3G Optimization Documents

3G OPTIMIZATION GUIDELINES

3G OPTIMIZATION OVERVIEW

Network Optimizatio

n

Capacity Manageme

nt

Netact OSSPerformanc

e Monitoring

NETWORK OPTIMIZATION

OBJECTIVE

Poor Coverage

Optimum Area

Poor Quality

Poor Coverage

COVERAGE & DOMINANCEDrive Test

Measurement

Drive Test Measureme

nt

Coverage area

optimization

Coverage area

optimization

Dominance area

optimization

Dominance area

optimization

Complete Measurement

Analysis

Complete Measurement

Analysis

Best server’s CPICH RSCP> -95 dBm

Best server’s Ec/No > -10 dB

Yes

No

Yes

No

Coverage problem area

Dominance area

optimization

Dominance area

optimization

Dominance problem area

(High best server Ec/No)

4th Best server’s Ec/No < 6 dB (ref to

Best server)

No

Yes

A

B

C

Dominance problem area

(Low best server Ec/No)

BLOCK A Task

To identify area where RSCP is less than –95 dBm and to optimize the coverage of that affected area

Reason Area where RSCP is less than –95 dBm and poor Ec/No value would be consider coverage

problematic area or has poor coverage This would lead to call set up failure, HO failure, drop call and degradation to the PS

throughput Items required for analysis

RSCP and Ec/No plots for best server on map Plot of RSCP vs Ec/No to have quick understanding of the problem Measurement log files

Solution Up-tilting, panning and height of antenna changes Increase CPICH power Antenna type changing to a higher gain Check missing neighbors Use NetAct to check coverage prediction by changing the inputs of the site Use the MapInfo/UMTS tool for antenna tilting to estimate coverage improvement (optional)

BLOCK B Tasks

To identify area which RSCP > -95 dBm but Ec/No < -10 dB and to optimize the affected area Reasons

In this area problems are more on the dominance and pilot pollution This would lead to call set up failure, HO failure, drop call and degradation to the PS

throughput Items required for analysis

Plots of Ec/No and RSCP for best server on map Plots of Ec/No of each scrambling in the affected area Plots RSCP vs Ec/No Measurement log files

Solution Down-tilting, panning and antenna height changes Increase CPICH of serving cell, decrease CPICH of interfering cells Check for missing neighbors Check co-scrambling code Change antenna type to lower gain

BLOCK C Task

To identify the 4th best server is < 6dB to the reference of best server and optimize the area

Reasons To meet the KPI Too many best servers would cause unnecessary HO Wasting resources (hardware channels, Iub capacity etc)

Item required for analysis Measurement log file

Solution Down-tilting, panning and antenna height changed Increase CPICH of serving cell, decrease CPICH of interfering cells Use MapInfo/UMTS to generate the percentage Antenna type change to lower gain

CAPACITY MANAGEMENT

BLOCKING POINTS IN 3G NETWORK

NODE B LOADING: UL/DL LOADING (1)

dBmkDENOMPRXTOT

kDENOMPRXTOTkCLASSPRXTOTAVE

dBm) (in Load UL AverageRNC_101b

ClassesAllk

ClassesAllk

_

_

__

_____ dBm

kDENOMPRXTOT

kDENOMPRXTOTkCLASSPRXTOTAVE

dBm) (in Load UL AverageRNC_101b

ClassesAllk

ClassesAllk

_

_

__

_____

dBmkDENOMPTXTOT

kDENOMPTXTOTkCLASSPTXTOTAVE

dBm) (in Load DL Average RNC_102b

ClassesAllk

ClassesAllk

_

_

__

_____

dBmkDENOMPTXTOT

kDENOMPTXTOTkCLASSPTXTOTAVE

dBm) (in Load DL Average RNC_102b

ClassesAllk

ClassesAllk

_

_

__

_____

Depends on the dimensioning, typically, UL Load = 50% & DL Load = 65%.

Counters & KPIs that needs to be monitored.

NODE B LOADING: UL/DL LOADING (2)

Call Setup Failure due to Radio Interface resource shortage would be triggered in RRC and RAB call setup failure cause “AC”

Counters that will be triggered if there is a limitation on the Node B load/Power.

Solutions:

Upgrade WPA from 20W to 40W

Parameter Tuning.

