KR20170035601A - A Method of Setting Downlink in FreeZone Coverage - Google Patents

Abstract

A method for establishing a downlink in a free coverage by a first base station, the method comprising: receiving identification information about free coverage detected by a user terminal; When the signal measurement value included in the received identification information is equal to or greater than the reference value, the first frequency band provided by the first base station is PCell and the second frequency band of the free coverage is SCell. ) Setting an environment; And determining a downlink resource allocation for a user terminal under a CA environment, wherein the free coverage is a multiplex communication that multiplexes the first communication signal received from the optical line terminal and the second communication signal received from the second base station A home gateway for receiving a multiplexed communication signal from a master gateway for generating a signal demultiplexes a multiplexed communication signal into a first communication signal and a second communication signal and provides a second communication signal in a second frequency band A method for establishing a downlink in freezone coverage according to an embodiment of the present invention is disclosed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of setting up a downlink in a free-

The apparatus for providing free coverage and the method for establishing a downlink in free coverage according to an exemplary embodiment of the present invention may include providing a freezone to a user terminal using a master gateway and a home gateway that provide a wireless communication network and a wired communication network integrally, And more particularly to a method for establishing a user terminal downlink in an integrated network environment through an apparatus for providing a freezone to a user terminal by integrating a wired / wireless communication network.

In LTE communication, Carrier Aggregation (CA) technology is a breakthrough in increasing communication speed and is still being developed in many fields to provide a faster and more efficient communication network.

However, even if a communication network is provided through the CA technology, a dark area occurs in a room due to a local or structural problem, so that a signal in a specific frequency band is not reached, There were many areas.

In order to overcome this problem, a plurality of Femto AP (Access Point) devices are installed. However, when the femto AP equipment is expensive, and the femto-macro (outdoor network), femto-femto There is a problem that performance deterioration occurs due to a problem.

In addition, the communication through the LTE communication network is faster than the existing communication network, but it has an economical burden to the users. To overcome this problem, there is a need for an economical communication network through the LTE communication network .

Therefore, a more economical network device is required, which can solve the dark area, and an economical communication method is also required in the communication method through the device.

An apparatus for providing free coverage and a method for establishing a downlink in free coverage according to an embodiment of the present invention aims at minimizing a network establishment investment cost of a service provider by disclosing an apparatus for providing a wired / .

Also, an apparatus for providing a free coverage according to an exemplary embodiment of the present invention, and a method for establishing a downlink in a free coverage area, may include a wired / wireless communication network integration apparatus using a pre-established passive optical network (PON) Thereby minimizing the social cost of establishing the communication network and maximizing the convenience.

Also, an apparatus for providing a free coverage according to an exemplary embodiment of the present invention, and a method for establishing a downlink in a free coverage area, are provided for establishing a downlink according to a selection of a user to achieve faster and more economical communication do.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

A method for downlink setting in a freezone coverage environment according to an embodiment of the present invention includes:

A method for establishing a downlink in a free coverage by a first base station, the method comprising: receiving identification information on the free coverage detected by a user terminal; Wherein when the signal measurement value included in the received identification information is equal to or greater than a reference value, the first frequency band provided by the first base station is PCell and the second frequency band of the free coverage is SCell, Setting a CA (Carrier Aggregation) environment; And determining a downlink resource allocation for the user terminal under the CA environment, wherein the free coverage includes multiplexing a first communication signal received from the optical line terminal and a second communication signal received from the second base station, A home gateway for receiving the multiplexed communication signal from a master gateway for generating a multiplexed communication signal demultiplexes the multiplexed communication signal into a first communication signal and a second communication signal, In the second frequency band.

The determining may comprise using both the PCell of the first frequency band and the SCell of the second frequency band as the downlink.

The determining may comprise using only the SCell of the second frequency band as the downlink.

The downlink setting method in the free coverage may further include using only the PCell of the first frequency band as an uplink of the user terminal in the CA environment.

