KR101319860B1 - In-building mimo compatible device - Google Patents

In-building mimo compatible device Download PDF

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Publication number
KR101319860B1
KR101319860B1 KR1020130061667A KR20130061667A KR101319860B1 KR 101319860 B1 KR101319860 B1 KR 101319860B1 KR 1020130061667 A KR1020130061667 A KR 1020130061667A KR 20130061667 A KR20130061667 A KR 20130061667A KR 101319860 B1 KR101319860 B1 KR 101319860B1
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KR
South Korea
Prior art keywords
mimo
rrh
unit
building
communication company
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KR1020130061667A
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Korean (ko)
Inventor
김태기
Original Assignee
(주)더원아이앤씨
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Priority to KR1020130061667A priority Critical patent/KR101319860B1/en
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Publication of KR101319860B1 publication Critical patent/KR101319860B1/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
    • H04B7/15507—Relay station based processing for cell extension or control of coverage area

Abstract

PURPOSE: An in-building multiple-input multiple-output (MIMO) compliant device is provided not to require a task for additionally installing a feeder and demonstrating the MIMO effect at the same time. CONSTITUTION: A first MIMO commonality (71) is connected to a second remote radio head (RRH) (65) of a second communication company. The first MIMO commonality is connected to a first antenna unit (50). The first MIMO commonality comprises a device, which filters each of specific frequency bands of a first communication company and the second communication company. A second MIMO commonality (72) is connected to a first RRH (55) of the first communication company. The second MIMO commonality is connected to a second antenna unit (60). The second MIMO commonality comprises a device, which filters each of specific frequency bands of the first and the second communication company. [Reference numerals] (71,72) 2 MIMO sharers

Description

In-Building MIMO compatible device

The present invention relates to an in-building MIMO compatible apparatus, and more particularly, to an in-building MIMO compatible apparatus for sharing a feeder line and an antenna for each communication company when the RRH is installed in an in-building.

In general, the in-building system provides a mobile communication service with various base stations for in-building in various buildings. In buildings, services are performed by carriers using multiple antennas and feeders in various radio environments.

Whenever PCS, WCDMA, and WiBro services are provided, separate equipment and facilities are installed, which can make it difficult to distinguish not only the equipment but also the facilities during maintenance. For this reason, if a separate facility for each communication method is promoted, the initial investment cost of the service provider may be excessive, which may cause a rise in communication cost.

In order to solve this problem, a previously filed Republic of Korea Patent Publication No. 10-0964247 (2010.06.09) has disclosed a feeder line sharing system in the in-building. 1 is a block diagram showing a feeder line sharing system in the in-building according to a pre-pending patent document.

As shown in FIG. 1, the system includes a multi-band repeater 110, a plurality of signal level controllers 120, a feeder line sharing unit 130, and a distribution unit 140. The multi-band repeater 110 is a repeater for providing a service having at least two or more bands to the in-building, and transmits and receives a PCS signal, WCDMA signal and WiBro signal. The signal level adjusting unit 120 receives a signal output from the multi-band repeater 110 and down to a signal of a predetermined level and outputs the signal. The feeder line sharing unit 130 receives the signals output from the plurality of signal level adjusting units 120 and filters the bands, respectively, and outputs the filtered signals to the distribution unit 140 through the feeder line sharing terminal.

Figure 2 is a schematic diagram showing a conventional in-building communication service.

That is, referring to FIG. 2, the first antenna unit 1 of the A mobile communication company base station and the second antenna unit 2 of the B mobile communication company base station are provided as an example. In the first antenna unit 1, The first feed line 11 is connected to the first RRH 13, and the second antenna unit 2 is configured to be connected to the second RRH 23 through the second feed line 21.

In this case, a first port 131 and a second port 132 are formed in the first RRH 13, and both ends of the first feed line 11 are respectively formed of the first port 131 and the first antenna unit 1. ) The second port 132 is an extra port to which the third feed line 12 is connected, and the third feed line 12 is dummy. In addition, a third port 231 and a fourth port 232 are formed in the second RRH 23, and both ends of the second feed line 21 are connected to the third port 231 and the second antenna unit 2, respectively. Is connected to. The fourth port 232 is a spare port to which the fourth feed line 22 is connected, and the fourth feed line 22 is dummy.

