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From: Ali Abedi <a2abedi@uwaterloo.ca>
To: ath9k-devel@lists.ath9k.org
Subject: [ath9k-devel] Delayed transmission configuration switching
Date: Mon, 16 Jun 2014 17:35:13 -0400	[thread overview]
Message-ID: <539F6311.4040907@mailservices.uwaterloo.ca> (raw)
In-Reply-To: <CAOpc7mE3T-qOdpoQxtRb8dN_9WqpmT0V74a8rO-U=Wa0SxgGxg@mail.gmail.com>

Hello,

We use the Ath9k driver for our 802.11 research projects. We transmit 
every frame using a new transmission rate (MCS, short GI, HT20/40). We 
cycle through all different rates (96 rates in our 3x3:3 testbed).
We noticed that when we change the transmission configuration (i.e. from 
Short GI to Long GI, and from HT40 to HT20) the next packet is sent at 
the previous configuration.


MCS    S-GI    HT40
12        1            0
12        1            0
12        1            0
6          1            0  <--- supposed to be 6  0  0  (The sender 
claims that this frame was sent using L-GI)
6          0            0
6          0            0

It seems that the hardware did not have time to switch the 
configuration. Does anyone know if this is the actual reason and if 
there is any solution?

Thank you,
Ali

      parent reply	other threads:[~2014-06-16 21:35 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-14  7:40 [ath9k-devel] RadioTap Headers in Managed Mode mahaveer gupta
2014-06-14 19:36 ` Holger Schurig
2014-06-15  3:29   ` mahaveer gupta
2014-06-16 21:35   ` Ali Abedi [this message]

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