Relationship between Layer and Rank in LTE/5G

Hi All,

Quick question: Is there any relationship between layer and rank in LTE/5G?

Rank is reported by UE as per number of layers configured.

Thank you.
And is this configuration changeable based on channel conditions reported by UE?

Yes correct.
As per radio conditions i.e. SINR in DL UE decide to use rank.
Other option is data in buffer to be transmitted if ue having 4 rx but data download can be fulfilled by 2 rx, then UE will report rank 2 instead of rank 4.

Thanks for the update