In this paper, we present a new analytical model for TCP Reno, and thismethod can also be used in other versions of TCP. The first order two-state Markovian model is usedto describe the wireless link, so as to deal wi...In this paper, we present a new analytical model for TCP Reno, and thismethod can also be used in other versions of TCP. The first order two-state Markovian model is usedto describe the wireless link, so as to deal with the burst error in wireless links very well. Thetimeout mechanism of TCP is also considered and a geometric method describes the exponential growthof TCP timeout. Also this method is effective for the study of the growth of TCP transmissionwindow. Analytical results indicate that this model is effective.展开更多
A discrete time feedback control system model based on a multi-router network has been presented. The model can be described by a set of recurrence equations. The numerical examples about the bifurcation of average an...A discrete time feedback control system model based on a multi-router network has been presented. The model can be described by a set of recurrence equations. The numerical examples about the bifurcation of average and instantaneous queue size along with the variety of RED control parameter are shown. The simulate experiments about those of the RED control parameters are also presented. All of these results show that instability in TCP-Reno traffic under RED can be induced by the inherent nonlinear behavior of the network.展开更多
本文提出了一种能够通过带宽估计来判断无线链路报文段丢失原因,并采取相应拥塞控制机制的无线TCP算法-TCP_LD(TCP Loss Detection)。文章采用Padhye模型的建模方法,推导了TCP_LD的稳态流量模型。理论分析和仿真结果说明,TCP_LD能够有...本文提出了一种能够通过带宽估计来判断无线链路报文段丢失原因,并采取相应拥塞控制机制的无线TCP算法-TCP_LD(TCP Loss Detection)。文章采用Padhye模型的建模方法,推导了TCP_LD的稳态流量模型。理论分析和仿真结果说明,TCP_LD能够有效的区分出发生报文段丢失的原因,即拥塞丢失或者链路突发差错,从而提高系统的流量。展开更多
文摘In this paper, we present a new analytical model for TCP Reno, and thismethod can also be used in other versions of TCP. The first order two-state Markovian model is usedto describe the wireless link, so as to deal with the burst error in wireless links very well. Thetimeout mechanism of TCP is also considered and a geometric method describes the exponential growthof TCP timeout. Also this method is effective for the study of the growth of TCP transmissionwindow. Analytical results indicate that this model is effective.
文摘A discrete time feedback control system model based on a multi-router network has been presented. The model can be described by a set of recurrence equations. The numerical examples about the bifurcation of average and instantaneous queue size along with the variety of RED control parameter are shown. The simulate experiments about those of the RED control parameters are also presented. All of these results show that instability in TCP-Reno traffic under RED can be induced by the inherent nonlinear behavior of the network.
文摘本文提出了一种能够通过带宽估计来判断无线链路报文段丢失原因,并采取相应拥塞控制机制的无线TCP算法-TCP_LD(TCP Loss Detection)。文章采用Padhye模型的建模方法,推导了TCP_LD的稳态流量模型。理论分析和仿真结果说明,TCP_LD能够有效的区分出发生报文段丢失的原因,即拥塞丢失或者链路突发差错,从而提高系统的流量。
