(JBE Vol. 20, No. 1, January 2015) (Special Paper) 20 1, 2015 1 (JBE Vol. 20, No. 1, January 2015) http://dx.doi.org/10.5909/jbe.2015.20.1.16 ISSN 2287-9137 (Online) ISSN 1226-7953 (Print) UHD MMT a), a), a) Design of MMT-based Broadcasting System for UHD Video Streaming over Heterogeneous Networks YeJin Sohn a), MinJu Cho a), and JongHo Paik a), UHD,,. UHD, UHD. UHD. HD UHD. Abstract Even if the demands for ultra-high-quality multimedia contents are increasing, it is difficult to produce, encode, play and transport ultra-high-quality contents under the existing broadcasting environment. By the reason, various technologies for the UHD contents have been developed in order to satisfy the user's needs. In this paper, we propose a design methodology of a broadcasting system, which consists of two parts, for UHD services with two parts. At the transmit part of the proposed system can encode a video into several layered-bitstreams hierarchically, and then transport each bitstream over heterogeneous networks. The receiver part can play the received video by composing the separated bitstreams. The proposed system can adaptively provide both HD and UHD contents according to user s reception conditions by using the heterogeneous networks. Keyword : UHD, MMT, broadcasting service, hierarchical video coding, seamless streaming a) (Department of Multimedia, Seoul Women s University) Corresponding Author : (JongHo Paik) E-mail: paikjh@swu.ac.kr Tel: +82-2-970-5606 Fax: +82-2-970-5981 ORCID: http://orcid.org/0000-0003-1867-5316 (2013-140-10047135) 2014. Manuscript received November 17, 2014 Revised January 9, 2015 Accepted January 9, 2015
2 : UHD MMT (Yejin Sohn et al. : Design of MMT-based Broadcasting System for UHD Video Streaming over Heterogeneous Networks). 2012 HD(High Definition)., (3840*2160) UHD(Ultra High Definition) 50 TV [1]. UHD [2], 4 UHD. 32bit 30 2 UHD 5.4TB [3]., (Scalable Video Coding: SVC). (temporal), (spatial) (quality). (base layer) (enhancement layer), (hierarchical). fps (frame per second),.. UHD. UHD TV,,, [4]. UHD TV,,,., MPEG 2014 6, MMT(MPEG Media Transport: ISO/IEC 23008-1). MMT,, UHD. UHD,. UHD SVC, HD UHD.. 2 MMT SVC, 3 MMT. 3,. UHD MMT. 4.. 1. MMT MPEG IP MMT. MMT,. 1 MMT (Encapsulation), (Delivery) (Signaling) [5].,
(JBE Vol. 20, No. 1, January 2015) 1. MMT Fig. 1. Functional layer model of MMT (Asset) (Package), [7,8]. MMT ID MPU.,,,. MMT, HTML5, XML. MMT. ISO-BMFF(ISO Based Media File Format), MPU(Media Processing Unit) [6]. MPU MFU (Media Fragment Unit).,. MMTP(MMT Protocol) IP.. 2 MMT 2. SVC. (temporal), (spatial) (quality), [9]. 3 (CIF TV ) (15, 30, 60fps) 2. Fig. 2. Overview of package 3. SVC Fig. 3. The example of SVC
2 : UHD MMT (Yejin Sohn et al. : Design of MMT-based Broadcasting System for UHD Video Streaming over Heterogeneous Networks). Base, CIF(352*288) 15fps, TV(1280*720) 60fps base enhancement.. SVC UHD.. UHD MMT 1. ( ),,. 4,, MMT MMT, MMT. MMT,. MMT UHD base enhancement, MMT. MMT base HD, enhancement UHD. enhancement, UHD enhancement. 2. MMT 1 MMT, 5 MMTP. 4. Fig. 4. The structure of the proposed broadcasting system
(JBE Vol. 20, No. 1, January 2015) 5. MMT Fig. 5. The structure of MMT service generator,,.,, Extractor base enhancement MMT Encapsulator. MMT Encapsulator, ISO-BMFF. MPU MMTP. HTML5 (Composition Information:CI). HTML5 Encapsulator, CI MMTP. MMTP packet generator MMTP., FEC generator MPU FEC, MMTP packet generator MMTP FEC MMTP, IP MMT. 3. MMT.,,.. 6. MMT
2 : UHD MMT (Yejin Sohn et al. : Design of MMT-based Broadcasting System for UHD Video Streaming over Heterogeneous Networks) 6. MMT FIg. 6. The structure of MMT service receiver, service composer enhancement. service manager enhancement, enhancement., UHD base HD. enhancement,. service manager UHD. base enhancement, video composer UHD,. 7 MMT,..,. UHD enhancement.,. UHD enhancement. MMT UHD base