Feature such as Dynamic Power Allocation

NODE B CAPACITY: CHANNEL ELEMENT (1)

WSPC 1 WSPC 2DL UL DL UL

1 12 23 34 45 8 9 10 11 8 8 8 8 56 12 13 14 15 9 9 9 9 67 16 10 10 10 10 78 1 1 1 1 11 11 11 11 89 1 1 1 1 12 12 12 12 9 1 2 3 4 1 1 1 1

10 1 1 1 1 16 16 16 16 10 5 6 7 2 2 2 211 1 1 1 1 14 14 14 14 11 3 3 3 312 2 2 2 2 15 15 15 15 12 4 4 4 413 2 2 2 2 16 16 16 16 13 5 5 5 514 2 2 2 2 1 1 1 1 14 6 6 6 615 2 2 2 2 2 2 2 2 15 7 7 7 716 16

Common channels (for 3 carriers)

HSDPA 5 codes

HSDPA associated DCH (16 users, 16 kbps DL, 128 kbps UL)

384 / 64 kbps DCH users (2 users)

Example baseband configurationwith 2 WSPC cards

Associated dedicated channels arerequired for HSDPA users: 16 kbps DL for uplink power control and SRB and 64…384 kbps UL channel for TCP ACK’s and uplink user data and SRB

HSDPA and associated DCHs effectively balance the baseband UL/DL resource consumption even if the traffic is DL oriented.

NODE B CAPACITY: CHANNEL ELEMENT (2)

Counters/KPI that needs to be monitored in case of lack of CEs

Solutions:

Upgrade WSPC or add more CEs.

Parameter tuning.

CHANNELIZATION CODES (1)Code Occupancy MonitoringCode Blocking Monitoring

%_CAPACITYDENOM_CODE

ITYCODE_CAPACRNC_113a 100

%

_CAPACITYDENOM_CODE

ITYCODE_CAPACRNC_113a 100

Average Occupancy Formula

CHANNELIZATION CODES (2) Call Setup Failure due to Channelisation Code congestion would be triggered in RRC and RAB call setup failure cause “BTS”

Possible Solution: The code tree is per cell per carrier.

1) If available, go for a 2nd Carrier

2) Add more sites (Macrosite, Microcell Site or In-building Site).

IuB INTERFACE(1)

In RAS06, the new ATM Interface measurement (M532) gives indication of the ATM interface traffic load by reporting the traffic volumes and the bandwidth available for a specific interface. The measurement can also be used to detect interfaces that are congested and cause traffic loss. Congestion can be detected by following the number of ATM cells going in and coming out from the interface.

AAL2 connections are allocated and released by ATM Resource Management which will check AAL2 reservation using CAC. M550 measurement reports RNC CAC resource usage for Iub AAL2 user plane traffic downlink

IuB INTERFACE(1)Call Setup Failure due to Radio Interface resource shortage would be triggered in RRC and RAB call setup failure cause “Transmission”

RNCWBTSIuB

1E1 = 2Mbps

2E1 = 4Mbps

5 (PS384) users = 1920 Kbps

If 1 E1 = 1920/2000 = 96% IuB Util.

PERFORMANCE MONITORING

OSS KPI PERFORMANCE MONITORING

• CELL AVAILABILITY• RRC SET-UP & ACCESS COMPLETE

RATIO• VOICE, VIDEO & PS RAB SET-UP

SUCCESS & DROP RATE• INTER SYSTEM HANDOVER SUCCESS

RATE• SOFT HANDOVER SUCCESS RATE• SOFT HANDOVER OVERHEAD

CELL AVAILABILITY

Alarm in the cell

start

stop

RNC_183c (Cell Avail)= 100*(cellres.avail_wcell_in_wo_state) / (cellres.avail_wcell_exists_in_rnw_db)

RNC_727a (CellAvail, excl BLU)= 100*(cellres.avail_wcell_in_wo_state) / (cellres.avail_wcell_exists_in_rnw_db - cellres.avail_wcell_blocked_by_user)

RRC SETUP & ACCESS COMPLETE RATIO RNC_94e (RRC SACR, NW) = 100*(servlev.rrc_conn_acc_comp +

servlev.rrc_con_setup_comp_directed) / (servlev.rrc_conn_stp_att + servlev.rrc_conn_setup_comp_aft_dir - servlev.rrc_conn_stp_rej_emerg_call))

