http://www.broadbandwirelessreports.com/pressreleases/files/FCC-06-96A1.pdf
I know for 802.11h that DFS is supported by Mikrotik, but how about TPC?
Searching shows yes, but I can’t figure out how exactly to make use of that…
Will 5.4GHZ be added to the standard allowed frequencies for the US as 5.3GHZ & 5.8GHZ are now, or will it require the superchannels?
SMA
TPC is part of the 802.11a and 802.11g spec. You’ll notice your radios list different powers at different modulations, that’s TPC. Your radio must be capable of operating at least 6dBm lower than max EIRP (30dBm).
You can choose the country of zimbabwe to use 5.4 GHz now.
I don’t know the specifics, but I’m sure that whatever DFS Mikrotik currently supports is not what the FCC requires for use in 5.4 GHz.
That is not TPC, that’s the radio just can’t drive the higher modulations at that much power. That also does not mean that the radio has to be able to operate lower than (30 - 6 = 24)db. The radio has to be able to operate less than (30 - 6 - 16 [sector gain] = 8)db, but of course not higher than (30 - 16 [sector gain] = 14)db. It also has to do so automatically, which Mikrotik cannot currently do.
Hammy, did you read the document you posted? Take a look at III. Discussion 7. The Wi-Fi Alliance Motion for Clarification…
“… the commission required that U-NII devices operating in the 5.25-5.35 GHz band and the 5.47-5.745 GHz band employ a TPC mechanism and that they have the capability to operated at least 6 dB below the mean EIRP value of 30dBm.”
Also, I mentioned EIRP which takes the antenna into account and not strickly radio dBm power.
I did not read all 52 pages.
I apologize if I misunderstood your understanding of EIRP.
However, my belief remains that the FCC is requesting automatic power adjustment vs. a set it and forget it. I’m too lazy to read the document over and cite where I came to that conclusion, but I’m fairly certain that they stated that Transmit Power Control was to be automatic or at least something similar to automatic.
It should not matter if the FCC is requesting automatic transmit power control or not, Mikrotik should already have this feature.
what about this?
- The Extreme Networks Request for Clarification. The interim test procedures adopted in the
Report and Order include the DFS requirements that must be met for product certification. These
procedures specify that an unlicensed device operating in master mode (a master device or central
controller) must include DFS capability and be able to select a channel and establish a network by
sending enabling signals to other client U-NII devices. On the other hand, an unlicensed device operating
in client mode (a client device) must only operate under the control of the master device and not be able
to initiate a network transmission.
this almost makes it sound like any non polling based system in the U-NII band is illigal, because the client is not allowed to transmit without explicit permission from the “master”
Actually, what that means is that only the AP has to have DFS turned on. When using radar detection, you must wait 60 seconds for a clear channel before broadcasting. Only the AP needs to wait, the clients do not have to.
When should we be able to start operating in the 5.4GHZ spectrum with Mikrotik?