KR20070044956A - Method and system for eliminating shadow area for satellite dmb service by sharing optical core - Google Patents

Abstract

The present invention relates to a method and system for removing shadow area of satellite DMB service through optical core sharing.

The present invention provides a mobile communication system for providing a mobile communication service and a satellite digital multimedia broadcasting (DMB) service, comprising: a mobile communication terminal receiving and using the mobile communication service and the satellite DMB service; A first gap filler configured to receive a TDM signal in a Ku-Band band from a DMB satellite and convert it into a CDM signal in an S-Band band and transmit it to the mobile communication terminal or output using an optical line; A base transceiver station (BTS) for providing the mobile communication service to the mobile communication terminal; A DMB donor which receives the satellite DMB signal from the first gap filler via the optical line and outputs the photonic conversion through photoelectric conversion; A base station donor that receives an RF signal from the base station transmitter via the optical line and outputs the photonic signal through photoelectric conversion; The satellite DMB signal and the RF signal are received from the DMB donor and the base station donor, and an optical core is shared by sharing output wavelengths of the satellite DMB signal received from the DMB donor and the RF signal received from the base station donor. Optical frame distribution (OFD) for sharing and dividing the satellite DMB signal shared with the RF signal through an optical line using the optical core; A second gap filler receiving the satellite DMB signal from the optical distribution box and transmitting the received satellite DMB signal to the mobile communication terminal; And an FMC remote for receiving the satellite DMB signal from the optical distribution box, demodulating and amplifying the RF signal and transmitting the demodulated signal to the mobile communication terminal. Provide a removal system.

According to the present invention, a satellite DMB service can be provided by sharing an optical core of a mobile communication network in a shadow area of a satellite DMB service that does not reach the gap filler, thereby providing a high quality satellite DMB service by removing a shadow area. In addition, it is possible to prevent excessive and redundant investment in the shadow area of the satellite DMB service, thereby reducing the investment cost.

Mobile Communications, Satellite, DMB, Shadow, Optical Repeater

Description

Method and System for Eliminating Shadow Area for Satellite DMB Service by Optical Core Sharing

1 is a diagram schematically showing a system for removing satellite DMB shadow area service according to a first embodiment of the present invention;

2 is a diagram schematically showing a system for removing satellite DMB shadow area according to a second embodiment of the present invention;

3 is a flowchart illustrating a method for providing satellite DMB service in a satellite DMB shadow area service removal system according to an exemplary embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: DMB satellite 110: mobile communication terminal

120: first gap filler 130: base station transmitter

140: DMB donor 150: base station donor

160: light splitter 170: second gap filler

180: FMC Remote 210: Integrated FMC Remote

The present invention relates to a method and system for removing shadow area of satellite DMB service through optical core sharing. More specifically, in a mobile communication network providing a mobile communication service to a mobile communication terminal, when providing a satellite DMB service, an optical core sharing that removes a shadow area of a satellite DMB service is provided by providing a satellite DMB service through an optical core sharing of the mobile communication network. A method and system for eliminating shadowed area through satellite DMB service.

As computer, electronic, and communication technologies have made rapid progress, various wireless communication services using wireless networks have been provided. Accordingly, a service provided by a mobile communication system using a wireless communication network is developing not only a voice service but also a multimedia communication service for transmitting data such as circuit data, packet data, and the like. In recent years, the third generation mobile communication system IMT-2000 (International Mobile Telecommunication 2000) (for example, Code Division Multiple Access (CDMA) 2000 1X, 3X, EV-DO, Wideband CDMA (WCDMA, etc.)) has been commercialized. .

However, the existing mobile communication system has a limitation in providing high-speed wireless Internet due to high base station construction cost and high usage rate of the wireless Internet, and a limited screen size of the mobile communication terminal. Therefore, a high-speed portable Internet service (WiBro: Wireless Broadband Internet) has emerged, which guarantees portability and mobility and can use a high-speed wireless Internet service at a low rate.

