l Provides the CPRI interface for communication between the BBU and the RRU or RFU,
and supports the CPRI interface in 1+1 backup mode.
l Processes uplink and downlink baseband signals.
l The WBBPd supports interference cancellation (IC) within the board.
l When installed in slot 2 or slot 3, the WBBPd supports the IC function of uplink data.
Table 3-7 describes the specifications of the WBBP.
Table 3-7 Specifications of the WBBP
Board Number of Cells UL CE Number DL CE Number
WBBPa 3 128 256
WBBPb1 3 64 64
WBBPb2 3 128 128
WBBPb3 6 256 256
WBBPb4 6 384 384
WBBPd1 6 192 192
WBBPd2 6 384 384
WBBPd3 6 256 256
LEDs
The WBBPa and WBBPb provide three LEDs indicating the status of the SFP links, and the
LEDs are positioned below the SFP ports. The WBBPd provides six LEDs indicating the status
of the SFP links, and the LEDs are positioned above the SFP ports.
Table 3-8 describes the LEDs on the WBBP and their status.
Table 3-8 LEDs on the WBBP and their status
Label
Color Status Description
RUN Green ON The board has power input, yet
the board is faulty.
OFF The power supply or the board
is faulty.
Blinking (on for one second
and off for one second)
The board is running properly.
Blinking (on for 0.125 second
and off for 0.125 second)
Software is being loaded to the
board.
ACT Green ON The board is running properly.
OFF The WBBP is not in use.
BBU3900
Hardware Description 3 BBU3900 Equipment
Issue 11 (2010-11-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3-11
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