Both InControl and the router web interface show detailed cellular information in several places.
But what do the acronyms and values mean? Let’s have a look.
The cellular WAN quality is one of the first things to check when cellular routers are deployed.
The following acronyms are used to indicate 3G and LTE signal quality:
|RSSI||Received Signal Strength Indicator||Signal Strength||3G and LTE|
|EC/IO||Energy to Interference Ratio||Signal Quality||3G|
|RSRP||Reference Signal Received Power||Signal Strength||LTE|
|RSRQ||Reference Signal Received Quality||Signal Quality||LTE|
|SINR||Signal to Interference-plus-Noise Ratio||Throughput||LTE|
Below is an indication of the signal interpretation.
When installing cellular solutions you are often limited by environmental factors and the available networks in the area, but by using a site survey you’ll always be able to pick the most appropriate location for the router. Additional external antennas can make a huge difference if you can’t install the router in the optimal location.
|Excellent||0-6||-70 dBm||> -90 dBm||> -9 dB||>10|
|Good||-7 to -10||-70 dBM to -85 dBm||-90 dBm to -105 dBm||-9 dB to -12 dB||6 to 10|
|Fair||-10 to -14||-86 dBm to -100 dBm||-106 dBm to -120 dBm||-12 dB to -15 dB||0 to 5|
|Poor||-14 to -20||> -100 dBM||-120 dBm||-15 dB to -20 dB||<0|
The Ninja’s View
Both InControl and the router web interface show the cellular details in several places.
We use the router’s web admin console if we need to view real-time values, because there can be a slight delay in sending these details to InControl.
We use the InControl WAN quality report for regular monitoring and fault finding.
The report shows the signal information in a selected time period and also includes latency details for the selected time-period.
This makes it possible to investigate historic issues with a cellular connection.