Hello Experts.
How a phone preferentially decode SIB1 of SA instead of 4G/5G NSA?
SIB1 of 4G can be read also.
It is because if SIB1 for 5G SA cell is given higher, only in this case SA is to prioritized.
Am I wrong?
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I guess this because of SIM provisioning not releated with RAN settings.
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Not in this case.
2 phones have same SIM profile.
One goes to SA other goes to NSA when NR/LTE mode is set.
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In the phone settings it will be mentioned which one to access on priority.
LTE only, NR only, 3G only, NR+ LTE - first NR then NSA then LTE.
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Most of the phones have no separation for 5G SA /NSA, only preferred tech is there.
NR/LTE does not guarantee that phone will measure SA first.
Thiis is the question, if it is phone or cellreselec priority dependent.
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When you have both NR / LTE and usually UE implementation kicks on.
Most of the UE search for NR first and camp NR and if NR is not available then only it will search for LTE.
If both are available and if LTE signal is strong, NR will be given priority.
This is UE implementation and all the vendors follow this order.
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Is it a typo or I miss some thing?
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Also not clear to me…
Can you please elaborate a little bit?
Signal strength part is correct but the rest is a bit gross…
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Ok
Base station has both 4G and 5G.
And UE is configured with NR + LTE.
UE reads 4G signal and 5G signal and find 4G signal is stronger.
But UE will not camp to 4G even though it is strong.
It reads 5G signal and camps.
Only if 5G signal is having issue or not available then only UE camps to 4G.
It is all vendor UE implementation.
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Where or what parameter allows the UE to choose 5G?
We should drill down this topic from all aspects.
Good question: camp on and reselection - different things.
But first tech to camp on is depends on UE setting.