www.huawei.com Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. HUAWEI BTS3900 Cabling Guide Standard
Oct 23, 2014
www.huawei.com
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.
HUAWEI BTS3900
Cabling Guide Standard
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page1
Introduction to 3900 series
BTS3900 GSM BTS3900A GSM DBS3900 GSM
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page2
Structure of the BTS3900 Cabinet
-48V Cabinet
1) Double radio filter unit
2) Fan box
3) GSM antenna and TMA
control module
4) Baseband unit
5) Direct current distribution
unit
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page3
Structure of the BTS3900 Cabinet
+24V or +220V Cabinet
(1) Double radio filter unit
(2) Fan box
(3) Baseband unit
(4) Direct current distribution unit
(5) Cable in/out unit
(6) Power supply unit
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page4
BBU
The typical power consumption of BBU is 35W
The weight of the BBU is 12 kg at most.
All the boards can be inserted from the front panel
The Permissible range of power input is –38.4 V DC to –57 V DC
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page5
Boards and Modules in BBU
BSBC: The universal BBU subrack backplane type C
GTMU: The GSM Transmission, Timing and Management Unit
UBFA: The universal BBU fan unit type A
UPEU: The universal power and environment interface unit
UELP: The universal E1/T1 lightning protection unit
UEIU: The universal environment interface unit
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page6
GTMU
Controls, maintains, and operates the BTS
Monitors the fan module and the power supply module in the BBU
Distributes and manages BTS clock signals
Provides the Ethernet port for terminal maintenance
Supports four E1 inputs & Ethernet port for transmission.
Provides the CPRI ports for communication with the DRFU
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page7
GTMU Ports
Port Type Corresponding Cable Description
CPRI0~
CPRI5
DLC Optical fiber between
BBU and DRFU
Connected to DRFU for the optical signal
transmission
ETH RJ45 Special Ethernet cable Terminal maintenance and commissioning
FE0 RJ45 Ethernet cable A reserved port that performs the following
function: Connects the BBU to a routing
device in the equipment room through the
Ethernet cable for transmission
FE1 DLC Optical fiber
USB USB - A reserved port that performs the following
function: Automatically upgrades the
software through the USB disk
TEST USB - Tests the output clock signals with a tester
E1/T1 DB26
male
BBU E1/T1 Provides the input and output of the four
E1/T1 signals between the GTMU and the
UELP or between the GTMU and the BSC
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page8
UBFA
The universal BBU fan unit type A (2U) (UBFA) works with the air inlet box
of the cabinet to form a ventilation circuit, thus cooling the entire cabinet
The UBFA module communicates with the GTMU to regulate the
temperature, adjust the fan speed, and report alarms. The UBFA module is
hot swappable
Indicato
r
Color Status Description
STATE
Green Fast flash(0.25s
on,0.25s off)
Can not communicate
with the board and
there is no alarm
generated
Red On There is alarm
Green Slow flash(1s
on, 1s off)
Runs normally
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page9
UPEU
The universal power and environment interface unit type A (–48 V)
(UPEU) supports the –48 V DC power input, supplies power to the
boards, modules, and fan in the BBU, and provides access to multiple
environment monitoring signalsPort Type Description
MON0 RJ45 Provides the input and output of
the externally collected
environment monitoring signals to the GTMU according to the RS485
communications protocol
MON1 RJ45 Same as MONO0
EXT-
ALM0
RJ45 Transmits the externally collected
environment monitoring signals to
the GTMU through communications protocol related
to the dry contact
EXT-
ALM1
RJ45 Same as EXT-ALM0
PWR 3V3 -48V DC input
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page10
UEIU
UEIU is the environment interface board of BBU,it can support
multi-route monitoring signal input
UEIU is optional and is only used when more ports are needed
Port Type Description
MON0 RJ45 Provides the input and output of
the externally collected
environment monitoring signals to the GTMU according to the RS485
communications protocol
MON1 RJ45 Same as MONO0.
EXT-
ALM0
RJ45 Transmits the externally collected
environment monitoring signals to
the GTMU through communications protocol related to the dry contact
EXT-
ALM1
RJ45 Same as EXT-ALM0.
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page11
UELP
UELP is the E1/T1 signal lightening protection unit of BBU and
it can provide protection for 4 route E1/T1 signal
Port Type Relative cables Description
INSIDE DB25 male E1
transferring
cable
Transfers the four E1/T1
signals between the UELP
and the GTMU
OUTSIDE DB26 male E1/T1 cable Provides the input and
output of the four E1/T1
signals between the BBU
and the BSC
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page12
BBU Cables
Grounding cable, -48DC power cable, E1/T1 cable, E1 transferring
cable, main node alarm signal cable, FE port cable, CPRI port signal
cable and transmission cabinet monitoring cable
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page13
DCDU Panel
a: Power switch b: Power output ports
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page14
Ports of the MRFU
Type Connector Ports Description
Port for
transmitting
and
receiving
RF signals
N female
connector
ANT_TX/RXA Used in connection to the antenna subsystem
ANT_RXB
CPRI
port
SFP female
connector
CPRI0 Used in connection to the BBU, or in
connection to the upper-level cascaded
MRFU
CPRI1 Used in connection to the lower-level
cascaded MRFU
Port for
transmitting
RF signals
between
MRFUs
QMA female
connector
RX1 in Input port for diversity signals in antenna
channel 1
RX1 out Output port of diversity signals in antenna
channel 1
Power
port
7W2 power
connector
PWR Receives power input
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page15
Cable Connection of -48V Cabinet
Cable
Number
Cable Name Qua
ntity
R1-R12 RF Jumpers 12
P1-P2 External Power Cables (-48 V) 2
P3-P8 Power Cables Between the DCDU and DRFUs 6
P9 Power Cable Between the DCDU and Fan Box 1
P10 Power Cable Between the DCDU and BBU 1
P11-P12 Reserved 2
S1-S6 CPRI Signal Cables Between the BBU and
DRFU
6
S7 E1 Transfer Cable of the BBU 1
S8 Monitoring Signal Cables for the DCDU 1
S9 Monitoring Signal Cable for the Fan Box 1
S10 E1/T1 Cable of the BBU 1
Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page16
MRFU Topologies Configuration
The MRFU supports various
network topologies: star,
chain, and ring
Thank youwww.huawei.com