delay in adhoc mode

[Jiang Jay Zhang]

Hello,

I currently work on a research project that trying to use 802.11 for 
very short communication period in adhoc mode, say finish the whole 
communication session in 1 second. I choosed HostAP as the starting 
point as it is relatively simple and its code is very clean.

We found that the association is fast (about 10ms), but a lot of time is 
wasted on scanning(Probe Request and Response). Even we spicify the 
channel and ssid with iwconfig. Is there any method to reduce the delay 
of probe in adhoc mode? And we also noticed that there is a passive mode 
of scanning in the 802.11 standard, but we don't know how to set it with 
HostAP.

I will be grateful if anyone can provide some advise.

Thanks

Jay.