The master gateway is wired to a radio unit (RU) of the second base station and can transmit and receive the second communication signal.

Wherein the master gateway converts the second communication signal received from the radio unit to an intermediate frequency band, digitally converts the second communication signal of the intermediate frequency band that has been converted, It can be multiplexed with the first communication signal.

The master gateway may be wired to a digital unit (DU) of the second base station to transmit and receive the second communication signal.

The home gateway may convert the separated second communication signal into an Ethernet signal and a Wi-Fi signal, and transmit the Ethernet signal and the Wi-Fi signal to a wired terminal or a wireless terminal.

The home gateway may multiplex the Ethernet signal and the Wi-Fi signal transmitted by the wired terminal and the wireless terminal, and may transmit the multiplexed Ethernet signal and the Wi-Fi signal to the optical line terminal through the master gateway.

The home gateway may process only downlink traffic to the user terminal in communication with the user terminal.

The master gateway and the home gateway may be connected through a wired optical cable.

The apparatus for providing free coverage according to an exemplary embodiment of the present invention and the downlink setting method for free coverage can minimize an investment cost of establishing a communication network of a service provider by disclosing an apparatus for providing a wired / wireless communication network integrally.

Also, an apparatus for providing a free coverage according to an exemplary embodiment of the present invention, and a method for establishing a downlink in a free coverage area, may include a wired / wireless communication network integration apparatus using a pre-established passive optical network (PON) Thereby minimizing the social cost of establishing the communication network and maximizing the convenience.

Also, an apparatus for providing free coverage according to an embodiment of the present invention, and a downlink setting method in free coverage, can realize faster and more economical communication by setting a downlink according to a user's selection.

The technical effects achieved through the present invention are not limited to the technical effects mentioned above, and other technical effects not mentioned can be understood from the following description to be clearly understood by those skilled in the art It will be possible.

1 is a schematic view illustrating a system for providing a free coverage using a master gateway and a home gateway according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating a method of setting up a user terminal CA and a downlink in a freezone coverage environment according to an embodiment of the present invention.
3 is a flowchart illustrating a method of setting up a user terminal CA and a downlink in a free-coverage environment according to another embodiment of the present invention.
4 is a block diagram illustrating a configuration of a master gateway and a peripheral connection according to an embodiment of the present invention.
5 is a flowchart showing an operation method of the master gateway of FIG.
6 is a block diagram illustrating a configuration of a master gateway and a peripheral connection according to another embodiment of the present invention.
7 is a flowchart showing an operation method of the master gateway of FIG.
8 is a block diagram illustrating a configuration of a home gateway and a peripheral connection according to an embodiment of the present invention.
9 is a flowchart showing an operation method of the home gateway of FIG.
10 is a schematic view of a system for providing a free coverage according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

First, the terminology used in the present application is used only to describe a specific embodiment, and is not intended to limit the present invention, and the singular expressions may include plural expressions unless the context clearly indicates otherwise. Also, in this application, the terms "comprise", "having", and the like are intended to specify that there are stated features, integers, steps, operations, elements, parts or combinations thereof, But do not preclude the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof.

Also, the term " part " used in the present invention means a hardware component such as software, FPGA or ASIC, and 'part' performs certain roles. However, 'minus' is not limited to software or hardware. The " part " may be configured to be in an addressable storage medium and configured to play back one or more processors. Thus, by way of example, and by no means, the terms " component " or " component " means any combination of components, such as software components, object- oriented software components, class components and task components, Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables. The functions provided in the components and parts may be combined into a smaller number of components and parts or further separated into additional components and parts.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

A downlink setting method in a freezone coverage environment according to an exemplary embodiment of the present invention includes setting up a user terminal downlink in a system for providing a wired / wireless integrated environment indoors using a passive optical network (PON) By starting the method, more economical and high-speed data communication can be made possible. In addition, the communication company can provide the convenience of setting the CA environment of the user terminal (as a kind of femtocell) by providing the communication signal of the specific frequency band which can be used for setting the CA environment of the user terminal through the wired / And it is possible to provide the user with the benefit of the user by providing the specific frequency band to the user free of charge or at a low price. Hereinafter, a downlink setting method in a freezone coverage environment according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 is a schematic view illustrating a system for providing a free coverage using a master gateway and a home gateway according to an embodiment of the present invention. As shown in the figure, the free-coverage providing system may be implemented through the master gateway 100 and the home gateway 200.

