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INTERNET PROTOCOL TELEVISION (IP-TV)
IPTV is defined as multimedia services such as video/audio/text/graphics/data delivered over IP based networks managed to provide the required level of quality of service and experience | free ppt download
(IP-TV)The Origin Of IP-TV
A TRIPLE PLAY SERVICES
Triple Play service is a concept that delivers digital
television broadcast, a telephone, and an Internet access
to people through a single broadband connection
Broadcast Telephone AccessTRIPLE PLAY SETUP USING ADSL
MODEM & SPLITTERTriple Play Services
Triple Play means the delivery of voice, data and video over
a single access subscription.
An IPTV broadband network can handle all three (voice,
data, and video) services.
The common applications are Telephony, Television and
high-speed internet services.
The telephony option offers call services such as call
forwarding, caller ID, call waiting, call screening, selective
call blocking and call conferencing.IPTV
A set-top box (STB) is an IPTV device that is commonly
used to receive and decode digital television broadcast and to
turn the signal into content which is then displayed on a
television screen or other display devices.
Professional set-top box: Professional set-top-boxes
referred to as Integrated Receiver Decoders or IRD are the
professional method of the broadcasting video and audio
contents to the television or other display devices.Hybrid IPTV set-top-boxes: This kind of IPTV set-top-boxes allow
viewers to view broadcast television and internet video on their
display screen along with IPTV services such as VOD and internet
browser by creating a new consumer TV experience.
Wireless IPTV set-top box: Wireless IPTV set-box is designed to deliver
IPTV contents over a wireless network connection.Introduction
“IPTV is defined as multimedia services such as
video/audio/text/graphics/data delivered over IP based
networks managed to provide the required level of quality of
service and experience, security, interactivity and reliability.”
•In simple terms, IPTV is video and audio delivered over an
Internet connection. You can watch IPTV on a computer
screen, a television screen (through a set-top box) or a mobile
device like a cell phone or an iPod.
•In the IPTV system, a video signal will be divided into
multiple IP packets and then the packets will be sent across the
IP network.End-to-end view of an IPTV network.Discussion of IPTV
•IPTV Broadcast are transmitting their broadcast signal over the Internet.
And require only an Internet connection and an Internet enabled device
such as a PC, HDTV connected to a PC or even a 3G cell/mobile.
•IPTV uses standard networking protocols, it promises lower costs for
operators and lower prices for users.
•IPTV doesn't require to install new Ethernet wires and without relying
on wireless technologies like 802.11, which are not optimized for
reliable delivery of video streams.Architecture
IPTVArchitecture of IPTV
Distribution servers: They provide caching and QoS control
VoD creators and servers: They retain a library of encoded VoD
content to provide VoD services.
IP routers: They route IP packets and provide fast reroute in case of
Set-Top-Boxes (STB): A STB is a device on the customer side that
interfaces with the user terminal (e.g., TV, PC, laptop, and others) with
a DSL (Digital Sub-scriber Line) or cable wiring.IP-multicast IPTV Architecture
IP multicast is a method of sending IP packets to a group of interested
IP multicast uses network infrastructure efficiently by requiring the source to
send a packet only once, even if it needs to be delivered to a large number of
A TV program is encoded at the super hub office (SHO), and then delivered
via multicast through video hub offices (VHOs), intermediate offices (IOs),
central offices (COs), digital subscriber line access multiplexers (DSLAM),
and residential gateway (RG), to the TV set-top-boxes (STB).Continued…..
SHO is for acquisition of national live TV programs.
Live TV programs are received via satellite and
processed for delivery to multiple VHOs.
VHOs are the video distribution points within each
demographic market area (DMA).
IOs and COs are located at each metropolitan area and
connect to access networks.IP-multicast IPTV Architecture Architecture
of a Peer-to-
system Peer-to-Peer IPTV Architecture
For a Peer-to-Peer (P2P) IPTV distribution, there is a source
and a group of peers watching the video. We refer to the
source and the group of peers as a torrent. The source
encodes video and disseminates the video packets into the
P2P torrent. Each peer receives packets from the source .
A mobile IPTV prototype has been designed and
implemented to support users via wireless and mobile
networks inIMS architecture for IPTV
IMS (IP Multimedia Subsystem) is an architectural framework for
delivering IP multimedia to fixed and mobile users.
The benefits are, it can offer both voice and IPTV services over the same
core infrastructure and enables the implementation of services combining
conventional TV services with telephony features (e.g. caller ID on the
TV screen) .
This architecture uses centralized server network for efficient CDN.
Use of this architecture enables the efficient broadcast of Hybrid IPTV.IMS
• Video content is compressed using either a MPEG-2 or a MPEG-4
• Live IPTV uses IGMP version 2 or IGMP version 3 of IPv4 for
connecting from one TV channel to another.
• IGMP operates within LAN's or VLAN's so other protocols.
• VOD uses UDP or RTP protocols for channel streams.Advantages
• Ability to integrate television with other IP-based services like high speed
Internet access and VoIP.
• Support maximum data speeds of 50 Mb/s to 100 Mb/s.
• Make the TV viewing experience more interactive and personalized,
provides the functionality such as pause, slow-motion, rewind, freeze, store
• Large memory is available as the recorded data can be stored on servers
provided by service providers.