optimization introduction.ppt

7/30/2019 Optimization Introduction.ppt

1/83

Optimization: Introduction

Prepared by Performance Team


Episode: I


2/83



Contents

Global indicators

Typical Radio Network Problem

Coverage Problem Interference problem

Unbalanced power budget problem

Congestion problem

Problems and responsibleparties


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Global Indicators

4 stages of a call establishment, 2

stages (1&2) for location update :

1. Radio link establishment Phase2. SDCCH Phase

then only Circuit Switch call

3. TCH assignment Phase

4. Alerting/Connect Phase


4/83



Global

Indicators

MS BTS BSC MSC

(RACH)

CHANNEL REQUESTCHANNEL REQUIRED

CHANNEL ACTIVATION (SDCCH)

CHANNEL ACTIVATION ACK

IMMEDIATE ASSIGN COMMEND

(AGCH)

IMMEDIATE ASSIGN

(SDCCH)

SABM (L3 info)

(SDCCH)

UA (L3 info)

ESTABLISH IND (L3 info)CR (Connection Request: L3

INFO)

CC (Connection Complete)

AUTHENTICATION REQUEST

AUTHENTICATION RESPONSE

CIPHERING MODE COMMAND

CIPHERING MODE COMPLETE

SETUP

CALL PROCEEDING

LOCATION UPDATE REQUEST (IN CASE OF LU)

LOCATION UPDATE ACCEPT (IN CASE OF LU)

TMSI REALLOCATION COMPLETE (IN CASE OF LU)

ASSIGNMENT REQUEST

PHYSICAL CONTEXT REQUEST

PHYSICAL CONTEXT CONFIRM

CHANNEL ACTIVATION (TCH) TCH allocation

CHANNEL ALLOCATION ACK.

(SDCCH)

ASSIGNMENT COMMEND

SABM

UA (L3 info)TCHESTABLISH INDICATION

ASSIGNMENT COMPLETE

ASSIGNMENT COMPLETE

ALERTING

CONNECT

CONNECT ACK.

CONVERSATION

Mobile Originated Call (MOC)

1. Radio Link

EstablishmentPhase

2. SDCCH Phase

3. TCH Assignment Phase

4. Alert and Connect Phase


5/83



Global Indicators

Handover: Intracell HOMS BTS BSC MSC

Measurement ReportMEASUREMENT RESULT

PHYSICAL CONTEXT REQUEST (old channel)

PHYSICAL CONTEXT CONFIRM (old channel)

CHANNEL ACTIVATION (new channel)

(SDCCH)

SABM (L3 info)

(SDCCH)

UA (L3 info)

ESTABLISH IND (new channel)

CHANNEL ACTIVATION ACK (new channel)

ASSIGNMENT COMMEND (old channel)ASSIGNMENT CMD

ASSIGNMENT CMP ESTABLISH COMPLETE (new channel)

HANDOVER PERFORMED

RF CHANNEL RELEASE (old channel)

RF CHANNEL RELEASE ACK (old channel)


6/83



Global Indicators

Handover: Internal HOMS

Serving

CellBSC MSC

Meas. Report

MEASUREMENT RESULT

HANDOVER COMMAND

HANDOVER ACCESS

CHANNEL ACTIVATION

SABM (L3 info)

UA (L3 info)

HANDOVER PERFORMED

Target

Cell

CHANNEL ACTIVATION ACK.

HO CMD

HANDOVER DETECTION

PHYSICAL INFORMATION

ESTABLISH INDICATION

HANDOVER COMPLETE HO CMP


7/83



Global Indicators

Handover: External HOMS Serving Cell MSCBSC

MEAS_REPORT

MEAS_RESULT

HO_COMMAND

HO_ACCESS

SABM (L3 info)

UA (L3 info)

Target Cell

HO_REQUIRED

HO_DETECTION

ESTABLISH_INDICATION

HO_COMPLETE

Release of TCH

BSC MS

CR (HO_REQUEST)

CC CHANNEL_ACTIVATION

CHANNEL_ACT_ACK

HO_REQUEST_ACK

(HO_COMMAND)

HO_ACCESSHO_DETECTION

PHYSICAL_INFO

HO_COMPLETE

CLEAR_COMMANDCause: HO_SUCCESSFUL


8/83



Global Indicators

Important indicators : SDCCH Congestion

SDCCH Assignment Failure

SDCCH Drop

TCH Assignment Failure

Call Drop

Call Setup Success

Call Success

Outgoing Handover

Incoming Handover

Handover Causes Distribution(Better/Level/Quality/MCHO/...)


