An IPTV signal is a stream of data packets traveling across the Web.Internet TV is relatively new -- there are lots of different ways to get it, and quality, content and costs can vary greatly. Shows can be high-quality, professionally produced material, while others might remind you of Wayne and Garth broadcasting "Wayne's World" from their basement. Traditional TV networks are also easing into the technology and experimenting with different formats.
Internet TV, in simple terms, is video and audio delivered over an Internet connection. It's also known as Internet protocol television, or IPTV. You can watch Internet TV on a computer screen, a television screen (through a set-top box) or a mobile device like a cell phone or an iPod.
It's almost the same as getting television through an antenna or a series of cable wires -- the difference is that information is sent over the Internet as data. At the same time, you can find even more variety on Internet TV than cable TV. Along with many of the same shows you find on the big networks, many Web sites offer independently produced programs targeted toward people with specific interests.
Description of Mobile IPTV
How IPTV Works
There are two things that make Internet TV possible. The first is bandwidth. To understand bandwidth, it's best to think of the Internet as a series of highways and information as cars. If there's only one car on the highway, that car will travel quickly and easily. If there are many cars, however, traffic can build up and slow things down. The Internet works the same way -- if only one person is downloading one file, the transfer should happen fairly quickly. If several people are trying to download the same file, though, the transfer can be much slower. In this analogy, bandwidth is the number of lanes on the highway. If a Web site's bandwidth is too low, traffic will become congested. If the Web site increases its bandwidth, information will be able to travel back and forth without much of a hassle. Bandwidth is important for Internet TV, because sending large amounts of video and audio data over the Internet requires large bandwidths.
The second important part of Internet TV is streaming audio and video. Streaming technology makes it possible for us to watch live or on-demand video without downloading a copy directly to a computer.
There are a few basic steps to watching streaming audio and video:
1. A server holds video data.
2. When you want to watch a video, you click the right command, like "Play" or "Watch." This sends a message to the server, telling it that you want to watch a certain video.
3. The server responds by sending you the necessary data. It uses streaming media protocols to make sure the data arrives in good condition and with all the pieces in the right order.
4. A plug-in or player on your computer -- Windows Media Player and RealPlayer are two popular examples -- decodes and plays the video signal.
Mobile IPTV is a technology that enables users to transmit and receive multimedia traffic including television signal, video, audio, text and graphic services through IP-based the wired and wirelessnetworks with support for QoS/QoS, security, mobility, and interactive functions. Through Mobile IPTV, users can enjoy IPTV services anywhere andeven while on the move. In fact, IPTV is composed of Internet Protocol (IP) and TV. In other words, it implies a traditionalTV services are being migrated and converged IntoInternet space. As long as we use Internet, IP is avital component and all of advantages of IP can be used for IPTV services. Everyone agrees that IP hasplayed and will play a major role in the evolution ofnetworks and services. IP allows you to make use ofall IP based services including IPTV servicesanywhere on earth through Internet. The major goal of this paper is to raise theinterests and concerns of Mobile IPTV including thestatus of standard activities when deploying IPTVservices over wireless and mobile networks, andexpand the value of IPTV in the structure ofeveryday life.
Mobile TV Plus IP Approach
This approach uses the traditional digital broadcast networks to deliver IP-based audio, video, graphics and other broadband data services to the user on the move. This is a prime example of the increasing convergence of broadcasting, telecommunications and computing. The reason why it is pursued is to build a content environment that combines the stability and usability of broadcasting and the diverse services of Internet. To make this approach more attractive, wide areawireless networks such as cellular networks are integrated to support interactivity. The outstanding activities in this approach are Digital Video Broadcast (DVB)-CBMS (Convergence of Broadcasting and Mobile Services) andWorld DAB (DAB: Digital Audio Broadcasting) Forum DVB-CBMS is developing bi-directional mobile IP based broadcasting protocol specifications over DVB-H . DVB-CBMS already finished Phase I and currently is working in Phase II.
WorldDAB Forum is enhancing and extending Eureka 147 to support IP based services. Eureka 147 was originally developed for digital radio applications and extended to support video services. Even though this approach is classified as Mobile IPTV technically, the usage of broadcasting networks may incur the loss of individuality of IP.
Besides games, many other different kind of applications, including e.g. EPGs (Electronic Program Guide), Weather services, TV Program related applications, Interactive Advertisements, T-Government services and Chats. IPTV allows service providers to easily offer also Video related Interactive services. Video Conferencing application, Karaoke-On-Demand video content, and automatic and interactive Jukebox service for either high quality content like Music videos or the User Generated Content type of services.“Providing mobile TV free in return for receiving advertising offers perhaps the best route for boosting the numbers watching mobile TV. However, the obstacles….mean that it is difficult to see it fulfilling much more than a niche viewing role in the medium term.