KR100860229B1 - System for repeating to microwave bandwidth - Google Patents

Abstract

A microwave band relay system is disclosed. The system according to the present invention receives a base station signal through a wired connection or wireless communication with a base station, a donor for converting and outputting an intermediate frequency of a microwave band, and a first micro for transmitting an intermediate frequency of the donor to a wireless relay section. A second microwave interface module for receiving the intermediate frequency of the donor by wireless communication with the wave interface module, the first microwave interface module, and for outputting the intermediate frequency of the donor output from the second microwave interface module to the corresponding service area. The optical signal received in connection with the first remote and the optical path for modulating the output of the donor or modulating the intermediate frequency of the donor into the optical signal and outputting the optical signal through the expansion optical module is received through the optical module. The service after tampering And a second remote for output to the area. Accordingly, the present invention can not only implement a mobile communication relay system inexpensively but also operate a mobile communication service through various relay system design schemes in the microwave band.

Microwave, repeater

Description

Microwave Band Relay System {SYSTEM FOR REPEATING TO MICROWAVE BANDWIDTH}

1 is a block diagram showing a microwave band relay system according to an embodiment of the present invention,

2 is a block diagram showing a microwave band relay system according to another embodiment of the present invention,

3 is a block diagram showing a microwave band relay system according to another embodiment of the present invention,

4 is a block diagram showing a microwave band relay system according to another embodiment of the present invention,

5 is a configuration diagram showing a microwave band relay system according to another embodiment of the present invention,

6 is a block diagram showing a microwave band relay system according to another embodiment of the present invention,

7 is a block diagram showing a microwave band relay system according to another embodiment of the present invention,

8 is a block diagram showing a microwave band relay system according to another embodiment of the present invention, and

9 is a block diagram illustrating a microwave band relay system according to another embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: base station 200: microwave repeater

210: donor 211: first microwave interface module

220: first remote 221: second microwave interface module

222: third microwave interface module

230: second remote 231: fourth microwave interface module

240: in-building repeater 250: third remote

300: light path

The present invention relates to a relay system in a microwave band, and more particularly, to a microwave band relay system for maximizing operation efficiency corresponding to each relay service area in various wireless communication environments.

In general, a mobile communication service system includes a base station, a base station controller, an exchange station, and a mobile communication terminal. Here, the base station and the mobile communication terminal communicates in a constant frequency band, each base station has a constant call radius cell. Therefore, by appropriately arranging each base station so that the call radius of each base station overlaps each other, the area where the call is possible can be expanded.

However, even if the service area is covered by the arrangement of such a plurality of base stations, a call shade area that is impossible to call occurs in island areas, underground spaces of large buildings, and inside skyscrapers. As a way to solve the problems caused by the occurrence of the call shadow area, the shadow area was solved by installing a repeater in the shadow area.

Among the repeaters for eliminating the shadow area is a microwave repeater. The microwave repeater includes a donor and a remote for relaying a signal between a base station and a mobile communication terminal. The donor receives a signal of a commercial frequency from a base station, converts the signal into a microwave signal, and transmits the converted microwave signal to the remote device via wireless. That is, the donor receives a signal from a base station, converts the received signal into a microwave frequency through a microwave module provided therein, and transmits the received signal to a remote device installed in a remote shadow area through an antenna.

In addition, the remote converts the signal of the microwave frequency transmitted from the donor back to the signal of the commercial frequency, and amplifies the high power as needed to expand the new coverage. In other words, the antenna receives the transmitted signal converted to the microwave frequency at the antenna, converts it to the commercial frequency through a series of processes such as filtering, low noise amplification, high power amplification, and frequency conversion, and shades the converted commercial frequency signal. Send to the area. The above process focuses on the forward transport link process, and the reverse transport link process proceeds in the reverse order similar to the forward transport link process.

