KR20110024543A - Tower mounted booster - Google Patents

Tower mounted booster Download PDF

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Publication number
KR20110024543A
KR20110024543A KR1020090082579A KR20090082579A KR20110024543A KR 20110024543 A KR20110024543 A KR 20110024543A KR 1020090082579 A KR1020090082579 A KR 1020090082579A KR 20090082579 A KR20090082579 A KR 20090082579A KR 20110024543 A KR20110024543 A KR 20110024543A
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KR
South Korea
Prior art keywords
signal
transmission
antenna
reception
booster
Prior art date
Application number
KR1020090082579A
Other languages
Korean (ko)
Other versions
KR101557720B1 (en
Inventor
김경석
Original Assignee
주식회사 케이엠더블유
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15507—Relay station based processing for cell extension or control of coverage area
    • H04B7/15514—Relay station based processing for cell extension or control of coverage area for shadowing compensation

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

Abstract

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 main body to process main transmit and receive signals and diversity transmit and receive signals; A coupler installed in the main transmission signal path of the main transmission signal path that processes the main transmission / reception signal, and a part of the main transmission signal power branched out; It comprises a variable attenuator and a high power amplifier that receives the signal output from the variable attenuator and amplifies the high power and outputs the diversity amplified signal.

Description

Tower Mount Booster {TOWER MOUNTED BOOSTER}

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

In general, 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 the signal and transmits the signal to a low noise amplifier (LNA) in the base station through the feed cable, the low noise amplifier amplifies the weak received signal. At this time, the antenna is installed at a high position such as a roof or a tower for a service purpose, and the base station main body equipment is installed in the building or on the ground below the tower. Therefore, a fairly long signal transmission line is formed between the base station body equipment and the antenna.

As such, since the signal transmission line between the base station main body equipment and the antenna is long, many signal loss may occur while the transmission signal and the reception signal are transmitted through the feed cable.

The main method used to solve this problem is to connect a booster, also called a tower mounted amplifier (TMA), to the proximity of the antenna.

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

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 main body to process a main transmit / receive signal and a diversity transmit / receive signal; A coupler installed in the main transmission signal path of the main transmission signal path for processing the main transmission / reception signal to branch a portion of the main transmission signal power, and attenuating the branched transmission signal by receiving a signal branched from the coupler; And a high power amplifier for receiving the signal output from the variable attenuator, amplifying the high power, and outputting the 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 output while ensuring the transmission output of the ratio ratio side more stably.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, specific details such as specific components are shown, which are provided to help a more general understanding of the present invention, and it is understood that these specific details may be changed or changed within the scope of the present invention. It is self-evident to those of ordinary knowledge in Esau.

1 is a block diagram of a tower mounted booster and related equipment according to an embodiment of the present invention. Referring to FIG. 1, a booster 3 according to an embodiment of the present invention may be connected to a lower portion of a first antenna ANT 1 for transmitting / receiving a main signal and a second antenna ANT 2 for diversity. It is mounted on the tower so as to be connected directly or indirectly, and is connected to the front end unit (FEU) in the base station main body 1 through the first antenna cable 5-1 and the second antenna cable 5-2. Transmission and reception signals between the second antenna ANT1 and the base station main body 1 are amplified and transmitted.

The term 'high power amplification' used hereinafter is defined as amplifying power above a certain level or amplifying a certain level of power.

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

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

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

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

The third low noise amplifier 314 low noise amplifies and outputs the input main received signal, which is again filtered by the first transmit / receive filter unit 302 and then the base station main body through the first antenna cable 5-1. Is passed to (1).

The booster 3 includes a third transmit / receive filter unit 322, a fourth low noise amplifier 324, and a second receive filter unit 326 to process diversity transmit / receive signals.

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

As described above, the coupler 316 is positioned in the main transmission signal path according to the characteristics 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. Make sure

The third transmission / reception filter unit 322 filters the diversity transmission / reception signals inputted and outputted according to the transmission and reception frequency bands and transmits the diversity transmission / reception signals to the second antenna ANT2 and the booster 3. The fourth low noise amplifier 324 amplifies the diversity reception signal filtered through the third transmit / receive filter unit 322 to low noise and transfers the received signal to the second receive filter unit 326.

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

On the other hand, the transmission signal branched from the coupler 316 is provided to the variable attenuator 325, the variable attenuator 325 adjusts the amount of attenuation of the branched transmission signal and outputs it to the second high power amplifier 323, The second high power amplifier 323 receives the high power and amplifies it, is provided to the second antenna ANT2 via the third transmit / receive filter unit 322, and then wirelessly transmitted from the second antenna ANT2.