Typical Value >99.00%

VOICE, VIDEO & PS RAB SET-UP SUCCESS RATE•Voice RAB Setup Success Rate

(M1001C115 RAB Access Comp /M1001C66 RAB Setup Attempts)*100%Typical Value >99.00%

•Video RAB Setup Success Rate

(M1001C116 RAB Acc Comp/M1001C67 RAN Setup Att)*100%Typical Value >99.00%

•PS Data RAB Setup Success Rate

(M1001C120 RAB Acc Comp PS Inter+M1001C121 RAB Acc Comp PS Background)/(M1001C71 RAB Setup Att PS Inter+M1001C72 RAB Setup Att PS Backg-M1001C113 RAB Setup Fail Anchor PS Back)*100%Typical Value >99.00%

FAILURE BREAKDOWN

RAB SETUP Fail AC

RAB SETUP Fail BTS

RAB SETUP Fail Transport

RAB SETUP Fail RNC

RAB SETUP Fail Frozen BTS

RAB ACC Fail UE

RAB ACC Fail RNC

FAILURE BREAKDOWN

RAB SETUP Fail AC

RAB SETUP Fail BTS

RAB SETUP Fail Transport

RAB SETUP Fail RNC

RAB SETUP Fail Frozen BTS

RAB ACC Fail UE

RAB ACC Fail RNC

FAILURE BREAKDOWN

RAB SETUP Fail AC PS Inter

RAB SETUP Fail RNC PS Inter

RAB SETUP Fail Frozen BTS PS Inter

RAB SETUP Fail Frozen Iub PS Inter

RAB ACC Fail UE PS Inter

RAB ACC Fail RNC PS Inter

RAB SETUP Fail AC PS Backg

RAB SETUP Fail RNC PS Backg

RAB SETUP Fail Frozen BTS PS Backg

RAB SETUP Fail Frozen Iub PS Backg

RAB ACC Fail UE PS Backg

RAB ACC Fail RNC PS Backg

VOICE, VIDEO & PS RAB DROP CALL RATE•Voice RAB Drop Ratio(M1001C145 RAB Act Fail Iu+M1001C146 RAB Act Fail Radio+M1001C147 RAB Act Fail BTS+M1001C148 RAB Act Fail Iur+M1001C149 RAB Act Fail Integ Chk+M1001C150 RAB Act Fail RNC+M1001C392 RAB Act Fail UE)/(M1001C136 RAB Act Comp+M1001C143 RAB Act Rel to SRNC Reloc+M1001C144 RAB Act Rel to Pre-Emp+M1001C145 RAB Act Fail Iu+M1001C146 RAB Act Fail Radio+M1001C147 RAB Act Fail BTS+M1001C148 RAB Act Fail Iur+M1001C149 RAB Act Fail Integ Chk+M1001C150 RAB Act Fail RNC+M1001C392 RAB Act Fail UE)*100%

Typical Value <1.00%

VOICE FAILURE BREAKDOWNRAB Act Fail Iu

RAB Act Fail Radio

RAB Act Fail BTS

RAB Act Fail Iur

RAB Act Fail Integ Chk

RAB Act Fail RNC

RAB Act Fail UE

•Video RAB Drop Ratio(M1001C155 RAB Act Fail Iu+M1001C156 RAB Act Fail Radio+M1001C157 RAB Act Fail BTS+M1001C158 RAB Act Fail Iur+M1001C159 RAB Act Fail Integ Chk+M1001C160 RAB Act Fail RNC+M1001C393 RAB Act Fail UE)/(M1001C37 RAB Act Comp+M1001C151 RAB Act Rel to SRNC Reloc+M1001C152 RAB Act Rel to Pre-Emp+M1001C155 RAB Act Fail Iu+M1001C156 RAB Act Fail Radio+M1001C157 RAB Act Fail BTS+M1001C158 RAB Act Fail Iur+M1001C160 RAB Act Fail RNC+M1001C393 RAB Act Fail UE)*100%


