基于ATM非对称线路下的TCP性能分析

Performance Analysis of TCP over ATM with Asymmetric Links

对ＡＴＭ非对称线路下ＴＣＰ的性能进行了分析，目的是考察链路的非对称性对ＴＣＰ性能的影响程度．通过定义非对称强度参数和建立模型，推导出在非对称链路下ＴＣＰ平均吞吐量的计算公式，并用仿真实验验证了推导的有效性．结果表明，链路的非对称性对ＴＣＰ的平均吞吐量有直接影响，在其它条件不变的情况下，平均吞吐量与非对称性参数近似成正比．

The TCP performance in the case of ATM asymmetric links is analgzed.Our goaal is to investigate the impact of asymmetry on TCP performace.By defining the asymmetry parameter and building the model, we deduce the formula to calculate the TCP perfomance.Effectiveness of the deduction is verified by simulation studies.We conclude that asymmetry has a direct impact on TCP performance and the mean throughput is linear to the asymmetry parameter under the same condition.