9/83



Global Indicators

SDCCH Congestion :MS BTS BSC

(RACH)



(AGCH)

IMM. ASS. REJECT (OPTION)

NO FREE SDCCH !!!

MS will try to request again for a certain of times

If still failures, it will

Wait for a certain of time without reception of

immediate_assign message

Try an automatic cell_reselection in case of

LU (no impact for subscriber)

Notify a network error for call establishment

(call setup failure for subscriber)


10/83



Global Indicators

SDCCH Congestion : Main causes

Too much SDCCH normal traffic for cell

SDCCH design

Logical cell design, extra TRX, new site

Common Transport Effect Difficult to avoid for small cells

LA border at crowded area

Abnormal SDCCH traffic

phantom channel requests

Inadequate LAC design, causing too much

LU

Redesign LAC

Problem with neighbor cells belong to other

LAC


11/83



Global Indicators

SDCCH RF Failure : main causes

Real radio problems

Unbalanced power budget

Bad coverage

Interference

In case of radio failure, MS will retry as in case of

SDCCH congestion

MS BTS BSC MSC

(RACH)


CHANNEL ACTIVATION (SDCCH)

CHANNEL ACTIVATION ACK


(AGCH)

IMMEDIATE ASSIGN

??? no message from MS


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Global Indicators

SDCCH RF Failure : main causes

Phantom/Ghost/Spurious/Dummy...RACH

Channel request received but not sent : 3

causes

1. Noise decoding

2. Reception of channel request sent to a

neighbor cell

3. Reception of HO_ACCESS sent to aneighbor cell


13/83



Global Indicators

SDCCH RF Failure : main causes : Phantom RACH

1. Noise decoding

GSM 05.05: 0.02% of RACH Frame can be

decoded without error without real input signal

(this extra-load has no impact for the system) BCCH not combined: 156 phantom

RACCH/hour (or about 0.08 Erlang SDCCH)

BCCH combined: 83 phantom RACH/hour

During period with low real traffic (night), high

rate of phantom RACH

No impact for subscriber

But impact on indicator SDCCH RF access

failure


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Global Indicators


2. Channel request sent to neighbor cell

Subscriber is not impacted ( the real transactionis performed elsewhere)

But SDCCH RF access failure is impacted

Usual radio planning rules are sufficient to avoidthe trouble (BSIC and BCCH frequency plan)


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Global Indicators


3. Channel request due to handover

During HO, first message sent to target cell is

HO access which is an access burst like

channel_request If received on BCCH, can be understood as a

channel-request

This case is the most dangerous

MS is sending usually a sequence of HO

Access message, every frame !!

In some cases, this can create phantom RACH

if the frequency of TCH is co- or adjacent to one

of the interfered BCCH

Can block very easily SDCCH


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Global Indicators

SDCCH Drop :

Loss of connection during SDCCH phase =

SDCCH Drop

3 causes of SDCCH drop

Radio problems when connected on SDCCH

BSS problems (Transcoder and Internal BSS

problems)

Call lost during an SDCCH HO (handover

failure without reversion to old channel)

BTS BSC

CONNECTION FAILURE INDICATION

(cause : radio link failure)

Radio connection loss

CLEAR REQUEST

(cause : radio interface failure)

