MRFU Description
MRFU Description
MRFU Description
Issue
V1.7
Date
2012-07-17
Notice
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within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,
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MRFU Description
Contents
Contents
1 Introduction.................................................................................................................................... 1
1.1 Appearance ....................................................................................................................................................... 1
1.2 Physical Ports ................................................................................................................................................... 1
ii
MRFU Description
1 Introduction
Introduction
The MRFU can be used in an indoor cabinet or a protective outdoor cabinet. The MRFU can
modulate, demodulate, combine, and divide baseband and RF signals. It also processes
baseband and RF signal data. With the Software Defined Radio (SDR) technology, the MRFU
can work either in GU or GL dual-mode through software configuration modification.
1.1 Appearance
Figure 1-1 shows the appearance of the MRFU.
Figure 1-1 Appearance of the MRFU
MRFU Description
1 Introduction
Connector
Quantity
Function
RF port
DIN
Connects to an antenna
Interconnection port
for receiving RF
signals
QMA female
Common public
radio interface
(CPRI) port
SFP female
3V3
MON port
RJ45
A BBU3900 and MRFU are connected through a CPRI port using an electrical or optical
cable to transmit CPRI signals.
The BBU3900 and the MRFU are connected in dual-star topology. In this topology, the CPRI
port on the GTMU or UBRI is connected to CPRI0 on the MRFU, and the CPRI port on the
WBBP or LBBP is connected to CPRI1 on the MRFU, as shown in Figure 1-2.
Figure 1-2 Dual-star topology
MRFU Description
2 Technical Specifications
Technical Specifications
900
890915
935960
1800
17101755
18051850
17401785
18351880
18501890
19301970
18701910
19501990
1900
850
824846.5
869891.5
900
890915
935960
880915
925960
17101770
18051865
17251785
18201880
1800
MRFU Description
2 Technical Specifications
2.2 Capacity
Table 2-3 Single-mode capacity
Mode
Capacity
GSM
UMTS
LTE
Capacity
GSM + UMTS
GSM + LTE
Frequency
Band (MHz)
1-Way
Receiver
Sensitivity
(dBm)
2-Way Receiver
Sensitivity
(dBm)
4-Way Receiver
Sensitivity
(dBm)
GSM
900/1800/1900
-113
-115.8
-118.5 (theoretical
value)
UMTS
900/1900
-125.5
-128.3
-131
MRFU Description
2 Technical Specifications
Frequency
Band (MHz)
1-Way
Receiver
Sensitivity
(dBm)
2-Way Receiver
Sensitivity
(dBm)
4-Way Receiver
Sensitivity
(dBm)
GSM
900 PGSM
-113.5
-116.3
-119 (theoretical
value)
900 EGSM
-113.3
-116.1
-118.8 (theoretical
value)
1800
-113.8
-116.6
-119.3 (theoretical
value)
850
-113
-115.8
-118.5 (theoretical
value)
850
-125
-127.8
-130.5
900 PGSM
-125.5
-128.3
-131
900 EGSM
-125.3
-128.1
-130.8
900 PGSM
-106.3
-109.1
-111.8
900 EGSM
-106.1
-108.9
-111.6
1800
-106.6
-109.4
-112.1
UMTS
LTE
MRFU Description
2 Technical Specifications
The receiver sensitivity of GSM, as recommended in 3GPP TS 51.021, is measured in the central
band (80% of the entire operating band, excluding the edge band) at the antenna connector on the
condition that the channel rate is 13 kbit/s and the Bit Error Rate (BER) is not higher than 2%.
The receiver sensitivity of UMTS, as recommended in 3GPP TS 25.104, is measured in the entire
operating band at the antenna connector on the condition that the channel rate is 12.2 kbit/s and the
BER is not higher than 0.001.
The receiver sensitivity of LTE 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.
MRFU modules operating in GSM mode and in the 900 or 1800 MHz frequency band comply with
the standard EN 301 502 V9.2.1.
MRFU modules operating in GSM mode and in the 850 or 1900 MHz frequency band comply with
the standard 3GPP TS 45.005 V10.2.0 & 3GPP TS 51.021 V10.2.0.
MRFU modules operating in UMTS, LTE, or Multi-Standard Radio (MSR) mode and in 900 or 1800
MHz frequency band comply with the standard ETSI EN 301 908 V5.2.1 and 3GPP TS 37.104.
MRFU modules operating in UMTS, LTE, or Multi-Standard Radio (MSR) mode and in 850 or 1900
MHz frequency band comply with the standard 3GPP TS 37.104 V10.4.0 & TS 37.141 V10.4.0.
For the MRFU working in GSM mode, the maximum output power of each carrier on the MRFU is
60 W when the S1 configuration is applied. Note that, if the output power of 60 W is required, the
related license must be obtained.
For the MRFU V2 working in GSM mode and operating in the 900 MHz frequency band: after
design optimization, the 8PSK and GMSK modulation schemes enable the same output power for
each carrier on the MRFU V2 when the S1, S2, or S3 configuration is used. When the S4, S5, or S6
configuration is used, the license controlling the GBFD-118104 Enhanced EDGE Coverage feature
must be obtained. Otherwise, the 8PSK and GMSK modulation schemes cannot enable the same
output power for each carrier on the MRFU V2.
