TM mode change between TM3 and TM4 in one cell?

RAN
1

Hello,
Anyone see TM mode change between TM3 and TM4 in one cell?
I just see change between TM2-TM3 or TM2-TM4.

2

Yes, either we can configure TM3 or TM4.
And TM2 act as a fallback to them.
For Tx diversity.

3

It’s possible as OC adaptive can be made but not recommended.

4

Can not adaptive change between TM3 (open loop) with TM4 (close loop) in 1 cell?
TM7, 8, 9 is close or open loop?

5

Yes it’s correct from tm4 to tm3 not seen

These are beamforming concept.

6

I think so, not MIMO concept.

7

It’s MIMO only but category is different and PDCCH DCI format as well different for it.

8

I hear that when OC adaptive is used, TM4 is 98% while TM3 just ~ 2%.