top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

LTE: Why the same Kenb can't be used for handover from one eNodeB to another another ?

+2 votes
468 views

What is the reasoning behind to use different security keys after moving from one eNodeB to another eNodeB (Handover) ?

posted Jan 16, 2016 by Vikram Singh

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

As per 33.401-7.2.8 Key handling in handover

On handover the kenb need to be used in target eNB is derived from initial kenb. Drived kenb also has PCI and DL earfcn of the target eNB as input so same keys can not be used in the target eNB.

answer Jan 21, 2016 by Veer Pal Singh Yadav
Similar Questions
+2 votes
LTE: How source eNodeB get to know when it has to trigger handover required message towards MME ?

I have basic handover related query. How source eNodeB get to know when it has to trigger handover required message ? I mean to ask, how a source eNodeB come to know the threshold values of RSRP or RSRQ or both (related to target eNodeB) , required to do a successful handover towards eNodeB ? Is it due to network planning ?

+2 votes
LTE: How does a target enodeB get to know which of the cell need to prepare for a received handover request ?

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 ?

...