Eagle Radio Interface Procedures

7/30/2019 Eagle Radio Interface Procedures

http://slidepdf.com/reader/full/eagle-radio-interface-procedures 1/66

Agenda

• Radio Interface Overview

• Cell Synchronisation• Idle Mode Procedures

▪ Broadcast of system Information

▪ PLMN selection

▪ Cell Selection and Reselection

• RRC Connection Setup Procedure

• CS AMR Call Establishment

• PS Call Establishment

• Handover Procedures : Softer, Soft, Inter-RAT



Introduction

UE is powered up

Read BCCH

Cell selection

Register with core network

Originating AMR speech

call

Handovers

Release of AMR speech

call

Radio frame

synchronisation

Cell search

UE is powered

up

Read BCCH

Cell selection

Register with core

network

Cell State Transitions

Radio frame

synchronisation

Cell search

Originating PS Call

AMR Speech call PS Data call



Radio Interface Overview



CN

circuitswitched

(cs)domain

packetswitched

(ps)domain

UTRAN

Radio Network Subsystem (RNS)

Radio Network Subsystem (RNS)

Iub

Iub

Iur

Iu-PS

Iu-CS

Uu

Uu

UE

UE

MSC/VLR

SGSN

RNC

RNC

UTRAN



Protocol Stacks

• Communication between the UE, RNC and circuit switched core makes use of

• Uu interface protocol stack

• Iub interface protocol stack

• Iu,cs interface protocol stack

• A interface protocol stack

Iub Iu,cs

Uu

Node B RNC Multimedia

Gateway3G MSC

A

• Protocol stacks include both user and control planes



CS Radio Interface Protocol (RIP) Control Plane

• The radio interface protocol control plane allows RRC signalling between the RNC and UE

• RRC signalling is communicated across the Iub using the Iub user plane protocol stack i.e. using Frame

protocol and AAL2 based ATM• Acknowledged or unackowledged mode RLC is used between the UE and RNC

WCDMA

L1

RRC

WCDMA

L1

AAL2

FP

ATM

Phy

MAC

RLC-C

AAL2

FP

ATM

Phy

MAC

RLC-C

UE

Node B

RNC

Uu Iub

RRC



CS Radio Interface Protocol (RIP) User Plane

• The 3G MSC provides connectivity to the circuit switched core and PSTN

• Transparent mode RLC is used between the UE and RNC

• AAL2 based ATM is used to transfer user plane data across the Iub and Iu,cs interfaces

WCDMA

L1

e.g.

vocoder

WCDMA

L1

AAL2

FP

ATM

Phy

MAC

RLC-U

AAL2

FP

ATM

Phy

MAC

RLC-U

AAL2

ATM

Phy

Iu,cs UP

AAL2

ATM

Phy

Iu,cs UP

e.g.

vocoder

Phy Phy Phy

LinkLayer

LinkLayer

A Law

PCM,

etc

A Law

PCM,

etcPSTN

UE

Node B

RNC

Multimedia GW 3G MSC

Uu Iub Iu,cs A



UTRAN

RNC

UE CN Iu edge node

NAS signalling and User datai.e. MM, PMM & CC, SS, SMS, SM

Access Stratum Signalling

(Uu Stratum)

RRC

Access Stratum Signalling

(Iu Stratum)

RANAP

AS and NAS Signalling



MAC Layer

RLC Layer

PHY Layer

Control Plane Signalling User Plane

RRC Layer

TrCHs

RLCRLCRLC

RLC

RLCRLC RLC

RLC

BMC

PDCPPDCP

PDCP

PhyCHs

LogCHs

RBs

controlcontrol

control

control

control

Radio Interface Protocol Architecture



WCDMA Frame

• Radio frame: A radio frame is a processing duration which consists of 15 slots. Thelength of a radio frame corresponds to 38400 chips.

• Slot: A slot is a duration which consists of fields containing bits. The length of a slotcorresponds to 2560 chips

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

10ms



Cell Search ProcedureRadio Interface Synchronisation



Cell Synchronisation

Detect cells Acquire slot synchronisation

Phase 1 – P-SCH

Phase 2 – S-SCH

Phase 3 – P-CPICH

Acquire frame synchronisation

Identify the code group of thecell found in the first step

Determine the exact primary

scrambling code used by thefound cell

Measure level & quality of thefound cell

►

http://localhost/var/www/apps/conversion/3GWorkshop/Koklkata/Day%202/WCDMA_RadioInterface_CS_Signalling_Details.ppt





Cell Synchronisation Procedure

When a UE is switched on, it starts to monitor the radio interface to find a suitable cell to camp on but it has to determine,whether there is a WCDMA cell nearby.