Furthermore, the microwave repeater used in the mobile communication service is the same equipment as that of the conventional optical repeater which is divided into a donor and a remote, receives a base station signal from the donor, and transmits the signal to the remote to extend the local service area. . However, the microwave repeater does not need to lease the optical path, and although it is possible to design a wide variety of repeater systems according to the applicable characteristics, it is used only as optical repeater-type equipment in the mountain, islands difficult to install the optical path.

Accordingly, it is necessary to design a relay system using the microwave repeater in more various ways.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a microwave band relay system for providing a relay system suitable for each service area placed in various wireless communication environments.

In order to achieve the above object, the present invention provides a donor for receiving a base station signal through a wired or wireless connection with a base station, converting the frequency into an intermediate frequency of a microwave band, and outputting the intermediate frequency of the donor to a predetermined remote via a wireless relay section. Each microwave interface module for receiving the intermediate frequency of the donor output from the microwave interface module for receiving the intermediate frequency of the donor through a wireless relay section to output a signal for output to the corresponding service area, or Provided is a microwave band relay system having a remote for modulating an intermediate frequency into an optical signal and outputting the optical signal to an optical fiber connected through an extended optical module.

A microwave band relay system according to the first aspect of the present invention for achieving the above object is a donor for receiving the base station signal through a wired connection or wireless communication with the base station to convert to the intermediate frequency of the microwave band, and outputs; A first microwave interface module for transmitting an intermediate frequency of the donor to a wireless relay section, a second microwave interface module for receiving an intermediate frequency of the donor by wireless communication with the first microwave interface module, and the second Outputting the modulated intermediate frequency of the donor output from the microwave interface module into a signal for outputting to the service area, or outputting the modulated intermediate frequency of the donor into an optical signal connected to the optical fiber via an extended optical module 1 remote and phase Receives the optical signal to be received is connected to the optical line through the optical module and modulation into an electric signal is characterized in that a second remote for outputting a corresponding service area.

In addition, the microwave band relay system according to the second aspect of the present invention for achieving the above object, for receiving the base station signal through a wired connection or wireless communication with the base station for converting to the intermediate frequency of the microwave band for output A plurality of first microwave interface modules for transmitting donors, intermediate frequencies of the donors to a plurality of wireless relay sections, and a plurality of first microwave interfaces for receiving the intermediate frequencies of the donors respectively corresponding to the plurality of first microwave interface modules And a plurality of remotes, each corresponding to the second microwave interface module and the plurality of second microwave interface modules, to receive an intermediate frequency of the donor and to modulate and output a signal for output to each service area. It features.

In addition, the microwave band relay system according to the third aspect of the present invention for achieving the above object, for receiving the base station signal through a wired connection or wireless communication with the base station for converting and outputting to the intermediate frequency of the microwave band A donor, a first microwave interface module for transmitting an intermediate frequency of the donor to a wireless relay section, a second microwave interface module for receiving an intermediate frequency of the donor by wireless communication with the first microwave interface module, and A first remote and the link for modulating and outputting the intermediate frequency of the donor output from the second microwave interface module to a signal for outputting to the service area, or for modulating and outputting the intermediate frequency of the donor to a link channel signal Channel signal A third microwave interface module for outputting to the wireless relay section, a fourth microwave interface module for wireless communication with the third microwave interface module, and the link channel signal output from the fourth microwave interface module. And a second remote that modulates and outputs a signal for outputting to the service area, or modulates and outputs the link channel signal to a signal for relaying to the Nth remote again.

Hereinafter, a preferred embodiment of the microwave band relay system according to the present invention with reference to the accompanying drawings in more detail.

First, various design schemes of the microwave band relay system will be described in detail based on a forward transmission link process transmitted from the base station 100 to the mobile communication terminal.