In the above, by branching only a part of the main transmission signal through the coupler 316, in the case of the variable attenuator 325, the low power attenuator can be used.

In addition, even if a failure occurs in the second high power amplifier 323, the main transmission signal from the base station main body 1 is transmitted through the first antenna ANT 1 as it is necessary for bypass of the transmission signal. There is no need for expensive high power hot switch.

In other words, the booster 3 according to the present invention can faithfully function as a booster using the second high power amplifier 323, and even if a failure occurs in the second high power amplifier 323, the main transmission signal is This has the effect of passing and transmitting.

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

On the other hand, the external control of the variable attenuation rang of the variable attenuator 325 may have a structure that is input by a manual operation, it is operated under the control of the TCU (Tower Control Unit) 301 included in the booster (3) Can be implemented. In addition, in the above configuration, the operating power of the variable attenuator 325, the second high power amplifier 323, the third and fourth low noise amplifiers 314 and 324, and the TCU 301 may be provided through a separate power supply system. Although it may be implemented to be provided, it can be implemented to provide a second antenna cable (5-2) in accordance with the features of the invention.

That is, a first bias-T 220 is provided in the second antenna cable 5-2 on the base station main body 1 side, and the second antenna cable 5-2 on the booster 3 side. The second bias tea 320 is installed, and the received signal between the booster 3 and the base station main body 1 is transmitted through the first, second bias tea 220 (320, 320), the first bias tea ( The DC port of 220 may be connected to a power supply unit (PSU) 2, which is a power supply, to receive DC power. In addition, in the second biaser 320, the DC port is connected to the DC / DC converter 311 which is a power supply of the booster, and the DC / DC converter 311 is required for each functional unit inside the booster 3. It has a structure that provides a stable power supply.

At this time, the TCU 301 of the booster 3 monitors various operating states such as the second high power amplifier 323, the third and fourth low noise amplifiers 314 and 324, and the variable attenuator 325 and the information ( For example, information such as an abnormality alarm of the corresponding function unit) may be provided in a frequency shift keying (FSK) method through a DC power supply path of the DC / DC converter 311. The PSU 2 may be provided with a main control unit (201), an AC / DC converter 211, and the like to process the information provided as described above, and control the operation of supplying power to the booster 3. The MCU 201 of (2) is implemented to perform the function of receiving the information provided as described above and delivering it to the NMS (Network Management System) of the external network. In addition, the PSU 2 receives an operation control command of the booster 3 from an NMS of an external network or the like, and transmits the control information to the first and second biases 220 and 320 and the DC / DC converter (FSK). 311) to the TCU 301. In this case, the control information provided to the TCU 301 may include information for setting a variable attenuation amount of the variable attenuator 325. Accordingly, the TCU 301 adjusts the variable attenuation amount of the variable attenuator 325. In this case, it is also possible to cut the diversity transmit power by performing full attenuation. Meanwhile, although the PSU 2 is illustrated as a device provided separately from the base station main body 1, mechanically, other equipment of the other base station main body 1 is formed inside the enclosure forming the base station main body 1. Can be installed together. Meanwhile, the TCU 301, the DC / DC converter 311, and the second bias tea 320 may be included in the booster 3 as described above, or may be separately located outside the booster 3. .

As described above, the configuration and operation of the tower mounting booster according to an embodiment of the present invention can be made. Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications can be made without departing from the scope of the present invention. Can be. For example, each of the third, fourth LNAs 314 and 324 and the second high power amplifier 323 in the booster 3 employs a switching structure to further bypass the device. The TCU 301 may have a structure for controlling routing so that a signal is bypassed when a corresponding device fails. In addition to (or in addition to) the bypass path, an additional redundancy element may be additionally installed to further change the path to the corresponding elements. In addition, there may be various modifications and changes of the present invention, and therefore, the scope of the present invention should be determined by the equivalents of the claims and the claims rather than by the embodiments described.