The mobile internet service uses various types of portable communication terminals such as laptops, PDAs, and handheld PCs to access the Internet in indoor and outdoor stationary environments and mobile environments at walking speeds and low to medium speeds. It is a possible service. The portable Internet service system uses the 2.3 GHz frequency band and provides mobility of 60 km / h per hour. The downlink transmission rate is 24.8 Mbps, but the uplink transmission rate is 5.2 Mbps. Wireless data system. In addition, the portable Internet service system uses a time division duplex (TDD) in a duplex scheme or an orthogonal frequency division multiple access (OFDMA) / TDMA (multiple access) scheme in order to effectively use an allocated frequency spectrum. Time Division Multiple Access).

On the other hand, with the development of mobile communication technology, the demand for using a broadcast service including a video service, a voice service, etc. in a mobile communication environment has increased rapidly, and digital multimedia broadcasting (DMB) is referred to as 'DMB'. Service has emerged.

The DMB service refers to a broadcasting service that digitally modulates various multimedia data such as video data and audio data and provides the same to a fixed terminal or a portable terminal. In other words, it means a service that can provide high-quality, high-definition broadcasting of CD (Compact Disc) or DVD (Digital Versatile Disc) level to a mobile communication terminal or a vehicle terminal such as a mobile phone, a PDA (Personal Digital Assistant) even while on the move. Unlike conventional analog broadcasting, DMB service is combined with mobile communication network and provides two-way service such as remote purchase, remote medical treatment, and remote education. For example, you can order an advertising product that is broadcast while moving, and you can download the desired educational program.

DMB service is divided into 'terrestrial DMB' and 'satellite DMB' according to service type and network configuration. Satellite DMB service provides DMB service by using satellite, and when satellite DMB broadcasting center sends broadcasting data to satellite, satellite receives it and transmits it to DMB terminals and gap fillers nationwide to provide DMB service. do.

The satellite DMB service system is roughly composed of a satellite broadcasting transmitting station, a satellite, a Gap Filler, and a DMB receiving mobile communication terminal.

In the operation process, various contents such as video, audio, and data are digitized through a codec and transmitted to a satellite broadcasting station, and the satellite broadcasting station multiplexes (MUX) a plurality of digitized contents through an MPEG2 system. Will be sent to the satellite. The satellite receives the content and transmits the content to the DMB receiving mobile terminal through S-band (CDM).

In addition, the satellite transmits the content to the terrestrial repeater through Ku-band (TDM), and the terrestrial repeater converts the Ku-band (TDM) to S-band (CDM) and transmits it to the DMB receiving mobile terminal. Finally, the DMB receiving mobile communication terminal undergoes a decoding process.

In the conventional satellite DMB service system, if the service is difficult due to inaccurate reception angle or terrain / feature and mountain, etc., the service cannot be provided or low quality service is performed based on the minimum reception angle. In order to solve the problem, there is a problem in that economic investment loss occurs, such as unnecessary or excessive investment of equipment.

In addition, in the early stages of construction of satellite DMB facilities, it was often abandoned due to difficulties in commonization and lack of visible area of the parabola antenna for satellite DMB, and additional equipment, rent, and construction cost were excessively required for service and investment. There were many difficulties.

In order to solve the above problems, the present invention provides a satellite DMB service by providing a satellite DMB service through the optical core sharing of the mobile communication network when providing the satellite DMB service in the mobile communication network providing the mobile communication service to the mobile communication terminal. An object of the present invention is to provide a method and a system for removing a shadow area of a satellite DMB service through sharing an optical core.

