Re: IEEE announced approval of IEEE 802.11ac
I doubt the 5Ghz band will ever get as congested as 2.4Ghz.
Given the inherently lower range of 5Ghz consumer equipment you'll never have more APs within range as you do on 2.4Ghz now, and and the increased bandwidth on AC means the same amount of data will take less time to transmit, reducing the amount of time each channel is occupied. Even with 80Mhz channels, the most current products support, there are still over twice as many non-overlapping channel layouts available compared to 40Mhz on 2.4Ghz
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