析,推荐使用"fullmesh"路径管理算法,可避免初始路径性能太差带来的影响。3.根据对拥塞控制算法的分析,本文在一般情况下推荐使用Cubic拥塞控制算法,因为它更具有灵活性,对子流拥塞窗口的控制更自如。当对公平性要求较高时,推荐使用OLIA算法。4.经过上述分析,推荐使用IPv6技术。本文通过总结实验分析,从中得到了 MPTCP多路径传输中的最佳路径选取规律。
[Abstract]:In this paper, we study the performance of path management and optimal path selection of MPT NorNet Multi-pathTCP-based multipath transport protocol on a real network environment. However, the current network environment is more complex, how to configure the related parameters of the network communication protocol to obtain the highest communication throughput, is the focus of current research. In this paper, the connotation of network gain benefit is redefined, and the influence of different path management algorithms, congestion control algorithms and the performance of the path itself on the network communication performance is observed. Based on the NorNet international test bed, the research and test are carried out, and several test scenarios for MPTCP are designed. The test analysis is carried out, and the best path is determined by B analysis. The main conclusions of this paper can be summarized as follows: 1. In multipath transmission, the performance of the initial path affects the throughput. 2. 2. The path management algorithm has a great influence on the network performance of multipath transmission. Different congestion control algorithms have an impact on the performance of multipath transmission networks. 4. The bandwidth of local network providers is obviously limited for multipath transmission under IPv6 technology. In order to select the best path for communication, this paper puts forward the following suggestions: 1: 1 based on the analysis of experimental results. The new sub-stream can not be added without restriction. When the performance of the new sub-stream is better and B is more than 0, adding the established connection can increase the network throughput and multipath transmission. For substreams whose B value is equal to or even less than 0, an alternate substream treatment. 2. Since there are only four path management algorithms at present, "fullmesh" path management algorithm is recommended according to the experimental results, which can avoid the impact of the poor performance of the initial path. According to the analysis of congestion control algorithm, this paper recommends the use of Cubic congestion control algorithm in general, because it is more flexible and more comfortable to control the sub-flow congestion window. When the fairness requirement is high, OLIA algorithm. 4. 4 is recommended. After the above analysis, the use of IPv6 technology is recommended. In this paper, the rule of optimal path selection in MPTCP multipath transmission is obtained by summing up the experimental analysis.
【学位授予单位】：海南大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.0

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