wcdma concepts and deployment aspects

8/18/2019 WCDMA Concepts and Deployment Aspects

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WCDMA :Concepts and Deployment Aspects

Ashish Tayal DGM (TX-II)

ALTTC Ghaziabad


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3G Statistics( As on 31.03.2006)

• 195 commercial 3G operators in 84 countries.

• Over 273 million 3G subscribers reported worldwide.

Action in wireless industry is 3G.

•896 di erent 3G wireless devices introducedcommerciall! since inception o" 3 G services.

CDMA 20001x 196 m

W-CDMA 53 m

1x-EV-DO 2 m


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3G Standard : The choice is CDMA

• #n 1999 #$% narrowed down on 5 tec&nolo'ies "or #($)2***+ 3 o" w&ic& are based on ,-( tec&nolo'!.

CDMA is the technolo y o! choice !or 3G.

• $&ese are namel! ,-( 2*** 1/+ 0),-( %($ and $-) ,-( .


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! Data "at#s $%-to 2 M&%s ' o ix#* o +n*oo En,i onm#nts.

! i / s%##* ac #t *ata s# ,ic#s.

! M$ tim#*ia s$%%o t.

! ac 4a * com%ati&i it 4it/ s#con* #n# ation ( 2G ) s st#ms.

! +m% o,#* s st#m ca%acit .

Key Requirements of 3GServices

! Data "at#s $%-to 3 &%s ' o %#*#st ian o $ &an En,i onm#nts.

! Data "at#s $%-to 1 &%s ' o 4i*# a #a mo&i # En,i onm#nts.


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#M$%&000 Data 'ate 'e(uirements

$o Meet the High Speed Data High Speed Data 'e(uirements)a 3G *ystem Must *upport+

, 144 kbps Data for High Speed

Vehicular Environment , 384 kbps Data for edestrian or

!o" Speed Vehicular Environment , # $bps Data for Stationar%

Environment


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! +nt# ation o Sat# it# an* 7# #st ia S st#ms.

! En/anc#* S#c$ it # o manc#.

! G o&a S#am #ss "oamin .

! Data "at#s $%-to 2 M&%s ' o +n*oo En,i onm#nt.

! 8 #xi& # "a*io #a # o +nc #as#* S%#ct $m E ici#nc .

! Wi*# "an # o 7# #comm$nication S# ,ic#s ( Voic# DataM$ ti-m#*ia +nt# n#t ).

! M$ ti% # "a*io En,i onm#nts ( C# $ a co * #ss sat# it#) ).

! Common S%#ct $m Wo *4i*# ( 1. ' 2.2 G : &an* ).

IMT-2000 VISION


7/3104/17/16 -

&$'(#))) S E*'+,$

&$' #))) *ore -and . /DD $ode 0 aired /re uencies2 :

$obile to *ell ., (!& 2 ( 15#) to 158) $H6

*ell to $obile .D7 (!& 2 ( #11) to #19) $H6

&$' #))) 'DD $ode unpaired band :

( 188 to 15#) $H6

( #)1) to #)# $H6


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&$' (DS .Direct Spread2 : (*D$; ,'+; /DD

&$' ($* .$ulti *arrier2 : *D$; #)))

&$'('* . 'ime *ode2 : 'D (S*D$; ,'+; 'DD

&$' (S* . Single *arrier 2 : , * ( 13<

&$'(/' ./re uenc% 'ime2 : DE*'

;&+ED DS= $*=S* > , ;&+ED 'DD

/,+'HE+ H;+$7 &?;'&7 &n rocess,'+; : ,'$S 'errestrial +adio ;ccess

,$'S :,niversal $obile 'elecommunication S%stem

&$' 'E*H 7!7@&ES&', has finall% narro"ed do"n technolog% options to the follo"ing five:


9/3104/17/16 10

olution 2ath !or G*M

Newspectru

!"istin#spectru

2G evolved 2G 3G1 . &%s 6 '115 &%s 0.3 '2 m&%s115'3 &%s

IMT-2000Capa$%e S&ste s

GSM G'(S !DG!

