Monitor LTE EM7565 signal strength by using qmi/mbim

There is a requirement that I need to monitor the signal strength Router using Sierra EM7565.
I tried 2 methods:

  • AT command: took ~1s to get the data.
  • qmicli -d /dev/cdc-wdm0 --device-open-proxy --nas-get-signal-info
    QMI took 300-500ms to get the data.

So I wonder if there is any way to get faster? (100ms)


The operation with qmicli takes so long because we prepare a request message, send it to the device, wait for the response, and process the response message. If you want something quicker, the only thing I can think of is to prepare a custom program that enables NAS Signal Info indications and waits for them to be sent asynchronously by the device. We would be saving the time needed to send our request and wait for the modem’s response; we would just need to process the indication sent by the device.

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Yes, only this way we can optimize. Thanks