DVB

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DVB IP developments Wien, 1 June 2006
Ulrich Reimers
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Structure of the presentation

• An introduction to the world of Digital Video
  Broadcasting (DVB)
• IP in DVB an overview
• IP in traditional DVB broadcast channels
• DVB-H and IP Datacast
• Solutions for IPTV
• Conclusion

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DVB Digital Video Broadcasting

• The abbreviation DVB on the map stands for the
  results of the international DVB Project
• The DVB Project is the global focal point for the
  development of the broadcast related electronic
  media
• Broadcast services based on DVB technology are in
  operation throughout the world
• Technical solutions developed by the DVB Project
  are standardized by standardization authorities
  like ETSI and ITU

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DVB historically

• The official launch of the DVB Project took place
  in September 1993 13 years ago
• Our first product was DVB-S in November 1993
• We finished phase 1 of our work in 1995 with the
  specification of DVB-T
• In the early days MPEG-2 video coding was the
  underlying source coding technology (for audio
  various options exist)
• Phase 2 and phase 3 were devoted to the
  development of the specifications for data
  broadcasting and return channels and of the
  Multimedia Home Platform (MHP)

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The DVB Project
260 member organisations in 4 constituencies repre
senting 34 countries
Theo Peek, NL
General Assembly
Ad-hoc groups on Budget ...
Project Office
Steering Board
P. MacAvock, Irl C. Eltzroth, B
Technical Module
Commercial Module
Promotions Module
IPR Module
G. Mills, GB
H. Stein, D
A. Dixon, GB
U. Reimers, D
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IP in DVB an overview

• Over classical DVB broadcast channels IP
  transmission is made possible using
  Multiprotocol Encapsulation (MPE) as described
  in EN 301 192 (Specification for data
  broadcasting)
• For use with DVB interaction channels the
  application of IP is described in ETS 300 802
  (Network independent protocols for DVB
  interactive services)
• For DVB in-home networks IP is supported
• For Mobile TV we created DVB-H and IP Datacast.
  For both IP is the fundamental packet format
• The development of solutions for IPTV is under
  way
• The Multimedia Home Platform (MHP) will be
  extended by a version for IPTV

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Structure of the presentation

• An introduction to the world of Digital Video
  Broadcasting (DVB)
• IP in DVB an overview
• IP in traditional DVB broadcast channels
• DVB-H and IP Datacast
• Solutions for IPTV
• Conclusion

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DVB transmissions are mostly based on MPEG
Transport Stream (TS) packets
Sync Byte 01000111

• The first 4 Byte are used as the packet header.
• The following 184 Byte are used for the payload
• 13 bit for the PID enable identification of 8192
• (213) different kinds of logical channels
• For example PID 0000000000001 identifies TS
• packets which include information
  about
• Conditional Access services

13 bit for the Packet Identifier (PID)

• At 40 Mbit/s 27000 TS packets are transmitted
  per second

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Multiprotocol Encapsulation (MPE) allows the use
of IP-based data in Transport Streams
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IPv6 in Multiprotocol Encapsulation (MPE)

• The encapsulation of DSM-CC sections (ISO
  13818-6) in Transport Streams had been defined by
  MPEG
• DVB took the data structure of DSM-CC private
  sections as the basis of MPE
• The original version of the MPE specification
  (developed in 1997) did not take IPv6 into
  account
• Later versions (starting in 2003) incorporated
  IPv6 as an option

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You do know what DVB-H is all about, right ?

• DVB-H is able to deliver data rates of up to 10
  Mbit/s to a battery powered terminal
• DVB-H is highly compatible with DVB-T
• DVB-H therefore acts as a wide band
  point-to-multipoint data downstream
• In many cases the DVB-H terminal has access to a
  mobile communications network (GSM, GPRS, UMTS)
• Time slices are the tool which helps to reduce
  power consumption in the terminal
• A separate level of FEC enhances the robustness
  (in comparison to DVB-T)
• DVB-H is based on the transport of time slices
  which are filled with IP packets

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DVB-H terminals a selection of prototypes and
products
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Now that you have DVB-H

• you can offer your customers a very powerful
  IP- (Internet-Protocol-) based downstream
  channel, but
• A lot of questions remains unanswered. For
  example
• How will the customer detect the services on
  offer?
• How will the customer navigate through the
  services?
• Which protocols will be used on top of IP?
• Which kind of audio coding is used?
• Which kind of video coding is used?
• How can you manage access to the services?
• Will handover and roaming be possible?
• This is where IP Datacast comes into play

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The set of IP Datacast (Phase 1) specifications
consists of the following documents

• Set of Specifications for Phase 1
• Use Cases and Services
• Architecture
• PSI/SI
• Content Delivery Protocols (CDP)
• Electronic Service Guide (ESG)
• Service Purchase and Protection (SPP)

And in addition, audio and video coding formats
aredescribed in the DVB guidelines document TS
102 005
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Architecture of the IP Datacast System
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Was there a discussion related to the use of IPv6
for IP Datacast?

• Yes, there was
• Some DVB members wanted to restrict IP Datacast
  to the use of IPv6
• Others insisted on the use of IPv4
• The result of the discussions was that no firm
  decision was taken in favour of the one or the
  other
• Currently, IPv4 is used but one manufacturer has
  based his (somewhat proprietary) Electronic
  Service Guide on IPv6

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Structure of the presentation

• An introduction to the world of Digital Video
  Broadcasting (DVB)
• IP in DVB an overview
• IP in traditional DVB broadcast channels
• DVB-H and IP Datacast
• Solutions for IPTV
• Conclusion

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DVB solutions for IPTV why now?

• New methods of video coding (for example
  H.264/AVC) are able to provide TV services with
  SDTV quality at 2 Mbit/s
• ADSL 2 can deliver a downstream data rate of 16
  Mbit/s
• Which private household can make meaningful use
  of 16 Mbit/s if not for video?
• At 2 Mbit/s one hour of SDTV rquires only 0,879
  GByte hard disc space
• Does your PC have less than 250 GByte hard disc
  space?
• Telecom companies world-wide wish to take a share
  of the TV business
• Have you heard about the roll-out of VDSL
  networks?

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Phases and timing of DVB-IPTV handbooks
MPEG-2 video
H.264/AVC video

• Phase 1.1 MPEG 2 TS over IP approved in 2004
• Phase 1.2 - SDS updates to allow for new A/V
  formats BCG Metadata approved in Q1/2006
• Phase 1.3 remote management, downloading to
  local stores, application layer FEC NSP
  applications Q3/06
• Phase 1.4 integration of DVB-HN (and/or
  DLNA) Q1/07
• Phase 2.1 IPTV delivery directly over IP
  Q4/06
• Phase 2.2 DVB IPTV over less tightly managed
  networks Q4/07?

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Is IPv6 an issue for IPTV?

• Not really / not yet
• Current in-home network solutions support IPv4
  only
• In conclusion IPv6 was not foreseen in the
  current IP documentation
• This may change in future

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Conclusion

• Even after 10 years the DVB Project is one of the
  world leaders in the development of global
  solutions for the electronic media
• One of our strengths lies in the fact that
  organizations from various parts of the world
  help us design systems which promise commercial
  relevance
• As in all engineering organizations The results
  of the DVB Project are always years ahead of the
  practical implementation
• The Internet Protocol plays an important role for
  our solutions in many ways. IPv4 and IPv6
  co-exist
• There still is no huge demand for IPv6

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Thank you for your interest !