Ericsson Radio Systems AB PKRC1311004-1 Manual De Usuario

Function Change

Function Change

The purpose of "Function Change" is to facilitate the reload, change or
upgrade of the RBS software and the subsequent activation of that
software. The software is downloaded from the BSC to the RBS via the
A-bis interface.

Function change incorporates the following features:

•

Rapid initial start

−

Software preloaded in the non-volatile memory of the
RBS during manufacture; permits rapid initial start.

•

Rapid restart

−

At restart of an RBS following a power failure, the
software does not have to be downloaded via the A-bis
interface to the RBS. This is because of the non-volatile
memory of the RBS.

•

Minimised software download time

−

Software is distributed internally within the RBS. Only
one copy of the software is downloaded to each RBS,
minimising the time required for software download.

•

Software download while in traffic

−

The RBS can perform download of software without
affecting normal operation. Traffic is affected only when
switching over to the downloaded software.

36.1

Concepts

File Package

A set of individual software files which
together constitute a revision of the
software required by an entire RBS or by
parts of the RBS.

File Revision

The file revision identifies a specific
software file. This includes the type of
Main RU the software is intended for
execution on as well as the software
revision.

Software file

The software necessary for a class of Main
RU and its loadable Sub-RUs. A software
file contains application software.

CMRU

Central Main Replaceble Unit. An RBS
has exactly one CMRU. In the RBS 2000
Macro hardware architecture, the DXU is
the CMRU. In the RBS 2000 Micro
hardware architecture, the DXB is the
CMRU.

EN/LZT 720 0008

R1A

2001-06-26

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