What mobile DTV (MDTV) is?
Which networks can deliver true DTV experience to mobile devices?
True Mobile Digital TV (MDTV) means watching live Digital TV (DTV) on mobile devices,
with a user experience similar to the one the consumers are used to on their home TV. This
means having a big variety of shows to watch, with high quality high frame rate video and
quick response time for channel switching. While there are elements in the market that try to
confuse true MDTV with other forms of TV/media distribution that offer poor quality video
and a poor offering of channels, true MDTV is distributed through a dedicated broadcast
Soon real estate professionals will be able to stream their live events and seminars through MDTV channel outlets, keeping consumers up to date on current events within their general areas. Imagine getting updates from destination places around the world, Vacation rentals for lease and a tour performed by the actual owner or representative. Choosing you vacation destination in the near future may become more real than ever before. Rest assure, RealtyGo will be looking into this futuristic type channeling to deliver real estate listings and information as efficiently as possible for everyone using Mobile devices. Keep a look out for MDTV and a new technology boom; does Youtube ring a bell… .
The most common alternatives of DTV distribution to mobile devices are to get the DTV
content through the WiFi network or through the cellular network.
This article explains the different available methods, why the true MDTV experience can be
achieved only by a dedicated broadcast MDTV network and how the MDTV offering can be
broadened by wise usage of all the methods for distribution of DTV, which can provide the
best value and best user experience to the consumer.
1 Methods for Mobile DTV distribution
1.1 Distribution of Mobile DTV through the cellular network
The cellular network is conceptually a unicast network, meaning that the content is
transmitted to each receiver individually, even if several receivers are consuming the same
content simultaneously. Thus with the current deployed and used technologies, distribution
of mobile DTV content through the cellular network is no different than the distribution of any
other data through the cellular network.
There are some technologies for broadcasting content over cellular networks, including
Multimedia Broadcast Multicast Service (MBMS), Integrated Mobile Broadcast (IMB), and
Evolved MBMS (e-MBMS) for LTE networks. These technologies are currently either not
mature yet or not widely used (i.e. deployed). Nevertheless, though currently cellular
networks use unicast transmission for distributing DTV content, this article refers also to
optional future usage of these broadcast technologies.
The main concern that is related to mobile DTV distribution is its relatively high bandwidth
requirement. Watching live DTV content at good quality on mobile devices requires
continuous reception of streaming audio/video (A/V) content at a rate of about 500Kbps.
This reception rate enables the display of good quality video at QVGA resolution and at a
frame rate of 30 frames-per-second (FPS).
In developed countries, current cellular networks are already congested with the increase of
video consumption (YouTube, etc.), live gaming, web surfing and other data-consuming
applications over mobile devices. These networks do not have the bandwidth to provide live
DTV services with a similar user experience to stationary DTV in terms of video quality and
content variety. Recent testimonials to this problem were made public by AT&T, which is
now setting a cap for its subscribers’ data usage, since they need to “ease the congestion”
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