无线高时延环境下自适应信道带宽的TCP协议传输优化方法  

Channel Bandwidth Adaptive TCP Transmission Optimization Method in Wireless High Latency Environment

作　　者：李璞[1] 潘莉丽[1] 丁锐[1] LI Pu;PAN Lili;DING Rui(The 30th Research Institute of CETC,Chengdu 610041,China)

机构地区：[1]中国电子科技集团公司第三十研究所,成都610041

出　　处：《成都大学学报（自然科学版）》2021年第4期374-378,共5页Journal of Chengdu University（Natural Science Edition）

摘　　要：无线通信链路存在高时延、高抖动与高丢包率等特征,导致TCP协议在无线通信网络中的传输效果较差.针对TCP协议在高时延链路上存在的局限性,提出了一种能够实现自适应信道带宽的TCP协议传输优化方法,该方法利用协议代理的方式,并结合采用ACK欺骗、基于改进的TCP Vegas算法的发送控制以及通告窗口调整等方式,能够最大程度上适应无线链路的可用信道带宽.仿真结果表明,相比无线高时延环境下标准TCP协议传输速率,TCP协议传输优化方法的传输速率得到了有效提升,能够达到可用理论信道带宽的90%以上.The wireless communication link has the characteristics of high delay,high jitter,and high packet loss rate,which result in poor transmission effect of the TCP protocol in the wireless communication network.In order to solve this problem,we propose a TCP transmission optimization method,which can realize channel bandwidth adaptive.This method is based on protocol proxy,and uses ACK spoofing,dynamic transmission control based on advanced TCP Vegas algorithm,notification window adjustment,to adapt to the available channel bandwidth of the wireless link to the greatest extent.The simulation results show that,compared with the standard TCP transmission rate in the wireless high-latency environment,the TCP transmission rate is effectively enhanced by using the method proposed in this paper.The rate can reach more than 90%of the theoretical channel bandwidth.

关 键 词：高时延 带宽自适应 TCP协议传输优化 

分 类 号：TN915.04[电子电信—通信与信息系统]