Enhanced Error Protection and AV Streaming in DAB

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The DXB Project - Objectives, Concepts and
Structure
R. Schäfer The DXB Project
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DVB-T DAB for broadcast services to handhelds

• DAB and DVB-T are both wireless data
  broadcasting systems
• DVB-T and DAB are both suitable for multimedia
  services
• DVB-H is a compatible extension of DVB-T making
  portable reception of DVB-T signals possible _at_
  reasonable power consumption
• MBMS is a 3GPP based technology for broadcast
  services in one cell
• New and most efficient coding schemes for video
  (H.264/AVC) and audio (HE- AAC, WB-AMR) are now
  available to transmit high quality multimedia
  services _at_ economical bit rates to handhelds
• DAB can be upgraded (extended DAB) in a
  similar way as DVB-H from DVB-T
• The availability of free spectrum for mobile
  broadcast services is different in different
  parts of the world, therefore DVB-H, extended
  DAB (eDAB) and MBMS will co-exist

R. Schäfer The DXB Project
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The DXB concept

• DXB Harmonisation of DAB with DVB-T/DVB-H (and
  MBMS)
• - Not touching the physical layer of DAB
• - upgrading DAB -gt eDAB to make it suitable
  for data casting
• using MPEG-2 TS as common transport layer (as
  one option !!!)
• using IP as common protocol layer
  (mandatory!!!)
• using H.264/AVC and HE-AAC/WB-AMR as common
  content representation
• using the IP datacast specifications
  currently developed in DVB-CBMS or related
  specifications of MBMS or OMA (BCAST)

R. Schäfer The DXB Project
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DXB Common IP based Broadcast Infrastructure for
Mobiles
DXB
Multimedia
IPDC CBMS (MBMS, BCAST) Access to content
Data
Radio
TV
DMB
IP
eDAB
MBMS
DVB-H
MOT
DAB
UMTS
DVB
R. Schäfer The DXB Project
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The DXB Project

• Working Items
• DXB system development standardisation
• Optimisation of video and audio transmission
  (e.g. statistical multiplex)
• Service and coverage aspects
• Quality of service
• Demonstrator
• Field trial
• Partners
• IRT, Siemens, Sony, T-Systems, Vodafone, FhG/HHI
• Coordination FhG/HHI
• Contact Ralf Schäfer (schaefer_at_hhi.de)

R. Schäfer The DXB Project