PaPb changes Impact in DL USER THROUGHPUT

[macro]

https://forum.huawei.com/enterprise/...458849&lang=en

Helpfull topic about papb

[longtermevolution]

Dear friend
We have modified pbpa from 1,-3 to 0,0. Resulting we have observed +45% Throughput gain with 10% data volume increment .

But we didn't change RS power ratherthan we have increased one 20W power license in LTE as there were headroom for RRU to use power.


Kindly support to know the reason for which factor Throughput has increased.

That would be really helpful for me if you help at earliest!




BR//
Miles

With Pb=0 it meant you are no more power boosting.
You kept RS power same i think to keep the coverage intact as before.
GGG.jpg
papb.jpg
Remember these tables you can see by setting PB=0 there is no increment on CRS RE but PDSCH power increase to 5/4 resulting in improvement in throughput.


Cheers!!!

[macro]

in our network, for example, we have b3, 20 W power, and config is RS power 152, Pa -3 Pb 1. If try to change Pa and Pb to 0;0, it makes error RRU power limit exceed, so need to use PaPb calculator from FMA. But if try to make 0;0, i also shoud reduce RS power from 152 to 122, so i lost coverage

[slava121]

Hi!
What's your band, BW?

in our network, for example, we have b3, 20 W power, and config is RS power 152, Pa -3 Pb 1. If try to change Pa and Pb to 0;0, it makes error RRU power limit exceed, so need to use PaPb calculator from FMA. But if try to make 0;0, i also shoud reduce RS power from 152 to 122, so i lost coverage

[macro]

Band 3 FDD 20 mhz

[slava121]

here is the link: https://5g-tools.com/4g-lte-rs-re-power-calculator/
here you can calculate the ReferenceSignalPwr value. your value RS power = 152 is correct, for Ra = -3 Pb = 1.Do you have a description of eRAN16.1 in hedex format?
PA for even power distribution:

Recommended Value	Dual-antenna or four-antenna: DB_3_P_A(-3 dB) Single-antenna: DB0_P_A(0 dB)

Pb:

GUI Value Range	0~3
Enumeration Number/Bit	N/A
Unit	None
Actual Value Range	0~3
Default Value	1
Recommended Value	Single-antenna: 0; double-antenna: 1
Initial Value Setting Source	Default/Recommended Value

[macro]

Thanks, I will look, but according to my expirience in our network it is imposible to increase pa without loosing of rs power, so I havent improvinf of throughput.
Not sure, try to search hdx file

[slava121]

here is the download link for eRAN FDD Feature Documentation eRAN16.1: https://mega.nz/file/kHYwFYwb#Qy1BIN...XxUGwwLqNv5H2U

Thanks, I will look, but according to my expirience in our network it is imposible to increase pa without loosing of rs power, so I havent improvinf of throughput.
Not sure, try to search hdx file