If a WCDMA cell is available, the UE has to be synchronised to the downlink transmission of the system information – transmitted on the physical channel P-CCPCH – before it can make a decision, in how far the available cell is suitable to

camp on.Initial cell selection is not the only reason, why a UE wants to perform cell synchronisation. This process is also requiredfor cell re-selection and the handover procedure.

Cell synchronisation is achieved I three phases

• Step 1: Slot synchronisation

– During the first step of the cell search procedure the UE uses the SCH"s primary synchronisation code to acquireslot synchronisation to a cell. This is typically done with a single matched filter (or any similar device) matched tothe primary synchronisation code which is common to all cells. The slot timing of the cell can be obtained bydetecting peaks in the matched filter output.

• Step 2: Frame synchronisation and code-group identification

– During the second step of the cell search procedure, the UE uses the SCH"s secondary synchronisation code tofind frame synchronisation and identify the code group of the cell found in the first step. This is done bycorrelating the received signal with all possible secondary synchronisation code sequences, and identifying themaximum correlation value. Since the cyclic shifts of the sequences are unique the code group as well as theframe synchronisation is determined.

• Step 3: Scrambling-code identification

– During the third and last step of the cell search procedure, the UE determines the exact primary scrambling code

used by the found cell. The primary scrambling code is typically identified through symbol-by-symbol correlationover the CPICH with all codes within the code group identified in the second step. After the primary scramblingcode has been identified, the Primary CCPCH can be detected. And the system- and cell specific BCHinformation can be read.

If the UE has received information about which scrambling codes to search for, steps 2 and 3 above can be simplified.



Broadcast of System Information

Read BCCH

Radio frame

synchronisation

Cell search



P-CCPCH

PCH

BCH

DCCH

CCCH

PCCH

BCCH

DCH

CPICH

S-SCH

P-SCH

FACH

HS-DSCH

AICH

HS-PDSCH

DPDCH

S-CCPCH

DTCH

PICH

Logical

Channels

Transport

Channels

Physical

Channels

DPCCH

Channels carrying System Information

HS-SCCH



System Information

Node B

UTRANSystem Information ( )

UE RNC

NBAP: BCCH Information

MIB

SB1 SIB 1 SIB 2

SIB 11

•Master Information Block (MIB)

-- Reference to other system Information

blocks and scheduling blocks

•Scheduling Blocks (SB1/SB2)

-- References to other system Information

blocks

•(SIB1-SIB18)

-- Contains the actual system

Information



Contents of SIB Type

SIB Type1:

1. CN Common GSM-MAP NAS system information

LAC

CS Domain Specific info ( T3212 Timer value, ATT)

PS Domain specific info ( RAC, NMO)

2. UE Information

UE Timers and constants in IDLE mode

UE Timers and constants in connected mode

SIB Type 2:

UTRAN mobility information elements

URA identity (1..maxURA)



SIB 3

SIB Type 3

Parameters for cell selection and reselection

1. Cell Identity

2. Cell selection and reselection info

3. Cell access Restriction



SIB Type5

Contains parameters for the configuration of common and Physical

channels

1. SIB6 indicator

2. PhyCH information elements

PICH power offset

AICH power offset

PCCPCH info

PRACH sys info list SCCPCH system information

CBS DRX Level 1 information

SIB T 7



SIB Type 7

Contains the fast changing parameters

1) UL interference ( -110 to -70 dBm)

SIB Type 11



SIB Type 11

Contains measurement control information to be used in the cell

1. FACH measurement occasion info

FACH Measurement occasion cycle length coefficientinter frequency FDD measurement indicator

inter-RAT measurement indicators

2. Measurement control Sys info

Use of HCS (Enumerated(not used, used))

Cell selection and Reselection quality measure

inter-freq meas sys info

intra-freq meas sys infointer-RAT meas sys info

Traffic volume meas sys info

UE internal meas sys info



SIB Type 13,14 and 15

SIB Type 13:

Contains ANSI-41 information

SIB Type 14:

Contains UL Outer Loop Power parameters

Meant only for TDD

SIB Type 15:

Contains information pertaining to UE based positioning methods

SIB T 16



SIB Type 16

Contains radio bearer, transport channel and physical channel parameters to

be stored by UE in idle and connected mode. The info is used during

handover to UTRAN

1. RB Information elements

2. TrCH Information Elements

3. PhyCH Information Elements

SIB Type 17 and SIB Type 18



SIB Type 17 and SIB Type 18

SIB Type 17

Only for TDD

SIB Type 18

PLMN identities for neighbouring cells



Cell SelectionUE is powered up

Read BCCH

Cell selection

Radio frame

synchronisation

Cell search

Cell Selection Criterion S



• Which cells are suitable for (initial) cell selection and reselection, so that the UE can camp on them?

