Re: Help To log the Data from ULSinrTrace

[Tom Henderson]

These kind of errors indicate a mismatch between the callback function (trace sink) signature and the trace source signature.

Here, you are passing SpectrumValue by value, but in the trace source, it is by reference:

   TracedCallback<uint64_t, SpectrumValue&, SpectrumValue&> m_ulSinrTrace; //!< SINR trace

So try modifying your UlSinrTrace accordingly.

- Tom

On 2/13/26 8:50 AM, Angèle Hager Hafaiedh wrote:

My aim is to log the Uplink SINR.

Has anyone met and solved  the same issue, I really don't understand the error:

https://cttc-lena.gitlab.io/nr/html/_trace_source_list.html

https://cttc-lena.gitlab.io/nr/html/classns3_1_1_nr_gnb_phy.html

________________________________________________

The error message "msg="Incompatible types. (feed to "c++filt -t" if needed)
got=CallbackImpl<void,unsigned long,ns3::SpectrumValue,ns3::SpectrumValue>
expected=CallbackImpl<void,unsigned long,ns3::SpectrumValue,ns3::SpectrumValue>", +0.000000000s -1 file=/home/ahh0879/Bureau/projet3/ns-3-dev/src/core/model/callback.h, line=612
+0.000000000s -1 file=/home/ahh0879/Bureau/projet3/ns-3-dev/src/core/model/traced-callback.h, line=132
NS_FATAL, terminating
terminate called without an active exception
"

______________________________________________

static void
UlSinrTrace (
  
  uint64_t imsi,
  SpectrumValue sinr,
  SpectrumValue interference)
{
  double avgSinr = 0.0;
  uint32_t n = 0;

  for (auto it = sinr.ConstValuesBegin ();
       it != sinr.ConstValuesEnd (); ++it)
  {
    avgSinr += (*it);
    n++;
  }

  avgSinr /= n;

  std::cout
    << Simulator::Now ().GetSeconds ()
    << " IMSI=" << imsi
    << " UL-SINR(avg,dB)=" << 10 * std::log10 (avgSinr)
    << std::endl;
    
    
    std::cout << "yaaaaaaaaay!";
    //Logging
    if (gULSinrCsv.is_open())
    {
        gULSinrCsv << Simulator::Now().GetSeconds() << ","
                       << imsi << ","
                       << sinr << ","
                       << interference << std::endl;
    }
    
    
}

//After Installation

 Config::ConnectWithoutContextFailSafe (
  "/NodeList/0/DeviceList/0/$ns3::NrNetDevice/$ns3::NrGnbNetDevice/BandwidthPartMap/0/NrGnbPhy/UlSinrTrace",
  MakeCallback (&UlSinrTrace)); 

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