VIDEO FAILURE BREAKDOWNRAB Act Fail Iu

RAB Act Fail Radio

RAB Act Fail BTS

RAB Act Fail Iur

RAB Act Fail Integ Chk

RAB Act Fail RNC

RAB Act Fail UE

•PS Data RAB Drop Ratio

(M1001C185 RAB Act Fail Iu PS Inter+M1001C186 RAB Act Fail Radio PS Inter+M1001C187 RAB Act Fail BTS PS Inter+M1001C188 RAB Act Fail Iur PS Inter+M1001C190 RAB Act Fail RNC PS Inter+M1001C191 RAB Act Fail Iu PS Backg+M1001C192 RAB Act Fail Radio PS Backg+M1001C193 RAB Act Fail BTS PS Backg+M1001C194 RAB Act Fail Iur PS Backg+M1001C196 RAB Act Fail RNC PS Backg)/(M1001C141 RAB Act Comp PS Inter+M1001C142 RAB Act Comp PS Backg+M100171 RAB Act Rel SRNC Reloc PS Inter+M1001C172 RAB Act Rel SRNC Reloc PS Backg+M1001C185 RAB Act Fail Iu PS Inter+M1001C186 RAB Act Fail Radio PS Inter+M1001C187 RAB Act Fail BTS PS Inter+M1001C188 RAB Act Fail Iur PS Inter+M1001C190 RAB Act Fail RNC PS Inter+M1001C191 RAB Act Fail Iu PS Backg+M1001C192 RAB Act Fail Radio PS Backg+M1001C193 RAB Act Fail BTS PS Backg+M1001C194 RAB Act Fail Iur PS Backg+M1001C196 RAB Act Fail RNC PS Backg+M1001C397 RAB Act Fail UE PS Inter+M1001C398 RAB Act Fail UE PS Back)*100%


PS DATA FAILURE BREAKDOWNRAB Act Fail Iu PS Inter

Act Fail Radio PS Inter

RAB Act Fail BTS PS Inter

RAB Act Fail Iur PS Inter

RAB Act Fail Integ Chk PS Inter

RAB Act Fail RNC PS Inter

RAB Act Fail UE PS Inter

RAB Act Fail Iu PS Backg

RAB Act Fail Radio PS Backg

RAB Act Fail BTS PS Backg

RAB Act Fail Iur PS Backg

RAB Act Fail Integ Chk PS Backg

RAB Act Fail RNC PS Backg

RAB Act Fail UE PS Back

ISHO RT, ISHO NRT, SOFT HOSR & SHO OVERHEAD•ISHO RT SR100 * sum( SUCC_IS_HHO_UL_DCH_Q_RT + SUCC_IS_HHO_UE_TRX_PWR_RT + SUCC_IS_HHO_DL_DPCH_PWR_RT + SUCC_IS_HHO_CPICH_RSCP_RT + SUCC_IS_HHO_CPICH_ECNO_RT + SUCC_IS_HHO_IM_IMS_RT + SUCC_IS_HHO_EMERG_CALL + SUCC_IS_HHO_LB_PRX_TOT_RT + SUCC_IS_HHO_LB_PTX_TOT_RT + SUCC_IS_HHO_LB_RES_LIM_RT + SUCC_IS_HHO_LB_RSVR_SC_RT + SUCC_IS_HHO_SB_RT) ---------------------------------------- sum( IS_HHO_ATT_UL_DCH_Q_RT + IS_HHO_ATT_UE_TRX_PWR_RT + IS_HHO_ATT_DPCH_PWR_RT + IS_HHO_ATT_CPICH_RSCP_RT + IS_HHO_ATT_CPICH_ECNO_RT + IS_HHO_ATT_IM_IMS_RT + IS_HHO_ATT_EMERG_CALL + IS_HHO_ATT_LB_PRX_TOT_RT + IS_HHO_ATT_LB_PTX_TOT_RT + IS_HHO_ATT_LB_RES_LIM_RT + IS_HHO_ATT_LB_RSVR_SC_RT + IS_HHO_ATT_SB_RT )

