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What will happen when RRC connection Reconfiguration failure happens during initial attach?

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What will happen when RRC connection Reconfiguration failure happens during initial attach?
posted Aug 4, 2015 by Gnanendra Reddy

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1 Answer

+1 vote

E-UTRAN before sending the RRC Connection Reconfiguration message to the UE, activates access stratum security.

There are following two pre-conditions which should be fulfilled before initiating the re-establishment procedure.
1. UE should be in RRC-CONNECTED mode. UE RRC layer state moves from IDLE to CONNECTED soon after completing the RRC connection setup procedure
2. Access Stratum (AS ) security should be activated. It will be done even before sending the RRC connection reconfiguration (carrying SRB2 and DRBs configuration) message from the eNodeB.

Gnanendra, the scenario you mentioned is fulfilling these two properties. As result, RRC Re-establishment Procedure will be initiated by UE.

answer Aug 5, 2015 by Vimal Kumar Mishra
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