According to an aspect of the present invention, there is provided a mobile communication system for providing a mobile communication service and a satellite digital multimedia broadcasting (DMB) service, comprising: a mobile communication terminal receiving and using the mobile communication service and the satellite DMB service; A first gap filler configured to receive a TDM signal in a Ku-Band band from a DMB satellite and convert it into a CDM signal in an S-Band band and transmit it to the mobile communication terminal or output using an optical line; A base transceiver station (BTS) for providing the mobile communication service to the mobile communication terminal; A DMB donor which receives the satellite DMB signal from the first gap filler via the optical line and outputs the photonic conversion through photoelectric conversion; A base station donor that receives an RF signal from the base station transmitter via the optical line and outputs the photonic signal through photoelectric conversion; The satellite DMB signal and the RF signal are received from the DMB donor and the base station donor, and an optical core is shared by sharing output wavelengths of the satellite DMB signal received from the DMB donor and the RF signal received from the base station donor. Optical frame distribution (OFD) for sharing and dividing the satellite DMB signal shared with the RF signal through an optical line using the optical core; A second gap filler receiving the satellite DMB signal from the optical distribution box and transmitting the received satellite DMB signal to the mobile communication terminal; And an FMC remote for receiving the satellite DMB signal from the optical distribution box, demodulating and amplifying the RF signal and transmitting the demodulated signal to the mobile communication terminal. Provide a removal system.

In addition, according to another object of the present invention, by receiving a TDM signal of the Ku-Band band from the mobile communication terminal, the DMB satellite to receive and use the mobile communication service and satellite DMB service to convert to the CDM signal of the S-Band band A first gap filler transmitting to a mobile communication terminal or outputting using an optical line, a base transceiver station (BTS) providing the mobile communication service to the mobile communication terminal, and the first gap filler A DMB donor which receives the satellite DMB signal via the optical line and outputs it via photoelectric conversion, and a known station donor that receives the RF signal from the base station transmitter via the optical line and outputs it via photoelectric conversion Receiving the satellite DMB signal and the RF signal from the DMB donor and the base station donor, and receiving the satellite DMB signal received from the DMB donor. And sharing an optical core by sharing the output wavelength of the RF signal received from the base station donor, and branching and outputting the satellite DMB signal shared with the RF signal through an optical line using the optical core. Optical frame distribution (OFD), a second gap filler that receives the satellite DMB signal from the optical distribution box and transmits the satellite DMB signal to the mobile communication terminal, and receives the satellite DMB signal from the optical distribution box as the RF signal. In a satellite DMB service shaded area elimination system comprising an FMC Remote and an integrated FMC Remote in which the second gap filler and the FMC Remote are integrated and demodulated and amplified and transmitted to the mobile communication terminal. A method of providing, the method comprising: (a) the first gap filler receiving the satellite DMB signal from the DMB satellite and feeding 1/2 " Transmitted to the donor via the DMB, and comprising: a base station transmitter transmitting the RF signal to perform wireless communication of the mobile terminal to the base station donor; (b) the DMB donor and the base station donor convert the satellite DMB signal and the RF signal into an optical signal and transmit the optical signal to the optical splitter via the optical line; (c) the optical distributor shares an optical core using sharing of an output wavelength of the satellite DMB signal received from the DMB donor and the RF signal received from the base station donor, and shared using the optical core. Transmitting the satellite DMB signal to the second gap filler, an FMC remote and the integrated FMC remote via the optical path; And (d) the mobile communication terminal receiving the satellite DMB signal from a base station that provides the satellite DMB service to a coverage in which the second gap filler, the FMC remote, and the integrated FMC remote are located. It provides a satellite DMB service providing method through the optical core sharing in the satellite DMB service shadowed area comprising the step of receiving.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a diagram schematically illustrating a system for removing satellite DMB shadow area service according to a first embodiment of the present invention.

The satellite DMB shadow area service removal system according to the first embodiment of the present invention includes a DMB satellite 100, a mobile communication terminal 110, a first gap filler 120, and a base transceiver station (BTS). 130), DMB donor 140, base station donor 150, optical frame distribution (OFD) 160, second gap filler 170 and FMC remote 180 .

The DMB satellite 100 is settled in a stationary orbit about 36,000 km from the ground, and rotates at a speed of 11,000 km per hour, which is the same as the speed of the Earth's rotation. The DMB satellite 100 receives a satellite DMB signal transmitted from a DMB transmitter (not shown) of a satellite DMB broadcasting center (not shown) and transmits it to the mobile communication terminal 110 or the first gap filler 120. Perform.

