The above frequencies are allowed by FCC part 97 to amateur radio
operator as primary use, this doesn't even cover the secondary and
tertiary uses, just where amateurs are primary. Frankly I disagree with
flat out add this to the US reg domain but we would just add a "97" reg
domain for licensed users.
This also introduces a new issue in crda of setting not only power
limits but power limits based on modulation. It is permitted to use
DSSS up to 100 watts, however, OFDM is permitted up to 1500 watts.
In all honesty I am not really sure this is a good time to start adding
this stuff but since thinking about it is exposing flaws in crda I
figured I would at least mention it.
Thanks,
Rick Farina
Luis R. Rodriguez wrote:
> On Mon, Nov 24, 2008 at 3:18 PM, Richard Farina <[email protected]> wrote:
>
>> Luis R. Rodriguez wrote:
>>
>>> On Mon, Nov 24, 2008 at 02:43:19PM -0800, Richard Farina wrote:
>>>
>>>
>>>> The above frequencies are allowed by FCC part 97 to amateur radio
>>>> operator as primary use, this doesn't even cover the secondary and
>>>> tertiary uses, just where amateurs are primary.
>>>>
>>>>
>>> NACK -- For the US we use the wireless regulatory database for Part 15
>>> rules with 802.11 in mind.
>>>
>>>
>>>
>> Not only do I understand your reasoning, but I also agree. Please do
>> consider the following (from that same email):
>>
>
> Thanks :)
>
>
>> This also introduces a new issue in crda of setting not only power limits
>> but power limits based on modulation. It is permitted to use DSSS up to 100
>> watts, however, OFDM is permitted up to 1500 watts.
>>
>> Would it be an unreasonable request to have crda support modulation
>> restrictions and power limit based on modulation restrictions?
>>
>
> This is odd, first time I hear about such a thing. Do you have a
> pointer to Part 15 rules which clarifies this?
>
>
Again, I'm only familiar with FCC regulations but I don't believe this
is required for Part 15. The IEEE802.11 rules do allow for some odd
stuff but the really odd stuff tends to be handled in hardware. For
instance, we can only use OFDM on the 5GHz bands, no DSSS is permitted.
The hardware handles this for us I think, that or somewhere deep dark
and scary that I've never seen in the driver. Additionally .11a
provides three different transmit power levels based on the frequency
band you are in (and the use case). What I would need this additional
feature for is licensed use but I'm sure that somewhere in the world,
someone has a unlicensed limitation such that would make this relevant.
I suppose we can all wait around until I can successfully google such a
case or someone with relevant first hand experience comes along, but
frankly, if it isn't that painful to do it would allow the licensed
users a much greater flexibility to use the hardware without
accidentally breaking the law. Please consider it a request without
official requirement, if someone is bored, great, otherwise I'll either
learn to code better or find someone who is bored :-)
thanks,
Rick Farina
> Luis
>
>
On Mon, Nov 24, 2008 at 02:43:19PM -0800, Richard Farina wrote:
> The above frequencies are allowed by FCC part 97 to amateur radio
> operator as primary use, this doesn't even cover the secondary and
> tertiary uses, just where amateurs are primary.
NACK -- For the US we use the wireless regulatory database for Part 15
rules with 802.11 in mind.
Luis
On Mon, Nov 24, 2008 at 3:18 PM, Richard Farina <[email protected]> wrote:
> Luis R. Rodriguez wrote:
>>
>> On Mon, Nov 24, 2008 at 02:43:19PM -0800, Richard Farina wrote:
>>
>>>
>>> The above frequencies are allowed by FCC part 97 to amateur radio
>>> operator as primary use, this doesn't even cover the secondary and
>>> tertiary uses, just where amateurs are primary.
>>>
>>
>> NACK -- For the US we use the wireless regulatory database for Part 15
>> rules with 802.11 in mind.
>>
>>
>
> Not only do I understand your reasoning, but I also agree. Please do
> consider the following (from that same email):
Thanks :)
> This also introduces a new issue in crda of setting not only power limits
> but power limits based on modulation. It is permitted to use DSSS up to 100
> watts, however, OFDM is permitted up to 1500 watts.
>
> Would it be an unreasonable request to have crda support modulation
> restrictions and power limit based on modulation restrictions?
This is odd, first time I hear about such a thing. Do you have a
pointer to Part 15 rules which clarifies this?
