• UMTS Call Flow - CS

UE RNCNodeB MGW/CNRRC: RRC Connection Request (RACH)

NBAP: Radio Link Setup Request

NBAP: Radio Link Setup Response

ALCAP: ERQ (Establish Request)

ALCAP: ECF (Establish Confirm)

RRC: RRC Connection Setup (FACH) [RRCconnRepTimer1/2(100ms,1s)]

L1 Synchronization

NBAP: Synchronization Indication

RRC: RRC Connection Setup Complete (DCH)

RRC: Initial Direct Transfer (MM: CM Service Request)SCCP: CR (Connection Request)

RANAP: Initial UE Message (MM: CM Service Request)

SCCP: CC (Connection Confirm)

RANAP: Direct Transfer (MM: Authentication Request)

RRC: Downlink Direct Transfer (MM: Authentication Request)

RRC: Uplink Direct Transfer (MM: Authentication Response)

RANAP: Direct Transfer (MM: Authentication Response)

RANAP: Common ID

RANAP: Security Mode Command

RRC: Security Mode Command

FP: Downlink Synch

FP: Uplink Synch

RRC Connection Establishment – CELL DCH State

RNC checks if resources are available: BTS, AC, Transmission.If not it sends RRC Connection Reject

T300=2s ; N300=3

L1 Synchronization

T312=6s ; N312=4

MOC CS Message Flow

UE RNCNodeB MGW/CNRRC: Security Mode Complete

RANAP: Security Mode CompleteRRC: Uplink Direct Transfer (CC: Setup)

RANAP: Direct Transfer (CC: Setup)

RANAP: Direct Transfer (CC: Call Proceeding)RRC: Downlink Direct Transfer (CC: Call Proceeding)

RANAP: RAB Assignment Request

NBAP: Radio Link Reconfiguration Prepare

NBAP: Radio Link Reconfiguration Ready

ALCAP: ERQ (Establish Request)

ALCAP: ECF (Establish Confirm)

NBAP: Radio Link Reconfiguration Commit)

RRC: Radio Bearer Setup

RRC: Radio Bearer Setup Complete

RANAP: RAB Assignment Response

ALCAP: ERQ (Establish Request)

ALCAP: ECF (Establish Confirm)

RAB Establishment

FP: Downlink Synch

FP: Uplink Synch

RL modification procedure:SRB+DCH, HW resources checked

Possible failure in AAL2 setup (Iub, Iur and Iu)

Soft handover is not allowed during the RAB establishment procedure (The mobile can not add or remove cells in AS) this makes the UE and Node B particularly sensitive to mobility and dominance Timer wf_rb_setup_cpl (6s) is started when the RRC: Radio Bearer Setup message is sent to the UE In case the timer expires Iu Release Request is sent to the CN with release cause (radio_conn_lost)

< 1s

Call Established

UE RNCNodeB

RANAP: Direct Transfer (CC: Connect)RRC: Downlink Direct Transfer (CC: Connect)

RRC: Uplink Direct Transfer (CC: Connect Acknowledge)

RANAP: Direct Transfer (CC: Connect Acknowledge)

RRC: Uplink Direct Transfer (CC: Release Complete)

RANAP: Direct Transfer (CC: Release Complete)

RANAP: Iu Release Command

RRC: Uplink Direct Transfer (CC: Disconnect)

RANAP: Direct Transfer (CC: Disconnect)

RANAP: Direct Transfer (CC: Release)

RRC: Downlink Direct Transfer (CC: Release)

RANAP: Iu Release Complete

MGW/CN

RANAP: Location ReportRRC: Measurement Control

Call Disconnect

RRC: Downlink Direct Transfer (CC: RRC Connection Release)

RRC: Uplink Direct Transfer (CC: Release Complete)

RRC: Uplink Direct Transfer (CC: Release Complete)

NBAP: Radio Link Deletion Request

NBAP: Radio Link Deletion Response

ALCAP: ERQ (Establish Request)

ALCAP: ECF (Establish Confirm)

RANAP: Direct Transfer (CC: Alerting)RRC: Downlink Direct Transfer (CC: Alerting)

UE RNCNodeB MGW/CN

RRC: RRC Connection Request (RACH)

NBAP: Radio Link Setup Request

NBAP: Radio Link Setup Response

ALCAP: ERQ (Establish Request)

ALCAP: ECF (Establish Confirm)

RRC: RRC Connection Setup (FACH)

L1 Synchronization

NBAP: Synchronization Indication

RRC: RRC Connection Setup Complete (DCH)

RRC: Initial Direct Transfer (MM: Paging Response)SCCP: CR (Connection Request)

RANAP: Initial UE Message (MM: Paging Response)

SCCP: CC (Connection Confirm)

RANAP: Direct Transfer (MM: Authentication Request)

RRC: Downlink Direct Transfer (MM: Authentication Request)

RRC: Uplink Direct Transfer (MM: Authentication Response)

RANAP: Direct Transfer (MM: Authentication Response)

RANAP: Common ID

RANAP: Security Mode CommandRRC: Security Mode Command

FP: Downlink Synch

FP: Uplink Synch

RRC Connection Establishment – CELL DCH State

L1 Synchronization

MTC CS Message FlowRANAP: Paging

RRC: Paging Type 1

UE RNCNodeB MGW/CNRRC: Security Mode Complete

RANAP: Security Mode Complete

RRC: Uplink Direct Transfer (CC: Setup) RANAP: Direct Transfer (CC: Setup)

RANAP: Direct Transfer (CC: Call Confirmed)RRC: Downlink Direct Transfer (CC: Call Confirmed)

RANAP: RAB Assignment Request

NBAP: Radio Link Reconfiguration Prepare

NBAP: Radio Link Reconfiguration Ready

ALCAP: ERQ (Establish Request)

ALCAP: ECF (Establish Confirm)

NBAP: Radio Link Reconfiguration Commit)

RRC: Radio Bearer Setup

RRC: Radio Bearer Setup Complete

RANAP: RAB Assignment Response

ALCAP: ERQ (Establish Request)

ALCAP: ECF (Establish Confirm)

RAB Establishment

FP: Downlink Synch

FP: Uplink Synch

RL modification procedure:SRB+DCH, HW resources checked

Possible failure in AAL2 setup (Iub, Iur and Iu)

Soft handover is not allowed during the RAB establishment procedure (The mobile can not add or remove cells in AS) this makes the UE and Node B particularly sensitive to mobility and dominance Timer wf_rb_setup_cpl (6s) is started when the RRC: Radio Bearer Setup message is sent to the UE In case the timer expires Iu Release Request is sent to the CN with release cause (radio_conn_lost)

Call Established

UE RNCNodeB

RANAP: Direct Transfer (CC: Connect)RRC: Downlink Direct Transfer (CC: Connect)

RRC: Uplink Direct Transfer (CC: Connect Acknowledge)

RANAP: Direct Transfer (CC: Connect Acknowledge)

MGW/CN

RANAP: Location ReportRRC: Measurement Control

RANAP: Direct Transfer (CC: Alerting)RRC: Downlink Direct Transfer (CC: Alerting)

MOC

MTC

MOC/MTC Call Flow timing

RRC messages information

Voice and Video are bothConversational Call

RRC messages information

DL SRB

RRC messages information

UE in DUAL MODE

RRC messages information

Voice AMR

RRC messages information

CS call, 64Kbps,Transparent

Video Call

RRC messages information

Video CS 64:DL SF 32UL SF 16Voice AMR:DL SF 128UL SF 64

Thank You