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LTE: What does mean by horizontal and vertical keys generation ?

+7 votes
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LTE: What does mean by horizontal and vertical keys generation ?
posted Feb 1, 2014 by Neeraj Mishra

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+5 votes

In case of horizontal handover UE is moved from one cell to another cell But with in the same ENB.
So in this case how the security is activated and how key derived ?

+2 votes

I know during the attach procedure, MME may get one authentication vector or more than one authentication vector.
Now question arises, what is the use of keeping multiple authentication vectors at MME ?

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