3g presentation bsnl alttc
TRANSCRIPT
-
8/18/2019 3G Presentation BSNL ALTTC
1/37
3G RAN Dimensioning
3G RAN Dimensioning3G RAN Dimensioning
Presentation toBSNL
1st June 2006
Manish SyalNetor! Planning
-
8/18/2019 3G Presentation BSNL ALTTC
2/37
3G RAN Dimensioning
-
8/18/2019 3G Presentation BSNL ALTTC
3/37
3G RAN Dimensioning
-
8/18/2019 3G Presentation BSNL ALTTC
4/37
3G RAN Dimensioning
-
8/18/2019 3G Presentation BSNL ALTTC
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
-
8/18/2019 3G Presentation BSNL ALTTC
6/373G RAN Dimensioning
Soft Handover Soft Handover
BSBS
Frequency
f1
Frequency
f1
-
8/18/2019 3G Presentation BSNL ALTTC
7/373G RAN Dimensioning
3G RAN3G RANDimensioningDimensioningScopeScope
3G RAN3G RANDimensioningDimensioningScopeScope
-
8/18/2019 3G Presentation BSNL ALTTC
8/373G RAN Dimensioning
Network DiagramNetwork Diagram
DomainNameServer(DNS)
3GSGSN
GGSN
ChargingGateway(CG)
Backbone
network
(Ibase!)
Bor!erGateway(BG)
"ire#a$$("#)
%IG
Domain &ost Con'grationrotoco$ (D&C)
PacketnetworkInter%*N
Network
*G#*G#
Ib
Abis
BSC
No!eB
B+S
IS
ICS(A+*)
RNC
Ib
I,A+*,+D*
Backbone
PacketnetworkInternet
IN,SC S*S
PacketnetworkIntranet
*cRANA(SIG+RAN)
*A(SIG+RAN)
SS-(./)
Gb
0GSGSN
BSSA (./)
CA,*A
(./)
CA,*A(./)
.1istConnect
NewConnect
S+N,%*NNetwork
CDSCDS
*SS*SS
0G , 3G0G , 3G
&%R&%R
-
8/18/2019 3G Presentation BSNL ALTTC
9/373G RAN Dimensioning
-
8/18/2019 3G Presentation BSNL ALTTC
10/373G RAN Dimensioning
3G Ra!io Network $anning rocess3G Ra!io Network $anning rocess
-
8/18/2019 3G Presentation BSNL ALTTC
11/373G RAN Dimensioning
Dimensioning InptsDimensioning Inpts2verview2verviewDimensioning InptsDimensioning Inpts
2verview2verview
-
8/18/2019 3G Presentation BSNL ALTTC
12/373G RAN Dimensioning
Inpt arameters 2verviewInpt arameters 2verview
CAACI+ R.%A+.D Spectrm Avai$ab$e
Sbscriber Growth "orecast
+ra4c Density *ap
CAACI+ R.%A+.D Spectrm Avai$ab$e
Sbscriber Growth "orecast
+ra4c Density *ap
C25.RAG. R.%A+.D Coverage Regions
Area +ype In6ormation ropagation *o!e$
C25.RAG. R.%A+.D Coverage Regions
Area +ype In6ormation
ropagation *o!e$
78A%I+ R.%A+.D In!oor,2t!oor Coverage
%ocation robabi$ity
B$ocking robabi$ity
78A%I+ R.%A+.D In!oor,2t!oor Coverage
%ocation robabi$ity
B$ocking robabi$ity
Gives an .stimation o6 the.9ipment Necessary to *eetthe Network Re9irements
Network DimensioningActivities
Ra!io %ink B!getCa$c$ation
Ce$$ 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
-
8/18/2019 3G Presentation BSNL ALTTC
13/373G RAN Dimensioning
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
-
8/18/2019 3G Presentation BSNL ALTTC
14/37
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
-
8/18/2019 3G Presentation BSNL ALTTC
15/37
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&'% −⋅⋅⋅
<
<
-
8/18/2019 3G Presentation BSNL ALTTC
16/37
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
-
8/18/2019 3G Presentation BSNL ALTTC
17/37
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
-
8/18/2019 3G Presentation BSNL ALTTC
18/37
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
-
8/18/2019 3G Presentation BSNL ALTTC
19/37
3G RAN Dimensioning
R" DimensioningR" Dimensioning
rocessrocess
R" DimensioningR" Dimensioning
rocessrocess
-
8/18/2019 3G Presentation BSNL ALTTC
20/37
3G RAN Dimensioning
-
8/18/2019 3G Presentation BSNL ALTTC
21/37
