KR100894433B1 - Method and apparatus for providing mobile communication relay service using FTHC network - Google Patents

Abstract

Disclosed are a method and apparatus for providing a mobile communication relay service using an FTTH network. According to a preferred embodiment of the present invention, by receiving the RF signal from the base station of the mobile communication as an optical signal, the wavelength multiplexed optical signal of the signal related to the optical signal of the received RF signal and other services provided through the FTTH network There is provided a mobile communication relay service providing method of transmitting in a split scheme, wherein an optical signal of an RF signal is converted back to an RF signal and output from an ROU installed in an FTTH network.

According to the present invention, it is possible to utilize not only wired communication service but also wireless mobile communication service using the already established FTTH network, and to increase the utilization of the FTTH network and provide wired / wireless communication service by using the already established FTTH network. It also has the advantage of reducing costs.

FTTH, optical cable, PON, wavelength division multiplexing, WDM, CWDM, relay

Description

Method and apparatus for providing mobile communication relay service using FTHC network {Method and apparatus for mobile communication relay by using FTTH network}

1 is a view showing the configuration of the FTTH network that can be used in the present invention.

2 is a diagram illustrating a configuration of a mobile communication relay service system using an FTTH network according to an embodiment of the present invention.

3 is a diagram illustrating a configuration of a mobile communication relay service system using an FTTH network according to another exemplary embodiment of the present invention.

4 is a diagram illustrating a configuration of a relay apparatus for providing a mobile communication relay service using an FTTH network according to an embodiment of the present invention.

FIG. 5 is a flowchart illustrating an order in which an RF signal received by a base station of a mobile communication service is delivered to an ROU using an FTTH network according to an embodiment of the present invention.

FIG. 6 is a flowchart illustrating a sequence in which a mobile communication relay service in which an RF signal received in an ROU is delivered to a base station of a mobile communication service using an FTTH network according to an exemplary embodiment of the present invention.

The present invention relates to a method and apparatus for providing a mobile communication relay service. More specifically, the present invention relates to a mobile communication service using an FTTH network, which can provide various communication relay services including not only broadcasting, Internet, and telephone but also mobile communication using the FTTH network. It relates to a relay service providing method and apparatus.

FTTH (Fiber-To-The-Home) network is a telecommunication network that provides broadband communication service by installing optical fiber from the telephone company to each home. It is also called 'home optical cable' or 'home optical cable'.

The FTTH network has an advantage of providing a fast and stable communication service compared to the conventional ASL (Asymmetric Digital Subscriber Line) by connecting the optical cable to each home or office.

However, the FTTH network has a disadvantage in that a lot of costs are generated, such as laying an optical fiber in each home and separately installing (ONU: Optical Network Unit or ONT: Optical Network Terminal).

On the other hand, in the conventional mobile communication service, there is a problem in that a shaded area where radio waves cannot reach is generated and a base station or a repeater must be installed to provide a wireless communication service to such a shaded area.

Since the installation of such a base station or a repeater is expensive, there is a need for a method that can be utilized for a mobile communication service as well as a wired communication service using an already established FTTH network.

In order to solve the above problems, the present invention proposes a method and apparatus for providing a mobile communication relay service using an FTTH network that can be used for a mobile communication service as well as a wired communication service using an already established FTTH network.

In addition, the present invention proposes a method and apparatus for providing a mobile communication relay service using an FTTH network which can increase the utilization of the FTTH network and reduce the cost for providing wired / wireless communication service by using an already established FTTH network.

Still other objects of the present invention will be readily understood through the following description of the embodiments.

