KR20130092296A - Apparatus of combining cables on communication systems - Google Patents

Apparatus of combining cables on communication systems Download PDF

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Publication number
KR20130092296A
KR20130092296A KR1020120013944A KR20120013944A KR20130092296A KR 20130092296 A KR20130092296 A KR 20130092296A KR 1020120013944 A KR1020120013944 A KR 1020120013944A KR 20120013944 A KR20120013944 A KR 20120013944A KR 20130092296 A KR20130092296 A KR 20130092296A
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KR
South Korea
Prior art keywords
signal
vector
output unit
converted
unit
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Application number
KR1020120013944A
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Korean (ko)
Inventor
윤병완
한규정
지영하
Original Assignee
주식회사 케이티
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Priority to KR1020120013944A priority Critical patent/KR20130092296A/en
Publication of KR20130092296A publication Critical patent/KR20130092296A/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
    • H04B7/0413—MIMO systems
    • 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
    • H04B7/15521—Ground-based stations combining by calculations packets received from different stations before transmitting the combined packets as part of network coding

Abstract

PURPOSE: A feeder sharing device in a mobile communications system is provided to share a single feeder even when providing a communications service through a multi-input/multi-output (MIMO) method. CONSTITUTION: A reconversion part (200) is connected with a conversion part through a single feeder. The reconversion part extracts multiple signals from a single signal generated from the conversion part. The reconversion part delivers the multiple extracted signals to a mobile communications system. The reconversion part generates a single signal from multiple signals to be transmitted through multiple antennas. The reconversion part delivers the single generated signal to the conversion part. [Reference numerals] (100) Conversion part; (200) Reconversion part; (AA) Mobile communications system

Description

Apparatus of combining cables on communication systems

The present invention relates to a feeder line sharing device in a mobile communication system.

In general, a feed line is installed between the base station equipment and the antenna in order to transmit an output signal from the base station equipment to the antenna or to transmit a signal received by the antenna to the base station equipment. In addition, two feed lines are required to transmit and receive signals using a MIMO (Multi Input Multi Output) method.

In other words, FIG. 1 is a conceptual diagram for signal transmission in a general communication system. In order to transmit and receive a signal in MIMO in a general system as shown in FIG. 1, a plurality of antennas are spaced apart by a predetermined interval (λ / 2) or more. Should be installed. In this case, a plurality of feed lines are needed between the base station equipment and the antenna.

As such, when a plurality of feeder lines are installed, a burden on the feeder line installation cost is great when a new base station is installed, and there is a problem in that the installation space is insufficient because the antennas should always be spaced apart by λ / 2 or more.

Accordingly, the present invention provides a feed sharing device that enables one feeder line to be shared even when a communication service is provided through a MIMO scheme.

A base station including a mobile communication system for transmitting and receiving signals using a plurality of input and output units which is one feature of the present invention for achieving the technical problem of the present invention, and a plurality of antennas connected to the plurality of input and output units via a feed line The feeder line sharing apparatus for using one feeder line to the mobile communication system and the antenna,

A converter configured to vector convert the plurality of signals inputted from the plurality of antennas into one signal or to generate a plurality of signals to be transmitted through the plurality of antennas; And a feed line connected to the converter, and extracts a plurality of signals from one signal generated by the converter and transfers the signals to the mobile communication system, or transmits a plurality of signals to be transmitted through the plurality of antennas. And a reconversion unit generated as a signal and transmitted to the conversion unit.

The converting unit may include: a first vector converting unit configured to vector convert a first signal received from one of the plurality of antennas to generate a converted first signal; A second vector converter configured to vector-convert a second signal received from one of the plurality of antennas to generate a converted second signal; And an adder configured to generate one third signal by using the converted first signal and the converted second signal.

The converter may include a first signal input / output unit configured to receive the first signal from one of the plurality of antennas or to output a signal transmitted from the reconversion unit; A first circulator configured to transfer the first signal received by the first signal input / output unit to the first vector converter; A second signal input / output unit configured to receive the second signal from one of the plurality of antennas or to output a signal transmitted from the reconversion unit; A second circulator configured to transfer the second signal received by the second signal input / output unit to the second vector converter; A third signal input / output unit configured to transfer a third signal generated by the adder to the reconversion unit or to receive one signal provided from the reconversion unit; A divider for generating the single signal into two signals and outputting the first signal through the first signal input / output unit and the second signal input / output unit; And a third circulator for transmitting one signal received by the third signal input / output unit to the distributor.

The reconversion unit may include: a fourth signal input / output unit configured to receive the third signal from the third signal input / output unit or to provide the one signal to the third signal input / output unit; A vector discriminator configured to extract the converted first signal and the converted second signal from the third signal; A fifth signal input / output unit which outputs the converted first signal extracted by the vector discriminator and receives a fourth signal to be provided to the converter; And a sixth signal input / output unit configured to output the converted second signal extracted by the vector discriminator and to receive a fifth signal to be provided to the converter.

