vissu iptv

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8/6/2019 Vissu Iptv


CONTENTS

� Introduction� What is IPTV

� Architecture of IPTV

� IPTV- Key Protocols

� Elements of IPTV

� Network models� Network infrastructure

� Interactive of IPTV

� Enabling technologies of IPTV

� Advantages of IPTV

� Drawbacks of IPTV

� Conclusion

� Future enhancement

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INTRODUCTION

�Recent development in technology combining the best of

network technology and content compression techniques.

� It have a new way of TV made possible.

�

A system through which digital television service isdelivered using the Internet architecture

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WHAT IS IPTV

� Still evolving

� Digital TV delivered using technologies used for

computer network. Internet Protocols (http, rtsp, igmp).

� A TV like µquality of service¶ (always on, reliable).

� Can be µlive¶ or pre-recorded (on-demand).

� Usually over a managed/closed network.

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ARCHITECTURE OF IPTV

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IPTV- Key Protocols

� HTTP

� RTSP

� IGMP

Request

Response

play

pause

record

Firefox, Internet Explorer

Real Player, Windows Media Player

(streamed video)

(hyper-text-

transfer-protocol)

(real time streaming

protocol)

- connecting to multicast stream (TV channel)

- changing from one channel to another(internet group

management

protocol)

© BBC 2008

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ELEMENTS OF IPTV

�

National head end�Regional head end

�DSLAM

�STB

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Network models

Cloud model: overestimate P2P benefits.

Physical model: more practical

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Cloud Model

�

Simple for modeling� Does not consider the constraints of the underlining

service infrastructure

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Physical Model

B1N

B1S

B2S

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NETWORK INFRASTRUCTURE

Single Cast Infrastructure:

Data is sent from the VOD server to a single

destination.

Multi Cast Infrastructures:

A single source sends data to multiple destinations at

a single time.

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Single Cast Infrastructure

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Multi Cast Infrastructures

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Interactive of IPTV

Content Differentiation Strategy

Traffic Congestion

Security Aspects

IPTV (qos)

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Content Differentiation Strategy

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Traffic Congestion

� Type

Broadcast TV: realtime

VoD download: non-real time download to VHOs

Realtime VoD: realtime

� Characteristics

Uni-directional and high-bandwidthVoD traffic: highly variable

Multicast for broadcast TV / unicast for VoD

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�

CAS protect the content from illegal use

Smart card based CA system

IPTV Content Security

OBSS

CAS

ECM

generator

EMM

generator

Multiplexer

TV Signal

TV

distributionnetwork

Set-Top Box

(decryption)

Call

collector

Transaction data

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� DRM Protection against theft and piracy of

digital media content

IPTV Content Security

Digitalwater

marks

RELApplication

Keygeneration

EncryptionDRM Client

module

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IPTV (qos)

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Enabling Technologies of IPTV

� Video on Demand and including (Content Download)

� Personal Video Recorder (PVR)

� Notification service

� Communication services interworking

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Advantages of IPTV

� Interactive Nature

� Triple Play service

� The economics of IPTV

� Better Compression

� Live transmission

� Video on demand

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Drawbacks of IPTV

Packet Loss

Currently No Support for HDTV

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CONCLUSION

� Now for IPTV the need of the hour is to gain mass

acceptance and to reach to the optimum technical and

commercial success.

� The result of IPTV is just the feel of a little boy telling

that the sky is falling.

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FUTURE ENHANCEMENT

Many of the world's major telecommunications

providers are exploring IPTV as a new revenue

opportunity.

Also, there is a growing number of IPTV installations

within schools, universities, corporations and localinstitutions.

vissu iptv

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