• This is determined by the UE based on the cell selection criterion S.

•It is fulfilled, when•Srxlev > 0 AND Squal > 0 in the FDD mode, and

•Srxlev > 0 in the TDD mode.

• Squal delivers the cell Selection quality value (dB).

•The UE determines it according to this formulary: Squal = Qqualmeas – Qqualmin

•The UE measures the received signal quality Qqualmeas of the cell. It is based on CPICH Ec/N0 (dB)

for FDD cells. (CPICH Ec/N0 is averaged.)

•The operator determines for each cell the minimum required received level Qqualmin (dB) at the

UE. This value is the broadcasted. Its integer value can range between –24 and 0 dB.

• A cell is not suitable for cell selection and re-selection, if the measured received signal quality

level is below Qqualmin.

• Srxlev stands for the cell selection receive level value (dB).

•The UE determines it this way: Srxlev = Qrxlevmeas - Qrxlevmin – Pcompensation

•Qrxlevmeas is the cell RX level measured by the UE, based on the CPICH RSCP for FDD cells

(dBm), and the averaged received signal level for GSM cells (dBm). (All values get averaged!)

•The operator sets the value Qrxlevmin as minimum required RX level in the cell (dBm), which is

sent to the UE via the BCCH. Its integer value can range between –115 dBm and –25 dBm (2 dB

step size).


Cell Selection Criterion S (in the FDD mode)



Qqualmeas (dB)

(CPICH Ec/N0)

Qrxlevmeas (dBm)

CPICH RSCP

Qqualmin

( –24...0)

Qrxlevmin

( –115... –25)

Srxlev > 0

Pcompensation

Squal > 0S-Criterion

fulfilledSqual >0 AND

Srxlev > 0

suitabl

e

cell?

Cell Selection Criterion S (in the FDD mode)




• If the UE determines the cell„s RX level value Q rxlevmeas and Qrxlevmin calculated the Srxlev

accordingly, it may have good RX level which means, that a good DL connection can be established.

• But the UE„s own output power capability has to be taken under consideration. This is done with

•Pcompensation = max(UE_TXPWR_MAX_RACH – P_MAX, 0) (dB)

• In order to access a cell, the UE has to use the common channel PRACH.

• The operator determines the maximum cell radius by limiting the maximum TX power level, a UE can

use on the PRACH. This is the UE_TXPWR_MAX_RACH (dBm).

• UE_TXPWR_MAX_RACH can range – according to the specifications - between –50 dBm and 33

dBm.

On the other hand, there is the UE„s maximum RF output power, given by P_MAX (dBm).






Pcompensation

= max(UE_TXPWR_MAX_RACH – P_MAX, 0)

Cell size defining parameters:

• Qrxlevmin

• Qqualmin

I am

outsid

e

I am inside,

but have not

enough

power

-50 .. 33 dBm

(Initial) Cell Selection Process



• There exist two cell selection procedures:

• Initial Cell Selection

•The UE has to find a suitable cell of the PLMN, which was selected by the NAS.

•To do so, the mobile phone scans all radio frequency carriers of UTRA. Hereby, the UE focuses

its cell search to the suitable cell on each carriers.

• As soon as the mobile phone has found a suitable cell, it selects it.

• Stored Information Cell Selection

•To speed up the cell selection process – for instance, when the UE is switched on again –

information about UTRA carriers, even cell parameters such as cell scrambling codes can be

stored in the UE.•The UE uses this information to find a suitable cell of the PLMN, which was selected by the NAS.

•If the cell selection based on stored information in the UE fails – e.g. the selected PLMN cannot

be found – the UE continues the cell selection process based on the Initial Cell Selection

procedure.

• Both for Initial Cell Selection and Stored Information Cell Selection, a cell is only suitable for the UE to

camp on, if it fulfils the cell selection criterion S:

•Srxlev > 0 AND Squal > 0 in the FDD mode, and•Srxlev > 0 in the TDD mode.