The master gateway 100 is connected to an optical line terminal (OLT) 400 and a base station 300 to transmit a first communication signal from the optical line terminal 300 to a freezone And can transmit and receive a second communication signal that provides coverage. The optical line terminal 400 includes a terminal for providing a wired optical communication service. The base station 300 includes a radio unit (RU / RIU) 310 and a digital unit , DU) < / RTI >

The radio unit 310 is a radio signal processing device installed in a service area, i.e., a cell, and processes a radio signal. The radio unit 310 processes a digital signal received from the digital unit 320 according to a radio frequency (RF) ) Signal, amplify it, and provide it to the user.

The digital unit 320 is a digital signal processing device that performs processing related to encryption and decryption of a wireless digital signal. The digital unit 320 may be installed in a service area, but may be a C / RAN (Centralized / Cloud RAN) And may be installed concentrically to the telecommunication service company.

The digital unit (DU) 320 may process the second communication signal providing free coverage and may transmit the second communication signal to the master gateway 100 connected via a wired optical cable.

Meanwhile, the digital unit (DU) 320 is not limited to providing a freezone, and may also process communication signals of other frequency bands that provide macrocell services.

The master gateway 100 is connected to the optical line terminal 400 and the digital unit 320 and receives a first communication signal from the optical line terminal 400 and a second communication signal from the optical line terminal 400. In other words, And receive the second communication signal from the digital unit 320.

The master gateway 100 may generate a multiplex communication signal by multiplexing the received first communication signal and the second communication signal and may transmit the generated multiplex communication signal to one or more home gateways 200 .

The transmission of the multiplexed communication signal to the home gateway 200 of the master gateway 100 may be performed by an optical splitter 600 through a wired optical cable connection. That is, the optical splitter 600 may divide the multiplexed communication signal received from the master gateway 100 into one or more and transmit the separated multiplexed communication signals to the respective home gateways 200.

The home gateway 200 demultiplexes the received multiplexed communication signal into a first communication signal and a second communication signal. The home gateway 200 separates the multiplexed communication signal into a first communication signal and a second communication signal, To provide free coverage of the second frequency band.

That is, the home gateway 200 may form a predetermined network service coverage 800 and a femtocell based on the second communication signal included in the received multiplexed communication signal.

Based on the first communication signal included in the multiplexed communication signal transmitted from the home gateway 200, the home gateway 200 may transmit to the wired terminal 900 and the wireless terminal 1000, which are general network service terminals, Service can be provided.

Meanwhile, the user terminal 1100 may be registered in the free coverage service through the home gateway 200 before using the free coverage service. The registration may be made when the user terminal 1100 enters free coverage, or may be through the home gateway 200.

That is, the system for providing free coverage through the master gateway 100 and the home gateway 200 according to an exemplary embodiment of the present invention can provide a free zone communication signal (hereinafter, referred to as " free zone communication signal ") to a passive optical network The user terminal 1100 can provide free coverage by overlaying the second communication signal.

Accordingly, the user terminal 1100 can receive a high-quality LTE service through an inter-site carrier aggregation (CA) setting based on the free coverage. Also, under the CA setting, the user terminal 1100 receives CAPEX (Capital expenditures) by transmitting downlink traffic through the home gateway 200 and transmitting uplink traffic such as a control signal through a macro cell Can be minimized. That is, when the user terminal 1100 registered in the home gateway 200 enters the free coverage area, the downlink data can be received in an inexpensive and reliable communication environment compared to the existing macro cell.

