Ericsson Radio Systems AB PKRC1311004-1 Manual De Usuario

Restart and Recovery

CMRU

Central Main Replaceable Unit

An RBS has one CMRU.

DMRU

Distributed Main Replaceable Unit

A Main RU is distributed if it is
subordinated to the CMRU.

35.3

Function

35.3.1

Purpose

The entire RBS is brought into operation in a controlled manner. The
sequence of events is given below.

35.3.2

Description

The sequence of actions initiated is summarized below:

start CMRU-processor

start DMRU-processor

start Sub RU-processor (if any)

start CMRU basic functions

start DMRU basic functions

start Sub RU basic functions

conditional RBS DB(Data base)load

read parameters for OM bus

define OM address

link establish functions for Sub RUs connected to DMRU

link establish functions for Sub RUs connected to CMRU

update RBS database for Sub RUs connected to CMRU

link establish functions for all expected DMRUs

update RBS database for all expected DMRUs

update RBS database for Sub RUs connected to DMRU

wait for expected Passive RUs

internal configuration

check RBS operational ability

set fault indicator on all DMRUs with faults

set operation indicator on all DMRUs with no faults

set fault indicator on all Sub RUs with faults

set fault indicator on all DMRUs with faults

bring CMRU into remote operation

270 (421)

EN/LZT 720 0008

R1A

2001-06-26