Initial Cell Selection

(scan RF channel)

Stored Information

Cell Selectionor

I have to find

a suitable

cell

Squal = Qqualmeas – Qqualmin > 0Srxlev = Qrxlevmeas – Qrxlevmin – Pcompensation > 0

Once a suitable cell is found this cell is selected


Cell Selection When Leaving the RRC Connected Mode



• Active Set cells as candidates for cell

selections; if not suitable, then

• Stored information cell selection Squal > 0Srxlev > 0

Cell Selection When Leaving the RRC Connected Mode

Nokia Parameters for Cell Selection



• WCEL: QrxlevMin

•The minimum required RX level in the cell.

•This parameter is part of SIB 3.

•[-115 ... –25] dBm, step 2 dBm; default: -115 dBm.

• WCEL: QqualMin

•The minimum required quality level in the cell (Ec/No).

•This parameter is part of SIB 3.

•[-24 ... 0] dB, step 1 dB, default: -18 dB.

• WCEL: UEtxPowerMaxPRACH

•This parameter defines the maximum transmission power level a UE can use on

PRACH.

•The value of the parameter also effects the cell selection and reselection

procedures.

•The value of the parameter is sent to UE in the Cell selection and re-selection of

SIB 3 and 4 of the serving cell.

[..]

o a a a ete s o Ce Se ect o



Cell Reselection

Cell reselection



Measuredneighbours

Neighbour listfrom BCCH

Best ranked cell

Measurement criteria

S – criteria

Suitableneighbours

R – criteria

Re-selection if not serving cell

Cell Reselection: Measurement Rules



• As part of the network planning process, the operator has to determine the threshold values, which

trigger the cell re-selection process by the UE.

• The operator has also to decide, whether to use the HCS. The BCCH is used to inform the UE about

the use of HCS.

• Intra-Frequency measurement threshold Sintrasearch

•If this parameter is not sent in the serving cell, the UE must always perform intra-frequency

measurements. If it is transmitted and Sx > Sintrasearch, the UE does not perform intra-frequency

measurements. If Sx <= Sintrasearch, it performs intra-frequency measurements.

• Inter-Frequency measurement threshold Sintersearch

•If this parameter is not sent in the serving cell, the UE must always perform inter-frequencymeasurements. If it is transmitted and Sx <= Sintersearch, it must perform inter-frequency

measurements, but if Sx > Sintersearch, there is no need to perform this type of measurement.

• Inter-RAT measurement threshold SsearchRAT m

•If this parameter is not sent in the serving cell, the UE must always perform inter-system

measurements. If it is transmitted and Sx > SsearchRAT m, it won„t conduct measurements on cells of

radio access technology “m”. But if Sx <= SsearchRAT m, it has to do these measurements.

• Sintrasearch, Sintersearch, and SsearchRAT m can get integer values ranging from –32 to 20 (step size 2) in

the FDD mode. Negative values are set to 0 by the UE.

Cell Reselection: Measurement Rules



Sintrasearch SintersearchSsearchRAT m

No need tomeasure

neighbour cells

Intra-frequency

Sx=Squal (in FDD mode)

Intra-frequencyInter-frequency

serving cell

Example: Nokia

Qqualmin = -18 dB,

Sintrasearch = 10dB,

Sintersearch = 8dB,

Ssearch_RAT = 4dB

When to perform

measurements

Intra-frequency

Inter-freqencyInter-RAT

-8 dB-10 dB-14 dBEC/N0 =

Cell Reselection: R-Criterion



• After checking the measurement thresholds, the UE has detected suitable cells to camp on.

• But which of the remaining candidate cells is the best one for cell re-selection?

• For that, a cell-ranking criterion R was specified:

•Rs = Qmeas,s + Qhysts (for the serving cell)

•Rn = Qmeas,n - Qoffsets,n (for candidate neighbouring cells for cell reselection)

• The serving cell and the remaining candidate cells are ranked according to criterion R.

• The cell ranked with the highest value R is the best cell for the UE to camp on.

• Qhysts gives a hysteresis value to make the serving cell more attractive and thus delay the cell re-

selection. It exists in two versions:

•It ranges between 0 and 40 (step size 2).

• The value Qoffset is an offset given for each individual neighbouring cell, which ranges between –50

and 50 dB, with default set to 0.




• Is the cell re-selection initiated immediately after the UE ranks a neighbouring cell to be the best?

•If so, we could face a ping-pong effect – a UE often performing cell reselection between two

neighbouring cells.

•To avoid this, the operator uses the time interval value Treselection, whose value ranges

between 0 and 31 seconds.

