Transcript 25Franceschini

MPEG4/DMIF: Advantages for PNOs
and the multimedia market
Guido Franceschini
CSELT, IT
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
What’s DMIF ?
• Delivery Multimedia Information Framework
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
Why DMIF ?
• too many delivery technologies, each with its own
peculiarities
• no consolidated QoS model
• no consolidated solution for real time multimedia
streaming at certain QoS
• different APIs for different environments (Local Files,
Broadcast sources, Interactive servers through a
variety of transports)
• network operators are not playing an active role (no
meaningful billing policies are applicable: e.g. the “flat”
Internet)
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
DMIF goals
• Favour the development of multimedia application
with QoS requirements
• Hide the delivery technology details to the DMIF User
• Make optimal usage of network resources, given
application QoS constraints
• Allow Network Operators to monitor resources being
consumed in a single session, to allow meaningful
billing policies
• Ensure interoperability between end-systems
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
The DMIF approach
D M I F
The multimedia content delivery integration framework
The Broadcast Technology
The Interactive
Network Technology
Internet,
ATM,
etc.
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
Cable,
Satellite,
etc.
The Disk Technology
CD,
DVD,
etc.
The generic MPEG4 architecture
media related
Compression Layer
ESI
Systems Layer
DAI
delivery related
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
Delivery Layer
DMIF communication architecture (1)
Broadcast
source
Local
Local
Storage
App
Network
DAI
Remote
App
DAI
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
DMIF communication architecture (2)
DMIF Filter
Local DMIF
for Broadcast
Local
App
DAI
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
Remote DMIF
(emulated)
Remote App.
(emulated)
Broadcast
source
DMIF Filter
DMIF communication architecture (3)
Local
App
Local DMIF
for Local Files
DAI
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
Remote
DMIF
(emulated)
Remote App.
(emulated)
Local
Storage
DMIF Filter
DMIF communication architecture (4)
Local
App
Local DMIF
for Remote srv
DAI
Sig
map
Network
DNI
DNI
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
Remote
App
Remote DMIF
(Real)
Sig
map
DAI
DMIF Filter
DMIF communication architecture (5)
Local
App
Local DMIF
for Broadcast
Remote DMIF
(emulated)
Remote App.
(emulated)
Local DMIF
for Local Files
Remote
DMIF
(emulated)
Remote App.
(emulated)
Local DMIF
for Remote srv
Sig
map
DAI
DNI
Remote
App
Remote DMIF
(Real)
DNI
Heidelberg, 9-11 March 1998
Local
Storage
Network
Sig
map
AIMS WORKSHOP
Broadcast
source
DAI
DMIF URLs
• Still under debate
• Requirements are:
– to represent the location of a Service
– to localize the Service on a variety of delivery
technologies, including local files, MPEG2
broadcast, IP and ATM networks
– to represent any kind of address
– to identify the control protocol to be used
(including Intelligent Networks ?)
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
QoS in DMIF
• QoS “media” metrics: used by the application
when requesting a channel
• QoS “transport” metrics: a generic network
centric translation of the above
• QoS “network” (specific) metrics: the final set
of metrics used in the native network
signaling
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
Advantages for Developers
• he just writes the application once, e.g. for using
data on the disk, and then, by just plugging in more
“network drivers” (“signaling mapping” in the
previous slides) and by feeding the application with
different URLs, that same application would run on
any network technology.
• he can begin to invest in commercial multimedia
applications with the assurance that his investment
will not be made obsolete by new delivery
technologies.
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
Advantages for PNOs
• the model allows for meaningful and flexible billing
policies in presence of QoS
• it also enables the effective exploitation of
Intelligent Networks, by plugging in an appropriate
and proprietary “network driver”
AIMS WORKSHOP
Heidelberg, 9-11 March 1998
Conclusion
• The DMIF model would benefit many players of the
multimedia industry, and provides solutions for yet
unsolved issues like:
– meaningful billing policies
– permanence of multimedia application in the
presence of new delivery technologies
– QoS management.
AIMS WORKSHOP
Heidelberg, 9-11 March 1998