Convergence of IPTV and Mobile TV
Julien Maisonneuve
July 2008
Agenda
1. Scope and use cases
2. Work Proposals
3. Work with others
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Scope and Use Cases1
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Working Assumptions
Convergence of IPTV and MobileTV
Any use case where both have a role to play
Implies interworking/interoperability between IPTV and mobileTV
Problems well identified
Many MobileTV standards in existence, many upcoming IPTV standards
Defined as Silos without any interoperability path
Convergence not addressed or very limited (e.g. within the silo)
Technology islands, fight for supremacy, reduced services and content for each
Many existing IPTV systems
without any interoperability path
Heterogeneous solution should be assumed (new common architecture unlikely)
Content Offer without standard interfaces
Content Distribution without standard interfaces
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This Group’s Scope
Transversal problems (spanning more than one technical solution)
Convergence of IPTV and mobileTV : multi-screen
Could cover interworking between iptvs and mobileTVs
Content Distribution (applied to fixed networks, wifi, wimax, mobile,…)
Facilitate timely content transfer from source to sink with efficient resource usage
Use cases that cannot be addressed adequately in existing bodies
Bodies centered on one technology or silo
Bodies centered on specific constituencies or areas
Problems that naturally span several bodies (content origination ?)
Overall Goal
Enable new uses and business models
Enable more technical solutions into the game, including existing ones
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This Group
Originality and Legitimacy
Not betting on a given “Technology Island” or Silo
Aims at providing interoperation between
Existing technical solutions (DVB-IP, proprietary, DVB-H/SH/IPDC, OMA BCAST,…)
Upcoming technical solutions (IMS,…)
Consequences
Must not make overly large assumptions on common elements or concepts (network…)
Need to concentrate on higher level of abstraction
Offers an interworking interface
Technical solutions (products) can elect to support … or not
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Nonexhaustive list of possible Use Cases
Transfer program from phone to TV (or Tv2Tv, Ph2Ph, sync or async)
Common program production and formatting
Cross-platform profile access and billing
Cross-platform content access
Cross-platform nPVR control and access
PC access to IPTV/MTV
« User experience » portability (not only video)
Same program on all screens
…
What probably cannot be achieved (non goals)
Same content protection, same management
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Example Use Case : IPTV-MobileTV session transfer
John is watching soccer on his TV, must pickup wife at station
Select « transfer program » in IPTV client
Select « destination device » as « my mobile phone »
- Signaling happens between IPTV system and MobileTV system -
Phone client receives notification
Asks confirmation, then displays channel with soccer program
IPTV system MobileTV system
Mobile Network
i/w i/f
Internal i/f Internal i/f
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Work Proposals2
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Work Method
Classical standard work chaining
Use case collection
Requirement definition
Architecture definition
Interface definition
Testing ?
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Overall Picture
Content Delivery
HGw
Mobile Content Delivery
IPTV systems
MobileTV systems
Internet
Content Providers
i/w ?
i/w ?
Access
i/w ?
Mediation ?
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Content Distribution
Proposed Goal
Enable timely distribution of content from source to sink with efficient resource usage
Motivation
Distribution not always efficient, or timely (especially from internet)
Possible Subjects
Content provider interface
Content Distribution interfaces
P2P or not P2P : why, where ? An implementation issue ?
Content Protection impact ?
PVR in content distribution ?
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Convergence in *TV
Proposed Goal
Enable interoperation between *TV systems and support specific use cases
Motivation
Convergence not specified outside of Silos
Possible subjects
Billing, Profile access
Cross system notification, program correlation
Support of rich content guides ?
…
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A word on Content Protection
Many competing technical options in the marketplace
OMA DRM, DVB CA, DVB CPCM, Marlin,…
Huge dispute, not going to be settled here, let’s avoid the debate
Potential to be a significant roadblock for many use cases
Some of it technical, some of it business models
What is remaining ?
Impact of content protection aspects on some use cases– Opacity of transmitted content (no access to I-frames,…)– Per-session encryption impact on caching
DRM extensions to support right export/import ?
Defining key roadblocks to use cases– Use as a tool for CP solution selection ?
Define required support for richer business models, ultimately provide it ?– Not selecting business models, but enabling– Ultimately decision belongs in business partners
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Working with others3
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Working with others
Partnership is key
This initiative threatens many other organisations
They claim a similar scope with their SILO
Must avoid competition to avoid creating ANOTHER solution
Must talk to stakeholders in different IPTV and MTV organisations (DVB, TISPAN, OMA, OIPTVF, ATIS IIF, ITU-T IPTV GSI, 3GPP,…)
Must defer to others when this makes sense
Same use cases, same operational constraints and features in same environment
When work programme is realistically more timely
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Existing and upcoming work examples
OMA
Working on IPTV extensions to its mobileTV for BCAST 2.0
DCD
DVB
Working on Open Internet Content Distribution with P2P
IPDC
…
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