UMTS Optimization Example Dr. Hatem MOKHTARI

Radio Network Tuning and

Radio Network Tuning and

Optimization for Universal

Optimization for Universal

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Dr.

Dr. Hatem Hatem MOKHTAMOKHTARR

Senior Wireless Consultant

AGENDA

AGENDA

•• MotivationMotivation

•• 2G-3G, What is different2G-3G, What is different •• Tuning Process FloTuning Process Flo

•• Tools used for Tuning !ctivit"Tools used for Tuning !ctivit" •• #$ui%&ents Configuration#$ui%&ents Configuration

•• Pilot TuningPilot Tuning •• '# Tuning'# Tuning •• Final WordsFinal Words

MOTIVATION

MOTIVATION

•• 3G netor(s are )eco&ing co&&erciall" availa)le all over3G netor(s are )eco&ing co&&erciall" availa)le all over the orld

the orld

•• TTo o chec( the functiochec( the functionalit" of the nalit" of the netor(s )eforenetor(s )efore co&&ercial launch

co&&ercial launch

•• *etor( designs are )ased on %ro%agations &odels and*etor( designs are )ased on %ro%agations &odels and si&ulations +coverage verification

si&ulations +coverage verification

•• 3G technolog" +WCM! is different fro& 2G3G technolog" +WCM! is different fro& 2G •• TToools and ols and &ethods for &ethods for 3G *etor(s3G *etor(s

Differences compared to 2G

Differences compared to 2G

•• In GeneralIn General

- The T

- The Teechnolog" is &chnolog" is &ore co&%licated ore co&%licated +/verla%%ing cells, +/verla%%ing cells, softsoft hand over, %oer control, cell )reathing etc

hand over, %oer control, cell )reathing etc

- 0igh %erfor&ance re$uire&ents on %roducts +'#  *etor( - 0igh %erfor&ance re$uire&ents on %roducts +'#  *etor(

nodes nodes

-- In Particlar for Tnin! " Optim#ationIn Particlar for Tnin! " Optim#ation - Process  tools are under develo%&ent - Process  tools are under develo%&ent - Co-located GSM3G sites

- Co-located GSM3G sites - Shared !ntenna S"ste& - Shared !ntenna S"ste& - nter-or(ing ith GSM - nter-or(ing ith GSM

Tnin! or Optimi#ation$ %&at is t&e difference

Tnin! or Optimi#ation$ %&at is t&e difference

•• Drin! Tnin!Drin! Tnin!

*o traffic in the netor(, *o su)scri)ers *o traffic in the netor(, *o su)scri)ers

*etor( tuned onl" )ased on drive test data *etor( tuned onl" )ased on drive test data 5a)our intensive ith re%eated drive test

5a)our intensive ith re%eated drive test  !ll is a)out Pre-launch activities

 !ll is a)out Pre-launch activities •• Drin! Optimi#ationDrin! Optimi#ation

Co&&ercial traffic, su)scri)ers using the netor( Co&&ercial traffic, su)scri)ers using the netor(

Statistics used idel" to &onitor netor( %erfor&ance Statistics used idel" to &onitor netor( %erfor&ance rive testing 6ust in case

rive testing 6ust in case  !ll is a)out Post7launch

Tnin! Process 'lo(

Tnin! Process 'lo(

Radio Network Initial Tuning 

Radio Network Initial Tuning for WCDMAfor WCDMA

Preparations

Preparations ParameterParameter Adit Adit Co&&ercial Co&&ercial 5aunch 5aunch Dri)e Testin! " Dri)e Testin! " Post Post Processin! Processin! *&an!e *&an!e Verification Verification " Reportin! " Reportin! Anal+sis " Anal+sis " *&an!e *&an!e Proposals Proposals

Tnin! Process 'lo(c&art

Tools 'or Tnin!,Optimi#ation " Data Post

Tools 'or Tnin!,Optimi#ation " Data Post

Processin!

Processin!

Acti)e measrement needed de to lac- of

Acti)e measrement needed de to lac- of statisticsstatistics

•• T#MS nvestigation for WCM! +SoftareT#MS nvestigation for WCM! +Softare •• T#MS Scanner +Softare ; 0WT#MS Scanner +Softare ; 0W

•• #<ternal GPS#<ternal GPS

•• 'ser #$ui%&ent +'#'ser #$ui%&ent +'#

•• T#MS es(Cat for %ost %rocessingT#MS es(Cat for %ost %rocessing •• MC/M3gMa%infoMC/M3gMa%info

USB2 USB2 USB1 USB1 Com 1 Com 1 scanner  scanner  S

Shhoorrt t ccaallll LLoonng g CCaallll

USB1 USB1 CS64 CS64 GPS GPS USB1 USB1 PS PS

rive Test #$ui%&ents for >oice, CS8.  PS call rive Test #$ui%&ents for >oice, CS8.  PS call

