WCDMA Fundamentals

7/17/2019 WCDMA Fundamentals

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1 NOKIA WCDMA Fundamentals.PPT/10.06.2003 / NN

WCDMA Fundamentals

MODU! 1


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Module Objectives

At t"e end #$ t"%s m#dul t"e &a't%(%&ant )%ll *e a*le t#+

, Des('%*e t"e usa-e #$ s('eam*l%n- and ("annal%sat%#n (#des

, Des('%*e "#) d%e'ent *%t 'ates (an *e a("%eed

, Des('%*e "#) t"e (a&a(%t and (#e'a-e a'e (#nne(ted t# ea("#t"e's

, Des('%*e d%e'ent and#e' t&es

, Des('%*e P#)e' C#nt'#l &'#(edu'es

, !&la%n t"e tass #$ Adm%ss%#n C#nt'#l4 #ad C#nt'#l4 Pa(et

5("edule' and %nte'(#nne(t%#ns *et)een t"em


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IMT-2000 frequencallocations

2200 M720001800 1890 2090 2100 21901:90

;a&anIMT-2000!"#

IMT-2000

ITUMobile

#atellit

eIMT-2000 IMT-2000

!u'#&e

$MT#

%FDD&D'CT

$

MT#

%TDD&

(#M

)*00 $MT#

%T

DD&

$MT#

%FDD&

U5A!C#

unlicensed

!C#!C#

$MT#

%TDD&

IMT-2000

%TDD&

Mobile

#atellit

e

Mobile

#a

tellit

e

Mo

bile

#atellit

e

Mobile

#atellit

e

Mobile

#atellit

e

Mobile

#atellit

eMobile

#atellit

e


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< NOKIA WCDMA Fundamentals.PPT/10.06.2003 / NN

$MT# + (#M ,etor. !lannin/

G S M 9 0 0 / 1 8 0 0 : 3 G ( W C D M A ) :


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"ierarcical Cell #tructure

F)

F2

F2

F1

F1

F1

Micro T#Macro T#

!ico T#s

) - )0 .m

30 - )00 m200 - 300 m



Di4erences beteen WCDMA +(#M

WCDMA GSM

Carrier spacing 5 MHz 200 kHz

Frequency reuse factor 1 118

Power controlfrequency

1500 Hz 2 Hz or lower

Quality control Radio resourcemanagement algorithms

Network planning(frequency planning)

Frequency diversity 5 MHz bandwidth givesmultipath diversity with

Rake receiver

Frequency hopping

Packet data Load-based packetscheduling

Timeslot basedscheduling with GPRS

Downlink transmitdiversity

Supported forimproving downlink

capacity

Not supported by thestandard, but can be

applied

%-" *%t'ates

5&e(t'ale=(%en(

D%e'ent>ual%t

'e>u%'ements

!=(%ent&a(etdata


7/52? NOKIA WCDMA Fundamentals.PPT/10.06.2003 / NN

WCDMA Tecnolo/

5 M H z

3 . 8 4 M H z

f

9@9 M7 %n FDD m#de9 M7 %n TDD m#de

Freque

ncy

!"eD!rec# Sequence (DS) CDMA

WCDMA

Ca''%e'

WCDMAWCDMA

5 MHz, 1 carrier5 MHz, 1 carrier

TDMA (GSM)TDMA (GSM)

5 MHz, 25 carriers5 MHz, 25 carriers


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5&'ead%n- C#de

#5read #i/nal

Data

%' Inte'$a(e

Ci5s + its + #mbolsits %In tis drain/6 ) bit 7 * Ci5s&

ase*and Data

-)

8)

8)

8)

8)

8)

-)

-)

-)

-)

Ci5Ci5

Des5re

adi

Des5re

adi

n/n/



'ner/ o9

F'e>

uen(

0Aa

nd

Duration

(SF)

Powe

r

Originating Bit Received Bit

!ne'- &'# *%t B(#nst



#5readin/ + !rocessin/ (ain

F'e>uen(P

#)e'dens%t0CWatts/7D

Uns&'ead na''#)*and s%-nal 5&'ead )%de*and s%-nal

and)%dt" W 3.:< M("%&/se(

%t 'ate

E

sec84.3 Mchip

WconstSFR ===

[ ] SFRW

BBdBGBaerer

Up

u===

&+ &'#(ess%n--a%nUu+ sstem ("%&'ateea'e'+ *ea'e' sm*#l'ate


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!rocessin/ (ain '9am5les

F'e>uen( 7

:oice user %;7)2 .bit=s&

P#)e'dens%t0

CW/7D

;

