3 ms·
Whitespace is a mess. Uncertain regulatory restrictions, narrow channels, lack of standardization. That said, it's got a lot of potential for specific uses, a
by willidiots 15y ago
Whitespace is a mess. Uncertain regulatory restrictions, narrow channels, lack of standardization. That said, it's got a lot of potential for specific uses, as this article shows.
The CSMA congestion problem already exists in the WISP world. Ubiquiti built their own in-house TDMA protocol to get around it. I think Alvarion and Canopy have similar, if simpler, timeslotting capabilities.
What's interesting is that the 802.11 standard actually includes a Point Coordination Function for this sort of application, but very few (if any) chipsets have ever implemented it.