TrueMove_Optimization

Optimization: Introduction Prepared by Performance Team

Optimization: Introduction

Episode: I


Contents

Global indicators

Typical Radio Network Problem

Coverage Problem

Interference problem

Unbalanced power budget problem

Congestion problem

Problems and responsible parties


Global Indicators

4 stages of a call establishment, 2

stages (1&2) for location update :

1. Radio link establishment Phase

2. SDCCH Phase

then only “Circuit Switch call”

3. TCH assignment Phase

4. Alerting/Connect Phase


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

Establishment Phase

2. SDCCH Phase

3. TCH Assignment Phase

4. Alert and Connect Phase


Global Indicators

Handover : Intracell HO MS 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)


Global Indicators

Handover : Internal HO

MSServing

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


Global Indicators

Handover : External HO MS 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_ACCESS

HO_DETECTION

PHYSICAL_INFO

HO_COMPLETE

CLEAR_COMMANDCause: HO_SUCCESSFUL


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/...)


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)


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


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


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 a

neighbor cell


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


Global Indicators


2. Channel request sent to neighbor cell

Subscriber is not impacted ( the real transaction

is performed elsewhere)

But SDCCH RF access failure is impacted

Usual radio planning rules are sufficient to avoid

the trouble (BSIC and BCCH frequency plan)


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


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


Global Indicators

TCH assign 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

MSC


Global Indicators

TCH assign failure : Radio

MS BTS BSC MSC

ASSIGNMENT REQUEST





(SDCCH)

ASSIGNMENT COMMEND

TCHRadio Problem

ASSIGNMENT FAILURE

Radio interface failure


Global Indicators

TCH assign failure : BSS

MS BTS BSC MSC

ASSIGNMENT REQUEST





(SDCCH)

ASSIGNMENT COMMEND

BSS Problem


Global Indicators

TCH Drop : 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


Global Indicators

TCH Drop : 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



Global Indicators

TCH Drop : BSS

Other BSS problem (excluding TC)

Hardware or software failures of BSC/BTS

MS BTS BSC

BSS problemCLEAR REQUEST

O&M intervention

Radio interface failure

MSC



Global Indicators

TCH Drop : Handover

Call drop during handover

MS BTS BSC

HO failure without reversion CLEAR REQUEST

Radio interface message failure

MSC



Global Indicators

Intracell HO Failures

Congestion

Reversion to Old Channel (ROC)

Drop Radio

BSS problem


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 CMDASSIGNMENT COMMAND (old channel)

Release of old and new channels


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


Global Indicators

Internal HO Failures : Reversion to Old Channel

Serving

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


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


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. Congestion MS 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


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


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


Global Indicators Important indicators : SDCCH Congestion Rate

Definition: Rate of SDCCH not allocated during radio link establishment procedure due to congestion on Air interface

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


Global Indicators Important indicators : SDCCH Assign Failure Rate

Definition: Rate of SDCCH seizure failed (BSS problem, radio access problem) during radio link establishment procedure over the total amount of SDCCH seizure requests during radio link establishment procedure


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 + Drop BSS


Global Indicators Important indicators : TCH Assign Failure/Congestion Rate

Definition:

TCH Assign Failure Rate: Rate of RTCH seizure failed (BSS problem, radio access problem) during normal assignment procedure over the total amount or RTCH request for normal assignment procedure

TCH Assign Congestion Rate: Rate of RTCH not allocated during normal assignment due to congestion on Air interface


Global Indicators Important indicators : Call Drop Rate

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

Comment:

Drop BSS + Drop radio + Drop HO

TCH drop occurring after successful assignment but before speech connection are considered as call drop even if from customer’s point of view it is a call setup failure


Global Indicators Important indicators : Call Setup Success Rate

Definition: Rate of calls going until TCH successful assignment, that is not interrupted by SDCCH drop neither by assignment failures

Comment:

Subscriber : call not established at the first attempt


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


Global Indicators Important indicators : Outgoing Handover Success Rate

Definition: Rate of outgoing external and internal intercell TCH and SDCCH handover successes over the total amount of outgoing external and internal intercell TCH and SDCCH handover required


Global Indicators Important indicators : Incoming Handover Success Rate

Definition: Rate of incoming external and internal intercell TCH and SDCCH handover successes over the total amount of outgoing external and internal intercell TCH and SDCCH handover requests


Global Indicators Important indicators : Handover Cause Distribution

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


Typical Radio Problems

i. Coverage Problem

ii. Interference problem

iii. Unbalanced power budget

problem

iv. Congestion problem


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)


i. Coverage Problem

Bad coverage :

A network facing coverage problems has

bad RxLev. RxQual can be bad at the

same time.