Meanwhile, the passive optical network (PON) is one of optical subscriber establishing methods for providing broadband service based on optical cable to an enterprise or a general household, and is connected to an optical network terminal (ONT) using an optical cable with a splitter And the home gateway 200 may be installed in the aggregation building 700 or the like to form the network service coverage in a predetermined space.

The first communication signal of the optical line terminal 400 and the second communication signal of the digital unit 320 are connected to the fixed coverage 800 through the master gateway 100 and the home gateway 200 in a wired / When there is another digital unit (not shown) for providing a wireless communication service to the fixed coverage 800, the frequency band provided by the digital unit 320 and the frequency band provided by the other digital unit Can be performed.

In this regard, a more specific CA setup and downlink determination method within the free coverage of the user terminal 1100 will be described with reference to FIGS. 2 to 3. FIG.

FIG. 2 is a flowchart illustrating a method of setting up a user terminal CA and a downlink in a freezone coverage environment according to an embodiment of the present invention.

In step S201, the first base station can receive the free coverage identification information detected by the user terminal. More specifically, when the user terminal enters the free-coverage area, the user terminal can transmit the identification information on the frequency band, the signal size measurement value, and the like, which provide the free coverage, to the first base station. The first base station can recognize whether or not the user terminal enters the free coverage based on the transmitted identification information.

Meanwhile, the first base station includes a base station that is communicating with the user terminal at the time of entering the free coverage. The first base station may be the same as the second base station providing the free coverage, but may be a different base station. That is, the second base station may vary according to the determination of the individual frequency bands provided by the communication companies through the respective base stations. The second base station may correspond to the base station 300 of FIG.

When the first BS and the second BS are different, a delay may occur in communication between the BSs. Therefore, when the first BS and the second BS are the same BS, the free coverage is optimized for the user Can be provided.

In step S202, the first base station can determine whether the signal size measurement value for the free coverage based on the identification information is equal to or greater than the reference value. Specifically, based on the received identification information, the first base station performs communication through free coverage only when the free-coverage signal size measurement value is larger than the reference value by comparing with the reference value, thereby providing a more efficient communication environment .

In step S203, the first BS transmits to the user terminal a CA (Carrier Aggregation) message in which the cell of the first frequency band provided by the first base station is PCell and the cell of the second frequency band that provides the free coverage is SCell, (For convenience of description, the frequency band providing the macro cell through the first base station is referred to as a first frequency band, and the frequency band providing the free coverage is referred to as a second frequency band.) . That is, when the measured value in step S202 is equal to or greater than the reference value, by setting the CA environment of the user terminal 1100 using the free coverage, the user can be compared with the LTE-A communication service or the like using the frequency band generally provided by the communication company , A more economical and reliable wireless network environment can be used.

In step S204, the first base station can determine a downlink resource allocation for the user terminal under the CA environment. More specifically, the user terminal can previously set up a downlink method in a CA environment using free coverage. Based on the setting, the first base station allocates a downlink resource to the user terminal 1100 You can decide. This will be described in more detail in FIG. 3 below.

3 is a flowchart illustrating a method of setting up a user terminal CA and a downlink in a free-coverage environment according to another embodiment of the present invention.

In step S301, the first base station may receive the free coverage identification information detected by the user terminal. More specifically, when the user terminal enters free coverage, the user terminal transmits identification information on a frequency band and a signal size measurement value providing the free coverage to the first base station, The base station can recognize whether or not the user terminal enters the free coverage state.

Meanwhile, the first base station may include a base station to which the user terminal is communicating. Hereinafter, the same or similar items as those described above will be omitted or simplified.

In step S302, the first base station can determine whether the signal size measurement value of the free coverage is equal to or greater than the reference value based on the identification information.

