KR101557720B1 - Tower mounted booster - Google Patents

Tower mounted booster Download PDF

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Publication number
KR101557720B1
KR101557720B1 KR1020090082579A KR20090082579A KR101557720B1 KR 101557720 B1 KR101557720 B1 KR 101557720B1 KR 1020090082579 A KR1020090082579 A KR 1020090082579A KR 20090082579 A KR20090082579 A KR 20090082579A KR 101557720 B1 KR101557720 B1 KR 101557720B1
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KR
South Korea
Prior art keywords
transmission
signal
reception
antenna
main
Prior art date
Application number
KR1020090082579A
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Korean (ko)
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KR20110024543A (en
Inventor
김경석
Original Assignee
주식회사 케이엠더블유
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 주식회사 케이엠더블유 filed Critical 주식회사 케이엠더블유
Priority to KR1020090082579A priority Critical patent/KR101557720B1/en
Priority to PCT/KR2010/005980 priority patent/WO2011028048A2/en
Publication of KR20110024543A publication Critical patent/KR20110024543A/en
Application granted granted Critical
Publication of KR101557720B1 publication Critical patent/KR101557720B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0825—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with main and with auxiliary or diversity antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H04B7/0608—Antenna selection according to transmission parameters

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

The present invention relates to a tower-mounted booster, which booster is connected between a first antenna and a second antenna and a base station body to process main transmit / receive signals and diversity transmit / receive signals; A coupler that is installed in a main transmission signal path of the main transmission signal path processing the main transmission / reception signal so that a part of the main transmission signal power is branched; A variable attenuator, and a high power amplifier for receiving a signal output from the variable attenuator, amplifying high power and outputting the amplified signal as a diversity transmission signal.

Base station, tower, TMA, booster

Description

Tower mounting booster {TOWER MOUNTED BOOSTER}

The present invention relates to a mobile communication base station system, and more particularly, to a tower mounted transmission / reception booster of a base station system.

Generally, a mobile communication base station system amplifies a signal to be transmitted through a high power amplifier located in a base station, and then transmits a transmission signal to an antenna through a feed cable, and the antenna radiates a transmission signal. In addition, when the antenna receives a signal and transmits a signal through a feed cable to a low noise amplifier (LNA) in a base station, the low noise amplifier amplifies a weak received signal. At this time, the antenna is installed at a high position such as a building roof or a tower for service purpose, and the base station equipment is installed in the building or on the ground under the tower. Therefore, a very long signal transmission line is formed between the base station apparatus and the antenna.

Since the signal transmission line between the base station apparatus and the antenna is long, a lot of signal loss may occur while the transmission signal and the reception signal are transmitted through the feed cable.

One way to solve this problem is to connect a booster called Tower Mounted Amplifier (TMA) to a nearby location of the antenna.

Accordingly, the present invention provides a tower-mounted booster for increasing cell coverage by amplifying transmission power as a more stable structure.

In order to achieve the above object, the present invention provides a tower-mounted booster, wherein the booster is connected between a first antenna and a second antenna and a base station body to process a main transmit / receive signal and a diversity transmit / receive signal; A coupler installed in a main transmission signal path of the main transmission signal path for processing the main transmission / reception signal so that a part of the power of the main transmission signal is branched; and an attenuation amount of a transmission signal branched from the coupler, And a high power amplifier for receiving a signal output from the variable attenuator and amplifying the signal by high power and outputting the amplified signal as a diversity transmission signal.

As described above, the tower-mounted booster according to the present invention can increase the cell coverage by amplifying the transmission power while ensuring the transmission output of the main equipment side more stably.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be appreciated that those skilled in the art will readily observe that certain changes in form and detail may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims. To those of ordinary skill in the art.

