Designed specifically for

　　the efficient and economical

　　distribution of multimedia content

　　to millions of subscribers

　　FLO. (forward link only) technology reduces the cost of delivering the same multimedia content to large numbers of users simultaneously. It also enhances the user experience — allowing consumers to “surf” channels of content on the same mobile handsets they use for traditional cellular voice and data services. In designing FLO technology, QUALCOMM. has effectively addressed key challenges involved in the wireless delivery of multimedia content to millions of subscribers. Unencumbered by legacy terrestrial or satellite delivery formats, FLO offers better performance for mobility and spectral efficiency with minimal power consumption.

　　DESIGNED FOR POWER EFFICIENCY

　　FLO technology is designed for use in mobile devices in which battery consumption is critical. FLO technology has unique capabilities that allow it to access a small fraction of the total signal transmitted without compromising either frequency or time diversity, thus minimizing power consumption. This allows for long play times and minimal impact to standby time.

　　FASTER ACCESS TO PROGRAMMING

　　FLO technology minimizes program channel acquisition time – in most cases, to less than two seconds. Mobile users can channel surf with the same ease as they would with digital satellite or cable systems at home.

　　LOW NETWORK DEPLOYMENT COSTS

　　The benefits of FLO technology are maximized in markets where available spectrum and

　　regulations permit high-power transmission. Given spectrum availability, FLO can be deployed across wide geographic regions using a network of transmitters, typically spaced about 50 km apart. An entire major metropolitan area can be covered effectively with 2 or 3 transmitters. The costs of deploying and managing a FLO network are significantly less than those involved with traditional WWAN packet-data networks or alternative multicast technologies which require significantly more sites to cover the same region.

　　WIDE AND LOCAL SERVICE AREAS

　　FLO technology supports the coexistence of local and wide-area coverage within a single RF channel. By utilizing a single frequency network (SFN), it eliminates the need for complex handoffs for coverage areas. The content that is of common interest to all the subscribers in a wide area network is synchronously transmitted by all of the transmitters. Content of regional or local interest can be carried in a specific market. This per-market control is central in offering the ability to blackout and retune based on any contractual obligations associated with specific programming.

　　LAYERED MODULATION/SOURCE CODING

　　To provide the best possible quality of service, FLO technology supports the use of layered modulation. With layered modulation, the FLO data stream is divided into a base layer that all users can decode and an enhancement layer that users with higher signal-to-noise ratio (SNR) can also decode. The majority of locations will be able to receive both layers of the signal, with the base layer having superior coverage as compared to an unlayered mode of similar total capacity. The use of layered modulation and source coding allows for graceful degradation of service and the ability to receive in locations or at speeds that could not otherwise have reception. For the end user, this efficiency means that a FLO network can provide a larger number of better-quality services, especially video.

　　SUPERIOR SERVICE, WITH FEWER RESOURCES

　　Due to the efficiency gains realized in the design of the FLO air interface in terms of time

　　diversity, error-correction-code performance, protocol efficiency and the application of layered source coding and modulation, FLO technology can deliver equivalent or superior service with roughly half the spectrum and less than half the infrastructure, when compared to formats based on legacy broadcast standards. The implications are significant relative to the cost and breadth of services that can be delivered. FLO technology optimizes the operational cost and spectral efficiency for the operator while optimizing the end-user experience.

　　HIGH CAPACITY MEANS MORE CHANNELS

　　A reasonable programming lineup for 30 frame-per-second QVGA video with stereo audio in a single 6 MHz bandwidth frequency allocation is 20 live streaming video channels which can be split between national, regional and local content. This can be delivered concurrently with 50 nationwide “non-real-time” channels (consisting of pre-recorded content) and 15 local “non-real-time” channels, with each channel providing up to 20 minutes of content per day. The allocation between local and wide area content is flexible and can be varied during the course of the programming day, as desired. In addition to wide-area and local content, a large number of IP data channels can be included in the programming line-up.

　　The above diagram is an example of how FLO technology may be deployed. In this example, content that is representative of a linear real-time channel is received directly from content providers utilizing off-the-shelf infrastructure equipment. Non-real-time content may be received over the Internet. The content is then reformatted into FLO packet streams and redistributed over a single frequency. This distribution point for the FLO packet streams is facilitated with the help of the MediaFLO Media Distribution System (MDS). The transport mechanism for the distribution of this content may be via

　　satellite, fiber, etc. At one or more locations in the target market, the content is received and the FLO packets are converted to the FLO waveform and radiated out to the devices in the market. If any local content is provided, it is combined with the wide area content and radiated out as well. Those devices that have subscribed for the service may receive the content. A 3G cellular network is an integral component of the deployment and is utilized to provide interactivity and facilitate user authorization to the service.

　　A NEW CHAPTER IN WIRELESS MULTIMEDIA

　　With QUALCOMM FLO technology, the broad delivery of wireless multimedia services is now more economical, more efficient and more accessible than ever before. FLO technology was designed from inception to meet global market demands for wireless

　　multimedia services. The result: wireless subscribers can now have greater access to better multimedia services.