Sometimes the RxLev can look OK on the

street (i.e. from drivetest) but coverage

inside the buildings can be poor due to

building losses. Building losses can

range from 10 to 30 dB or more.


i. Coverage Problem

Indications : Customers complain about dropped calls

and/or “No Network” OMC QoS indicators

– TCH failure rate

– Call drop rate

– Low proportion of better cell HO

– High rate of DL & UL Level HO (possibly also DL/UL quality HO)

A interface indicators

– High rate of Clear Request message, cause radio interface failure

Drive Test

– Poor RxLev ( < -95 dBm)


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, Clutter Type, Obstructing building?). Most of the time the prediction will be incorrect, as it is only a computer simulation

– Increase or decrease antenna down-tilt

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


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.


i. Coverage Problem

Example on thresholds :

From Drive test or Abis Interface

RxLev < -95 dBm

and

RxQual > 4


ii. Interference Problem

Interference :

A network facing interferences

problems presents good RxLev

and bad RxQual in the same

time on some areas.



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 and interference HO

– Low HO success rate



Drive Test

– RxQual > 4 with RxLev > -85 dBm



Typical causes :

GSM interferences

Co-channel

adjacent

Non GSM Interference

Other Mobile Network

Other RF sources



Co-channel interference :

C/I = Carrier-to-interference ratio

+12 dB is taken into account for

Alcatel ( +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




Indications

Downlink and/or Uplink Interference

High rate of quality handover, call drop, and

call 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




Optimization

Antenna optimization

Change frequency

Reduce BTS power (not an option in TA

Orange network)

Concentric cell



Co-channel interference: Optimization: Concentric cell Concept

Conclusion from Alcatel trial on

Orange’s network (Suburban area)

Concentric cell is difficult to optimize, and hence is rarely used in the network today.



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

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

Frequencyf(cell2)=f(cell1)+1

-6 dB

f(cell1) f(cell2)

E.g.

f(cell1)= Ch.573

f(cell2)= Ch.574



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



Adjacent channel interference :

Optimization

Antenna optimization

Change frequency

Reduce BTS power (not an option in TA

Orange network)

Concentric cell


ii. Interference Problem 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 as “C” is lower)

Cell_B: Ch.573

Cell_C: Ch.572

Cell_A: Ch.569



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. illegal imported devices, illegal usage of other organization, ...)

...


iii. Unbalance power budget Problem

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

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

Crossed feeders

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

Loose connectors

Faulty antenna, feeder, TMA

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


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 weak when HO is attempted

– Degradation of TCH failures and OC call drop indicators



O&M Alarms

– Voltage Standing Wave Ratio (VSWR)

– TMA



Investigation : Abis monitoring:

– ABS(delta Path loss) > 10

» Check if problem is occurring for 1 TRX or all.

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

– UL Path loss = MS transmitted power – measured received UL level

– DL Path loss = BTS transmitted power – combiner loss – measured received DL level

– Large difference between uplink and downlink level triggered HO.

Use PM observation counter (in OMC-R)

– RT11



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



iv. TCH congestion Problem

TCH Congestion :

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

Rule : try to meet the offered traffic (asked by users) by providing the right number of resources (TRX extension)



Indications : Customers complain about “Network busy” OMC QoS indicators

– High “TCH Congestion rate”, “RTCH Assignment fail-Congestion”

– Low “incoming Intra/Inter BSC HO success rate” (no TCH available)

– High “Directed Retry rate or Congestion Relief (Motorola)” if activated

A interface indicators: “BSS Congestion failure in OC” – High rate of Assignment Failure message,

No radio resource available

Drive Test

– Handover to better cell is slow, or never occurs



Optimization :

Special events :

– Foreseeable: football match, important meeting, Exhibition, etc.

» Add some extra TRXs

» Add special mobile BTSs (Cell on Wheel)

» Activate HR (may not always be possible due to BSC capacity limitations)

– Not foreseeable: car crash on the highway



Optimization :

Daily periodic problems : At busy hour:

– Hardware solution :

» Add TRX(s)

» Concentric cell

» New site

» Optimize cell boundaries (i.e.

antenna optimization) to share

traffic with surrounding cells



Optimization :

Daily periodic problems : At busy hour:

– Software solution :

» Directed Retry

» Traffic Handover

» Half Rate (Alcatel)

» Congestion Relief (Motorola)

» Flow control (Motorola)



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)



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)


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 request

from Optimizer.



TCH Congestion problem :

Regional RF to request TRX

expansion.