•Only when a cell was ranked Treselection seconds better then the serving cell, a cell reselection

to this cell takes place.

•In addition to this, a UE must camp at least 1 second on a serving cell, before the next cell re-

selection may take place.

• How often are the cell re-selection criteria evaluated?

•This is done at least once every DRX cycle for cells, for which new measurement results are

available.




Rs = Qmeas,s + Qhysts

Rn = Qmeas,n - Qoffsets,n

Qmeas,n

Qmeas,s

Q m e a s

Rs

Rn

Qoffsets,n

Qhysts

Rn > Rs =>“cell reselection“

Treselection



45 © Nokia Siemens Networks Presentation / Author / Date

For internal use



Register with Core Network

UE is powered up

Read BCCH

Cell selection

Register with core network

Originating AMR speech call

Handovers

Release of AMR speech call

Radio frame synchronisation

Cell search

Register with the Core Network UE is

d



gpowered up

Read BCCH

Cell selection

Register with core

network

Originating AMR

speech call

Handovers

Release of AMR

speech call

Radio frame

synchronisation

Cell search• The UE registers with the CS core domain

• CS domain registering is an IMSI attach

• Registering is achieved by establishing an RRC connection and sending

NAS messages to the CS core

• RRC CONNECTION ESTABLISHMENT

• LOCATION UPDATING PROCEDURE

►

UTRAN Specific Signalling Protocols

http://localhost/var/www/apps/conversion/3GWorkshop/Koklkata/Day%202/MO_CS_Call_Flow.ppt








3G-MSC/VLR

3G-SGSN

UE Node BRNC

RNC

RNS

RNS

RRC

Iur: RNSAP



RRC Connection Establishment




Node BUE RNC

[RACH] RRC Connection Request

[DCH] RRC Connection Setup Complete

[FACH] RRC Connection Setup

accept

ed


[FACH] RRC Connection Reject

UE RNC

rejected

RRC Modes



Release RRC

Connection

Release RRC

Connection

Establish RRC

Connection

URA_PCH

CELL_DCH CELL_FACH

CELL_PCH

Establish RRC

Connection

UTRA RRC Connected Mode

Idle Mode

GSM

ConnectedMode

GPRS Packet

Transfer

Mode

(UE camps on UTRAN cell)

Release RR

Connection

Establish RR

Connection

GSM-UMTS Handover

UTRA: Inter-RAT Handover

(MS in GPRS

Packet Idle Mode)

Cell

Resele-ction

Initiation

of a TBF

Release

of a

TBF

(MS camps on a GERAN cell)

(adopted from TS 25.331 V3.1

CELL_DCH State



active set

cell

active set

cell

• DCCH and – if configured – DTCH

• Dedicate physical channel in use

• UE location known on active set

cell level

• UE responsible for measurement

reporting

• RRC messages on DCCH

CELL_FACH State



serving

cell

• DCCH and – if configured – DTCH

• FACH used for higher layer data

transfer,

• UE monitors FACH permanently• Uplink transmission on RACH

• UE location known on serving cell

level

• UE performs cell re-selection

• UE responsible for measurement

reporting

• Cell system information on BCCH• RRC messages on BCCH, CCCH

and DCCH

CELL_PCH and URA_PCH State



URA – UTRAN Registration Area

• no DCCH and DTCH

• Before uplink transmission UE moves to CELL_FACH

• UE must be paged

• RRC messages on BCCH and PCCH• In CELL_PCH

- UE location known on cell level

- UE performs cell re-selection and cell updates

• In URA_PCH

- UE location known on URA level

- UE performs cell re-selection and URA updates




Node BUE RNC


[DCH] RRC Connection Setup Complete

[FACH] RRC Connection Setup

accept

ed


[FACH] RRC Connection Reject

UE RNC

rejected

Signalling Radio Bearers



RNC

Radio Bearer

LogCH

NAS Signalling

RRC layer

MAC

RLC

UL: TrM

DL: UM

RB1

CCCH

RLC

UL & DL:

UM

RB2

DCCH

RLC

UL & DL

AM

RB3

DCCH

RLC

UL & DL

AM

RB4

DCCH

RB0

RLC

UL & DL

AM

DCCH

UE

RRC Connection Setup ( )

RRC Signalling

RRC Connection Setup messageRRC Connection Set p ( )