The reconverter may include a fourth circulator configured to transfer the third signal received by the fourth signal input / output unit to the vector discriminator; A third vector converting unit converting a fourth signal input from the mobile communication system to generate a converted fourth signal; A fifth circulator configured to transfer the fourth signal to the third vector converter; A fourth vector converting unit converting a fifth signal input from the mobile communication system to generate a converted fifth signal; A sixth circulator configured to transfer the fifth signal to the fifth vector converter; And an adder configured to generate the single signal using the converted fourth signal and the converted fifth signal.

According to the present invention, when providing an in-building wireless service, even if a signal is transmitted / received in a MIMO manner, one feeder can be shared, thereby reducing the installation cost while maintaining the communication service quality, thereby enabling the operator to reduce the investment cost.

1 is a conceptual diagram for signal transmission in a general communication system.
2 is an exemplary diagram for signal transmission in a communication system according to an embodiment of the present invention.
3 is a structural diagram of a feeder line sharing device according to an embodiment of the present invention.
4 is a flowchart for signal reception according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

In this specification, a terminal includes a mobile station (MS), a mobile terminal (MT), a subscriber station (SS), a portable subscriber station (PSS) An access terminal (AT), and the like, and may include all or some of functions of a mobile terminal, a subscriber station, a mobile subscriber station, a user equipment, and the like.

In this specification, a base station (BS) is an access point (AP), a radio access station (RAS), a node B, a base transceiver station (BTS) Mobile Multihop Relay) -BS, and may include all or some of the functions of an access point, a radio access station, a Node B, a base transceiver station, and an MMR-BS.

Hereinafter, a feeder line sharing apparatus according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

2 is an exemplary diagram for signal transmission in a communication system according to an embodiment of the present invention.

As shown in FIG. 2, a feeder line sharing device 10 is installed between a mobile communication system and a base station provided with a plurality of antennas in order to share one feeder line. Here, the feeder line sharing device 10 is divided into a conversion unit 100 and a reconversion unit 200, and a feeder line is installed between the conversion unit 100 and the reconversion unit 200 to share a feeder line through a plurality of antennas. Make it available. In addition, even though the plurality of antennas are not spaced apart by a predetermined distance, the feeder line sharing device 10 may distinguish and process different signals.

Here, the feeder line sharing device 10 will be described with reference to FIG. 3.

3 is a structural diagram of a feeder line sharing device according to an embodiment of the present invention.

As shown in FIG. 3, the feeder line sharing device 10 is divided into a converter 100 and a reconversion unit 200. The converter 100 connected to the antenna side includes a first signal input / output unit 101, a second signal input / output unit 102, a plurality of circulators 103, 104, 105, and a first vector converter 106. And a second vector converter 107, an adder 108, a distributor 109, and a third signal input / output unit 110, the reconverter 200 connected to the mobile communication system side includes a fourth A signal input / output unit 201, a plurality of circulators 202, 204, and 206, a vector discriminator 203, a third vector converter 205, a fourth vector converter 207, and a fifth signal input / output unit ( 208, a sixth signal input / output unit 209, and an adder 210. One feeder is provided between the converter 100 and the reconverter 200.

First, when the structure of the converter 100 is described, the first signal input / output unit 101 and the second signal input / output unit 102 respectively receive signals received from a plurality of antennas, or a plurality of circulators (described later) Signals are received from 103 and 104 and output to the outside through an antenna, respectively. To this end, the signal input and output unit is described as an example that is configured in the converter 100 as many as the number of antennas, but is not necessarily limited to this.

 In the embodiment of the present invention, since two antennas are described as an example, the signal input / output unit connected to the antenna will be described using an example in which the first signal input / output unit 101 and the second signal input / output unit 102 are configured. A plurality of signal input / output units, including the first signal input / output unit 101 and the second signal input / output unit 102, which will be described later, will be described by way of example.

The first circulator 103 and the second circulator 104 respectively receive signals received from the first signal input / output unit 101 and the second signal input / output unit 102, respectively, from the first vector converter 106 or the first circulator. 2 is transferred to the vector converter 107. That is, the first circulator 103 transmits the signal received by the first signal input / output unit 101 to the first vector converter 106, and the second circulator 104 transmits the second signal input / output unit 102. ) Transmits the received signal to the second vector converter 107. Also, when the third signal input / output unit 110 to be described later receives a signal transmitted from the mobile communication system through the reconversion unit 200, the third circulator 105 transmits the received signal to the distribution unit 109. To pass.