In order to achieve the above object, according to an aspect of the present invention there is provided a method for providing a mobile communication relay service using the FTTH network.
A method for providing a mobile communication relay service using a fiber-to-the-home (FTTH) network, the method comprising: receiving, by a first relay device, a first optical signal from a base station of a mobile communication network and a second optical signal of the FTTH network (a); (B) transmitting, by the first relay device, the first optical signal and the second optical signal by using a wavelength division multiplexing (WDM) method using an optical communication line of the FTTH network; A second relay device separates the WDM system optical signal from the first relay device so that the first optical signal is a mobile communication remote optical unit (ROU), and the second optical signal is an ONT (Optical Network) of the FTTH network. Terminal), transmitting (c); (D) receiving, by the second relay device, a third optical signal from the mobile communication ROU and a fourth optical signal from the ONT of the FTTH network; (E) transmitting, by the second relay device, the third optical signal and the fourth optical signal using an optical communication line of the FTTH network in a wavelength multiplexed division scheme; And separating, by the first relay device, the WDM scheme optical signal from the second relay device, and transmitting the third optical signal to a base station of the mobile communication network and the fourth optical signal to an OLT of the FTTH network. f), wherein the first optical signal received by the first relay device is generated by converting a radio frequency (RF) signal of the base station of the mobile communication network and is received by the second relay device An optical signal is provided by a mobile communication relay service providing method, wherein the mobile communication ROU is generated by converting an RF signal received from a mobile communication terminal.
The first optical signal received by the first relay device may be generated by a master hub unit (MHU) connected with a base station of the mobile communication network to convert an RF signal from the mobile communication network base station.
The mobile communication ROU receiving the first optical signal may convert the first optical signal into an RF signal for a mobile communication service and output the converted RF signal.
The third optical signal received by the second relay device may be generated by the mobile communication ROU converting an RF signal from the mobile communication terminal.
The third optical signal may be converted into an RF signal for mobile communication in a master hub unit (MHU) connected to a base station of the mobile communication network.
The first relay device and / or the second relay device may provide the first optical signal and the third optical signal related to the RF signal through the FTTH network prior to transmitting the optical signal in a wavelength multiplexed division scheme. Filtering may be performed on the second optical signal and the fourth optical signal related to the second optical signal.
In this case, another service provided through the FTTH network related to the second optical signal may be at least one of broadcasting, internet, and telephone service.
The second optical signal received by the first relay device may be received from an optical line termination (OLT) of the FTTH network.
The wavelength multiplexing division scheme used by the first relay apparatus and / or the second relay apparatus may be low density wavelength multiplexing division (CWDM).
According to another aspect of the present invention, there is provided an apparatus for providing a mobile communication relay service using an FTTH network. The mobile communication relay service device includes a first relay device and a second relay device.
According to an embodiment of the present invention, in a mobile communication relay service providing apparatus using a fiber-to-the-home (FTTH) network, the first optical signal from the base station of the mobile communication network and the second optical signal of the FTTH network A first relay device for transmitting the second optical signal using an optical communication line of the FTTH network in a wavelength division multiplexing (WDM) method; And separating the WDM optical signal from the first relay device and transmitting the first optical signal to a mobile communication remote optical unit (ROU) and the second optical signal to an optical network terminal (ONT) of the FTTH network. A mobile communication relay service device including a second relay device is provided.
The second relay apparatus transmits a third optical signal from the mobile communication ROU and a fourth optical signal from the ONT of the FTTH network by using a wavelength multiplexing division scheme using an optical communication line of the FTTH network, The first relay device may separate the WDM optical signal from the second relay device and transmit the third optical signal to a base station of the mobile communication network and the fourth optical signal to an OLT of the FTTH network.
The first optical signal received by the first relay device is generated by converting a radio frequency (RF) signal of the base station of the mobile communication network, and the third optical signal received by the second relay device is the mobile communication. The ROU may be generated by converting an RF signal received from the mobile communication terminal.
The first optical signal may be generated by a master hub unit (MHU) connected with the base station of the mobile communication network to convert a radio frequency (RF) signal of the base station of the mobile communication network.
The mobile communication ROU receiving the first optical signal may convert the first optical signal into an RF signal for a mobile communication service and output the converted RF signal.
The third optical signal received by the second relay device may be generated by the mobile communication mobile communication ROU by converting an RF signal from the mobile communication terminal.
The RF signal received by the MHU and converted into a first optical signal may be received through a master optical link unit (MOLU) and a slave optical link unit (SOLU).
The first optical signal received by the first relay device may be received from an optical line termination (OLT) of the FTTH network.
The first relay device may be included in the OLT.
The second optical signal and the fourth optical signal may include a broadcast signal, an internet signal, and a telephone signal provided through an FTTH network. In this case, the first relay device and the second relay device may transmit the broadcast signal. A broadcast band filter unit for filtering; An internet band filter unit for filtering the internet signal; And a telephone band filter unit for filtering the telephone signal.
The wavelength multiplexing division scheme used by the first relay apparatus and the second relay apparatus may be a low density wavelength multiplexing division scheme (CWDM).
The optical signal transmission between the first relay device and the second relay device may be performed through a splitter of the FTTH network. In this case, the first relay device may be included in the distributor.

