RRU5905 Technical Specifications
Contents
6.1.4.3.4 RRU5905 Technical Specifications
6.3.5.3.2.1 RRU Exterior
6.3.5.3.2.2 RRU Functions
6.3.5.3.2.4 RRU Ports
6.3.5.3.2.5 RRU Indicators
6.1.4.3.4 RRU5905 Technical
Specifications
An RRU5905 is a multimode radio remote unit (RRU). Adopting the software-defined
radio (SDR) technology, an RRU5905 can work in different modes through software
configurations.
Supported RATs and Frequency Bands
The following table lists the RATs and frequency bands supported by an RRU5905.
Table 1 RATs and frequency bands supported by an RRU5905
Type
Frequency
Band (MHz)
RRU5905 1800
Receive
Frequency
Band (MHz)
Transmit
Frequency
Band (MHz)
RAT
IBW (MHz)
1710 to 1785
1805 to 1880
GSM, LTE
FDD, GL, LM
45
RF Specifications
Table 2 lists radio frequency (RF) specifications of an RRU5905.
NOTE:
•
ATBR in the Transmit and Receive Channels column indicates that this RF module has A transmit
channels and B receive channels.
•
CxD W in the Output Power column indicates that this RF module is configured with C transmit
channels and the maximum output power of each transmit channel is D W.
•
EF MSR indicates that E and F data is carried on the same transmit channel of an RF module.
•
EF non-MSR indicates that E and F data is carried on two different transmit channels of an RF module.
•
GSM receiver sensitivity is measured, as recommended in 3GPP TS 51.021, at the antenna connector
on condition that the channel rate reaches 13 kbit/s and the bit error rate (BER) is not higher than 2%.
•
LTE FDD receiver sensitivity is measured, as recommended in 3GPP TS 36.104, under a 5 MHz
channel bandwidth based on the FRC A1-3 in Annex A.1 (QPSK, R = 1/3, 25 RBs) standard.
•
NB-IoT receiver sensitivity is measured, as recommended in 3GPP TS 36.104, under a 200 KHz
channel bandwidth and a 15 KHz subcarrier spacing based on the FRC A14-1 in Annex A.14 (π/2
BPSK, R = 1/3, 1 RB) standard.
•
The typical power consumption for an RRU module is measured when the RRU load reaches 50% and
the ambient temperature is 25°C.
Table 2 RF specifications of an RRU5905
Type
Transmit Capacity
and
Receive
Channels
RRU5905 2T2R
Receiver Sensitivity
(dBm)
Output Power
Power
Consumption
for an RRU
The RRU5905
supports the
maximum power
configuration of
2x80 W. For
typical
configurations, see
900 EGSM:
370 W
900 PGSM:
370 W
1800 MHz:
370 W
Receiver
Receiver
Sensitivity Sensitivity
with One with Two
Antenna
Antennas
GSM: 8
GSM: GSM: TRXs
114.0
116.8
LTE FDD: LTE FDD: LTE FDD:
2 carriers, -106.6
-109.4
the
NB-IoT: - NB-IoT: bandwidth 127.3
130.1
per carrier
is 1.4, 3, 5,
10, 15, or
20 MHz.
NB-IoT: 1
carrier
Typical Power
Configuration for
RRUs (Excluding
NB-IoT) and NB-IoT
Typical Power
Configurations
(RRU).
Engineering Specifications
The following table lists the equipment specifications of an RRU5905.
Table 3 Equipment specifications of an RRU5905
Type
Input Power
Dimensions (H x W x D)
Weight (kg)
RRU5905
-48 V DC; voltage range:
-36 V DC to -57 V DC
400 mm x 300 mm x 100 15 (without the housing)
mm (without the housing)
NOTE:
The RRU5905 supports AC power supply when connected to an external AC/DC power module or an
OPM15M. For details, see AC/DC Power Module User Guide and OPM15M User Guide.
The following table lists the environmental specifications of an RRU5905.
