Relationship between Layer and Rank in LTE/5G

RAN
1

Hi All,

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

2

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

3

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

4

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.

5

Thanks for the update