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As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the drawings, similar reference numerals are used for similar elements. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same or corresponding components will be denoted by the same reference numerals regardless of the reference numerals and redundant description thereof will be omitted.

First, the configuration of the FTTH network in which the present invention can be used will be described with reference to FIG. 1.

1 is a diagram illustrating a configuration of an FTTH network in which the present invention can be used.

As shown in FIG. 1, the FTTH network in which the present invention can be used includes the broadcasting station 100 and the Internet 110 connecting the RN 150 to the ONT 160a, 160b, 160c. Connected.

The broadcast station 100 includes all broadcast stations that transmit broadcast signals such as terrestrial waves, satellites, and cables.

The Internet 110 includes various services that exist in the TCP / IP protocol and its upper layers, namely HyperText Transfer Protocol (HTTP), Telnet, File Transfer Protocol (FTP), Domain Name System (DNS), and Simple Mail Transfer Protocol (SMTP). It includes all the global open network architectures that provide Simple Network Management Protocol (SNMP), Network File Service (NFS), and more.

The telephone station 120 may include an optical line termination (OLT) 130 and an emergency management system (EMS) 140. The Internet 110 and the broadcasting station 100 may include the telephone station 120 through the OLT 130. It can be connected with.

The OLT 130 provides functions commonly required for the ONT 160 and the asynchronous transfer mode (ATM) layer function and subscriber access function for a communication service using the FTTH network (hereinafter referred to as an FTTH service). It is a device implemented as one.

Such an OLT 130 is generally installed inside a telephone station, and the OLT 130 that can be used in the present invention supports up to 16 ports and may be an OLT 130 that can accommodate up to 512 subscribers.

In the transmission line, the Internet line is 1490 nm, the cable TV is 1550 nm, the receiving line is 1310 nm as the Internet line, and the reception sensitivity may be -25 dBm.

The EMS 140 is a device for checking and managing the state of the optical cable in an emergency state such as a natural disaster, and performs a function of motoring and managing a function of the OLT 130.

RN (Remote Node) 150 is a splitter (splitter) is a device that separates the signal by frequency.

The RN 150 is generally configured by combining a low pass filter that passes low frequency components and a high pass filter that passes high frequency components.

Meanwhile, the RN 150 that may be used in the present invention may be configured in a tree shape, for example, 1: N for reducing the optical line, and the maximum loss may be 17 dB or less based on 1:32. .

The RN 150 may be installed in an underground manhole or a manual MDF (Main Distributing Frame) room or electric pole, and may have a waterproof structure.

The ONT 160 is a device for accessing the FTTH network and is located inside the subscriber's home or apartment house or building.

The ONT 160 that can be used in the present invention has an Internet line of 1490 nm for a transmission line, 1550 nm for a cable TV, 1310 nm for a receiving line, as in the OLT 130 described above, and a reception sensitivity of − It may be 25 dBm. It also supports 10/100 base 4 ports.

Meanwhile, the RN 150 and the ONT 160 installed outside the telephone station 120 may be provided differently depending on the subject or region receiving the FTTH service.

For example, in the case of a single-family home, ONT 160 will be installed in each individual home, but in the case of a shared house, for example, in the case of an apartment, an RN 150 is installed in each complex and each home from the RN 150. It may be connected to the ONT 160 installed in the FTTH service.

On the other hand, in the case of an office space or a commercial area other than a building, that is, a residential area, as in the case of a common house, an RN 150 is installed in one building and connected to each office from the RN 150 to each office. The ONT 160 may be installed in the FTTH service.

On the other hand, the FTTH service, as described above, can provide a fast and stable communication service compared to the conventional ASL (Asymmetric Digital Subscriber Line) by connecting the optical cable to the home or office, and also, satellite broadcasting, cable TV, etc. Broadcast and wireline telephony services.

However, such an FTTH service requires the installation of optical fibers to each home or building, and also requires a lot of costs, such as installing an ONU (Optical Network Unit or ONT: Optical Network Terminal) 160 separately.

