80 MHz channel - Station data

[Ann Lo]

Hi Michal,

This is good to know.

Thanks,
Ann

On Wed, Feb 3, 2016 at 11:39 PM, Michal Kazior <michal.kazior at tieto.com> wrote:
> On 4 February 2016 at 05:01, Ann Lo <annlo.tech at gmail.com> wrote:
>> Hi,
>>
>> When we set up 80MHz channel between AP and client station, we use the
>> iw station dump command to get the "rx bitrate" of the client station.
>> We have noticed that not only the MCS changes, the NSS also changes.
>> Is it normal to have dynamic values of NSS when we do iperf using 80
>> MHz channel?
>>
>> Some data on "rx bitrate" of the same client station is as follows:
>>
>> rx bitrate:     58.5 MBit/s VHT-MCS 1 80 MHz VHT-NSS 1
>> rx bitrate:     702.0 MBit/s VHT-MCS 5 80MHz VHT-NSS 3
>>
>> We use kernel 3.14.28 and WLE900VX.
>
> Yes, this is normal. "rx bitrates" reports rate seen in most recent
> Rx-ed frame. Each frame can be transmitted at a different rate by
> stations.
>
>
> Michał