Hi, List!
I'm new to OpenBSC, and I'm experimenting some configuration of the program. Now I have to try to change the power of the BaseStation, so that I can set how far mobile phones can catch the signal of my BaseStation.
I thought, I can change the values of "ms max power" or "nominal power", but I don't see any difference.
Is it possible to do what I try? If yes, how?
Thanks for any help!
Hello Luca,
in the config file, set "max_power_red 0' This means the amount to reduce the power is 0 (which means it's the max power). So if you want to attenuate the power, you have to raise the value e.g. 12. By the way, I assume you're using nanobts.
Greetings, Nordin.
On 4-6-2010 11:37, Luca Bertoncello wrote:
Hi, List!
I'm new to OpenBSC, and I'm experimenting some configuration of the program. Now I have to try to change the power of the BaseStation, so that I can set how far mobile phones can catch the signal of my BaseStation.
I thought, I can change the values of "ms max power" or "nominal power", but I don't see any difference.
Is it possible to do what I try? If yes, how?
Thanks for any help!
Am Fri, 04 Jun 2010 12:13:39 +0200 schrieb Nordin bouchtaoui@gmail.com:
in the config file, set "max_power_red 0' This means the amount to reduce the power is 0 (which means it's the max power). So if you want to attenuate the power, you have to raise the value e.g. 12. By the way, I assume you're using nanobts.
Hi, Nordin!
Thanks for your answer.
I read the documentation again, and I have another question. Does the value of max_power_red works together with "nominal power"?
I tried to set "nominal power" to 100 and max_power_red to 0, and then to increase max_power_red. I don't see any difference if I search the net with my phone...
What am I doing wrong?
Thanks
According to OpenBSC wiki: "How many dBm is the nominal power of this BTS. This setting is only used as a base for computing power levels displayed to the user. " So this one is just to calculate the powervalue to be displayed for you, so I assume it does nothing more than that.
But how do you test by the way?
On 4-6-2010 14:42, Luca Bertoncello wrote:
Am Fri, 04 Jun 2010 12:13:39 +0200 schrieb Nordinbouchtaoui@gmail.com:
in the config file, set "max_power_red 0' This means the amount to reduce the power is 0 (which means it's the max power). So if you want to attenuate the power, you have to raise the value e.g. 12. By the way, I assume you're using nanobts.
Hi, Nordin!
Thanks for your answer.
I read the documentation again, and I have another question. Does the value of max_power_red works together with "nominal power"?
I tried to set "nominal power" to 100 and max_power_red to 0, and then to increase max_power_red. I don't see any difference if I search the net with my phone...
What am I doing wrong?
Thanks
Am Fri, 04 Jun 2010 15:03:16 +0200 schrieb Nordin bouchtaoui@gmail.com:
According to OpenBSC wiki: "How many dBm is the nominal power of this BTS. This setting is only used as a base for computing power levels displayed to the user. " So this one is just to calculate the powervalue to be displayed for you, so I assume it does nothing more than that.
But how do you test by the way?
It's difficult to explain, but I just want to restrict (or enlarge) the field in which is my BaseStation to find.
Is it possible?
Thanks
On 4-6-2010 15:10, Luca Bertoncello wrote:
Am Fri, 04 Jun 2010 15:03:16 +0200 schrieb Nordinbouchtaoui@gmail.com:
According to OpenBSC wiki: "How many dBm is the nominal power of this BTS. This setting is only used as a base for computing power levels displayed to the user. " So this one is just to calculate the powervalue to be displayed for you, so I assume it does nothing more than that.
But how do you test by the way?
It's difficult to explain, but I just want to restrict (or enlarge) the field in which is my BaseStation to find.
Is it possible?
Sorry, still don't know what you mean.
Thanks
I believe he wants to limit the range of his bts by decreasing the downlink power.
Regards
Caleb Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: Nordin bouchtaoui@gmail.com Date: Fri, 04 Jun 2010 16:00:36 To: openbsc@lists.gnumonks.org Subject: Re: Setting the power of a BTS
On 4-6-2010 15:10, Luca Bertoncello wrote:
Am Fri, 04 Jun 2010 15:03:16 +0200 schrieb Nordinbouchtaoui@gmail.com:
According to OpenBSC wiki: "How many dBm is the nominal power of this BTS. This setting is only used as a base for computing power levels displayed to the user. " So this one is just to calculate the powervalue to be displayed for you, so I assume it does nothing more than that.
But how do you test by the way?
It's difficult to explain, but I just want to restrict (or enlarge) the field in which is my BaseStation to find.