The present invention proposes a method and apparatus that can be utilized as a relay network for a mobile communication service as well as using the high-cost FTTH network only for the conventional Internet, broadcasting, and landline telephone.

Hereinafter, a method and apparatus for enabling the FTTH network according to an exemplary embodiment of the present invention to be used as a relay network for a mobile communication service will be described with reference to the configuration of the FTTH network.

In order to use the FTTH network as a relay network for mobile communication service, first, the FTTH network and the mobile communication service are interconnected, and the signals from the mobile communication service are transferred to the houses, apartment houses, and buildings that are provided with the FTTH service. Should be printed.

Of course, since services such as the Internet or broadcast transmission using the conventional FTTH network must be provided as they are, it is required to be able to transmit mobile communication signals transmitted and received via a radio frequency through a wired optical cable.

In addition, it is also required to be able to provide differentiation from signals for services such as the Internet or broadcast transmission using a conventional FTTH network.

A configuration of a mobile communication relay service system using an FTTH network according to an exemplary embodiment of the present invention, which enables this, will be described with reference to FIGS. 2 and 3.

First, FIG. 2 is a diagram illustrating a configuration of a mobile communication relay service system using an FTTH network according to an embodiment of the present invention.

As shown in FIG. 2, the mobile communication relay service system using the FTTH network according to an exemplary embodiment of the present invention may be connected to the mobile station 200 as well as the broadcast station 100 and the Internet 110 as in the related art.

Hereinafter, a description of the same components as those described in FIG. 1 will be omitted.

In the case of mobile communication, as shown in FIG. 2, for example, in the case of the WCDMA method, the relay device 1 according to the present invention is connected to a Node-B 210, which is a base station of mobile communication, through a master hub unit (MHU) 220. 230 may be connected.

The MHU 220 converts an RF signal of a forward direction (the direction transmitted from the base station 210 to the ROU 250) received from the base station into an optical signal and transmits the converted RF signal to the relay device 1230.

In addition, the optical signal of the reverse direction (direction transmitted from the ROU 250 to the base station 210) received from the relay device 1 230 is converted into an RF signal and transmitted to the base station 210.

The relay device 1 230 is a wavelength division multiplexing (WDM) scheme in which an optical signal for an RF signal received from the MHU 220 and an optical signal for broadcast and the Internet received from the OLT 130 are different in wavelength. It performs the role of transmitting to.

In addition, the relay device 1 230 receives an optical signal for the RF signal and an optical signal for the Internet received from the ROU 250 and the ONT 160, respectively, and separates the optical signal so that the optical signal for the Internet is a telephone station. And the optical signal for the RF signal is transmitted (reversed) to the MHU 220 of the mobile communication.

The optical signal transmitted to the RN 150 through the relay device 1230 is transmitted to the relay device 2 240 through distribution in the RN 150.

The relay device 2 240 separates the optical signal for the received RF signal from the optical signal for broadcasting and the Internet received from the OLT 130 and transmits each optical signal to the ROU 250 and the ONT 160. .

In addition, the relay device 2 240 transmits (reverses) the optical signal for the RF signal received from the ROU 250 and the optical signal for the Internet received from the ONT 160 at one time with different wavelengths. do.

The remote optical unit (ROU) 250 is located in a home, an apartment house, a building, and the like provided with FTTH service, and converts an optical signal for an RF signal received from the relay device 2 240 into an RF signal, and amplifies and outputs the RF signal. do.

In addition, the ROU 250 converts the RF signal received from the mobile station, that is, the mobile communication terminal, into an optical signal, and transmits the converted RF signal to the relay device 2240.

By placing the ROU 250 in a home, a shared house, a building, etc., which are provided with FTTH service, the ROU 250 transmits an RF signal, that is, a mobile communication signal, received from the base station 210 to the vicinity where the ROU 250 is located, and the ROU 250. Receives an RF signal from the surrounding is located and serves to transmit to the base station 210.

In FIG. 2, although the relay device 1 230 and the relay device 2 240 are configured as separate devices, the relay device 1 230 may be included in the RN 150, or the relay device 2 ( In the case of 240, it is obvious that it may be included in the ONT 160.

