Re: Allowing station to over-ride default VHT-oper element?

[Ben Greear <greearb@candelatech.com>]

On 06/10/2015 12:55 PM, Johannes Berg wrote:
> On Wed, 2015-06-10 at 12:29 -0700, Ben Greear wrote:
> 
>> First, is this even a valid thing to do, or does VHT imply
>> that stations are always available to do 80Mhz?
> 
> According to the spec, a VHT STA must support 80 MHz:
> 
> 802.11ac-2013, 22.1.1:
> 
> 	A VHT STA shall support the following features:
> 		[...]
> 		- 20 MHz, 40 MHz, and 80 MHz channel widths
> 
> Consequently, there's no bit indicating whether or not 80 MHz bandwidth
> is supported (like there is, for VHT, indicating 40 MHz is supported or
> not.)
> 
> Also it is invalid to advertise a VHT capabilities IE and an HT
> capabilities IE without 40 MHz.

Ok, thanks for that..one less piece of work for me to do :)

>From what I can tell, it *IS* ok to have an AP do VHT on 40Mhz though?

Thanks,
Ben



-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com