Power constumption in idle, when DPO is disabled

IoT Modules LTE-A Module
1

I’m using EG25-G and would like to understand more like DPO (Dynamic Power Optimization) is working to decide, whether it should be enabled or not.

I found good description of DPO for other Quectel’s modem:

Thanks for the good documentation.

I have couple questions:

  1. Is disabling DPO affecting power consumption, when GNSS is not used and enabled yet?
    For my understanding: DPO is working only, when GNSS improves power consumption only, when GNSS is used. Is it right?

  2. Does disabling DPO improves position reliability and availability, when sky view is limited or small antennas are used, satellite signals are low?

3

Thanks for the answer.

Your are right, it would be nice to have answer from Quectel’s expert about potential impact to performance and availability.

I’m mostly refer to this Quectel’s documentation about DPO:

Document states some requirements for DPO:

  1. All SVs>26 dB-Hz must have ephemeris or recent (<3.5 days) XTRA almanac corrections for those SVs.
  2. Health or UTC information is not transmitted over-the-air.
  3. Valid position and HEPE is less than 50m and also less than the users’ specified value in QoS.
  4. 6 SVs>37 dB-Hz or 4 SVs>26 dB-Hz and have almanac and health for all SVs.

There are requirements on SVs signal level. I’ve checked signals on my device and they are usually around 21db in nmea, pretty low. So it looks like DPO should be disabled in that case. Right? It would be nice to hear opinion from someone from Quectel.

4

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