Bandwidth efficient video streaming based upon multipath SVC multicasting

Che Min Lin*, John K. Zao, Wen-Hsiao Peng, Chia Chi Hu, Hsin Min Chen, Chun Kai Yang

*Corresponding author for this work

研究成果: Conference contribution同行評審

4 引文 斯高帕斯(Scopus)

摘要

The Scalable Video Coding (SVC) Extension of H.264/AVC was designed to support bandwidth efficient and loss resilient video streaming. Its multilayer predictive encoding enables user devices to adapt their video reception by extracting and decoding selected code layers according to device display capability and network throughput. However, this desirable feature is much harder to realize in practice as the reduction of coding efficiency causes inflation of SVC bitstreams. Consequently, an SVC multicast session among clusters of heterogeneous devices may consume more bandwidth than an AVC simulcasting session. In this paper, we propose a bandwidth efficient scheme for conducting heterogeneous SVC multicasting. The proposed scheme employs a combination of three transport techniques: (1) broadcasting of SVC layers in local service subnets, (2) multipath transport of SVC layers over longhaul networks and (3) aggregation of data flows along transport paths. This scheme is particularly suited for delivering SVC bitstreams to different user devices scattered over geographically dispersed local subnets. Preliminary simulation experiments performed over lossless networks showed that the scheme can introduce from 2:1 to 6:1 reduction of up-stream bandwidth for SVC layer transport. It can also maintain 85% transport efficiency while minimizes PSNR loss of most user devices even under heavy traffic. We expect the proposed scheme will achieve better rate-distortion performance than AVC simulcasting over lossy networks if unequal erasure protection (UEP) will be applied to the lower SVC layers. Further investigation of its potential is currently underway.

原文English
主出版物標題IWCMC 2008 - International Wireless Communications and Mobile Computing Conference
頁面406-412
頁數7
DOIs
出版狀態Published - 6 十月 2008
事件International Wireless Communications and Mobile Computing Conference, IWCMC 2008 - Crete, Greece
持續時間: 6 八月 20088 八月 2008

出版系列

名字IWCMC 2008 - International Wireless Communications and Mobile Computing Conference

Conference

ConferenceInternational Wireless Communications and Mobile Computing Conference, IWCMC 2008
國家Greece
城市Crete
期間6/08/088/08/08

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