Table 4 Environmental specifications of an RRU5905
Type
Operating
Temperature
RRU5905 •
•
Relative Humidity
Without solar
5% RH to 100%
radiation: -40°C RH
to +55°C
With solar
radiation: -40°C
to +50°C
Absolute
Humidity
Atmospheric
Pressure
1 g/m3 to 30 g/m3
70 kPa to 106 kPa
NOTE:
According to the installation scenario, traffic load, and carrier configuration, the output power of some
RRUs may temporarily decrease when they work within the range of 10°C higher than the allowed highest
temperature.
The following table lists the compliance standards for an RRU5905.
Table 5 Compliance standards for an RRU5905
Item
Standard
RF
•
•
•
Operating environment
3GPP TS 45.005
3GPP TS 36.141
3GPP TS 37.141
ETSI EN 300019-1-4 V2.1.2 (2003-04) Class 4.1: "Nonweatherprotected locations"
Table 5 Compliance standards for an RRU5905
Item
Standard
Storage environment
ETSI EN300019-1-1 V2.1.4 (2003-04) class1.2 "Weather
protected, not temperature-controlled storage locations"
NOTE:
•
•
The validity period is one year.
The product can function properly within the validity period if the
storage environment meets the preceding standards.
Shockproof protection
NEBS GR63 zone4
Ingress Protection Rating
IP65
Surge protection
•
•
•
•
•
•
•
•
•
IEC 62305-1 Protection against lightning - Part 1: General
principles
IEC 62305-3 Protection against lightning - Part 3: Physical
damage to structures and life hazard
IEC 62305-4 Protection against lightning - Part 4: Electrical
and electronic systems within structures
ITU-T K.35 Bonding configurations and earthing at remote
electronic sites
ITU-T K.56 Protection of radio base stations against
lightning discharges
ITU-T K.97 Lightning protection of distributed base stations
ETSI EN 300 253 Environmental Engineering(EE): Earthing
and bonding configuration inside telecommunications centers
YD/T 2324-2011 Lightning protection requirements and test
methods for Radio Base Stations (RBSs)
GB 50689-2011 Code for design of lightning protection and
earthing engineering for telecommunication bureaus
(stations)
Table 6 lists the surge protection specifications of ports on an RRU5905.
NOTE:
•
•
Unless otherwise specified, the surge protection specifications depend on the surge waveform of 8/20
μs.
All the surge current items, unless otherwise specified as Maximum discharge current, refer to
Nominal discharge current.
Table 6 Surge protection specifications of ports on an RRU5905
Port
Surge Protection
Mode
Surge Protection Specifications
Power supply port
Surge current
20 kA
Specifications of CPRI Ports
The following table lists the specifications of CPRI ports on an RRU5905.
Table 7 Specifications of CPRI ports on an RRU5905
Type
Number of
CPRI Ports
CPRI Data
Rate (Gbit/s)
Topology
Cascading
Level
RRU5905
2
1.25, 2.5, 4.9,
or 9.8
Star, chain, or CPRI MUX:
dual-star
• GL: 4
•
LM: 4
Maximum
Distance from
a BBU (km)
GL:
The maximum
distance from
the BBU
varies with the
types of LTE
BBPs
configured.
• When the
LBBPc, or
LBBPd1 is
configured:
20
• When the
LBBPd2,
UBBPd3,
UBBPd4,
UBBPd5,
UBBPd6,
or UBBPe
is
configured:
40
• When the
LBBPd3 is
configured
▪ 40 if the
cell
Table 7 Specifications of CPRI ports on an RRU5905
Type
Number of
CPRI Ports
CPRI Data
Rate (Gbit/s)
Topology
Cascading
Level
Maximum
Distance from
a BBU (km)
number
is less
than or
equal to
3
▪ 20 if the
cell
number
is
greater
than or
equal to
4
LM: 20
Antenna Capability
The following table lists the antenna capability of an RRU5905.
Table 8 Antenna capability of an RRU5905
Type
TMA Support
Supported RET Antenna
RRU5905
Supported
AISG2.0 and AISG1.1
NOTE:
For RF modules supporting RET antennas, the feeding voltage is 12 V and feeding current is 2.3 A.
Parent Topic: Technical Specifications of RRUs
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6.3.5.3.2.1 RRU Exterior
This section describes the exterior and dimensions of an RRU.
Figure 1 shows the exterior of an RRU.
Figure 1 RRU5905(1.8G)&RRU5905w&RRU5305(1.4G) exterior
Figure 2 RRU5905(900M) exterior
Figure 3 shows RRU dimensions.