Dri)e test tools confi!ration Dri)e test tools confi!ration

Dri)e Test Rotes Dri)e Test Rotes

PIOT T/NING

PIOT T/NING

T&e 0asic measrements of scanner are T&e 0asic measrements of scanner are •

• CPC0@ASCPCPC0@ASCP +received signal +received signal code code %oer%oer •

• CPC0@#c*oCPC0@#c*o +received energ" %er chi% divided )" the +received energ" %er chi% divided )" the %oer densit" in the )and

%oer densit" in the )and •

• ASSASS +received signal strength indicator +received signal strength indicator %&at can +o ac&ie)e (it& scanner1

%&at can +o ac&ie)e (it& scanner1 •• Crossed feeder issues +5Crossed feeder issues +5

•• Coverage verificationCoverage verification

•• nterference %ro)le&s +overshooting cell, %ilot %ollutionnterference %ro)le&s +overshooting cell, %ilot %ollution •• Missing neigh)oursMissing neigh)ours

*OVERAGE VERI'I*ATION  Primar+ *ommon

*OVERAGE VERI'I*ATION  Primar+ *ommon

Pilot *&annel

Pilot *&annel

Ve

Verif+ P*PI*H detection to rif+ P*PI*H detection to minimi#e co)era!e &olesminimi#e co)era!e &oles •• P*PI*H R3*PP*PI*H R3*P

•• P*PI*H Ec,NoP*PI*H Ec,No

Coverage level

Coverage level    RSCP RSCP  _[dBm] [dBm] E E 

c

c /N  /N 00 [dB] [dB]

Sufficient

Sufficient    RSCP RSCP _{≥≥ −−100100} E E 

c

c /N  /N 00 ≥≥ −−1414

Poor 

Poor  _{−−115115 ≤≤} RSCP  RSCP  _{< <−−100100 −−1616 ≤≤} E  E 

c

c /N  /N 00 < < −−1414

 No coerage

 No coerage    RSCP RSCP  _{< < −−115115} E E 

c

4est 3er)er 3i!nal 3tren!t& 5R3*P6

4est 3er)er 3i!nal 3tren!t& 5R3*P6

•• Bello isBello is good

good

•• lue canlue can generate generate %ro)le&s %ro)le&s •• Gre" is )adGre" is )ad

Pilot Ec,No Measrements

Pilot Ec,No Measrements

•• Green isGreen is good

good

•• lue canlue can generate generate %ro)le&s %ro)le&s •• /range is/range is )ad )ad

INTER'ERNE*E

INTER'ERNE*E

-1?? -1?? -=? -=? -:? -:? -9? -9? -8? -8? -4? -4? -.? -.? -3? -3? --2244 --22?? --1144 --11?? --44 ?? 44 Ec,Io 7d48 Ec,Io 7d48    R    R    3    3    *    *    P    P    7    7    d    d    4    4  m  m    8    8 0igh interference 0igh interference

" correlating lo #c*o ith high ASCP, areas ith high " correlating lo #c*o ith high ASCP, areas ith high interference can )e detected

INTER'EREN*E

Primar+ *ommon Pilot *&annel 5P*PI*H6 =

Primar+ *ommon Pilot *&annel 5P*PI*H6 =

OVER3HOOTING

OVER3HOOTING

OVER3HOOTING

*&an!e Proposal> 3iteD$ 3ector?$ Antenna Do(ntilt @ De!rees *&an!e Proposal> 3iteD$ 3ector?$ Antenna Do(ntilt @ De!rees

Primar+ *ommon Pilot *&annel 5P*PI*H6 =

Primar+ *ommon Pilot *&annel 5P*PI*H6 =

PIOT PO/TION

PIOT PO/TION

•• P*PI*H R3*PP*PI*H R3*P •• P*PI*H Ec,NoP*PI*H Ec,No Hi!& *PI*H reception le)els from man+

Hi!& *PI*H reception le)els from man+ *ells$ 5more t&an MABA*TIVEB3ET6 *ells$ 5more t&an MABA*TIVEB3ET6

 size  size  serving 

 serving  cc

cc _{threshold threshold   AS  AS} 

 N   N   E   E   N   N   E   E  count  count   Pilot   Pilot  "" ≥≥ −− !! >> 0 0 0 0

PIOT PO/TION

PIOT PO/TION

PIOT PO/TION

PIOT PO/TION

PIOT PO/TION

PIOT PO/TION

*&an!e Proposals

*&an!e Proposals

Site Site Name Name Sector Sector Number Number SC of SC of Pilot Pilot Height of Height of Antenna Antenna (meters) (meters) Antenna Antenna Tilts Tilts (degree) (degree) Proosed Proosed Antenna Antenna Tilts Tilts (degree) (degree) # # 11 11$$%% %%&& 22 55 # # 22 $$66 %%&& 22 44 '

