Coverage Enhancement level incrementing period
I’m trying to figure out the timing schedule for the Coverage Enhanement levels of NB-IoT.
I can find online how this Coverage Enhancement level system works, but I cannot seem to find the exact timing for this process.
At what time after its first try to attach will a modem decide to increase the C-E level?
In case it is modem dependent, I am using the SIM7020G.
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Take this information with a grain of salt until we can get an expert on NB IoT technology to answer this question, but the CE level should be set by the modem based on the measured downlink received signal power and increased automatically when the random access preamble retransmission limit set for the current CE level by the network has been reached.
How long it takes to reach this limit depends on the limit and the period between retries (waiting for the network’s random access response).