1. BTS3012
Product Description(for 18TRX) 12 Configuration of the BTS3012
12 Configuration of the BTS3012
About This Chapter
This part describes the principles for configuring the BTS3012. It also describes the principles
for configuring a single cabinet, combined cabinets and cabinet groups.
12.1 Configuration Principles for the BTS3012
The BTS3012 provides flexible configuration and supports hybrid topologies over multiple
frequency bands. One BTS3012 cabinet can cover up to six cells.
12.2 Typical Configuration of One BTS3012 Cabinet
This part describes the typical configuration of one BTS3012 cabinet.
12.3 Typical Configuration of BTS3012 Cabinet Groups
This part describes the typical configuration of BTS3012 cabinet groups.
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2. BTS3012
12 Configuration of the BTS3012 Product Description(for 18TRX)
12.1 Configuration Principles for the BTS3012
The BTS3012 provides flexible configuration and supports hybrid topologies over multiple
frequency bands. One BTS3012 cabinet can cover up to six cells.
Configuration Principles
Configure the BTS3012 according to the following principles:
l Use a minimum number of antennas.
l Use a minimum number of cabinets.
l Configure all the TRXs that belong to one synchronized cell in one cabinet group.
Adhere to the following principles when configuring the BTS3012 cabinets:
l If less than 18 TRXs are required in the synchronized cells of a site, use one cabinet to
configure the site.
l If more than 18 TRXs are required in the synchronized cells of a site, use cabinet groups
to configure the site.
Configuration Features
The BTS3012 has the following features in terms of configuration:
l Supports omnidirectional cell coverage and directional cell coverage
l Supports the grouping of three cabinets
l The RF TX mode supports wideband combining, PBT, transmit diversity, and non-
combining. The DTRU connected to the DFCU does not support the wideband combining
mechanism.
l The RF RX mode supports the receive diversity, independent receive, and four-way receive
diversity.
12.2 Typical Configuration of One BTS3012 Cabinet
This part describes the typical configuration of one BTS3012 cabinet.
Configuration of the DTMU
The DTMU works as a main controller in the BTS. It is configured in pairs and works in active/
standby mode. One or two DTMUs can be configured in one cabinet.
Configuration of the DATU
The DATU is the antenna and TMA control board. It is configured only when the TMA is
configured.
Configuration of the DEMU and DMLC
The DEMU and DMLC are configured only if there are six Boolean value inputs or analog alarm
inputs in the BTS3012.
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3. BTS3012
Product Description(for 18TRX) 12 Configuration of the BTS3012
Configuration of the DTRU/DDPU/DCOM/DFCU/DFCB
l To make full use of the DTRU, configure an even number of TRXs in a cabinet.
l Generally, the DDPU/DCOM is configured in the DAFU subrack.
l The DFCU/DFCB is configured in the DAFU subrack when high traffic volume and wide
coverage are required on site.
Configuration of S2/2/2
Figure 12-1 shows the cabling of RF cables in an S2/2/2 cell. The RF TX cable is blue, the RF
RX cable is red, and the combining short-circuiting signal cable is black.
Figure 12-1 Configuration of S2/2/2
DDPU DDPU DDPU
RXA1 RXA1 RXA1
RXA2 RXA2 RXA2
TX A TX A TX A
RXA3 RXA3 RXA3
RXA4 RXA4 RXA4
RXB1 RXB1 RXB1
RXB2 RXB2 RXB2
TX B TX B TX B
RXB3 RXB3 RXB3
RXB4 RXB4 RXB4
TX 1 TX 1 TX 1
IN 1 IN 1 IN 1
TCOM TCOM TCOM
IN2 IN2 IN2
TX 2 TX 2 TX 2
RXM 1 RXM 1 RXM 1
RXD 1 RXD 1 RXD 1
RXM 2 RXM 2 RXM 2
RXD 2 RXD 2 RXD 2
DTRU DTRU DTRU
Configuration of S6/6/6
Figure 12-2 shows the cabling of RF cables in an S6/6/6 cell.
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4. BTS3012
12 Configuration of the BTS3012 Product Description(for 18TRX)
Figure 12-2 Configuration of S6/6/6
12.3 Typical Configuration of BTS3012 Cabinet Groups
This part describes the typical configuration of BTS3012 cabinet groups.
Configuration of the DTMU
All the cabinets should be configured with the DTMUs when the cabinet groups are used.
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5. BTS3012
Product Description(for 18TRX) 12 Configuration of the BTS3012
Configuration of the DTRU/DDPU/DCOM/DFCU/DFCB
l In an S4 or a smaller site, use the DDPU.
l In S5-S8 sites, use the DDPU+DCOM combination mode or the DFCU.
l In S9-S18 sites, use the DDPU+DCOM or DFCU+DFCB combination mode.
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