KR102347833B1 - A reflector for changing the directionality of a wireless communication beam and an apparatus comprising thereof - Google Patents

Abstract

The present disclosure relates to a 5G or pre-5G communication system for supporting a higher data rate after a 4G communication system such as LTE. According to an embodiment of the present invention, the reflector changes the direction of the beam incident from the first direction to have the second direction, so that a receiver located apart from an arbitrary object receives the beam. can make it happen By the reflector, it is possible to remove the shaded area where the beam does not reach in the 5G wireless communication system.

Description

A reflector for changing the directionality of a wireless communication beam and an apparatus comprising thereof }

The present invention relates to a wireless communication system, and more particularly, to a reflector including a reflector for changing the direction of a 5G wireless communication beam, and to an apparatus including the same.

Efforts are being made to develop an improved 5G communication system or pre-5G communication system in order to meet the increasing demand for wireless data traffic after commercialization of the 4G communication system. For this reason, the 5G communication system or the pre-5G communication system is called a 4G network after (Beyond 4G Network) communication system or an LTE system after (Post LTE) system.

In order to achieve a high data rate, the 5G communication system is being considered for implementation in the ultra-high frequency (mmWave) band. In order to alleviate the path loss of radio waves and increase the propagation distance of radio waves in the ultra-high frequency band, in the 5G communication system, beamforming, massive MIMO, and Full Dimensional MIMO (FD-MIMO) are used. ), array antenna, analog beam-forming, and large scale antenna technologies are being discussed.

In addition, for network improvement of the system, in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra-dense network (ultra-dense network) ), Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), and reception interference cancellation ) and other technologies are being developed.

In addition, in the 5G system, FQAM (Hybrid FSK and QAM Modulation) and SWSC (Sliding Window Superposition Coding), which are advanced coding modulation (Advanced Coding Modulation: ACM) methods, and FBMC (Filter Bank Multi Carrier), NOMA, which are advanced access technologies, (non orthogonal multiple access), and sparse code multiple access (SCMA) are being developed.

Meanwhile, since the 5G wireless communication system transmits a signal using a beam formed by beamforming in an ultra-high frequency (mmWave) band, a shaded area to which the beam does not reach may occur depending on the location of the receiver.

Accordingly, a need for a method for removing the shadow area in the 5G wireless communication system has emerged.

Due to the above necessity, it is an object of the present invention to remove a shadow area to which a beam does not reach in a 5G wireless communication system.

According to an embodiment of the present invention, the reflector changes the direction of the beam incident from the first direction to have the second direction, so that a receiver located apart from an arbitrary object receives the beam. can

On the other hand, the apparatus according to another embodiment of the present invention changes the direction of a beam incident from a first direction to have a second direction, so that a receiver located apart from an arbitrary object receives the beam It may include a reflector and a fixing unit for fixing the reflector to an arbitrary position.

According to an embodiment of the present invention, it is possible to remove a shadow area to which a beam does not reach in a 5G wireless communication system.

1A and 1B are diagrams illustrating an embodiment in which a beam is transmitted according to the location of a 5G base station;
2a to 2f are views showing a method of installing a reflector and the shape of the reflector to remove a shadow area caused by an object through which a beam is not transmitted;
3A to 3D are views illustrating an embodiment in which a reflective device changes a direction of a beam passing through a window according to an embodiment of the present invention;
4A and 4B are graphs showing transmission loss and antenna loss of the terminal according to the angle of incidence of a beam passing through a glass window;
5A to 5E are views illustrating a reflective device attached to a window frame, according to various embodiments of the present disclosure;
6A to 6D are views illustrating possible forms of a reflective device and effects thereof, according to various embodiments of the present disclosure;
7 is a view showing a reflection device implemented in the form of a V, according to another embodiment of the present invention, and
8A to 8C are views for explaining a form of a reflective device implemented in the form of a V (V) and a method for attaching the reflective device to a window or a window frame;
9 is a view showing a reflector capable of changing the reflection angle of the reflector by controlling the structure of the unit cell according to an embodiment of the present invention;
10A to 10I are views illustrating a reflector capable of changing the reflection angle of the reflector by controlling the shape of the reflector according to various embodiments of the present disclosure;
11a and 11b are views showing the effect of installing a reflector, according to an embodiment of the present invention;
12 is a view showing a reflector installed using a bracket according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In describing the embodiments in the present specification, descriptions of technical contents that are well known in the technical field to which the present invention pertains and are not directly related to the present invention will be omitted. This is to more clearly convey the gist of the present invention without obscuring the gist of the present invention by omitting unnecessary description.

