[Ns-developers] EDCA and WifiRemoteStation

[Mathieu Lacage]

On Wed, 2009-05-20 at 17:39 +0200, Ramon Bauza wrote:
> Hello,
> 
> I would like to tell you something I have observed regarding the EDCA
> mechanism and the WifiRemoteStation. I have realized that different packets
> addressed to the same peer station contending for the medium at the same
> time but enqueued in different AC queues share the same WifiRemoteStation.
> This means that these packets share also the same m_slrc and m_ssrc
> variables. Therefore, when an ACK is not received for a transmitted packet,
> the common m_slrc variable would be incremented causing a reduction of the
> transmission opportunities for the rest of the packets (destinated for the
> same station but enqued in different AC queues).  Am I right about my
> observation? If am not wrong, m_slrc and m_ssrc variables should be

I think that you are right.

> considered per packet and not per peer station.

Well, they are both per packet and per peer station. I don't have any
bright idea on how to fix this problem for now.

regards,
Mathieu