LTE Cell Trace and UE Trace Handling
Cell Trace
• The Cell trace feature collects
events/traces for a group of cells.
It collects all events related to the
cell relations for that cell and for
the entire RBS.
• The Cell trace is the most common
form of general troubleshooting
within the network. It is possible
to analyze overall performance of
the network seeing patterns and Enodeb
trends within a large group of
Cell Trace
cells/RBSs.
OSS-RC
Activate
Trace
Enodeb Upload trace file in OSS
Enodeb
CellTrace
Activating Cell Trace
Start LTE GUI measurement
Add CTR Profile
Select LTE Cell Trace Profiles tab. Right click to add profile and select LTE Cell Trace
recording profile
Specify Details for the Cell Trace Event
1
3
Define Cell Trace name
2
Select Output Mode
as file. Streaming
option is available
but is still under
testing by AT&T HQ
Select Enodeb from list
Select all sectors in
the EnodeB or
specific sector
4
Event and UE fraction
Select the Events to be captured. Select UE Fraction – 1000 enables traces for ALL UEs
camped on that cell for each 15 minute ROP
Duration of Trace
Define duration of the trace
Activating Trace Profile
Right click on the Cell Trace Name and select Resume Profile
Verify Trace Status
Admin State and Op State of Profile should be active after resuming profile
Reading Cell Trace
In OSS Common Explorer select Network Status Perspective. Search for the Cell where
the trace was active and under the View tab you can select Traffic Recordings View.
Decoding Messages
Select the Cell Trace File, then the message type and the properties tab will show
more details
UE Trace
• The UE Trace feature is designed to allow the tracking of a single UE in the
network by means of a global identifier e.g. IMSI or IMEI.
• Each UE trace generates an event during a ROP 15 minutes period will
create its own file in the OSS with the trace reference in the name of the
file.
• There can be up to 16 simultaneous UE traces for one RBS.
• 256 simultaneous traces are supported by the OSS-RC.
Add UETR Profile
Select LTE UE Trace Profiles tab. Right click to add profile and select LTE UE Trace
recording profile
Specify Details for the UE Trace Event
subscription profile name and comment
pane
select UETR events
Profile Schedule Wizard
enter IMSI number
Activating UETR Profile
• Activation of UETR Profile is the same process
as in the Activation of the CTR Profile
Reading UE Trace
In OSS Common Explorer select Network Status Perspective. Select the root directory
for LTE and all traces will show up. Select UETR Trace Reference and Messages to view
QUESTIONS & COMMENTS