What is Mobility settings change message and when Enb will initiate it?plz explain in general terms?

Question

Suppose I have two eNBs, configured as S1 intra-frequency neighbours and my UE is attached to one of them. There is no X2 connection present between them.
Now, I have done admin down to the source eNB. So, HO process is triggered. As a consequence of this, source eNB sends HO required message to MME.

My query is, in this HO required message, what should be the value of ac-BarringFactor??
Should it be P00 or the last value set before admin down(e.g., P95)?

Answer 1

When UE is handedover then it is mandotory to change the handover settings so that user does not immediately comeback to the source cell. And this change is performed in both the cells by the means of Mobility settings change Procedure (Its a X2 procedure).