Indoor Distributed Installation Of The Dbs3900; Table 2-1 Auxiliary Devices Used In The Door Distributed Installation Of The Dbs3900 - Huawei Airbridge DBS3900 Product Description

Airbridge DBS3900 CDMA Base Station
Product Description

Table 2-1 Auxiliary devices used in the door distributed installation of the DBS3900

Component
Indoor centralized
installation rack/L-shaped
support
DCDU

2.2 Indoor Distributed Installation of the DBS3900

This describes the indoor distributed installation of the DBS3900. In this mode, the major
modules are the BBU3900 and RRU3606. The BBU3900 supports -48 V DC input. The DC
RRU3606 supports -48 V DC input. The AC RRU3606 supports 220/110 V AC input. The
BBU3900 can be installed in the free space in an indoor 19" cabinet and uses the transmission
and power supply equipment that is already available in the equipment room. The RRU3606
can be installed on a wall, close to the RF antenna. In this way, the cost on the feeder is cut,
the loss on the line is reduced, and the coverage is improved.
Installation Scenarios
Figure 2-2
Issue 11 (2010-06-18)
If the DC RRU3606 works in 800 MHz, the 800 MHz band class is categorized in to bands A and
AB based on the type of the duplexer. The DC RRU3606 that works in 800 MHz AB and 450 MHz
and the AC RRU3606 cannot be installed on a rack in centralized mode.
If the cabinet in the equipment room has enough free space, the BBU3900 can be installed in the
cabinet, and the RRU3606 can be installed on a wall. In this case, the indoor centralized installation
rack is not required, and therefore the space in the equipment room is saved.
The auxiliary devices should be configured according to the actual situation in the equipment room.
shows the indoor distributed installation of the DBS3900.
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2 Solutions for the Auxiliary Devices of the DBS3900
Description
The indoor centralized installation rack or L-shaped support
is used for the BBU3900 and RRU3606 respectively. The
indoor centralized installation rack can be installed on the
ground, on a wall, or in a piled way. The L-shaped support
can be installed on the ground.
The DCDU is a DC power distribution box and supports one
-48 V power input and multiple -48 V outputs.
2-3