Interference in the 800 Mhz LTE, 20 Mhz bandwith

[javierinfante]

Hi TPKJ, in my network we have all technologies, GSM 900/1800, UMTS900/2100, LTE 800/2600/1800, but in this case I can ensure 100% that there wasnt any kinnd of intermodulation.
The intermodulation problems can be found very easy, the power in the another technology (interference) is increased and then the efect can be seen in the LTE (cell under interference). but here all was OK, in the FFT there was a big spike that was there for several days and suddenly it has gone.
the site was almost isolated, just covering a small village.
Many times we have interference form repeaters, but I can identify that signal, I have seen it many times, but this one was totally different, just a spike without any variations in the power.
We also have interference problems when the site is close to the train track but again we know the cause.

[dannthemann]

Hello,

Which counters can I use to check the interference in LTE?

Thanks

[tpkj]

Hello,

Which counters can I use to check the interference in LTE?

Thanks

RSSI on each antenna port before procesing
and Noise Interference (NI) of each RB in the cell 20MHz spectrum is 100 of NI of RB after processing.

[javierinfante]

Hi, it is solved now, when we have or suspect external interference we send a request to the government telecom department and they make a survey.
this time they found that the source was a radio equipment installed in a truck, after the radio was switched off the interference disappear.