MSCMS


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Global Indicators

TCHassign failure : Congestion

4 sub causes of congestion

A: Queuing is not allowed

B: Queue is full

C: T11 expired

D: RTCH requests is de-queued due to a

high priority (i.e. emergency call) request to

be queued

BTS BSC

no RTCH available on request cellASSIGNMENT FAILURE

cause No Radio Resources Available

MS

ASSIGNMNET REQUEST

MS


18/83

Optimization: IntroductionPrepared by Performance Team

Global Indicators

TCHassign failure : Radio

MS BTS BSC MSC

ASSIGNMENT REQUEST





(SDCCH)

ASSIGNMENT COMMEND

TCHRadio Problem

ASSIGNMENT FAILURE

Radio interface failure


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Global Indicators

TCHassign failure : BSS

MS BTS BSC MSC

ASSIGNMENT REQUEST





(SDCCH)

ASSIGNMENT COMMEND

BSS Problem


20/83


Global Indicators

TCHDrop : Radio

MS BTS BSC


(cause : radio link failure)

Radio Problem

CLEAR REQUEST

(cause : radio interface failure)

MSC

Alerting Connection Phase or Communication : at any time


21/83


Global Indicators

TCHDrop : BSS

Transcoder reported problem

Abis transmission Problem: Microwave,Microwave antenna, fixed line problems.

Problem on TC boards (hardware problem)

MS BTS BSC


(Remote transcoder failure)

Radio Problem

CLEAR REQUEST(Equipment failure)

MSC



22/83


Global Indicators

TCHDrop : BSS

Other BSS problem (excluding TC)

Hardware or software failures of BSC/BTS

MS BTS BSC

BSS problem CLEAR REQUESTO&M intervention

Radio interface failure

MSC



23/83


Global Indicators

TCHDrop : Handover

Call drop during handover

MS BTS BSC

HO failure without reversion CLEAR REQUESTRadio interface message failure

MSC



24/83


Global Indicators

Intracell HO Failures

Congestion

Reversion to Old Channel (ROC)

Drop Radio

BSS problem


25/83


Global Indicators

Intracell HO Failures : Congestion

MSServing

BTSBSC MSC

Measurement ReportMEASUREMENT RESULT

No Free TCH/SDCCH

Intracell HO Failures : Drop

MS BTS BSC MSC

ASSIGNMENT CMD ASSIGNMENT COMMAND (old channel)

Release of old and new channels


26/83


Global Indicators

Intracell HO Failures : Reversion to Old Channel

Serving

BTS

Serving

BSC MSC

SABM (new channel)

UA (new channel)

ESTABLISH IND (new channel)

ASSIGNMENT COMMEND (old channel)ASSIGNMENT CMD

ESTABLISH INDICATION (old channel)

RF CHANNEL RELEASE (old channel)

RF CHANNEL RELEASE ACK (old channel)

MS

XSABM (new channel)

UA (new channel)X

SABM (old channel)

UA (old channel)

ASSIGNMENT FAIL ASSIGNMNENT FAILURE


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Global Indicators

Internal HO Failures : Reversion to Old ChannelServing

CellBSC MSC

HANDOVER COMMAND

HANDOVER ACCESS

SABM (L3 info)

UA (L3 info)

Target

Cell

HO CMD

HANDOVER DETECTION

PHYSICAL INFORMATION


HANDOVER COMPLETE

MS

X

SABM

UM

HO FAILURE


HO FAILURE

Release of new channel


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Global Indicators

Internal HO Failures : Drop

MSServing

CellBSC MSC

Meas. Report

MEASUREMENT RESULT

HANDOVER COMMAND

CHANNEL ACTIVATION

Clear_request

Target

Cell

CHANNEL ACTIVATION ACK.

HO CMD

Clear_command

Release of old and new TCH


29/83


Global Indicators

External HO Failures : Congestion

MS Serving Cell MSCBSC

MEAS_REPORT

MEAS_RESULT

HO_REQUIRED_REJECT

Target Cell

HO_REQUIRED

BSC MS

CR (HO_REQUEST)

HO_FAILURE

Cause: no radio resource available

External HO Failures : A int. CongestionMS Serving Cell MSCBSC

MEAS_REPORT

MEAS_RESULT

HO_REQUIRED_REJECT

Target Cell

HO_REQUIRED

BSC MS

CR (HO_REQUEST)

