1. IPTV

2. Agenda
 Introduction.
 Architecture.
 IPTV Services.
 Underlying Protocols.
 Contact between User and IPTV.
 Privacy and Security.
 Transport models.

3. Introduction

4. IPTV
 Internet Protocol Television(TV + IP).
 is a system through which television services are delivered using
the Internet protocol suite over a packet-switched network such as
the Internet.
 is defined as multimedia services delivered over IP based networks
managed to provide the required level of quality of service and
experience, security, interactivity and reliability.

5. IPTV and Internet TV.
 IPTV


:
delivered to TV set, not PC
A set-top box (STB) or set-top unit (STU)
 Internet TV (ITV):

anyone can create an endpoint and publish that on a
global basis. (YouTube)

6. Why IPTV?
 Consumers want more and higher quality service.
 IPTV has the potential to offer an interactive, customized
experience.
 Network infrastructure today has become highly evolved
and is required to support converged IP applications.

7. Architecture
 Depending on the network architecture of the service provider
 there are two main types of video server architecture that can be
considered for IPTV deployment centralized and distributed.

8. IPTV services
 live TV
with or without interactivity related to the current TV
show.
 Time-shifted TV
Catch-up TV (replays a TV show that was broadcast
hours or days ago)
Start-over TV (replays the current TV show from its
beginning).
 Video On Demand(VOD)
browse a catalog of videos, not related to TV
programming.

9. IPTV Protocols
The primary underlying protocols:
 Internet group management protocol (IGMP):
live multicast stream.
changing from one live multicast stream to another.
 real time streaming protocol (RTSP):
based unicast only live and VoD streaming.
 Hyper Text Transfer Protocol(HTTP)

10. Contact between User and IPTV
How to subscribe to IPTV ?
Constraints to subscribe IPTV
How to send from IPTV to User ?
How can I get IPTV ?

11. How to subscribe to IPTV
 User can subscribe to it over broadband local networks
(LAN).
Broadband




support QOS.
Multicast , Separation of end user traffic.
Differentiate between services.
Must support Secure and Robust.

12. Constraints to subscribe IPTV
 Digital TV.
 High speed internet connection.
 Bandwidth.
 Set-top-box

13. How to send from IPTV to User ??
Sending ways
One-to-one
(Unicast)
One-to-many
(Multicast)

14. One-to-one (Unicast)
 A Model required to deliver unique content to a
single user.
 Point-to-Point connection between user and the
media in the network.

15. One-to-many (Multicast)
Beginning
 As a single stream that is transported through the
network .
 Then duplicated for hundreds or even thousands of
end-users .
Ending
 Receiving same data at same time without
overloading the network or video server .

16. One-to-many (Multicast)
Multicast
1. Efficiently Controls network traffic
2. Reduces server and CPU loads
3. Eliminates traffic redundancy
4. Makes Multipoint applications possible

17. Now, How can I get IPTV ???
Distribution
Models
LIVE
content
Stored
content

18. LIVE and Stored Content
LIVE content
 Multicast stream.
 Start from where it is.
 No control.
Stored content
 Unicast stream.
 Start from beginning.
 Control it (play, pause, stop).

19. Privacy and Security
 IPTV
The home network must be a closed one.
 Users
It should be a secure network where
access is limited only to users and
concerned devices within the home.

20. Transport Model
Transport
Model
Centralized
Distributed

21. Centralized Model
 From one broadcast center.
 Easy and simple to manage.
 Cheaper.
 Bandwidth limitation.

22. Distributed Model
 Several systems.
 Synchronization.
 More maintenance.
 Very reliable.
 No limit on usage.