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

+3 votes
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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
Similar Questions
+2 votes

During attach procedure, UE sends "Attach Request" along with "RRC Connection Setup Complete", eNodeB sends "Attach Accept" along with "RRC Connection Reconfiguration then why UE does not send "Attach Complete" along with "RRC Connection Reconfiguration Complete" message ? What could be the reason for defining the messages so ?

+1 vote

I would like to ask the following:
1.How UE will be effected
2.How Source eNodeB will be effected
3.How about the re-transmission of PDCP(SN), PDCP (NO SN)

Thanks.

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