2G to LTE reselection failure

It is observed in our network that LTE(2100) switches to 2G(900) especially where the LTE coverage(RSRP) is low.
Can anyone please explain why this happens and how to resolve this?

Hello All.

As per my understanding GSM to LTE handover is not possible, only reselection is possible.

But whether reselection to LTE is possible in packet connected mode in 2G?

Can anyone clarify this?

Reselection happen only in IDLE mode.

Ok. So what is the strategy to move UE to LTE in packet connected mode from 2G?

It’s Handover.

But in Nokia I think it’s an advanced feature, not basic.

Do you the name of the Feature?

NW controlled cell reselection.

Also NW assisted cell change works in tandem.