计算机工程

• 移动互联与通信技术 • 上一篇    下一篇

DVB-S2 GS流的分析与提取方法

邵永庆1,2,黄 焱1,王翔宇1   

  1. (1. 解放军信息工程大学信息系统工程学院,郑州 450002;2. 重庆通信学院,重庆 400035)
  • 收稿日期:2012-10-16 出版日期:2013-11-15 发布日期:2013-11-13
  • 作者简介:邵永庆(1988-),男,硕士研究生,主研方向:DVB-S2信号分析处理;黄 焱,教授;王翔宇,硕士研究生
  • 基金项目:
    国家自然科学基金资助项目(60872142)

Analysis and Extracting Method for DVB-S2 GS

SHAO Yong-qing  1,2, HUANG Yan  1, WANG Xiang-yu  1   

  1. (1. School of Information System Engineering, Information Engineering University of PLA, Zhengzhou 450002, China; 2. Chongqing Communication Institute, Chongqing 400035, China)
  • Received:2012-10-16 Online:2013-11-15 Published:2013-11-13

摘要: 随着卫星技术与互联网技术的进一步融合,通过数字广播电视(DVB-S)信道传输的业务种类大幅增加。第一代系统难以应付快速增长的IP数据业务,为此,第二代数字卫星广播标准(DVB-S2)制定一种新的码流:一般传输流(GS)。针对现有卫星设备缺乏对GS流处理的现状,根据基带帧自身的格式、GS流在基带帧中的编排方式及GS流专用封装一般传输流封装(GSE)的特点,提出一种DVB-S2 GS流分析与提取的方法,对基带帧的封装方式及GS流的封装GSE进行分析,并用实际数据进行测试。实验结果证明,该方法能够快速准确地还原出应用层中的IP数据,实现对GS流的处理。

关键词: 第二代数字卫星广播电视标准, 一般传输流, 一般传输流封装协议, 基带帧, IP数据, 信息还原

Abstract: Along with the combination of satellite and Internet technology, business lines transmitted by satellite Digital Video Broadcasting-Satellite(DVB-S) channel increases rapidly. The first generation system can not meet the need of the fast increasing IP business, hence, an entirely new Generic Stream(GS) is introduced in DVB-S2 standard. Aiming at the problem that the existing satellite terminal equipment can not process GS very well, this paper presents a DVB-S2 GS extraction and analysis method according to the form of generic stream, the arrangement method of GS in base-band frame and feature of Generic Stream Encapsulation(GSE). It analyses the encapsulation mode of base-band frame and GSE of GS, and tests some actual data. Experimental result shows the method can restore IP data in application layer rapidly and accurately, and can realize the processing of GS.

Key words: the second generation of Digital Video Broadcasting-Satellite(DVB-S2), Generic Stream(GS), Generic Stream Encapsulation (GSE) protocol, base-band frame, IP data, information restoration

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