Presentation 2016-08-29
A Study on Hybrid Video Streaming for Indoor Users by Using Multi-path
Iori Otomo, Takuya Fujihashi, Yusuke Hirota, Takashi Watanabe,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) This report aims at mobile video delivery over multiple transmission paths, which consist of wireless communication and visible light communication (VLC). Since VLC is highly directional, each mobile device can use different number of transmission paths for video delivery and experience different quality of VLC paths based on the position. In addition, the quality of each VLC path is unpredictable at a sender because VLC is one-way communication, i.e., no feedback. In this paper, we propose a video transmission scheme to accept the differences of number of transmission paths, and quality of VLC paths between mobile devices. To this end, our proposed scheme jointly exploits discrete wavelet transform (DWT), digital video compression, and pseudo-analog transmission. DWT can transform video frames into low and high quality ones. Low quality frames are compressed by digital video compression and transmitted over a wireless communication path to guarantee smooth playback between all mobile devices. On the other, high quality frames are directly mapped to luminance of an light emitting diode (LED) and transmitted over a VLC path to enhance quality of video frames received from wireless communication. Evaluations show that our proposed scheme gracefully improve video quality of mobile devices, which can use both of wireless communication and VLC paths, according to the improvement of VLC path’s quality.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Wireless Communication / Video Streaming / Discrete Wavelet Transform / Pseudo-Analog Transmission / Visible Light Communication
Paper # CQ2016-51
Date of Issue 2016-08-22 (CQ)

Conference Information
Committee CQ
Conference Date 2016/8/29(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Tsukubasan
Topics (in Japanese) (See Japanese page)
Topics (in English) Wireless Communication Quality, Cross-Layer Techniques, 5G Mobile Communications and Applications, Wireless Network Protocol Design, Wireless Resource Management, IoT, M2M, etc.
Chair Kyoko Yamori(Asahi Univ.)
Vice Chair Takanori Hayashi(NTT) / Hideyuki Shimonishi(NEC)
Secretary Takanori Hayashi(Osaka Univ.) / Hideyuki Shimonishi(Keio Univ.)
Assistant Hirantha Abeysekera(NTT) / Norihiro Fukumoto(KDDI R&D Labs.)

Paper Information
Registration To Technical Committee on Communication Quality
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Study on Hybrid Video Streaming for Indoor Users by Using Multi-path
Sub Title (in English)
Keyword(1) Wireless Communication
Keyword(2) Video Streaming
Keyword(3) Discrete Wavelet Transform
Keyword(4) Pseudo-Analog Transmission
Keyword(5) Visible Light Communication
1st Author's Name Iori Otomo
1st Author's Affiliation Osaka University(Osaka Univ.)
2nd Author's Name Takuya Fujihashi
2nd Author's Affiliation Osaka University(Osaka Univ.)
3rd Author's Name Yusuke Hirota
3rd Author's Affiliation Osaka University(Osaka Univ.)
4th Author's Name Takashi Watanabe
4th Author's Affiliation Osaka University(Osaka Univ.)
Date 2016-08-29
Paper # CQ2016-51
Volume (vol) vol.116
Number (no) CQ-202
Page pp.pp.19-24(CQ),
#Pages 6
Date of Issue 2016-08-22 (CQ)