For the MRFU V2 working in GSM mode and operating in the 1800 MHz frequency band, the
license controlling the GBFD-118104 Enhanced EDGE Coverage feature must be obtained when the
S4, S5, or S6 configuration is used. Otherwise, the 8PSK and GMSK modulation schemes cannot
enable the same output power for each carrier on the MRFU V2.
The output power is 1 dB lesser than the standard power when the MRFU is located at a height of
3500 m to 4500m; and is 2 dB lesser than the standard power when the MRFU is located at a height
of 4500 m to 6000m.
Factors such as the site-to-site distance, frequency-reuse factor, power control algorithm, and traffic
model affect the gain achieved by dynamic power allocation. Therefore, in most cases, the network
planning can be based on the power specification achieved by dynamic power allocation.
In power sharing mode, the power control and DTX functions must be enabled. In GBSS8.1, the
dynamic power sharing feature is mutually exclusive with the GBFD-113201 Concentric Cell,
GBFD-114501 Co-BCCH Cell, GBFD-118001 BCCH Dense Frequency Multiplexing, and
GBFD-117501 Enhanced Measurement Report (EMR) features. In GBSS9.0 and later versions, the
dynamic power sharing feature can be used together with these features. However, the dynamic
power sharing feature currently cannot be used together with the GBFD-117002 IBCA (Interference
Based Channel Allocation), GBFD-117001 Flex MAIO, GBFD-118701 RAN Sharing, and
GBFD-114001 Extended Cell features in GBSS8.1, GBSS9.0, and later versions.
MRFU Description
2 Technical Specifications
Table 2-7 Typical MRFU V1 configuration (900 MHz/1800 MHz/1900 MHz, single-mode)
Number of
GSM Carriers
Number of
UMTS
Carriers
Output Power
per GSM
Carrier (W)
Output
Sharing
Power per
GSM Carrier
(W)
Output Power
per UMTS
Carrier (W)
60
60
40
40
27
31
20
27
12
20
10
16
60
40
3*
27*
4*
20*
Table 2-8, Table 2-9, and Table 2-10 list the typical configurations of the MRFU V2.
Two MRFU V2 modules are required to enable MIMO on the UMTS side.
Table 2-8 Typical MRFU V2 configuration (850 MHz/900 MHz/1800 MHz, single-mode)
Number
of GSM
Carriers
Number
of UMTS
Carriers
Number
of LTE
Carriers
Output
Power
per
GSM
Carrier
(W)
Output
Sharing
Power
per GSM
Carrier
(W)
Output
Power per
UMTS
Carrier
(W)
Output
Power per
LTE
Carrier
(W)
60
60
40
40
27
31
20
27
16
20
12
20
60
2 x 60
MRFU Description
2 Technical Specifications
Number
of GSM
Carriers
Number
of UMTS
Carriers
Number
of LTE
Carriers
Output
Power
per
GSM
Carrier
(W)
Output
Sharing
Power
per GSM
Carrier
(W)
Output
Power per
UMTS
Carrier
(W)
Output
Power per
LTE
Carrier
(W)
40
2 x 40
3*
27*
3*
2 x 27*
4*
20*
4*
2 x 20*
1 (1T2R)
1 x 60
Number of
UMTS Carriers
40
40
20
40
31
20
20
20
12
20
10
20
40
20
20
20
16
10
10
20
10
10
MRFU Description
2 Technical Specifications
When there are no more than three GSM carriers, LTE bandwidth can be 1.4, 3, 5, 10, or 15
MHz in the 900 MHz frequency band or be 5, 10, or 15 MHz in the 1800 MHz frequency
band.
Two MRFU V2 modules are required to enable MIMO on the LTE side.
Number of LTE
Carriers
40
30
30
40
27
20
20
30
20
20
12
20
10
20
MRFU Description
2 Technical Specifications
The typical power consumption and the maximum power consumption are measured when the base
station works at a temperature of 25C.
The typical power consumption for GSM is reached when the base station works with 30% load and
power control and DTX are enabled. The maximum power consumption for GSM is reached when
the base station works with 100% load.
The typical power consumption for UMTS is reached when the base station works with 40% load.
The maximum power consumption for UMTS is reached when the base station works with 100%
load.
The power consumption for GSM is calculated based on the sharing power.
The typical power consumption for LTE is reached when the base station works with 50% load. The
maximum power consumption for LTE is reached when the base station works with 100% load.
The LTE power consumption is calculated based on 2 x 2 MIMO configuration. Two MRFUs are
configured in each sector.
