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In LTE network when UE initiates re-establishment procedure?

+4 votes
In LTE network when UE initiates re-establishment procedure?
posted Oct 7, 2014 by anonymous

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1 Answer

+3 votes

UE initiates re-establishment procedure in following case:

1.)When it detects RLF.
2.)Upon Handover failure.
3.)Upon MobilityFromEutra failure.
4.)Upon Integrity check failure indication from layers.
5.)Upon RRC Reconfiguration failure.

answer Oct 7, 2014 by Aarti Jain
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RRC Connection Request message carries "Initial UE identity" which is just 5 bytes long identifier. Why does so many information elements send within the "Re-establish UE-Identity" like C-RNTI, physcellId etc ?

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Reestablishment will be initiated only after AS security then how integrity will be failed and how it initiates reestablishment?

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