1 is a block diagram illustrating a microwave band relay system according to an embodiment of the present invention. As shown in FIG. 1, the microwave band relay system receives a base station 100 signal provided at a commercial frequency from a base station 100 and a base station 100 through a wired connection, and receives the received base station 100 signal. Is converted into an intermediate frequency of the microwave band and outputs the donor 210, the first microwave interface module 211 connected to the donor 210, the first microwave interface module 211 and the wireless in the microwave band The optical path of the second microwave interface module 221 and the second microwave interface module 221 for communication to receive the intermediate frequency of the donor 210 and modulate the optical signal into an optical signal, and then connect the optical path through the expansion optical module. The optical signal is received through the first remote 220 and the optical path 300 for outputting the modulated optical signal to the optical signal 300, and modulated into an electrical signal. And a second remote unit 230 for outputting a modulated power frequency signal to the service area.

In addition, the system additionally mounts the expansion optical module provided in the first remote 220 to the second remote 230, so that the additional remote between the second remote 230 and the Nth remote connected by the optical path 300. You can also implement interworking. In addition, the first remote 220 not only provides the intermediate frequency of the donor 210 output from the second microwave interface module 221 to the second remote 230, but also the intermediate frequency of the donor 210. It is also desirable to have a function for outputting to the service area after converting to the commercial frequency.

Furthermore, the donor 210 and the microwave repeater 200 implemented as a remote is not only usable outdoors, but also can be implemented in a service area such as in-building or subway, so as shown in Figure 2 distributed relay It is also possible to implement it as a system.

To this end, the microwave band relay system shown in FIG. 2 is connected to the second microwave interface module 221, respectively, to output a plurality of intermediate frequencies for the base station 100 signal to an internal local area such as in-building. It is a preferred configuration to further include the in-building repeater 240.

The microwave band relay system performs wireless communication between the base station 100 and the donor 210 in order to optimize the link between the base station 100 and the donor 210 constituting the microwave repeater 200 as shown in FIG. 3. The base station 100 may be provided to the donor 210 through the signal, and wireless communication is performed between the base station 100 and the donor 210 even when the base station 100 is implemented as a distributed relay system as shown in FIG. 4. It is also possible to implement the configuration.

5 is a block diagram showing a microwave band relay system according to another embodiment of the present invention. As shown in FIG. 5, another application method of the microwave band relay system is a donor for receiving a signal of the base station 100 through a wired connection with the base station 100 and converting the signal into an intermediate frequency of the microwave band. 210, a plurality of first microwave interface modules 211 connected to the donor 210 and having different antenna directing points, respectively, to perform wireless communication in correspondence with the plurality of first microwave interface modules 211, respectively. Intermediate frequencies of the donor 210 provided from the corresponding second microwave interface module 221 in correspondence with the plurality of second microwave interface modules 221 and the plurality of second microwave interface modules 221, respectively. It includes a plurality of remotes for outputting to the service area through the process of converting to a commercial frequency.

At least one second microwave interface module 221 of the plurality of second microwave interface module 221 is an integrated module integrated with the RF relay module of the corresponding remote among the plurality of remote, as shown in FIG. It is preferable that the configuration is implemented as. This may be implemented to wirelessly communicate for link optimization between the base station 100 and the donor 210, as shown in FIG.

8 is a block diagram illustrating a microwave band relay system according to another embodiment of the present invention. As shown in FIG. 8, the microwave band relay system according to the present embodiment is configured to cascade the remotes, and emits a service signal from a remote receiving a signal through a microwave link, and services. Another microwave interface module for link expansion is provided with the radiated service signal to allow the service to be linked with another remote.

To this end, the system is provided with a donor 210, the intermediate frequency of the donor 210 for receiving the base station 100 signal through a wired connection with the base station 100 to convert to the intermediate frequency of the microwave band and outputs it. A first microwave interface module 211 for transmitting to a wireless relay section to which the antenna is directed, a second microwave interface module 221 for receiving a signal provided from the first microwave interface module 211, and Modulating the intermediate frequency of the donor 210 output from the second microwave interface module 221 into a signal for outputting to the service area, or modulating the intermediate frequency of the donor 210 into a link channel signal. The first remote 220 for outputting the link channel, the link channel is generated in the first remote 220 is connected to the first remote 220 A third microwave interface module 222 for outputting to a wireless relay section directed by an antenna having a call; a fourth microwave interface module 231 performing wireless communication with the third microwave interface module 222; And a second remote 230 for modulating and outputting the link channel signal output from the four microwave interface module 231 into a signal for relaying to the third remote 250 again.