3G


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CDMA re(uency 'e%use$he ey to Channel Capacity

3

)

CDMA Re-use W-CDMA (UM S! cdm"2### ($S-

2###!

%DMA Re-use

**

*

*

**

**

*)

22

*

+,


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$he Code Domain

W"ls&' )S%S*re"din+

,ncodin+ $nterle"vin+

Decode De-$nterle"vin+

."se/"ndD"t"

."se/"ndD"t"

."c0+round1oise

, tern"l$nterference

t&er Cell $nterference t&er User1oise

CDMAr"nsmitte

r

CDMAReceiver

S*re"d .W

f c

S*re"d%"ctor

f c

."se/"nd .W

#

."se/"nd

.W

#

S*re"d .W

f c

S*re"d .W

f cf c

K .% function

f c

S*uriousSi+n"ls

W"ls&' )S%Correl"tor

$nterference Sources


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5ene!its o! 3G22 %CDMA 8M$*9

:i her ;oice CapacityA


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Di!!erences 5etween %CDMA @ cdma&000

W-CDMA cdm"2###

s!nc&ronous !nc&ronous

3.84 (cps 1.2288 (cps

ew e uipment %p'rade e/istin'

3G 3G 2

4 M56 7824 M56


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,ombats adin'+ ,aused b!(ultipat& adin' cts li e otc& ilter to a0ide pectrum i'nal (a! otc& onl! art o" i'nalA p%itude

.re/uenc&

, M 1

CDMA re(uency Di ersity


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7 7 7 7 7 7 7 7

7 7 7 7 -7 -7 -7 -7

7 7 -7 -7

7 7 7 7

7 7

7 -7

7 -7 7 -7

7 -7 -7 7

77 -7 7 -7 7 -7 7 -7

7 -7 7 -7 -7 7 -7 77 -7 -7 7 7 -7 -7 7

7 -7 -7 7 -7 7 7 -7

7 7 -7 -7 -7 -7 7 7

7 7 -7 -7 7 7 -7 -7

;* Code $ree7rthogonal Variable Spreading /actor

S%97

C c&:7:#

S%92

C c&:2:#

C c&:2:7

S%9;

C c&:;:#

C c&:;:7

C c&:;:2

C c&:;:3

S%9<C c&:


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S%97=S%92 S%9; S%9<7 7 7 7 7 7 7 7

