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5GHz AC Channel Query re: HT80 - UK

Tried to make the subject as relevant as possible!

After reading up some more on 802.11ac today I discovered that to use 80MHz channels in the UK (or Europe) I should be looking at spacing ac units four channels apart to ensure that two APs that can see each other don't clash. At the moment I am only evaluating two APs so channel planning is not as big an issue as it will be in a proper network. However, from my list of available channels I have only 36-48 from which to choose. 

If I select 36 with HT80 on one AP and 48 with HT80 on the other, won't each AP be able to see the other via channel 48?

The country code has been correctly set to the UK in the site settings.

Am I misunderstanding something or is there something wrong here?

Thanks!

 

 

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Re: 5GHz AC Channel Query re: HT80 - UK

[ Edited ]

Hi,

 

That is not a bug. The use of DFS channels on UAP-AC (or AC Outdoor) is currently not allowed. 

 

Regulatory spec that the UAP AC/Outdoor went through only allows Outdoor UAP AC to function on Outdoor channels which is Unii2/Unii2ext/Unii3. Where Unii2/Unii2ext requires DFS and we do not support that (on AC indoor or outdoor). So Unii3 is the only band allowed for outdoors.

UAP AC = Unii1/Unii3 band support
UAP AC Outdoor = Unii3 band support.

 

FCC updated there specs recently to allow Unii1 band to be use for outdoor, however, the spec that the UAP AC went out on 2 years ago was on the old spec as the new spec was not out yet.

 

Best regards,
Mike

 

**updated for accuracy as of 01.26.2015**

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Re: 5GHz AC Channel Query re: HT80 - UK

[ Edited ]

UBNT-MikeD wrote:

Hi,

That is not a bug. The use of DFS channels on UAP-AC is currently not allowed. We are working with the appropriate regulatory domains (FCC, ETSI) to allow the use of DFS channels on the UAP-AC. Once it passes you will be able to use the remainder of band A and B. 

Best regards,
Mike


Really look forward to the DFS implementation on the AC units, since that would allow for higher TX-Power...
Any update on this?

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Re: 5GHz AC Channel Query re: HT80 - UK


psydafke wrote:

UBNT-MikeD wrote:

Hi,

That is not a bug. The use of DFS channels on UAP-AC is currently not allowed. We are working with the appropriate regulatory domains (FCC, ETSI) to allow the use of DFS channels on the UAP-AC. Once it passes you will be able to use the remainder of band A and B. 

Best regards,
Mike


Really look forward to the DFS implementation on the AC units, since that would allow for higher TX-Power...
Any update on this?


If there was, they would post about it, or there would be release notes w/ any firmware/controller updates.

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Re: 5GHz AC Channel Query re: HT80 - UK


Josh_SPITwSPOTS wrote:

psydafke wrote:

UBNT-MikeD wrote:

Hi,

That is not a bug. The use of DFS channels on UAP-AC is currently not allowed. We are working with the appropriate regulatory domains (FCC, ETSI) to allow the use of DFS channels on the UAP-AC. Once it passes you will be able to use the remainder of band A and B. 

Best regards,
Mike


Really look forward to the DFS implementation on the AC units, since that would allow for higher TX-Power...
Any update on this?


If there was, they would post about it, or there would be release notes w/ any firmware/controller updates.


That's not the answer I was looking for... Offcourse they would post about it, or put it in release notes... I was just asking for the current status.
They need approval, and that takes a lot of testing for certification (I'm well aware of that).

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Re: 5GHz AC Channel Query re: HT80 - UK

Change your region in settings to Brazil or Thailand and you get some more channels (36, 40, 44, 48, 149, 153, 157, 161, 165). Oke, it's against 'THE LAW' ooooeee... but if you're not nearby an airport I can't think of anything wrong with it Man Wink

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Re: 5GHz AC Channel Query re: HT80 - UK

[ Edited ]

btw remember... the difference between channel 36 and 40 is only 20 MHz... So a 'channel step' is 5 Mhz.

 

Channel Widths.png

 

So yes... it's very important to support DFS modes... otherwise you can't use AC properly in multi AP situations.

