DRFU Description
Issue
V1.1
Date
2011-02-15
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.
Notice The 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 Base Bantian, Longgang Shenzhen 518129 People's Republic of China
Website:
http://www.huawei.com
Email:
[email protected]
Issue V1.1 (2011-02-15)
Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd
i
DRFU Description
Contents
Contents 1 Introduction...................................................................................1 1.1 DRFU.......................................................................................................................................................................1 1.2 GATM......................................................................................................................................................................1
2 Technical Specifications..................................................................3 2.1 RF Specifications.....................................................................................................................................................3 2.2 Power Consumption................................................................................................................................................4 Power Consumption of the BTS3900.........................................................................................................................4 Power Consumption of the BTS3900A......................................................................................................................4 Power Consumption of the BTS3900L......................................................................................................................4
3 Acronyms and Abbreviations...........................................................6
Issue V1.1 (2011-02-15)
Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd
ii
DRFU Description
3 Acronyms and Abbreviations
1
Introduction
1.1 DRFU The Double Radio Frequency Unit (DRFU) is a Radio Frequency (RF) unit based on the dual density technology. DRFUs are installed in the indoor macro base station (including the BTS3900 and the BTS3900L) and the outdoor macro base station (namely, the BTS3900A). They are usually used in scenarios requiring medium or small capacity. A DRFU supports a maximum of two carriers. a.1 shows its exterior. Figure a.1 Exterior of the DRFU
1.2 GATM The GSM Antenna and TMA Control module (GATM) is optional. If DRFUs are configured in the RF cabinet and the Remote Electrical Tilt (RET) antenna or Tower-Mounted Amplifier (TMA) is required, the GATM must be configured. The GATM is configured in the BTS3900 or the BTS3900A. a.1 shows the front panel of the GATM. Issue V1.1 (2011-02-15)
Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd
1
DRFU Description
3 Acronyms and Abbreviations
Figure a.1 Front panel of the GATM
Issue V1.1 (2011-02-15)
Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd
2
DRFU Description
3 Acronyms and Abbreviations
2
Technical Specifications
2.1 RF Specifications Figure a.1 RF specifications of the DRFU Item
RF Specification
Supported frequency band
Frequency Band
RX Band (MHz)
TX Band (MHz)
EGSM 900
880 to 915
925 to 960
PGSM 900
890 to 915
935 to 960
GSM 1800
1710 to 1785
1805 to 1880
Capacity
Receiver sensitivity
Output power
Issue V1.1 (2011-02-15)
A cabinet supports a maximum of 12 carriers. A cell supports a maximum of 24 carries.
A base station supports a maximum of 36 carriers, and the maximum configuration is S12/12/12.
Independent Receive
Two-Way Receive Diversity
Four-Way Receive Diversity
–113 dBm
–116 dBm
–118.5 dBm
900M (GMSK/8PSK)
1800M (GMSK/8PSK)
Non-combined transmission: 45 W/30 W
Non-combined transmission: 40 W/26 W
Combined transmission: 20 W/14 W
Combined transmission: 18 W/12 W
PBT: 71 W/47 W
PBT: 63 W/42 W
Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd
3
DRFU Description
3 Acronyms and Abbreviations
2.2 Power Consumption Power Consumption of the BTS3900 Figure a.2 Power consumption of the BTS3900 that is configured with DRFUs Item
Specification
Power consumption (DC)
Configuration
Typical Power Consumption (W)
S2/2/2, 900 MHz, TOC = 45 W
750
S4/4/4, 900 MHz, TOC = 20 W
1,140
S2/2/2, 1800 MHz, TOC = 40 W
750
S4/4/4, 1800 MHz, TOC = 18 W
1,150
NOTE
TOC refers to the output power at the top of the cabinet.
The typical power consumption of a specific base station refers to the maximum power consumption of the base station when it carries 30% of the total load.
Power Consumption of the BTS3900A Figure a.3 Power consumption of the BTS3900A that is configured with DRFUs Item
Specification
Power consumption (AC)
Configuration
Typical Power Consumption (W)
S2/2/2, 900 MHz, TOC = 45 W
860
S4/4/4, 900 MHz, TOC = 20 W
1,290
S2/2/2, 1800 MHz, TOC = 40 W
860
S4/4/4, 1800 MHz, TOC = 18 W
1,300
Power Consumption of the BTS3900L Figure a.4 Power consumption of the BTS3900L that is configured with DRFUs Item
Specification
Power consumption
Configuration
Issue V1.1 (2011-02-15)
Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd
Typical Power Consumption (W)
4
DRFU Description
3 Acronyms and Abbreviations
Item
Specification
(DC)
S6/6/6, 900 MHz, TOC = 20 W
1,370
S8/8/8, 900 MHz, TOC = 20 W
1,970
S2/2/2, 1800 MHz, TOC = 18 W
1,390
S4/4/4, 1800 MHz, TOC = 18 W
1,990
Issue V1.1 (2011-02-15)
Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd
5
DRFU Description
3 Acronyms and Abbreviations
3
Acronyms and Abbreviations
DRFU
Dual-Density RF Unit
GATM
GSM Antenna and TMA Control Module
MTBF
Mean Time Between Failures
RET
Remote Electrical Tilt
MTTR
Mean Time to Recovery
RF
Radio Frequency
PBT
Power Boost Technology
RRU
Remote RF Unit
TMA
Tower-Mounted Amplifier
TOC
Transmit Power at the Top of Cabinet
Issue V1.1 (2011-02-15)
Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd
6