1 is a block diagram of a tower-mounted booster and associated equipment according to an embodiment of the present invention. 1, a booster 3 according to an embodiment of the present invention includes a first antenna ANT 1 for transmitting / receiving a main signal and a second antenna ANT 2 for transmitting / And is connected to an FEU (Front End Unit) in the base station body 1 through a first antenna cable 5-1 and a second antenna cable 5-2, Amplifies and transmits the transmission / reception signals between the second antennas ANT1 and ANT2 and the base station main body 1.

The term 'high power amplification' as used below is defined as meaning amplifying power at a certain level or amplifying a certain level of power.

The booster 3 includes a first transmission / reception filter unit 302, a second transmission / reception filter unit 312 and a third low-noise amplifier 314 for processing main transmission / reception signals. And is connected to the first transmission / reception filter unit 302 through a cable 5-1 and the second transmission / reception filter unit 312 is connected to the first antenna ANT1.

The first transmission / reception filter unit 302 and the second transmission / reception filter unit 312 filter the input / output main transmission / reception signals according to transmission and reception frequency bands.

For example, the transmission signal from the base station body 1 is input to the first transmission / reception filter unit 302 through the first antenna cable 5-1 and filtered, and then transmitted through the second transmission / reception filter unit 312 Filtered again, and then emitted through the first antenna.

The second transmission / reception filter unit 312 filters the main reception signal received through the first antenna and transmits the main reception signal to the third low noise amplifier 314 as an input signal.

The third low-noise amplifier 314 low-noise amplifies the input main reception signal and outputs the amplified main reception signal, which is filtered by the first transmission / reception filter unit 302, (1).

The booster 3 includes a third transmission / reception filter unit 322, a fourth low-noise amplifier 324, and a second reception filter unit 326 for diversity transmission / reception signal processing.

The booster 3 includes a coupler 316 coupling a part of the main transmission signal of the first transmission and reception filter unit 302 and a variable attenuator 325 and a second high output amplifier 323.

In this manner, the coupler 316 is located in the main transmission signal path according to an aspect of the present invention, and the coupler 316 can be used as the transmission power of the diversity signal by coupling and branching a part of the main transmission signal power .

The third transmission and reception filter unit 322 filters the input and output diversity transmission and reception signals according to the transmission and reception frequency bands and transfers the filtered signals to the second antenna ANT2 and the booster 3. The fourth low-noise amplifier 324 low-noise amplifies the diversity reception signal filtered through the third transmission / reception filter unit 322 and transmits the amplified low-noise amplified signal to the second reception filter unit 326.

The second reception filter unit 326 filters the input signal according to the reception frequency band. The filtered signal is transmitted to the base station main body 1 via the second antenna cable 5-2.

The transmission signal branched by the coupler 316 is provided to the variable attenuator 325. The variable attenuator 325 adjusts the attenuation amount of the branched transmission signal and outputs the attenuated amount to the second high power amplifier 323, The second high power amplifier 323 receives the high power amplified signal, amplifies the received high power and provides the amplified signal to the second antenna ANT2 through the third transmission / reception filter unit 322, and then wirelessly transmits the amplified signal to the second antenna ANT2.

In this case, the variable attenuator 325 can use a low-power attenuator by branching only a part of the main transmission signal through the coupler 316. [

Also, even if a failure occurs in the second high power amplifier 323, since the main transmission signal from the base station main body 1 is directly transmitted through the first antenna ANT 1, it is necessary to bypass the transmission signal There is no need to use an expensive high power hot switch.

In other words, the booster 3 according to the present invention can faithfully function as a booster by using the second high power amplifier 323, and if a failure occurs in the second high power amplifier 323, And there is an effect that transmission can be performed.

Meanwhile, the first antenna and the second antenna according to the above description may be a plurality of polarization diversity antennas provided in one antenna.

The variable attenuator 325 may have a variable attenuation structure to be manually operated, but it may be operated under the control of a TCU (Tower Control Unit) 301 included in the booster 3 Can be implemented. The operation power of the variable attenuator 325 and the second high-power amplifier 323, the third and fourth low-noise amplifiers 314 and 324 and the TCU 301 is supplied through a separate power supply system However, the second antenna cable 5-2 may be provided according to the features of the present invention.

