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wispwest
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Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Sun Jul 06, 2014 7:15 am

Whenever I select one of the odd ones aside from eC or Ce, it says its not supported. What are they, wider channels? Exentions for use only with 802.11ac cards???? Anyone know?
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Last edited by wispwest on Sun Jul 06, 2014 8:44 pm, edited 1 time in total.
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Sun Jul 06, 2014 8:05 am

Yes
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Sun Jul 06, 2014 9:18 am

C is 20MHz contol channel. In 11n you have Ce and eC with 40MHz. In .ac channels can be wider.
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Sun Jul 06, 2014 9:23 am

Could someone please post the descriptions of each one of these. I can't find a cheat sheet.

Also if someone could reveal a mini-pci car for 802.11ac that will work with routerboard it'd be appreciated.
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Sun Jul 06, 2014 11:26 am

As far as I know there is no 802.11ac product for RouterBoards. The "eeeC", etc. channels are simply support in RouterOS for future 802.11ac products.
In 802.11n mode:

eC = 20/40MHz-ht-below
Ce = 20/40MHz-ht-above

You can see why they needed to rename the values otherwise they'd look a bit like this:

20/40/80MHz-ht-some-above-and-some-below!!
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Tue Jul 08, 2014 8:48 am

That makes sense. The AP rolls back to 20MHz for compatibility, right?
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Tue Jul 08, 2014 9:10 am

That makes sense. The AP rolls back to 20MHz for compatibility, right?
Yes. To the "C"-Channel.
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Thu Oct 02, 2014 8:50 am

What about (Ce | Ceee | eC | eCee | eeCe | eeeC ) ???

eC mean Extend Channel below : 20Mhz?
eCee mean Extend Extend Channel below : 40Mhz?
eeCe mean Extend Channel below : 80Mhz?
eeeC mean Extend Channel below : 160Mhz?

or how?

and why Ce and Ceee but there is no Cee ?
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Thu Oct 02, 2014 9:21 am

C- is center of frequency
e - is extension channel


example : frequency is 5100 and in eCee will be see (5080-e,5100-C,5120-e,5140-e)
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Mon Apr 20, 2015 6:34 am

i have as of now good speeds on the new SXTac using NSTREME...

shifting to NV2 is really bothersome...
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Tue May 23, 2017 12:53 am

thank you mishaM , very good explication.
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Tue May 23, 2017 3:21 pm

What about (Ce | Ceee | eC | eCee | eeCe | eeeC ) ???

eC mean Extend Channel below : 20Mhz?
eCee mean Extend Extend Channel below : 40Mhz?
eeCe mean Extend Channel below : 80Mhz?
eeeC mean Extend Channel below : 160Mhz?

or how?

and why Ce and Ceee but there is no Cee ?
Each letter denotes a 20MHz channel section.

C: is where the Channel's main frequency is set
e: is where the rest of the spectrum "sub-channel" is distributed

There is no "Cee" because that would equal 3x20MHz combined channels to make a 60Mhz channel, Mikrotik currently only has 20/40/80 channel width available for AC.

If the antenna is has 2 spatial streams (dual-chain) then you will see 2x 80Mhz, not 2x160Mhz, equaling the equivalent of 866Mbps link speed. Single chain (1 spatial stream) = 433Mpbs link speed.

Hope this helps!
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Fri Feb 17, 2023 7:16 pm

This is helpful. What is "XXXX"?

G
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Fri Feb 17, 2023 8:24 pm

Note - Below , the bolded 20 is the frequency the radio is set to.

Normal 20 MHz wide is C

C = 20 MHz wide
( Total is 20 MHz wide --- 20 )

Ce ;
C = the center 20-MHz wide frequency the radio is set to
e = an additional 20-MHz wide frequency that starts above where C stops.
( Total is 40 MHz wide --- 20 + 20 )

Ceee ;
C = the center 20-MHz wide frequency the radio is set to
e = an additional 20-MHz wide frequency that starts above where C stops
e = an additional 20-MHz wide frequency that starts above where e above stops
e = an additional 20-MHz wide frequency that starts above where e above stops
( Total is 80 MHz wide -- 20 + 20 + 20 + 20 )


eC ;
e = an additional 20-MHz wide frequency that starts lower than where C begins.
C = the center 20-MHz wide frequency the radio is set to
( Total is 40 MHz wide -- 20 + 20 )

eeeC ;
e = an additional 20-MHz wide frequency that starts lower than where e below begins.
e = an additional 20-MHz wide frequency that starts lower than where e below begins.
e = an additional 20-MHz wide frequency that starts lower than where C begins.
C = the center 20-MHz wide frequency the radio is set to
( Total is 80 MHz wide -- 20 + 20 + 20 + 20 )

eCee ;
e = an additional 20-MHz wide frequency that starts lower than where C begins.
C = the center 20-MHz wide frequency the radio is set to
e = an additional 20-MHz wide frequency that starts above where C stops
e = an additional 20-MHz wide frequency that starts above where e above stops
( Total is 80 MHz wide -- 20 + 20 + 20 + 20 )

Info
If we have a 20 MHz wide channel setting at a frequency of 5500 ,
The frequency use begins at ( 5500 - 10 ) = 5490
The frequency use ends at ( 5500 + 10 ) = 5510

If we have a Ce (40 MHz wide) channel setting at a frequency of 5500 ,
The C frequency use begins at ( 5500 - 10 ) = 5490
The C frequency use ends at ( 5500 + 10 ) = 5510
The e frequency use begins at ( 5500 + 10 ) = 5510
The e frequency use ends at ( 5500 + 10 + 20) = 5530

North Idaho Tom Jones
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Fri Feb 17, 2023 8:52 pm

Of special note:

If you have a eCee configured AP

A eC client should get an eC connection

A Ce client should get a Ce connection

A Ceee client should get a Cee connection

A eeeC client should get a eC connection

A normal C ( 20-MHz ) client should get a ( 20-MHz ) C connection


If I am correct - A XXXX client will auto connect and get the widest possible connection.

A XXXX client connected to a normal 20-MHz C AP should get a 20 MHz wide connection

A XXXX client connected to a Ce or eC AP should get a 40 MHz wide connection

A XXXX client connected to a Ceee or eCee or eeCe or eeeC ap should get a 80 MHz wide connection.


Note - the above connection channel widths are based on good/clean/clear frequencies.
If you have a XXXX client or a Ceee clinet -and- a Ceee AP , but the e frequencies busy and congested , you may only get and maintain 20 MHz wide connection.
If the center band C frequency is busy and congested , then no clients might be able to connected ( C busy and all e frequencies quiet ).

So , when you configure a Ce, Ceee, eC or eeeC AP , the C frequency range on your AP is the most important clean frequency to get client connection.
 
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Re: Wireless-fp "Ce, Ceee, eC, eCee, eeCe, and eeeC"

Fri Feb 17, 2023 10:05 pm

Excellent info. I understand all of this. Thanks for the response.

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