For the same reason, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings. In addition, the size of each component does not fully reflect the actual size. In each figure, the same or corresponding elements are assigned the same reference numerals.

Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

At this time, it will be understood that each block of the flowchart diagrams and combinations of the flowchart diagrams may be performed by computer program instructions. These computer program instructions may be embodied in a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, such that the instructions performed by the processor of the computer or other programmable data processing equipment are not described in the flowchart block(s). It creates a means to perform functions. These computer program instructions may also be stored in a computer-usable or computer-readable memory which may direct a computer or other programmable data processing equipment to implement a function in a particular manner, and thus the computer-usable or computer-readable memory. It is also possible that the instructions stored in the flow chart block(s) produce an article of manufacture containing instruction means for performing the function described in the flowchart block(s). The computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operational steps are performed on the computer or other programmable data processing equipment to create a computer-executed process to create a computer or other programmable data processing equipment. It is also possible that instructions for performing the processing equipment provide steps for performing the functions described in the flowchart block(s).

Additionally, each block may represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical function(s). It should also be noted that in some alternative implementations it is also possible for the functions recited in blocks to occur out of order. For example, two blocks shown one after another may be performed substantially simultaneously, or the blocks may sometimes be performed in the reverse order according to a corresponding function.

At this time, the term '~ unit' used in this embodiment means software or hardware components such as FPGA or ASIC, and '~ unit' performs certain roles. However, '-part' is not limited to software or hardware. '~' may be configured to reside on an addressable storage medium or may be configured to refresh one or more processors. Accordingly, as an example, '~' indicates components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functions provided in the components and '~ units' may be combined into a smaller number of components and '~ units' or further separated into additional components and '~ units'. In addition, components and '~ units' may be implemented to play one or more CPUs in a device or secure multimedia card.

A terminal in the present invention may generally include a mobile terminal, and may indicate a device that has been previously subscribed to a mobile communication system and is provided with a service from the mobile communication system. The mobile terminal may include a smart device such as a smart phone or a tablet PC, which corresponds to an example and the present invention is not limited thereto.

Meanwhile, as used in the following description, a term for identifying an access node, a term referring to network entities, a term referring to messages, a term referring to an interface between network objects, and various identification information are used in the following description. Terms and the like are exemplified for convenience of description. Accordingly, the present invention is not limited to the terms described below, and other terms referring to objects having equivalent technical meanings may be used.

For convenience of description, the present invention uses terms and names defined in the 3GPP LTE (3rd Generation Partnership Project Long Term Evolution) standard. However, the present invention is not limited by the terms and names, and may be equally applied to systems conforming to other standards.

A structure of a next-generation mobile communication system to which the present invention can be applied will be briefly described. The radio access network of a next-generation mobile communication system (hereinafter NR (new radio) or 5G) is composed of a next-generation base station (New Radio Node B, hereinafter NR gNB or NR base station) and NR CN (New Radio Core Network). A user terminal (New Radio User Equipment, hereinafter NR UE or terminal) accesses an external network through an NR gNB and an NR CN.

The NR gNB corresponds to an Evolved Node B (eNB) of the existing LTE system. The NR gNB is connected to the NR UE through a radio channel and can provide a service superior to that of the existing Node B. In the next-generation mobile communication system, since all user traffic is serviced through a shared channel, a device for scheduling by collecting status information such as buffer status, available transmission power status, and channel status of UEs is required. is in charge One NR gNB typically controls multiple cells. In order to implement ultra-high-speed data transmission compared to the current LTE, it can have more than the existing maximum bandwidth, and additionally beamforming technology can be grafted by using Orthogonal Frequency Division Multiplexing (hereinafter referred to as OFDM) as a radio access technology. . In addition, an Adaptive Modulation & Coding (AMC) method that determines a modulation scheme and a channel coding rate according to the channel state of the terminal is applied. NR CN performs functions such as mobility support, bearer setup, and QoS setup. NR CN is a device in charge of various control functions as well as mobility management functions for the terminal and is connected to a number of base stations. In addition, the next-generation mobile communication system can be linked with the existing LTE system, and the NR CN is connected to the MME through a network interface. The MME is connected to the existing base station, the eNB.

Hereinafter, a base station to be described according to an embodiment of the present invention may refer to a 5G base station that transmits a signal using a beam formed by beamforming in an ultra-high frequency (mmWave) band as described above.

1A and 1B are diagrams illustrating an embodiment in which a beam is transmitted according to a location of a base station. Specifically, FIGS. 1A and 1B are diagrams illustrating a base station 100 for transmitting a beam and a plurality of receiving terminals 110 .

