I want to parse signals coming from 4G/5G towers to extract only the ID of the tower and the transmission time (on simplex communication: only downlink). Are these packets (or frames) sent on a regular time interval ?

  • $\begingroup$ Have you downloaded the applicable standards and studied them? Chances are, yes. But that's all in detail in the documents, and while you usually have to pay big bucks for official copies of the standard, you can also usually get your hands on draft copies for free. $\endgroup$
    – TimWescott
    Commented Dec 8, 2021 at 4:49
  • $\begingroup$ Hi! not a trivial project, I'd recommend you start with a working open source receiver and understand that. As asked, it's really not clear where from detection to synchronization to OFDM reception to channel decoding to data handling you're actually stuck, and if the question is "how to build an LTE receiver", I think that's a bit broad. $\endgroup$ Commented Dec 8, 2021 at 10:43
  • $\begingroup$ The answer is Yes. $\endgroup$
    – AlexTP
    Commented Dec 8, 2021 at 13:15
  • 1
    $\begingroup$ @MarcusMüller We are rolling out 5G SA (Standalone) in the US. I am not sure about Europe, maybe the last semester of next year. However, as the baseband processing is pretty much the same thing between 4G LTE and 5G NR, you are right that the OP can look at LTE open sources. $\endgroup$
    – AlexTP
    Commented Dec 8, 2021 at 20:41
  • 1
    $\begingroup$ @AlexTP so (as usual) my MNO will be T-Mobile next time I travel to the US :) Some things deserve to be fostered. $\endgroup$ Commented Dec 8, 2021 at 21:04


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