In general, the DMB satellite 100 includes four 25 MHz Ku-Band repeaters and 36 25 MHz S-Band repeaters that provide a frequency band for transmitting satellite DMB signals to the mobile communication system. The DMB satellite 100 simultaneously transmits an S-Band CDM signal using a frequency of about 2.6 GHz and a Ku-Band time division multiple (TDM) signal using a frequency of 11 to 12 GHz. The CDM signal of the S-Band band is transmitted to the mobile communication terminal 110, and the TDM signal of the Ku-Band band is transmitted to the first gap filler 120.

The mobile terminal 110 is a multimode multiband (MM-MB) capable of supporting a plurality of mobile communication systems including CDMA-2000, EV-DO, WiBro, etc. It is called a terminal. Here, the multi mode may include a synchronous mode, an asynchronous mode, a WiBro mode, a DMB mode, and the like, and the multiband refers to a frequency band used according to an operation mode of the MM-MB terminal. The mobile communication subscriber can use the mobile communication service by selecting an operation mode according to the type of communication service provided in the region where the subscriber is located by using the MM-MB terminal.

The mobile communication terminal 110 according to a preferred embodiment of the present invention receives a DMB antenna for receiving a satellite DMB signal, a DMB tuner for selecting a desired channel signal among the satellite DMB signals, and a DMB tuner so as to use a DMB service. MPEG decoder which decodes the signal in accordance with the MPEG standard for broadcasting, and A / V switch unit that separates the video data or audio data decoded by the MPEG decoder into an A / V (Audio / Video) signal capable of video and audio output. And the like.

In addition, the mobile communication terminal 110 may include a personal digital assistant (PDA), a hand-held PC, a cellular phone, a mobile broadband system (MBS) phone, and the like.

The gap fillers 120 and 170 are shaded area repeaters that are installed in underground spaces, buildings, and dense areas that are difficult to receive radio waves and relay satellite DMB signals. The gap fillers 120 and 170 receive the TDM signals in the Ku-Band band from the DMB satellite 100 and convert them into CDM signals in the S-Band band, and then transmit the converted CDM signals to the mobile communication terminal 110.

The first gap filler 120 according to the preferred embodiment of the present invention includes a parabolic antenna and receives a satellite DMB signal from the DMB satellite 100 and passes the received satellite DMB signal through a signal processor. Branching through a 2-way divider in the first gap filler 120, one way is a coverage antenna via an optical line and the other one way is a DMB donor via a 1/2 "feeder. Transmit to 140.

The satellite DMB signal transmitted to the coverage antenna is transmitted to the mobile communication terminal 110 capable of receiving the satellite DMB signal in the coverage area of the first gap filler 120 to provide the DMB service.

In addition, when a 1/2 "feed line is used, an appropriate input level may be input by coupling at an output terminal of the first gap filler 120, and for example, an in-building DDHS may be used.

The base station transmitter 130 receives and processes a radio communication request from the mobile communication terminal 110 and performs a function of handoff processing and radio resource management. In addition, the base station transmitter 130 receives a call request signal from the mobile communication terminal 110 through a traffic channel of the signal channel and transmits it to a base station controller (not shown). The base station transmitter 130 performs baseband signal processing, wired and wireless conversion, and transmission and reception of wireless signals.

The base station transmitter 130 outputs a service frequency signal to the mobile communication terminal 110, and the base station donor 150 connected to the base station transmitter 130 by a line receives the output signal of the base station transmitter 130 and optically outputs the signal. The signal is converted into a signal and transmitted to the light distribution box 160 through the optical line.

The DMB donor 140 and the base station donor 150 receive satellite DMB signals and RF signals of the first gap filler 120 and the base station transmitter 130, convert them into optical signals, and transmit them to the optical distribution box 160. Perform the function.

The optical distribution box 160 receives the optical signals of the DMB donor 140 and the base station donor 150 through the optical line and branches and transmits them to the second gap filler 170 and the FMC remote 180. The optical distribution box 160 according to the preferred embodiment of the present invention shares the optical core using sharing of the output wavelength of the satellite DMB signal received from the DMB donor 140 and the RF signal received from the base station donor 150. By transmitting the satellite DMB signal to the FMC remote 180 through the function, the FMC remote 180 to provide a satellite DMB service to the mobile communication terminal 110 outside the service coverage area of the second gap filler 170 Do this.

