Power-Efficient QoE-Aware Video Adaptation and Resource Allocation for Delay-Constrained Streaming Over Downlink OFDMA
Power-Efficient QoE-Aware Video Adaptation and Resource Allocation for Delay-Constrained Streaming Over Downlink OFDMA
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DOI：
10.1109/lcomm.2016.2518684
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发表时间：
2016-01
期刊：
影响因子：
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通讯作者：
Seyed Ehsan Ghoreishi;H. Aghvami
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文献类型：
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作者：
Seyed Ehsan Ghoreishi;H. Aghvami
在这封信中，我们提出了一个QoE感知的视频自适应和资源分配的方法，在下行链路OFDMA系统的功率有效的流。我们的自适应方案选择性地从视频流中丢弃数据包，以在QoE和延迟约束下产生较低的比特率版本。这导致无线网络的负载的减少和视频容量的增加。我们的资源分配目标是通过考虑视频自适应阶段确定的每个流的延迟要求来最小化传输功率。实验结果表明，所提出的系统在满足QoE要求的同时，在端到端延迟和功率效率方面有显着的性能增强。
In this letter, we propose a QoE-aware video adaptation and resource allocation approach for power-efficient streaming over downlink OFDMA systems. Our adaptation scheme selectively drops packets from a video stream to produce a lower bit-rate version under QoE and delay constraints. This results in a reduction of the load and an increase of the video capacity of the wireless network. Our resource allocation target is to minimize the transmit power by considering the delay requirements of each stream identified in the video adaptation phase. Experimental results have shown significant performance enhancement of the proposed system in terms of end-to-end delay and power efficiency while satisfying QoE requirements.