When eNB has multiple cells, how the cell ids are mapped to eNB ID?

Question

In LTE, number of cells in is caped to 32 in MeasObject->CellAddModList.
My ENB is has detected the more that 32 neighbor cells through ANR and there CIO is changes regularly as part of MRO feature.

So if CIO of all neighbor cells changes regularly how do i inform UEs about the latest CIO. Does UE stored the last CIO provided in its database even after a cell is removed from CellAddModLIst?

Please provide your inputs.

Thanks,
Pradeep

Answer 1

Cell identity is 28 bits long string. Twenty left most bits are used to represent eNodeB Id.