The receiving terminal 110 may be customer-premises equipment (CPE) connected to a terminal or service of a communication service provider and related to all terminals connected to devices in a building through a local access network (LAN). The CPE can be viewed as a terminal fixed at an arbitrary location. Alternatively, the receiving terminal 110 may be a building such as a house including at least one of the terminal and the CPE.

For example, in the case where the receiving terminal 110 is a building in which the CPE is mounted outside, the base station transmits the beam in the direction shown in FIG. 1B rather than the base station transmits the beam in the direction shown in FIG. 1A. could be more advantageous. This is because the beam transmitted from the base station is transmitted in a certain direction by beamforming, so that the beam transmitted in the direction shown in FIG. 1B can be transmitted to more buildings.

On the other hand, when the receiving terminal 110 is a building in which the CPE is mounted, when the base station transmits a beam in the direction as shown in FIG.

A case in which the building includes a window parallel to the direction of the beam transmitted from the base station is taken as an example. In this case, the loss of the beam transmitted by the base station shown in FIG. 1B may increase as the amount of reflection of the 5G beam by the glass increases according to the angle of the incident direction and the window included in the building.

Therefore, if the amount of reflection of the beam through the glass window of the building increases according to the incident direction of the beam, the reception rate of the 5G signal inside the building decreases. And as the reception rate of the 5G signal decreases, the inside of the building may become a shaded area for the 5G signal.

On the other hand, as shown in FIG. 2A, when there is an arbitrary object 210 through which the 5G beam 200, such as a tree, cannot pass, the direction opposite to the transmission direction of the 5G beam 200 is a shaded area ( 220) can be For example, if a building such as a house is located in the shaded area 220 , the transmission rate of the 5G beam 200 may be reduced in the house.

Therefore, the present invention proposes a method for removing a shadow area for a 5G signal, which may be generated by not reflecting or transmitting a 5G beam at a specific location.

Specifically, FIGS. 2A to 2F are diagrams illustrating a method of installing a reflection device to remove a shadow area generated by an object through which a beam is not transmitted, and a shape of the reflector.

As shown in FIG. 2A , the reflecting device may be positioned opposite to the direction in which the 5G beam 200 is incident in response to the arbitrary object 210 . The reflective device may include a reflector 230 and a support 235 . The reflector 230 may be fixed to the ground or one surface of the building by using the support 235 .

According to the size, shape, and angle of the reflector 230 , it is possible to secure the reflective coverage as indicated by reference numeral 240 . Accordingly, the 5G beam 200 may be transmitted to a receiving end existing within the reflection coverage 240 through the reflector 230 . For example, the 5G beam 200 by the reflector 230 may be transmitted into a terminal, a CPE, or a house including the terminal, the CPE existing within the reflection coverage 240 .

Meanwhile, FIG. 2B is a diagram specifically illustrating the shape of the reflector 230 , according to an exemplary embodiment. For example, the reflector 230 may have an arbitrary size and may be a metal plate bent at an arbitrary curvature.

As shown in FIG. 2B , preferably, the reflector 230 may have a horizontal and vertical length of 0.5 m. In addition, the reflector 230 may be implemented in the shape of a sectoral arc having a central angle of 44 degrees and a radius of 67 cm.

Meanwhile, the reflector 230 may be implemented in a flat shape. For example, although the reflector 230 has a flat shape, the 5G beam may be dispersed at various angles. Specifically, as shown in FIG. 2C , the reflector 230 may include a plurality of unit cell arrays capable of reflecting beams in different directions. Each of the unit cell arrays may include a plurality of unit cells. By adjusting at least one of the processing shape, size, and spacing of the plurality of unit cells to implement the plurality of unit cells, the angle of dispersion of the 5G beam through each unit cell array may be changed.

Specifically, each of the plurality of unit cell arrays may change a direction of a beam incident in a first direction to a second direction to a fifth direction, respectively. Therefore, the 5G beam 200 incident in the first direction is transmitted through each of the plurality of unit cell arrays through the beam 250 in the second direction, the beam 251 in the third direction, the beam 252 in the fourth direction and The beam 253 in the fifth direction may be dispersed and transmitted. Accordingly, there is an effect that the transmission coverage of the 5G beam is widened.

FIG. 2D is a diagram illustrating a structure of a unit cell 231 and a structure of a reflector 230 implemented as a unit cell array, according to an embodiment. Each of the unit cells 231 may be implemented with metal. The reflector 230 implemented as the unit cell array may include a plurality of the unit cells 231 . The unit cell 231 may include a plurality of unit cells 231 and 232 capable of reflecting the 5G beam incident from the first direction in different directions. For example, the first unit cell 231 may reflect the 5G beam incident from the first direction in the second direction, and the second unit cell 232 may reflect the 5G beam incident from the first direction in the third direction. can be reflected by According to another embodiment, the first unit cell 231 and the second unit cell 232 are alternately arranged, so that the unit cell array can reflect the 5G beam incident in the first direction in the fourth direction. there is also In addition, the unit cell array may further include a dummy unit cell 233 .

