【摘要】 目前,无线网络拥塞是当今计算机网络中存在的普遍现象,如何改进无线网络中TCP的拥塞性能成为现在研究的热点.利用新的端到端检测作为无线TCP改进方案,当端到端时延较大的时候,在传输层对丢失的数据做出响应之前,会导致更加冗长的往返时间估计,使得通信性能明显下降.在实验中发现IDD值的增长是网络发生拥塞的充要条件.XCP协议通过显式地通告发送端应该增加或降低多大的发送窗口来使各用户流公平共享网络资源,XCP-B来源于XCP,是无线网络中一个很成功的应用.更多还原

【Abstract】 Network congestion can be found everywhere in computer networks.Wireless TCP research,which uses the new end-to-end testing as TCP improvement plan,becomes important internet hot research field.The growth of IDD value is the necessary and sufficient condition of network collided,but the congestion control protocol based on explicit feedback will join the network congestion control inside routers.XCP protocol explicitly telling the sending end should be increased or reduced much of the sending window to make the user flow fair share network source.XCP-B is a very successful application of wireless network which is from XCP.更多还原