On Fri, Dec 19, 2014 at 1:28 PM, Janusz Dziedzic <janusz.dziedzic@xxxxxxxxx> wrote: > On 19 December 2014 at 12:27, Zefir Kurtisi <zefir.kurtisi@xxxxxxxxxxx> wrote: >> On 12/18/2014 05:21 PM, Helmut Schaa wrote: >>> Hi, >>> >>> [...] >>> >>> So, every channel has a CAC time of 60 seconds. >>> >>> Checking version 1.7.2 of the ETSI regulation indicates that we might >>> need some modifications to cfg80211: >>> >>> From [1] page 79: >>> >>> "NOTE 1: For channels whose nominal bandwidth falls completely or >>> partly within the >>> band 5 600 MHz to 5 650 MHz, the Channel Availability Check Time shall be >>> 10 minutes. >>> NOTE 2: For channels whose nominal bandwidth falls completely or >>> partly within the >>> band 5 600 MHz to 5 650 MHz, the Off-Channel CAC Time shall be within the >>> range 1 hour to 24 hours." >>> >>> So, for these channels we should select a longer initial CAC time. >>> >>> Is anyone aware of this issue? >>> >>> Thanks, >>> Helmut >>> >>> >>> [1] http://www.etsi.org/deliver/etsi_en/301800_301899/301893/01.07.02_20/en_301893v010702a.pdf >>> -- >> >> Hello Helmut, >> >> just forget about those aka 'weather channels' that require a pracitcally >> impossible to achieve radar detection probability rate (99.99% during CAC, see >> table D.5). >> >> They should simply be disabled, either at mac layer, or at least in ath/regd.c. >> > > You can use internal regdb and set this correctly in db.txt, eg > > + (5490 - 5600 @ 80), (27), DFS, AUTO-BW > + (5600 - 5650 @ 40), (27), (600000), DFS, AUTO-BW > + (5650 - 5710 @ 40), (27), DFS, AUTO-BW > > There are also patches for crda/wireless-regdb but not merged, so use > internal regdb. Nice, didn't know about that one. Thanks for the suggestion, Helmut -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