F'e>uen( 7

(57W=;72>


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Transmission !oer

F'e>uen(

9M7

P#)e'

T%me

%-" *%t 'ate use'

#) *%t 'ate use'


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Cell load

0

5

10

15

20

25

0 0,2 0,4 0,6 0,8 1@oad

@oss

%d&

, Ma. 'e(#mmended l#ad+ ?0G4 t&%(all 30H90G

, 90G l#ad means 3 d l#ss %n l%n *ud-et


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1< NOKIA WCDMA Fundamentals.PPT/10.06.2003 / NN

D@ + $@ Cannalisation Codes

, Wals"Hadama'd (#des+ #'t"#-#nal a'%a*le s&'ead%n- $a(t#'(#des O5F (#des

, 5F $#' t"e D t'ansm%ss%#n %n FDD m#de B J


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Cannelisation Code Tree

C00B1

C21B1H

1

C20B11

C


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!sical @aer it ;ates %D@&

"alf rate s5eec

Full rate s5eec

)2* .b5s

1*> .b5s

2 Mb5s


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1? NOKIA WCDMA Fundamentals.PPT/10.06.2003 / NN

D@ + $@ #cramblin/ Codes

D 5('am*l%n- C#des

, Pseud# n#%se (#des used $#' (ell se&a'%t%#n, ene'ated )%t" t"e s"%$t 'e-%ste' #$ len-t" 1: 21:H1B262 1


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#creamblin/ Codes + Multi5at!ro5a/ation

5&'am*l%n- (#de

C1

5&'am*l%n- (#de

C2

C1@3

C1@2C1@

1

C2


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;A' ;eceiver

Delay1Code used

for thecoectio

!"

#ut$ut

%i&er

t

Cell'1

Cell'1

Cell'1

Cell'2

!"

!"

!"

%i&er

%i&er

%i&er

Delay2

Delay3

Cannelisation and #cramblin/


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Cannelisation and #cramblin/Codes


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D@ #5readin/

T# t"em#dulat#'

I 'an("

Q 'an("

P"s%(alC"annel

5e'%al

t#Pa'allel(#ne's%#n

("annal%sat%#n

j

I@RQ

C#m&les('am*l%n-

and)e'

)e%-"t%n-


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D@ Modulation

Oscillator

?0B !ase #ift

EF Out

I 'an("

Q 'an("

De/rees and its

S1S S0S1:0 0

De/rees and itsS1S S0S80 H 80

it combinations in ;adio

S10S139

S00S


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$@ #5readin/

T# t"em#dulat#'

I 'an("

Q 'an("

P"s%(alC"annel

("annal%sat%#n

j

I@RQ

C#m&les('am*l%n

-

Data &a't

C#nt'#l&a't ("annal%sat

%#n

)e')e%-"t%

n-

)e')e%-"t%

n-


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$@ Modulation

I/Q

s&l%t

Oscillator

?0B !ase #ift

I 'an("

Q 'an("

De/rees and its

S1S S0S1:0 0

De/rees and its

S1S S0S80 H 80

it combinations in ;adio !

S10S139

S00S


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Micro Diversit

Micro Diversity Pointsmax ratio combining is used

Summed signal

N#de EAK!

Ee(e%e'

M5EAK!

Ee(e%e'

i i i C


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Macro Diversit in te ;,C

N#de

N#de

N#de

S$%&C

DHENC

Core ,etor.

Active cell set

Macro Diversity Pointselection combining is used


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;adio ;esource Mana/ement

service

quality

cell coverage cell capacity

Optimizationand Tailoring

, EEM %s 'esns%*le $#' #&t%mal ut%l%sat%#n #$ t"e 'ad%# 'es#u'(es+,T'ansm%ss%#n )e',#-%(al (#des,and)%t"

, T"e t'adeH# *et)een (a&a(%t4 (#e'a-e and >ual%t %s d#ne allt"e t%me+ as man use's as ss%*le )%ll -et t"e 'es#u'(es %n su("a )a4 t"at t"e m%n%mum 'e>u%'ed >ual%t %s meet n#t"%n- lessand n#t"%n- m#'e

, means #$ see'al EEM $un(t%#nal%t%es4 t"e 'ad%# 'es#u'(es a'e(#nt%nu#usl m#n%t#'ed and #&t%m%se.