' 11 44&&55 44$$((%% 22 &&

C

C 22 2244 %%))((22 %% 55

B

? ? 4 4 1? 1? 14 14 2? 2? 24 24 3? 3? 34 34 Nm0ers of Nm0ers of 3amples 3amples 1 19933 9988 ..::44 99== 22.. 3* of Pilots 3* of Pilots ? ? 4 4 1? 1? 14 14 2? 2? 24 24 3? 3? 34 34 .? .? Nm0er of Nm0er of 3amples 3amples 1 19933 9988 99== 22.. 3* of Pilots 3* of Pilots

PIOT PO/TION

PIOT PO/TION

Initial Dri)e Test 50efore tnin!6 Initial Dri)e Test 50efore tnin!6

Verification Dri)e Test 5after tnin!6 Verification Dri)e Test 5after tnin!6

/E T/NING

/E T/NING

•• >o>oice >ideoPS ice >ideoPS callscalls

 7

 7 5ong calls5ong calls  7

 7 short callsshort calls

•• dentif" %ro)le& areasdentif" %ro)le& areas

 7

 7 loc(ed callsloc(ed calls  7

 7 ro%%ed callsro%%ed calls  7

3&ort *alls Anal+sis

3&ort *alls Anal+sis

Set-u% a call and &aintain it for a %re-defined ti&e duration Set-u% a call and &aintain it for a %re-defined ti&e duration +for 14-8? s

+for 14-8? s

Call set-u% failure and dro%s during short calls can )e &ainl" Call set-u% failure and dro%s during short calls can )e &ainl" used to anal"sis !ccessi)ilit" failure due toD

used to anal"sis !ccessi)ilit" failure due toD •• '# Failure'# Failure

•• 'nsuita)le Para&eters Setting'nsuita)le Para&eters Setting •• Coverage Pro)le&Coverage Pro)le&

•• nterferencenterference •• /thers/thers

on! *alls Anal+sis

on! *alls Anal+sis

ro%s during long call can )e used to identif"D ro%s during long call can )e used to identif"D •• Missing *eigh)or AelationMissing *eigh)or Aelation

•• Coverage Pro)le&Coverage Pro)le& •• '# Pro)le&s'# Pro)le&s

•• *etor( Characteristics*etor( Characteristics •• est Para&eter Settingest Para&eter Setting •• /thers/thers

Set-u% a call and &aintain it until it is dro% +used for Set-u% a call and &aintain it until it is dro% +used for the

KEC P

KEC PER'ORMAN*E

ER'ORMAN*E INDI*AT

INDI*ATOR3

OR3

••  !ccessa)ilit" +Call set-u% success rate !ccessa)ilit" +Call set-u% success rate •• Aetaina)ilit" +ro%%ed callsAetaina)ilit" +ro%%ed calls

•• Mo)ilit" +0andover success rateMo)ilit" +0andover success rate •• ntegrit" ntegrit" +5#A +5#A and and through%utthrough%ut

*ase ?> Drop de to missin! nei!&0or 

*ase ?> Drop de to missin! nei!&0or 

Pro0lem> Detected Ni!&0or 5DN6

Pro0lem> Detected Ni!&0or 5DN6

•• '# sends a Measure&ent Ae%ort that contains an event1a'# sends a Measure&ent Ae%ort that contains an event1a &eans adding a

&eans adding a ne A5 +cell to !ne A5 +cell to !ctive Setctive Set

•• f the re%orted cell is not in the current neigh)or cell list andf the re%orted cell is not in the current neigh)or cell list and the re%orted #c*o is )etter than the )est serving cell

the re%orted #c*o is )etter than the )est serving cell #c*o in !S )" so&e ds +set )" a A*C %ara&eter #c*o in !S )" so&e ds +set )" a A*C %ara&eter

•• f for an" reason the ne cell can not )e added to !S, callf for an" reason the ne cell can not )e added to !S, call ill )e released

*ase ?> Drop de to missin! nei!&0or 

*ase ?> Drop de to missin! nei!&0or 

E-*F cell )etter than the serving cell E-*F cell )etter than the serving cell -5 C5#A gets orse

-5 C5#A gets orse

E-*F cell )etter than the serving cell E-*F cell )etter than the serving cell -5 C5#A gets orse

*ase 2> Drop de to Poor

*ase 2> Drop de to Poor *o)era!e 5lo( R3*P6

*o)era!e 5lo( R3*P6

Pro0lem> Poor D co)era!e

Pro0lem> Poor D co)era!e

When '# gets to an area ith lo ASCP +  -1?4 d& When '# gets to an area ith lo ASCP +  -1?4 d& regardless #c*o values there is high ris( for dro%H

regardless #c*o values there is high ris( for dro%H

'# ill li(el" ra&% u% the trans&itted %oer and reach its '# ill li(el" ra&% u% the trans&itted %oer and reach its  &a< %oerH