That is, a first bias-T 220 is installed on the second antenna cable 5-2 on the base station body 1 side and a second antenna cable 5-2 on the booster 3 side, A second bias tee 320 is provided so that a received signal between the booster 3 and the base station main body 1 is transmitted through the first and second bias tees 220 and 320, 220 may be connected to a power supply unit (PSU) 2, which is a power supply unit, to receive DC power. The DC / DC converter 311 is connected between the DC / DC converter 311 and the DC / DC converter 311. The DC / DC converter 311 is connected to the DC / So that the power supply can be stably provided.

At this time, the TCU 301 of the booster 3 monitors various operation states of the second high power amplifier 323, the third and fourth low noise amplifiers 314 and 324, and the variable attenuator 325, For example, an abnormal alarm of the corresponding function unit) through a DC power supply path of the DC / DC converter 311 by a frequency shift keying (FSK) method. The PSU 2 may be provided with a main control unit (MCU) 201 and an AC / DC converter 211 for controlling the power supply operation of the booster 3, The MCU 201 of the mobile station 2 receives the provided information and transmits the received information to an NMS (Network Management System) of the external network. The PSU 2 receives the operation control command of the booster 3 from the NMS of the external network and transmits the control information to the first and second bias tiers 220 and 320 and the DC / DC converter 311 to the TCU 301. At this time, as control information provided to the TCU 301, there may be information for setting the variable attenuation amount of the variable attenuator 325, and accordingly, the TCU 301 adjusts the variable attenuation amount of the variable attenuator 325. In this case, it is also possible to perform full attenuation to block the diversity transmission power. Although the PSU 2 is shown separately from the base station body 1, the base station body 1 may be installed inside the enclosure forming the outer shape of the other base station body 1 As shown in FIG. The TCU 301, the DC / DC converter 311 and the second bias tooth 320 may be included in the booster 3 or may be separately located outside the booster 3 as described above .

As described above, the configuration and operation of the tower-mounted booster according to the embodiment of the present invention can be performed. While the embodiments of the present invention have been described with reference to the exemplary embodiments of the present invention, various modifications may be made without departing from the scope of the present invention. . For example, each of the third and fourth LNAs 314 and 324 and the second high-power amplifier 323 in the booster 3 employs a switching structure or the like to additionally provide a path for bypassing the corresponding element And the TCU 301 may have a structure for controlling the path setting so that the signal is bypassed when the corresponding device fails. In addition to (or in addition to) such a bypass path, additional redundancy elements may be additionally provided to further route the path to the devices. In addition, various modifications and variations of the present invention may be made without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.

1 is a block diagram of a tower-mounted booster and related equipment of a mobile communication base station system according to an embodiment of the present invention;

Claims (2)