Luis
Luis R. Rodriguez wrote:
> On Mon, Nov 24, 2008 at 02:43:19PM -0800, Richard Farina wrote:
>
>> The above frequencies are allowed by FCC part 97 to amateur radio
>> operator as primary use, this doesn't even cover the secondary and
>> tertiary uses, just where amateurs are primary.
>>
>
> NACK -- For the US we use the wireless regulatory database for Part 15
> rules with 802.11 in mind.
>
>
Not only do I understand your reasoning, but I also agree. Please do
consider the following (from that same email):
This also introduces a new issue in crda of setting not only power
limits but power limits based on modulation. It is permitted to use
DSSS up to 100 watts, however, OFDM is permitted up to 1500 watts.
Would it be an unreasonable request to have crda support modulation
restrictions and power limit based on modulation restrictions?
Thanks,
Rick Farina
> Luis
>
>
On Mon, Nov 24, 2008 at 05:42:00PM -0800, Richard Farina wrote:
> Luis R. Rodriguez wrote:
> > On Mon, Nov 24, 2008 at 3:18 PM, Richard Farina <[email protected]> wrote:
> >
> >> Luis R. Rodriguez wrote:
> >>
> >>> On Mon, Nov 24, 2008 at 02:43:19PM -0800, Richard Farina wrote:
> >>>
> >>>
> >>>> The above frequencies are allowed by FCC part 97 to amateur radio
> >>>> operator as primary use, this doesn't even cover the secondary and
> >>>> tertiary uses, just where amateurs are primary.
> >>>>
> >>>>
> >>> NACK -- For the US we use the wireless regulatory database for Part 15
> >>> rules with 802.11 in mind.
> >>>
> >>>
> >>>
> >> Not only do I understand your reasoning, but I also agree. Please do
> >> consider the following (from that same email):
> >>
> >
> > Thanks :)
> >
> >
> >> This also introduces a new issue in crda of setting not only power limits
> >> but power limits based on modulation. It is permitted to use DSSS up to 100
> >> watts, however, OFDM is permitted up to 1500 watts.
> >>
> >> Would it be an unreasonable request to have crda support modulation
> >> restrictions and power limit based on modulation restrictions?
> >>
> >
> > This is odd, first time I hear about such a thing. Do you have a
> > pointer to Part 15 rules which clarifies this?
> >
> >
> Again, I'm only familiar with FCC regulations but I don't believe this
> is required for Part 15.
CRDA only speaks Part 15 rules for FCC as its only used for
802.11 right now. Feel free to expand it to use other stuff
but we also need to ensure it keeps working as it was and
there will also need to be a good use case for it to be merged.
> The IEEE802.11 rules do allow for some odd
> stuff but the really odd stuff tends to be handled in hardware. For
> instance, we can only use OFDM on the 5GHz bands, no DSSS is permitted.
DSSS is used for 802.11b and pre 802.11b only, covered under
IEEE-802.11-2007 section 15 and are for rates 1Mbit/s and 2Mbit/s.
> The hardware handles this for us I think, that or somewhere deep dark
> and scary that I've never seen in the driver.
Since this is 802.11{FOO} related we need not care about it as yes, it
is hardware specific.
> Additionally .11a
> provides three different transmit power levels based on the frequency
> band you are in (and the use case).
CRDA is band agnostic on purpose -- originally I started with UNII band
notion stuff but that got pretty silly quickly. Johannes also knocked
some good sense into me.
What we have now allows us human creatures to assign name values to
whatever bands we want at any point in time and not worry about
what name they fall under, and it still works. This makes it more
FCC agnostic, which became a very important requirement. So please
consider *all* regulatory agencies when thinking about the overall
design of CRDA.
> What I would need this additional
> feature for is licensed use
User your own custom database and CRDA! That's one of the reasons
why it was ISC licensed. Go do what you like with your own db (including
using sharks with lasers on their head).
> but I'm sure that somewhere in the world,
> someone has a unlicensed limitation such that would make this relevant.
When you do find concrete evidence, instead of speculating, please do
submit a patch and document your findings.
> I suppose we can all wait around until I can successfully google such a
> case or someone with relevant first hand experience comes along, but
> frankly, if it isn't that painful to do it would allow the licensed
> users a much greater flexibility to use the hardware without
> accidentally breaking the law.
CRDA allows for custom solutions, if you know what you are doing
and have a license for it, go wild.
> Please consider it a request without
> official requirement, if someone is bored, great, otherwise I'll either
> learn to code better or find someone who is bored :-)
Please only bother with sending patches which work for unlicensed
communication devices usage only.
Luis