Meanwhile, although FIG. 2 illustrates that the relay device 230 is configured separately from the telephone station 120, the relay device 230 is located in the telephone station 120 to provide a relay service for mobile communication. It is also possible.

In particular, when the subject providing the mobile communication service and the subject providing the FTTH service are different, it may be more preferable to provide the communication relay service according to the present invention through the telephone station 120 which provides the FTTH service.

For example, when one company providing FTTH service provides mobile communication relay service of a plurality of mobile communication companies, it is desirable to provide a mobile communication relay service according to the present invention through a telephone station that will provide FTTH service. .

Hereinafter, the configuration of a mobile communication relay service system using an FTTH network according to the present invention will be described.

3 is a diagram illustrating a configuration of a mobile communication relay service system using an FTTH network according to another exemplary embodiment of the present invention.

In comparison with FIG. 2, when a mobile communication relay service using an FTTH network is provided through the telephone station 120, the base station 210 is connected to the MOLU 300, and the MOLU 300 is an SOLU installed in the telephone station 120. The device may be connected to the relay device 1 230 through a slave optical link unit 310 and a master hub unit MUH 320.

The master optical link unit (MOLU) 300 may be located in the base station 210 or separately from the base station 210. The MOLU 300 converts a radio signal, that is, an RF (Radio Frequency) signal, into an optical signal from the base station 210 and converts it into an optical signal. 310, and converts the optical signal received from the SOLU 310 into an RF signal and transmits the RF signal to the base station 210.

The slave optical link unit (SOLU) 310 may be located in a telephone station, and converts an optical signal transmitted through the MOLU 300 into an RF signal and converts it into an optical signal.

The optical signal converted by the SOLU 310 is transmitted together with the broadcast and internet signals received by the OLT 130 in the wavelength multiplexing division scheme in the relay device 1230 according to the present invention.

In addition, the SOLU 310 receives an optical signal for the RF signal received from the relay device 1230, converts the optical signal into an RF signal, converts the optical signal into an optical signal, and transmits the optical signal to the MOLU 300.

Unlike FIG. 2, the installation of separate SOLU 310 and MHU 320 in the telephone station in FIG. 3 is particularly difficult when one telephone station 120 provides a mobile communication relay service of a plurality of mobile operators as described above. Each RF signal received from the mobile communication is intended to be capable of receiving and processing the converted optical signal.

Therefore, if one telephone station 120 provides a communication relay service for one mobile communication service, the MHU 220 and the relay device 1 230 illustrated in FIG. 2 are installed in the telephone station 120. It is apparent that the communication relay service using the FTTH network according to the present invention is possible.

On the other hand, if the relay device 1 230 according to the present invention is located in the telephone station 120, it is apparent that the relay device 1 230 may be included in the OLT 130 may be implemented as a single device.

Hereinafter, the RF signal converted into an optical signal from the base station 210 of the mobile communication and the optical signal of the Internet, broadcast and telephone can be received and transmitted in the forward direction, and also the RF received by the ROU 250 and converted into an optical signal The configuration of the relay apparatus 230 or 240 according to the present invention for transmitting signals and internet, broadcast and telephone signals in the reverse direction will be described.

4 is a diagram illustrating a configuration of a relay device 230 or 240 for providing a communication relay service using an FTTH network according to an embodiment of the present invention.

In FIG. 2 and FIG. 3, although the relay device 230 or 240 is divided into the relay device 1 230 and the relay device 2 240 according to the position of the relay device 230 or 240 according to the present invention, the RF signal and broadcast converted into optical signals are broadcast. Since the functions of receiving and transmitting optical signals of the Internet and the telephone are common, it is possible to make the configurations of the relay device 1 230 and the relay device 2 240 shown in FIGS. 2 and 3 the same. .

Therefore, hereinafter, the configuration of the relay apparatus 230 or 240 according to the present invention will be described with reference to FIG. 4, and the functions performed according to the position of the relay apparatus 230 or 240 will be described separately. .

As shown in FIG. 4, the relay device 230 or 240 according to the present invention includes a broadcast band filter unit 400, an Internet band filter unit 410, a mobile communication band filter unit 420, and a wavelength division multiplexing unit ( 430).