TYPICAL VALUE > 98%

•ISHO NRT SR100 * sum( SUCC_IS_HHO_UL_DCH_Q_NRT + SUCC_IS_HHO_UE_TRX_PWR_NRT + SUCC_IS_HHO_DL_DPCH_PWR_NRT + SUCC_IS_HHO_CPICH_RSCP_NRT + SUCC_IS_HHO_CPICH_ECNO_NRT + SUCC_IS_HHO_IM_IMS_NRT + SUCC_IS_HHO_EMERG_CALL + SUCC_IS_HHO_LB_PRX_TOT_NRT + SUCC_IS_HHO_LB_PTX_TOT_NRT + SUCC_IS_HHO_LB_RES_LIM_NRT + SUCC_IS_HHO_LB_RSVR_SC_NRT + SUCC_IS_HHO_SB_NRT) ---------------------------------------- sum( IS_HHO_ATT_UL_DCH_Q_NRT + IS_HHO_ATT_UE_TRX_PWR_NRT + IS_HHO_ATT_DPCH_PWR_NRT + IS_HHO_ATT_CPICH_RSCP_NRT + IS_HHO_ATT_CPICH_ECNO_NRT + IS_HHO_ATT_IM_IMS_NRT + IS_HHO_ATT_EMERG_CALL + IS_HHO_ATT_LB_PRX_TOT_NRT + IS_HHO_ATT_LB_PTX_TOT_NRT + IS_HHO_ATT_LB_RES_LIM_NRT + IS_HHO_ATT_LB_RSVR_SC_NRT + IS_HHO_ATT_SB_NRT )

TYPICAL VALUE > 95%

•Soft Handover Success Rate(M1007C15 Succ ASU on SHO RT+M1007C32 Succ ASU on SHO NRT)/(M1007C10 Cell Add Req on SHO RT+M1007C11 Cell Del Req on SHO RT+M1007C12 Cell Rep Req on SHO RT+ M1007C27 Cell Add Req on SHO NRT+M1007C28 Cell Del Req on SHO NRT+M1007C29 Cell Rep Req on SHO NRT)*100%

TYPICAL VALUE <98%

•Soft Handover Overhead((M1007C0 One Cell in AS RT+M1007C1 Two Cells in AS RT+M1007C2 Three Cells in AS RT+M1007C19 One Cell in AS NRT+M1007C20 Two Cells in AS NRT+M1007C21 Three Cells in AS NRT)/((M1007C0 One Cell in AS RT+M1007C19 One Cell in AS NRT)/1+(M1007C1 Two Cells in AS RT+M1007C20 Two Cells in AS NRT)/2+(M1007C2 Three Cells in AS RT+M1007C21 Three Cells in AS NRT)/3)-1)*100%

TYPICAL VALUE <40%

Common Call Performance Issues

Behaviour Problem Description Possible solutions

Call set-up failure & Call drop

Poor coverage area If problem is poor coverage, this means poor RSCP (<-95 dBm) thus also the EcNo degrades very rapidly (< -12 dB) when the coverage border is reached.

Check Antenna line installation (antenna position and quality, cable length and quality). Check that CPICH powers are balanced between the studied cells. Check presence of shadowing obstacles. Add a site to the area.


Poor dominance area. No main server in the area, too many cells with weak CPICH level. CPICH EcNo is usually very bad even the RSCP is good e.q. RSCP –80…-90 dBm but EcNo about –10 dB

Use buildings and other environmental structures to isolate cell(s) coverage. Down tilt antennas to make cells dominant and limit effects of interfering cell(s). Check antenna bearing. Add a site.


Pilot Pollution Bad CPICH Ec/Io (<-12 dB) level although CPICH RSCP level is good. High site in the neighbourhood may cause interference.

Find interfering cell from Scanner results. Adjust antenna bearing and down tilt or lower the antenna height (too much tilt will break the dominance). Add interfering cell to the neighbour of the serving cell.

Dropped call/SHO failure Missing neighbour A good usable neighbour is present within cells coverage area, can cause DL interference if it is not in the active set. Swapped sectors in WBTS.

Check scanner data and look for missing neighbours. Check the cabling in antenna line.




High PrxTotal due to UL External interference

The PrxTotal level is significantly higher than expected in no/low load conditions.

Try to figure the possible area/direction of the interference by checking PrxTotal level on neighbouring cells. Alternatively use spectrum analyser & directive antenna to locate interferer. Inform operator/regulator about the found conditions.


High PrxTotal due to wrong MHA settings


In case of MHA is used in BTS check MHA and cables loss parameters, otherwise PrxTotal value will be too high. (If MHA parameter is set to ON, Cable loss parameter is used, Cable loss = Real MHA gain = Feeder loss parameter)


High Prxtotal due to Installation problems


Check the antenna installation as the last alternative in high PrxNoise case.

Cell set-up failure Bad RRC connection set-up success rate due to slow Ue cell reselection

RRC connection set-up complete message not heard by BTS.