7 7 7 7 -7 -7 -7 -7

7 7 -7 -7

7 7 7 7

7 7

7 -7

7 -7 7 -7

7 -7 -7 7

7

7 -7 7 -7 7 -7 7 -7

7 -7 7 -7 -7 7 -7 7

7 -7 -7 7 7 -7 -7 7

7 -7 -7 7 -7 7 7 -7

7 7 -7 -7 -7 -7 7 7

7 7 -7 -7 7 7 -7 -7

7 7 7 7 7 7 7 7 7 7 7 7 7 7 7

7 7 7 7 7 7 7 7 -7 -7 -7 -7 -7 -7 -7

7 7 7 7 -7 -7 -7 -7 7 7 7 7 -7 -7 -77 7 7 7 -7 -7 -7 -7 -7 -7 -7 -7 7 7 7

7 7 -7 -7 7 7 -7 -7 7 7 -7 -7 7 7 -7

7 7 -7 -7 7 7 -7 -7 -7 -7 7 7 -7 -7 7

7 7 -7 -7 -7 -7 7 7 7 7 -7 -7 -7 -7 77 7 -7 -7 -7 -7 7 7 -7 -7 7 7 7 7 -7

7 -7 7 -7 7 -7 7 -7 7 -7 7 -7 7 -7 7

7 -7 7 -7 7 -7 7 -7 -7 7 -7 7 -7 7 -7

7 -7 7 -7 -7 7 -7 7 7 -7 7 -7 -7 7 -77 -7 7 -7 -7 7 -7 7 -7 7 -7 7 7 -7 7

7 -7 -7 7 7 -7 -7 7 7 -7 -7 7 7 -7 -7

7 -7 -7 7 7 -7 -7 7 -7 7 7 -7 -7 7 7

7 -7 -7 7 -7 7 7 -7 7 -7 -7 7 -7 7 7

7 -7 -7 7 -7 7 7 -7 -7 7 7 -7 7 -7 -7

Shorter *odeson a -ranchmap into!onger *odes

,sing Shorter7VS/ *odes

recludes ,sing all

!onger *odesDerived fromthe 7riginal

!!ects o! ;aria


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' 4SICA55A4!(

Channels and the 2rotocol *tacB

$he mappin


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ent Over t&e ir

Multi*le in+

&ysic"l C&"nnel

r"ns*ortC&"nnel 7

r"ns*ortC&"nnel 2

r"ns*ortC&"nnel 3

U**er?"yers

3G22 Channeli>ationChannels are in code domain.3G22 *upports the Concept o! Multiple*er ices *harin a 2hysical Connection$he Concept o! $ransportE Channels isused to *upport these *er icesAdds an =tra ayer here $ransportChannel are Multiple=ed to ether 2rior to$ransmission on a 2hysical Channel

2hysical channels are in code domain.2hysical channels are discriminated

primarily


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*odes in (*D$;

• *hananeli6ation codes . 7VS/ codes 9 +

en th is dependent on *preadin actor.

8sed !or channel separation !rom a sin le source.

*ame codes in e ery cell / mo


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Newodi9ied

router So t4a #

;% a*#

0*0*00*0*0

So t4a #;% a*#

0*0*00*0*0


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Evolution to 3G – The Carrier’s Choice

*


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C(ITICA5 ISS !S IN 3G D!'5O4M!NT

*> S!AM5!SS MIG(ATION O. ! ISTING N!T O(B>

2> NAT (! AND ANT M O. 5IC!NS! .!!>

3> INT!( O'!(ATA I5IT4 O. ! I'M!NTS>

+> A55OCATION O. S'!CT( M>

,> '(ICING O. S'!CT( M>


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ISS !S .O( 3G D!'5OVM!NT

*> A IG (ISB SIN!SS= G! INV!STM!NTS>

2> IT IS N5IB! 2G !(! MA(B!T .O(!CASTS !(!

C!(TAIN>3> NO (OAD-MA' TO 3G ! ISTS>

+> NO '(OV!N ISN!SS MOD!5 ! ISTS .O( 3G>

,> IS 2>, G NOT !NO G >


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.OMA Su$scri$ers

35

10

20

23.5

0

5

10

15

20

25

1 2 3 5

'eriod

i % % i o n s

?$$ DoCoMo s 3G MA *er ice

.OMA Su$scri$e r ase

'eriod i%%ion

* Mar-0+ 3

2 u%-0+ ,

3 .e$-0, *0

+ Dec-0, 20

, Mar-0) 23>,

TT

Do Co Mo


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?$$ DoCoMo s 3G MA *er ice

reedom o! Mo


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mer ence o! M;? s

• (obile =irtual etwor Operators (= O>s bu! spectrum andnetwor capacit! "rom (obile etwor Operators ( O>s .

• (= O>s compete b! providin' di erentiated+ customi?ed

service o erin'.

• @i'& cost o" obtainin' license and settin' up 3G networencoura'e incumbent networ operators to recoup part o"

t&eir investment t&rou'& sale o" space and spectrum to(= O>s.


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3G *pectrum Allocation in #ndia

'ecommendations !ocus on comparison and issues relatin to Hust two speci!ic mo


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% normous ' @ D in estment


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'easons to ha e 4 G

% *upport !or interacti e multi%media ser ices + ideotelecon!erencin etc.

% *cala


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' ' ?C *N =

1. = /tt%??444.3 to*a .com?

3. 3 G 7o*a 4#&sit# ;">= /tt%??444.3 %%.o ?

. A + in 3 G CDMA t*.


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Thank You !!

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