Logical Structure Of The Dbs3900; Functional Structure Of The Bbu3900 - Huawei Airbridge DBS3900 Product Description

1 Overall Structure of the DBS3900
Type
Communicat
ion port for
the RET
antenna

1.3 Logical Structure of the DBS3900

This describes the logical structure of the DBS3900.

1.3.1 Functional Structure of the BBU3900

The BBU3900 implements system resource management, operation and maintenance,
environment monitoring, and service processing.
1.3.2 Logical Structure of the RRU3606
This describes the logical structure of the RRU3606, which is used for up-conversion and
down-conversion of signals and for power amplification.
1.3.1 Functional Structure of the BBU3900
The BBU3900 implements system resource management, operation and maintenance,
environment monitoring, and service processing.
The BBU3900 performs the following functions:
1-12
Name
ANT_RXB
RX_IN/OU
T
RET/PWR_
SRXU
Providing external ports
Providing the Abis interface and processing Abis interface protocols
−
Interfacing with the RF subsystem and processing the Um physical layer and
−
common channel MAC layer protocols
Interfacing with the transmission system through the E1/T1/FE ports on the
−
transmission board for connection to the BSC equipment, and providing connection
to the RF module through SFP ports on the channel processing board
Modulating and demodulating baseband data, coding and decoding CDMA channels
Providing clock signals for system synchronization
Implementing resource management, operation and maintenance, and environment
monitoring for the system
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Copyright © Huawei Technologies Co., Ltd.
Airbridge DBS3900 CDMA Base Station
Description Quantity
Port for diversity 1
RX signals
Sharing main RX -
signals with other
RRU3606s
Communication -
port for the RET
antenna
Product Description
Connector Type
DIN round
waterproof
connector
2W2 connector
DB9 connector
Issue 11 (2010-06-18)