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Mobile TV is television service delivered to subscribers via mobile telecommunications networks, such as the mobile phone carriers. South Korea is at the forefront of this developing sector and BT in the United Kingdom was the first company outside Korea to implement Mobile TV. Image File history File links Question_book-3. ... Image File history File links Emblem-important. ...

Overview

Mobile TV involves bringing TV services to the mobile phones. It combines the services of a mobile phone with television content and represents a logical step both for consumers and operators and content providers. Mobile TV over cellular networks allows viewers to enjoy personalized, interactive TV with content specifically adapted to the mobile medium. The services and viewing experience of mobile TV over cellular networks differs in a variety of ways from traditional TV viewing. In addition to mobility, mobile TV delivers a variety of services including video-on-demand, traditional/linear and live TV programs. Another exciting opportunity for users is Mobile TV pod casts, where content is delivered to a user’s mobile on demand or by subscriptions. Stored locally on the handset, this content can then be viewed even when there’s no network connection. And a service provider can schedule the delivery to “off-peak” hours, for example during the night. Interactive television describes any number of efforts to allow viewers to interact with television content as they view. ... Video on demand (VOD) systems allow users to select and watch video and clip content over a network as part of an interactive television system. ...

Technically, there are currently two main ways of delivering mobile TV. The first is via a two-way cellular network and the second is through a one-way dedicated broadcast network. These include digital video broadcasting-handheld (DVB-H), digital multimedia broadcasting (DMB), TDtv (based on TD-CDMA technology from [IPWireless]), 1seg (based on Japan's ISDB-T), DAB and MediaFLO. None is ideal as all have drawbacks of one kind or another: spectral frequencies used or needed, signal strength required, new antennas and towers, network capacity required, or business model. DVB-H (Digital Video Broadcasting - Handheld) is one of three prevalent mobile TV formats. ... Possible meanings: Dave Matthews Band Diamond Mind Baseball Digital Multimedia Broadcasting DMB Consulting Services This page expands a three-character combination which might be any or all of an abbreviation, an acronym, an initialism, a word in English, or a word in another language. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... UMTS-TDD is a mobile data network standard built upon the UMTS 3G cellular mobile phone standard, using a TD-CDMA, TD-SCDMA, or other 3GPP-approved, air interface that uses Time Division Duplexing to duplex spectrum between the up-link and down-link. ... Official 1seg logo 1seg (Katakana: ワンセグ) is a mobile terrestrial digital audio/video and data broadcasting service in Japan. ... Integrated Services Digital Broadcasting (ISDB) is the digital television (DTV) and digital audio broadcasting (DAB) format. ... MediaFLO is Qualcomms new technology to broadcast data to portable devices such as cell phones and PDAs. ... In telecommunications, and particularly in radio, signal strength transmitted signal is being received, measured, or predicted, at a reference point that is a significant distance from the transmitting antenna. ... In biology, antenna (plural: antennae) refers to the sensing organs of several arthropods. ...

Using the existing 3G (WCDMA/HSPA) network is the fastest and easiest way to get Mobile TV off the ground. It allows for the quick start an operator needs to grab the initiative and develop relationships with both customers and content providers. There is more than enough capacity in 3G networks to scale up for a mass market of Mobile TV services, particularly if an operator has HSPA as this will provide for several steps of capacity increases. And MBMS (Multimedia Broadcast Multicast Service), which means broadcast over 3G networks, will soon allow a traffic channel to be shared by all the users that are simultaneously watching the same program in the same area. MBMS complements HSPA to support higher loads in dense areas and ensure efficient network utilization. W-CDMA (Wideband Code Division Multiple Access), a wideband spread-spectrum 3G mobile telecommuncation air interface that utilizes code division multiple access (or CDMA the general multiplexing scheme, not to be confused with CDMA the standard), is a 3G mobile communications standard allied with the GSM standard. ... The High School Proficiency Assessment (abbreviated HSPA and pronounced hes-pah or sometimes just H-S-P-A) is a standardized test adminstered by the New Jersey Department of Education to all New Jersey high school students in March of their 11th grade year. ... MBMS may refer to: Multimedia Broadcast Multicast Service Margaret Brent Middle School Category: ...

However out of the 120 plus commercially launched mobile TV services worldwide, more than 90% of these are based on existing two-way cellular networks, using unicast. With unicast, content is transmitted separately from a single source to a single destination, like from a server to a mobile handset. And that is how each individual can get the content they want. With broadcast, the same content is delivered to a very large number of mobile handsets in a single transmission.

By using a combination of unicast and broadcast, network capacity and investments can be optimized. Broadcast bearers can be used for the most popular programs, and an unlimited number of additional programs and on-demand content can continue to be delivered efficiently using unicast. In the combined unicast–broadcast scenario, the user will not notice any difference in how content is delivered. The user will have a single user interface (TV client) in the terminal to access all content. This combination unicast and broadcast provides the best way to meet personalization and mass market.

Challenges

• Device Manufacturer’s challenges

1. Power Consumption: Battery technology for mobile portable devices may be stuck in a race condition. Improved battery life can be used up by the upgraded mobile content and enhanced functions. However, dashtop mobile devices can also be powered by a 12-volt vehicle battery, however vehicle batteries are not a sustainable source of power for mobile devices. Dashtop mobile equipment collectively refers to wireless mobile devices mounted on the center of vehicle dashboards. ...

