Beam Management, Beam Switching and Beam Refinement in 5G NR

Yes that’s agree my understanding it’s only for FR1.

No idea, I’m still not in clear with this idea: first UE is scheduled on SSB and later on beam refinement it is scheduledon CSI-RS.
I still need to see some evidece about this.

We need to conclude topic may be other 5g experts in group can give there views
Now open new query for FR2 do we have refined beam?

Hold on, there’s no evidence that you have beam refinement in FR1 too.
Based on which message you know that beam refinement is activated?

I’m saying it can be possible for FR1 as switch there to enable /disable refined beam.
1 ssb beam = 4 refined beam for FR1.

I have never seen CSI-RSRP for FR1 till now.
I didn’t dig into the technicals of why it is so.

So have you not seen MAC LL1 reports with CSI-RS in FR1?

Yes, haven’t seen (CSI-RSRP) till date.

Just one question to understand which report it is used for beam change: is it NR 5G MAC BRS report or is it MAC LL1 CSF indicator?

Mac LL1 csf indicator.

Here’s an example of MAC LL1 CSF indicator.
How do you know which report id it is used for beam switching?

2 ssc seen here 120 and 15 khz in single report is it like FR1 and FR2 together on site.
I’m seeing cri rsrp mapped with 15 KHz.

Idea is to distinguish which report among those 4 is really used for beam switching.
This log is FR2.

What is the 15khz scs mean here?
120 Khz is the FR2 suitable scs and I have seen only that in my CSF info.

I have the snapshot from a friend.
Don’t know what exactly means each.
Could be a tool issue.

Which beam switching SS Beam or CSI-RS beam?

This is what I am trying to find out from MAC LL1 CSF indicator report. :slight_smile:

The gNB algorith will decide either based on vendor config, right?

How to know which report is used for beam switching?
Because in the snapshot sent there are both CSI_RS report and SSB reports.

So it may depend on what needs to be switched.
These Channel state CSF infos gives the channel quality periodically as seen, so if it measurements suggest to switch CSI beam/SS beam.
Then gNB will use the configured reporting quantities for switching as far as I guess.
Some one from Vendor can confirm what it takes from Reporting quantity for each case…