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

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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

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1 Answer

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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
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