The first vector converter 106 converts a vector component of a signal (hereinafter, referred to as a first signal) received from the first signal input / output unit 101 to output the converted signal. The second vector converter 107 converts a vector component of a signal (hereinafter referred to as a second signal) received from the second signal input / output unit 102 and outputs the converted signal. That is, the frequency at which the original signal is transmitted converts the vector of the signal in a fixed state.

At this time, since the signal converted by the first vector converter 106 and the signal converted by the second vector converter 107 are 90 ° out of phase, the plurality of antennas are not spaced apart by a predetermined distance. Even if they are installed, different signals can be processed separately. In the exemplary embodiment of the present invention, the first vector converter 106 and the second vector converter 107 are described using a phase shifter as an example, and the first vector converter 106 and the second vector converter ( The process of converting the vector component in 107) is already known and a detailed description thereof will be omitted.

The adder 108 adds the first signal converted by the first vector converter 106 and the second signal converted by the second vector converter 107 into one signal (hereinafter referred to as a third signal). Create

The third signal input / output unit 110 outputs the third signal generated by the adder 108 to one feed line to be provided to the reconversion unit 200. Also, the signal received from the reconversion unit 200 is received and transmitted to the third circulator 105.

The distribution unit 109 distributes the signal received through the third circulator 105 and transmits the signal to the first circulator 103 and the second circulator 104, respectively. At this time, the distribution unit 109 distributes one signal to two to be transmitted through a plurality of antennas (MIMO: Multi Input Multi Output) method, respectively, a method of distributing one signal to two already Known matters, detailed descriptions thereof will be omitted in the embodiments of the present invention.

Next, in order to transfer the third signal output from the converter 100 to the mobile communication system, the third signal may be divided into a first signal and a second signal, or a signal output from the mobile communication system may be generated as one signal. The reconversion unit 200 will be described.

The fourth signal input / output unit 201 of the reconversion unit 200 receives the third signal output from the conversion unit 100 or outputs a signal provided from the adder 210 to the conversion unit 100.

The fourth circulator 202 transfers the third signal to the vector discriminator 203 or the signal transmitted from the adder 210 to the converter 100 through the fourth signal input / output unit 201. .

The vector determination unit 203 determines the third signal received through the fourth circulator 202 and divides the third signal into a first signal and a second signal. In this case, the method of determining the signal by the vector determination unit 203 and separating the signal into two different vector components, that is, the first signal of the X vector component and the second signal of the Y vector component is known. In the following description, detailed description will be omitted.

The fifth circulator 204 transfers the signal separated by the first signal from the vector determination unit 203 to the mobile communication system through the fifth signal input / output unit 208, and the sixth circulator 206 determines the vector. The signal separated by the second signal from the unit 203 is transferred to the mobile communication system through the sixth signal input / output unit 209. In addition, the fifth circulator 204 transmits a signal input through the fifth signal input / output unit 208 to the third vector converter 205, and the sixth circulator 206 is a sixth signal input / output unit ( The signal input through the 209 is transferred to the fourth vector converter 207.

The third vector converter 205 receives the signal output from the mobile communication system through the fifth circulator 204, converts the vector, and outputs the converted vector. The fourth vector converter 207 is output from the mobile communication system. The signal is received through the sixth circulator 206 to convert and output the vector. Here, the method of converting the vector component of the signal by the third vector converter 205 and the sixth vector converter 207 is already known, and detailed description thereof will be omitted in the exemplary embodiment of the present invention.

The adder 210 receives each signal converted from the third vector converter 205 and the fourth vector converter 207, generates one signal (hereinafter referred to as a fourth signal), and generates the generated first signal. The fourth signal is transmitted to the fourth circulator 202 to be transmitted to the converter 100.

A method of transmitting signals received by a plurality of antennas to a mobile communication system through the feedline sharing apparatus 10 described above to a mobile communication system, or transmitting signals to the outside through a plurality of antennas using a MIMO method in a mobile communication system This will be described with reference to FIG. 4. In the embodiment of the present invention, a method of receiving signals transmitted to a plurality of antennas through a 2 × 2 MIMO scheme will be described.

4 is a flowchart for signal reception according to an embodiment of the present invention.

As shown in FIG. 4, the first signal input / output unit 101 receives a first signal input through a first antenna, and the second signal input / output unit 102 receives a second signal input through a second antenna. Receive (S100). It is assumed here that the first signal is a signal having an X vector, and the second signal is assumed to be a signal having a Y vector.

Then, the first vector converter 103 converts the first signal, and the second vector converter 104 converts the second signal (S110). The phase difference between the two converted signals is 90 ° so that even if the antennas are adjacent, the two signals are not mixed through the vector conversion, so that the transmitted signals can be confirmed.

When the first vector converter 103 and the second vector converter 104 convert the first signal and the second signal through S110, the adder 108 converts the converted first signal and the second signal. The sum is generated as a third signal (S120). This is to transmit two signals through one feed line, and the third signal input / output unit 110 transmits the third signal generated in step S120 to the reconversion unit 200 (S130).

