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