2. Memory: To support the high buffer requirements of mobile TV. Current memory capabilities available will not be suited for long hours of mobile TV viewing. Furthermore, potential future applications like peer to peer video sharing in mobile phones and consumer broadcasting would definitely add to the increasing memory requirements. The existing P2P algorithms won't be enough for mobile devices, necessiating the advent of 'mobile P2P' algorithms. There is one start-up technology that claims patentability on its mobile P2P, but has not drawn attention from 'device manufacturers' yet.

3. User Interface Design: A large number of mobile phones do not support mobile TV; users have to purchase new handsets with improved LCD display and user interface that support mobile TV. This new design has to appeal to the end-users and increase the clarity of images without making the handset very bulky. The wider LCD touchscreens will be preferred by end-users and iPhone's popularity in the Unites States is part of the compelling evidence.

4. Processing Power: Device manufacturers should improve the processing power significantly to support a MIPS intensive application like mobile TV.

• Content Provider’s challenges

The mobile TV industry opens up a new market for the content specifically tailored for mobile TVs. These could include making new mobisodes –mobile episodes of popular shows which are relatively shorter in length (3 to 5 minutes), modifying the content to suit mobile TV. Providers need to think of innovative ways of editing content, increasing close-up shots for clarity on small screen, etc.

Mobile TV standards

European Union feels it's urgent to choose a single standard for mobile TV in European nations. EU seems determined to pick one standard by 2008, and indications are that EU is inclined to back Nokia-led DVB-H, while European broadcasters count on market mechanism. DVB-H (Digital Video Broadcasting - Handheld) is one of three prevalent mobile TV formats. ...

• GPRS
• 3G
• DVB-H/SH
• S-DMB (Satellite Digital Multimedia Broadcast) - South Korea, Japan
• CMMB (China Mobile Multimedia Broadcasting) - China
• MediaFLO - launched in US, trialled in UK and Germany
• ISDB-T (Integrated Service Digital Broadcasting) - Japan and Brazil
• T-DMB (Terrestrial Digital Mulitmedia Broadcast) - South Korea, Germany
• DAB-IP (Digital Audio Broadcast) - UK

Sources: BBC General Packet Radio Service (GPRS) is a mobile data service available to users of GSM mobile phones. ... 3G is the third generation of mobile phone standards and technology, after 2G. It is based on the International Telecommunication Union (ITU) family of standards under the International Mobile Telecommunications programme, IMT-2000. 3G technologies enable network operators to offer users a wider range of more advanced services while achieving... S-DMB is a hybrid version of Digital Multimedia Broadcasting. ... China Multimedia Mobile Broadcasting (CMMB) is a mobile television and multimedia standard developed and specified in China by the State Administration of Radio, Film, and Television (SARFT). ... MediaFLO is Qualcomms new technology to broadcast data to portable devices such as cell phones and PDAs. ... Integrated Services Digital Broadcasting (ISDB) is the digital television (DTV) and digital audio broadcasting (DAB) format. ... ...

See also

• 1seg
• BCAST - Mobile Broadcast Service via cellular network from Open Mobile Alliance(OMA)
• DVB-SH
• Handheld projector
• IP TV
• MediaFLO
• Mobile DTV Alliance - marketing organization
• MobiTV
• Multimedia Broadcast Multicast Service (MBMS) via the GSM and UMTS cellular networks
• Nunet
• OneTV

Official 1seg logo 1seg (Katakana: ワンセグ) is a mobile terrestrial digital audio/video and data broadcasting service in Japan. ... The Open Mobile Alliance (OMA) is a standards body which develops open standards for the mobile industry. ... DVB-H (Digital Video Broadcasting - Handheld) is a technical specification for bringing broadcast services to handheld receivers. ... Handheld or pocket projectors can be the solution to one of the fundamental problems with our ever shrinking cell phones, PDAs, digital cameras, and other portable devices. ... It has been suggested that IP Media be merged into this article or section. ... MediaFLO is Qualcomms new technology to broadcast data to portable devices such as cell phones and PDAs. ... The Mobile DTV Alliance is a marketing organization based in California that was founded in 2006 by a consortium of companies to promote open standards for mobile TV. Its goal is the rapid adoption of mobile TV technology via DVB-H and to further the mobile TV experience in North... MobiTV, Inc. ... Multimedia Broadcast Multicast Service (MBMS) is a broadcasting service that can be offered via existing GSM and UMTS cellular networks. ... Global System for Mobile communications (GSM: originally from Groupe Spécial Mobile) is the most popular standard for mobile phones in the world. ... Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) mobile phone technologies. ... nunet is a global provider of mobile and IPTV video management solutions for broadcasters, media brands and Mobile Network Operators. ... One TV is the first French TV bouquet made for mobile. ...

External links

• EU back mobile TV standard
• Mobile Tv Technologies-DVB-H,DMB and 3G
• Smoonix TV,The First Mobile Animation Channel
• Onetv
• Mobibase, the Mobile Entertainment Company.
• Ericsson Mobile TV
• nunet Mobile TV CMS
• GoTV: mobile TV content specifically for wireless devices
• Tips to add mobile TV to a handset
• Economics Digital TV Development: Techno-Economic Analyses and Generic Modelling, covering also Mobile TV; Growth factors.
• New Battery Tech Still Years Away
• Independent mobile TV research from Sound Partners