Chapter 2 Baseband Subsystem; Overview; Functional Structure; Introduction To Baseband Boards - Huawei Airbridge BTS3612A-1900 Technical Manual

Technical Manual
Airbridge BTS3612A CDMA Base Station

Chapter 2 Baseband Subsystem

2.1 Overview

Baseband subsystem consists of BTS Control & Clock Module (BCKM), BTS Resource
Distribution Module (BRDM), BTS Channel Processing Module (BCPM), BTS Control
Interface Module (BCIM) and Baseband Backplane (BASB).

2.1.1 Functional Structure

The functional structure of baseband subsystem is shown in Figure 2-1.
BSC
Satellite signal receiving
Other functional units
BCIM: BTS Control Interface Module
BCKM: BTS Control & Clock Module
BTRM: BTS Transceiver Module
Figure 2-1 functional structure of baseband subsystem
Baseband subsystem accesses transmission system through E1/T1 interface provided
by the BCIM so as to connect to BSC equipment. It connects to carrier units through
optical interface provided by the BRDM. Carrier units can be BTRM modules of the
same BTS, or MTRM module of the ODU3601C extended afar.

2.1.2 Introduction to Baseband Boards

Baseband subsystem is held in the baseband subrack. The full configuration of
baseband subrack is as shown in Figure 2-1
Baseband subrack supports the following boards:
BCIM
E1/T1
BCIM
antenna
BCK
BCKM
M
Chapter 2 Baseband Subsystem
BCPM
BCPM
BRD
BRDM
M
BCPM: BTS Channel Process Module
BRDM: BTS Resource Distribution Module
BSC: Base Station Controller
2-1
System Principle
Optical fiber
BTRM/ODU3601C
BTRM/ODU3601C