On Wed, Apr 20, 2022 at 08:40:51PM -0600, Dennis Bland wrote: > With the 6 GHz band (U-NII-5, U-NII-6, U-NII-7, U-NII-8) in Canada, ISED > introduces the concept of a fixed PSD (Power Spectral Density) for all > supported 6 GHz channel widths. Wider channel widths have a higher noise > floor, therefore specifying a fixed PSD allows wider channels to > operate at a higher EIRP to maintain the same S/N ratio as smaller > channel widths. > > Clause 4.6.2 requires non-client (AP devices to have a maximum PSD of 5 > dBm/MHz and a maximum EIRP of 30 dBm. Clause 4.6.3 requires client (STA) > devices to have a maximum PSD of -1 dBm/MHz. Clause 4.4 specifies a > maximum channel width of 320 MHz. Clause 4.9 specifies indoor use only. > Operation on oil platforms, vehicles, boats, trains, and drones is > prohibited except on commercial aircraft above 10,000 feet altitude. > There is no IR (Initiate Radiation) restriction mentioned in the 6 GHz > specification. > > The following equation is used to calculate the EIRP from the PSD and > channel width: > > EIRP = PSD + 10*log(channel width in MHz) > > Using the maximum PSD values of 5 and -1 for APs and STAs respectively, > the EIRP in dBm for a given channel width can be calculated: > > Channel Width (MHz) AP STA > ------------------------------------------------ > 20 18 12 > 40 21 15 > 80 24 18 > 160 27 21 > 320 31 (max 30) 25 (max 24) > > For channel widths up to 160 MHz, the maximum PSD is the limiting factor. > For the 320 MHz channel width, the maximum EIRP is the limiting factor. > > Unfortunately, because there is currently no mechanism to specify > different power levels for AP and STA modes, and for different channel > widths, the smallest value has to be selected, which is 12 dBm. This > will likely cause connectivity problems with larger channel widths until > these additional parameters can be added. > > signed-off-by: Dennis Bland <dennis@xxxxxxxxxxxxxxxxx> Sorry for the delayed response. Thanks for the patch and the detailed explanation. Everything here looks good to me. The patch itself was corrupted. I fixed it up by hand, but for future patches you might try 'git send-email', or if that won't work with your email provider you can use 'git format-patch' and attach the patch file. Also note that Signed-off-by should be capitalized. I fixed that when applying. Applied, thanks! _______________________________________________ wireless-regdb mailing list wireless-regdb@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/wireless-regdb