In step S303, the first BS transmits to the user terminal a CA (Carrier Aggregation) message in which the cell of the first frequency band provided by the first base station is PCell and the cell of the second frequency band that provides the free coverage is SCell, Can be set.

In step S304, the first base station can determine whether or not a PCELL downlink setting of the user terminal is established. More specifically, the UE determines the downlink resource allocation to the user terminal in step S305 or S306 by checking the downlink setting method in the freezone environment of the UE.

In step S305, the first base station can perform downlink resource allocation using both PCell and SCell for the user terminal. That is, when the user sets both the PCell and the SCell to use for the faster data transmission with respect to the user terminal downlink resource allocation under the freezone environment, the downlink data using both the PCell and SCell is set Lt; / RTI >

In step S306, the first base station can perform downlink resource allocation using only SCell for the user terminal. That is, when the user sets SCELL only for more economical data transmission with respect to the user terminal downlink resource allocation under the freezone environment, the downlink data can be transmitted using only the SCell.

Accordingly, the user can select a downlink data transmission method that is more suitable for him / herself, as needed, and thereby provide a more economical and efficient wireless communication network service.

Hereinafter, a method of providing a freezone according to an embodiment of the present invention will be described with reference to the configuration and operation method of the master gateway 100 and the home gateway 200 providing the freezone. First, the configuration and operation method of the master gateway 100 will be described with reference to FIG. 4 to FIG.

FIG. 4 is a block diagram illustrating a configuration of a master gateway 100 and a peripheral connection according to an embodiment of the present invention. FIG. 5 is a flowchart illustrating an operation method of the master gateway 100 of FIG. And FIG. 5 corresponds to an embodiment in which communication signals of free-coverage are received from the digital unit (DU) 320 of the base station.

4, the master gateway 100 may include a first communication unit 101, a second communication unit 102, a third communication unit 109, a multiplexing and demultiplexing unit 107, and the like.

The first communication unit 101 can transmit / receive a first communication signal to / from the optical line terminal 400.

The second communication unit 102 can transmit / receive a second communication signal to / from the base station 300. The second communication signal may be provided to the user terminal 1100 through the home gateway 200 as a communication signal providing free coverage. This will be described in detail below with respect to the home gateway 200.

The base station 300 may include a wireless unit 310 and a digital unit 320. The master gateway 100 may be connected to the digital unit 320 of the base station 300, The connection may be via the optical cable.

The third communication unit 109 can perform communication with the home gateway 200. More specifically, the multiplexer / demultiplexer 107 may combine the first communication signal and the second communication signal to generate a multiplex communication signal, and the third communication unit 109 generates And transmits the multiplexed communication signal to the home gateway 200.

Meanwhile, the multiplexing and demultiplexing unit 107 may demultiplex the multiplexed communication signals transmitted from the home gateway 200.

The master gateway 100 may further include an optical amplification unit 108. The optical amplification unit 108 amplifies the multiplexed communication signal and transmits the amplified multiplexed communication signal to the third communication unit 109, Can be implemented.

An operation method of the master gateway 100 will be briefly described with reference to FIG.

The master gateway 100 receives the first communication signal from the optical line terminal 400 in step S501 and receives the second communication signal from the digital unit DU 320 in step S502.

The master gateway 100 generates a multiplex communication signal by muxing the first communication signal and the second communication signal on the basis of the received first and second communication signals in step S503, And transmits the signal to the home gateway 200 (S504).

6 is a block diagram illustrating a configuration of a master gateway 100 and a peripheral connection according to another embodiment of the present invention. FIG. 7 is a flowchart illustrating an operation method of the master gateway 100 of FIG. 6, And FIG. 7 correspond to an embodiment in which the master gateway 100 is connected to a second wireless unit (RU / RIU) 330 of the base station 300 to transmit and receive the second communication signal. Generally, since the first wireless unit 310 and the digital unit 320 are one set and manufactured by the same manufacturer, the optical communication interface between the first wireless unit 310 and the digital unit 320 It is common that it is not disclosed. Accordingly, the master gateway 100 can process the second communication signal through communication with the second wireless unit 330, which is connected to and compatible with the digital unit 320. Meanwhile, the second wireless unit 330 and the master gateway 100 may be connected by a wired connection, and the wired connection may be by an RF (Radio Frequency) cable.

