How To Analyze 4G Lte Traffic From Your Gigastor - Network Instruments GigaStor User Manual

5. (Optional) Enable one or more search pattern modifiers:
Use regular expression(s)—Perl 5 regular expressions. For details and examples, see
www.regular-expressions.info/tutorial.html
Match case—case sensitive search
6. Type a string for the GigaStor to search for in the Call-ID Pattern.
7. Choose one of the result options:
Stop searching when one matching call is found. This provides you the results more quickly, but the
tradeoff is that if the endpoints identified by search criteria had multiple separate calls within the
timeframe selected, only the first call is extracted and any subsequent calls are excluded.
Search for all matching calls within the GigaStor analysis time range (up to the filtering limit).
8. Click OK to save your settings.
9. Choose your analysis type. The options are described in
analyzing_data_by_combining_gigastor_control_panel_and_observer_filters.html.
Expert analysis and decode
Decode without expert analysis
Third party decoder
If your search pattern found results, the results are displayed in a new tab and can be further analyzed.

How to analyze 4G LTE traffic from your GigaStor

You can isolate subscribers by IMSI or IMEI across eNodeB, SGW, or PWG using various communication paths
such as S1-MME, S1-U, S11, S5, or X2.
Prerequisite(s):
You must understand how to select a time frame from your GigaStor. See
(page 35).
Your LTE environment likely has hundreds or thousands of matrix switches. It is impractical to monitor all of
them simultaneously. Most likely, you are likely using the GigaStor as a reactive tool to subscriber complaints.
After connecting the matrix switch to the GigaStor and collecting LTE traffic, you can analyze it to determine the
problem.
1. Select a time frame you want to analyze.
2. Click the Analyze button.
3. In the Analysis Options section, choose your filter type. For details about the filter types, see
4. In the Analysis Type list, choose 4G LTE analysis.
5. Click Settings.
Option
Discard rejected devices
../observer/
Selecting a time frame to analyze
Description
Allows you to include or exclude devices rejected by
your LTE environment. There may be any number
of reasons a device may be rejected, such as the
device is not a subscriber because the device is
not compatible with your network or because the
device's owner has not paid their bill. Whether a
device is rejected is not controlled by Observer, but
rather by your LTE environment. If you are using
How to analyze 4G LTE traffic from your GigaStor | 41
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Table 3.