Heterogeneous Network Based On Bandwidth Estimation Of Tcp Congestion Control Mechanisms

Recently, with the development of mobile communication technology and Internet, wireless technology become more and more important in the Internet of all over the world. Mobile nodes and its wireless communication links are going to be an important part of Internet in the future.TCP Protocol used widely now is an end to end transmission protocol, which is designed for reliable communication between network nodes. The arithmetic of congestion control embedded in TCP can effectively improve efficiency of network transmission and prevent network collapse. The arithmetic assumes that the links are quite credible, the loss and delay of segments are made by network congestion. But TCP used well in wired network does not work well in the wireless network, because the precondition of credibility in links of the wired network does not occur in wireless network, that is to say, the loss and delay of segments are made not surely by network congestion but the characteristics of the wireless links: high bit error, long delay of transmission, frequent move of the terminals, long latent period of switch and so on. So it must improve transmission control protocols used before or put forward the new protocols in order to keep high efficiency of communication and good throughput of network in the wireless network.Now, many schemes are designed to improve the performance of...