一种适用于异构网络的TCP New Vegas算法  

A New TCP New Vegas Algorithm Applicable for the Heterogeneous Networks

作　　者：冯立波[1] 潘丽静[1] 杨润标[1] 罗桂兰[1] 张梅[1] 

机构地区：[1]大理学院数学与计算机学院,云南大理671003

出　　处：《大理学院学报（综合版）》2014年第6期10-14,共5页Journal of Dali University

基　　金：云南省教育厅科研基金资助项目(2012C065)

摘　　要：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 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.

关 键 词：异构网络 无线传感器网络 TD-SCDMA TCP TCPNewVegas 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]