Fast 802.11 link adaptation for real-time video streaming by cross-layer signaling

被引：2

作者：

Haratcherev, I ^{[1
]}

Taal, J ^{[1
]}

Langendoen, K ^{[1
]}

Lagendijk, R ^{[1
]}

Sips, H ^{[1
]}

机构：

[1] Delft Univ Technol, Fac Elect Engn Math & Comp Sci, NL-2628 CD Delft, Netherlands

来源：

2005 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), VOLS 1-6, CONFERENCE PROCEEDINGS | 2005年

关键词：

video streaming; rate control; MAC layer; SNR; link adaptation; cross-layer interaction;

D O I：

10.1109/ISCAS.2005.1465389

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：

The quality of real-time video streaming over wireless links is significantly reduced due to packet losses and delays caused by rapid changes of the link conditions. We resolve this problem by two solutions. In the first place, we have developed a responsive MAC adaptation method using SNR and packet loss statistics. The second solution depends on the first one, it allows the MAC to communicate information about changes of link conditions to the video codec. Together, these solutions Will prevent packet losses and skipped frames, both of which have an adverse effect on the visual quality of the decoded video. In this paper we present the results of an streaming video experiment using an 802.11a link between a fixed an a mobile station. We show that with the cross-layer signaling between the MAC-layer and the video coder, an increase of 4dB visual quality is achievable.

引用

页码：3523 / 3526

页数：4

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