Hello Experts,
What is the default/recommended value for B1-threshold NR in Nokia 5G NSA?
I see crazy value in a 5G Nokia network like 16 (correspoding to -140 dBm) that triggers plenty of RLF and SCG addition failures.
What about A2?
Is it -140?
Very strange B1 value.
Usually it is between -112 to -118 considering poor UL (No Beamforming, less power in NSA…).
Could you please specify band detail?
Is it lower or Mid?
Recommended is -113.
Strange.
Even -113 dBm is wrong for n78.
According to drive test data, as soon as the SSB RSRP is lower than -98 dBm the UE PUCCH power reaches 20 dBm and there are plenty of RLF (due to maxtxretransmission reached) and SCG failure addition.
Please see graph:
ssb power ( ss-PBCH-BlockPower) is 14
We have N71 and having -116 in NRDCDPR relation.
Also plenty of RACH 5G failure.
Any reason why PUCCH power is restricted to 20 dBm only?
Because if we keep -98 as B1 threshold, then NR serving area will shrink to near to the site only even with beam forming.
Forget about indoor cases.
Not for N78 but for 850 MHz. Sub6.
Phone was a Xiaomi mi mix 3 5g.
Will check UE power class.
Almost all the todays smartphone are power class 3, with max UE TX power 23 dBm.
New devices are expected to come now of power class 2 with max 26 dBm power.
If your device is class 3, network must have restricted UE MAX TX power by configuring 20 dBm max value.
PUSCH is also capped at 20 dBm all over the drivetest.
Yes. In NSA you can not go beyond 20 dBm unless UE support TDM or Dynamic power.
Anyway link budget looks really bad and limited for n78.
I am sure there are tilting problems and UE was served by side lobes.
In the whole drivetest there’s not a single RSRP value higher than -80 dBm.
This is impossible with proper tilts and proper planning
Why this limitation?
Is it UE limit or network imposed limit?
Is your drive area open?
In dense urban its difficult to get higher than -90 dBm.
In n78 with line of sight there should have been higher RSRP values.
Max power =23 dBm.
So NR set Max 20 dBm and LTE set 20 dBm.
If UE support dynamic power sharing, UE can have higher power in any of LTE or NR by maintaining total 23 dBm power.
Is this DSS case?
Or in normal EN-DC also power sharing is dynamic?
Normal EN-DC case.
Log is also normal EN-DC NSA, not DSS.
No MBSFN IE in the log.