However, since the conventional inbuilding communication service performs an independent inbuilding service for each carrier, the carriers have to install additional feed lines in order to achieve the multiple-input / multiple-output (MIMO) effect of the RRH. have.

In addition, the technology disclosed in the prior document, as a device for transmitting PCS, WCDMA, CDMA, WiBro, LTE, etc., which are divided into various communication schemes into a single feeder via a feeder line sharing unit, with a single cable, Although it is possible to obtain a cost and time saving effect for the purpose, there is a problem in that a desired data rate cannot be obtained to be applied to an LTE service requiring a relatively high speed.

Patent Document: Republic of Korea Patent Publication No. 10-0964247 (2010.06.09)

In order to solve such a conventional problem, an object of the present invention is to provide an in-building MIMO compatible device that is implemented to obtain a fast data rate while not requiring additional laying of a feeder and at the same time exhibiting a MIMO effect. .

An in-building MIMO compatible apparatus according to the present invention is connected to a first RRH of a first telecommunication company and a second RRH of a second telecommunication company, a first antenna unit of a first telecommunication company connected to the first RRH, and a connection to the second RRH. A second antenna unit of a second communication company, a first MIMO sharing unit connected to both the first RRH and the second RRH to output a signal to the first antenna unit, and both the first RRH and the second RRH And a second MIMO sharing unit for outputting a signal to the second antenna unit.

The in-building MIMO compatible device according to the present invention greatly reduces facility costs by utilizing existing installed feeders and antennas, and doubles the data rate by making MIMO effects suitable for LTE service, thereby dramatically improving the quality of communication services. It is a very useful invention that can be improved.

1 is a block diagram showing a feeder line sharing system in the in-building according to a pre-pending patent document,
2 is a schematic view showing a conventional in-building communication service,
3 is a schematic view showing an in-building MIMO compatible apparatus according to an embodiment of the present invention;
Figure 4 shows an example of the use state of the in-building MIMO compatible apparatus according to an embodiment of the present invention.

Hereinafter, the technical configuration of the in-building MIMO compatible apparatus according to the accompanying drawings will be described in detail.

3 is a configuration diagram schematically showing an in-building MIMO compatible apparatus according to an embodiment of the present invention, and FIG. 4 shows an example of a state of use of the in-building MIMO compatible apparatus according to an embodiment of the present invention.

As shown in FIG. 3 and FIG. 4, the in-building MIMO compatible apparatus according to an embodiment of the present invention has a secondary path in addition to a primary path when a remote radio head is installed in an in-building. Connect the paths to create multiple-input / multiple-output (MIMO) effects.

For example, the in-building MIMO compatible apparatus according to an embodiment of the present invention transmits the 800MHz band, the 1,8 ㎓, 2.1 ㎓ band by using the LG U Plus feeder and the feeder of SK Telecom to transmit a single feeder. Device.

An in-building MIMO compatible apparatus according to an embodiment of the present invention includes a first RRH 55 of a first communication company and a second RRH 65 of a second communication company, a first antenna unit 50, and a second antenna. A unit 60 and a MIMO compatible unit 70 are included.

The first RRH 55 has a first port 551 and a second port 552, and the second RRH 65 has a third port 651 and a fourth port 652. The first antenna unit 50 is an antenna of the first communication company, and is connected to the first RRH 55. In addition, the second antenna unit 60 is an antenna of the second communication company, and is connected to the second RRH 65. The first feed line 52 is connected to the first port 551, and the second feed line 53 is connected to the second port 552. In addition, a fourth feed line 62 is connected to the third port 651, and a fifth feed line 63 is connected to the fourth port 652.

The MIMO compatible unit 70 includes a first MIMO sharing unit 71 and a second MIMO sharing unit 72.

The first MIMO sharing unit 71 is connected to both the first RRH 55 and the second RRH 65 to output a signal to the first antenna unit 50. In this case, the first MIMO sharing unit 71 includes a fifth port 712, a sixth port 713, and a seventh port 711. The second MIMO sharing unit 72 is connected to both the first RRH 55 and the second RRH 65 to output a signal to the second antenna unit 60. In this case, the second MIMO sharing unit 72 includes an eighth port 722, a ninth port 723, and a tenth port 721.

