RF Power restrictions for India

Products Enterprise Wi-Fi Networks
1

Hi,

I was trying to find latest TRAI document on RF power restrictions for Indoor/Outdoor enterprise WIFI, but could not locate any.

The "sh wireless radios channels IN " gives me below output, the power with the 5Ghz seems very low, need to verify the same with some documentation. If this is indeed the case, I guess it’s essential to factor in these restrictions while using the wifi designer.

With XV2-2

Device > sh wireless radios channels IN 
 Interface: radio1 Band=2.4GHz Country:IN
 CHANNEL    FREQUENCY(MHz)  MAX-POWER    EIRP
 1             2412            24        36    
 2             2417            24        36    
 3             2422            24        36    
 4             2427            24        36    
 5             2432            24        36    
 6             2437            24        36    
 7             2442            24        36    
 8             2447            24        36    
 9             2452            24        36    
 10            2457            24        36    
 11            2462            24        36    
 12            2467            24        36    
 13            2472            24        36    
 Interface: radio2 Band=5GHz Country:IN
 CHANNEL    FREQUENCY(MHz)  MAX-POWER    EIRP
 36            5180            17        23    
 40            5200            17        23    
 44            5220            17        23    
 48            5240            17        23    
 52            5260            17        23    
 56            5280            17        23    
 60            5300            17        23    
 64            5320            17        23    
 149           5745            17        23    
 153           5765            17        23    
 157           5785            17        23    
 161           5805            17        23    
 165           5825            17        23

And E410:

Device > sh wireless radios channels IN 
 Interface: radio1 Country:IN
 CHANNEL    MAX-POWER    EIRP   MAX-POWEREXT
 1          24           36     0     
 2          24           36     0     
 3          24           36     0     
 4          24           36     0     
 5          24           36     0     
 6          24           36     0     
 7          24           36     0     
 8          24           36     0     
 9          24           36     0     
 10         24           36     0     
 11         24           36     0     
 12         24           36     0     
 13         24           36     0     
 Interface: radio2 Country:IN
 CHANNEL    MAX-POWER    EIRP   MAX-POWEREXT
 36         18           23     0     
 40         18           23     0     
 44         18           23     0     
 48         18           23     0     
 52         18           23     0     
 56         18           23     0     
 60         18           23     0     
 64         18           23     0     
 149        18           23     0     
 153        18           23     0     
 157        18           23     0     
 161        18           23     0     
 165        18           23     0

Not sure, why the Max-Power varies across APs, but the EIRP is the same as 23, guess that is what TRAI restricts and maybe not the power ?

Documentation across OEMs seems to vary, one such example below:

image
image3168×413 20.6 KB

2

@vbhoj74

Not sure, why the Max-Power varies across APs, but the EIRP is the same as 23, guess that is what TRAI restricts and maybe not the power ?

Thw antenna Gain of XV2-2 is 6 dBi(5Ghz), Omni . Max EIRP = MAX Power of Radio(17 dBm) + Antenna Gain(6dBi) = 23dBm

The antenna Gain of E410 is 5 dBi(5Ghz), Omni. Max EIRP = MAX Power of Radio(18 dBm) + Antenna Gain(5dBi) = 23dBm

1 Like
3

So EIRP of 23 dBm is what the max power allowed in India for 5 Ghz ? Because the AP datasheet says 31dBm for XV2-2.

I would really appreciate if we can have some TRAI document which restricts this to 23 dBm.

I could find a very old doc here. Do not know if this is the prevalent on. If I understand the document correctly, the max EIRP seems to be 27 Vs 23 what Cambium is currently giving.

Interface: radio2 Band=5GHz Country:IN
 CHANNEL    FREQUENCY(MHz)  MAX-POWER    EIRP	TRAI MAX EIRP
 36            5180            17        23 	(27) UNII-1   
 40            5200            17        23 	(27) UNII-1
 44            5220            17        23 	(27) UNII-1
 48            5240            17        23 	(27) UNII-1
 52            5260            17        23 	(27) UNII-2a   
 56            5280            17        23 	(27) UNII-2a    
 60            5300            17        23 	(27) UNII-2a
 64            5320            17        23 	(27) UNII-2a
 149           5745            17        23 	(27) UNII-3
 153           5765            17        23 	(27) UNII-3
 157           5785            17        23 	(27) UNII-3
 161           5805            17        23 	(27) UNII-3
 165           5825            17        23 	(27) UNII-3
----------------

If this is true, I would request correct EIRP levels to be updated on the APs so that we can use the full potential of the power levels allowed.

4

@vbhoj74

Please check your configuration w.r.t placement on the device.

Run CLI command “show config” and search for parameter “placement”. See if its configured to “Indoor” or “Outdoor”.

Above values are true for “Indoor”.

5

Right, tested & got the hint on how to increase the power. :innocent: Hope the internal working (advance roaming, Auto RF, etc) has nothing to do with indoor/outdoor settings.

I would really appreciate if someone can post the latest TRAI document on power levels for indoor & outdoor WLANs.