6, the master gateway 100 includes a first communication unit 101, a second communication unit 102, a radio frequency processing unit 103, a digital processing unit 104, a multiplexing and demultiplexing unit 107, An optical amplifying unit 108, a third communication unit 109, and the like.

The functions of the first communication unit 101, the second communication unit 102, the third communication unit 109, and the multiplexing / demultiplexing unit 107 have been described above, and therefore their description is omitted.

The RF processor 103 may convert the second communication signal received through the second communication unit 102 into an intermediate frequency (IF) signal and transmit the IF signal to the digital processor 104.

The digital processing unit 104 may analog / digital convert an intermediate frequency (IF) signal received from the RF processing unit 103 and transmit the analog IF signal to the multiplexing and demultiplexing unit 107.

The multiplexing and demultiplexing unit 107 multiplexes the first communication signal received from the optical line terminal 400 and the second communication signal output from the digital processing unit 104 to generate a multiplexed communication signal And output it to the optical amplifying section 108.

The optical amplifying unit 108 amplifies the multiplexed communication signal output from the multiplexing and demultiplexing unit 107 and transmits the multiplexed communication signal to the home gateway 200 through the third communication unit 109. The home gateway 200 receives and multiplexes the multiplexed communication signal and outputs the multiplexed communication signal to the multiplexing and demultiplexing unit 107. The multiplexing and demultiplexing unit 107 demultiplexes the multiplexed communication signal to the optical line terminal 400 Data can be transmitted.

Meanwhile, the second wireless unit 330 may include a radio interface unit (RIU) or a radio unit (RU).

An operation method of the master gateway 100 will be briefly described with reference to FIG.

The master gateway 100 receives the first communication signal from the optical line terminal 400 (S701). The master gateway 100 receives the second communication signal from the second wireless unit 330 in step S702 and converts the second communication signal into the intermediate frequency in step S703. And the second communication signal is digitally converted (S704).

Thereafter, the master gateway 100 multiplexes the first communication signal and the digital-converted second communication signal (S705), and transmits the multiplexed communication signal to the home gateway 200 (S706).

That is, the master gateway 100 transmits a multiplexed communication signal overlaid on a passive optical network (PON) line with a communication signal (second communication signal) providing free coverage, to the home gateway 200).

Next, the configuration and operation method of the home gateway 200 providing the freezone will be described in detail with reference to FIGS. 8 to 9. FIG.

FIG. 8 illustrates a configuration of a home gateway 200 and a peripheral connection according to an embodiment of the present invention, and FIG. 9 is a flowchart illustrating an operation of the home gateway 200 of FIG.

8, the home gateway 200 includes a fourth communication unit 201, a multiplexing and demultiplexing unit 202, a wireless link module 203, an Ethernet module 204, a WiFi ) Module 205, a wired switch module 206, and the like, With this configuration, free space coverage and other network services (Internet, Wi-Fi, etc.) can be provided in a certain space.

The fourth communication unit 201 receives the multiplexed communication signal from the master gateway 100 in step S901 and transmits the received multiplexed communication signal to the multiplexing and demultiplexing unit 202 in step S902. The multiplexing and demultiplexing unit 202 demuxs the received multiplexed communication signal and demultiplexes the multiplexed communication signal into a first communication signal and a second communication signal (S903).

