摘要
对采用TCP协议传输数据的实现过程及其在无线网络中可能遇到的问题进行了描述,针对这些问题提出了一种算法对无线链路下一时刻的误码率进行了估计,根据这个估计对TCP进行了修改以自适应选取合适的TCP报文段尺寸来传输数据。在网络仿真器(NS2)中仿真一个误码率时变的无线信道,把修改后的TCP置于NS仿真环境中进行仿真,实验结果表明了该改进方法有效。
The achieving process of TCP and the problems which TCP may encounter in wireless network were presented. Then an algorithm was presented to predict the next bit error rate of wireless link. Based on the prediction, the TCP was modified to adaptively select appropriate Maximum Segment Size （MSS） to transport data. By using NS2, a wireless channel with variable bit error rate was simulated. Last, a simulation about the modified TCP was done, and its result indicated the effectiveness of the modification.
出处
《计算机应用》
CSCD
北大核心
2007年第2期282-284,共3页
journal of Computer Applications
关键词
往返时间
吞吐量
最大报文段尺寸
拥塞窗口
RTT
throughput
Maximum Segment Size （MSS）
Congestion Window （cwnd）
