3G Presentation BSNL ALTTC

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3G RAN Dimensioning

3G RAN Dimensioning3G RAN Dimensioning

Presentation toBSNL

1st June 2006

Manish SyalNetor! Planning


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3G RAN Dimensioning


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3G RAN Dimensioning


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3G RAN Dimensioning


5/373G RAN Dimensioning

Softer Handover Softer Handover

BSSector 1

f1Sector 2

f1

Sector 3

f1

Multipath signal

through Sector 1

Multipath signal

through Sector 3



Soft Handover Soft Handover

BSBS

Frequency

f1

Frequency

f1



3G RAN3G RANDimensioningDimensioningScopeScope

3G RAN3G RANDimensioningDimensioningScopeScope



Network DiagramNetwork Diagram

DomainNameServer(DNS)

3GSGSN

GGSN

ChargingGateway(CG)

Backbone

network

(Ibase!)

Bor!erGateway(BG)

"ire#a$$("#)

%IG

Domain &ost Con'grationrotoco$ (D&C)

PacketnetworkInter%*N

Network

*G#*G#

Ib

Abis

BSC

No!eB

B+S

IS

ICS(A+*)

RNC

Ib

I,A+*,+D*

Backbone

PacketnetworkInternet

IN,SC S*S

PacketnetworkIntranet

*cRANA(SIG+RAN)

*A(SIG+RAN)

SS-(./)

Gb

0GSGSN

BSSA (./)

CA,*A

(./)

CA,*A(./)

.1istConnect

NewConnect

S+N,%*NNetwork

CDSCDS

*SS*SS

0G , 3G0G , 3G

&%R&%R



3G Ra!io Network $anning rocess3G Ra!io Network $anning rocess



Dimensioning InptsDimensioning Inpts2verview2verviewDimensioning InptsDimensioning Inpts

2verview2verview



Inpt arameters 2verviewInpt arameters 2verview

CAACI+ R.%A+.D Spectrm Avai$ab$e

Sbscriber Growth "orecast

+ra4c Density *ap

CAACI+ R.%A+.D Spectrm Avai$ab$e

Sbscriber Growth "orecast

+ra4c Density *ap

C25.RAG. R.%A+.D Coverage Regions

Area +ype In6ormation ropagation *o!e$

C25.RAG. R.%A+.D Coverage Regions

Area +ype In6ormation

ropagation *o!e$

78A%I+ R.%A+.D In!oor,2t!oor Coverage

%ocation robabi$ity

B$ocking robabi$ity

78A%I+ R.%A+.D In!oor,2t!oor Coverage

%ocation robabi$ity

B$ocking robabi$ity

Gives an .stimation o6 the.9ipment Necessary to *eetthe Network Re9irements

Network DimensioningActivities

Ra!io %ink B!getCa$c$ation

Ce$$ Si:e Ca$c$ation

Capacity Ca$c$ation

Nmber o6 No!e B; RNC

Ib; Ir < I +ransmissionCapacity

Gives an .stimation o6 the.9ipment Necessary to *eetthe Network Re9irements

Network DimensioningActivities

Ra!io %ink B!get

Ca$c$ation Ce$$ Si:e Ca$c$ation

Capacity Ca$c$ation

Nmber o6 No!e B; RNC

Ib; Ir < I +ransmissionCapacity

Inpt Categories



Capacity Re$ate! InptCapacity Re$ate! Inpt

" #he num$er o% su$s&ri$ers' user (ro%ile an) s(e&trum a*aila$le are themain re+uirements %or &a(a&ity )imensioning

" #ra%%i& )ata,

-oi&e ser*i&e .rlangs

/ir&uit Sit&he) /S )ata .rlangsR# real time )ata

NR# nonreal time )ata

" Busy hour tra%%i& %igures %or ea&h ser*i&e are $ro!en )on into tra%%i& (ersu$s&ri$er se(arate %or u(lin! an) )onlin!

