CAJ | 학술논문

卫星通信技术一项重要研究内容是如何在TCP连接下最大限度地利用链路带宽。国内外研究人员对 TCP性能改善做了很多研究工作，然而关于如何进行TCP仿真以及如何搭建仿真平台方法研究不多，旨在提供一种通用灵活的卫星链路TCP仿真方法，NS-3是款全新的优秀的网络仿真软件，通过在NS-3仿真软件上搭建卫星链路仿真场景，进行卫星链路的TCP拥塞控制算法仿真；通过将NS-3与linux内核模块结合，仿真分析了linux内核中的11种TCP拥塞控制算法。以此提供了一种基于NS-3搭建TCP连接的仿真方法，可根据此方法仿真卫星链路的TCP连接，同样也可进行其他场景的TCP连接仿真分析。仿真结果证明了提供方法的正确性和有效性。
위성통신기술일항중요연구내용시여하재TCP련접하최대한도지이용련로대관。국내외연구인원대 TCP성능개선주료흔다연구공작，연이관우여하진행TCP방진이급여하탑건방진평태방법연구불다，지재제공일충통용령활적위성련로TCP방진방법，NS-3시관전신적우수적망락방진연건，통과재NS-3방진연건상탑건위성련로방진장경，진행위성련로적TCP옹새공제산법방진；통과장NS-3여linux내핵모괴결합，방진분석료linux내핵중적11충TCP옹새공제산법。이차제공료일충기우NS-3탑건TCP련접적방진방법，가근거차방법방진위성련로적TCP련접，동양야가진행기타장경적TCP련접방진분석。방진결과증명료제공방법적정학성화유효성。
The bandwidth resource of satellite link is scarce. How to make maximum use of bandwidth resource is an impor-tant content of satellite network technology in the current study. The researchers have done a lot of research work on en-hancing TCP performance, however, little research has been done on the subject of how to do TCP simulation and how to build simulation platform. The purpose of this paper is to provide a general and flexible method on simulation of TCP con-nection of satellite link, NS-3 is a new freely simulate software of discrete events for the networks research. This paper simulates TCP connection on satellite link via building simulation scene of satellite link on NS-3, and analyzes 11 kinds of TCP congestion control algorithm in Linux kernel via combining NS-3 with Linux kernel. This paper provides a method of TCP simulation based on NS-3. Readers can simulate TCP connection of satellite link according to this method, of course, can also simulate TCP connection of other scenes. Finally, the simulation results indicate that the proposed methods are correct and resultful.