Optimization: Introduction

Episode: II


Organization

Alcatel KPIs

Optimization Workflow

Optimization Process

Optimization Tools

Report Links

Optimization: Contents


Initial First Last Initial First Last

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

51 Ms. Sanida Sengyai น.ส. สนดิา เส็งใย 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 Vacant BKK RF Interface

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

56 Mr. Ferri Tafreshi Spectrum Management 0991 5150 0 9100 6426

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

58 Ms. Lilly Sarujikumjornwatana น.ส. ลลิลี่ สรุจกิ าจรวฒันะ 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 น.ส. อภวิรรณ มา้ลายทอง Software Eng. 1846 5143 0 9100 6428

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

65 Vacant Software Eng.

66 Ms. Vorrachitt Veerachitt น.ส. วรจติต์ วรีะจติต์ Frequency Planner (Contractor) - 4027 0 6622 2907

67 Mr. Warakorn Angkaphaiboonsakul นาย วรากร อังคไพบลูย์สกุล Frequency Planner (Contractor) - 4025 0 1833 4452

68 Mr. Sirasith Phanupornprapong นาย ศริสทิธิ ์ ภานุพรประพงศ์ Frequency Planner (Contractor) - 4026 0 1802 2114

69 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 นาย อาทนัินทน์ ทมุสทา้น Optimization Eng. BKK 1872 4981 0 9100 6684

2EN1110 72 Ms. Thitinun Limpaphinun น.ส. ฐตินัินท์ ลมิปาภนัินท์ Optimization Eng. BKK 2448 4983 0 9100 6691

73 Mr. Supakorn Chumnongrark นาย สภุกร จ านงครั์กษ์ Optimization Eng. BKK 0437 4985 0 9100 6682

74 Ms. Sutthida Dullaya - anukit น.ส. สทุธดิา ดลุยอนุกจิ Optimization Eng. BKK 2244 4984 0 9100 6685

75 Mr. Phairoj Thamrongthanyawong นาย ไพโรจน์ ธ ารงธัญวงศ์ Optimization Eng. BKK 4005 5196 0 6502 0053

76 Mr. Boonyarith Saovapakiran นาย บญุฤทธิ์ เสาวภาคย์หรัิณย์ Optimization Eng. BKK 4006 5027 0 6502 0052

77 Vacant Optimization Eng. BKK





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

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

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

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

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

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

88 Mr. Sarasit Wichaikhtkha นาย สารสทิธิ์ วชิยัขัทคะ 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 นาย วสันต์ ทวสีนิ Optimization Eng. Motorola 0715 4982 0 9100 6683

94 Mr. Santiphap Utta นาย สันตภิาพ อุทธา Optimization Eng. Motorola 3483 5021 0 9100 6693

2EN1110 95 Ms. Suratsawadee Kongsettakhonchai น.ส. สรัุสวดี คงเศรษฐกรชยั 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 นาย กติตศิักดิ์ เกยีรตมิั่นคง 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


INDICATORSOBJECTIVE FAT

and Phase 2

RXQUAL

90 % of call

samples below or

equal to RXQUAL 3

CSSR >= 98%

TCH Blocking

Rate<= 2 %

SDCCH

Blocking Rate<= 1 %

TCH Drop Rate <= 2 %

HOSR >= 95%

Measured at

OMCR

(Statistical BSS

Quality of Service

Indicators)

<= 2 %

<= 1 %

<= 3%

>= 94%

Drive test for

Quality of Service

indicators

CSSR >= 98 % >= 96 %

85 % of call

samples below or

equal to RXQUAL 3

TYPE OF MEASUREOBJECTIVE PAT

Phase 1A and 1B

Drive test for radio

coverage.

Down

link “RXLEV”See next page.

Alcatel KPIs : Network Statistics


Service Area

% of Samples above

or equal to

threshold ("Valid

Measurement Sample

Percentage")

Minimum Radio

Coverage Field

Strength Acceptance

Threshold on Street

Level

Dense Urban 98% - 75 dBm

Urban 96% - 82 dBm

Suburban 93% - 87 dBm

Rural 93% - 97 dBm

Highways 93% - 87 dBm

Alcatel KPIs : Drivetest Statistics


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


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


Optimization : Process

Optimization Tasks

Cell-by-cell parameter change/Massive parameter change

Neighbor addition/deletion

Correction Tasks

Cell-by-cell parameter change/Massive parameter change

Neighbor addition/deletion

Spectrum Management Tasks

Frequency change request

Retune request

The following are processes based on Remedy


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 : Operation and Maintenance Center-Radio

NPA : Network Performance Analyzer (A985)

INMS

ASSET

Net Monitor


Report Links

G:\Working Document\Net Ops\Network

Performance\@_THAI\BGW_&_Top20


Performance\@_THAI\Weekly_Dashboard


Performance\@_THAI\Daily_Dashboard_&_Alerts

TrueMove_Optimization

Documents

Transcript of TrueMove_Optimization