The document summarizes the steps involved in establishing a radio connection between a UE and core network. It involves the UE sending a connection request, followed by setup of the radio link over Iub. Authentication and security procedures are then performed along with radio bearer and physical channel reconfiguration to complete the connection.

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3. Squal= Qqualmeas–QqualMin =QqualMinis –20 dB CPICH Ec/Io
Srxlev= Qrxlevmeas–QrxlevMin–Pcompensation =115 dBm CPICH RSCP
UE:RRC Connection Request
NBAP: Radio Link Setup Request
ALCAP: Establish Request
MGWNote: The figure is now
FP: DCH Synchronisation over Iub
simplified by excluding
RRC Connection Setup
• the radio link setup
Authentication----Iu-cs • AAL2 resource assignment
INITIAL_DIRECT_TRANSFER • L1 synchronisation
Security Mode Command
Identity Request
Setup
Call Proceeding
Facility
RAB Assignment Request _ Radio Link Reconfigure Prepare-NOB_AMR + SRB
Radio Bearer Setup
Alerting
Connect-----------------------------Call Established
RADIO_BEARER_RECONFIGURATION
PHYSICAL_CHANNEL_RECONFIGURATION