" Su$s&ri$er e*olution %ore&ast is also nee)e)

Pa&!et Sit&he) PS )ata $(s


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3G RAN Dimensioning

Coverage Re$ate! InptCoverage Re$ate! Inpt

" A&&urate &o*erage area in%ormation shoul) $e a*aila$le

" #otal &o*erage area %or ea&h rollout (hase !m2" Per&entage o% the area %or ea&h mor(ho &lass Dense 4r$an' 4r$an'Su$ur$an an) Rural

D.NS. 4RBAN

area in !m2

4RBAN

area in !m2

S4B4RBAN

area in !m2


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3G RAN Dimensioning

Coverage Re$ate! InptCoverage Re$ate! Inpt

" Pro(agation Mo)el

" Des&ri$es the a*erage signal (ro(agation in an en*ironment5" !umura 7ata 8 /S# 7ata mo)el, (athloss &al&ulation is e9(resse)in terms o% $ase station an) mo$ile station antenna height' %re+uen&yan) &ell range5

Factor Correction+log(R))](hlog6,55-[44,9)a(H-)(hlog13,82-()log!+"#$!%1&'%!%1&1&

⋅⋅+⋅⋅

[ ]8&)(log156-h&,]-()log[1,1#)a(H

'H*2&&&+ 'H*15&&339&

'H*15&& 'H*15& 2616 #!

'H*2&&& 'H*15&&463&

'H*15&& 'H*15& 6999 #"

1&'%1&'% −⋅⋅⋅

<

<


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3G RAN Dimensioning

7a$ity Re$ate! Inpt7a$ity Re$ate! Inpt

" Blo&!ing Pro$a$ility is $lo&!ing o% &all attem(ts )ue to la&! o% a*aila$leresour&es an) %or /S Ser*i&es is usually $eteen 12:

" ;n the (ro(agation mo)els' there is no (la&e to &o*er the lo&al %lu&tuations slo %a)ing o% the strength o% the ele&tromagneti& a*es' &ause) mainly$y sha)oing5 ;t shoul) $e )one se(arately5

" 20 )B

mean

*alue

20 )B

lognormalfading

Rayleighfading

time

(oer

2 se& = se& 6 se&

>20 )B

mean

*alue

20 )B

lognormalfading

Rayleighfading


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3G RAN Dimensioning

7a$ity Re$ate! Inpt7a$ity Re$ate! Inpt

" Penetration Losses

" Signal le*els insi)e the $uil)ings are estimate) $y a((lying ?$uil)ing(enetration loss BPL@ margins5 BPL may *ary in )i%%erent area ty(es5

" ;n a))ition to BPL' in&ar (enetration losses are also &onsi)ere) %or in&ar&o*erage5

Pre% 0 )B

Pin)oor 3 5551 )B

Pin)oor C 5551 )B

1 5552 )B no &o*erage

rear si)e ,

1 55530 )B

signal le*el in&reases ith %loor

num$er ,E1' )BF%loor %or

1st 5510th %loor


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3G RAN Dimensioning

Smmary o6 Dimensioning InptsSmmary o6 Dimensioning Inpts

Dense 4r$an 4r$an Su$ur$an Rural

Voice o% su$s 8 m.rl (er su$ o% su$s 8 m.rl (er su$ o% su$s 8 m.rl (er su$ o% su$s 8 m.rl (er su$

CS data o% su$s 8 m.rl (er su$ o% su$s 8 m.rl (er su$ o% su$s 8 m.rl (er su$ o% su$s 8 m.rl (er su$

PS data o% su$s 8 !$(s (er su$ o% su$s 8 !$(s (er su$ o% su$s 8 !$(s (er su$ o% su$s 8 !$(s (er su$

Coverage area !m2 !m2 !m2 !m2

Location probability : : : :

Standard deviation )B )B )B )B

ade margin )B )B )B )B

Penetration loss )B )B )B )B

Area correctionfactor

)B )B )B )B

!S " Node #antenna $eig$t

m m m m


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3G RAN Dimensioning

R" DimensioningR" Dimensioning

rocessrocess

R" DimensioningR" Dimensioning

rocessrocess


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3G RAN Dimensioning


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3G RAN Dimensioning

R" Dimensioning rocess "$owR" Dimensioning rocess "$ow

%ink B!get Ca$c$ationRadio link specic :- Data rate (processing gain)- Average E!"o- #$% gain in d&

E'ipment specic :- # Power- #! calc* sensitivity- Antenna gainetc

%oa! 6actorca$c$ation

Propagation specic :- Antenna height- &P+ and &P+ deviation- Area correction factor

- +ognormal shadowingmargin

a,* allowed path loss

Ce$$ Range Ca$c$ation

a,* ell Range in each areatype

Capacity .stimate

"o* of sites ! .otal spportedtra/c in each area type

.9ipment Re9irement

$0s ! .ransmission ! R"

#ervice specic :-locking rate- throghpt factor

/stgess o6amonto6 tra4c

Inter6erence*argin

I6 6$'$$ the operator nee!

