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User Manual
Airbridge cBTS3612 CDMA Base Station
drivers provide basic functions for the upper layer to operate the physical devices
and for the calling by applications.
3.2 Module Description
3.2.1 Main Control Software
I. Function
The main control software is primarily used for the control of traffic flow. It
communicates with BSC through Abis interface, and with BCPM, BTRM, OMU
(operation & maintenance software) interfaces inside the BTS. BTS is connected
with BSC through the main control software, jointly performing radio resources
management on air interface.
II. Structure
The structure of the main control software is shown in Figure 3-2.
Resource
management
Figure 3-2 Structure of main control software
III. Software units
1) Resource management
This unit consists of four sub-modules:
Resource status management: When BTS resource status changes, the main
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control software reports to BSC the current status of BTS resource, which will
trigger BSC to perform logic configuration operation to BTS . At the same time,
BTS regularly reports its resource status to BSC so that the logic resource
status of BTS and BSC are consistent. Logic resources include cells, carriers ,
forward channels and reverse channels in the channel resource pool.
Resource measurement report: Main control software submits the cell public
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parameter measurement report received from BTRM to BSC. Specific
parameters include RSSI, carrier transmit power, etc.
Main control software
Cell configuration and
message update
management
3-2
Channel
Active/standby
switchover
System Description
3 Software Architecture
Operation &
maintenance
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