Why IPTV?
The full form of IPTV is Internet Protocol television, it is the delivery of television content over Internet Protocol networks. This is in contrast to delivery through traditional terrestrial, satellite, and cable television formats. Unlike downloaded media, IPTV offers the ability to stream the source media continuously
What is IPTV set/Media renderer?
It receives the IPTV signal and renders it on the screen.
Why
it is needed?
It makes possible to see
the video content.
What is Set-top box/Interaction device?
It Captures user input
and sends it to a central interaction server.
Why it is needed?
It makes sure the user’s interactions
get to the IPTV service provider, and can be used to change the content of
the show.
What is Home network?
Connects the different
types of equipment in the home together.
Why is ir needed?
Makes it possible for
different media stores, renderers and interaction devices to interact with each
other, and services on the global network
What is Home
gateway?
Manages addressing in the
home, registration with the service provider, and filtering of content (the
last
two functions can also be
performed by the set-top
Why is it needed?
As a firewall and address
management system, and to ensure that the user’s actions are authorized
What is IMS proxy?
Captures the request for
the video service and makes sure it gets to the right receivers, including the
QoS system.
Why is it needed?
Interconnects the network
and signalling planes of the system, and makes sure the service requests get to
the right nodes. Also connects to the profile management system
What is QoS system?
Instructs routers in the network
how their queuing mechanisms should be set up.
why is it needed?
Without QoS, video can be
delayed and result in degraded user experience.
What is IMS identity Management?
Makes sure the user is
who he claims he is, and connects the use of the identity to the relevant subscriptions
(and hence charging)
Why is it needed?
Without identity
management, anyone could use anyone else’s services; the charging systems would
have to work offline and with special
tokens to keep track of who should pay for what (as it is now)
What is IMS presence and profile management?
Keeps track of what the
user does and has done; makes sure this is registered in the system
why is it needed?
Makes it possible to personalize
content, and to know what other users are watching (if they allow the user to
see it)
What is IPTV streaming service control ?
Manages the video stream,
including switching to a different video stream when the user selection demands.
Note that this is not the
same as channel switching
why is it needed ?
Makes sure that the
program is started when requested, and eventually creates programs from
different video sources automatically on the fly
what is IPTV streaming service delivery?
Handles the streaming of
the content over the network. Interacts with the QoS Management
Why is it needed ?
Makes sure content gets
where it is supposed to go
what is Advertising insertion ?
At selected points in the
media stream, pastes in video sequences which contain commercial messages (although this could be a generic mechanism)
why is it needed?
Puts advertising in the
right place in the program
what is Interactivity server?
Captures the
interactivity requests (from the user’s IPTV session), collates them (if
required), and sends to the appropriate server(s), such as charging, profile management
and streaming service control
why is it needed?
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