The multiplexing and demultiplexing unit 202 transmits the separated first communication signal to the Ethernet module 204 or the Wi-Fi module 205 (S904), and the separated second communication signal is transmitted to the wireless link To the module 203 (S906). Specifically, the Ethernet module 204 or the Wi-Fi module 205 may be connected to an Ethernet device (e.g., various wired communication terminals such as a PC equipped with a wired LAN card) or a wired communication terminal And provides the corresponding communication service to a Wi-Fi device (e.g., various wireless communication terminals such as a PC equipped with a wireless LAN card) (S905).

The radio link module 203 amplifies the second communication signal to a second frequency band that provides free coverage and transmits the second communication signal to the user terminal 1100 through an antenna (not shown) (S907) (1100). ≪ / RTI > At this time, the radio link module 203 can transmit only the downlink traffic to the user terminal 1100.

The wired switch module 206 may separate the first communication signal received from the multiplexing and demultiplexing unit 202 into the Ethernet module 204 and the Wi-Fi module 205, and may transmit the separated first communication signal. The wired switch module 206 may transmit the communication signals received from the Ethernet module 204 and the Wi-Fi module 205 to the multiplexing and demultiplexing unit 202. Meanwhile, the multiplexing and demultiplexing unit 202 may be implemented as an optical splitter.

As described above, the master gateway 100 and the home gateway 200 receive the downlink traffic from the free coverage provided through the home gateway 200 and the uplink traffic from the user terminal 1100, Inter-site carrier aggregation (CA) to be transmitted through the macro base station may be set.

FIG. 10 is a schematic view of a communication system providing a free coverage according to another embodiment of the present invention. In particular, FIG. 10 illustrates a case where free coverage is overlapped with two or more macro cells.

As shown, the freezone coverage 850 is located in a region where the first macrocell 1350 and the second macrocell 2350 overlap, and the first macrocell 1350 is located in the wireless unit 1 (RU) And the second macrocell 2350 is provided through the wireless unit 2 (RU) 2310 and the digital unit 2 (DU) 2320 .

In such an environment, when the user terminal 1100 enters the free coverage area 850, which is provided through the second base station (digital unit 320 shown) and the home gateway 200, quality LTE-A service through a Carrier Aggregation (CA) of a frequency band (f1 frequency band) and a freezone (frequency band f2).

Communication between the first base station 1300 or 2300 and the second base station (the digital unit 320 shown in the figure) may be performed between the base station communication (for example, X2 interface) or the base station control server Lt; / RTI > For example, the digital unit (DU) 320 may communicate directly with the digital unit 1 (DU) 1320 and the digital unit 2 (DU) 2320 via a base station interface (e.g., X2 interface) And can communicate through a base station control server (not shown). The digital unit 1 (DU) 1320 or the digital unit 2 (DU) 2320 may transmit the uplink communication signal of the user terminal 1100 to the digital unit 320.

As shown in the figure, when the user terminal 1100 enters a free coverage area 850 in which two or more macro cells 1330 and 2330 are overlapped with each other, You may have a problem choosing whether to do it. Also, when the user terminal 1100 leaves the free coverage 850, a process of canceling the CA setting is also necessary. This will be briefly described as follows.

The user terminal 1100 may transmit the identification information about the free coverage 850 detected by the user terminal 1100 to the accessing base station when the access terminal enters the free coverage area 850. The free-coverage 850 identification information may include information on a frequency band, a signal measurement value, a load, and the like, on which the free-coverage 850 is provided.

In addition to transmitting identification information regarding the free coverage 850, the user terminal 1100 may also be configured to provide macrocells, each of which is provided via the wireless unit 1 1310 or the wireless unit 2 1410, The identification information on the frequency band, the signal measurement value, the load amount, etc. of the macro cell can be transmitted to the connection base station side.

The base station that has received the identification information determines the handover and the CA setting of the user terminal 1100 in consideration of the signal measurement value and the load amount included in the identification information, .

For example, if the user terminal 1100 is a terminal registered in the free coverage 850 and the signal measurement value of the free coverage 850 is greater than or equal to a reference value, a signal measurement value, a load amount, It is possible to provide an optimum communication environment to the user terminal 1100 through setting a CA macrocell with a PCell and a CA environment with the free coverage 850 as a SCell.

