approaches to home connectivity t-109.7510 research seminar on telecommunications business marko...
TRANSCRIPT
Approaches to Home Connectivity
T-109.7510 Research Seminar on Telecommunications Business
Marko Berg
Agenda
Background for Home Connectivity Exemplary Use Case Scenarios Current Technologies Universal Plug and Play (UPnP) Digital Living Network Alliance (DLNA) UPnP and DLNA in the Market Conclusions Questions
Need for Home Connectivity
Technological advances• Picture and voice quality
• Network bandwidth
• Connection options
• Communication mechanisms and mobility
Resulting in more devices and new functions
Need for Home Connectivity (2)
New ways of acquiring content• Over the Internet
• From local network
• Cameras
• Audio and video recording devices
• Broadcast systems
Resulting in the need to transfer content between several devices
Need for Home Connectivity (3)
Technical solutions exist for most problems• Discovery of devices in the network
• Connecting over different types of networks
• Transferring images, audio and video
• Storing and sourcing media in a network
The issue is one of interoperability and transparency – standardization needed
Exemplary Use Cases
Case 1: Image Display from Multiple Sources
Alice’s TV
Alice’s PC
Betty’s MobilePhone
Alice
Betty
2.
4.
3.
1.
Exemplary Use Cases (2)
Case 2: Video Service Mobility
Family room TV Bedroom TV
2.
AliceBobCharlie
1.2.3.
Set-top-Box
1.
Exemplary Use Cases (3)
Case 3: Central Media Source
Internet
1.
2.
Bob
1-2.
3.
3.
Current Technologies
Zeroconf• Bonjour by Apple
Jini• Java technology
Universal Plug and Play (UPnP) Digital Living Network Alliance (DLNA
Universal Plug and Play
Standards developed by UPnP Forum• Est. 1999
• More than 800 members Designed as a interoperable M2M, P2P
protocol• Independent of network, protocol, language
• Device-agnostic – mobile, fixed, CE, PC, ...
• Platform-independent, for virtually any purpose
Universal Plug and Play (2)
Defines Device Control Protocols (DCP) in six device categories• Audio/Video
• Home Automation
• Networking
• Printer
• Remoting
• Scanner
Universal Plug and Play (3)
Protocol functionality• Addressing
• Discovery
• Description
• Control
• Eventing
• Presentation
Digital Living Network Alliance
DLNA is an industry consortium• Est. 2003, more than 200 members
• Develops guidelines for home connectivity
Home environment seen as three islands of devices
• Consumer Electronics
• Mobile Devices
• PCs and Peripherals
DLNA (2)
Use cases used as a basis for guidelines• Use cases built on technology-independent
needs – not likely to change soon
Accepted standards and practices used• Not necessarily open, but accessible
DLNA (3)
Guidelines define building blocks for implementation• Technologies defined for all parts of
interconnection• Network technology
• Device discovery
• Media transport
• Content formats
• Communication protocols
DLNA (4)
Three device categories• Home Network Devices
• Mobile Network Devices
• Home Interoperability Devices
Targeted only to home environment• Future extensions possible
UPnP and DLNA in the Market
More UPnP devices• Longer availability
• Suitable for more specific purposes
Devices available in all DLNA categories• More promotion by the consortium
• DLNA also targets consumers
Conclusions
Establisment of DLNA might indicate deficiencies in UPnP
UPnP leaves a lot up to the implementations• Interoperability might remain partial and focused
DLNA provides a heavier, but also more comprehensive solution• Impressive support from the industry
• Might have better chances in the long run
Questions?
Thank you!