The vector determination unit 203 of the reconversion unit 200 extracts the first signal and the second signal from the third signal (S140), and the fifth signal input / output unit 208 transmits the first signal among the extracted signals to mobile communication. The sixth signal input / output unit 209 transmits the second signal among the extracted signals to the mobile communication system (S150). Here, since the vector discriminator 203 extracts the first signal and the second signal from the third signal, a detailed description thereof will be omitted in the exemplary embodiment of the present invention.

In the above description, a method of transmitting a signal received through an antenna to a mobile communication system has been described, and a signal transmitted to the outside through an antenna from a mobile communication system is also transmitted similarly to the method described above.

That is, the third vector converting unit 205 and the fourth vector converting unit 207 convert two signals received through the fifth signal input / output unit 208 and the sixth signal input / output unit 209, respectively. The adder 210 generates one signal and transmits the signal to the converter 100. Then, the distribution unit 109 of the conversion unit 100 generates one signal as two signals, and transmits each signal to the plurality of antennas through the first signal input / output unit 101 and the second signal input / output unit 102. And, the antenna transmits the signal in MIMO method.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (6)

In a base station including a mobile communication system for transmitting and receiving a signal using a plurality of input and output units, and a plurality of antennas connected to the plurality of input and output units through a feeder, a single feed line may be used to the mobile communication system and the antenna. In a feeder line sharing device that allows
A converter configured to vector convert the plurality of signals inputted from the plurality of antennas into one signal or to generate a plurality of signals to be transmitted through the plurality of antennas; And
It is connected to the converter by one feeder line, and extracts a plurality of signals from one signal generated by the converter and transfers them to the mobile communication system, or transmits a plurality of signals to be transmitted through the plurality of antennas as one signal. Reconstruction unit generated by the transfer to the conversion unit
Feeder line sharing device comprising a. The method of claim 1,
Wherein,
A first vector converter configured to vector-convert the first signal received from one of the plurality of antennas to generate a converted first signal;
A second vector converter configured to vector-convert a second signal received from one of the plurality of antennas to generate a converted second signal; And
An adder configured to generate one third signal using the converted first signal and the converted second signal;
Feeder line sharing device comprising a. The method of claim 2,
A first signal input / output unit configured to receive the first signal from one of the plurality of antennas or to output a signal transmitted from the reconversion unit;
A first circulator configured to transfer the first signal received by the first signal input / output unit to the first vector converter;
A second signal input / output unit configured to receive the second signal from one of the plurality of antennas or to output a signal transmitted from the reconversion unit;
A second circulator configured to transfer the second signal received by the second signal input / output unit to the second vector converter;
A third signal input / output unit configured to transfer a third signal generated by the adder to the reconversion unit or to receive one signal provided from the reconversion unit;
A divider for generating the single signal into two signals and outputting the first signal through the first signal input / output unit and the second signal input / output unit; And
A third circulator for transmitting one signal received by the third signal input / output unit to the distributor
Feeder line sharing device comprising a. The method of claim 3,
The reconversion unit,
A fourth signal input / output unit which receives the third signal from the third signal input / output unit or provides the one signal to the third signal input / output unit;
A vector discriminator configured to extract the converted first signal and the converted second signal from the third signal;
A fifth signal input / output unit which outputs the converted first signal extracted by the vector discriminator and receives a fourth signal to be provided to the converter; And
A sixth signal input / output unit which outputs the converted second signal extracted by the vector determination unit and receives a fifth signal to be provided to the conversion unit
Feeder line sharing device comprising a. 5. The method of claim 4,
A fourth circulator for transmitting the third signal received by the fourth signal input / output unit to the vector discriminator;
A third vector converting unit converting a fourth signal input from the mobile communication system to generate a converted fourth signal;
A fifth circulator configured to transfer the fourth signal to the third vector converter;
A fourth vector converting unit converting a fifth signal input from the mobile communication system to generate a converted fifth signal;
A sixth circulator configured to transfer the fifth signal to the fifth vector converter; And
An adder configured to generate the single signal using the converted fourth signal and the converted fifth signal;
Feeder line sharing device comprising a. The method of claim 2,
And a phase difference between the converted first signal and the converted second signal is 90 degrees.
KR1020120013944A 2012-02-10 2012-02-10 Apparatus of combining cables on communication systems KR20130092296A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170025339A (en) 2015-08-28 2017-03-08 에스케이텔레콤 주식회사 Method and Apparatus for Sharing Feeder of Base Station, And Base Station Apparatus Using the Same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170025339A (en) 2015-08-28 2017-03-08 에스케이텔레콤 주식회사 Method and Apparatus for Sharing Feeder of Base Station, And Base Station Apparatus Using the Same

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