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What's the problem? For its target applications 802.15.3 nicely addresses all the shortcomings of Bluetooth as well as WiFi. We may see a repeat of 802.11 though - 802.11 wasn't commercially a big success until 'b' came along and pushed the data rate from 2 to 11 Mbps. Likewise I guess 802.15.3 will see some limited success until 15.3a (based on UWB) comes along and ups the bandwidth beyond 110 Mb/s.
WiMedia is to 802.15.3 what WiFi is to 802.11. The application space is multimedia connectivity - it will replace all those messy A/V cables, firewire cables, etc. Now you can easily use a PC as a home entertainment system and wirelessly stream the video to the TV and the audio to the receiver/amplifier. Transferring videos from your camcorder to your PC will also be cable-free.
And sure, you can use it for Internet access with a DSL/cable or other (Fiber) broadband connection! I can see WiMedia replacing WiFi in the home in a few years.
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