1f too lowcapacity


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3G RAN Dimensioning

#CD*A %ink#CD*A %ink

B!getB!get

#CD*A %ink#CD*A %ink

B!getB!get


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3G RAN Dimensioning

%ink B!get 2verview%ink B!get 2verview

&ildingpenetration loss

&ody lossP A . $ + % # #

( + ) alelosses

Antennagain

"oisegre

) a r g i n

s


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3G RAN Dimensioning

#CD*A %ink B!get#CD*A %ink B!get" ;n or)er to meet the )e%ine) +uality re+uirements

BL.R a &ertain a*erage $itenergy )i*i)e) $y

total noise>inter%eren&e s(e&tral )ensity %&b "N'( isnee)e)5

" .$FNo )e(en)s on,

" Ser*i&e

" MS s(ee)

" Ra)io &hannel

" Soft $andover gain is the gain against sha)o%a)ing5 #he &o*erage is (ro*i)e) $y multi(le &ells'there$y re)u&ing the re+uire) sha)oing margin

as &om(are) to a single &ell &ase5

#of

t$%#ofter $%


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3G RAN Dimensioning

#CD*A %ink B!get#CD*A %ink B!get

" !acro Diversity Combining %!DC( Gain, ;n DL there is some &om$ining gain )ue to 4. ma9imal

ratio &om$ining,

" So%tFso%ter han)o*ers are in&lu)e)

" A*erage is &al&ulate) o*er all the &onne&tionsta!ing into a&&ount the a*erage )i%%eren&e o%the re&ei*e) signal $ran&hes an) 4. s(ee)

" Masthea) Am(li%ier M7A is a $asi& solution %oro(timiHe) u(lin! (er%orman&e5

" !HA gain is use) to &om(ensate %or the &a$le

losses in the u(lin!5


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3G RAN Dimensioning

#CD*A %ink B!get#CD*A %ink B!get" Processing gain is the gain that &an $e o$taine)

%rom s(rea)ing the signal ser*i&e $it rate o*er the

i)e 35= 9 106

&hi(s $an)Ser*i&e $it rate Pro&essing Gain

-oi&e 1252 !$(s 2=5I E 2 )B

/S 6= !$(s 1C5C E 1 )B

PS 12 !$(s 1=5CC E 1 )B

PS 3= !$(s 10 )B

" #he higher the (ro&essing gain' the more the(oer o% the un&orrelate) inter%ering signal issu((resse) in the )is(rea)ing (ro&ess5


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3G RAN Dimensioning

#CD*A %ink B!get#CD*A %ink B!get

" )nterference margin is &al&ulate) %rom the 4LFDL

loa)ing η *alues5 #his (arameter shos homu&h the B#S sensiti*ity is )e&rease) )ue to thenetor! loa) su$s&ri$ers in the netor!5

( ) [ ]dB Log η −⋅− 11& 1&1argin 2 ( ) [ ]dB Log η −⋅− 11& 1&1argin 2

" *L Po+er Control Headroom is the (arameter to)es&ri$e the margin against %ast %a)ing5 #his (arameteris nee)e) $e&ause at the &ell e)ge the 4. )oes notha*e enough (oer to %ollo the %ast %a)ing )i(s5 #his

is es(e&ially im(ortant %or the slo mo*ing 4.s5

#CD*A %ink B!get *a1imm#CD*A %ink B!get *a1imm


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3G RAN Dimensioning

#CD*A %ink B!get *a1imm#CD*A %ink B!get *a1immath %ossath %oss

"