; di ; M t


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EEM must *e a*le t#+

, P'ed%(t t"e %m&a(t #n %nte'$e'en(e )e' #$t"e adm%tt%n- a ne) use' $#' U V D

, Pe'$#'m a&&'#&'%ate a(t%#ns e.-. ne) (alladm%ss%#ns4 *%t'ate %n('ease/de('ease et(. %na((#'dan(e )%t" &'ea%l%n- l#ad (#nd%t%#ns

, P'#%de d%e'ent >ual%t #$ se'%(e $#' 'ealt%me ET and n#nH'eal t%me NET use's

, Tae a&&'#&'%ate (#''e(t%e a(t%#n )"en t"ed%e'ent (ell l#ad t"'es"#lds a'e e(eeded %n#'de' t# ma%nta%n (ell sta*%l%t %.e. l#ad(#nt'#l

Overload

@oad Tar/et

Overload Mar/in

P#)e'

T%me

!st%mated(a&a(%t $#'NET t'a=(Measu'ed l#ad(aused

* n#nH(#nt'#lla*lel#ad ET

;adio ;esource Mana/ement

ET se'%(es must "ae "%-"e' >ual%t assu'an(et"an NET

;;M Functionalities


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;;M Functionalities

, AC Adm%ss%#nC#nt'#l

, C #ad C#nt'#l

, P5 Pa(et 5("edule'

, EM Ees#u'(eMana-e'

, PC P#)e' C#nt'#l

, CO C#nt'#l

PC

C

C#nne(t%#n *ased $un(t%#ns

C

AC

Net)#' *ased $un(t%#ns

P5

EM

Admission Control


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Admission Control, C"e(s t"at adm%tt%n- a ne) use' )%ll n#t sa('%(e &lanned

(#e'a-e #' >ual%t #$ e%st%n- (#nne(t%#ns

, Dete'm%nes )"et"e' #' n#t a ne) ET EA (an *e adm%tted t# t"eEAN

, W%t" P5 de(%des )"et"e' t# adm%t NET EAs P5 "andles all NET(#nne(t%#ns

, Als# sets, U/D !E4 !*/N# ta'-ets, 5IE ta'-et $#' #ute' l##& )e' (#nt'#l, In%t%al D t'ansm%ss%#n )e' $#' t"e ("annel, Ead%# %n C#nt'#l &a'amete's4 e.-. t'ansm%ss%#n m#de,T'ans't C"annel T'C &a'amete's4 e.-. TF5

, P'#%des EC &a'amete's t# P5 $#' NET use'sL, ea'e' (lass,T'a=( "andl%n- &'%#'%t,T'ans't F#'mats, M5 (a a*%l%t%es

Admission Control


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Admission Control

;adio Access earerson te air interface $

uInterfac

e2an

d-idt0

Alloed ;an/eAC P'#(edu'e

...

Admission Control


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Admission Control

Planned u&l%n %nte'$e'en(e

ma'-%nLdenes t"e #&t%mum #&e'at%n-%t u& t# )"%(" t"e AC (an#&e'ate.

Denes t"e l%m%t t"e 'st U#e'l#ad t"'es"#ld $#' t"e U%nte'$e'en(e ma'-%n4 a$te')"%(" t"e 5 sta'ts %ts l#ad(#nt'#l a(t%#ns t# &'eent

#e'l#ad.

