现提出了一种适合有线/无线混合网络的传输控制改进协议WNR-TCP。WNR-TCP使用数据包的相对正向延迟来检测网络的拥塞状况,即通过在发送端检测相对正向延迟的变化来判断链路是否发生拥塞进而区分丢包原因;当统计结果显示丢包是因为拥塞引起的,发送方则调用传统的拥塞控制机制,否则丢包则是由无线链路造成的,那么只需要重传丢失的分组而无需减小发送速率。 Now proposed a suitable wired / wireless hybrid transmission control protocol WNR-TCP. WNR-TCP uses the packet’s relative forward delay to detect network congestion. That is, it determines whether the link is congested or not by distinguishing the reason of packet loss by detecting the change of relative forward delay at the sending end. When the statistics show that packet loss is Because of congestion, the sender calls the traditional congestion control mechanism, otherwise the packet loss is caused by the wireless link, then only need to retransmit the lost packet without reducing the sending rate.