超宽带IP网络环境下的视频分组丢失修复技术研究

doi:10.3969/j.issn.1000-0801.2012.01.003

Abstract

Abstract:

More and more video services and programs will be carried by ultra-broadband IP networks.Compared with traditional operator's coaxial networks,IP networks are more complex,packet loss is more likely to happen,and the userˊs experience will suffer a lot.Current video coding redundancy technologies are only feasible in coaxial network,it is necessary to research on the video packet loss restoration technologies in IP networks.This paper analyzes the impact of packet loss on video quality,compares the mainstream remediation technology,analyzes the test results.

Key words: video, packet loss remediation, retransmission

Ke Ruan,Jie Zou,Yongqing Zhu. Research on Video Packet Loss Remediation in Ultra-Broadband IP Network Environment[J]. Telecommunications Science, 2012, 28(1): 16-20.

码流速率（Mbit/s）	时延（ms）	抖动（ms）	最长故障时间（ms）	最长故障丢失分组数	丢失分组长度	平均分组丢失率
1.75	＜200	＜50	≤16	4	1 error/h	≤6.68_×10^-6
2.0	＜200	＜50	≤16	5	1 error/h	≤7.31_×10^-6
8	＜200	＜50	≤16	14	1 error/h	≤1.28_×10^-6
10	＜200	＜50	≤16	17	1 error/4 h	≤1.24_×10^-6

	时延（单向）	分组丢失率	抖动（单向）
	（ms）	（单向）	（ms）
IPTV（多播）	＜500	＜0.1%	＜500
IPTV点播，PC流媒体	＜100	＜1%	＜50

1	Broadband Forum TR126. Triple-play Services Quality of Experience（QoE）Requirements, 2006
2	ISO/IEC.13818-1（Systems）13818-2（Video Coding）, 2007
3	RFC3550.RTP: A Transport Protocol for Real-Time Applications, 2003
4	ETSI TS 102 472 V1.1.1.Digital Video Broadcasting（DVB）, IP Datacast over DVB-H: Content Delivery Protocols, 2005
5	SMPTE Specification 2022-1. Forward Error Correction for Real-Time Video/Audio Transport over IP Networks, 2007

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Research on Video Packet Loss Remediation in Ultra-Broadband IP Network Environment

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