HO_FAILURE

Cause: terrestrial circuit already allocated

Requested trerestrial resource unavailable

BSS not equipped


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Global Indicators

External HO Failures : Reversion to Old Channel


MEAS_REPORT

MEAS_RESULT

HO_COMMAND

HO_ACCESS

Target Cell

HO_REQUIRED

Release connection

BSC MS

CR (HO_REQUEST)


CHANNEL_ACT_ACK

HO_REQUEST_ACK

(HO_COMMAND)

CLEAR_COMMAND

XHO_ACCESS

XSABM

UAESTABLISH_INDICATION

HO_FAILURE(reversion to pld channel)

Radio interface fail:

Reversion to old channel


31/83


Global Indicators

External HO Failures : Drop


MEAS_REPORT

MEAS_RESULT

HO_COMMAND

HO_ACCESS

Target Cell

HO_REQUIRED

Release connection

BSC MS

CR (HO_REQUEST)


CHANNEL_ACT_ACK

HO_REQUEST_ACK

(HO_COMMAND)

CLEAR_COMMAND

XHO_ACCESS

X

Radio interface fail

SABMX

SABMX

SABMX


32/83


Global Indicators

Important indicators : SDCCH Congestion Rate

Definition: Rate of SDCCH not allocated duringradio link establishment procedure due tocongestion on Air interface

Comment: Check SDCCH Erlang : if not critical,SDCCH availability/allocation problem, or HOaccess on a nearby cell side effect orinterference on the carrier handling SDCCH (thelast 2 can lead to high rate if Phantom RACH


33/83


Global Indicators

Important indicators : SDCCH Assign Failure Rate

Definition: Rate of SDCCH seizure failed (BSSproblem, radio access problem) during radio link

establishment procedure over the total amountof SDCCH seizure requests during radio linkestablishment procedure


34/83


Global Indicators

Important indicators : SDCCH Drop Rate

Definition: Rate of dropped SDCCH (SDCCH

is established for any transaction OC, TC,LU, ...)

Comment: Drop radio + Drop HO + DropBSS


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Optimization: Introduction Prepared by Performance Team

Global Indicators

Important indicators : TCH Assign Failure/Congestion Rate

Definition:

TCH Assign Failure Rate: Rate of RTCHseizure failed (BSS problem, radio access

problem) during normal assignment procedureover the total amount or RTCH request fornormal assignment procedure

TCH Assign Congestion Rate: Rate of RTCHnot allocated during normal assignment due tocongestion on Air interface


36/83


Global Indicators

Important indicators : Call Drop Rate

Definition: Rate of dropped calls over the totalamount of calls with a successful end

Comment: Drop BSS + Drop radio + Drop HO

TCH drop occurring after successfulassignment but before speech connection areconsidered as call drop even if from customerspoint of view it is a call setup failure


37/83


Global Indicators

Important indicators : Call Setup Success Rate

Definition: Rate of calls going until TCH successfulassignment, that is not interrupted by SDCCH drop

neither by assignment failures Comment:

Subscriber : call not established at the firstattempt


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Global Indicators

Important indicators : Call Success Rate (BSS view)

Definition: Rate of calls going until normal release,that is not interrupted by SDCCH drop neither by

assignment failures and neither by CALL DROP Comment:

1 call success =

1 call successfully established

Without any call drop


39/83


Global Indicators

Important indicators : Outgoing Handover Success Rate

Definition: Rate of outgoing external and internal

intercell TCH and SDCCH handover successesover the total amount of outgoing external andinternal intercell TCH and SDCCH handoverrequired


40/83


Global Indicators

Important indicators : Incoming Handover Success Rate

Definition: Rate of incoming external and internalintercell TCH and SDCCH handover successes

over the total amount of outgoing external andinternal intercell TCH and SDCCH handoverrequests


41/83


Global Indicators

Important indicators : Handover Cause Distribution

Definition: Distribution of Handover requests by cause:UL Qual, UL Lev, DL Qual, DL Lev, Better Cell, ULInterference, DL Interference, Interband, Micro cellsHO, Concentric cell causes


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Typical Radio Problems

i. Coverage Problem

ii. Interference problem

iii. Unbalanced power budget

problem

iv. Congestion problem


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Typical Radio Problems

Several sources of information for

optimization

QoS indicators

Coverage predictions

Customer complaints

Drive tests

Abis/A traces Other teams information (NSS statistics)


44/83


i. Coverage Problem

Bad coverage :

A network facing coverage problems has

badRxLev. RxQual can be bad at thesame time.

