[BUG] QWLE900V5-18 - cannot achievie 3 spatial streams link
tt at elnovel.com
Thu Dec 12 06:42:05 EST 2013
On 11.12.2013 20:51, Janusz Dziedzic wrote:
>> Seems from driver we configure everything correctly. Rate Control is
>> in FW - so FW will decide what NSS/MCS to use. Here we see our devices
>> works fine with 3x3.
>> You can try to use fixed_rate setting. You will have to apply some
>> patches from mac80211-next/group:
>> 1) nl80211: don't clear bitrate_mask twice
>> 2) nl80211: back to default bitrate_mask correctly
>> 3) nl80211/cfg80211: bitrate_mask, rename mcs to ht_mcs
>> 4) nl80211: add VHT support for set_bitrate_mask
>> 5) ath10k: add set_bitrate_mask callback - this I will send in few minutes
>> 1) iw: add VHT MCS/NSS set support to set bitrates
>> After that just run ap and: iw wlanX set bitrates legacy-5 ht-mcs-5
>> vht-mcs-5 3:0
>> You should send frames from AP with NSS=3, MCS=0
> BTW Do you have same problem with HT, or only with VHT?
For HT 3x3 MIMO is working fine. The issue occurs only for VHT.
Thank you for your suggestions, I'll apply the patches and try to force
3 spatial streams manually. Hope it will work.
BTW: Which firmware and driver versions you were using in your tests ?
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