Possible to control the radio strength of a nanoBTS?

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Roch roch at on-waves.com
Wed Jun 3 17:28:19 UTC 2009


Hi,

I tried it a few weeks ago, you don't need to do anything to have the 
ip.access BTS transmit.
You don't actually control the output power of the BTS but the 
attenuation of the signal (from 0 to 12 2dB step).

Regards

Roch.

Nordin wrote:
> Thanks for your response Harald,
> 
> Well I read in the mailinglist with the title: BS-11 runs, but no 
> Network on my Mobile, date: Thu Apr 2 18:03:24 CEST 2009
> about modifying the TRX power for the BS-11, so I could try that too for 
> the ip.acces?
> 
> Isn't it a bad idea to add abis_nm_bs11_set_trx_power(&bts->trx[0], 
> BS11_TRX_POWER_GSM_250mW); in the bootstrap sequence? It won't harm if 
> one tries right?
> 
> 
> 
> Harald Welte schreef:
>> On Thu, May 28, 2009 at 12:36:49PM +0200, Nordin wrote:
>>  
>>> Hello guys,
>>>
>>> While I'm still busy with understanding the OpenBSC sourcecodes and 
>>> GSM  protocols, I wonder if it's possible to control the nanoBTS's  
>>> transmissionpower. If some additional code is needed, I'd like to 
>>> give a  try with some hints or directions to look at.
>>>     
>>
>> Unfortunately we don't know this, as we don't have the ip.access protocol
>> documentation.  As far as I know, there is no standard command for 
>> altering
>> power levels.
>>
>> You might be able to control the _initial_ BS power by setting some
>> TRX or BTS attributes related to that.  But it is my understanding 
>> that after the
>> initial power level, the BS will adjust the power itself on every 
>> dedicated
>> channel.
>>
>>   
> 
> 

-- 
Roch-Alexandre Nominé
CTO
On-Waves ehf
Armuli 25, IS-108, Reykjavik, Iceland
Tel: +354 864 9431




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