Table of Contents
Advertisement
User Manual
Airbridge cBTS3612 CDMA Base Station
3)
Re-initialization
A managed object may need to be re-initialized for some reasons (usually a fault
has occurred to the equipment or a great deal of data need to be re-configured).
Then OMC can directly send commands to make it re-initialized. Hierarchical
initialization function is provided, i.e. part of or all of boards can be reset.
OMC sends re-initialization command. The result of execution is that the specified
object will be re-initialized.
4)
Setting site control output
Some additional devices on the site, such as air-conditioner, power switch,
fire-fighting equipment and door control, need additional control paths. This function
is designed for this purpose.
OMC sends site control output command and the result of this function is that the
specified controlled object acts as required.
II. Configuration management for special devices
This function completes the configuration management of some special functional
units of BTS, including clock configuration, BCIM configuration and BRDM
configuration.
1)
Configuration of clock parameters
The function of BTS clock module is to provide radio synchronization clock. CDMA
system is a synchronized communication system, which requires strict time
synchronization between base stations. The reference time of the public CDMA
system is GPS time, but the system can also locks and synchronized to UTC
(Universal Coordinated Time). Synchronized with GPS via the local high-precision
thermostatic crystal oscillator, CLK module of the board divides the frequency to get
the internal clock signals.
To ensure normal operation of the clock module, the following data should be
configured:
Length of antenna & feeder
l
Delay is compensated according to the length of antenna & feeder and the delay of
the unit length.
Time zone
l
Default time zone is Beijing time.
Time reference
l
GPS time or UTC time may be used. If GPS time is used, there is no leap second
correction, which means that the second value is 0~ 59. If UTC is used, there is leap
second correction, i.e. the second value is 0 ~60. In one network, only one time
reference should be used.
4-27
System Description
4 System Function
Advertisement
Table of Contents