Sometimes the RxLev can look OK on the

street (i.e. from drivetest) but coverage

inside the buildings can be poor due tobuilding losses. Building losses can

range from 10 to 30 dB or more.


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i. Coverage Problem

Indications : Customers complain about dropped calls

and/orNo Network

OMC QoS indicators

TCH failure rate Call drop rate

Low proportion of better cell HO

High rate of DL & UL Level HO (possiblyalso DL/UL quality HO)

A interface indicators

High rate of Clear Request message, causeradio interface failure

Drive Test

Poor RxLev ( < -95 dBm)


46/83


i. Coverage Problem

Investigation and Optimization : If actual coverage is not the one

predicted by planning tool Check antenna system (azimuth, crossed

sector?)

Check prediction in the tool (EIRP, ClutterType, Obstructing building?). Most of thetime the prediction will be incorrect, as it isonly a computer simulation

Increase or decrease antenna down-tilt

Check BTS output power set in the OMC-R(BS_TXPWR_MAX: should always be setat 0)


47/83


i. Coverage Problem

Investigation and Optimization :

If actual coverage OK compared to

predicted ones

Improve coverage by adding Macro site,Microcell site (Border or Shadow areas), or

IBC site (In-building coverage).

Use parameter setting ex. Bi-layer

Handover.


48/83


i. Coverage Problem

Example on thresholds :

From Drive test or Abis Interface

RxLev < -95 dBm

and

RxQual > 4


49/83


ii. Interference Problem

Interference :

A network facing interferencesproblems presents goodRxLev

and bad RxQual in the same

time on some areas.


50/83



Indications : Customers complain about bad speech

quality (noisy calls) and/or call drops

OMC QoS indicators

SDCCH/TCH Drop

Low proportion of better cell HO

High rate of DL/UL quality HO andinterference HO

Low HO success rate


High rate of Clear Request message, causeradio interface failure

Drive Test

RxQual > 4 with RxLev > -85 dBm


51/83



Typical causes :

GSM interferences

Co-channeladjacent

Non GSM Interference

Other Mobile Network

Other RF sources


52/83



Co-channel interference :

C/I = Carrier-to-interference ratio

+12 dB is taken into account forAlcatel ( +9 dB according to GSM

standard) (i.e. interference can be

9 12 dB weaker than serving

cell to cause poor RxQual).

Level

Frequencyf(cell1)=f(cell2)

+12 dB


53/83




Indications

Downlink and/or Uplink Interference

High rate of quality handover, call drop, andcall setup failure

Investigation

Drive test analysis

Lumpini: Co-channel checking

Check prediction to verify which cell could be

causing the interference

Frequency plan C/I < 12 dB


54/83




Optimization

Antenna optimization Change frequency

Reduce BTS power (not an option in TA

Orange network)

Concentric cell


55/83



Co-channel interference: Optimization: Concentric cell

Concept Conclusion from Alcatel trial onOranges network (Suburbanarea)

Concentric cell is difficult tooptimize, and hence is rarelyused in the network today.


56/83



Adjacent channel interference : C/A = Carrier-to-adjacent ratio

-6 dB is taken into account for Alcatel ( -9 dBaccording to GSM standard).

Level

Frequencyf(cell2)=f(cell1)+1

-6 dB

f(cell1) f(cell2)

E.g.

f(cell1)= Ch.573f(cell2)= Ch.574


57/83



Adjacent channel interference :

Indications

Downlink and/or Uplink Interference

High rate of quality handover, call drop, and call

failure Investigation

Adjacent HO statistics (if they are defined as

neighbors). If they often handover, then adjacent

channel interference could be a problem.

