LTE: How does a target enodeB get to know which of the cell need to prepare for a received handover request ?

Question

When source enodeB triggers Handover Required message to MME. It just has Target ID ( which just tells about the target eNodeB Id ) not at the cell level granularity . My concern is how target eNodeB figure out which of the cell out of 256 cells, need to be prepared for the received handover request message. Is there any IE carry such information within Handover Required or handover request message ?

Answer 1

In Handover preparation message you can look for the source to target transparent container which includes target Cell ID information