Hello Experts.
I have to reduce the RS power for Ericsson cell to increase PDSCH.
I used to work on Huawei where I could change Pa, Pb and RS together to keep the total power under 40W.
If I use the calculator for the above settings to check for the total power, it shows me 72.7W.
I am keeping CrsGain as Pa and PDSCHtypeB as Pb and calculated RS using an online tool, i.e. 16.4 dBm.
Have you tried this calculator?
crsGain is -Pa
So to make PDSCH bigger than refference you have to do crsGain = 1, cause Pa = -1 makes this, right?
Yes, I calculated RS through this tool.
No. I have a 40W radio.
I mean in terms of RS being lower than PDSCH.
Yes, correct.
PA should be positive, so crsGain has to be negative.
But I also don’t wanna exceed the total power which is 40W.
So crsgain = 1 and pb = 0.
Use -100, TypeB PDSCH will be caulculated automatically as far as I remember in Ericsson system.
Yes, try it and tell us how it went.
I am using an excel based calculator to calculate the possible configuration.
But using CRSgain = 1 and Pb = 0, gives me a total power of 48.9 W which is more than my RRU.
No, no.
It’s like this:
RS Power = (10LOG((configuredMaxTxPower / 1000 / noOfTxAntennas) * 1000,10)) - (LOG(PRB12)) + (crsGain / 100)
ConfiguredMaxTxPower will not change when you configure crsGain.
It’s not like in Huawei system.
Oh I see.
So the RS power is changed only by changing these two parameters CRSgain and typeB.
TypeB I remember you can’t change.
At the end of this thread theres a PDF with different vendor configuration In Ericsson where can I find the pb and Reference Signal Power parameters? - #10 by Thananan_Numatti
