MRFU Description V1.5

MRFU Description

Issue V1.5

Date 2011-09-28

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial BaseBantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

Issue V1.5 (2011-09-28) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co.,

Ltd

i

mailto:[email protected]

http://www.huawei.com/

MRFU Description Contents

Contents

1 Introduction.....................................................................................11.1 Appearance......................................................................................................................................................11.2 Physical Ports..................................................................................................................................................2

2 Technical Specifications......................................................................32.1 Frequency Band..............................................................................................................................................32.2 Capacity............................................................................................................................................................42.3 Receiver Sensitivity........................................................................................................................................42.4 Output Power...................................................................................................................................................62.5 Power Consumption.....................................................................................................................................10

2.5.1 Power Consumption of the BTS3900...............................................................................................102.5.2 Power Consumption of the BTS3900A............................................................................................122.5.3 Power Consumption of the BTS3900L.............................................................................................132.5.4 Power Consumption of the BTS3900AL..........................................................................................14

3 Acronyms and Abbreviations...............................................................................16


Ltd

ii

MRFU Description 2 Introduction

1 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 AppearanceFigure 1-1 shows the appearance of the MRFU.

Figure 1-1 Appearance of the MRFU


Ltd

1

MRFU Description 2 Introduction

1.2 Physical PortsTable 1-1 shows the physical ports on the MRFU.

Table 1-1 Physical ports on the MRFU

Port Connector Quantity Function

RF port DIN 2 Connects to an antenna

Interconnection port for receiving RF signals

QMA female 2 Connects to the another RF module

Common public radio interface (CPRI) port

SFP female 2 Connects to the baseband unit (BBU3900)

Power supply socket

3V3 1 Receives -48 V DC power

MON port RJ45 1 Port for monitoring and maintenance

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


Ltd

2

MRFU Description 2 Technical Specifications

2 Technical Specifications

2.1 Frequency BandTable 2-1 MRFU V1 frequency band

Frequency Band (MHz)

RX Frequency Band (MHz) TX Frequency Band (MHz)

900 890–915 935–960

1800 1710–1755 1805–1850

1740–1785 1835–1880

1900 1850–1890 1930–1970

1870–1910 1950–1990

Table 2-2 MRFU V2 frequency band

Frequency Band (MHz)

RX Frequency Band (MHz) TX Frequency Band (MHz)

850 824–846.5 869–891.5

900 890–915 935–960

880–915 925–960

1800 1710–1770 1805–1865

1725–1785 1820–1880


Ltd

3


2.2 CapacityTable 2-1 Single-mode capacity

Mode Capacity

GSM Each MRFU supports 6 TRXs.

UMTS Each MRFU supports 4 TRXs.

LTE MRFU V1 (1800 MHz): Each MRFU V1 (1800 MHz) supports 1 TRX. The LTE bandwidth is 3, 5, or 10 MHz.

MRFU V2 (900 MHz): Each MRFU V2 (900 MHz) supports 1 TRX. The LTE bandwidth is 1.4, 3, 5, 10, 15, or 20 MHz.

MRFU V2 (1800 MHz): Each MRFU V2 (1800 MHz) supports 1 TRX. The LTE bandwidth is 5, 10, 15, or 20 MHz.

Table 2-2 Dual-mode capacity

Mode Capacity

GSM + UMTS MRFU V1 (900 MHz): For detailed specifications, see 2.4.1 Table 2-2.

MRFU V2 (850 MHz/900 MHz): For detailed specifications, see 2.4.1 Table 2-5.

GSM + LTE MRFU V1 (1800 MHz): For detailed specifications, see 2.4.1 Table 2-3. LTE bandwidth is 3, 5, or 10 MHz. GSM plus LTE bandwidth must be less than 15 MHz and LTE bandwidth must not exceed 10 MHz.

MRFU V2 (900 MHz/1800 MHz): For detailed specifications, see 2.4.1 Table 2-6.

2.3 Receiver SensitivityTable 2-1 MRFU V1 receiver sensitivity

Mode Frequency Band (MHz)

1-Way Receiver Sensitivity (dBm)



GSM 900 PGSM/1800 -113 -115.8 -118.5

UMTS 900 PGSM/1800 -125.5 -128.3 -131


Ltd

4


Table 2-2 MRFU V2 receiver sensitivity

Mode Frequency Band (MHz)




GSM 900 PGSM -113.5 -115.8 -118.5

900 EGSM -113.3 -116.1 -118.8

1800 -113.8 -116.6 -119.3

UMTS 900 PGSM/1800 -125.5 -128.3 -131

900 EGSM -125.3 -128.1 -130.8


Ltd

5


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 should be obtained from the LTE marketing personnel.

