Multi-stages hybrid ARQ with conditional frame skipping and reference frame selecting scheme for real-time video transport over wireless LAN

被引：19
作者：
Chen, M [1 ]
Wei, G [1 ]
机构：
[1] S China Univ Technol, Dept Elect & Commun Engn, Guangzhou, Peoples R China
来源：
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2004年 / 50卷 / 01期
基金：
中国国家自然科学基金;
关键词：
ARQ; IEEE; 802.11b; H.26L video; multimedia communication; wireless local area network;
D O I：
10.1109/TCE.2004.1277856
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper proposes a multi-stages hybrid ARQ/FEC scheme with frame skipping, reference frame selecting and intra-frame refreshing techniques for H.26L real-time video streaming over WLAN. In this paper, adaptive ARQ/FEC is adopted to save unnecessary FEC overhead; conditional frame skipping is adopted to avoid ETE delay inflation due to MAC ARQ/FEC error recovery; reference frame selecting is adopted to save bandwidth; intra-frame refreshing is adopted to prevent residual error propagation among consecutive frames. Through analysis and simulation, we show that multi-stages hybrid ARQ scheme has the following key properties: (1) high error recovery rate for realtime video frames, (2) excellent scalability, (3) high transmission efficiency. In case of severe unreliable channel which causes losing a lot of IP packets, we obtain a peak signal-to-noise ratio improvement up to about 10dB compared to the hybrid ARQ proposed in [1].
引用
收藏
页码：158 / 167
页数：10
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