Is it possible?
Sorry, still don't know what you mean.
Thanks
As far as I understand, he means that he wants to control BTS cover area.
On Jun 4, 2010, at 6:00 PM, Nordin wrote:
On 4-6-2010 15:10, Luca Bertoncello wrote:
Am Fri, 04 Jun 2010 15:03:16 +0200 schrieb Nordinbouchtaoui@gmail.com:
According to OpenBSC wiki: "How many dBm is the nominal power of this BTS. This setting is only used as a base for computing power levels displayed to the user. " So this one is just to calculate the powervalue to be displayed for you, so I assume it does nothing more than that.
But how do you test by the way?
It's difficult to explain, but I just want to restrict (or enlarge) the field in which is my BaseStation to find.
Is it possible?
Sorry, still don't know what you mean.
Thanks
Ok, but to my knowledge the only way to do that is by modifying the "max_power_red" in the config file or through VTY terminal. You should use a dummy load with your BTS, this limits the range within a meter, so you don't get trouble with the government ;-) Or use farada's cage or something...
On 4-6-2010 16:18, Sergey V. Efimoff wrote:
As far as I understand, he means that he wants to control BTS cover area.
On Jun 4, 2010, at 6:00 PM, Nordin wrote:
On 4-6-2010 15:10, Luca Bertoncello wrote:
Am Fri, 04 Jun 2010 15:03:16 +0200 schrieb Nordinbouchtaoui@gmail.com:
According to OpenBSC wiki: "How many dBm is the nominal power of this BTS. This setting is only used as a base for computing power levels displayed to the user. " So this one is just to calculate the powervalue to be displayed for you, so I assume it does nothing more than that.
But how do you test by the way?
It's difficult to explain, but I just want to restrict (or enlarge) the field in which is my BaseStation to find.
Is it possible?
Sorry, still don't know what you mean.
Thanks
The only two ways to control a cells coverage area is to set the subscriber max distance attribute or reduce the BTS / MS TX power.
On 4 Jun 2010, at 15:18, Sergey V. Efimoff wrote:
As far as I understand, he means that he wants to control BTS cover area.
On Jun 4, 2010, at 6:00 PM, Nordin wrote:
On 4-6-2010 15:10, Luca Bertoncello wrote:
Am Fri, 04 Jun 2010 15:03:16 +0200 schrieb Nordinbouchtaoui@gmail.com:
According to OpenBSC wiki: "How many dBm is the nominal power of this BTS. This setting is only used as a base for computing power levels displayed to the user. " So this one is just to calculate the powervalue to be displayed for you, so I assume it does nothing more than that.
But how do you test by the way?
It's difficult to explain, but I just want to restrict (or enlarge) the field in which is my BaseStation to find.
Is it possible?
Sorry, still don't know what you mean.
Thanks
Sorry for the short reply, I'm on my mobile. There are two elements that govern how far your network will work. In a standard deployment of a nanoBTS, this will always be the EIRP of the BTS.
On a macro network it's usually down to the subscribers maximum EIRP (30dBM at GSM 1800). There's various other factors such as receive diversity (both polarity and spatial which I won't discuss here).
The setting you need to change is the max power reduction of each TRX. By setting this to 0, you will be TXing at 23dBm (200mw) on an 1800 nanoBTS.
Best Regards
Stuart Baggs Managing Director BlueWave Communications Ltd
Sent from my iPhone
On 4 Jun 2010, at 14:10, Luca Bertoncello bertoncello@netzing.de wrote:
Am Fri, 04 Jun 2010 15:03:16 +0200 schrieb Nordin bouchtaoui@gmail.com:
According to OpenBSC wiki: "How many dBm is the nominal power of this BTS. This setting is only used as a base for computing power levels displayed to the user. " So this one is just to calculate the powervalue to be displayed for you, so I assume it does nothing more than that.
But how do you test by the way?
It's difficult to explain, but I just want to restrict (or enlarge) the field in which is my BaseStation to find.
Is it possible?
Thanks
Luca Bertoncello Entwicklung Mail: bertoncello@netzing.de
NETZING Solutions AG Tel.: 0351/41381 - 0 Kesselsdorfer Str. 216, 01169 Dresden Fax: 0351/41381 - 12 HRB 18926 / Ust.ID DE211326547 Mail: netzing.ag@netzing.de _______________________________________________________________________
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Caleb Pal -
Luca Bertoncello -
Nordin -
Sergey V. Efimoff -
Stuart Baggs