Set parameters so that reselection process will start earlier: Qqualmin, Sintrasearch and Qhyst2 as per latest recommendation

Long call set-up time Long time interval for sync between RNC and BTS before connection

The value of Parameter N312 is too high: maximum number of “in sync” indications received from L1 during the establishment of a physical channel

Use smaller value N312 (2, recommendation is 4).Use call set-up time optimisation feature Dynamic setting of “ActivationTimeOffset” (possible in RAN1.5.2 ED2) enables 200 to 500ms reduction for set up delay.



Dropped call Cell suffering from UL interference = DL (CPICH) coverage much bigger than UL coverage

As the UE Tx power is not enough for target cell synchronisation, the SHO fails which will cause call drop later.

Use cell individual offset (negative value) parameter to balance the DL and UL coverage.

Dropped call DL CPICH coverage < UL coverage

Cell with lower CPICH power than the surrounding is having “too good” UL performance, as this cells’ UL cannot be used efficiently due to SHO is decided upon DL (CPICH Ec/No).

Use cell individual offset (positive value) parameter to balance the DL and UL coverage.

Dropped call Round the corner effect

The call drops due to too rapid CPICH coverage degradation for Cell A, and therefore there is not enough time for SHO.

Use cell individual offset (positive value) parameter to balance the DL and UL coverage.

Dropped call/SHO failure Too many neighbours In SHO area the number of combined neighbouring cells become more than 31. HO list is created using RNC algorithm in the final stage some of the neighbours will randomly be removed.

Delete unnecessary neighbours. Improve dominance.

NetAct OSS

CM OPERATIONS MANAGER

CM Operations Manager is for uploading managed objects, exporting actual configurations, import & export radio network plans, prepare & delete plans, pre-activate & activate planned configurations to network.

Select CM Operations Manager under Configuration Categories

CM EDITOR

CM Editor is used to view actual radio network configuration, create, modify & delete plans, create templates, create managed objects, edit & mass edit parameter values of managed objects.

CM ANALYSER

CM Analyser can be used to perform checks or discrepancies on actual or planned radio network parameters to ensure parameters are defined according to consistency rules

REPORTING SUITES

Reporting Suites provide ready-made reports for analyzing the performance of the network. The reports are based on collected PM data and Nokia-defined KPIs and provide information on traffic, mobility, resources, signaling, security, subscriber, quality, charging, and Quality of Service.

REPORTING SUITES

1

2

3

Select needed RAN report

Sample RAN report

Reporting Suites Sample

RAN

REPORTS

REPORT BUILDER

Report Builder is a reporting tool for post-processing & visualization of data. It is used to for customized reporting & has been designed for creating and running a wide range of various reports on the performance data. The results are presented in graphical & excel format.

Reports are represented in both excel file and graphical

views.

Report Builder Output

APPLICATION LAUNCHER

RNW MEASUREMENT MANAGEMENT

It means that measurement is activated

RNW ONLINE MONITORING

RNW Online Monitoring is used to view Cell Load

Click Start to view counters on a cell

CALL FLOW

AMR MOCMS BTS CS_CNRNC

RRC:RRC CONNECTION REQUEST

NBAP:RADIO LINK SETUP REQUEST

NBAP:RADIO LINK SETUP RESPONSE

RRC:RRC CONNECTION SETUP

NBAP:SYNCHRONIZATION INDICATION

RRC:CONNECTION SETUP COMPLETE

RRC:INITIAL DIRECT TRANSFER (CM Service Request)

RANAP:INITIAL UE MESSAGE(CM Service Request)

RANAP:RAB ASSIGNMENT REQUEST

Call established

L1 synchronisation

AAL2SIG: ERQ

AAL2SIG: ECF

RANAP: DIRECT TRANSFER(CM Service Accept)RRC: DOWNLINK DIRECT TRANSFER (CM Service Accept)

RRC: UPLINK DIRECT TRANSFER (Setup)RANAP: DIRECT TRANSFER

(Setup)

RANAP: DIRECT TRANSFER(Call Proceeding)

RRC: DOWNLINK DIRECT TRANSFER (Call Proceeding)