Configuration
Output Power
per Carrier (W)
Typical Power
Consumption
(W)
Maximum
Power
Consumption
(W)
GSM
S2/2/2
20
700
900
S4/4/4
27
950
1350
S6/6/6
16
840
1180
3x1
20
540
670
3x2
20
800
1020
3x3
20
1040
1330
3x4
20
1150
1450
GSM S2/2/2 +
UMTS 3 x 1
GSM: 20
1150
1440
GSM S4/4/4 +
UMTS 3 x 1
GSM: 15
970
1260
GSM S4/4/4 +
UMTS 3 x 2
GSM: 10
930
1190
UMTS
GSM +
UMTS
UMTS: 40
UMTS: 10
UMTS: 10
10
MRFU Description
2 Technical Specifications
Table 2-12 Power consumption of the BTS3900 (-48V) (configured with MRFU V2, 900 MHz)
Mode
Configuration
Output Power
per Carrier (W)
Typical Power
Consumption
(W)
Maximum
Power
Consumption
(W)
GSM
S2/2/2
20
620
730
S4/4/4
20
810
1130
S6/6/6
12
710
1025
3x1
20
595
650
3x2
20
630
800
3 x 10 MHz
2 x 60
1185
1270
UMTS
LTE
Table 2-13 Power consumption of the BTS3900 (-48V) (configured with MRFU V2, 1800 MHz)
Mode
Configuration
Output Power
per Carrier (W)
Typical Power
Consumption
(W)
Maximum
Power
Consumption
(W)
GSM
S2/2/2
20
640
750
S4/4/4
20
820
1140
S6/6/6
12
685
1100
3 x 10 MHz
2 x 60
1230
1355
LTE
Configuration
Output Power
per Carrier (W)
Typical Power
Consumption
(W)
Maximum
Power
Consumption
(W)
GSM
S2/2/2
20
800
1040
S4/4/4
27
1070
1540
S6/6/6
16
950
1340
3x1
20
660
840
3x2
20
950
1220
3x3
20
1210
1560
UMTS
11
MRFU Description
2 Technical Specifications
GSM +
UMTS
3x4
20
1340
1700
GSM S2/2/2 +
UMTS 3 x 1
GSM: 20
1340
1690
GSM S4/4/4 +
UMTS 3 x 1
GSM: 15
1140
1490
GSM S4/4/4 +
UMTS 3 x 2
GSM: 10
1100
1410
UMTS: 40
UMTS: 10
UMTS: 10
Table 2-15 Power consumption of the BTS3900A (AC) (configured with MRFU V2, 900 MHz)
Mode
Configuration
Output Power
per Carrier (W)
Typical Power
Consumption
(W)
Maximum
Power
Consumption
(W)
GSM
S2/2/2
20
620
730
S4/4/4
20
810
1130
S6/6/6
12
710
1025
3x1
20
595
650
3x2
20
630
800
3 x 10 MHz
2 x 60
1185
1270
UMTS
LTE
Table 2-16 Power consumption of the BTS3900A (AC) (configured with MRFU V2, 1800 MHz)
Mode
Configuration
Output Power
per Carrier (W)
Typical Power
Consumption
(W)
Maximum
Power
Consumption
(W)
GSM
S2/2/2
20
640
750
S4/4/4
20
820
1140
S6/6/6
12
685
1100
3 x 10 MHz
2 x 60
1230
1355
LTE
12
MRFU Description
2 Technical Specifications
Configuration
Output Power
per Carrier (W)
Typical Power
Consumption
(W)
Maximum
Power
Consumption
(W)
GSM
S2/2/2
20
745
960
S4/4/4
27
995
1410
S6/6/6
16
885
1240
3x1
20
585
730
3x2
20
845
1080
3x3
20
1085
1390
3x4
20
1195
1510
GSM S2/2/2 +
UMTS 3 x 1
GSM: 20
1195
1500
GSM S4/4/4 +
UMTS 3 x 1
GSM: 15
1015
1320
GSM S4/4/4 +
UMTS 3 x 2
GSM: 10
975
1250
UMTS
GSM +
UMTS
UMTS: 40
UMTS: 10
UMTS: 10
Table 2-18 Power consumption of the BTS3900L (configured with MRFU V2, 900 MHz)
Mode
Configuration
Output Power
per Carrier (W)
Typical Power
Consumption
(W)
Maximum
Power
Consumption
(W)
GSM
S2/2/2
20
645
755
S4/4/4
20
835
1155
S6/6/6
12
735
1050
3x1
20
620
675
3x2
20
655
825
3 x 10 MHz
2 x 60
1210
1295
UMTS
LTE
13
MRFU Description
2 Technical Specifications
Table 2-19 Power consumption of the BTS3900L (configured with MRFU V2, 1800 MHz)
Mode
Configuration
Output Power
per Carrier (W)
Typical Power
Consumption
(W)
Maximum
Power
Consumption
(W)
GSM
S2/2/2
20
645
755
S4/4/4
20
835
1155
S6/6/6
12
735
1050
3 x 10 MHz
2 x 60
1210
1295
LTE
14
MRFU Description
Abbreviation
Full Name
3GPP
BBU
Baseband Unit
BER
CPRI
DTX
Discontinuous Transmission
GSM
GTMU
LBBP
LTE
MIMO
MRFU
MSR
Multi-Standard Radio
RAN
SDR
UBRI
15