In addition, the reflection angle of the unit cells included in the reflector may be changed. Specifically, it will be described with reference to FIG. 9 .

The unit cell 910 included in the reflector 900 may be formed of a variable element. Specifically, the reflection angle by the reflector 900 may be changed according to the shape of the unit cell 910 . For example, when the control unit 920 for changing the shape included in the unit cell 910 is not turned on, the unit cell 910 applies the 5G beam incident in the first direction to the second direction. can be reflected by And when the control unit 920 is turned on, a partial region of the unit cell 910 may be deactivated by the control unit 920 . Accordingly, since the shape of the unit cell 910 is changed by the control unit 920 , the unit cell 910 may reflect the 5G beam incident in the first direction in the third direction.

The reflecting device including the reflector 900 may include a communication unit and a control unit. Accordingly, when a command for controlling the control unit 920 of the reflector 900 is received through the communication unit, the control unit controls the on/off of the control unit 920 by controlling the unit cell The shape of 910 can be changed.

In addition, although FIG. 9 shows that the adjusting unit 920 is included in one unit cell 910 one by one, this is only an exemplary embodiment, and the reflection angle is changed by changing the shape of the unit cell 910 . The number and position of the control unit for the purpose is not limited.

In addition, by changing the shape of the reflector, the reflection angle of the reflector may be changed. Specifically, it will be described with reference to FIGS. 10A to 10I.

First, FIGS. 10A and 10B show an embodiment in which the reflector 1000 included in the reflection device can reflect the incident 5G beam 1010 to the beam 1020 of an arbitrary preset angle. In other words, the reflector 1000 of FIGS. 10A and 10B may reflect the 5G beam 1010 incident at the first angle to the beam 1020 of the second preset angle. However, due to the difference in the shape of the reflector 1000, the coverage area 1040 by the reflector 1000 shown in FIG. 10B is larger than the coverage area 1030 by the reflector 1000 shown in FIG. 10A. can be wide

Also, FIGS. 10C and 10B show an embodiment in which the reflector 1000 can reflect the incident 5G beam 1010 as beams 1020 and 1025 having a plurality of preset angles. In other words, the reflector 1000 of FIGS. 10C and 10D may reflect the 5G beam 1010 incident at the first angle into the beam 1020 of the second preset angle and the beam 1025 of the third angle. . However, due to the difference in the shape of the reflector 1000, the coverage area 1040 by the reflector 1000 shown in FIG. 10D is larger than the coverage area 1030 by the reflector 1000 shown in FIG. 10C. can be wide

The shape of the reflector 1000 according to the location where the reflector 1000 is installed or the characteristics of the installed space (eg, whether the 5G beam is incident into a wide space such as a square or into a narrow space such as an alley or a corner), etc. By transforming , the coverage area needs to be changed.

Alternatively, the coverage area may be changed by changing the shape of the reflector 1000 according to the season and climatic characteristics of the place where the reflector 1000 is installed. For example, the shape of the reflector 1000 may be changed according to the density of trees or leaves in the space in which the reflector 1000 is installed. Specifically, in the case of summer, the shape of the reflector 1000 may be modified to reflect the beam with a wide coverage as the density of leaves of the leaves around the reflector 1000 increases. And in winter, the shape of the reflector 1000 may be modified to reflect the beam with a narrow coverage as the density of the leaves of the leaves decreases.

Accordingly, the reflector 1000 may further include a variable device 1060 for changing the shape of the reflector 1000 . Specifically, as shown in FIG. 10E , the reflector 1000 may be viewed as including a position fixed point 1051 and a position variable point 1052 . Accordingly, the position fixing point 1051 of the reflector 1000 may be fixed to an arbitrary area in which the reflector 1000 is installed. In addition, a variable device 1060 for changing the shape of the reflector 1000 may be attached to the location variable point 1052 . The position fixed point 1051 and the position variable point 1052 may be virtual points where a part of the reflector 1000 is named for convenience of description.

When it is necessary to reflect the 5G beam with the coverage of a narrow area, the variable device 1060 may fix the reflector 1000 in the form shown in FIG. 10E . In addition, when it is necessary to reflect the 5G beam with a wider coverage, the shape of the reflector 1000 may be changed by adjusting the variable device 1060 to the shape shown in FIG. 10F .

When the reflector 1000 is installed on the support 1070 , the reflector 1000 may be fixed in the form shown in FIG. 10G .

