User's Manual

mBSC081921-12 System

Operation Manual Issue 2

1 INTRODUCTION

This document provides the basic description, application and configuration for Bravo Tech Inc.

mBSC081921-12 system. Throughout this publication,

2 THOERY OF OPERATION

2.1 System Overview

mBSC081921-12 is the economic and convenient coverage solution of DAS system which has a

fiber transport. The system consists of HU (Host unit) and RU (Remote unit). The HU is mounted in a

19” rack and are intend for use indoor environment. The RU can work in outdoor environment. The

output power of the RU is 40W. The transport between HU and RU is fiber optic. The downlink and

uplink optical signal are duplex so there is only one fiber needed.

2.2 Basic System Components

The basic components of Bravo Tech Inc. mBSC system and their functions are shown in Figure 2-1.

A basic mBSC system consists of a Host Unit (HU) and a Remote Unit (RI). The Host unit has

multiple slot assembly that mounts in a standard equipment rack. The RU consists of multiple

electronic and optical modules for supporting multiple Standards, which mounts in outdoor wall or

pole. Control and monitoring functions are provided by the Network Management System (NMS).

Remote Unit(RU)

Cellular PCS AWS

Remote Unit(RU)

Cellular PCS AWS

Remote Unit(RU)

Cellular PCS AWS

Remote Unit(RU)

Cellular PCS AWS

Host Unit

Optical Fiber

Optical Fiber Optical Fiber

Optical Fiber

Operator NMS Server

Ethernet

Figure 2-1. System Overview Structure

2.3 Host Unit Description

The HU, shown in Figure 2-3, consists of RF conditioning units (BIU) and optical TRX modules (FIU).

HU combines the 3 band downlink RF signals from BTS and converters them to optical signal. At the

same time, HU converts the uplink optical signals to RF signals and splits and filters out 3 band RF

signals.