User Manual
Airbridge cBTS3612 CDMA Base Station
System Description
3 Software Architecture
3-6
7)
Log management
Equipment operations and abnormal information are recorded to help locate faults.
8)
Maintenance console interface
With the local MMI, the user can perform operation & maintenance locally to the BTS
via the Ethernet.
9)
Other functions
Other functions include active/standby switchover, debugging, etc.
3.2.3 Clock Software
I. Funciton
The primary function of the clock software is to follow the standard 1PPS pulse
signal output by the clock reference source module and GPS/GLONASS time
information output from the serial port, and generate various clock signals
synchronous with GPS/GLONASS system with the software phase-locking
algorithm.
II. Structure
Structure of clock software is shown in Figure 3-4.
Clock software
Operation &
maintenance
Service
application
Figure 3-4
Structure of clock software
III. Introduction to software units
1) Service application
This unit consists of three functional sub-modules:
l
Reference clock source serial port communication processing sub-module: the
clock software supports three reference clock sources inputs: GPS, GLONASS
and external input. The sub-module gets GPS time information from the serial
port of the clock source (the present system uses GPS clock source), and
distributes to the system via OMU.
