CAJ | 학술논문

研究了无线网络端到端分组丢失和编码纠错对TCP协议工作过程的影响机制，基于三维Markov链建模描述TCP拥塞窗口和可用窗口的变迁过程，在忽略慢启动阶段的条件下，以最大窗口尺寸、端到端分组丢失率和编码冗余系数为输入参数，通过数值计算求解编码TCP的吞吐率，据此定量分析影响编码TCP性能的因素。基于NS2的模拟实验结果表明基于Markov链的数值计算结果具有较高的准确度。
연구료무선망락단도단분조주실화편마규착대TCP협의공작과정적영향궤제，기우삼유Markov련건모묘술TCP옹새창구화가용창구적변천과정，재홀략만계동계단적조건하，이최대창구척촌、단도단분조주실솔화편마용여계수위수입삼수，통과수치계산구해편마TCP적탄토솔，거차정량분석영향편마TCP성능적인소。기우NS2적모의실험결과표명기우Markov련적수치계산결과구유교고적준학도。
The evolutionary process of network coded TCP against lossy links and error correcting coding were analyzed. Ignoring the slow start phase, the state transition process of congestion window and available window was described based on a three-dimension Markov chain model. With maximum window size, end-to-end packet loss rate and redun-dancy factor as input parameters, throughput of network coded TCP was calculated to carry quantitative analysis of fac-tors affecting the network coded TCP performance in the numerical analysis model. Simulation results based on the NS2 simulator show that the numerical analysis model achieves fairly high accuracy.