The broadcast band filter unit 400, the internet band filter unit 410, and the mobile communication band filter unit 430 perform filtering to receive only an optical signal for a broadcast signal, an internet signal, and a mobile communication signal.

The filter unit 400, 410, 420 for each of these signals may receive only each optical signal including at least one filter according to the type of the signal.

The wavelength division multiplexing unit 430 transmits each optical signal for broadcast, internet, and mobile communication signals by varying the wavelength of light to one optical fiber using a Wavelength Division Multiplexing (WDM) scheme.

WDM is a transmission method that bundles several channels with different wavelengths of light and transmits them through a single optical fiber, and improves communication capacity and speed transmitted through optical cables. It is possible to transmit the optical signal indicating the.

The wave division multiplexing method of the wave division multiplexing unit 430 may be a low density wavelength division multiplexing (CWDM) method.

Although not shown in FIG. 4, in the case of providing another communication service through the FTTH network, for example, in the case of providing a wireline telephone service, the relay device according to the present invention includes a filter unit for filtering an optical signal for a wireline telephone signal. It may further include.

It is apparent that the wavelength division multiplexer 430 may transmit the optical signal by changing the wavelength of light even with respect to the optical signal for the wireline telephone signal.

Hereinafter, the order in which the method for providing a communication relay service using the FTTH network according to the present invention will be described with reference to FIGS. 5 and 6.

FIG. 5 is a flowchart illustrating an order in which an RF signal received by the base station 210 of the mobile communication service is transmitted to the ROU 250 using the FTTH network according to an exemplary embodiment of the present invention.

As shown in FIG. 5, in order for the RF signal received by the base station 210 to be transmitted to the ROU 250 using the FTTH network according to the present invention, the RF signal received by the base station 210 is first converted into an optical signal. It is converted and received by the relay apparatus 1 230, which may be installed in the telephone station 120 or outside the telephone station 120 (S500).

The optical signal for the received RF signal and the optical signal for the broadcast and Internet signals are transmitted by using a wavelength division multiplexing scheme in which the wavelengths are transmitted at different wavelengths (S502).

Meanwhile, the relay device 2 240 located at the subscriber side of the FTTH service filters the received optical signal and separates the received optical signal into optical signals for RF signals, broadcast signals, and internet signals (S504).

The optical signal for the RF signal of the separated optical signal is transmitted to the ROU 250, and the optical signal for broadcasting and the Internet is transmitted to the ONT 160 (S506).

Meanwhile, the ROU 250 converts the optical signal for the received RF signal into an RF signal, and amplifies and outputs the RF signal received by the base station 210 to the vicinity where the ROU 250 is located. .

FIG. 6 is a flowchart illustrating an order in which an RF signal received by the ROU 250 is transmitted to the base station 210 of the mobile communication service using the FTTH network according to an exemplary embodiment of the present invention.

As shown in FIG. 6, in order for the RF signal received by the ROU 250 according to the present invention to be transmitted to the base station 210 using the FTTH network, the RF signal received by the ROU 250 is first converted into an optical signal. The conversion is received by the relay device 2 (240) (S600).

The optical signal for the received RF signal and the optical signal for the Internet signal are transmitted in a wavelength division multiplexing scheme in which wavelengths are transmitted at different wavelengths (S602).

Meanwhile, the relay device 1 230, which may be located in the telephone station 120 or separately from the telephone station 120, filters the received optical signal and separates the received optical signal into optical signals for RF and Internet signals (S604).

The optical signal for the RF signal among the separated optical signals is transmitted to the base station 210, and the optical signal for the Internet is transmitted to the OLT 130 (S606).

Meanwhile, the base station 210 converts the optical signal for the received RF signal into an RF signal, and amplifies and outputs the RF signal received by the ROU 250 to the vicinity where the base station 210 is located. .

Meanwhile, in FIG. 6, since one-way broadcasting is generally used, it is assumed that there is no broadcast signal received and transmitted from the user. However, in the case of bidirectional broadcasting, there may be a broadcast signal received and transmitted from the user.

On the other hand, in the case of providing a communication relay service using the FTTH network should not affect the Internet, telephone, broadcast services and the like provided through the conventional optical cable.

This is because, despite the high cost of the Internet, telephone, and broadcast services using the FTTH network, there was an advantage of providing a fast and stable communication service.

