| 基于TFRC的RTP报文研究与应用 |
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| 引用本文： | 郑旭,李国峰,梁科,王锦.基于TFRC的RTP报文研究与应用[J].计算机应用与软件,2008,25(10). |
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| 作者姓名： | 郑旭 李国峰 梁科 王锦 |
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| 作者单位： | 南开大学信息技术科学学院,天津,300071 |
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| 摘 要： | 介绍了RTP/RTCP协议的最新发展趋势--基于TFRC的RTP报文,它是在原有的RTP协议(RFC 3550)的基础上进行了扩展,使其支持TCP友好速率控制(TFRC).TCP友好速率控制(TFRC)是一个基于单播流的拥塞控制,经常用来消除网络拥塞.它根据当前的网络状况、往返时间、丢失分组情况等计算出TCP友好速率.还简要介绍了往返时间(RTT)、吞吐率方程的计算方法,并以oRTP为基础,分析其中的数据结构,简单实现了基于TFRC的RTP报文.
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| 关 键 词： | TFRC(TCP友好速率控制) |
RESEARCH AND UTILIZATION OF RTP PROFILE BASED ON TCP FRIENDLY RATE CONTROL |
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| Zheng Xu,Li Guofeng,Liang Ke,Wang Jin.RESEARCH AND UTILIZATION OF RTP PROFILE BASED ON TCP FRIENDLY RATE CONTROL[J].Computer Applications and Software,2008,25(10). |
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| Authors: | Zheng Xu Li Guofeng Liang Ke Wang Jin |
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| Affiliation: | Zheng Xu Li Guofeng Liang Ke Wang Jin(College of Information Technical Science,Nankai University,Tianjin 300071,China) |
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| Abstract: | The paper introduces the latest trend of development in RTP/RTCP which is an RTP Profile based on TCP Friendly Rate Control.It extends the RTP(RFC 3550) profile for RTCP-based feedback(RTP/AVPF) to provide support to TFRC.TFRC is a congestion control scheme for unicast flows competing with network jam.TFRC calculates a TCP-friendly data rate relying on round trip times(RTT) and packet losses according to existing network situation.It introduces the computing method of RTT and throughput equation.Based on oR... |
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| Keywords: | RTP RTCP |
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