2.4 Output Power

MRFU modules operating in GSM mode and in the 900 or 1800 MHz frequency band comply with the srandard EN 301 502 V9.2.1.

MRFU modules operating in GSM mode and in the 850 or 1900 MHz frequency band comply with the srandard 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.

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 S1, S2, S3, S4, S5, and S6, the GSM output power in 8PSK mode is the same as that in GMSK mode with the improvement in the hardware capability. For S7 and S8, the GSM output power in 8PSK mode is the same as that in GMSK mode with the optional feature Enhanced EDGE Coverage enabled.

*: The UMTS mode is supported in terms of hardware. 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, power sharing cannot be used together with functions concentric cell, Co-BCCH, tight BCCH frequency reuse, or enhanced measurement report. In GBSS9.0, power sharing can be used together with functions concentric cell, Co-BCCH, tight BCCH frequency reuse, and enhanced measurement report. In GBSS8.1 and GBSS9.0, power sharing cannot be used together with IBCA, dynamic MAIO, RAN sharing, or double-slot cell.

Power sharing assumes a random distribution of UEs in the cell.

Table 2-1, Table 2-2, and Table 2-3 list the typical configurations of the MRFU V1.


Ltd

6


Table 2-1 Typical MRFU V1 configuration (900 MHz/1800 MHz/1900 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)

1 0 0 60 60 0 0

2 0 0 40 40 0 0

3 0 0 27 31 0 0

4 0 0 20 27 0 0

5 0 0 12 20 0 0

6 0 0 10 16 0 0

0 1 0 0 0 60 0

0 2 0 0 0 40 0

0 3* 0 0 0 27* 0

0 4* 0 0 0 20* 0

0 0 1 0 0 0 60

Table 2-2 Typical MRFU V1 configuration (900 MHz, GU MSR)





1 1 40 40

1 2 40 20

2 1 20 40

2 2 20 20

3 1 20 10

3 1 16 20

3 2 16 10

3 2 10 20

4 1 12 20

4 2 10 10

5 1 10 10


Ltd

7


Table 2-3 Typical MRFU V1 configuration (1800 MHz, GL MSR)





1 1 40 40

2 1 20 40

3 1 20 10

3 1 16 20

4 1 15 10

4 1 12 20

5 1 10 20

Table 2-4, Table 2-5, and Table 2-6 list the typical configurations of the MRFU V2.

Two MRFU V2 modules are required to enable MIMO on the UMTS side.

Table 2-4 Typical MRFU V2 configuration (850 MHz/900 MHz/1800 MHz, single-mode)








1 0 0 60 60 0 0

2 0 0 40 40 0 0

3 0 0 27 31 0 0

4 0 0 20 27 0 0

5 0 0 16 20 0 0

6 0 0 12 20 0 0

0 1 0 0 0 60 0

0 1 0 0 0 2x60 0

0 2 0 0 0 40 0

0 2 0 0 0 2x40 0

0 3* 0 0 0 27* 0

0 3* 0 0 0 2x27* 0

0 4* 0 0 0 20* 0


Ltd

8









0 4* 0 0 0 2x20* 0

0 0 1 0 0 0 1x60

Table 2-5 Typical MRFU V2 configuration (850 MHz/900 MHz, GU MSR)





1 1 40 40

2 1 20 40

2 1 31 20

3 1 20 20

4 1 12 20

5 1 10 20

1 2 40 20

2 2 20 20

3 2 16 10

3 2 10 20

4 2 10 10

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. When there are more than three GSM carriers, LTE bandwidth can be 1.4, 3, 5, or 10 MHz in the 900 MHz frequency band or be 5 or 10 MHz in the 1800 MHz frequency band.

Two MRFU V2 modules are required to enable MIMO on the LTE side.

Table 2-6 Typical MRFU V2 configuration (900 MHz/1800 MHz, GL MSR)





1 1 40 30

1 1 30 40


Ltd

9






2 1 27 20

2 1 20 30

3 1 20 20

4 1 12 20

5 1 10 20

2.5 Power Consumption

The typical power consumption and the maximum power consumption are measured when the base station works at a temperature of 25°C.

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 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 2 x 2 MIMO configuration is applied on the LTE side. The output power of each carrier is 40 W and the bandwidth of each carrier is 10 MHz.

The power consumption for GSM is calculated based on the sharing power.