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
-
8/18/2019 3G Presentation BSNL ALTTC
22/37
3G RAN Dimensioning
#CD*A %ink#CD*A %ink
B!getB!get
#CD*A %ink#CD*A %ink
B!getB!get
-
8/18/2019 3G Presentation BSNL ALTTC
23/37
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
-
8/18/2019 3G Presentation BSNL ALTTC
24/37
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 $%
-
8/18/2019 3G Presentation BSNL ALTTC
25/37
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
-
8/18/2019 3G Presentation BSNL ALTTC
26/37
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
-
8/18/2019 3G Presentation BSNL ALTTC
27/37
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
-
8/18/2019 3G Presentation BSNL ALTTC
28/37
3G RAN Dimensioning
#CD*A %ink B!get *a1imm#CD*A %ink B!get *a1immath %ossath %oss
"
-
8/18/2019 3G Presentation BSNL ALTTC
29/37
3G RAN Dimensioning
%oa! Ca$c$ation%oa! Ca$c$ation%oa! Ca$c$ation%oa! Ca$c$ation
$$ !i $ $ iC $$ % !i C $ $ i
-
8/18/2019 3G Presentation BSNL ALTTC
30/37
3G RAN Dimensioning
Ce$$ %oa!ing Ca$c$ationCe$$ %oa!ing Ca$c$ation
1 ,raic -er Cell.rlang or /0it
4 nterering Channel
(#-hical channelacti6it actor)
5 Fractional $oa7
3 8hical Channel(#traic channel%H9)
2 ,raic Channel
" #ra%%i& (er &ell is usually )e%ine) in terms o% .rlang %or
*oi&e an) real time R# )ata ser*i&es an) in terms o%!$itsFs %or non real time NR# )ata
" #he $lo&!ing (ro$a$ility is ty(i&ally assume) to $e 2: %or&ir&uit sit&he) ser*i&es5
-
8/18/2019 3G Presentation BSNL ALTTC
31/37
3G RAN Dimensioning
Ce$$ %oa!ing Ca$c$ationCe$$ %oa!ing Ca$c$ation
" .*aluation o% the (hysi&al &hannel re+uirement (er&arrier %or ea&h ser*i&e &lass5 #his is &om(lete)
se(arately %or 4L an) DL5
" .*aluation o% inter%ering &hannels (er &ell %or ea&h
ser*i&e &lass5 #his re+uires a )ire&t multi(li&ation o% the(hysi&al &hannel re+uirement ith the &orres(on)ingser*i&e a&ti*ity %a&tor5
1 ,raic -er Cell
.rlang or /0it
4 nterering Channel(#-hical channelacti6it actor)
5 Fractional $oa7
3 8hical Channel(#traic channel%H9)
2 ,raic Channel
" So%t han)o*er o*erhea) S7
" No!ia *alue 30:
assum(tion, 30: 2ay &onne&tions
: 3ay &onne&tions
#here%ore, 1 K 056 > 2 K 0530 > 3 K 050 153
C $$ % !i C $ $ tiC $$ % !i C $ $ ti
-
8/18/2019 3G Presentation BSNL ALTTC
32/37
3G RAN Dimensioning
Ce$$ %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
" #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
-
8/18/2019 3G Presentation BSNL ALTTC
33/37
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) $y summing u( the # (oer re+uire) %orall ser*i&e &lasses an) &ommon &hannels
"
-
8/18/2019 3G Presentation BSNL ALTTC
34/37
3G RAN Dimensioning
DimensioningDimensioning
Res$tsRes$ts
DimensioningDimensioning
Res$tsRes$ts
Dimensioning Res$tsDimensioning Res$ts
-
8/18/2019 3G Presentation BSNL ALTTC
35/37
3G RAN Dimensioning
Dimensioning Res$tsDimensioning Res$ts
Required HW channels (BTS processing capacity)
Load Required BTS TX
power
TRAFF!"rlang or #$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$er o% &hannel units
Dimensioning Res$tsDimensioning Res$ts
-
8/18/2019 3G Presentation BSNL ALTTC
36/37
3G RAN Dimensioning
Dimensioning Res$tsDimensioning Res$ts
R< D;M.NS;N;NGR.S4L#S
" Num$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$F;urF;u ;N#.R
-
8/18/2019 3G Presentation BSNL ALTTC
37/37
3G RAN Dimensioning
,$an- .o/,$an- .o/