CAJ | 학술논문

针对提高网络资源利用率,对TCP Reno拥塞控制算法进行改进,为实施拥塞优化控制,提出一种改进的拥塞控制算法.为判断该算法对所有数据流是否公平,在对其正确件和公平性进行理论分析后,构建NS2仿真模型并进行仿真,由于仿真结果数据量大,常规方法分析较为困难,故将仿真结果转换为数据库文件进行分析,该方法可操作性强,具有速度快,精度高,自主性强等优势;通过丢弃分组数的方差比较TCP Reno算法和改进算法在丢弃分组上的差异,通过延迟和延迟抖动标准差比较延迟和延迟抖动在不同数据流中的差异,上述参数更能从全局上反映多个比较项之间的整体差异.通过理论分析和仿真结果对比,该改进算法对于各数据流是公平的,且与TCP算法的公平性相当.
침대제고망락자원이용솔,대TCP Reno옹새공제산법진행개진,위실시옹새우화공제,제출일충개진적옹새공제산법.위판단해산법대소유수거류시부공평,재대기정학건화공평성진행이론분석후,구건NS2방진모형병진행방진,유우방진결과수거량대,상규방법분석교위곤난,고장방진결과전환위수거고문건진행분석,해방법가조작성강,구유속도쾌,정도고,자주성강등우세;통과주기분조수적방차비교TCP Reno산법화개진산법재주기분조상적차이,통과연지화연지두동표준차비교연지화연지두동재불동수거류중적차이,상술삼수경능종전국상반영다개비교항지간적정체차이.통과이론분석화방진결과대비,해개진산법대우각수거류시공평적,차여TCP산법적공평성상당.
In order to increase the efficiency of nehmrk resources,an improved algorithm of congestion control was suggested.Through theoretical analysis,a NS2 model Was built and implemented.There are a lot of simulation data,so it is very difficult to find the essence of the simulation model by conventional method.So the simulation resuit Was converted to data table for deep analysis.This method enhances the autonomy of simulation analysis and is easy to implement with the advantages of high speed and high precision.The differences of in every data flow were compared by delay and jitter standard deviation and the differences of TCP Reno algorithm and the improved algorithm in dropping packets were compared by dropping packets variance.A conclusion Was drawn that the improved algorithm is fair for all the source nodes during congestions and is an equivalent to ordinary TCP congestion algorithm.