Although FIG. 10G illustrates that the reflector 1000 is attached to two variable devices 1060 at two variable position points 1052, this is only an example, and the number of variable devices 1060 is not limited. does not

Also, as shown in FIG. 10G , the reflector 1000 may be fixed to the support 1070 by connecting the position fixing point 1051 of the reflector 1000 and the support 1070 . A connection device 1053 for connecting the support 1070 at a position fixing point 1051 positioned at each corner of the reflector 1000 may be present. In this case, the connection device 1053 may be implemented in the form of a rod. Alternatively, the connecting device 1053 may be implemented in a planar shape connecting all of the position fixing points 1051 positioned at the respective corners.

As the position at which the variable device 1060 is fixed to the support 1070 is changed by the user, the shape of the reflector 1000 may be changed to the shape shown in FIG. 10E or 10F . For example, when the length of the variable device 1060 is shortened and fixed to the support 1070 , the shape of the reflector 1000 may approximate the shape illustrated in FIG. 10F .

On the other hand, the positions of the fixed position point 1051 and the position variable point 1052 may be different. Specifically, in FIGS. 10H and 10I , the central portion of the reflector 1000 may become a position fixing point 1051 and may be connected to the support 1070 . In addition, a position variable point 1052 may be located at each corner of the reflector 1000 . Accordingly, as shown in FIGS. 10H and 10I , the shape of the reflector 1000 may be deformed in a direction opposite to that of FIG. 10G . In addition, in the embodiment shown in FIGS. 10H and 10I , the variable device 1060 may be connected to the variable position point 1052 positioned at each corner of the reflector 1000 . In this case, the device 1070 connecting the reflector 1000 and the support 1070 may be a fixed connecting device that does not change in length or shape, or a variable device for changing the shape of the reflector 1000. .

The reflector 1000 may include a communication unit, a driving unit, a control unit, and the like. In other words, when a control signal for controlling the driving unit attached to the reflector 1000 is received through the communication unit, the control unit controls the driving unit to control the length of at least one of the variable device 1060 and the connecting device 1053 . can be controlled to change.

The control signal may be received at a preset time interval according to an area in which the reflection device is installed, a characteristic of a space, a change of season, and the like. Alternatively, the control signal may be received by a user input.

Meanwhile, as shown in FIG. 2E , the reflector 230 may be installed in the form of a pole using a support part or may be installed in a form attached to the wall.

2F is a view illustrating various types of embodiments in which a reflector is installed. As shown in FIG. 2F , the reflector may be implemented as a stand-type or wall-mounted type and installed at a location desired by a user. In addition, the reflector may be installed in an existing general structure such as a street lamp. The street lamp is only an embodiment, and the reflector may be installed in various structures such as trees, fire hydrants, and advertisement boards.

With the reflector 230 installed in various shapes as described above, it is possible to control a shadow area caused by an obstacle such as a pole.

Specifically, as shown in FIG. 11A , when a pole 1100 of height h exists in the traveling direction in which the 5G beam 1110 is transmitted, the shaded area 1120 by the pole 1100 is the 5G beam ( 1110) may occur in the opposite direction to the direction it was sent.

In this case, the 5G beam 1110 may be transmitted into the shadow area 1120 by installing the reflection device 1130 as shown in FIG. 11B . As described above, the reflective device 1130 may be installed in the form of a pole using a support part, or may be installed by being attached to a part of a building, a wall, or the like.

Meanwhile, FIGS. 3A to 3D are diagrams illustrating an embodiment in which a reflective device removes a shaded area of a 5G beam by changing a direction of a beam passing through a window according to another embodiment of the present invention.

3A shows an embodiment in which a window 300 and a window frame or a wall 310 on which a window frame is installed are included on an outer wall of a building, and a CPE 330 which is an example of a terminal fixed inside the building is installed. Specifically, the 5G base station transmits a 5G signal from outside the building, and the CPE 330 that can receive the 5G signal and transform it into a wireless communication signal such as wifi may be mounted inside the building. The 5G signal may pass through the window 300 of the building obliquely, and may be transmitted to the CPE 330 separated by a distance d.

When the window 300 is made of glass and the angle of incidence of the 5G beam with respect to the window 300 is the same as 340, most of the 5G beam may be reflected by the glass.

For example, as shown in FIG. 3B , assuming that an imaginary line formed in the vertical direction in the window 300 means 0 degrees, as shown in the reference numeral 340, the angle of incidence exceeds ±60 degrees. The 5G beam may be reflected as indicated by reference numeral 341 due to increased reflectivity.