The optical distribution box 160 includes a passive optical splitter and receives an optical signal transmitted from the DMB donor 140 and the base station donor 150 through an optical line to branch into a plurality of optical signals. In addition, each branched optical signal is transmitted to the second gap filler 170 and the FMC remote 180 through the optical line.

The second gap filler 170 receives a satellite DMB signal from the first gap filler 120 through an optical line and provides a satellite DMB service to the mobile communication terminal 110. Accordingly, the second gap filler 170 does not need a satellite antenna and a signal processor, and amplifies the satellite DMB signal received from the optical distribution box 160 using the optical module and transmits the received satellite DMB signal to the mobile communication terminal 110. do.

The FMC remote 180 photoelectrically converts an optical signal received from the optical distribution box 160 through an optical line to generate an RF signal, and generates the RF signal to a plurality of mobile communication terminals 110 through an S-band. Perform the function of sending. The FMC remote 180 is installed on each floor or office in a high-rise building to perform satellite DMB service by eliminating the shadow area in the radio shadow area that the radio wave of the second gap filler 170 does not reach.

2 is a diagram schematically illustrating a system for removing satellite DMB shadow area according to a second embodiment of the present invention.

The satellite DMB shaded area service removal system according to the second embodiment of the present invention integrates the second gap filler 170 and the FMC remote 180 of the satellite DMB shaded area service removal system according to the first embodiment of the present invention. It is configured to include an integrated FMC remote (210).

The integrated FMC remote 210 receives the satellite DMB signal through the optical core sharing from the optical splitter 160 and transmits the satellite DMB signal to the mobile communication terminal 110 through the broadband antenna, and performs the LPA (Linear) service for the satellite DMB service. Power Amplifier, Optical Fiber, and Communication Control Unit (CCU) are embedded.

LPA is a device for amplifying the frequency radiated from the antenna to reach the mobile communication terminal 110, the communication control device is a device for controlling the communication between the mobile communication terminal 110 in the mobile communication system. .

As described above, when providing the satellite DMB service in the satellite DMB shadow area service removal system of FIGS. 1 and 2, the existing mobile communication network (CDMA-2000, EV-DO) is installed in the satellite DMB service shadow area. If the base station is installed in the base station, the first gap filler 120, the second gap filler 170 and the parabolic antenna after the satellite DMB service is provided, the base station is installed in the satellite DMB service shadow area The first gap filler 120 and the second gap filler 170 and a parabola antenna are installed in the repeater to which the reception angle of the satellite DMB signal is secured among the optical repeaters connected to the base station to provide the satellite DMB service.

In addition, when there is no mobile communication network in the shadow area of the satellite DMB service, the adjacent base station or optical repeater provides the DMB service by installing the optical core to the shadow area.

3 is a flowchart illustrating a method for providing satellite DMB service in a satellite DMB shadow area service removal system according to an exemplary embodiment of the present invention.

According to a preferred embodiment of the present invention, the first gap filler 120 receives a Ku-Band band satellite DMB signal from the DMB satellite body 100 and branches through a two-way divider so that one way is covered via an optical line. After transmitting to the antenna (Coverage Antenna) to convert the CD-M signal of the S-Band band, and transmits the converted CDM signal to the mobile communication terminal 110, the remaining one way through the 1/2 "feed line DMB donor ( 140 to (S210).

In addition, the base station transmitter 130 transmits an RF signal to the base station donor 150 to perform wireless communication of the mobile communication terminal 110 (S212).

The DMB donor 140 and the base station donor 150 convert the received satellite DMB signal and the RF signal into an optical signal and transmit the optical signal to the optical distribution box 160 through the optical path (S220 and S222).

The optical distribution box 160 receiving the satellite DMB signal and the RF signal from the DMB donor 140 and the base station donor 150 as an optical signal is received from the satellite DMB signal received from the DMB donor 140 and the base station donor 150. The optical core is shared by sharing the output wavelength of one RF signal. The satellite DMB signal shared using the optical core is transmitted to the second gap filler 170 and the FMC remote 180 through the optical line (S232 and S234). In addition, when the integrated FMC remote 210 is installed in the satellite DMB system, the satellite DMB signal is transmitted to the integrated FMC remote 210 (S230) to provide a satellite DMB service.