In the tower mounting booster, Wherein the booster is connected between a first antenna for a main transmit / receive signal and a second antenna for a diversity transmit / receive signal and a base station body to process the main transmit / receive signal and the diversity transmit / receive signal; A coupler installed in a main transmission signal path of the main transmission signal path for processing the main transmission / reception signal so that a part of the main transmission signal is branched; A variable attenuator for adjusting and outputting an amount of attenuation of a signal branched by the coupler; And a power amplifier for receiving a signal output from the variable attenuator, amplifying the power, and outputting the amplified signal as a diversity transmission signal. The method according to claim 1, A first transmission / reception filter unit for filtering according to transmission and reception frequency bands and outputting the signals in a first antenna cable direction and a first antenna direction connected to the base station body, A second transmission / reception filter unit for filtering according to transmission and reception frequency bands and outputting the signals in a direction of either the first antenna direction or the first transmission / reception filter direction, A first low noise amplifier provided in a main reception signal path between the first and second transmission and reception filter units for low noise amplifying and outputting a main reception signal; A third transmission / reception filter unit for filtering the diversity transmission / reception signals input / output between the second antenna and the booster according to transmission and reception frequency bands and transmitting the filtered signals to the second antenna and the booster, A second low noise amplifier for low noise amplifying and outputting the diversity reception signal output from the third transmission / reception filter unit; Further comprising a reception filter unit for receiving the low-noise amplified diversity reception signal in the second low-noise amplifier and filtering the reception signal according to the reception frequency band to be transmitted to the base station body; Wherein the coupler is installed in a main transmission signal path between the first and second transmission / reception filter units, And the output path of the power amplifier is connected to the transmission path of the third transmission / reception filter unit.
KR1020090082579A 2009-09-02 2009-09-02 Tower mounted booster KR101557720B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020090082579A KR101557720B1 (en) 2009-09-02 2009-09-02 Tower mounted booster
PCT/KR2010/005980 WO2011028048A2 (en) 2009-09-02 2010-09-02 Tower-mounted booster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020090082579A KR101557720B1 (en) 2009-09-02 2009-09-02 Tower mounted booster

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Publication Number Publication Date
KR20110024543A KR20110024543A (en) 2011-03-09
KR101557720B1 true KR101557720B1 (en) 2015-10-07

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WO (1) WO2011028048A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111244607A (en) * 2015-02-11 2020-06-05 康普技术有限责任公司 Module, system and method for power delivery to remote radio heads

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US10712515B2 (en) 2013-09-17 2020-07-14 Commscope Technologies Llc Capacitive-loaded jumper cables, shunt capacitance units and related methods for enhanced power delivery to remote radio heads
US9759880B2 (en) 2013-09-17 2017-09-12 Commscope Technologies Llc Capacitive-loaded jumper cables, shunt capacitance units and related methods for enhanced power delivery to remote radio heads
US9281866B2 (en) 2013-09-17 2016-03-08 Commscope Technologies Llc Methods for enhanced power delivery to tower-mounted and other remotely-mounted remote radio heads and related systems and power cables
US10281939B2 (en) 2014-02-17 2019-05-07 Commscope Technologies Llc Methods and equipment for reducing power loss in cellular systems
US9448576B2 (en) 2014-02-17 2016-09-20 Commscope Technologies Llc Programmable power supplies for cellular base stations and related methods of reducing power loss in cellular systems
US10830803B2 (en) 2014-02-17 2020-11-10 Commscope Technologies Llc Methods and equipment for reducing power loss in cellular systems
US11333695B2 (en) 2014-02-17 2022-05-17 Commscope Technologies Llc Methods and equipment for reducing power loss in cellular systems
EP3931939A4 (en) 2019-05-01 2023-04-05 CommScope Technologies LLC Methods and equipment for reducing power loss in cellular systems

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EP1012994A1 (en) * 1997-03-03 2000-06-28 Celletra Ltd. Cellular communications systems
US6583763B2 (en) * 1999-04-26 2003-06-24 Andrew Corporation Antenna structure and installation
KR100549887B1 (en) * 2002-12-23 2006-02-06 엘지전자 주식회사 Measurement appatatus and method for VSWR and power of antenna in mobile communication base station
KR100884250B1 (en) * 2007-01-25 2009-02-17 주식회사 에이스테크놀로지 Tower Mounted Amplifier with Simplified Structure and Mobile Base Station Including the Same

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Publication number Priority date Publication date Assignee Title
KR200325815Y1 (en) * 2003-06-25 2003-09-06 (주)링크텍 Tower Top Booster for Base Station Transceiver System

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111244607A (en) * 2015-02-11 2020-06-05 康普技术有限责任公司 Module, system and method for power delivery to remote radio heads

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WO2011028048A2 (en) 2011-03-10
KR20110024543A (en) 2011-03-09
WO2011028048A3 (en) 2011-07-14

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