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Occasional Contributor I

Maximum transmit power and the Receiver sensitivity AP-535

Hi,

  1. At 2.4 GHz band, does the 530 Series Access point operate only in the 20 MHz Bandwidth or it can operate at 40 MHz as well. Please confirm.
  2. For performing the Coverage Study we require the Maximum transmit power and the Receiver sensitivity.

In the datasheet of the Access point AP-535 (JZ336A), the values of Maximum Transmit Power and the Receiver Sensitivity are provided as indicated below:

2.4GHz, 802.11ax HE20
MCS Max. Tx. Power Receiver Sensitivity
MCS0 18 -92
MCS11 14 -62

Can you please share the Maximum Transmit Power and the Receiver Sensitivity values for MCS 6, MCS 7, MCS 8 and MCS 9

 

Looking forward to the response.

 


Accepted Solutions
Highlighted
Aruba Employee

Re: Maximum transmit power and the Receiver sensitivity AP-535

Hi,

 

Regarding point 1, in practice you don't want to use 40MHz on 2.4GHz band as there isn't enough channels. This is accurately described here in a visual manner https://support.metageek.com/hc/en-us/articles/204490510-40-MHz-Channels

Yes, it is supported on the AP but you should almost never use it!

 

Regarding point 2, the datasheet lists the lowest & highest MCS index for each combination. These are usually enough to help you do the coverage plan and understand your data rate distribution.

 

The lowest MCS index will show you how far can the client connect (client will have the lowest data rate as its signal will be low and the SNR will be low and thus you will be using a less performing modulation scheme).The AP will be transmitting at the highest possible transmit power depending on your regulatory requirements.

 

The higher MCS index will show you the best possible connection that the client can get. This will require the client to be very close to the AP and have a high SNR.The AP doesn't need to transmit at high power in this case.

 

As such, you now know your closest and farthest point and the other rates can be achieved in between. Needless to say, the client device needs to be able to support this MCS combination.

View solution in original post


All Replies
Highlighted
Aruba Employee

Re: Maximum transmit power and the Receiver sensitivity AP-535

Hi,

 

Regarding point 1, in practice you don't want to use 40MHz on 2.4GHz band as there isn't enough channels. This is accurately described here in a visual manner https://support.metageek.com/hc/en-us/articles/204490510-40-MHz-Channels

Yes, it is supported on the AP but you should almost never use it!

 

Regarding point 2, the datasheet lists the lowest & highest MCS index for each combination. These are usually enough to help you do the coverage plan and understand your data rate distribution.

 

The lowest MCS index will show you how far can the client connect (client will have the lowest data rate as its signal will be low and the SNR will be low and thus you will be using a less performing modulation scheme).The AP will be transmitting at the highest possible transmit power depending on your regulatory requirements.

 

The higher MCS index will show you the best possible connection that the client can get. This will require the client to be very close to the AP and have a high SNR.The AP doesn't need to transmit at high power in this case.

 

As such, you now know your closest and farthest point and the other rates can be achieved in between. Needless to say, the client device needs to be able to support this MCS combination.

View solution in original post

Highlighted
Occasional Contributor I

Re: Maximum transmit power and the Receiver sensitivity AP-535

Thank you Ayman for your response!

In addition, 

for the Antenna Patterns there is confusion for the ‘Vertical (elevation) planes (side view, AP facing down)’ as seen below:

 

Brian81292jbm_0-1595405332178.jpeg

Please share as to which Pattern is for the 2.4 GHz and the 5 GHz, since the Pattern Title and the Legend for those patterns are reversed.

Highlighted
Aruba

Re: Maximum transmit power and the Receiver sensitivity AP-535

The plots, legends and titles right below the plots are correct, but the section titles are reversed. Will get that fixed.

/Onno
Highlighted
Occasional Contributor I

Re: Maximum transmit power and the Receiver sensitivity AP-535

Hi Onno,

 

Will it be possible for you to share the revised datasheet for AP-535 with the above correction?

 

Regards,

Brian

Highlighted
Aruba

Re: Maximum transmit power and the Receiver sensitivity AP-535

It's in the pipeline to be updated, but our marcom folks combine multiple collateral changes. Let me find out when we expect to have the updated version available.

/Onno
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