Using a constant rate does not help (I am already doing this). When I
set the limit to 20 for example, I get any number between
1 to 20 for the number of aggregated frames. This is probably because
when we want to start the transmission
we don't always have 20 frames to aggregate so the card aggregates all
it already has
in the queue ready for transmission. So how can we wait to have 20
frames ready for transmission so that
all aggregate frames carry exactly 20 frames (constant rate)?
Thank you,
Ali
On 21/01/2014 15:59, Kamran Nishat wrote:
do it at a fix rate (1st check if duration of packet is less tahn 4ms
for ur MCS) and with nearly zero noise losses.
Kamran
On Wed, Jan 22, 2014 at 1:54 AM, Ali Abedi <a2ab...@uwaterloo.ca
<mailto:a2ab...@uwaterloo.ca>> wrote:
These mostly determine the MAX AMPDU length. I also want to
determine the minimum length, so
that I can set min=max and lock the AMPDU length.
Thank you,
Ali
On 21/01/2014 15:07, Kamran Nishat wrote:
As far as i know AMPDU length is determined by 3 constraints.
Firs maximum AMPDU length. second blockAck window (if there were
losses then this will play a role). Third is Max air time of the
AMPDU which is 4ms for some domain constraints. this comes into
play MCS is low and packet duration gets more than 4ms. See
following function in xmit.c for details
ath_tx_form_aggr <http://lxr.free-electrons.com/ident?i=ath_tx_form_aggr>
On Tue, Jan 21, 2014 at 11:49 PM, Ali Abedi <a2ab...@uwaterloo.ca
<mailto:a2ab...@uwaterloo.ca>> wrote:
Hello,
I have seen questions regarding the length of an AMPDU and
how to change
the maximum AMPDU length.
However, I require to lock the AMPDU length at a specific value.
Changing the max length does not guarantee
that all AMPDUs have a fixed length, it can be anything
between 1 to max
based on the rate of arrival of new frames.
Is there a mechanism to force the card to wait to have enough
frames so
that all AMPDUs have a fixed length that we specify? In other
words, I
need all AMPDUs to aggregate X full length frames.
Thank you,
Ali
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