An Adaptive QoS Video Streaming System for Multimedia Mobile Devices
Date Issued
2009
Date
2009
Author(s)
Li, Hsiu-Hsien
Abstract
As multimedia mobile devices become mainstream consumer products, an energy-aware on-demand video streaming system for portable devices is critical. Since the battery life time on multimedia mobile devices is limited, how to utilize energy efficiently while meeting the required quality of service (QoS) is a major concern in designing a on-demand video streaming system. In this thesis, we propose an energy-aware video quality adaptation mechanism for energy-aware video streaming system. We also devise a content-aware energy predictor to predict the possible energy consumption for consuming the required service. With the aid of the proposed energy predictor, dynamic programming method is used to generate an optimal video stream composed by multiple bitstreams with different bit-rates to minimize total energy consumption on the mobile device while meeting the user-defined QoS requirements.e use an Intel XScale-based evaluation board as a mobile device in our streaming system in which a server and the evaluation platform communicate with each other through wireless connection. According to the actual energy measurement in the evaluation platform, the proposed system can achieve up to 9.08% energy reduction while guaranteeing the user-defined QoS requirements.
Subjects
energy-aware
video streaming
energy prediction
adaptive QoS
SDGs
Type
thesis
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