Hi John, all,
The following is an excerpt of the db.txt from most recent
wireless-regdb.
country US:
(2402 - 2472 @ 40), (3, 27)
(5170 - 5250 @ 40), (3, 17)
(5250 - 5330 @ 40), (3, 20), DFS
(5490 - 5600 @ 40), (3, 20), DFS
(5650 - 5710 @ 40), (3, 20), DFS
(5735 - 5835 @ 40), (3, 30)
country CA:
(2402 - 2472 @ 40), (3, 27)
(5170 - 5250 @ 40), (3, 17)
(5250 - 5330 @ 40), (3, 20), DFS
(5490 - 5710 @ 40), (3, 20), DFS
(5735 - 5835 @ 40), (3, 30)
We are under the understanding that the Canadian national rules deny the
usage of the 5490-5710 range of frequencies (ref from RSS-210), but the
range is present in the allowed range of frequencies for the CA region:
"Additional requirements for the band 5600-5650 MHz: Until further
notice, devices subject to this Section shall not be capable of
transmitting in the band 5600-5650 MHz, so that Environment Canada
weather radars operating in this band are protected."
Then again, the FCC rules (15.407) do not prohibit the mentioned range
of frequencies within the US (with DFS and limited power level) but in
the regulatory database that range is missing.
Is there a bug in the regulatory db, or am I misunderstanding something?
-Juuso
On Thu, 2011-05-05 at 08:57 -0700, ext Luis R. Rodriguez wrote:
> On Thu, May 5, 2011 at 4:21 AM, Juuso Oikarinen
> <[email protected]> wrote:
> > Hi John, all,
> >
> > The following is an excerpt of the db.txt from most recent
> > wireless-regdb.
> >
> > country US:
> > (2402 - 2472 @ 40), (3, 27)
> > (5170 - 5250 @ 40), (3, 17)
> > (5250 - 5330 @ 40), (3, 20), DFS
> > (5490 - 5600 @ 40), (3, 20), DFS
> > (5650 - 5710 @ 40), (3, 20), DFS
> > (5735 - 5835 @ 40), (3, 30)
> >
> > country CA:
> > (2402 - 2472 @ 40), (3, 27)
> > (5170 - 5250 @ 40), (3, 17)
> > (5250 - 5330 @ 40), (3, 20), DFS
> > (5490 - 5710 @ 40), (3, 20), DFS
> > (5735 - 5835 @ 40), (3, 30)
> >
> > We are under the understanding that the Canadian national rules deny the
> > usage of the 5490-5710 range of frequencies (ref from RSS-210), but the
> > range is present in the allowed range of frequencies for the CA region:
> >
> > "Additional requirements for the band 5600-5650 MHz: Until further
> > notice, devices subject to this Section shall not be capable of
> > transmitting in the band 5600-5650 MHz, so that Environment Canada
> > weather radars operating in this band are protected."
> >
> > Then again, the FCC rules (15.407) do not prohibit the mentioned range
> > of frequencies within the US (with DFS and limited power level) but in
> > the regulatory database that range is missing.
> >
> >
> > Is there a bug in the regulatory db, or am I misunderstanding something?
>
>
> Michael, any opinion on this?
Any take on this one?
-Juuso
On Thu, May 5, 2011 at 4:21 AM, Juuso Oikarinen
<[email protected]> wrote:
> Hi John, all,
>
> The following is an excerpt of the db.txt from most recent
> wireless-regdb.
>
> country US:
> (2402 - 2472 @ 40), (3, 27)
> (5170 - 5250 @ 40), (3, 17)
> (5250 - 5330 @ 40), (3, 20), DFS
> (5490 - 5600 @ 40), (3, 20), DFS
> (5650 - 5710 @ 40), (3, 20), DFS
> (5735 - 5835 @ 40), (3, 30)
>
> country CA:
> (2402 - 2472 @ 40), (3, 27)
> (5170 - 5250 @ 40), (3, 17)
> (5250 - 5330 @ 40), (3, 20), DFS
> (5490 - 5710 @ 40), (3, 20), DFS
> (5735 - 5835 @ 40), (3, 30)
>
> We are under the understanding that the Canadian national rules deny the
> usage of the 5490-5710 range of frequencies (ref from RSS-210), but the
> range is present in the allowed range of frequencies for the CA region:
>
> "Additional requirements for the band 5600-5650 MHz: Until further
> notice, devices subject to this Section shall not be capable of
> transmitting in the band 5600-5650 MHz, so that Environment Canada
> weather radars operating in this band are protected."
>
> Then again, the FCC rules (15.407) do not prohibit the mentioned range
> of frequencies within the US (with DFS and limited power level) but in
> the regulatory database that range is missing.
>
>
> Is there a bug in the regulatory db, or am I misunderstanding something?
Michael, any opinion on this?
Luis
On Wed, Jun 22, 2011 at 5:18 PM, Green, Michael <[email protected]> wrote:
> Well, the FCC & Canada regdomains should disable those TDWR channels for an AP.
> But regdomains for client devices should not disable those channels.
>
> In our licensed sw, we use different regdomains for AP vs. STA to accomplish this. Not sure how linux handles this.
In Linux, the DFS flag will prohibit initiating communication for AP,
IBSS, Mesh, or P2P in those frequency ranges as well.
Luis
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