The third remote 250 may be implemented to output the received link channel signal to the Nth remote again.

In addition, the above-mentioned microwave band is preferably implemented in the frequency band of 11GHz, it is also possible to be implemented in the frequency band of 18GHz or other frequency bands.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below. I can understand that you can.

Therefore, according to the present invention, various relay system design methods are proposed in the microwave band, so that the mobile communication relay system can be implemented at low cost and the mobile communication service can be operated at low cost.

Claims (11)

A donor configured to receive a base station signal through a wired connection or wireless communication with the base station and to convert the frequency signal into an intermediate frequency of a microwave band; A first microwave interface module connected to the donor by wire and configured to receive the intermediate frequency converted by the donor through the wire and transmit the received frequency to a wireless relay section; A second microwave interface module for wirelessly communicating with the first microwave interface module to receive an intermediate frequency of the donor; It is connected to the second microwave interface module by wire, receives the intermediate frequency from the second microwave interface module via the wire, and modulates the received intermediate frequency into a signal for outputting to the service area. Or a first remote for modulating the received intermediate frequency into an optical signal and outputting the optical signal to an optical path connected through an extended optical module; And And a second remote for receiving an optical signal received in connection with the optical path through an optical module, modulating the optical signal into an electrical signal, and outputting the optical signal to a corresponding service area. The system of claim 1 wherein the system is And a plurality of in-building repeaters each connected to the second microwave interface module to modulate the donor's intermediate frequency into a signal for output to an internal local region. The method of claim 1, wherein the donor A terminal signal provided from a mobile communication terminal located in the service area is received as an intermediate frequency of a microwave band through the first remote or the second remote and modulated into a signal for transmission to the base station and outputs the modulated signal. Microwave Band Relay System. The method according to any one of claims 1 to 3, wherein the intermediate frequency is Microwave band relay system, characterized in that the frequency band of 11GHz or the frequency band of 18GHz, or a separate commercially available microwave band. delete delete delete delete A donor configured to receive a base station signal through a wired connection or wireless communication with the base station and to convert the frequency signal into an intermediate frequency of a microwave band; A first microwave interface module connected to the donor by wire and configured to receive the intermediate frequency converted by the donor through the wire and transmit the received frequency to a wireless relay section; A second microwave interface module for wirelessly communicating with the first microwave interface module to receive an intermediate frequency of the donor; It is connected to the second microwave interface module by wire, receives the intermediate frequency from the second microwave interface module via the wire, and modulates the received intermediate frequency into a signal for outputting to the service area. Or a first remote for modulating and outputting the received intermediate frequency into a link channel signal; A third microwave interface module for outputting the link channel signal to an antenna-oriented wireless relay section; A fourth microwave interface module for wireless communication with the third microwave interface module; And A second modulating and outputting the link channel signal output from the fourth microwave interface module into a signal for outputting to the service area, or a modulating and outputting the link channel signal into a signal for relaying to the Nth remote again Microwave band relay system comprising a remote. The method of claim 9, wherein the donor is A terminal signal provided from a predetermined mobile communication terminal located in the service area is received as an intermediate frequency of a microwave band through at least one of the first remote, the second remote, or the Nth remote, and is transmitted to the base station. Microwave band relay system, characterized in that for outputting the modulated signal. 11. The method of claim 9 or 10, wherein the intermediate frequency is Microwave band relay system, characterized in that the frequency band of 11GHz or the frequency band of 18GHz, or a separate commercially available microwave band.

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