Accordingly, in the present invention, by attaching the reflection device 320 to the window frame or the wall 310 on which the window frame is installed, the incident direction of the 5G beam can be changed. As indicated by reference numeral 250 , the 5G beam incident from the first direction is changed to the second direction by the reflecting device 320 so that the CPE 330 located spaced apart from the window 300 can receive the 5G beam. do. In other words, the reflection device 320 enables the CPE 330 located in the opposite direction to the base station transmitting the beam with respect to the window 300 to receive the beam.

For example, as shown in FIG. 3C , the reflection device 320 may reflect a 5G beam incident from a first direction in a plurality of directions. Specifically, when the reflecting device 320 has a unit cell array structure as described with reference to FIGS. 2A to 2E or when the reflecting device 320 is formed in a curved surface, the reflecting device 320 is 5G incident from the first direction. It becomes possible to cause the beam to be reflected in a plurality of directions. By the reflection device 320, the range of the reception coverage 325 of the 5G beam incident at an arbitrary angle may be widened.

Accordingly, as shown in FIG. 3D , the 5G beam can be transmitted to the receiving end 330 fixed at an arbitrary position inside the building, such as a CPE, through the reflection device 320 .

The reflecting device 320 may further include a fixing part. The fixing unit may allow the reflective device 320 to be fixed to an arbitrary position, such as a window frame or a wall 310 on which a window frame is installed. For example, one surface of the reflection device 320 may be a reflective part, and the other surface may be a fixed part.

The fixing part may be used interchangeably with words such as a fastening part or a support part, and may include all components used to install, mount, or attach the reflective part of the reflective device 320 to the ground or one surface of a building.

Meanwhile, FIGS. 4A and 4B are graphs showing transmission loss and antenna loss of a terminal according to an incident angle of a beam passing through a glass window.

Assuming that an imaginary line formed from the glass window 300 toward the CPE 330 in the vertical direction means 0 degrees, when the incident angle of the 5G beam exceeds ±60 degrees, as shown in FIG. 3A , the transmission It can be seen that the loss increases rapidly.

In addition, as shown in FIG. 4B , when the incident angle of the 5G beam exceeds ±60 degrees, it can be seen that the antenna loss also increases sharply in the terminal.

Meanwhile, FIGS. 5A to 5E are views illustrating a reflective device attached to a wall on which a window frame is installed, according to various embodiments of the present disclosure. The reflecting device may collectively refer to a device including a reflecting unit and a fixing unit.

First, as described above, FIG. 5A is a diagram illustrating an embodiment in which the reflective device 320 is attached to the window frame of the window 300 or a portion of the wall 310 on which the window frame is installed.

Specifically, FIG. 5B is a view showing a reflective device 320 in a flat form attached to a window frame of the window 300 or a portion of the wall 310 on which the window frame is installed. The reflection device 320 may change the direction of the beam so that the beam incident in the first direction is incident through the window 300 in the second direction. For example, when the beam incident from the first direction is a beam incident at a first angle or more in a direction perpendicular to the window 300 , the reflecting device 320 may detect the beam in a direction perpendicular to the window 300 . The direction of the beam may be changed to pass through the window 300 within a second angle.

Accordingly, a receiving end such as the CPE 330 fixed to an arbitrary position inside the building by the reflection device 320 may receive the 5G beam.

5C is a view illustrating a reflective device including a fixing part and a reflective part protruding in a direction opposite to the fixing part according to another embodiment of the present invention. Specifically, as shown in FIG. 5C , the fixing part 320-1 of the reflecting device is a flat surface, and the reflecting device may be attached to a window frame or a wall 310 on which the window frame is installed.

The reflector 320 - 2 protruding in the opposite direction of the fixing unit may change the 5G beam incident from the first direction into a beam having a plurality of directions. For example, at least a portion of the reflector 320 - 2 may be formed to have a curved surface. Therefore, when the 5G beam is incident on the curved surface of the reflector 320-2 in the first direction, the reflector 320-2 can be dispersed into a plurality of beams having a plurality of directions so that the components of the 5G beam are diversified. there will be

5C illustrates a case in which the reflecting device is implemented in a semi-cylindrical shape, the reflecting device may be implemented in a cylindrical or conical shape. In addition, the inside of the reflection device may be empty or filled with a metal.

Depending on the size of the reflector 320 - 2 , the direction in which the 5G beam is dispersed may be different. Accordingly, the size of the reflector 320 - 2 may vary depending on the size of the window to which the reflective device is attached, the location of the CPE 330 installed inside the building, and the like. For example, the size of the reflector 320 - 2 may be determined in consideration of the location of the CPE 330 so that a 5G beam may be incident through the window.