 The optical distribution box 160 branches and transmits an optical signal to the second gap filler 170 and the FMC remote 180, thereby leaving the service coverage area of the second gap filler 170, i.e., the mobile communication terminal 110. In addition, the satellite DMB service is provided to the mobile communication terminal 110 existing in the satellite DMB shadow area through the FMC remote 180.

The mobile communication terminal 110 receives a DMB signal from a base station that provides a satellite DMB service to a coverage in which the second gap filler 170, the FMC remote 180, and the integrated FMC remote 210 are located. The second gap filler 170, the FMC remote 180 and the integrated FMC remote 210 provides a satellite DMB service to the mobile communication terminal 110 in its coverage (S240, S242, S244).

The mobile communication terminal 110 receives the DMB signal from the FMC remote 180 which transmits the DMB signal through the optical core sharing when the area where the mobile communication terminal 110 is located is the satellite DMB service shadowed area. Will be provided.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, a satellite DMB service is provided by sharing an optical core of a mobile communication network in a shadow area of a satellite DMB service that does not reach the gap filler, thereby providing a high quality satellite DMB service through the removal of a shadow area. can do.

In addition, it is possible to prevent excessive and redundant investment in the shadow area of the satellite DMB service, thereby reducing the investment cost.

Claims (12)

In a mobile communication system that provides a mobile communication service and satellite DMB (Digital Multimedia Broadcasting) service, A mobile communication terminal receiving and using the mobile communication service and the satellite DMB service; A first gap filler configured to receive a TDM signal in a Ku-Band band from a DMB satellite and convert it into a CDM signal in an S-Band band and transmit it to the mobile communication terminal or output using an optical line; A base transceiver station (BTS) for providing the mobile communication service to the mobile communication terminal; A DMB donor which receives the satellite DMB signal from the first gap filler via the optical line and outputs the photonic conversion through photoelectric conversion; A base station donor that receives an RF signal from the base station transmitter via the optical line and outputs the photonic signal through photoelectric conversion; The satellite DMB signal and the RF signal are received from the DMB donor and the base station donor, and an optical core is shared by sharing output wavelengths of the satellite DMB signal received from the DMB donor and the RF signal received from the base station donor. Optical frame distribution (OFD) for sharing and dividing the satellite DMB signal shared with the RF signal through an optical line using the optical core; A second gap filler receiving the satellite DMB signal from the optical distribution box and transmitting the received satellite DMB signal to the mobile communication terminal; And  An FMC remote receiving the satellite DMB signal from the optical distribution box, demodulating and amplifying the RF signal and transmitting the demodulated signal to the mobile communication terminal. Satellite DMB service shaded area removal system through optical core sharing, comprising a. The method of claim 1, And the mobile communication terminal can simultaneously use a mobile communication service and a satellite DMB service. The method of claim 1, The first gap filler includes a parabolic antenna, and branches the satellite DMB signal through a two way divider in the first gap filler, thereby covering one way through an optical line. An antenna (Coverage Antenna), the remaining one way is transmitted to the DMB donor via a 1/2 "feeder, characterized in that the satellite DMB service shadow area removal system via optical core sharing. The system of claim 1, wherein the system is Receives the satellite DMB signal through the optical core sharing from the optical splitter and transmits to the mobile communication terminal through a broadband antenna, LPA (Linear Power Amplifier), Optical Fiber (Optical-Fiber) for the satellite DMB service And integrated FMC remote with Communication Control Unit (CCU) Satellite DMB service shaded area removal system via optical core sharing, further comprising a. The method of claim 4, wherein And said integrated FMC remote is integrated with said second gap filler and said FMC remote. The method of claim 1, The FMC remote receives the satellite DMB signal from the optical distribution box in the form of an optical signal through the optical line, photoelectrically converts the optical signal to generate the RF signal, and transmits the RF signal through an S-band. Satellite DMB service shadow area removal system using optical core sharing, characterized in that for transmitting to a plurality of the mobile communication terminal. The method of claim 1, wherein in the system: When the optical repeater is