Drive test analysis Lumpini: Adjacent channel checking

Cell coverage prediction

Frequency plan C/I < -6 dB


58/83



Adjacent channel interference :

Optimization

Antenna optimization Change frequency

Reduce BTS power (not an option in TA

Orange network)

Concentric cell


59/83



Interference : Forced Directed Retry MS should connect to Cell_A, but no

TCH available.

MS connects to Cell_B with forced

directed retry

MS is emitting at high level (due to long

distance from Cell_B)

UL interference for Cell_C

Cell_B is emitting at high level (if DL PC

is being used)

DL interference at Cell_C MS is serving on the 2nd or 3rd best

server: increases chances of

interference problem (poor C/I & C/A asC is lower)

Cell_B: Ch.573

Cell_C: Ch.572

Cell_A: Ch.569


60/83



Non GSM interference :

Other mobile network Inter-modulation with GSM BTS/MS receiver

Other RF interferers Radar

Shop anti-theft mechanism

Medical devices

Other man-made radio transmission

Illegal usage of GSM frequencies (e.g. illegalimported devices, illegal usage of otherorganization, ...)

...


61/83


iii. Unbalance power budget Problem

A cell facing unbalanced power budget problemspresents a too high path-loss difference betweenUL and DL (often DL>UL)

Lower Rx diversity gain of cross polarizedantenna in rural area compared to dense area

Crossed feeders

Traffic not directly in boresight of antenna, wherecross-polar discrimination is lower

Loose connectors

Faulty antenna, feeder, TMA

Rule : try to have delta as small as possible toavoid access network possible only in 1 direction(usually BTS->MS : OK and MS->BTS : NOK),i.e. uplink limited


62/83


Indicators : OMC QoS indicators

High ratio of Uplink level Handover cause

Low incoming HO success rate

DL level looks OK for HO, but UL is too weakwhen HO is attempted

Degradation of TCH failures and OC call dropindicators


High rate of Clear Request message, cause

radio interface failure O&M Alarms

Voltage Standing Wave Ratio (VSWR)

TMA



63/83


Investigation :Abis monitoring:

ABS(delta Path loss) > 10

Check if problem is occurring for 1 TRX orall.

ABS(delta path loss) = ABS(UL Path loss

DLPath loss)

UL Path loss = MS transmitted powermeasured received UL level

DL Path loss = BTS transmitted powercombiner loss measured received DL level

Large difference between uplink and downlinklevel triggered HO.

Use PM observation counter (in OMC-R)

RT11



64/83


Optimization : This equipment

should be checked

TRX types (MP, HP)Antennas or common RF components,

TMA (common to all TRX of the BTS)

TRX RF cables, LNA



65/83


iv. TCH congestion Problem

TCH Congestion :

TCH Congestion rate (TCHAssignment Phase) is too high(more than 2%)

Rule : try to meet the offered

traffic (asked by users) byproviding the right number ofresources (TRX extension)


66/83



Indications : Customers complain about Network busy

OMC QoS indicators High TCH Congestion rate, RTCH

Assignment fail-Congestion

Low incoming Intra/Inter BSC HO successrate (no TCH available)

High Directed Retry rate or CongestionRelief (Motorola) if activated

A interface indicators: BSS Congestionfailure in OC

High rate of Assignment Failure message,No radio resource available

Drive Test

Handover to better cell is slow, or neveroccurs


67/83



Optimization :

Special events :

Foreseeable: football match, important

meeting, Exhibition, etc. Add some extra TRXs

Add special mobile BTSs (Cell onWheel)

Activate HR (may not always be

possible due to BSC capacitylimitations)

Not foreseeable: car crash on thehighway


68/83



Optimization :

Daily periodic problems : At busy hour:

Hardware solution :

Add TRX(s)

Concentric cell

New site

Optimize cell boundaries (i.e.

antenna optimization) to sharetraffic with surrounding cells


69/83



Optimization :

Daily periodic problems : At busy hour:

Software solution :

