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首页> 外文会议>2010 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB 2010) >Effective video content distribution by combining TCP with adaptive FEC coding
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Effective video content distribution by combining TCP with adaptive FEC coding

机译：通过将TCP与自适应FEC编码相结合来有效地分发视频

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摘要

This paper will look at the benefits and limitations of content distribution using Forward Error Correction (FEC) in conjunction with the Transmission Control Protocol (TCP). FEC can be used to reduce the number of retransmissions which would usually result from a lost packet. The requirement for TCP to deal with any losses is then greatly reduced. There are however side-effects to using FEC as a countermeasure to packet loss: an additional requirement for bandwidth. When applications such as real-time video conferencing are needed, delay must be kept to a minimum, and retransmissions are certainly not desirable. A balance, therefore, between additional bandwidth and delay due to retransmissions must be struck. Our results show that the throughput of data can be significantly improved when packet loss occurs using a combination of FEC and TCP, compared to relying solely on TCP for retransmissions. Furthermore, a case study applies the result to demonstrate the achievable improvements in the quality of streaming video perceived by end users.
机译：本文将探讨使用前向纠错（FEC）和传输控制协议（TCP）进行内容分发的好处和局限性。 FEC可用于减少通常由丢失的数据包引起的重传次数。这样就大大降低了TCP处理任何损失的要求。但是，使用FEC作为丢包的对策有副作用：带宽的额外要求。当需要诸如实时视频会议之类的应用时，必须将延迟保持在最低水平，并且肯定不希望重传。因此，必须在附加带宽和由于重传引起的延迟之间取得平衡。我们的结果表明，与仅依靠TCP进行重传相比，使用FEC和TCP的组合发生数据包丢失时，可以显着提高数据吞吐量。此外，案例研究将结果应用于证明最终用户感知的流视频质量可以实现的改善。

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