installed in the shadow area of the satellite DMB service, the satellite DMB service is provided after the first gap filler and the parabola antenna are installed in the base station of the mobile communication network in the shadow area of the satellite DMB service. Satellite DMB service shaded area removal system through optical core sharing. The method of claim 1, wherein in the system: When the base station of the mobile communication network is installed in the shadow area of the satellite DMB service, the first gap filler and the parabola are provided to the optical repeater in which the reception angle of the satellite DMB signal is secured among the optical repeaters connected to the base station. The satellite DMB service shadowed area removal system using optical core sharing, characterized in that to install the antenna to provide the satellite DMB service. The method of claim 1, wherein in the system: When there is no mobile communication network in the satellite DMB service shadowed area, the optical base core is installed in the neighboring base station or the optical repeater to the satellite DMB service shadowed area to provide the satellite DMB service. Satellite DMB service shaded area removal system through sharing. Receives a Ku-Band band TDM signal from a mobile communication terminal and a DMB satellite, which receives and uses a mobile communication service and a satellite DMB service, converts it into a CDM signal of the S-Band band, and transmits it to the mobile communication terminal, or an optical line A first gap filler (Bap Filler) for outputting using a base station, a base transceiver station (BTS) for providing the mobile communication service to the mobile communication terminal, and the satellite DMB from the first gap filler via the optical line A DMB donor receiving a signal and outputting it through photoelectric conversion, A base station donor receiving and outputting an RF signal through photoelectric conversion from the base station transmitter via the optical line, The DMB donor and the satellite DMB from the base station donor A signal received from the base station donor and the satellite DMB signal received from the DMB donor The optical core is shared by sharing the output wavelength of the RF signal, and the optical core divides and outputs the satellite DMB signal shared with the RF signal through an optical line using the optical core (OFD) A second gap filler receiving the satellite DMB signal from the optical distribution box and transmitting the received satellite DMB signal to the mobile communication terminal; and receiving the satellite DMB signal from the optical distribution box, demodulating and amplifying the RF signal into the mobile communication terminal. In the method of providing a satellite DMB service in a satellite DMB service shaded area removal system comprising a FMC Remote (transmitted) to the terminal and an integrated FMC remote integrated with the second gap filler and the FMC remote, (a) the first gap filler receiving the satellite DMB signal from the DMB satellite body, transmitting the satellite DMB signal to the DMB donor via a 1/2 '' feeder, and the base station transmitter performs wireless communication of the mobile communication terminal; Transmitting the RF signal to the base station donor; (b) the DMB donor and the base station donor convert the satellite DMB signal and the RF signal into an optical signal and transmit the optical signal to the optical splitter via the optical line; (c) the optical distributor shares an optical core using sharing of an output wavelength of the satellite DMB signal received from the DMB donor and the RF signal received from the base station donor, and shared using the optical core. Transmitting the satellite DMB signal to the second gap filler, an FMC remote and the integrated FMC remote via the optical path; And (d) the mobile communication terminal receives the satellite DMB signal from a base station providing the satellite DMB service to a coverage where the second gap filler, the FMC remote, and the integrated FMC remote are located; Steps to be provided Satellite DMB service providing method of satellite DMB service through the optical core sharing in the shadowed area comprising a. The method of claim 10, wherein in step (c), The optical distribution box branches and transmits the optical signal to the second gap filler and the FMC remote to provide the satellite DMB service through the FMC remote to the mobile communication terminal outside the coverage area of the second gap filler. Satellite DMB service providing method of satellite DMB service by sharing the optical core in the shadow area. The method of claim 10, wherein in step (d), The mobile communication terminal receives the satellite DMB signal from the FMC remote that transmits the satellite DMB signal through the optical core sharing when the area where the mobile communication terminal is located is the shadow area of the satellite DMB service. Method of providing satellite DMB service by sharing optical core in shadow area.

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