CAJ | 학술논문

TCP Vegas是运输层的一种可靠算法，但是在无线网络中不能最高效率的占用网路带宽，使得数据传输受到限制，不适合在无线网络中传输。对TCP Vegas算法进行改进，提出了一种适用于异构网络的TCP New Vegas算法。该算法将diff控制在两个动态门限值a，b之间，根据a，b两个动态门限值的设定，可有效的提高算法的拥塞窗口及吞吐量。以无线传感器网络接入第三代移动通信网络为仿真背景，对该算法进行了仿真实验。仿真结果表明，改进后的TCP New Vegas算法具有较大的拥塞窗口和较高的吞吐量，更适合应用于异构网络中数据的传输。
TCP Vegas시운수층적일충가고산법，단시재무선망락중불능최고효솔적점용망로대관，사득수거전수수도한제，불괄합재무선망락중전수。대TCP Vegas산법진행개진，제출료일충괄용우이구망락적TCP New Vegas산법。해산법장diff공제재량개동태문한치a，b지간，근거a，b량개동태문한치적설정，가유효적제고산법적옹새창구급탄토량。이무선전감기망락접입제삼대이동통신망락위방진배경，대해산법진행료방진실험。방진결과표명，개진후적TCP New Vegas산법구유교대적옹새창구화교고적탄토량，경괄합응용우이구망락중수거적전수。
TCP Vegas is a reliable algorithm in the transport layer. In virtue of the data transmission restricted in wireless network bandwidth, it is not suitable for transmission in the wireless network. A TCP New Vegas algorithm which is applicable to heterogeneous networks is presented based on TCP Vegas algorithm. The algorithm controls the diff two dynamic threshold methods a, b. According to the two set a dynamic threshold method, it can effectively improve the algorithm of congestion window and throughput. The algorithm simulation experiment was carried out for background simulation of wireless sensor networks access to the third generation mobile communication network. The simulation results show that the improved TCP New Vegas algorithm has larger congestion window and higher throughput. It is more suitable for application in heterogeneous network data transmission.