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Re: 5GHz AC Channel Query re: HT80 - UK

I hope, FCC and ETSI (or other authority) will allow the use of the other frequencies soon - I need it in Germany Drool5

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Re: 5GHz AC Channel Query re: HT80 - UK

bump  

 

I need it in Germany

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Re: 5GHz AC Channel Query re: HT80 - UK

Well, a 'workaround' has been given in the posts above. Icon Wink

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Re: 5GHz AC Channel Query re: HT80 - UK

I use these Unifi AP-AC in a School - in Germany - so I can nozt chance to Brazil - I should be legal ;-)

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Re: 5GHz AC Channel Query re: HT80 - UK

In addition, the 'workaround' allows for only two non-overlapping 80MHz channels (36 and then 149). Unless I'm mistaken?

I was so enthusiastic about the UAP ACs when they were announced and released. "The first enterprise access point to support 802.11ac". I've since learned that, although I still have a lot of optimism for many other ubnt products, I need to do the research and check in triplicate with other users that the marketed features are actually present and stable in the shipping product. Absolutely no gripes with my experience of EdgeMax or AirMax products so far, but I have stopped preaching about Unifi and now go Meru/Meraki or Apple AirPort depending on the budget. Believe it or not I have had fewer complaints and much better performance when I took out a bunch of AP ACs and replaced them with the ac AirPort Extremes set to fully automatic mode. It's just a shame their form factor doesn't allow for easy mounting in addition to lacking PoE. Yes, administration is on a one-by-one basis, but I spend less time administering them overall as they 'just work'. For what you get, the UAP AC is just way too expensive.

If every other manufacturer out there has had an 'ac' access point that is able to use the full spectrum for a good year or so by now, what is taking so long for the ubnt kit to be approved by the regulators?

 

Sorry for the negativity Man Sad

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Re: 5GHz AC Channel Query re: HT80 - UK

@sram - not negative at all.  In fact one of the best factual and balanced reports of someones experiences and frustrations with the "out of sync" marketing and engineering at UBNT I've seen on the forum.

 

Cheers,

Andrew

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Re: 5GHz AC Channel Query re: HT80 - UK

I agree. But the apple ac ap does have limited n/ac channels too... So thats apart from lack of managebility no solution.
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Re: 5GHz AC Channel Query re: HT80 - UK

Can you please clarify whether Ubiquiti INTENDS to add DFS support on the UAP-AC? The updated wording in January sounds like DFS support has now been abandoned.

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Re: 5GHz AC Channel Query re: HT80 - UK

You'd be best off assuming it is not intending to update the current UAP-AC product to add DFS support.

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Re: 5GHz AC Channel Query re: HT80 - UK


bengoerz wrote:

Can you please clarify whether Ubiquiti INTENDS to add DFS support on the UAP-AC? The updated wording in January sounds like DFS support has now been abandoned.


There currently are no plans to add DFS channels for any country with current UAP-AC hardware (AC v1, AC v2, AC-Outdoor).

 

Cheers,

Mike

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Re: 5GHz AC Channel Query re: HT80 - UK

[ Edited ]

Thank you for answering the question directly.  Smiley Happy

 

How can the community convince Ubiquiti to prioritize DFS for existing hardware?

 

To me, DFS matters a lot more than features like zero-handoff. As a Ubiquiti user, I can't use a full two-thirds of the available 5GHz spectrum. This is especially problematic in very high-density, high-throughput deployments where interference is prevalent, which is exactly what I face in the enterprise.

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Re: 5GHz AC Channel Query re: HT80 - UK

[ Edited ]

Just to clarify, I really want to run 80MHz channels to improve throughput. But my density is so high that a single-channel solution is impractical, and - without DFS - I can only avoid overlapping channels by running 40MHz width.

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Re: 5GHz AC Channel Query re: HT80 - UK

I have the same problem.

 

@UBNT-MikeD 

 

you say: "There currently are no plans to add DFS channels for any country with current UAP-AC hardware (AC v1, AC v2, AC-Outdoor)."

 

My queastions are:

 

Are there  only no plans to add the DFS channels?
So we can hope there will be a plan some day?

or there is no chance to add the DFS-channels, because of the current hardware, witch can not do DFS.channels?

So all our hope has no sense?

Please make a plan ! Ubnt Banana

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