Directed Retry

Traffic Handover

Half Rate (Alcatel)

Congestion Relief (Motorola)

Flow control (Motorola)


70/83


Problems and responsible parties

Coverage problem : If the measured RxLev does not

match the prediction

Check the prediction, check panoramic

pictures for obstructions Field Operation team to check physical

configuration (tilt, azimuth, antenna

height...). Also check for faults in the

antenna system (VSWR, sweep

antennas, DTF test, etc.) If Field Operation find no problem,

antenna optimization may be required

(if necessary)


71/83



Coverage problem :

If the field reality match the

prediction

RF team to add new sites (tri-sector,

micro cellular, indoor cells) to improve

poor/no coverage area (Optimizer

requests for some new sites to RF

team regarding to the drive test result)


72/83


Interference problem :

Optimization team to identify the

interference source and request Spectrum

Management team to correct it in case of

internal source (new frequency planning...)

Unbalanced power budget problem :

Field Operation team to check the impacted

BTS (Antenna, TMA, RF cables, LNA,

diversity system...) according to requestfrom Optimizer.



73/83


TCH Congestion problem :

Regional RF to request TRX

expansion.



74/83



Episode: II

O C


75/83


Organization

Alcatel KPIs

Optimization Workflow

Optimization Process

Optimization Tools

Report Links

Optimization: Contents

O i i i O i i


76/83


Initial First Last Initial First Last

50 Mr. Xavier Lepez ANTE & Performance Mgr. 2912 4995 09-100-6680

51Ms. Sanida Sengyai .. Administrator 0723 5174 0 9100 6677

52 Mr. Rob Werner Engineering Mgr. 1086 5152 0 9100 6466

2EN1110 53 Mr. Andrew Barton Motorola Interface 0570 5151 0 9100 6424

54 VacantBKK RF Interface

55Mr. Prasong Kullama Alcatel Interface 0058 4986 0 9100 6432

56Mr. Ferri Tafreshi Spectrum Management

0991 5150 0 9100 6426

57Mr. Aekkorn Poomseetana Spectrum Eng. 0239 5149 0 9100 6427

58 Ms. Lilly Sarujikumjornwatana .. Spectrum Eng. 4022 5093 0 6501 0054

59 Vacant Spectrum Eng.



62 Mr. Nazli Abdullah Technical Support Mgr. 0609 5153 0 9100 6423

63 Ms. Aphiwan Malaithong .. Software Eng. 1846 5143 0 9100 6428

64 Mr. Pnot Limpiphiphatn Software Eng. 3028 5219 0 9100 6209

65 Vacant Software Eng.

66 Ms. Vorrachitt Veerachitt .. Frequency Planner (Cont rac tor) - 4027 0 6622 2907

67 Mr. Warakorn Angkaphaiboonsakul Frequency Planner (Cont rac tor) - 4025 0 1833 4452

68 Mr. S irasith Phanupornprapong Frequency Planner (Cont rac tor) - 4026 0 1802 211469 Mr. Stephane Tella Performance Mgr. - 5111 0 9100 6262

70 Mr. Michael Powell Optimization Mgr. BKK 1045 5189 0 9100 6681

71 Mr. Atinan Tumsatan Optimization Eng. BKK 1872 4981 0 9100 66842EN1110 72 Ms. Thitinun Limpaphinun .. Optimization Eng. BKK 2448 4983 0 9100 6691

