Hello all;
I have been able to capture an over-the-air LTE waveform and decoded both MIB and SIB1 from. I was able to convert the SIB1 bit to decimal but am unable to interpret my result. I have the information that the info content of SIB1 are:
PLMN identity,
Tracking area code,
Cell Id,
info on whether cell is barred or not
Intra Frequency cell reselection info,
CSG indication,
plus other ones(http://www.simpletechpost.com/2012/10/system-information-block-1.html).
the result i got after converting the SIB1 bit with matlab code:
for i=1:length(sib1{1,1})/8;
result(i) = bi2de(sib1{1,1}((1:4)+(i-1)*8,1)','left-msb');
end
disp(result);
is: 4 4 13 2 8 9 7 3 7 14 2 3 8 8 8 6 7 5 0 0 0 5 for frame 470
and
4 4 13 2 8 9 7 3 7 14 2 3 8 8 8 6 7 5 0 0 0 1 for fram 472.
Please can anyone help me with the interpretation of the values I got.
Thanks.
For this you can use an Onlineparser, which extracts the single infos out of the raw data:
Please have a look to
http://www.marben-products.com/asn.1/services/decoder-asn1-lte.html
or
http://www.3gpp-message-analyser.com/decoder/eurrc.htm
Probably you like the sedond one more, as it shows exactly which bits contain which information.
This hint is from a colleague of mine. It may be that I cannot add more to this. Nevertheless I hope it helps you.
I am more an expert for AMC boards and MicroTCA systems. My colleague is the software engineer for our wireless AMCs.
http://www.nateurope.com/products/NAMC-SDR.html
http://www.nateurope.com/products/NAMC-ODSP-W.html
Thanks to vollrath Dirksen. I used the sib1 decoded bit on the link you gave with realise 14V14.1.0 and BCCH-DL-SCH message which actually is SIB1 message I got a reasonable info that can help. Thanks a lot for the assistance!
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