2.5.1 Power Consumption of the BTS3900

Table 2-1 Power consumption of the BTS3900 (-48V) (configured with MRFU V1, 900 MHz)

Mode Configuration Output Power per Carrier (W)

Typical Power Consumption (W)

Maximum Power Consumption (W)

GSM 3x2 20 700 900

3x4 27 950 1350

3x6 16 840 1180

UMTS 3x1 20 540 670

3x2 20 800 1020

3x3 20 1040 1330

3x4 20 1150 1450


Ltd

10


GSM+UMTS

GSM 3x2 + UMTS 3x1

20/40 1150 1440

GSM 3x4 + UMTS 3x1

15/10 970 1260

GSM 3x4 + UMTS 3x2

10/10 930 1190





GSM 3x2 20 620 730

3x4 20 810 1130

3x6 12 710 1025

UMTS 3x1 20 595 650

3x2 20 630 800

LTE 3x1 2x60 1185 1270





GSM 3x2 20 640 750

3x4 20 820 1140

3x6 12 685 1100

LTE 3x1 2x60 1230 1355


Ltd

11


2.5.2 Power Consumption of the BTS3900A

Table 2-1 Power consumption of the BTS3900A (AC) (configured with MRFU V1, 900 MHz)




GSM 3x2 20 800 1040

3x4 27 1070 1540

3x6 16 950 1340

UMTS 3x1 20 660 840

3x2 20 950 1220

3x3 20 1210 1560

3x4 20 1340 1700

GSM+UMTS

GSM 3x2 + UMTS 3x1

20/40 1340 1690

GSM 3x4 + UMTS 3x1

15/10 1140 1490

GSM 3x4 + UMTS 3x2

10/10 1100 1410





GSM 3x2 20 620 730

3x4 20 810 1130

3x6 12 710 1025

UMTS 3x1 20 595 650

3x2 20 630 800

LTE 3x1 2x60 1185 1270


Ltd

12






GSM 3x2 20 640 750

3x4 20 820 1140

3x6 12 685 1100

LTE 3x1 2x60 1230 1355

2.5.3 Power Consumption of the BTS3900L

Table 2-1 Power consumption of the BTS3900L (configured with MRFU V1, 900 MHz)




GSM 3x2 20 745 960

3x4 27 995 1410

3x6 16 885 1240

UMTS 3x1 20 585 730

3x2 20 845 1080

3x3 20 1085 1390

3x4 20 1195 1510

GSM+UMTS

GSM 3x2 + UMTS 3x1

20/40 1195 1500

GSM 3x4 + UMTS 3x1

15/10 1015 1320

GSM 3x4 + UMTS 3x2

10/10 975 1250


Ltd

13






GSM 3x2 20 645 755

3x4 20 835 1155

3x6 12 735 1050

UMTS 3x1 20 620 675

3x2 20 655 825

LTE 3x1 2x60 1210 1295





GSM 3x2 20 645 755

3x4 20 835 1155

3x6 12 735 1050

LTE 3x1 2x60 1210 1295

2.5.4 Power Consumption of the BTS3900AL

Table 2-1 Power consumption of the BTS3900AL (AC) (configured with MRFU V2, 900 MHz/1800 MHz)




GSM 3x4 (MRFU V2, 900 MHz) + 3x4 (MRFU V2, 1800 MHz)

20/20 1820 2495


Ltd

14


GSM+UMTS

GSM 3x4 (MRFU V2, 900 MHz) + GSM 3x4 (MRFU V2, 1800 MHz) + UMTS 3x2 (WRFU, 2100 MHz)

20/20 2300 3125


Ltd

15

MRFU Description 2 Acronyms and Abbreviations

3 Acronyms and Abbreviations

Abbreviation Full Name

3GPP 3rd Generation Partnership Project

BBU Baseband Unit

BER Bit Error Ratio

CPRI Common Public Radio Interface

DTX Discontinuous Transmission

GSM Global Service Mobile

GTMU GSM Timing and Main Control Unit

LBBP LTE BaseBand Processing Unit

LTE Long Term Evolution

MIMO Multi-input and Multi-output

MRFU Multi-Mode Radio Frequency Unit

MSR Multi-Standard Radio

RAN Radio Access Network

SDR Software Defined Radio

UBRI Universal Baseband Radio Interference Board


Ltd

16

http://3ms.huawei.com/term/docMaintain/termOperate.do?method=listTermAndDefinition&f_id=20081203005260&fd_id=47028&node_id=1-9&searchType=fulltext&searchValue=DTX&caseSensitive=

Documents

MRFU Description V1.5