We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Modified over 5 years ago
DVB-x © Mika Grundström 7/15/20151 DVB-x for delivering services Mika Grundström firstname.lastname@example.org tel. 03-272 5894
DVB-x © Mika Grundström 7/15/20152 Outline u Introduction u Services u DVB-x specifications u MPEG over DVB-x u Delivering data (IP) services u Conclusions
DVB-x © Mika Grundström 7/15/20153 Introduction u DVB project u ETSI specified standards u Delivery of video services but... u Broadcast is : –video –audio –data
DVB-x © Mika Grundström 7/15/20154 Services u Traditional service: –Broadcast video (MPEG-2 TS) u Newer services: –Enhanced/interactive television –VoD –KoD –MoD –Internet access
DVB-x © Mika Grundström 7/15/20155 The use of DVB containers
DVB-x © Mika Grundström 7/15/20156 DVB Broadcast Channels u There are number of broadcast channels: –DVB-S : Satellite –DVB-T : Terrestrial –DVB-C : Cable u Traditionally the use have been video broadcasting u In the future also data u Economical and massive bandwidth pipe for citizen’s Internet access
DVB-x © Mika Grundström 7/15/20157 DVB-x standards u DVB-S –Satellite service and on-going –Video and data (uni-directionality) u DVB-C –Cable service, on-going –Video and Internet access (bi-directionality) u DVB-T –Terrestrial service, analog switch off –Broadcast video (regulatory issues)
DVB-x © Mika Grundström 7/15/20158 DVB used in the world
DVB-x © Mika Grundström 7/15/20159 DVB-S u Mature broadcast video service via satellite u Bit rate varies max 40 Mbps u Continental scope u Internet access and data services u Requires out-of-band return channel
DVB-x © Mika Grundström 7/15/201510 DVB-C u Developing broadcast video service u Big potential in Internet access offering u Bit rates about 34 Mbps u Requires network update in many cases
DVB-x © Mika Grundström 7/15/201511 DVB-T u Trial phase, three transmitters u Bandwidth capacity 20-32 Mbps u Mobile reception possible u Unidirectional u Data services limited (regulations)
DVB-x © Mika Grundström 7/15/201512 DVB-T radio
DVB-x © Mika Grundström 7/15/201513 MPEG over DVB u Traditionally MPEG-2 TS over DVB-x u Broadcast service u Other services - MPEG-2 TS is framing u How about Video over IP over MPEG-2 TS over DVB-x? u Multiplexing dilemma
DVB-x © Mika Grundström 7/15/201514 Packetisation
DVB-x © Mika Grundström 7/15/201515 MPEG over DVB u Problem with the service provider u Duplicated service infrastructure u Content management problem u Service Information (SI) needed –User and Program information –Automatic tuning to TS u DVB Multimedia Home Platform (Java based) –Service creation
DVB-x © Mika Grundström 7/15/201516
DVB-x © Mika Grundström 7/15/201517
DVB-x © Mika Grundström 7/15/201518 Providing data services u Sharing downstream large bandwidth u Requires return channel u Routing problem u Spectrum allocation management u Location based services
DVB-x © Mika Grundström 7/15/201519 DVB-S data reception
DVB-x © Mika Grundström 7/15/201520 Data Broadcasting u DVB defined encapsulation u Multiprotocol encapsulation over MPEG-2 TS u Does not define a complete system model u Network operator has an option with the use of different technologies u Linking the Internet (bi-directional) and broadcast (unidirectional) channels is a challenge –routing issues –TCP acknowledgements –HTTP and other protocol support
DVB-x © Mika Grundström 7/15/201521 Data packetisation options
DVB-x © Mika Grundström 7/15/201522 DVB data encapsulation options MPEG-2 Transport Stream Data Piping Service Adaptation PES Data Streaming Section Service Specific DSM-CC Private Data Multiprotocol Encapsulation Datagram IP Service Adaptation Service Adaptation Service Adaptation Application
DVB-x © Mika Grundström 7/15/201523 MAC address structure
DVB-x © Mika Grundström 7/15/201524 DVB data broadcast system
DVB-x © Mika Grundström 7/15/201525 Data delivery using multicast in DVB
DVB-x © Mika Grundström 7/15/201526 Data delivery to portable device mux & scrambling Broadcast subnet Internet Feed sender (router) Optional MpegTS Mux & Scrambling DVB broadcast network IP DVB mpe DVB phy MPEG TS X DVB phy DVB phy MPEG TS IP DVB mpe MPEG TS DVB phy IP X UDP uHTTP IGMP Broadcast control & management station UDP uHTTP Multicast data server IGMP
DVB-x © Mika Grundström 7/15/201527 Protocol issues u Service Announcement Protocol –Simple protocol for informing of multicast sessions u Service Description Protocol –Describes multimedia session properties u Uni-directional Link Routing –Routing over broadcast links –Currently not applicable u Unidirectional Hyper Text Transfer Protocol –Robust protocol to transfer HTTP –retransmissions and error correction
DVB-x © Mika Grundström 7/15/201528 Conclusions u DVB Broadcast channels are cost-effective way providing Fast Internet Access u Content packaging is in key role u Mobile reception using DVB-T increases the number of users and possible applications u Technical solutions exist u Maturity to be achieved u Large scale deployment can be started today
Internet for multimedia content Yogendra Pal Chief Engineer, All India Radio.
Multimedia Systems Irek Defee IPTV IP + TV Providing television over IP networks.
Push Technology Humie Leung Annabelle Huo. Introduction Push technology is a set of technologies used to send information to a client without the client.
Chapter 5 standards for multimedia communications
The Real Time Streaming Protocol (RTSP)
OSI Model Overview Application (Upper) Layers Session Presentation Application.
DVB – Digital Video Broadcasting Standards. What is DVB ? DVB (Digital Video Broadcasting) is a set of international open standards for digital television.
Guided by Dr. K.R. Rao Irfan Kerawalla DVB-SH System for Broadcasting to Handheld Devices.
Digital Video Broadcasting the next wave
Quality of Service Issues in Multi-Service Wireless Internet Links George Xylomenos and George C. Polyzos Department of Informatics Athens University of.
Digital radio platforms in Europe
Telecommunications and Networking Dr. V.T. Raja Oregon State University Summer 2007.
CS335 Principles of Multimedia Systems Multimedia Over IP Networks -- I Hao Jiang Computer Science Department Boston College Nov. 6, 2007.
DVB-H digital video broadcasting for handheld devices Björn Forss Magnus Melin.
1 IEEE based Wireless MAN （ WiMAX ）架構下 IPTV Multicasting 系 統之設計與研究 Design and Study of an IPTV multicating system over IEEE based Wireless.
TCP/IP Protocol Suite 1 Chapter 25 Upon completion you will be able to: Multimedia Know the characteristics of the 3 types of services Understand the methods.
OSI Reference Model An overview. Standards and the internet International Organization for Standardization ISO 70’s.
CMPT771 Presentation Xu Cheng Internet Protocol Television (IPTV)
1 Data Broadcasting Ken McCann. 2 Application Example - Internet via satellite Delivery of web pages at up to 38 Mbit/s.
Mobile Television Business & Technology Platforms, DVB-H, Operator Roles T Network Services Business Models Eino Kivisaari.
© 2020 SlidePlayer.com Inc. All rights reserved.