By comparison with multicast, conventional point-to-single-point delivery is called unicast, whereas delivery to every node of the network is broadcast. FLO was designed from inception for the efficient and economical distribution of multimedia content to a large number of mobile users.
These challenges include quality of service, data capacity, power consumption, coverage and mobility. FLO technology is being made available to an industry-led group for the purpose of bringing a cooperative specification to standards development organizations for consideration for adoption.
In a MediaFLO network, content that is representative of a linear real-time channel is received directly from content providers, typically via a C-band satellite in standard definition MPEG-2 format, utilizing off-the-shelf infrastructure equipment. The use of a standard definition as a source content provides sufficient resolution to allow for efficient transcoding to the QVGA resolution supported by the FLO network. This non-real-time content is delivered according to a pre-arranged schedule and stored on the device for later viewing.
Only those devices that have subscribed for the service may receive the content. The content may be stored on the mobile device for future viewing, in accordance to a service program guide, or delivered real-time for live streaming to the user device given a linear feed of content.
Content may consist of high-quality H. The interactivity provided via the 3G network includes purchase and download. FLO has a unique capability that allows it to access a small fraction of the total signal transmitted without compromising either frequency or time diversity.
The mobile device receiver circuitry only powers up during the time periods in which the desired content stream is transmitted; all other times it is powered down. The receiver on time automatically adapts to variable data rates as delivered. FLO technology minimizes program channel acquisition time. In most cases, it is less than two seconds. Mobile users can channel surf as easily as they would with digital satellite or cable systems at home.
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