3 BBU3900 Equipment
About This Chapter
This describes the BBU3900 equipment. It is a baseband unit that implements communication
between the NodeB and the RNC.
The BBU3900 has the following functions:
l Providing ports for data communication between the NodeB and the RNC
l Providing the CPRI interface for communication between the BBU and the RRU or the
RFU
l Providing USB ports, one of which facilitates the upgrading of the NodeB when a USB
disk is inserted during software installation and data configuration
l Providing OM channels between the BBU and the LMT or the M2000 to operate and
maintain the BBU
l Processing uplink and downlink baseband signals
l Managing the entire NodeB system in terms of OM and signaling processing
l Providing the system clock
3.1 Exterior of the BBU3900
The BBU3900, which has a case structure, is 19 inches wide and 2 U high.
3.2 BBU3900 Components
This section describes the boards and module of the BBU3900 in terms of their functions, ports,
LEDs, and DIP switches.
BBU3900
Hardware Description 3 BBU3900 Equipment
Issue 11 (2010-11-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
3-1
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