Cisco Cisco Packet Data Gateway (PDG)
MME Changes in Release 17
MME Enhancements for 17.4 ▀
Release Change Reference, StarOS Release 17 ▄
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Important:
Correction in for this content: We forgot to indicate that this feature is license controlled and requires
a valid feature-specific license key. This information has been added below.
The Cell Traffic Trace feature provides a 3GPP standard-based cell trace function for tracing all calls in a single cell or
multiple cells. Cell Tracing provides the capability to log on to data on any interface at a call level for a specific user or
mobile type or a service initiated by a user. In addition, Cell Tracing provides instantaneous values for a specific event.
multiple cells. Cell Tracing provides the capability to log on to data on any interface at a call level for a specific user or
mobile type or a service initiated by a user. In addition, Cell Tracing provides instantaneous values for a specific event.
When Cell Traffic Trace is activated in the monitored cell(s) of E-UTRAN, the eNodeB starts a Trace Recording
Session for new calls/session and also for existing active calls/session. A Trace Recording Session Reference (TRSR) is
allocated by eNodeB for each of the monitored call/session. The TRSR includes the TRSR reference along with the
Trace Reference and Trace Collection Entity (TCE) address in the CELL TRAFFIC TRACE message to the MME over
S1 connection.
Session for new calls/session and also for existing active calls/session. A Trace Recording Session Reference (TRSR) is
allocated by eNodeB for each of the monitored call/session. The TRSR includes the TRSR reference along with the
Trace Reference and Trace Collection Entity (TCE) address in the CELL TRAFFIC TRACE message to the MME over
S1 connection.
Cell Traffic Trace Procedures are used at the MME to assist the TCE Server in correlating the Trace Reference
(generated by EM) and Trace Recording Session Reference (generated by the eNodeB) with the IMSI, IMEI (SV)
corresponding to the traced session as the eNodeBs only have access to temporary UE identities and not permanent
identities (IMSI, IMEI (SV)).
(generated by EM) and Trace Recording Session Reference (generated by the eNodeB) with the IMSI, IMEI (SV)
corresponding to the traced session as the eNodeBs only have access to temporary UE identities and not permanent
identities (IMSI, IMEI (SV)).
Trace Files management - Creation of Trace files, renaming and moving trace files to respective directories,
compression and archiving of trace files. The configuration for this process is discussed in the Configuring Cell Traffic
Trace section.
compression and archiving of trace files. The configuration for this process is discussed in the Configuring Cell Traffic
Trace section.
The Cell Traffic Trace feature is license controlled. Contact your Cisco Account or Support representative for
information on how to obtain a license.
information on how to obtain a license.
Previous Behavior: Compression of archived trace files was not provided in the earlier Cell Trace configuration.
New Behavior: From this release onwards, the Cell Traffic Trace configuration is modified to support compression of
the archived trace files. The present configuration also supports compression of C Type files based on the configurable
parameters.
the archived trace files. The present configuration also supports compression of C Type files based on the configurable
parameters.
Command Changes
session trace network-element
Local Storage
enb
is a new keyword that is configured as part of the Cell Traffic Trace feature. The Cell Traffic Trace feature is
configured in the Global Configuration mode.
A global template configuration for Cell Traffic Trace with network element as eNodeB, allows the operator to decide
the total disk size for storing C-type files and also the archive directory parameters (disk limit, number of files, size and
timer) before the C-type files are compressed.
the total disk size for storing C-type files and also the archive directory parameters (disk limit, number of files, size and
timer) before the C-type files are compressed.
To store the trace files locally, use the following configuration:
configure
session trace network-element enb tce-mode none collection-timer timer_value
[ no ] session trace network-element enb
end