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3G RAN Dimensioning

%oa! Ca$c$ation%oa! Ca$c$ation%oa! Ca$c$ation%oa! Ca$c$ation

$$ !i $ $ iC $$ % !i C $ $ i


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3G RAN Dimensioning

Ce$$ %oa!ing Ca$c$ationCe$$ %oa!ing Ca$c$ation

1 ,raic -er Cell.rlang or /0it

4 nterering Channel

(#-hical channelacti6it actor)

5 Fractional $oa7

3 8hical Channel(#traic channel%H9)

2 ,raic Channel

" #ra%%i& (er &ell is usually )e%ine) in terms o% .rlang %or

*oi&e an) real time R# )ata ser*i&es an) in terms o%!$itsFs %or non real time NR# )ata

" #he $lo&!ing (ro$a$ility is ty(i&ally assume) to $e 2: %or&ir&uit sit&he) ser*i&es5


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" .*aluation o% the (hysi&al &hannel re+uirement (er&arrier %or ea&h ser*i&e &lass5 #his is &om(lete)

se(arately %or 4L an) DL5

" .*aluation o% inter%ering &hannels (er &ell %or ea&h

ser*i&e &lass5 #his re+uires a )ire&t multi(li&ation o% the(hysi&al &hannel re+uirement ith the &orres(on)ingser*i&e a&ti*ity %a&tor5

1 ,raic -er Cell

.rlang or /0it

4 nterering Channel(#-hical channelacti6it actor)

5 Fractional $oa7


2 ,raic Channel

" So%t han)o*er o*erhea) S7

" No!ia *alue 30:

assum(tion, 30: 2ay &onne&tions

: 3ay &onne&tions

#here%ore, 1 K 056 > 2 K 0530 > 3 K 050 153

C $$ % !i C $ $ tiC $$ % !i C $ $ ti


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3G RAN Dimensioning


1 ,raic -er Cell

.rlang or /0it

4 nterering Channel(#-hical channelacti6it actor)

5 Fractional $oa7


2 ,raic Channel

" #he %ra&tional loa) %or ea&h ser*i&e are e*aluate)

se(arately %or $oth u(lin! an) )onlin!" #he ta$le $elo shos an e9am(le &al&ulation,

B+S B+S


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3G RAN Dimensioning

B+S owerB+S ower

" #he lin! $u)get (ro*i)es the a*erage B#S # (oer (er &onne&tion %or ea&hser*i&e &lass5 #he B#S # (oer (er &onne&tion is )e%ine) %rom the a*erage

DL isotro(i& (ath loss5

" #he total B#S # (oer is o$taine) $y summing u( the # (oer re+uire) %orall ser*i&e &lasses an) &ommon &hannels

"


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3G RAN Dimensioning

DimensioningDimensioning

Res$tsRes$ts

DimensioningDimensioning

Res$tsRes$ts

Dimensioning Res$tsDimensioning Res$ts


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3G RAN Dimensioning


Required HW channels (BTS processing capacity)

Load Required BTS TX

power

TRAFF!"rlang or #$it%s

TRAFF!"rlang or #$it%s

TRAFF! !HA&&"LSTRAFF! !HA&&"LS

'HS!AL !HA&&"LS'HS!AL !HA&&"LS

&T"RF"R& !HA&&"LS&T"RF"R& !HA&&"LS

FRA!T*&AL L*A+FRA!T*&AL L*A+

FRA!, L*A+ *F TH"S"R-!" !LASS"S

FRA!, L*A+ *F TH"S"R-!" !LASS"S Σ

T*TAL L*A+ .L / +L

T*TAL L*A+ .L / +L

R"0.R"+ BTS TX'*W"R

R"0.R"+ BTS TX'*W"R

%imiting 6actors=

" #he %olloing &riteria shoul) $e &onsi)ere),

" 4(lin! loa) Ma9imum u(lin! loa)

" DL loa) 1

" B#S # (oer Ma9imum B#S # (oer

" Num$er o% &hannel units Ma9 num$er o% &hannel units



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3G RAN Dimensioning


R< D;M.NS;N;NGR.S4L#S

" Num$er o% $ase stations

" /on%iguration o% $ase stations

"Num$er o% su$s&ri$ers (er area

" m.rl %or *oi&e an) R# )ata

" m.rl %or NR# )ata

;u$F;urF;u ;N#.R


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3G RAN Dimensioning

,$an- .o/,$an- .o/

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