0

5

10

15

20

25

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

@oad

Interferen

ceMar/in%d&

Oset

@oad Control


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@oad Control, Cell l#ad %s dened as a $un(t%#n #$ %nte'$e'en(e ma%n ('%te'%#n %n WCDMA

, T"e l#ad (#nt'#l $un(t%#n )%t"%n EEM (an *e d%%ded %nt#+

, P'eent%e l#ad (#nt'#l e.-. (#n-est%#n, Oe'l#ad (#nt'#l e.-. d'#&&%n- #$ (alls %n )#'st (ase

, T"e l#ad (#nt'#l $un(t%#nal%t %s d#ne * measu'%n- *#t" U 'e(e%ed%nte'$e'en(e and D t'ansm%t )e' &e'%#d%(all #n a (ell *as%s

, #ad (#nt'#l %s &e'$#'med $#' U and D se&a'atel asmmet'%( t'a=(

, P'eent%e a(t%#ns a'e &e'$#'med *e$#'e t"e (ell %s #e'l#aded t"'es"#ld

, Oe'l#ad a(t%#ns a'e &e'$#'med a$te' (ell %s #e'l#aded t"'es"#ld

, ENP &a'amete's dene t"e t"'es"#lds $#' t"e EEM $un(t%#nal%t%es

, T"e t"'es"#lds dene a sta*le $un(t%#nal%t )%t"%n a (ell and )%t"su''#und%n- (ells

@oad Control


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@oad Control

!st%mated (a&a(%t $#' NETt'a=(.Measu'ed l#ad (aused * n#nH(#nt'#lla*le l#adET

Overloadthreshold x

@oad Tar/etthreshold y

P#)e'

T%me

!reventive @oad Control

Overload Control

@oad Control


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@oad Control

, C &e'$#'ms t"e $un(t%#n #$ l#ad (#nt'#l %n ass#(%at%#n )%t" AC V P5C )#'s as -lue *et)een t"ese t)# $un(t%#ns

, U&dates l#ad status us%n- measu'ements V est%mat%#ns &'#%ded* AC and P5

, C#nt%nu#usl $eeds (ell l#ad %n$#'mat%#n t# P5 and ACL

, Inte'$e'en(e leels

, T5 )e' leels

, N#nH(#nt'#lla*le l#ad

C

AC

P5,;Tload

@oad can/einfo

@oadstatus

!ac.et #ceduler


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!ac.et #ceduler,A n#nH'eal t%me (all (#nst%tutes #$ a *u'st se>uen(e #$ &a(ets.

,In t"e d#)nl%n4 t"e Pa(et 5("edule' de(%des )"%(" ("annel t# use4 D

,T"e l#ad ta'-et (an *e 'ea("ed * s("edul%n- t"e t'ansm%ss%#n #$ NET

time

packet service session

packet call

reading time

packet size packet arrival interval

!ac.et #ceduler


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!ac.et #ceduler

, P5 all#(at%#n t%mes need t# *e $ast t# a((#mm#date ("an-%n-(#nd%t%#ns V a((u'ate u&Ht#Hdate l#ad %n$#

, Ca&a(%t 'e>uests sent %a t'a=( #lume measu'ement 'e'ts

-#e'ned * ENP &a'amete's

, P5 (#m&'%ses t)# &a'ts+ M5 s&e(%( V Cell s&e(%(

power

time

noncontrolla!le load

controlla!le load

T#tal #ad

Ta'-et t"'es"#ld

Oe'l#ad t"'es"#ld

, Eesns%*le $#' s("edul%n- 'ad%#'es#u'(es $#' *#t" U and D

NET EAs

, 5("edul%n- &e'%#d dened *ENP &a'amete's

, P5 'el%es #n u&Ht#Hdate%n$#'mat%#n $'#m AC and P5

, Ca&a(%t all#(ated #n a needs*as%s us%n- X*est e#'tY a&&'#a("

!ac.et #ceduler %!#&


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% &, P5 als# 'esns%*le $#'+

,TFC5 sele(t%#n

,In%t%al ("annel sele(t%#n *ased #n ENP &a'amete's V EC *ue'l#adL

, small am#unts #$ NET data sent #n (#nt'#l ("annels Cell ZFACstate

, l#n- and $'e>uent data sent #n ded%(ated ("annels Cell ZDC state

,Queu%n- #$ uns("eduled NET (a&a(%t 'e>uests >ueu%n-al-#'%t"m

,Ca&a(%t 'e>uest "andl%n- l%(

,In('eas%n-/de('eas%n- use' *%t 'ates -#e'ned * ENP&a'amete's

,P5 &'eent%e V #e'l#ad a(t%#ns

!ac.et #ceduler


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!ac.et #ceduler

"adio network planningparameters

#eriodical cell meas$rements

#eriodical radio linkmeas$rements

"%set$p&recon'ig$ration&release

in'ormation

Traffic olueeasureets (tri&&ers for

DCH allocatio)

