UL Tx switching in ENDC or SUL to improve 5G sub 6 UL performance

Hi Experts.

Have anyone tried UL Tx switching in ENDC or SUL to improve 5G sub 6 UL performance?

Saw this in an ZTE article:

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Interesting feature!

How does it work?

What is criteria for UL Tx?

Please go through this: 5G uplink enhancement technology by ZTE - White Paper

But in short, It basically was introduced to improve the poor UL performance of above 3Ghz 5G UL cov limitations.

Only take into account this is from R16, not many UE.