(JBE Vol. 20, No. 1, January 2015). 8 HD UHD. t 1 HD t x UHD t x+1. t x+2 UHD, enhancement UHD. base, enhancement, UHD UHD. base enhancement t N+1 UHD t x+2~t N+1 base. 4. 7. MMT Fig. 7. The receiving flow for MMT service,., UHD enhancement UHD. 1 4K UHD HEVC 30fps(frame per second) 16~20Mbps, MPEG-2 30fps 64~80Mbps. SVC SHVC H.264/ AVC, HEVC 10% 4K UHD SVC 8. MMT Fig. 8. The receiving sequence of MMT service
2 : UHD MMT (Yejin Sohn et al. : Design of MMT-based Broadcasting System for UHD Video Streaming over Heterogeneous Networks) 1. Table 1. Prediction of video coding rate Video codec HD video (1920x1080, 29.97fps) 4K UHD Video(3840x2160) 30fps 60fps MPEG-2 16~20Mbps 64~80Mbps 90~112Mbps H.264/AVC 8~10Mbps 32~40Mbps 45~46Mbps HEVC 4~5Mbps 16~20Mbps 22~28Mbps 2. DVB-T DVB-T2 Table 2. DVB-T and DVB-T2 data rate DVB-T DVB-T2 C/N(dB) Useful data rate(mbit/s) C/N(dB) Useful data rate(mbit/s) Modulation Rayleigh Channel GI=1/4 (8K) GI=1/32 (8K) Rayleigh Channel GI=1/4 (16K) GI=1/32 (16K) QPSK 5.4~13.1 5.0~8.3 6.0~10.1 1.8~7.2 6.2~10.4 6.8~11.4 16-QAM 11.1~16.7 10.0~16.6 12.1~20.1 7.3~14.4 12.5~20.9 13.6~22.8 64-QAM 16.0~25.3 14.9~24.9 18.1~30.2 11.7~19.9 18.7~31.3 20.4~34.1 256-QAM - - - 15.4~25.3 25.0~41.9 27.3~45.6 36~50Mbps, SHVC 18~31Mbps. FEC. 2 DVB-T DVB-T2 DVB-T 4K UHD, DVB-T2 64-QAM GI=1/4 (16K) SHVC 4K UHD [10]. 16QAM 64QAM UHD, UHD. 3 TS(Transport Stream) 3. TS MMT Table 3. Characteristic comparison between TS and MMT Contents reusability Interface unity Interactivity TS x x hybrid middleware MMT o o o MMT MMT. MMT IP. MMT CI, TS. TS
(JBE Vol. 20, No. 1, January 2015), MMT HTML5. MMT.. MMT UHD. UHD, MMT. MMT. UHD,. UHD.,. (References) [1] S. Aoki, K. Otsuki, H. Hamada, Effective usage of MMT in broadcasting systems, Broadband and Multimedia Systems and Broadcasting(BMSB), 2013 IEEE International Symposium on, p. 1-6, June, 2013. [2] S.Dubravac, An Update On Ultra HD, Consumer Electronics Association, 2013. [3] Global Survey of Media Executives Forecasts 4K Ultra High Definition TV Adoption and Business Models, 4K UHDTV Adoption, Intelsat, August, 2014. [4] UHDTV broadcast to begin in next year, Telegraph, January, 2013. [5] ISO/IEC 23005-1, Information technology High efficiency coding and media delivery in heterogeneous environments Part 1:MPEG media transport(mmt), June, 2014. [6] ISO/IEC 14496-12:2008, "Information technology - Coding of audiovisual objects - Part 12: ISO base media file format", 2008. [7] Seo, K. D., Jung, T. J., Yoo, J., Kim, C. K., & Hong, J. (2012, June). A new timing model design for MPEG Media Transport (MMT). In Broadband Multimedia Systems and Broadcasting (BMSB), 2012 IEEE International Symposium on, p. 1-5, June, 2012. [8] Y. Lim, MMT, new alternative to MPEG-2 TS and RTP. In Broadband Multimedia Systems and Broadcasting (BMSB), 2013 IEEE International Symposium on, p. 1-5, June, 2013. [9] J.Nightingale,Q.Wang,C.Grecos,Scalable HEVC (SHVC)-Based video stream adaptation in wireless networks, Personal Indoor and Mobile Radio Communications (PIMRC), 2013 IEEE 24th International Symposium on, p. 3573-3577, September, 2013. [10] S. Park, Y. Jo, D. Kim and G. Park, A Study on Terrestrial UHDTV Broadcasting and Construction of Direct Reception Environment by DVB-T2, Journal of Broadcast Engineering, Vol. 18, Issue 4, p. 572-587, July, 2013. - 2007 : - 2013 : - 2012 ~ : - ORCID : http://orcid.org/0000-0001-9609-2058 - :,,
2 : UHD MMT (Yejin Sohn et al. : Design of MMT-based Broadcasting System for UHD Video Streaming over Heterogeneous Networks) - 2008 : - 2012 : - 2008 ~ 2011 : ( ) - 2011 ~ : - ORCID : http://orcid.org/0000-0002-7781-0162 - :, - 1997 : - 2007 : - 1997 ~ 2011 : - 2011 ~ : - ORCID : http://orcid.org/0000-0003-1867-5316 - :,,