Configuration Of Rf Modules - Huawei Airbridge BTS3612A-1900 Technical Manual

Technical Manual
Airbridge BTS3612A CDMA Base Station
Normally, redundancy is not required. If one board fails, the system will automatically
shield the faulty board. In this case, the system capacity decreases, but the service is
normal.
III. BRDM
There are two types of BRDM, namely multi-mode BRDM and single-mode BRDM.
The multi-mode BRDM is used to connect the BTRM in the cabinet, while the
single-mode BRDM is used to cascade the ODU3601C.
Providing 6 pairs of ports for leading out optical fibers, the multi-mode BRDM can be
connected with 6 BTRMs.
Providing 3 pairs of ports for leading out optical fibers, the single-mode BRDM can be
connected with three ODU3601Cs in star networking.
Table 8-2 Configuration of BRDM
configuration
Single-cabinet
configuration
Combined-cabinet
configuration
IV. BCKM
Normally, one BCKM is enough. For reliability purpose, two BCKMs can be used
(active/standby mode).
The BCKM receives GPS/GLONASS signal as clock source. When two BCKMs are
configured, two sets of independent satellite synchronization antenna & feeder
systems are required.

8.2.2 Configuration of RF Modules

The radio modules include BTRM, BHPA, RLDU and CDU/DDU/DFU. The carrier
subrack and the duplexer subrack in full configuration is shown in Figure 8-2.
Cabinet Connected with
Yes
No
Yes
No
ODU3601C
One multi-mode BRDM and one
single-mode BRDM
One multi-mode BRDM
One multi-mode BRDM and one
single-mode BRDM. The number of
carrier configured for a combined
cabinet does not exceed 6.
Two multi-mode BRDMs
8-3
System Principle
Chapter 8 BTS Configuration
Configuration of BRDM