Kommunikatsiooniteenuste arendus IRT0080

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Kommunikatsiooniteenuste arendusIRT0080

• Loeng 5/2008
• Avo Otstelekommunikatsiooni õppetool,
• TTÜ raadio- ja sidetehnika inst.avo.ots_at_ttu.ee

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Mobiilne multimeedia

• D A B
• http//en.wikipedia.org/wiki/Eureka_147
• D V B
• D M B

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(No Transcript)
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Põhinõuded teenusele

• The service must be available outdoor, indoor
  and in moving vehicle
• Public channels and pay channels are a must,
  special channels desirable
• Radio must be available
• Wide coverage (urban, suburban and main roads)

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IP Datacast
IP Datacast OSI model
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Sisu sobivus

• Integration Any content on any screen

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Mobiili kasutus
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DVB-H Digital Video Broadcasting Handhelds T-DMB TerrestrialDigital Multimedia Broadcasting S-DMB Satellite Digital Multimedia Broadcast MBMS Multimedia Broadcast Multicast Service MediaFlo Media Forward Link Only
Region Europe, USA, Australia South Korea South Korea, Japan Europe, South Asia USA
Video Codec MPEG-4 MPEG-4 MPEG-4 MPEG-4 MPEG-4
Channels/128kbps 60 3-5 9-27 3 50-70
Cell Size 17-40km 40-60km 3-700km 2-3 km 2-10km
Power Reduction Time slicing Bandwidth shrinking Bandwidth Shrinking Time slicing Time division multiplexing
Transport stream MPEG TS, IP MPEG TS IP IP MPEG, IP
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Signaali levitamine
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Kuidas signaali levitada
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Mobile TV areng
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Kus ja mis teenus
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Side tehnoloogiad ja kulud
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Kuhu areng
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Multimedia Broadcast Multicast Service
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Üksik vs multisaade
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Mobile (IP)TV
Standardi variant ja levitamine
DVB (CMBS)
Qualcom (MediaFLO)
OMA (BCAST)
JTC1 (MMC)
UDP(TCP)/IP Multicasting (IETF) Multicast
Routing Protocols, IGMP
WiMax (MBS)
DVB (DVB-H)
3GPP (MBMS)
3GPP2 (BCMCS)
Kandev teenus (Bearer)
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Konvergents
Content Provisioning
Content Aggregation
Provisioning of Datacast Service
Operation of Datacast Network
User
Provisioning of E-Commerce Services
Service Management
Operation of Cellular Network
Provisioning of Cellular Services
Content
Interaction
IP Datacast System
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IPDC

• The term IP Datacasting (IPDC) is used in DVB-H
  for the technical elements required to send IP
  packets over DVB-H broadband downstream channel
  combined with a return channel over a mobile
  communications network such as GPRS or UMTS.

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JTC1/MMC

• MMC (Mobile Multicast Communications)
• ISO/IEC JTC1/SC6/WG7 (ISO/IEC 24793)
• MMC-1 (24793-1) MMC Framework
• MMC-2 (24793-2) MMC Protocol over Native IP
  Multicast Network
• MMC-3 (24793-3) MMC Protocol over Overlay
  Multicast Network

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Teenus, võrk ja terminal
?? ???? ????(2007.5)
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T-DMB
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DVB-H

• .

DVB-H SERVICES
OPTIONAL DVB-T SERVICES
ERROR PROTECTION (MPE-FEC)
IP EN- CAPSULATION
TIME SLICING
TRANSPORT STREAM MULTIPLEXER
DVB-T CODER/MODULATOR
4k-MODE
SIGNALLING
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DVB-H DVB-T täiendus
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DVB-H parameetrid
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Transpordivood tükeldusele
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Aja liistakud
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DVB-H kasutamine
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DVB-T DVB-H
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DVB-T raadiokanal
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Keerukas modulatsioon
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Mitmesageduslik võrk (MFN)
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Ühesageduslik võrk (SFN)

• Kõik saatjad kasutavad võrgus sama sageduskanalit
• Saatjad kattealas ei saa töötada iseseisvalt
  nad peavad edastama sama multipleksisisu

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Lõpulingid
http//www.telecomview.info/ http//www.dvb.org/ h
ttp//www.dvb-h.org/ http//en.wikipedia.org/wiki
/OMA_BCAST http//en.wikipedia.org/wiki/Digital_Mu
ltimedia_Broadcasting http//eng.t-dmb.org/ http/
/www2.rohde-schwarz.com/en/products/broadcasting/t
echnologies/digital_broadcast/