8/11/2019 3G Ericsson Link Budget http://slidepdf.com/reader/full/3g-ericsson-link-budget 1/15 1/15 MV Program Ericsson WCDMA Link Budget Calculation Internal Sec !or Internal use onl" #ul" $%1% ERICSSON WCDMA LINK BUDGET CALCULATION Version 1.0 The scope of this document is to outline how to calculate the UL and DL coverage of the Ericsson WCDMA radio access network. The methods descried can e used for rough estimates suitale in the dimensioning process. Using this document the user will e ale to! calculate free space path loss using "kumura#$ata propagation formula calculate UL and DL %adio network design ma&imum path loss calculate sensitivit' of the %() and UE for various services calculate link udget margins get overview of link udget losses perform link udget calculations for the UL and DL* oth for the $)D+A and non#$)D+A cells
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1/15 MV ProgramEricsson WCDMA Link Budget Calculation
Internal Sec!or Internal use onl"#ul" $%1%
ERICSSON WCDMA LINK BUDGETCALCULATION
Version 1.0
The scope of this document is to outline how to calculate the UL and DL coverage ofthe Ericsson WCDMA radio access network. The methods descried can e used forrough estimates suitale in the dimensioning process.
Using this document the user will e ale to! calculate free space path loss using "kumura#$ata propagation formula calculate UL and DL %adio network design ma&imum path loss calculate sensitivit' of the %() and UE for various services calculate link udget margins get overview of link udget losses perform link udget calculations for the UL and DL* oth for the $)D+A and
a,-.-#48./-, -2/.91 for Urana,-/0.1#48./-, -40./1 for )uuran and semi#opened areasa,-2.3#48./-, --.21 for %urala,-4./#48./-, -8/.11 for "pen areas,2.44% 7 %ange 5km6
LINK BUDGET MARGINS
UL In!er"eren#e M$r%in &BIUL'
: is UL s'stem load that can var' etween 8 and -.
DL In!er"eren#e M$r%in &BIDL'
α 7 non#ortogonalit' factor of the cell. ;or C+<C$ calculation this is assumed to e -.;# average ratio etween the received inter#cell and intra#cell interference. At the cellorder is assumed to e 4.-=t 7 Thermal noise >#-0/ d(m?$@=f 7 =oise figure of the UE >0d(,.-%chip 7 s'stem chip rate in 2.3/M$@Lsa 7 calculated attenuation in linear units >-8Lsa?-8
'/15 MV ProgramEricsson WCDMA Link Budget Calculation
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LINK BUDGET LOSSES
Loss !67e Des#ri7!ion No!$!ionV$)>e
*B(
(od' Loss 5d(m6$anheld* )peech L(L 2$andheld* Data L(L*data 8
Car penetration loss 5d(m6Covered car* withoute&ternal antenna
LC+L 9
(uilding penetration loss 5d(m6Uran* dense uran
L(+L-3
)uuran -4
A)C loss 5d(m6 A)C loss in DL LA)C 8.4umper connection loss 5d(m6 (etween %() and A)C L FC -Antenna umper loss 5d(m6 (etween A)C and Antenna L 8.4
;eeder loss 5d(m6
LC;-?4G per -88m
L;
--LC;0?3G per -88m 9.2LC;-#-?/G per -88m /.9LC;-#?-3G per -88m 2.3
Lin; B>*%e! An!enn$ G$in &GA'
HA, UE Antenna Hain F %() Antenna Hain
UL M$@i(>( P$!=)oss &L7($@'
UL SSTEM SENSITIVIT &SUL'
=t 7 Thermal noise 5#-0/ d(m?$@6=f 7 =oise figure >4.2 d( with or 2.2 d( without A)C%info 7 <nformation it rate 5ps6E ?=o 7 Energ' per it?noise power densit' for the service 5d(m6L; 7 ;eeder loss >8 d( with A)C
5/15 MV ProgramEricsson WCDMA Link Budget Calculation
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EC ?=o 7 C+<C$ energ' per chip?noise power densit' >#-9 d(mUE DCH SENSITIVIT &SUE'
=t 7 Thermal noise >#-0/ d(m?$@=f 7 UE =oise figure >0 d( is assumed for planning%info 7 information it rate >2.3/B-89 psE ?=o 7energ' per it?noise power densit' for the service 5d(m6
2H++ C$A==EL M"DEL)C=$nne) (o*e) UE s7ee*
T'pical Uran >TU 2 km?h* 8 km?h%ural Area >%A 2 km?h* 8 km?h* -48 km?h
UL E ?=" IALUE)UL E8<No TU-: TU-0 RA-: RA-0 RA-1?0 R in"o &87s'
(/15 MV ProgramEricsson WCDMA Link Budget Calculation
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)treaming -43 F 3 .0 9. .3 0.1 0.0 -21/88AM% -4.4 F +)8 0.4 0.0 0.- 3. 3./ -988AM% -4.4 F +)9/ 9./ 0./ 9.4 3 0.3 01988AM% -4.4 F +)-43 .0 9./ . 0.2 0.2 -/2988AM% -4.4 F +)23/ 9./ 3 .1 0.0 0.0 211988
WCDMA CELL RANGE
a,-.-#48./-,-2/.91 for Urana,-/0.1#48./-, -40./1 for )uuran and semi#opened areasa,-2.3#48./-, --.21 for %urala,-4./#48./-, -8/.11 for "pen areas,2.44% 7 %ange 5km6
SITE COVERAGE AREA
"mni site! 2#sector site! 9#sector site!
Si%n$) A!!en>$!ion &Ls$'
Lpath 7 pathloss(L=; 7 log#normal fading margin for C+<C$ e&cluding soft handover* for DC$ includingsoft handover(+C 7 power control margin >8d( as C+<C$ does not use inner loop +CL( 7 od' lossLC+L 7 car penetration lossL(+L 7 uilding penetration lossL 7 umper lossHa 7 sum of UE and %() antenna gain