User's Manual

Confidential

Chapter 2 LTE eNB Overview

LTE eNB System Description v2.0 22

resource considering the neighbor cells. The operation for optimizing

parameters related to the RACH is for estimating the RACH resources, such as

time resource and subscriber transmission power required for random access,

that change depending on time, and for optimizing the related parameters.

 Mobility Load Balancing (MLB)

The MLB function monitors the cell’s load. If the load status satisfies the

MLB execution condition specified by the operator, this function moves a part

of the traffic to a neighbor cell through network-initiated HO. The MLB

execution condition is divided into load equalization condition among multiple

carriers, and the overload condition of a cell.

Easy Operation and Maintenance

The eNB interworks with management systems such as LSM, Web-EMT, and CLI.

It provides the following maintenance functions:

 System initialization and restart

 System configuration management

 Management of fault/status/diagnosis for system resources and services

 Management of statistics on system resources and various performance data

 Security management for system access and operation

Graphics and Text Based Console Interfaces

The LSM manages all eNBs in the network using Database Management System

(DBMS). The eNB also interworks with console terminal to allow the operator to

connect directly to the Network Element (NE), rather than through LSM, and

perform the operations and maintenance.

The operator can use the graphics-based console interface (Web-EMT, Web-based

Element Maintenance Terminal) or the text-based Command Line Interface (CLI)

according to user convenience and work purposes. Also, they can access the

console interfaces without additional software. In case of Web-EMT, the operator

can log in to the system using Internet Explorer. In case of CLI, the operator can

The operator can perform the management of configuration and operational

information, management of fault and status, and monitoring of statistics and so on.

To grow/degrow resources or configure a neighbor list that contains relation of

multiple NEs, the operator needs to use the LSM.

Operator Authentication Function

The eNB provides the authentication and privilege management functions for the

system operators.

The operator accesses eNB using their account and password via the CLI.

At this time, eNB allows the operator an operation privilege by the operator’s level.