UERNC


RRC layer

PHY

MAC

RLC

PDCP BMC

Radio Beare

LogCH

TrCH

PhyCH

NAS Signalling user plane

PhyCh

configuratio

n

TrCH

configuratio

n

RB

configuratio

n

Signalling Channel configuration



Logical

ChannelsTransport

Channels

Physical

Channels

Data

DCCH1-4

DPCH

RRC

signallingDCH1

RRC Connection Setup messageRRC Connection Setup ( )



UERNC


RRC layer

PHY

MAC

RLC

PDCP BMC

Radio Beare

LogCH

TrCH

PhyCH

NAS Signalling user plane

PhyCh

configuratio

n

TrCH

configuratio

n

RB

configuratio

n

RRC Connection SetupUE Node-B RNC CN



RRC Connection Setup Request ( CCCH on RACH)

Radio Link Setup RequestNBAPNBAP

Radio Link Setup ResponseNBAPNBAP

RRC Connection Setup Complete (DCCH on DCH)

RRC Connection Setup (CCCH on FACH)

Establish Request ALCAP ALCAP

Establish Response ALCAP ALCAP

RRC RRC

RRCRRC

RRC RRC

Signalling Bearer

establishment

AMR Speech CallUE is powered up

Cell search



Read BCCH

Cell selection

Register with core

network

AMR speech call

Handovers

Release of AMR

speech call

Radio frame

synchronisation

Cell re-selections

• The AMR speech call can be either mobile originated or mobile terminated

• The following slides present a mobile originated call

• The first step is to establish an RRC connection. This is done in the same

way as for the IMSI attach procedure

• The only difference is that the establishment cause specified in the RRC

Connection Request message is specfied as

originatingConversationalCall

Mobile Terminated Call (MTC)

Iu-CS

Connection

Radio

Access

Bearer

Paging

Mobile Originated Call

RRC

Connectio

n



64 © Nokia Siemens Networks Presentation / Author / Date

For internal use

Iu-CS Call Setup

Overview of Setting Up Call




ServiceRequest

Radio

Access

Bearer

Paging


RRCConnection

Iu-CS Call Setup (CM Service Request)UE RNC MSCNode-B



RRC Connection Setup

Initial Direct Transfer

CM Service Request RRC RRC

Initial UE Message

CM Service RequestRANAPRANAP

Initial UE Message

CM Service AcceptRANAPRANAP


CM Service Accept RRC RRC

Iu-CS Call Setup (CM Service Request)UE RNC MSC

Node-B



RRC Connection Setup

Direct Transfer

( Call Proceeding)RANAPRANAP

Downlink Direct Transfer (Call Proceeding) RRC RRC

Uplink Direct Transfer (Set up) RRC RRC

Direct Transfer (Setup)RANAPRANAP

Security Mode Command


CM Service Request RRC RRC

Initial UE Message

CM Service RequestRANAPRANAP

Overview of Setting up an AMR call




Iu_CSconnection

Radio

Access

Bearer

Paging


RRCConnection

Iu-CS Call Setup (RAB Setup)UE Node-B RNC MSC



RRC Connection Setup & CM Service Request & Call Setup

RAB Assignment RequestRANAPRANAP

RAB Assignment ResponseRANAPRANAP

Radio Bearer Setup RRC RRC

Radio Bearer Setup complete RRC RRC

Establish Request/Confirm

ALCAP ALCAP

NBAP Procedures NBAPNBAP

ALCAP Procedures ALCAP ALCAP

Call SetupUE Node-B RNC MSC



RRC Connection Setup, Iu CS Call Setup, Radio Bearer Setup

Alerting

Connect

Connect Acknowledge

Call Established

Release of AMR Speech CallUE is powered up

Cell search

Th ll i l d i t ll d h ith th i i ti



Read BCCH

Cell selection

Register with core

network

AMR speech call

Release of AMRspeech call

Radio frame

synchronisation

• The call is released in a controlled manner when either the originating or

terminating terminal hangs-up

• The RRC connection is released and the UE returns to RRC Idle mode

Release of AMR Speech CallUE RNC MSCNode B



Call Established

Iu Release Command

Iu Release Complete

RRC Connection Release

RRC Connection Release Complete



Radio Link Deletion Request

Radio Link Deletion Response

ALCAP: Release Request

ALCAP: Release Response

ALCAP: Release Request

ALCAP: Release Response

Call Released

Direct Transfer (Disconnect)

Direct Transfer (Release)

Direct Transfer (Release Complete)

•UE returns to Idle Mode

Eagle Radio Interface Procedures

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Transcript of Eagle Radio Interface Procedures