Indoor scenario with DC power supply (BBU installed on a wall)
In the -48 V DC power supply scenario, the BBU and DCDU-03B can be installed on an indoor
wall, the RRUs are remotely installed outdoors, and the DCDU-03B provides power to the BBU
and RRUs, as shown in Figure 3-11.
Figure 3-11 Indoor scenario with DC power supply (BBU installed on a wall)
Indoor scenario with DC power supply (BBU installed in a 19-inch rack)
In the -48 V DC power supply scenario, the BBU and DCDU-03B can be installed in any 19-
inch rack provided by customers, the RRUs are remotely installed outdoors, and the DCDU-03B
provides power to the BBU and RRUs. One 19-inch rack can house two BBUs and two
DCDU-03Bs, which enable the base station to work in triple mode, as shown in Figure 3-12.
DBS3900 (Ver.B)
Installation Guide 3 Installation Scenarios
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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