Meanwhile, when the user terminal 1100 leaves the free coverage area 850, the base station side transmits the identification information to the user terminal 1100 ), And release the CA environment setting.

As described above, the wired optical communication network can be used to provide a wired / wireless communication network including an LTE-A service and the like in a predetermined space through the master gateway 100 and the home gateway 200 according to an embodiment of the present invention. It is possible to minimize the social cost of establishing, managing, and using the communication network, and also to improve the reliability in terms of error and security.

Meanwhile, a downlink setting method in a coverage according to an embodiment of the present invention may include a program for performing on a computer and a computer-readable storage medium including the program. The computer-readable storage medium may include program instructions, local data files, local data structures, etc., alone or in combination. The media may be those specially designed and constructed for the present invention. Examples of computer-readable storage media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, magnetic-optical media such as floppy disks, and magnetic and optical media such as ROMs, , And a hardware device specifically configured to store and execute program instructions. Examples of program instructions may include machine language code such as those generated by a compiler, as well as high-level language code that may be executed by a computer using an interpreter or the like.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. That is, the constituent elements disclosed in the present invention are not limited to the structure and the execution process, but may be modified in various ways to achieve the object of the present invention. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: Master Gateway
200: Home Gateway
300: base station 310: radio unit
320: Digital unit
400: optical line terminal
600: Optical splitter
850: Freezone coverage
1100: User terminal

Claims (11)

A method for establishing a downlink in a free coverage by a first base station,
Receiving identification information on the free coverage detected by the user terminal;
Wherein when the signal measurement value included in the received identification information is equal to or greater than a reference value, the first frequency band provided by the first base station is PCell and the second frequency band of the free coverage is SCell, Setting a CA (Carrier Aggregation) environment; And
Determining a downlink resource allocation for the user terminal under the CA environment,
The free-
A home gateway for receiving the multiplex communication signal from a master gateway for generating a multiplex communication signal obtained by multiplexing a first communication signal received from an optical line terminal and a second communication signal received from a second base station, Multiplexing the first communication signal and the second communication signal, and separating the multiplexed signal into the first communication signal and the second communication signal, and providing the second communication signal in the second frequency band.
The method according to claim 1,
The step of determining
Using both the PCell of the first frequency band and the SCell of the second frequency band as the downlink.
The method according to claim 1,
The step of determining
And using only the SCell of the second frequency band as the downlink.
The method according to claim 1,
The downlink setting method in the free coverage
Further comprising using only the PCell of the first frequency band as the uplink of the user terminal in the CA environment.
The method according to claim 1,
The master gateway
Wherein the first communication signal is wired to a radio unit (RU) of the second base station, and the second communication signal is transmitted and received.
6. The method of claim 5,
The master gateway,
Converting the second communication signal received from the radio unit into an intermediate frequency band, digitally converting the converted second communication signal of the intermediate frequency band, and then converting the second communication signal digitally- A method for establishing a downlink in a free coverage area.
The method according to claim 1,
The master gateway
Wherein the first communication signal is wired to a digital unit (DU) of the second base station, and the second communication signal is transmitted / received.
The method according to claim 1,
The home gateway
And converting the separated second communication signal into an Ethernet signal and a Wi-Fi signal, and transmitting the converted second communication signal to a wired terminal or a wireless terminal connected thereto.
9. The method of claim 8,
The home gateway
Multiplexing the Ethernet signal and the Wi-Fi signal transmitted by the wired terminal and the wireless terminal, and transmitting the multiplexed signal to the optical line terminal through the master gateway.
The method according to claim 1,
The home gateway comprises:
Wherein, in communication with the user terminal, only downlink traffic to the user terminal is processed.
The method according to claim 1,
Wherein the master gateway and the home gateway are connected via a wired optical cable.

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