I don't understand where this advocacy of Wi-Fi for wide area networks comes from. The industry has long since moved away from the so flawed BPL and other limited (insufficient) technologies to Wi-Max, Wi-Bro, and other possible solutions such as the upgrade to Motorola's Canopy. The current standard in development is 802.16
Meanwhile, for Wi-Fi (local networks), 802.11s involving mesh networks and wideband spread spectrum is also in development; 802.11n already approved as an upgrade to 802.11g.
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