(pdated powerestimations

Cotrol of trafficolue easureets

DCH allocatios for *!T !+

ac-etac-etschedulerscheduler

;esource Mana/er


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uen(, P##' PC leads t# %n('ease %nte'$e'en(e [ 'edu(ed (a&a(%t

, F'#m T5 &e's&e(t%e ee' U! a((ess%n- net)#' %n('ease %nte'$e'en(e

, WCMDA (a&a(%t %s &'#'t%#nal t# %nte'$e'en(e leel [ m%n%m%se %nte'$e'en(e

, PC ma%nta%ns l%n >ual%t * adRust%n- U! U and T5 D )e's ee' sl#t

, M%t%-ates Snea' $a' ee(tS4 * &'#%d%n- m%n%mum 'e>u%'ed )e' $#' ea("(#nne(t%#n

, U!s and T5s s"#uld al)as *e at t"e l#)est ss%*le t'ansm%ss%#n )e'

, PC ut%l%ses 5%-nalHt#HInte'$e'en(e Eat%# 5IE %nde&endentl $#' ea("(#nne(t%#n

, P'#%des &'#te(t%#n a-a%nst s"ad#)%n- and $ast $ad%n-

O5en @oo5 !oer Control


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u%'ed C/I 'at%# ENP &a'amete', U %nte'$e'en(e

, U! uses t"ese &a'amete's t# (al(ulate %n%t%al )e' #$ EAC&'eam*le

, I$ a((ess 'e>uest %s n#t dete(ted )e' #$ &'eam*le %s %n('eased%n ste&s

, A$te' dete(t%#n #$ M5 s%-nal4 t"e %n%t%al 5IE %s (al(ulated %n ENC

P'eam*le P'eam*leP'eam*le P'eam*leM5

Out&ut

P

#)e'

AIC"

Mesa-e Pa't

;AC"

Fast @oo5 !oer Control


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u%'ed >ual%t, U >ual%t ealuat%#n %s made a$te' MDC, ENP &a'amete's (#nt'#l t"e t"'es"#ld (#m&a'%s#n &'#(ess $#' 5IE

ta'-et and t"e 'e't%n- #$ t"ese 'esults, I$ 5IE ta'-et 'ea("es %ts ma%mum I.e. 'ad%# (#nd%t%#ns

dete'%#'ate een t"#u-" 5IE ta'-et %s %n(eased4 sstem "as t#tae a(t%#nL

, %nte'H$'e>uen( / %nte'Hsstem "and#e', EEC (#nnne(t%#n 'elease

"andover Control


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ual%t and (a&a(%t.It "as als# an ee(t t# (#e'a-e due (ell *'eat"%n-.

, O&t%m%sat%#n "as an %m'tant '#le %n (#nt'#ll%n- t"e "and#e' &e'$#'man(e du'%n- t"e&'eHlaun(" #&t%m%sat%#n %n%t%al sett%n-. T"%s '#le %s es&e(%all essent%al %n (#nt%nu#us#&t%m%sat%#n )"en t'a=( %n('eases and leell%n- #$ t'a=( *et)een *ase stat%#ns*e(#mes m#'e %m'tant.

"anover Control


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, 5#$t and#e', Call %s (#nne(ted *e$#'e "and#e' %s (#m&leted4 'edu(%n- t"e

&'#*a*%l%t #$ a d'#&&ed (all

, P'#(ess%n- a%n, as%( CDMA *enet B[ t"e )%de' t"e t'ansm%tted *and)%dt"

(#m&a'ed t# t"e use' data'ate t"e less )e' %s needed $#'t"e t'ansm%ss%#n

, Adan(ed Ead%# Ees#u'(e Mana-ement EEM, EEM )%ll (#nt'#l (all adm%ss%#n and &a(et s("edul%n- and all

EEM *u%ld%n- *l#(s a'e (l#sel 'elated t# ea(" #t"e'

, Mult%&at" 5%-nal P'#(ess%n-, C#m*%nes )e' $#' %n('eased s%-nal %nte-'%t B[ EAK!

'e(e%e'


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WCDMA Fundamentals

E!I!W QU!5TION5


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WCDMA Fundamentals

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Transcript of WCDMA Fundamentals