Hereinafter, the communication relay service using the FTTH network according to the present invention will be described through an example of providing a relay service of mobile communication using an actual FTTH network.

[Table 1] is a link budget in a passive optical communication network (E-PON: Ethernet-Passive Optical Network) system provided using a conventional FTTH network.

TABLE 1

Conventional E-PON Link Budget Remarks OLT output level 0 Light Path Loss (at 15km) 6 1490nm Loss: 0.4dB / Km standard Optical splitter loss (at 1:32) 17 Light path loss (based on 5km) 2 1490nm Loss: 0.4dB / Km standard Other loss One Connector and connection loss ONU / ONT input -26 1.25G receive sensitivity standard

When providing a communication relay service according to the present invention for the WCDMA mobile communication in addition to the conventional passive optical communication network looks at the link budget based on the passive optical communication network system [Table 2].

TABLE 2

Conventional E-PON + WCDMA Link Budget (Based on E-PON) Remarks OLT output level 0 CWDM filter One Light Path Loss (Based on 10km) 4 1490nm Loss: 0.4dB / Km standard Optical splitter loss (at 1:32) 17 Light path loss (based on 5km) 2 1490nm Loss: 0.4dB / Km standard CWDM filter One Other loss One Connector and connection loss ONU / ONT input -26 1.25G receive sensitivity standard

As shown in Table 2, in the case of providing a communication relay service according to the present invention for WCDMA mobile communication in addition to the conventional passive optical communication network, the link budget based on the passive optical communication network system is hardly changed.

However, although the transmission distance in the specification of the conventional passive optical communication network is somewhat reduced, considering that the transmission distance is within 5 km in the situation where the actual passive optical communication network is provided, the conventional broadcasting, Internet, etc. services through the conventional passive optical communication network It can be seen that there is no effect on the provision.

As described above, by adding the relay device and the ROU according to the present invention to the already configured FTTH network, it is possible to provide a relay service of the RF signal of the mobile communication using the optical cable of the FTTH network.

In addition, despite the addition of such a device and the addition of the optical signal for the RF signal has little effect on the provision of services such as broadcasting, the Internet through the conventional KTTH network.

Therefore, by using the FTTH network constructed at high cost, it is possible to increase the utilization of the FTTH network and provide additional communication services.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

As described above, the method and apparatus for providing a communication relay service using the FTTH network according to the present invention has an advantage of being able to be used not only for wired communication services but also for wireless communication services using an already established FTTH network.

In addition, by using the already established FTTH network there is an advantage that can increase the utilization of the FTTH network and reduce the cost for providing wired / wireless communication services.

Claims (23)

