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CONFIDENTIAL
Estimating RF Coverage
5.4.2 RAU Coverage Distance
Use equations (1) and (2), on pages 5-13 and 5-14, respectively, to estimate the dis-
tance from the antenna to where the RF signal decreases to the minimum acceptable
level at the wireless device.
With d
0
set to one meter and path loss slope (PLS) defined as 10 n , Equation (2) can
be simplified to:
PL(d) = 20log
10
(4
π
f/c) + PLS·log
10
(d) (3)
Table 5-10 gives the value of the first term of Equation (3) (that is., (20log
10
(4
π
f/c))
for various frequency bands.
Table 5-10
Frequency Bands and the Value of the First Term in Equation (3)
Frequency
Band (MHz)
Mid-Band
Frequency
(MHz)
20log
10
(4
π
f/c)
Uplink Downlink
850 MHz Cellular 824–849 869–894 859 31.1
900 MHz GSM 890–915 935–960 92.5 31.8
900 MHz EGSM 880–915 925–960 920 31.7
1800 MHz DCS 1710–1785 1805–1880 1795 37.5
1900 MHz PCS 1850–1910 1930–1990 1920 38.1
2.1 GHz UMTS 1920–1980 2110–2170 2045 38.7