5D is a diagram illustrating an embodiment in which the reflector 320 is installed to protrude from the window sill, according to another embodiment of the present invention. And Figure 5e is a view showing an embodiment in which the reflector 320 is installed on the window (300). A specific embodiment in which the reflector 320 is installed on the window 300 will be described later.

Meanwhile, FIGS. 6A to 6D are diagrams illustrating possible forms of a reflective device and effects thereof, according to various embodiments of the present disclosure.

As shown in FIG. 6A, when the reflecting device 320 and the CPE 330 are installed at 0.5 m intervals inside and outside the window 300, the reflecting device 320 changes the direction of the incident 5G beam, 300) can be made to pass through the window 300 into a coverage having a length of L inside.

6B is a diagram illustrating a case in which the reflection device 320 is installed in the same building as the base station 600 . In this case, the reflection device 320 may also change the direction of the 5G beam transmitted to the base station 600 . Accordingly, the 5G beam may be transmitted without generating a shadow area even at locations such as the interior, exterior wall, and periphery of the exterior wall of a building by the reflection device 320 .

Also, FIG. 6c is a diagram illustrating a case in which the reflection device 320 is installed in a building different from the base station 600 . At this time, even when an obstacle such as a tree exists between the building in which the reflection device 320 and the base station 600 are installed, as shown in FIG. 6c , it can be generated by the obstacle by the reflection device 320 It becomes possible to remove the shaded area.

Meanwhile, FIG. 6D shows an example of coverage and loss according to the shape of the reflection device 320 described with reference to FIGS. 6A to 6C . For example, as shown in FIG. 6D , even if the size is similar to that of the reflector including the planar reflector, the reflective device including the cone-shaped reflector may secure a wider coverage L. In addition, even with the same cone-shaped reflector, the wider the length of the curved surface, the wider the coverage (L) can be secured.

Ensuring wide coverage means that the 5G beam incident in the first direction can pass through the window in the second direction with a wider range. However, as the coverage increases, the loss of the 5G beam may increase.

Therefore, depending on the use of the building, the size of the window, the installation position of the base station 600, the distance between the reflector 320 and the base station 600, and the installation position of the CPE 330, in consideration of the size of coverage and 5G loss Various types of reflective devices may be installed.

Meanwhile, FIG. 7 is a diagram illustrating a reflective device implemented in a V-shape according to another embodiment of the present invention. The V-shaped reflective device illustrated in FIG. 7 may be a reflective device in which two reflectors abut one edge and are attached, or may be a reflective device in which one reflector is bent to form a V-shaped reflective device. The V-shaped reflective device may be transparently implemented and attached to a window.

Hereinafter, with reference to FIGS. 8A to 8C , a form of a reflective device implemented in a V-shape and a method of attaching the reflective device to a window or a window frame will be described in detail.

Although FIG. 8A specifically shows the size of the reflector 800 of the reflective device, this is only an example, and the size of the reflector 800 is not limited to that illustrated in FIG. 8A .

A case in which a glass window is present in a direction indicated on the x-y plane in FIG. 8A and a receiving end is present on the opposite side to the reflector 800 with respect to the x-y plane is taken as an example. In this case, the beam transmitted by the receiver in the 10 degree direction inside the glass window may be changed to a beam in the 80 degree direction by the reflector 800 and transmitted to the base station. On the other hand, the beam received in the 80 degree direction by the base station may also be changed in the 10 degree direction by the reflector 800 and transmitted to the terminal.

8B is a diagram specifically illustrating an embodiment in which the reflector 800 is attached to the glass window 830 .

The reflecting device 810 including the reflector 800 may further include a fixing part 820 . The fixing part 820 allows the reflector 800 to be fixed to the glass window 830 by being spaced apart by a predetermined distance. The reflecting device 810 including the reflector 800 and the fixing part 820 may be formed of a material that is transparent and does not reflect a beam.

Accordingly, when the reflector 800 is formed at an angle of 100 degrees as shown in FIG. 8C , the beam incident at ±50 degrees in the Z direction toward the reflector 800 passes through the reflector 800, and the glass window (830) may be passed in.

In addition, the surface of the reflector 800 facing the glass window 830 is made of a transparent reflector, as shown in FIG. 8c , the beam exceeding ±50 degrees in the Z direction changes the direction to the inside of the glass window 830 can be transmitted to Meanwhile, when the reflector 800 is installed, a separate device may be used as shown in FIG. 12 . For example, FIG. 12 is a diagram illustrating a form in which a reflector 800 is installed using a bracket 850 according to an embodiment of the present invention. Specifically, as described above, when there is no wall where a reflector for changing the direction of a beam incident to the glass window 830 can be installed, or the reflector 800 is implemented in a planar shape, or the glass window 830 ), as shown in FIG. 8D , when the reflector 800 cannot be attached to the glass window 830, the bracket 850 may be used.