In the mobile communication relay service providing method using a FTTH (Fiber-To-The-Home) network, (A) receiving, by a first relay device, a first optical signal from a base station of a mobile communication network and a second optical signal of the FTTH network; (B) transmitting, by the first relay device, the first optical signal and the second optical signal by using a wavelength division multiplexing (WDM) method using an optical communication line of the FTTH network; A second relay device separates the WDM system optical signal from the first relay device so that the first optical signal is a mobile communication remote optical unit (ROU), and the second optical signal is an ONT (Optical Network) of the FTTH network. Terminal), transmitting (c); (D) receiving, by the second relay device, a third optical signal from the mobile communication ROU and a fourth optical signal from the ONT of the FTTH network; (E) transmitting, by the second relay device, the third optical signal and the fourth optical signal using an optical communication line of the FTTH network in a wavelength multiplexed division scheme; And The first relay device separating the WDM scheme optical signal from the second relay device and transmitting the third optical signal to a base station of the mobile communication network and the fourth optical signal to an OLT of the FTTH network (f) ), The first optical signal received by the first relay device is generated by converting a radio frequency (RF) signal of the base station of the mobile communication network, and the third optical signal received by the second relay device is the mobile communication. The ROU is generated by converting the RF signal received from the mobile communication terminal Method of providing mobile communication relay service. delete The method of claim 1, The first optical signal received by the first relay device in step (a) is generated by the MHU (Master Hub Unit) connected to the base station of the mobile communication network converts the RF signal from the mobile communication network base station Method of providing mobile communication relay service. The method of claim 1, The mobile communication ROU receiving the first optical signal converts the first optical signal into an RF signal for a mobile communication service and outputs the converted RF signal. Method of providing mobile communication relay service. The method of claim 1, The third optical signal received by the second relay device is characterized in that the mobile communication ROU is generated by converting the RF signal from the mobile communication terminal Method of providing mobile communication relay service. The method of claim 1, The third optical signal is converted into an RF signal for mobile communication in the MHU (Master Hub Unit) connected to the base station of the mobile communication network Method of providing mobile communication relay service. The method of claim 1, At least one of the first relay device and the second relay device Prior to transmitting the optical signal in a wavelength multiplexed division scheme, the first optical signal and the third optical signal related to the RF signal may be connected to the second optical signal and the fourth optical signal related to another service provided through the FTTH network. Characterized in that to perform filtering on the signal Method of providing mobile communication relay service. The method of claim 7, wherein The other service provided through the FTTH network related to the second optical signal may be at least one of a broadcast, internet, and telephone service. Method of providing mobile communication relay service. The method of claim 1, The second optical signal received by the first relay device The mobile communication relay service providing method, characterized in that received from the optical line termination (OLT) of the FTTH network. The method of claim 1, The wavelength multiplexing division scheme is a low density coarse wavelength division multiplexing (CWDM) method for providing a mobile communication relay service. In the mobile communication relay service providing apparatus using a fiber-to-the-home (FTTH) network, Transmitting the first optical signal from a base station of a mobile communication network and the second optical signal of the FTTH network by using an optical communication line of the FTTH network in a wavelength division multiplexing (WDM) method A first relay device; And  The first optical signal is transmitted to a mobile communication remote optical unit (ROU), and the second optical signal is transmitted to an optical network terminal (ONT) of the FTTH network by separating the WDM optical signal from the first relay device. Including a second relay device, The second relay apparatus transmits a third optical signal from the mobile communication ROU and a fourth optical signal from the ONT of the FTTH network by using a wavelength multiplexing division scheme using an optical communication line of the FTTH network, The first relay device separates the WDM optical signal from the second relay device, and transmits the third optical signal to a base station of the mobile communication network, and the fourth optical signal to an OLT of the FTTH network. The first optical signal received by the first relay device is generated by converting a radio frequency (RF) signal of the base station of the mobile communication network, and the third optical signal received by the second relay device is the mobile communication. The ROU is generated by converting the RF signal received from the mobile communication terminal Mobile communication relay service providing apparatus. The method of claim 11, The first optical signal is generated by a master hub unit (MHU) connected with the base station of the mobile communication network to convert a radio frequency (RF) signal of the base station of the mobile communication network. Mobile communication relay service providing apparatus. The method of claim 11, The mobile communication ROU receiving the first optical signal converts the first optical signal into an RF signal for a mobile communication service and outputs the converted RF signal. Mobile communication relay service providing apparatus. The method of claim 11, The third optical signal received by the second relay device is characterized in that the mobile communication mobile communication ROU is generated by converting the RF signal from the mobile communication terminal Mobile communication relay service providing apparatus. The method of claim 12, The RF signal received at the MHU and converted into a first optical signal is received through a master optical link unit (MOLU) and a slave optical link unit (SOLU). Mobile communication relay service providing apparatus. The method of claim 11, A first optical signal received by the first relay device is received from an optical line termination (OLT) of the FTTH network Mobile communication relay service providing apparatus. The method of claim 11, And the first relay device is included in the OLT. The method of claim 11, The second optical signal and the fourth optical signal include a broadcast signal, an internet signal, and a telephone signal provided through an FTTH network; The first relay device and the second relay device, A broadcast band filter unit filtering the broadcast signal; An internet band filter unit for filtering the internet signal; And And at least one of telephone band filter units for filtering the telephone signals. Mobile communication relay service providing apparatus. The method of claim 11, The wavelength multiplexing division scheme may be a low density wavelength multiplexing division scheme (CWDM). Mobile communication relay service providing apparatus. The method of claim 11, Optical signal transmission between the first relay device and the second relay device is performed through a splitter of the FTTH network. Mobile communication relay service providing apparatus. The method of claim 20, The first relay device is characterized in that included in the distributor is configured Mobile communication relay service providing apparatus. delete delete

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