Figure 3 RRU dimensions
You can obtain the RRU name, RRU frequency band and power supply information from
the nameplate on the cover plate. Figure 4 shows the positions of the nameplate on the
RRU.
NOTE:
The actual nameplate may differ from what is shown in the figure.
Figure 4 Positions of the nameplate
(1) Nameplate
(2) Module name
(3) Frequency band
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(4) Power supply type
6.3.5.3.2.2 RRU Functions
This section describes main functions of an RRU.
The Remote Radio Unit (RRU) consists of the high-speed interface unit, signal
processing unit, power amplifier, duplexer, extension ports, and power module.
Figure 1 shows the functional structure of an RRU5905&RRU5905w and Figure 2 shows
the functional structure of an RRU5305 (1.4G).
Figure 1 Functional structure of the RRU5905&RRU5905w
Figure 2 Functional structure of an RRU5305(1.4G)
NOTE:
For details about the extension ports, see RRU Ports.
The RRU5905 and RRU5905w provide the following functions:
•
Receives downlink baseband data from the BBU and sends uplink baseband data to
the BBU.
•
Receives RF signals from the antenna system, down-converts the signals to
intermediate frequency (IF) signals, amplifies the IF signals, performs analog-todigital conversion, and up-converts RF signals to the transmit (TX) band.
•
Multiplexes receive (RX) and TX signals on the RF channel so that these signals can
share the same antenna channel, and filters the RX and TX signals.
•
Provides a built-in Bias Tee (BT). The built-in BT couples RF signals and OOK
signals and transmits them through the TX/RX port A. The built-in BT also supplies
power to the tower mounted amplifier (TMA).
•
The RRU can work with the Monitoring Extension Box (MEB). The MEB can
transmit external RS-485 communication signals and dry node monitoring signals into
the RRU, implementing information monitoring and reporting. For details about the
MEB, see MEB06D User Guide.
•
When an RRU is equipped with an AC/DC power module, the RRU and the power
module together are called an AC RRU. For details about the AC/DC power module,
see OPM15M(Ver.B) User Guide or OPM50M(Ver.B) User Guide.
The RRU5305(1.4G) provides the following functions:
•
Receives downlink baseband data from the BBU to communicate with the BBU.
•
The transmit (TX) channel filters downlink signals, performs analog-to-digital
conversion, and up-converts RF signals to the TX band.
•
The TX channel filters TX signals.
•
Provides a built-in BT. RF ports on the RRU can transmit RF service signals. Besides,
RF port A on the RRU can use the built-in BT to output OOK signals and supply DC
power to the TMA.
•
The RRU can work with the Monitoring Extension Box (MEB). The MEB can
transmit external RS-485 communication signals and dry node monitoring signals into
the RRU, implementing information monitoring and reporting. For details about the
MEB, see MEB06D User Guide.
•
When an RRU is equipped with an AC/DC power module, the RRU and the power
module together are called an AC RRU. For details about the AC/DC power module,
see OPM15M(Ver.B) User Guide or OPM50M(Ver.B) User Guide.
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6.3.5.3.2.4 RRU Ports
This section describes ports on the RRU panels. An RRU has a bottom panel, cabling
cavity panel, and indicator panel.
Figure 1 and Figure 2 show ports on the RRU5905&RRU5905w and RRU5305 (1.4G)
panels, respectively.
Figure 1 Ports on the RRU5905&RRU5905w panels
Figure 2 Ports on the RRU5305 (1.4G) panels
Table 1 and Table 2 show ports at the bottom, ports in the cabling cavity, and indicators on
RRU5905&RRU5905w and RRU5305 (1.4G), respectively.
Table 1 Ports and indicators on the RRU5905&RRU5905w panels
Item
Silkscreen
Remarks
(1) Ports in the cabling
cavity
RTN(+)
Power supply socket, For details about RRU
power cable appearance and specifications, see
RRU Power Cable.