In the above, the first feed line 52 connects the first RRH 55 and the first MIMO sharing unit 71, and the second feed line 53 connects the first RRH 55 and the second MIMO sharing unit 72. ), And the third feed line 51 connects the first MIMO sharing unit 71 and the first antenna unit 50. In addition, the fourth feed line 62 connects the second RRH 65 and the second MIMO sharing unit 72, and the fifth feed line 63 connects the second RRH 65 and the first MIMO sharing unit 71. The sixth feed line 61 connects the second MIMO sharing unit 72 and the second antenna unit 60.

In addition, the first MIMO sharing unit 71 and the second MIMO sharing unit 72 are integrally provided in the modular boxed MIMO compatible unit 70.

That is, the first sharing unit 71 includes a means for filtering a specific frequency band of the first communication company and a means for filtering a specific frequency band of the second communication company, and the means for filtering a specific frequency band of the first communication company. At the same time that the first RRH 55 is connected to the first feed line 52, the second RRH 65 is connected to the fourth feed line 62 to a means for filtering a specific frequency band of the second communication company.

In addition, the second sharing unit 72 includes a means for filtering a specific frequency band of the second communication company and a means for filtering a specific frequency band of the first communication company, and a means for filtering a specific frequency band of the second communication company. While the second RRH 65 is connected to the fourth feed line 62, the first RRH 55 is connected to the first feed line 52 to a means for filtering a specific frequency band of the first communication company.

That is, in the conventional in-building system, each communication company independently services the in-building system, and in order to achieve the MIMO effect of the RRH, a feeder should be additionally provided. An in-building MIMO compatible device according to an embodiment of the present invention. Without additionally installing a feeder line is based on the first carrier to share the feeder of the other company (second carrier) as it is. This significantly reduces facility costs and doubles data rates, dramatically improving the quality of communications services.

In summary, the in-building MIMO compatible apparatus according to an embodiment of the present invention may include, for example, a first path TX0 / RX0 in performing LTE service requiring a relatively high speed, as shown in FIGS. 3 and 4. By implementing the second path TX1 / RX1 to transmit and receive simultaneously, the data rate can be doubled.

Until now, the in-building MIMO compatible apparatus according to the present invention has been described with reference to the embodiments shown in the drawings, but this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible. . Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

55: first RRH 65: second RRH
50: first antenna unit 60: second antenna unit
71: first MIMO sharing unit 72: second MIMO sharing unit 72
70: MIMO compatible unit 52: first feeder
53: second feed line 51: third feed line
62: fourth feeder line 63: fifth feeder line
61: sixth feeder

Claims (3)

Means for connecting to a first RRH 55 of a first carrier, to a second RRH 65 of a second carrier, to a first antenna unit 50, and to filter specific frequency bands of the first and second carriers. A first MIMO sharing unit 71 provided; And
Connected to the second RRH 65 of the second communication company, connected to the first RRH 55 of the first communication company, connected to the second antenna unit 60, and filtering specific frequency bands of the first and second communication companies A second MIMO sharing unit 72 provided with a means; including the provided MIMO compatible unit 70,
The first path TXO / RXO through the first RRH 55, the first MIMO sharing unit 71, and the first antenna unit 50, the first RRH 55 and the second MIMO sharing unit 72. And transmit / receive data of the first communication company through the second path TX1 / TX2 through the second antenna unit 60,
A first path TXO / RXO through the second RRH 65, the second MIMO sharing unit 72, and the second antenna unit 60, the second RRH 65 and the first MIMO sharing unit ( 71) and transmit / receive data of the second communication company through the second path TX1 / RX1 through the first antenna unit 50,
In-building MIMO compatible device, characterized in that to double the data transmission / reception speed of the first and second communication companies. delete The method according to claim 1,
The first MIMO sharing unit (71) and the second MIMO sharing unit (72) is an in-building MIMO compatible device, characterized in that integrally provided in the modular box-shaped MIMO compatible unit (70).
KR1020130061667A 2013-05-30 2013-05-30 In-building mimo compatible device KR101319860B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101768995B1 (en) * 2015-05-07 2017-08-30 주식회사 서화정보통신 In-building mobile communication relay apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030004533A (en) * 2001-07-05 2003-01-15 주식회사 사이럭스 테크놀러지 Device and method for using common feeder cable of plural base station system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030004533A (en) * 2001-07-05 2003-01-15 주식회사 사이럭스 테크놀러지 Device and method for using common feeder cable of plural base station system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101768995B1 (en) * 2015-05-07 2017-08-30 주식회사 서화정보통신 In-building mobile communication relay apparatus

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