GRFU Description V1.1

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GRFU Description

Issue V1.1 Date 2011-02-15

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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]

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GRFU Description Contents

1 Introduction...1

2 Technical Specifications...2

2.1 RF Specifications...2 2.2 Power Consumption...4

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1

Introduction

The GSM Radio Frequency Unit (GRFU) is a Radio Frequency (RF) unit based on the multi-carrier technology. GRFUs 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 large capacity. A GRFU supports a maximum of six carriers. a.1 shows its exterior.

Figure a.1 Exterior of the GRFU

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GRFU Description 1 Introduction

2

Technical Specifications

2.1 RF Specifications

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EGSM 900 (V2) 880 to 915 925 to 960 GSM 1800 (V2) 1710 to 1770 1805 to 1865 1725 to 1785 1820 to 1880 GSM 1800M（V2a） 1710 to 1755 1805 to 1850 GSM 1900 (V1) 1850 to 1890 1930 to 1970 1870 to 1910 1950 to 1990

Capacity  A cabinet supports a maximum of 36 carriers. A cell supports a

maximum of 24 carries.

A base station supports a maximum of 72 carriers. The maximum

configuration is S24/24/24.

Receiver sensitivity for the GRFU V2

Frequency Band Independent Receive Two-Way Receive Diversity 900 MHz –113.5 dBm –116.5 dBm 1800 MHz –113.8 dBm –116.8 dBm Receiver sensitivity for the GRFU V1

Frequency Band Independent Receive Two-Way Receive Diversity

1900 M –113 dBm –116 dBm

Output power

900M/1800M (GMSK/8PSK, for the GRFU V2) With power sharing:

3TRX: 31W/20W 4TRX: 27W/17W 5TRX: 20W/13W 6TRX: 20W/13W

Without power sharing:

1900M (GMSK/8PSK, for the GRFU V1) With power sharing:

Without power sharing:

3TRX: 27W/17W 4TRX: 20W/13W 5TRX: 12W/8W 6TRX: 10W/6.6W

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Item RF Specification

For the RF standards, see EN 301 502 V9.2.1

2.2 Power Consumption

2.2.1 Power Consumption of the BTS3900

Figure a.2 Power consumption of the BTS3900 that is configured with GRFUs (V2)

Item Specification Power consumption (DC) S4/4/4, 900 MHz, TOC = 20 W 680W S6/6/6, 900 MHz, TOC = 20 W 710W S4/4/4, 1800 MHz, TOC = 20 W 670W S6/6/6, 1800 MHz, TOC = 20 W 770W Note:

With Multi-Carrier Intelligent Voltage Regulation/ TRX Working Voltage Adjustment/ DTX/ Power Control/ Power Sharing open.

2.2.2 Power Consumption of the BTS3900A

Figure a.3 Power consumption of the BTS3900A that is configured with GRFUs (V2)

Item Specification Power consumpti on (AC) S4/4/4, 900 MHz, TOC = 20 W 760W S6/6/6, 900 MHz, TOC = 20 W 790W S4/4/4, 1800 MHz, TOC = 20 W 750W S6/6/6, 1800 MHz, TOC = 20 W 860W Note:

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consumptio n

(DC)

900M S4/4/4 + 1800M S8/8/8 Note:

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Acronyms and Abbreviations

GATM GSM Antenna and TMA Control Module GRFU GSM Radio Frequency Unit

MTBF Mean Time Between Failures MTTR Mean Time to Recovery PBT Power Boost Technology RF Radio Frequency

RRU Remote RF Unit