How to trace UE by IMSI in E******* RNC

[Tomas Delgado]

Hello i downloaded a trace guide of e******* but didnt understand how it works. Does somebody knows how to use it.

[liukang]

Hello i downloaded a trace guide of e******* but didnt understand how it works. Does somebody knows how to use it.

You need perform some command on RNC to call trace. Two year ago, i already call traced by IMSI but for ALU system (CDMA). But i think procedures are same.

[s52d]

Hello i downloaded a trace guide of e******* but didnt understand how it works. Does somebody knows how to use it.

Hi!

UETR is called. Just scan Alex for UETR.

From OSS, select UTRAN performance measurement, then you can set
what is traced (IMSI + events to be traced).
After trace is finished, you can decode it via OSS or external app (if you have it).
It is probably optional feature ;-)

You can do it per cell (CTR) or per RNC (GPEH).

BR
s52d

[tsiz]

Hello i downloaded a trace guide of e******* but didnt understand how it works. Does somebody knows how to use it.

moshell to the RNC and try this command--

uer IMSI(IMSI number)

gives the last cell id the UE camped on. Ue Needs to be on active call for this to work.

[Tomas Delgado]

Thanks mate, im looking for something like tracing L3 messages per IMSI to make troubleshooting. Is this possible with moshell

[nicodrey]

You can indeed trace an imsi directely on the rnc using moshell.

You need to activate the trace you need on the diffferent board and specify the imsi. be carefull to make selective traces otherwise you may overload the cpu... Advantage is that this is real time trace.
If you don't need real time trace I recommend you to use UETR tool from the OSS. No risk to activate a trace that can overload the rnc board as OSS UETR only allow you to make selective traces.

See this thread, you have plenty example of traces : Moshell training

Then using the decoder perl script that you can find on the forum, you will be able to decode the trace.
Decoder can be found in this thread : Decoder

If you need more information, let me know.

Cheers

[Tomas Delgado]

Thanks a lot mate, im starting to learn this.