Table 6-12 Estimated Path Loss Slope For Different In-Building Environments - ADC InterReach Fusion Installation, Operation And Reference Manual

Environment Type
Open Environment
very few RF obstructions
Moderately Open Environment
low-to-medium amount of RF
obstructions
Mildly Dense Environment
medium-to-high amount of RF
obstructions
Moderately Dense Environment
medium-to-high amount of RF
obstructions
Dense Environment
large amount of RF obstructions
D-620610-0-20 Rev D
Table 6-12 shows estimated PLS for various environments that have different "clut-
ter" (that is, objects that attenuate the RF signals, such as walls, partitions, stairwells,
equipment racks, and so.).
Estimated Path Loss Slope for Different In-Building Environments
Table 6-12
Example
Parking Garage, Convention Center
Warehouse, Airport, Manufacturing
Retail, Office Space with approxi-
mately 80% cubicles and 20% hard
walled offices
Office Space with approximately
50% cubicles and 50% hard walled
offices
Hospital, Office Space with approxi-
mately 20% cubicles and 80% hard
walled offices
By setting the path loss to the maximum allowable level (PL = APL), equation (3) can
be used to estimate the maximum coverage distance of an antenna connected to an
RAU, for a given frequency and type of in-building environment.
d = 10^((APL - 20log
For reference, Tables 6-14 through 6-18 show the distance covered by an antenna for
various in-building environments. The following assumptions were made:
• Path loss Equation (4)
• 6 dBm output per carrier at the RAU output
• 3 dBi antenna gain
• RSSI design goal = –85 dBm (typical for narrowband protocols, but not for
spread-spectrum protocols)
Help Hot Line (U.S. only): 1-800-530-9960
PLS for
850/900 MHz
33.7
35
36.1
37.6
39.4
(4Sf/c))/PLS)
10
Estimating RF Coverage
PLS for
1800/1900 MHz
30.1
32
33.1
34.8
38.1
(4)
6-17
CONFIDENTIAL