73Mr. Supakorn Chumnongrark Optimization Eng. BKK

0437 4985 0 9100 6682

74Ms. Sutthida Dullaya - anukit .. Optimization Eng. BKK

2244 4984 0 9100 6685

75Mr. Phairoj Thamrongthanyawong Optimization Eng. BKK

4005 5196 0 6502 0053

76Mr. Boonyarith Saovapakiran Optimization Eng. BKK

4006 5027 0 6502 0052

77 VacantOptimization Eng. BKK

78Vacant Optimization Eng. BKK




82Mr. Pongpunt Thanddokmai Drive Test Technician 2235 5178 0 9100 6686

83Mr. Somyos Tharalerd Drive Test Technician 2388 5178 0 9100 6688

84Mr. Prasit Jeayang Drive Test Technician 2445 5177 0 9100 6689

85Mr. Nikhom Lertwilai Drive Test Technician 2490 5177 0 9100 6690

86Mr. Laurent Hemonet Optimization Mgr Alcatel 3655 5028 0 9100 6694

87 Mr. Kachaprid Booramyakorn Optimization Eng. Alcatel 2533 5173 0 9100 6692

88 Mr. Sarasit Wichaikhtkha Optimization Eng. Alcatel 2376 5177 0 9100 6687

89 Vacant Optimization Eng. Alcatel



92 Ms. Linda Renou Optimization Mgr Motorola - 5064 0 9100 6696

93 Mr. Wasan Taweesin Optimization Eng. Motorola 0715 4982 0 9100 6683

94 Mr. Sant iphap Utta Optimization Eng. Motorola 3483 5021 0 9100 66932EN1110 95 Ms. Suratsawadee Kongsettakhonchai .. Optimization Eng. Motorola 3737 5186 0 9100 6695

96 Vacant Optimization Eng. Motorola

97 Vacant Optimization Eng. Motorola

98 Mr. Renaud Lelong BSS Eng. 3658 5144 0 9100 6555

99 Mr. Kittisak Kiatmonkong BSS Eng. 3972 5156 0 6502 0051

100 Vacant BSS Eng.

Ext.Orange

MobileID No.No.

Name In English Name in ThaiPosition

Access Eng

&

Performance

Access Eng

&

Performance

Access Eng&

Performance

Div/Dept

Optimization: Organization

Al t l KPI N t k St ti ti


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INDICATORS OBJECTIVE FATand Phase 2

RXQUAL90

% of call

samples below or

equal to RXQUAL

CSSR >=98

%

TCH Blocking

Rate


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Service Area

% of Samples above

or equal to

threshold ("Valid

Measurement Sample

Percentage")

Minimum Radio

Coverage Field

Strength Acceptance

Threshold on Street

Level

Dense Urban98

% -75

dBm

Urban96

% -82

dBm

Suburban93

% -87

dBm

Rural93

% -97

dBm

Highways 93% - 87 dBm

Alcatel KPIs : Drivetest Statistics


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Optimization : Workflow

Check Data

Alerts Trouble Ticket (TT)

Weekly Dashboard

BGW Lists

CAT Status

Daily Dashboard

Worst Cell Lists

Prioritization List

Check Frequency

Check Neighbors

Check Parameters

Neighbors Analysis

The following are activities of one Radio Network

Optimization Engineer (RNOE) managing the areas


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Optimization : Workflow Neighbors for new sites

Traffic Study Analysis

Antenna Optimization

Drive Test Analysis &

Problem Log (Potatoes)

Drive Test Reports

CAT Drive Tests

CAT Reports

A/Abis Trace Analysis

Customer Complaints

Meeting

Special Studies and

Requests

Documentation

The following activities are not weekly activities


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Optimization : Process Optimization Tasks

Cell-by-cell parameter change/Massiveparameter change

Neighbor addition/deletion

Correction Tasks

Cell-by-cell parameter change/Massiveparameter change

Neighbor addition/deletion

Spectrum Management Tasks

Frequency change request

Retune request

The following are processes based on Remedy


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Optimization : Tools RNO : Radio Network

Optimization tool

(A956)

Drive Test Tools TEMS

GREYSON

ACTIX (post process

tool)

MapInfo

Lunpini

Nbclient

The following are some tools used by an Optimizer

OMC-R : Operationand MaintenanceCenter-Radio

NPA : NetworkPerformance Analyzer(A985)

INMS

ASSET

Net Monitor


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Report Links G:\Working Document\Net Ops\Network

Performance\@_THAI\BGW_&_Top20

G:\Working Document\Net Ops\Network

Performance\@_THAI\Weekly_Dashboard

G:\Working Document\Net Ops\Network

Performance\@_THAI\Daily_Dashboard_&_Alerts

optimization introduction.ppt

Documents