Upload
lhgoul
View
61
Download
4
Tags:
Embed Size (px)
Citation preview
MAPPING ASSET STANDARD
MACRO CELL PROPAGATION
MODEL TO ATOLL SPM
By
Marvin Sanchez Garache
PhD. in Radio Communication Systems
PROBLEM DEFINITION:
Many operators utilize Asset3G as Radio Network
Design Tool and the Standard Macro-cell
Propagation Model (SMP). The operators usually
have tuned radio propagation models for SMP
therefore, if we need to use Atoll for optimization or
radio network design, an appropriate model
mapping is needed.
Dr. M.S. Garache 2
OBJECTIVE
Dr. M.S. Garache 3
SUMMARY
This summarize the mapping:
(Asset)(atoll)
(Asset)(Asset)(atoll)
K2K2
K2*3K1K1
(asset)(atoll)
(Asset)(Atoll)
(asset)(asset)(atoll)
K6K5
K7K4
3K6K5K3
0Khill
.considered are lossesclutter if 0or 1
K4*117.0K3K6 (asset)(asset)(atoll)
Kclutter
Dr. M.S. Garache 4
PROOF
Dr. M.S. Garache 5
STANDARD PROPAGATION MODEL (ATOLL) (1/2)
The receive power in STM Atoll’s model is computed
by:
The path losses are given by:
loshill,clutterrxeff6
txeff5
4txeff321loss
Kf(clutter)*KH*K
)log(H*log(d)*K
nDiffractio*K)log(H*Klog(d)*KKP
losstxrx P-PP
Dr. M.S. Garache 6
STANDARD PROPAGATION MODEL (ATOLL) (2/2): Where:
PR : received power (dBm)
PTx:: transmitted power (EIRP) (dBm)
K1 : constant offset (dB)
K2 : multiplying factor for log(d)
d : distance between the receiver and the transmitter (m)
K3 : multiplying factor for log(HTxeff)
Htxeff : effective height of the transmitter antenna (m)
K4 : multiplying factor for diffraction calculation. K4 must be a positive number
Diffraction : losses due to diffraction over an obstructed path (dB)
K5 : multiplying factor for log(HTxeff)log(d)
K6 : multiplying factor for HRxeff
K7 : multiplying factor for log(HRxeff)
Hrxeff : mobile antenna height (m)
Kclutter : multiplying factor for f(clutter)
f(clutter) : average of weighted losses due to clutter
Khill, LOS : corrective factor for hilly regions (=0 in case of NLOS) Dr. M.S. Garache 7
STANDARD MACRO CELL MODEL
(ASSET) The receive power is computed by
Prx = 𝑃𝑇𝑥−𝑃𝐿𝑜𝑠𝑠
The path losses are given by:
𝑃𝐿𝑜𝑠𝑠 = 𝐾1 + 𝐾2 log 𝑑 + 𝐾3 𝐻𝑚𝑠 + 𝐾4 log 𝐻𝑚𝑠
+ 𝐾5𝑙𝑜𝑔 𝐻𝑒𝑓𝑓 + 𝐾6log(𝐻𝑒𝑓𝑓)log(𝑑) + 𝐾7𝑑𝑖𝑓𝑓
+ 𝐶𝐿𝑜𝑠𝑠
where
d : distance between the BS and MS (in kms)
𝐻𝑚𝑠 : height of mobile station from ground
𝐻𝑒𝑓𝑓 : effective BS antenna height
diff : diffraction loss
𝐾1 and 𝐾2 : intercept and slope
𝐾3 : mobile antenna height factor
Dr. M.S. Garache 8
𝐾4 : okumura hata multiplying factor for Hms
𝐾5 : effective antenna height gain
𝐾6 : okumura hata type multiplying factor for
log(Heff) log(d)
𝐾7 : diffraction
𝐶𝐿𝑜𝑠𝑠: clutter loss (height and separation is also
included)
Dr. M.S. Garache 9
RELATED PARAMETERS
ATOLL ASSET
Hrxeff Hms
Htxeff Heff
Diffraction Diff
d(m) d(km)
Kclutter*f(clutter) C_Loss
Dr. M.S. Garache 10
MAPPING K2 AND K1 FOR ATOLL GIVEN ASSET
(Asset)(Asset)(atoll)(atoll)(atoll)(Asset)
(Asset)(atoll)
(atoll)(atoll)(atoll)(Asset)(Asset)
(atoll)(atoll)(Asset)(Asset)
K2*3K1K1K2*3K1K1
K2K2
log(dkm)*K2)K2*3(K1log(dkm)K2K1
3][log(dkm)K2K1log(dkm)K2K1
3log(dkm)log(dm)
10^3]*log[d(km)log(dm)
The distance in atoll is given in meters and in Asset Standard Macrocell
model is given in kilometers, the:
Using that relation we can find the mapping for k1 and k2
Dr. M.S. Garache 11
ATOLL DIFFRACTION FACTOR K4
We should use the same diffraction model
therefore (e.g. Millington or Epstein &
Pettersson):
(asset)(atoll) K7K4
Dr. M.S. Garache 12
MAPPING FOR K5 AND K3 IN ATOLL
)log(HtxeffK5g(Htxeff)log(dkm)loK6)log(Htxeff*K3)log(Htxeff*3][log(dkm)*K5 (asset)(asset)(atoll)
(asset)(asset)(atoll)
(asset)(atoll)
(asset)(asset)(atoll)(atoll)
(atoll)
3K6K5K3
K6K5
log(Htx)K5g(Htxeff)log(dkm)loK6f)]log(Htxef3K5[K3
)log(Htxeff*log(dkm)*K5
Here again we use the distance relation in kilometers:
Then
Dr. M.S. Garache 13
MAPPING FOR ATOLL K6
This is related to the MS height:
Since Asset does not use the log(Hm) we uassume
the MS heigh of 1.5 meters :
log(Hms)*K4 Hms K3 Hms K6 (Asset)(asset)(atoll)
(asset)(asset)(atoll)
(asset)(asset)(atoll)
(asset)(asset)(atoll)
K4*117.0K3K6
(1.5)][log(1.5)/K4K3K6
(Hms)][log(Hms)/K4K3K6
Dr. M.S. Garache 14
KCLUTTERATOLL
Kclutter=1
If clutter losses are considered in Asset the the
mapping must be fit into f(clutter) as in C_Loss
for Asset
Dr. M.S. Garache 15
SUMMARY
ASSET STANDARD MACROCELL TO ATOLL SPM
This summarize the mapping:
Dr. M.S. Garache 16
(Asset)(atoll)
(Asset)(Asset)(atoll)
K2K2
K2*3K1K1
(asset)(atoll)
(Asset)(Atoll)
(asset)(asset)(atoll)
K6K5
K7K4
3K6K5K3
0Khill
.considered are lossesclutter if 0or 1
K4*117.0K3K6 (asset)(asset)(atoll)
Kclutter
MAPPING EXAMPLE
Valores K ASSET ATOLL
K1 140.6 5.9
K2 44.9 44.9
K3 -2.55 5.83
K4 0 0.7
K5 -13.82 -6.55
K6 -6.55 -2.55
K7 0.7
Kclutter 1
Dr. M.S. Garache 17