Meter Engineers Handbook for Cellular Communication 19
For example, a 4G LTE modem might report an RSSI of -68 dBm, but:
In this case, the signal quality is actually very poor. This could be due to the device being some distance away
from the LTE transmitter. It’s also possible that something is interfering with the signal, such as a building or other
obstructions between the device and the tower.
Ultimately, poor signal quality equals poor performance due to issues such as retransmissions. Not only does poor
signal quality degrade performance, it also adds cost to monthly data plans.
Digi TransPort Model-Specific
Mounting Instructions
If you expect to mount the Digi TransPort router inside your own enclosure, or inside the meter cabinet itself, then
use the mounting options described on the following pages.
RSRP = -102 dBm RSRQ = -16 dB SNR = -1.8 dB
7
RF Conditions RSRP (dBm) RSRQ (dB) SINR (dB)
Excellent >=-80 >=10 >=20
Good -80 to -90 -10 to -15 13 to 20
Mid Cell -90 to -100 -15 to -20 0 to 13
Cell Edge >=-100 >=-20 >=0
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