| 信息发布系统中TS over IP稳定传输的研究与应用 |
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| 引用本文： | 曹杰,刘晓强,杨根兴,蔡立志,刘振宇. 信息发布系统中TS over IP稳定传输的研究与应用[J]. 计算机应用与软件, 2011, 28(8) |
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| 作者姓名： | 曹杰 刘晓强 杨根兴 蔡立志 刘振宇 |
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| 作者单位： | 1. 东华大学计算机科学与技术学院,上海,201620
2. 上海市计算机软件评测重点实验室,上海,201112 |
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| 基金项目： | 国家火炬计划项目(2009GH510068) |
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| 摘 要： | 数字多媒体信息发布系统中,通常使用MPEG-2传输流(TS流)作为传输载体。在基于IP网络的TS流传输过程中,码率是否稳定,是网络信道资源能否被充分利用以及解码端能正常播放的重要因素之一。给出了一个园区信息发布系统实现架构,系统采用基于信道冗余的主备TS流传输方案,设计了基于缓冲机制的码率平滑方法,讨论了缓冲区大小的设置方法,给出精确计时的实现方法。该方法保证了在信道码率恒定的情况下,TS流传输的稳定性,并实际应用于园区信息发布系统中,取得了较好的效果。
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| 关 键 词： | 信息发布 TS流 码流控制 稳定传输 |
RESEARCH AND APPLICATION OF STABLE TRANSPORT OF TS OVER IP NETWORK IN INFORMATION DISTRIBUTION SYSTEM |
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| Cao Jie,Liu Xiaoqiang,Yang Genxing,Cai Lizhi,Liu Zhenyu. RESEARCH AND APPLICATION OF STABLE TRANSPORT OF TS OVER IP NETWORK IN INFORMATION DISTRIBUTION SYSTEM[J]. Computer Applications and Software, 2011, 28(8) |
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| Authors: | Cao Jie Liu Xiaoqiang Yang Genxing Cai Lizhi Liu Zhenyu |
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| Affiliation: | Cao Jie1 Liu Xiaoqiang1 Yang Genxing2 Cai Lizhi2 Liu Zhenyu2 1(School of Computer Science and Technology,Donghua University,Shanghai 201620,China) 2(Shanghai Key Laoratory of Computer Software Evaluating and Testing,Shanghai 201112,China) |
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| Abstract: | As the transport medium,MPEG-2 transport stream(TS) is widely used in digital multi-media information distribution system(IDS).For full use of transport channel and decoder's normal performance,it is very important to keep the stability of transport stream bitrates while TS is transporting over IP network.This paper proposes an architecture of a limited area information distribution system,which uses the channel redundancy-based main backup TS transporting solution,the buffer mechanism-based bit rate smooth... |
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| Keywords: | Information distribute Transport stream Bitrates control Stable transport |
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