 &a< %oerH The 5 5#A ill %ro)a)l" increase aThe 5 5#A ill %ro)a)l" increase and SAnd SA  target cannot &aintain an"&ore, finall" the call dro%sH

*ase 2> Drop de to D Poor *o)era!e

*ase 2> Drop de to D Poor *o)era!e

>er" )ad ASCP >er" )ad ASCP

'# &a< T< %oer  '# &a< T< %oer  and and high -5 5#A high -5 5#A >er" )ad ASCP

>er" )ad ASCP

'# &a< T< %oer  '# &a< T< %oer  and and high -5 5#A high -5 5#A

*ase >

*ase >

P3> 3ession Error de to Poor

P3> 3ession Error de to Poor D *o)era!e

D *o)era!e

'# enters a ver" lo coverage area +ASCP  7 1?4 d&H '# enters a ver" lo coverage area +ASCP  7 1?4 d&H The %ac(et connection is carried on a 8.8. C0 Channel The %ac(et connection is carried on a 8.8. C0 Channel  as conse$uence of the lo coverage conditionsH

 as conse$uence of the lo coverage conditionsH

The '# ill li(el" ra&% u% its %oer to the &a<i&u&, goes The '# ill li(el" ra&% u% its %oer to the &a<i&u&, goes  to dle Mode and the !%%lication and A5C through%uts go  to dle Mode and the !%%lication and A5C through%uts go to IeroH

to IeroH

 !t this %oint the A!

 !t this %oint the A!S a%%lication ill start the SesS a%%lication ill start the Sessionsion

 Ti&eout ti&er, if the through%ut is not resu&ed the Session  Ti&eout ti&er, if the through%ut is not resu&ed the Session  #rror event is triggered ith cause Esession ti&eoutH

P3> 3ession Error de to Poor

P3> 3ession Error de to Poor D *o)era!e

D *o)era!e

#** through*ut +64,-*s #** through*ut +64,-*s .er/ lo0 1SCP .er/ lo0 1SCP #** through*ut +64,-*s #** through*ut +64,-*s .er/ lo0 1SCP .er/ lo0 1SCP

'INA %ORD3

'INA %ORD3

•• 'or net(or- tnin!$ (e need to rela+ on field measrements (&ic&'or net(or- tnin!$ (e need to rela+ on field measrements (&ic& reire eFtensi)e dri)e tests

reire eFtensi)e dri)e tests

•• 'indin! t&e 0est possi0le confi!ration for antenna &ei!&ts$ tilts$'indin! t&e 0est possi0le confi!ration for antenna &ei!&ts$ tilts$

a#imt&s and parameter settin! for all t&e present cells,sectors in t&e a#imt&s and parameter settin! for all t&e present cells,sectors in t&e net(or- and also for an+ ne( sites t&at mi!&t 0e needed to impro)e net(or- and also for an+ ne( sites t&at mi!&t 0e needed to impro)e co)era!e

co)era!e

•• Po(er adstment can also 0e sed for net(or- tnin! 0t can 0ecomePo(er adstment can also 0e sed for net(or- tnin! 0t can 0ecome complicated and reslt in poor net(or- performance

complicated and reslt in poor net(or- performance

•• /se of Remote Electrical Tilt 5RET6 Antenna is preferred o)er mec&anical/se of Remote Electrical Tilt 5RET6 Antenna is preferred o)er mec&anical tilt antenna

tilt antenna

•• Nei!&0or definition is of prime importance in /MT3 net(or- 53oftNei!&0or definition is of prime importance in /MT3 net(or- 53oft

&ando)er !ain and interference redction6. Keep nei!&0or list pto 2;. &ando)er !ain and interference redction6. Keep nei!&0or list pto 2;. •• Atomated tools are needed t&at cold s!!est t&e 0est possi0leAtomated tools are needed t&at cold s!!est t&e 0est possi0le

nei!&0or relations$ antenna &ei!&ts and tilts 0+ sin! 0ot& t&e field nei!&0or relations$ antenna &ei!&ts and tilts 0+ sin! 0ot& t&e field measrements and t&e propa!ation models " simlations

measrements and t&e propa!ation models " simlations

•• 3-illed people$ ri!&t met&ods and ad)anced tools are needed to perform3-illed people$ ri!&t met&ods and ad)anced tools are needed to perform G tnin! and optimisation

*omparison of Mec&anical and Electrical Do(ntilts *omparison of Mec&anical and Electrical Do(ntilts