Huawei Airbridge BTS3606A User Manual

Technical Manual
Airbridge BTS3606A CDMA Base Station
System Description
Chapter 4 Main Functions
4-4
A cell knows whether it is selected according to the DRC Cover.
IV. Hard handoff
In the hard handoff procedure, the MS firstly interrupts the connection with the previous
cell, and then sets up the connection with the new cell. Therefore, call drop may occur.
Hard handoff includes:
l Intra-frequency hard handoff: Handoff between the BSCs without A3/A7 interface
in-between.
l Inter-frequency hard handoff: Handoff between cells serving on different
frequencies.
4.3 Radio Configuration
The Um interface of the BTS3606A supports CDMA2000 1x. It is compatible with
1xEV-DO. The spreading rate is 1.2288 Mcps.
The CDMA2000 1x physical layer supports multiple Radio Configurations (RCs).
Different radio configurations support the frames of the different rate sets, and have
different channel configurations and spreading spectrum structures.
The transmission combinations supported by the BTS3606A include:
l Forward RC1 and reverse RC1
l Forward RC2 and reverse RC2
l Forward RC3 or RC4, and reverse RC3
l Forward RC5 and reverse RC4
Each RC supports traffic channel at different data rates. The performance of the
CDMA2000 1x system varies with RCs. For example, the CDMA2000 1x system with
RC1 and RC2 is compatible with IS-95A/B.
4.4 Channel Configuration
A series of physical channels have been defined on the Um interface. These physical
channels are classified by the channel features. To support higher-rate data
transmission, the 1xEV-DO uses a channel design different from that of the CDMA2000
1x.
4.4.1 CDMA2000 1x Channel
The following shows the classification of the CDMA2000 1x channel.
I. Forward channel
The CDMA2000 1x forward channel includes Forward Common Channel and Forward
Dedicated Channel.
The Forward Common Channel is further divided into:

Huawei Airbridge BTS3606A Specifications

General

Brand	Huawei
Model	Airbridge BTS3606A
Category	Accessories
Language	English

Summary

Chapter 1 Introduction

1.1 Comparison between CDMA2000 1x and 1xEV-DO

Compares CDMA2000 1x and 1xEV-DO technologies, detailing key differences.

1.2 Huawei CDMA2000 1x / 1xEV-DO Hybrid Network Solution

Introduces the hybrid network architecture comprising Base Station Subsystem/Access Network (BSS/AN) and Core Network (CN).

1.3 Position of BTS3606A

Details the BTS3606A's role and placement within the network and its application context.

Chapter 2 Product Features

2.1 Technical Features

Lists the key technical capabilities and specifications of the BTS3606A equipment.

2.2 Large-scale Coverage

Discusses the BTS3606A's capabilities for wide area coverage, including receiver sensitivity and transmit power.

2.3 Flexible Networking Mode

Explains various networking interfaces, modes, and clock sources supported by the BTS.

2.4 Convenient Operation and Maintenance

Details system monitoring, data configuration, alarm processing, and security management functions.

2.5 Powerful Environment Adaptability

Covers protection against environmental factors, wide operating temperature range, and robust power distribution.

2.6 Easy Upgrade and Expansion

Describes the compatibility design, flexible configuration, and smooth expansion capabilities of the BTS.

2.7 Serial Products for Seamless Coverage

Lists related BTS products that enable seamless coverage across different urban, suburban, and rural areas.

Chapter 3 Product Architecture

3.1 Cabinet Physical Features

Details the physical design, dimensions, and characteristics of the BTS3606A cabinet.

3.2 Cabinet Configuration

Illustrates the internal layout and component placement within the BTS3606A cabinet.

3.3 System Structure

Outlines the main subsystems: baseband, Radio Frequency (RF), power supply, and antenna.

3.4 Physical Interface

Lists and describes the various physical interfaces of the BTS3606A for connectivity.

Chapter 4 Main Functions

4.1 Power Control and Rate Control

Explains how power and rate control mechanisms are implemented for system capacity and service quality.

4.2 Handoff

Details the different types of handoff (soft, softer, virtual soft, hard) for maintaining ongoing conversations.

4.3 Radio Configuration

Describes the radio configurations (RCs) and transmission combinations supported by the BTS.

4.4 Channel Configuration

Classifies and explains the forward and reverse channels for CDMA2000 1x and 1xEV-DO.

4.5 Multi-carrier

Explains the support for multi-carrier technology to increase system capacity.

4.6 Receiving Diversity

Details the function of receiving diversity for enhancing signal reception and quality.

4.7 Cell Breathing

Describes the cell breathing function for adjusting coverage area and balancing system load.

Chapter 5 Reliability Design

5.1 System Reliability

Covers de-rating, component selection, thermal, and EMC design aspects for overall system reliability.

5.2 Hardware Reliability

Details hardware reliability aspects including redundancy, input voltage protection, and fault monitoring.

5.3 Software Reliability

Explains software reliability measures like resource checks, process monitoring, data integrity, and fault isolation.

Chapter 6 Operation and Maintenance System

6.1 Structure of the Operation and Maintenance System

Describes the local and remote maintenance systems, including the Local Maintenance Terminal (LMT) and M2000.

6.2 Operation and Maintenance Function

Covers security management, alarm management, loading, configuration, and equipment management functions.

Chapter 7 Technical Specifications

7.1 Structure and Environment Specifications

Lists cabinet dimensions, weight, power consumption, and ambient environmental specifications.

7.2 Capacity Specifications

Details the maximum sector carrier capacity and subscriber capacity of the BTS.

7.3 Transmitter and Receiver Specifications

Provides detailed transmitter and receiver specifications across different frequency bands (450 MHz, 800 MHz, 1900 MHz).

7.4 Specifications for ODU3601C Cascading

Outlines specifications for connecting and cascading ODU3601C units for expanded coverage.

Chapter 8 Technical Standards

8.1 General Technical Specifications

Lists general technical specifications and standards compliance for the BTS3606A.

8.2 Um Interface

Details Um interface specifications, including physical layer and MAC layer standards.

8.3 Abis Interface

Lists Abis interface specifications, covering physical layer and protocol standards.

8.4 Lightning Protection

Covers compliance with lightning protection standards for equipment safety and surge protection.

8.5 Safety

Lists safety requirements and standards for information technology and electronic equipment operation.

8.6 EMC

Details electromagnetic compatibility (EMC) standards compliance for minimizing interference.

8.7 Environment

Lists environmental requirements and standards for equipment operation, storage, and transportation.

Chapter 9 Abbreviations and Acronyms

9.1 Abbreviations and Acronyms

Provides definitions for abbreviations and acronyms used throughout the technical manual.