Mobile TV The Next Big “AVATAR”

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Wireless Mobile Technology

Shri R K Singh Former Eng-in-Chief D /D

 

Mobile TV

The Wireless mobile industry has already changed the way that we live, work and play by providing communications anytime, anywhere to anyone at an affordable price. A new technology in the cellular industry i.e. Mobile Television Services delivered over cellular network to handheld wireless terminals will again change the way we live. Will it be Accepted by the people?

 

Research suggests:

 

           Most transit commuters would welcome Mobile-TV for entertaining them during their long rides to & fro from home.

           Nearly 78% of respondents called mobile TV a good or excellent idea.

           More than 80% of potential users expressed a willingness to pay additional fees for mobile TV.

           Almost 50% of potential users said they would consider changing service providers to get mobile TV if the service wasn’t offered by their current network operator.

Broadcast Mobile Convergence (BMCO) study on Mobile TV

           People would be particularly interested in content such as news and regional information, sports and music.

           They view “mobility” and “flexibility” as the strongest benefits of mobile TV.

           People find mobile TV most appealing when they are travelling, using public transportation and waiting in lines.

           People indicated that “everywhere” reception was a crucial setting point as they wanted to be able to view their program indoors and out – wherever they happened to be.

           “Prime Time” of TV viewing may shift from 7 to 9 PM when people have arrived from work to 5 to 6 PM when they are on train, subway or bus ride home.

 

Technical Challenges

 

           Facility to increase the battery usage duration of receiver.

           Means to mitigate severe mobile multi-paths channels and high level of man-made noise.

           Easily access to the services when receiver leaves a given transmission cell and enter a new one.

           System should be usable in various part of the world and should offer the flexibility to be used in various transmissions bands and channel band widths.

           System should be capable to handle a number of reception, scenarios, indoor, outdoor, pedestrian and inside a moving vehicle.

           System should offer sufficient flexibility and scalability to allow the reception of the services at various speeds while optimizing transmitter coverage.

 

Transmission Technologies

 DMB_ DVB-H ISDVBT  MBMS Media-Flo  IPDC

 

 

Doordarshan Initiatives

System Parameters

Location : Akashwani Bhawan,  Parliament Street,

                                                 New Delhi.

 

Transmitter                               : 50 KW EIRP Single                                                                   Transmitter, 100 M Tower.

Transmission parameters           : 8K, 1/8 GI, QPSK, 3/4 FEC,                                                       MPE-FEC 25%

Multiplex                                   : Non Hierarchical, 8 TV                                                              services @ 384 Kbps

Frequency                                 : Channel 26 (510-518MHz)

Head end                                  : Nokia BSM 3.0

Video Format                            : H.264-AVC using Envivio                                                          4Caster M2 encoders.