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Wi<strong>f</strong>i communication starts with low data rate - DragonBoard410c - 96Boards <strong>f</strong>orum

Wifi communication starts with low data rate

Products Support DragonBoard410c
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#1

Hi @Loic,

Product based on: APQ8016E
WifI chip: WCN3660B

from the captures made during last months with different APs we see a strange behavior with the “Data rate”.
It seems that after a connection with AP, the communication always starts with lower data rates: 802.11b, 802.11g.
It can be seen in the “802.11 radio information” header of the air captures.
After some time, the data rate increases to 802.11g/802.11n rates.

It is expected that the communication will start from higher data rates and will lower it in case of communication problems.

it’s easily reproduced with Linaro – both 18.01 and 20 – just connect to AP and run openssl command – rate of traffic from device starts with 802.11b.

issue_8
issue_81786×637 152 KB

Logs are uploaded at below link:
https://arrowelectronics-my.sharepoint.com/:f:/r/personal/parth_y_shah_einfochips_com/Documents/Attachments/WifI_issue_8?csf=1&web=1&e=kijIWm

Please help us over here.

Regards,
Parth Y Shah

#2

By who? any pointer to document specifying that?

maybe you could try this patch: loic.poulain/linux.git - [no description]

#3

Thanks, @Loic we will try and update. Is the setting data rate to MCS-5 from starting, violation of the protocol?

#4

I’m not aware about anything specifying a starting data rate after a fresh association, so any rate supported by the AP can be used.