Overview; Bbu3900&Bbu3910 Functions - Huawei BBU3900 Description

LTE TDD
BBU3900&BBU3910 Description
1.1 BBU3900&BBU3910 Functions
1.2 Exterior of the BBU3900&BBU3910
1.3 BBU3900&BBU3910 Boards
1.4 BBU3900&BBU3910 Board Configuration
1.1 BBU3900&BBU3910 Functions
A BBU3900&BBU3910 is a baseband unit that performs the following functions:
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Compared with the BBU3900, the BBU3910 has enhanced backplane switching capabilities:
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Issue 01 (2018-02-05)
Provides S1 ports for communication between an E-UTRAN NodeB (eNodeB) and an
MME/S-GW, and X2 ports for communication between eNodeBs. E-UTRAN is short for
evolved universal terrestrial radio access network.
Provides common public radio interface (CPRI) ports for communication with RRUs and
processes uplink and downlink baseband signals. RRU is short for remote radio unit.
Manages the eNodeB through operation and maintenance (OM) and signaling message
processing.
Provides an OM channel to the local maintenance terminal (LMT) or U2000. iManager
U2000 (U2000). The U2000 is an integrated OM system designed by Huawei.
Provides clock ports for clock synchronization, alarm monitoring ports for environment
monitoring, and a Universal Serial Bus (USB) port for commissioning using a USB flash
drive. The security of the USB port is ensured by encryption.
In the BBU3900, no direct route is available between slots 0, 1, 4, and 5, and data
between them must be transferred by slot 2 or 3. In the BBU3910, however, data can be
directly exchanged between slots 0 through 5.
Figure 1-1 shows the slot connections in the BBU3900 and BBU39010.
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Overview

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