On Sun, Jul 31, 2011 at 11:01 PM, MingAnn Ng <[email protected]> wrote:
> Hi Luis,
>
> I have apply the patch which you've provided. the result is shown as below:
>
> channel=1
> 2412 MHz: 12.600000
> 2417 MHz: 9.900000
> 2422 MHz: 11.300000
> 2427 MHz: 11.200000
> 2432 MHz: 13.600000
> 2437 MHz: 11.800000
> 2442 MHz: 12.300000
> 2447 MHz: 11.600000
> 2452 MHz: 11.300000
> 2457 MHz: 12.100000
> 2462 MHz: 10.100000
> 2467 MHz: 10.800000
> 2472 MHz: 11.100000
> 5180 MHz: 1.600000
> 5200 MHz: 2.400000
> 5220 MHz: 3.000000
> 5240 MHz: 3.200000
> 5260 MHz: 2.900000
> 5280 MHz: 4.100000
> 5300 MHz: 3.700000
> 5320 MHz: 3.000000
> 5500 MHz: 0.100000
> 5520 MHz: -0.100000
> 5540 MHz: -0.300000
> 5560 MHz: -1.100000
> 5580 MHz: -1.200000
> 5600 MHz: -1.200000
> 5620 MHz: -2.400000
> 5640 MHz: -1.000000
> 5660 MHz: -1.300000
> 5680 MHz: -1.200000
> 5700 MHz: -0.300000
> Ideal freq: 5620 MHz
>
> channel=36
> 2412 MHz: 12.300000
> 2417 MHz: 9.900000
> 2422 MHz: 11.700000
> 2427 MHz: 12.200000
> 2432 MHz: 14.300000
> 2437 MHz: 13.000000
> 2442 MHz: 12.900000
> 2447 MHz: 13.300000
> 2452 MHz: 11.500000
> 2457 MHz: 12.100000
> 2462 MHz: 12.200000
> 2467 MHz: 11.600000
> 2472 MHz: 11.100000
> 5180 MHz: 3.800000
> 5200 MHz: 2.000000
> 5220 MHz: 2.100000
> 5240 MHz: 3.200000
> 5260 MHz: 2.200000
> 5280 MHz: 3.000000
> 5300 MHz: 2.500000
> 5320 MHz: 1.900000
> 5500 MHz: -0.800000
> 5520 MHz: -0.700000
> 5540 MHz: -0.800000
> 5560 MHz: -1.600000
> 5580 MHz: -2.000000
> 5600 MHz: -1.700000
> 5620 MHz: -2.700000
> 5640 MHz: -1.800000
> 5660 MHz: -1.800000
> 5680 MHz: -1.900000
> 5700 MHz: -1.000000
> Ideal freq: 5620 MHz
>
> As you can see, the value of the interference factor is smaller than the
> last case.
>
> Is it a problem when the interference factor has a slight increment when it
> scan the assigned channel?
It could be related to the calibration runs that take effect upon
channel changes with the driver. To account for this I increased the
offcannel time on the hostapd patches but did not do this on the
standalone acs.git tree for the acs tool. I've committed a change for
this and pushed it out. Please test it.
Luis