NBAP:RADIO LINK RECONFIGURATION PREPARE

NBAP:RADIO LINK RECONFIGURATION READY

AAL2SIG: ERQ

AAL2SIG: ECFAAL2SIG: ERQ

AAL2SIG: ECF

NBAP:RADIO LINK RECONFIGURATION COMMIT

RRC: RADIO BEARER SETUP

RRC: RADIO BEARER SETUP COMPLETERANAP:RAB ASSIGNMENT RESPONSE

RANAP: DIRECT TRANSFER(Alerting)RRC: DOWNLINK DIRECT TRANSFER (Alerting)

RRC: UPLINK DIRECT TRANSFER (Connect)RANAP: DIRECT TRANSFER

(Connect)

(Connect Acknowledge)RRC: DOWNLINK DIRECT TRANSFER (Connect Acknowledge)RANAP: DIRECT TRANSFER

AMR MTCMS BTS CS_CNRNC







RRC:INITIAL DIRECT TRANSFER (Paging response)

RANAP:INITIAL UE MESSAGE(Paging response)


Call established

L1 synchronisation

AAL2SIG: ERQ

AAL2SIG: ECF

RRC: DOWNLINK DIRECT TRANSFER (Setup)

RRC: UPLINK DIRECT TRANSFER (Call confirmed)

RANAP: DIRECT TRANSFER(Setup)

RANAP: DIRECT TRANSFER(Call confirmed)



AAL2SIG: ERQ

AAL2SIG: ECF

AAL2SIG: ERQ

AAL2SIG: ECF



RRC: RADIO BEARER SETUP COMPLETE

RANAP:RAB ASSIGNMENT RESPONSE

RANAP: DIRECT TRANSFER(Alerting)

RRC: UPLINK DIRECT TRANSFER (Alerting)

RRC: DOWNLINK DIRECT TRANSFER (Connect)RANAP: DIRECT TRANSFER

(Connect)

(Connect Acknowledge)

RRC: UPLINK DIRECT TRANSFER (Connect Acknowledge)

RANAP: DIRECT TRANSFER

RANAP:PAGINGRRC:PAGING TYPE 1

PS DATAMS BTS PS_CNRNC







RRC:INITIAL DIRECT TRANSFER (Attach Request)

RANAP:INITIAL UE MESSAGE(Attach Request)


Uplink and downlink data transfer

L1 synchronisation

AAL2SIG: ERQ

AAL2SIG: ECF

RANAP: DIRECT TRANSFER

(Attach Accept)RRC: DOWNLINK DIRECT TRANSFER (Attach Accept)

RRC: UPLINK DIRECT TRANSFER (SM:Activate PDP Context request)

RANAP: DIRECT TRANSFER(SM: Activate PDP Context request)

RANAP: DIRECT TRANSFER(SM: Activate PDP Context accept)

RRC: DOWNLINK DIRECT TRANSFER (SM: Activate PDP Context Accept)



AAL2SIG: ERQ

AAL2SIG: ECF



RRC: RADIO BEARER SETUP COMPLETE

RANAP:RAB ASSIGNMENT RESPONSE

RRC: TRANSPORT CHANNEL RECONFIGURATION

RRC: MEASUREMENT REPORT

RRC: TRANSPORT CHANNEL RECONFIGURATION COMPLETE

RRC: DOWNLINK DIRECT TRANSFER (Attach Complete)

RANAP: DIRECT TRANSFER(Attach Complete)

SHO

UE BTS RNC

Handover tresholds fulfilled (MEHO)- Event 1A is triggered

RRC: Active Set Update Request

RRC: Measurement Report

NBAP: Radio Link Addition Response

NBAP: Radio Link Addition Request

RRC: Active Set Update Complete

UE BTS RNC

Handover tresholds fulfilled (MEHO)- Event 1B is triggered


RRC Measurement Report


NBAP: Radio Link Deletion Request

NBAP: Radio Link Deletion Response

EVENT 1a EVENT 1b

SHOEVENT 1c

UE BTS RNC

Handover tresholds fulfilled (MEHO)- Event 1C is triggered


RRC: Measurement Report

NBAP:Radio Link Addition Response

NBAP: Radio Link Addition Request


NBAP: Radio Link Deletion Request

NBAP: Radio Link Deletion Response

ISHO (VOICE 3G -> 2G)

ISHO (PS 3G -> 2G)

THANK YOU

3G Optimization Documents

Documents

Transcript of 3G Optimization Documents