RSRP/RSRQ/SINR on WP7702

IoT Modules
1

On the WP7702 module both Verizon and R2C variants, are there any guidelines for
RSRP/RSRQ/SINR values to determine Excellent/Good/Poor etc

For example on AirVantage on one of our FX30s

RSSI -49.0RSRP -83.0 RSRQ -17.0. Shows up as Excellent. (this is LTE)

and

RSSI -99.0RSRP -118.0RSRQ -16.0 Shows up as Low (this is GSM)

From specifications -118 RSRP is cell-edge

I want to poll this and determine signal quality

Thanks

2

see if this helps:

https://www.digi.com/support/knowledge-base/understanding-lte-signal-strength-values

3

ok, I am actually using something similar, but wondered if Sierra has any documentation

Secondly, I have an FX30s with R2C sim deployed.

The RAT is default set to GSM,LTE

It did initially connected to LTE but as of now fallen back on GSM. (T-mobile)

Would it be ok to force RAT to LTE, or should the radio pick the strongest possible network available to it

Thanks

4

This is the state

root@fx30s:~# microcom /dev/ttyAT
AT!GSTATUS?
!GSTATUS:
Current Time: 118614 Temperature: 42
Modem Mitigate Level: 0 ModemProc Mitigate Level: 0
Reset Counter: 1 Mode: ONLINE
System mode: GSM PS state: Attached
IMS reg state: UNKNOWN IMS mode: Not Support
IMS Srv State: UNKNOWN SMS,UNKNOWN VoIP
GSM band: PCS1900
GSM channel: 609
GMM (PS) state:REGISTERED NORMAL SERVICE
MM (CS) state: IDLE NORMAL SERVICE

Serving cell: 711 (PCS1900 )
RX level (dBm):-100.1250 LAC: BFCD (49101)
GPRS state: GPRS READY Cell ID: 06CF (1743)

OK

5

can it register network if you force to LTE by AT!SELRAT?

Not sure if AT!SELACQ can help to switch LTE automatically, you can double check