Energy-aware MPEG-4 FGS streaming

被引：7

作者：

Choi, K ^{[1
]}

Kim, K ^{[1
]}

Pedram, M ^{[1
]}

机构：

[1] Univ So Calif, Dept Elect Engn Syst, Los Angeles, CA 90089 USA

来源：

40TH DESIGN AUTOMATION CONFERENCE, PROCEEDINGS 2003 | 2003年

关键词：

low energy; video streaming; MPEG4-FGS; dynamic voltage and frequency scaling;

D O I：

10.1109/DAC.2003.1219150

中图分类号：

TP31 [计算机软件];

学科分类号：

081202 ; 0835 ;

摘要：

In this paper, we propose an energy-aware MPEG-4 FGS video streaming system with client feedback. In this client-server system, the battery-powered mobile client sends its maximum decoding capability (i.e., its decoding aptitude) to the server in order to help the server determine the additional amount of data (in the form of enhancement layers on top of the base layer) per frame that it sends to the client, and thereby, set its data rate. On the client side, a dynamic voltage and frequency scaling technique is used to adjust the decoding aptitude of the client while meeting a constraint on the minimum achieved video quality. As a measure of energy efficiency of the video streamer, the notion of a normalized decoding load is introduced. It is shown that a video streaming system that maintains this normalized load at unity produces the optimum video quality with no energy waste. We implemented an MPEG-4 FGS video streaming system on an XScale-based testbed in which a server and a mobile client are wirelessly connected by a feedback channel. Based on the actual current measurements in this testbed, we obtain an average of 20% communication energy reduction in the client by making the MPEG-4 FGS streamer energy-aware.

引用

页码：912 / 915

页数：4

共 9 条

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