The bracket 850 may be fixed to a portion of a window frame of the glass window 830 and a portion of a wall on which the glass window 830 is installed, respectively. In addition, a reflector 800 may be installed and fixed to the upper end of the bracket 850 . Even at this time, the reflector 800 is not limited to a shape such as a planar shape, a cylindrical shape, a fan shape, a V-shaped shape, etc. as described above.

In addition, the reflector 800 installed using the bracket 850 may also be implemented in a variable form as described in FIGS. 10G to 10I . For example, a support is fixed to the upper end of the bracket 850 , and the reflector 800 may be attached to the support.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is common in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications may be made by those having the knowledge of, of course, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

100: base station 110: receiving end
200: 5G beam 210: random object
220: shaded area 230: reflector
235: support 240: reflective coverage

Claims (16)

In the reflector,
By changing the direction of the beam incident from the first direction to have a second direction, so that a receiver located apart from an arbitrary object can receive the beam,
The reflector, characterized in that the reflector is fixed at an arbitrary position by a fixing unit capable of controlling the attachment angle of the reflector so that the second direction can be adjusted. According to claim 1,
a first cell group for changing a direction of the beam in the second direction; and
a second cell group for changing the direction of the beam in a third direction; Reflector, characterized in that it further comprises. The method of claim 1,
The reflector, characterized in that the direction of the beam is changed so that the receiver located in the opposite direction to the base station that transmits the beam around the arbitrary object can receive the beam. According to claim 1,
When the arbitrary object is a material through which the beam is not transmitted, the reflector is positioned opposite to a direction in which the beam is incident corresponding to the arbitrary object. According to claim 1,
A portion in a direction opposite to a surface in contact with a fixing part for fixing the reflector to an arbitrary position has a protruding shape, and the beam incident from the first direction is changed to a beam having a plurality of directions reflector. According to claim 1,
When the arbitrary object is a glass object, and the beam incident in the first direction is a beam incident at a first angle or more in a direction perpendicular to the arbitrary object, the beam is a second direction perpendicular to the arbitrary object and redirecting said beam to pass through said arbitrary object within two angles. According to claim 1,
When the arbitrary object is a glass window, it is formed to have a V-shape, and a plane formed by the vertex of the V and the center line of the receiver is perpendicular to the glass window. The method of claim 1,
When the arbitrary object is a glass window, the reflector, characterized in that the reflector is fixed to the window frame of the glass window by the fixing part capable of controlling the attachment angle of the reflector so that the second direction can be adjusted. In the device,
a reflector configured to change the direction of a beam incident from a first direction to have a second direction so that a receiver spaced apart from an arbitrary object can receive the beam; and
a fixing part for fixing the reflector to an arbitrary position; including,
The fixing part,
Device characterized in that the attachment angle of the reflector can be controlled so that the reflector is fixed at an arbitrary position and the second direction can be adjusted. 10. The method of claim 9,
The reflector is
a first cell group for changing a direction of the beam in the second direction; and
a second cell group for changing a direction of the beam in a third direction; Device characterized in that it further comprises. 10. The method of claim 9,
The reflector is
The apparatus according to claim 1, wherein the direction of the beam is changed so that the receiver located in the opposite direction to the base station transmitting the beam with respect to the arbitrary object can receive the beam. 10. The method of claim 9,
When the arbitrary object is a material through which the beam is not transmitted, the reflector is positioned opposite to a direction in which the beam is incident corresponding to the arbitrary object. 10. The method of claim 9,
The reflector is
An apparatus characterized in that a portion of the opposite direction of the surface in contact with the fixing part has a protruding shape, and the beam incident in the first direction is changed to a beam having a plurality of directions. 10. The method of claim 9,
The reflector is
When the arbitrary object is a glass object, and the beam incident from the first direction is a beam incident at a first angle or more in a direction perpendicular to the arbitrary object, the beam is a second direction perpendicular to the arbitrary object and redirecting the beam to pass through the arbitrary object within two angles. 10. The method of claim 9,
The reflector is
When an arbitrary object is a glass window, it is formed in a V-shape, and the plane formed by the vertex of the V and the center line of the receiver is perpendicular to the glass window,
The fixing part is attached to one surface of the arbitrary object so that the reflector is fixed to the arbitrary object. 10. The method of claim 9,
The fixing part,
When the arbitrary object is a glass window, the reflector is fixed to the window frame of the glass window, and the attachment angle of the reflector can be controlled so that the second direction can be adjusted.

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