User's Manual

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Chapter 4 Message Flow
LTE eNB System Description v2.0 52
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Operation and Maintenance Message Flow
The operator can check and change status of eNB through the management system.
To accomplish this, eNB provides the SNMP agent function, and LSM operator
can carry out the operation and maintenance functions of eNB remotely through
the SNMP.
Moreover, operator can carry out maintenance function based on Web-EMT in the
console terminal using web browser. After connecting to telnet or SSH,
maintenance function can be carried out through the CLI.
The statistical information provided by eNB is given to operator by collection
interval.
The operation and maintenance in eNB is performed using the SNMP message
between SNMP agent in the main OAM and the SNMP manager of the LSM.
The eNB processes various operation and maintenance messages received from the
SNMP manager of the management systems. Once processed, eNB transmits their
results to the SNMP manager, and reports the events such as faults and status
changes to the SNMP manager in real-time.
The following figure shows the operation and maintenance signal flow.
Figure 28. Operation and Maintenance Signal Flow
Web-EMT
The Web-EMT is a GUI-based console terminal. It is a tool that monitors the
status of devices and performs operation and maintenance tasks by connecting
directly to eNB. The operator can run the Web-EMT using Internet Explorer,
without installing separate software. The GUI is provided using the HTTPs