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WBBP

This describes the WCDMA Baseband Process Unit (WBBP) board of the BBU3900. The WBBPprocesses baseband signals.

Panel

The WBBP has two types of panels, as shown in Figure 1 and Figure 2.

Figure 1 Panel of the WBBPa

Figure 2 Panel of the WBBPb

Function

The WBBP has the following functions:

Providing the CPRI interface for communication between the BBU and the RRU or RFU, andsupporting the CPRI interface in 1+1 backup mode

Processing uplink and downlink baseband signals

Table 1 describes the specifications of the WBBP.

Table 1 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

LED

Table 2 describes the LEDs on the WBBP and their status.

Table 2 LEDs on the WBBP

Label Color Status Description

RUN Green ON The board has power input, yetthe board is faulty.

OFF The power supply or the board isfaulty.

1s ON, 1s OFF The board is running properly.

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0.125s ON, 0.125s OFF Software is being loaded to theboard.

ACT Green ON The board is running properly.

OFF The WBBP is not in use.

ALM Red OFF The board is running properly.

ON The board has alarms onhardware.

CPRI0/CPRI1/CPRI2 Red/green OFF The optical module is notconfigured with CPRI ports or themodule is powered off.

ON (green) The CPRI link is operational, andthe RRU hardware is functional.

ON (red) The optical module is not inposition or the CPRI link is faulty.

Blinking at 4 Hz (red, 0.125sON, 0.125s OFF)

The hardware of the RRUconnected to the CPRI link isfaulty and needs to be replaced.

Blinking at 0.5 Hz (red, 1s ON,1s OFF)

The VSWR alarm, antenna alarm,or RRU external alarm occurs onthe RRU connected to the CPRIlink.

Port

The WBBP has three ports. Table 3 describes the ports on the WBBP.

Table 3 Ports on the WBBP

Label Connector Type Data Rate Description

CPRI SFP 1.25 Gbit/s(between theBBU and theRFU)

1.25 Gbit/sor 2.5 Gbit/s(between theBBU and theRRU)

Data transmission portbetween the BBU andthe RRU, supportinginput and output ofoptical and electricalsignals

Parent topic: Boards and Module of the BBU3900

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