Max no. of simultaneous APSD calls?

[kcrao]

Hi folks,

I am searching for some typical values for the maximum number of
simultaneous VoWLAN calls which can be practically achieved with
U-APSD and WMM voice prioritization enabled. I know this will depend
on the 802.11 chipset and the environment - I am just searching for
typical values to get a rough idea. I require this information to
carry out some planning. I have done some googling on this, but
couldn't come across anything solid.

Reason for this concern:
U-APSD, though good for battery power savings, is known to increase
contention. All the VoWLAN stations sleep for a fixed amount of time.
Then, they wake up almost together and try to access the medium all at
once. This may decrease the number of simultaneous calls of reasonable
quality.

Thanks!

[Planet]

While this articles (http://www.wi-fiplanet.com/tutorials/article.php/3767491) does not discuss U-APSD or WMM specifically, it does offer information on Capacity Analysis.

[kcrao]

Hi Planet,

Thanks for the info!