一种改进的无线网络TCP拥塞控制算法  

Improved TCP Congestion Control Algorithm for Wireless Network

作　　者：冯慧芳[1] 刘磊[1] 

机构地区：[1]西北师范大学数学与信息科学学院,兰州730070

出　　处：《计算机工程》2012年第6期25-27,31,共4页Computer Engineering

基　　金：国家自然科学基金资助项目(61072063);甘肃省科技计划基金资助项目(1107RJZA234);甘肃省教育厅科研基金资助项目(0901-03)

摘　　要：传统基于有线环境的传输控制协议(TCP)技术无法适应链路质量相对较差的无线环境。为此,提出一种改进的对数增加自适应减少(NewLIAD)算法。在慢启动阶段根据带宽确定最优拥塞窗口,在网络拥塞阶段动态减少拥塞窗口,以保证系统的整体吞吐量。仿真结果表明,该算法有较好的发送速率平滑性,能减少数据抖动,提升无线网络的TCP性能。As the particularities of transmission medium of the wireless networks, the traditional Transmission Control Protocol（TCP）-based technology degrades the performance of wireless network with poor quality of transmission link. In order to improve the TCP performance of wireless networks, an enhanced congestion control algorithm（NewLIAD） is proposed, which can figure out the optimal congestion windows by the bandwidth in slow start phase, and reduce the congestion windows dynamically in network congestion phase. Simulation results show that the proposed scheme can decrease the fluctuation of sending data and improve the TCP performance efficiently in wireless network.

关 键 词：无线网络 拥塞控制 传输控制协议 性能提升 网络模拟 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]