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 mounted booster, The booster is connected between the first antenna and the second antenna and the base station main 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 to branch a main transmission signal; A variable attenuator for adjusting and outputting an attenuation amount of the signal branched from the coupler; And a power amplifier receiving the signal output from the variable attenuator and amplifying the power and outputting the power amplifier as a diversity transmission signal. The method of claim 1, A first transmission / reception filter unit for filtering a signal according to a transmission and reception frequency band and outputting the signal in one of a direction of a first antenna cable and a direction of the first antenna; A second transmission / reception filter unit for filtering the signal according to a transmission and reception frequency band and outputting the signal in one of the direction of the first antenna and the transmission / reception filter unit; A first low noise amplifier installed in a main receive signal path between the first and second transmit / receive filter units to low noise amplify and output the main receive signal; A third transmit / receive filter unit which filters diversity transmit / receive signals inputted and outputted between the second antenna and the booster according to a transmission and a reception frequency band, and transmits them 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 transmit / receive filter unit; Receiving a low noise amplified diversity reception signal from the second low noise amplifier, filtering the received signal according to a corresponding reception frequency band, and further receiving the reception filter unit so as to be transmitted to the base station main body; The coupler is installed in the main transmission signal path between the first and second transmission and reception filter units, The power amplifier is a booster, characterized in that the output path is connected to the transmission path of the third transmission and reception filter.
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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KR20110024543A true KR20110024543A (en) 2011-03-09
KR101557720B1 KR101557720B1 (en) 2015-10-07

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Cited By (9)

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WO2015042023A1 (en) * 2013-09-17 2015-03-26 Commscope Technologies Llc Methods for enhanced power delivery to tower-mounted and other remotely-mounted remote radio heads and related systems and power cables
WO2016130322A1 (en) * 2015-02-11 2016-08-18 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
US20180164355A1 (en) 2014-02-17 2018-06-14 Commscope Technologies Llc Methods and equipment for reducing power loss in cellular systems
US10025335B2 (en) 2014-02-17 2018-07-17 Commscope Technologies Llc Programmable power supplies for cellular base stations and related methods of reducing power loss in cellular systems
US10281939B2 (en) 2014-02-17 2019-05-07 Commscope Technologies Llc Methods and equipment for reducing power loss in cellular systems
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
US11333695B2 (en) 2014-02-17 2022-05-17 Commscope Technologies Llc Methods and equipment for reducing power loss in cellular systems
US11818518B2 (en) 2019-05-01 2023-11-14 Commscope Technologies Llc Methods and equipment for reducing power loss in cellular systems

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US6697641B1 (en) * 1997-03-03 2004-02-24 Celletra Ltd. Method and system for improving communication
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
KR200325815Y1 (en) * 2003-06-25 2003-09-06 (주)링크텍 Tower Top Booster for Base Station Transceiver System
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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US10317634B2 (en) 2013-09-17 2019-06-11 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
WO2015042023A1 (en) * 2013-09-17 2015-03-26 Commscope Technologies Llc Methods for enhanced power delivery to tower-mounted and other remotely-mounted remote radio heads and related systems and power cables
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
US9964722B2 (en) 2013-09-17 2018-05-08 Commscope Technologies Llc Capacitive-loaded jumper cables, shunt capacitance units and related methods for enhanced power delivery to remote radio heads
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
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US10025335B2 (en) 2014-02-17 2018-07-17 Commscope Technologies Llc Programmable power supplies for cellular base stations and related methods of reducing power loss in cellular systems
US10394265B2 (en) 2014-02-17 2019-08-27 Commscope Technologies Llc Programmable power supplies for cellular base stations and related methods of reducing power loss in cellular systems
US10423180B2 (en) 2014-02-17 2019-09-24 Commscope Technologies Llc Programmable power supplies for cellular base stations and related methods of reducing power loss in cellular systems
US20180164355A1 (en) 2014-02-17 2018-06-14 Commscope Technologies Llc Methods and equipment for reducing power loss in cellular systems
US11740645B2 (en) 2014-02-17 2023-08-29 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
US11256277B2 (en) 2014-02-17 2022-02-22 Commscope Technologies Llc Programmable power supplies for cellular base stations and related methods of reducing power loss in cellular systems
US10281939B2 (en) 2014-02-17 2019-05-07 Commscope Technologies Llc Methods and equipment for reducing power loss in cellular systems
US11294409B2 (en) 2014-02-17 2022-04-05 Commscope Technologies Llc Methods and equipment for reducing power loss in cellular systems
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US11818518B2 (en) 2019-05-01 2023-11-14 Commscope Technologies Llc Methods and equipment for reducing power loss in cellular systems

Also Published As

Publication number Publication date
KR101557720B1 (en) 2015-10-07
WO2011028048A3 (en) 2011-07-14
WO2011028048A2 (en) 2011-03-10

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