NEG(-)
CPRI0
Optical/electrical port 0, connected to the BBU
or an upper-level RRU
CPRI1
Optical/electrical port 1, connected to a lowerlevel RRU or the BBU
Table 1 Ports and indicators on the RRU5905&RRU5905w panels
Item
Silkscreen
Remarks
(2) Bottom ports
A T/R
TX/RX port A (4.3-10 female connector),
supporting RET signal transmission
B T/R
TX/RX port B (4.3-10 female connector)
RET
Communication port for the RET antenna,
supporting RET signal transmission
RUN
For details, see RRU Indicators.
(3) Indicator
ALM
ACT
VSWR
CPRI0
CPRI1
Table 2 Ports and indicators on the RRU5305 (1.4G) panels
Item
Silkscreen
Remarks
(1) Ports in the cabling
cavity
RTN(+)
Power supply socket, For details about RRU
power cable appearance and specifications, see
RRU Power Cable.
NEG(-)
(2) Bottom ports
(3) Indicator
CPRI0
Optical/electrical port 0, connected to the BBU
or an upper-level RRU
CPRI1
Optical/electrical port 1, connected to a lowerlevel RRU or the BBU
AT
TX port A (4.3-10 female connector),
supporting RET signal transmission
BT
TX port B (4.3-10 female connector)
RET
Communication port for the RET antenna,
supporting RET signal transmission
RUN
For details, see RRU Indicators.
ALM
Table 2 Ports and indicators on the RRU5305 (1.4G) panels
Item
Silkscreen
Remarks
ACT
VSWR
CPRI0
CPRI1
NOTE:
•
•
The port for transmitting RET signals is determined by the software.
Connect the CPRI0 port to the BBU by default in the single-mode scenario.
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6.3.5.3.2.5 RRU Indicators
This section describes six indicators on an RRU. They indicate the running status of the
RRU.
For detailed positions of RRU indicators, see RRU Ports.
Table 1 describes RRU indicators.
Table 1 RRU Indicators
Indicator
Color
Status
Meaning
RUN
Green
Steady on
The power input is available, but the board is
faulty.
Steady off
No power input is available, or the board is
faulty.
Blinking (on for 1s The board is running properly.
and off for 1s)
Blinking (on for
0.125s and off for
0.125s)
The board software is being loaded, or the
board is not working.
Table 1 RRU Indicators
Indicator
Color
Status
Meaning
ALM
Red
Steady on
Alarms are generated, and the module must be
replaced.
Blinking (on for 1s Alarms are generated. The alarms may be
caused by faults on the related board or ports.
and off for 1s)
Therefore, you need to locate the fault before
deciding whether to replace the module.
ACT
Green
Steady off
No alarms are generated.
Steady on
The board is working properly when TX
channels are enabled or software is being
loaded to a board that is not started.
Blinking (on for 1s The board is running with TX channels
and off for 1s)
disabled.
VSWR
Red
Steady off
No voltage standing wave ratio (VSWR) alarm
is generated.
Blinking (on for 1s VSWR alarms are generated on the B T/R or B
and off for 1s)
T port.
CPRI0
CPRI1
Red and
green
Steady on
VSWR alarms are generated on the A T/R or A
T port.
Blinking (on for
0.125s and off for
0.125s)
VSWR alarms are generated on the A T/R and
B T/R or A T and B T ports.
Steady green
The CPRI link is running properly.
Steady red
An optical module fails to receive or transmit
signals possibly because the optical module is
faulty or the optical fiber is broken.
Blinking red (on
for 1s and off for
1s)
The CPRI link is out of lock because of faults
on the mutual lock of dual-mode clock sources
or mismatched data rates on CPRI ports.
Steady off
The optical module cannot be detected or is
powered off.
Steady green
The CPRI link is running properly.
Table 1 RRU Indicators
Indicator
Color
Red and
green
Status
Meaning
Steady red
An optical module fails to receive or transmit
signals possibly because the optical module is
faulty or the optical fiber is broken.
Blinking red (on
for 1s and off for
1s)
The CPRI link is out of lock because of faults
on the mutual lock of dual-mode clock sources
or mismatched data rates on CPRI ports.
Steady off
The optical module cannot be detected or is
powered off.
NOTE:
VSWR indicators on RRUs providing one or more than two TX channels have two types of status:
•
•
Steady off: No VSWR alarm is generated.
Steady on: VSWR alarms are generated on one or more ports.
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