Signal quality and Signal bar mapping relationship

Ruby.Hui (阎慧茹) ruby.hui at fibocom.com
Fri Sep 4 09:58:13 UTC 2020


Hi Aleksander,
I have one question about Signal quality:
Do you know whether the UI Signal bar is RSSI related or not? If so, what information will be reported by ModemManager to determine how many semaphores the UI will display?

I get some info from ModemManager Code:
1. Signal quality= rssi*100/31, get rssi value through sending at+csq.
  I find Signal quality value influence UI signal bar show, so I guess UI Signal bar is related to RSSI.

  [cid:image002.jpg at 01D682E3.333D22C0]

2.Getting Signal quality also through mmcli ¨Cm command.

[cid:image003.jpg at 01D682E4.AD83F8F0]
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