KR102502768B1 - Method for operating very high frequency based access network, and apparatus for the same - Google Patents

Abstract

A method of operating a cell performed by a central unit (CU) using at least one antenna assembly disposed around a moving path of a moving object includes forming a cell for each of at least two or more layers using the at least one antenna assembly; and moving the cell according to a speed set for a layer corresponding to the cell, wherein a mobile body having a speed corresponding to a speed set for a layer corresponding to the cell is connected to the cell. can

Description

Method for operating very high frequency based access network, and apparatus for the same

The present invention relates to an ultra-high frequency based radio access network, and more particularly, to a method for operating cells of an ultra high frequency based radio access network and an apparatus therefor.

In order to meet the wireless data transmission capacity required in the future, it is important to discover new frequency bands. Compared to radio wave propagation characteristics when using existing cellular frequencies for wireless access, radio wave propagation characteristics (reflection/diffraction/refraction/transmission, etc.) when using ultra-high frequencies for wireless access appear different.

As the frequency increases, a beamforming method is used to reduce free space loss proportional to the square of the frequency, and blocking occurs due to strong linearity, but it has good characteristics that spatial interference does not spread, and more beams are simultaneously used to secure service coverage. It may be used separately or spatially and temporally by sweeping. As a result, a change in configuration and operation of an existing radio access network is required while using ultra-high frequency.

An object of the present invention to solve the above problems is to provide a method for operating a cell of an ultra-high frequency based radio access network.

Another object of the present invention to solve the above problems is to provide an apparatus for operating a cell of an ultra-high frequency based radio access network.

According to an embodiment of the present invention for achieving the above object, a cell operating method performed by a central unit (CU) using at least one antenna assembly disposed around a moving path of a mobile body includes the at least one antenna assembly Forming a cell for each layer of at least two layers using and moving the cell according to a speed set for a layer corresponding to the cell, and a mobile body having a speed corresponding to a speed set for a layer corresponding to the cell may be connected to the cell.

Each of the at least one antenna assembly may function as a distributed unit (DU).

Each of the at least one antenna assembly may include a set of at least one antenna module composed of M (M is a natural number greater than or equal to 1) rows and N (N is a natural number greater than or equal to 1) columns.

Moving the cell may be performed by selectively turning on/off the at least one antenna module.

Moving the cell may be performed by controlling the phase and weight of the at least one antenna module.

The at least one antenna assembly may be connected to the CU through a P2MP/MP2P switch.

The P2MP/M2PM switch simultaneously transmits one downlink signal to the at least one antenna assembly, combines signals received from the at least one antenna assembly, and transmits a combined signal to the CU, or Signals received from the antenna assembly of may be selectively transferred to the CU.

A first part of the at least one antenna assembly may be installed on one side of the movement path, and a second part of the at least one antenna assembly may be installed on the other side of the movement path.

At least a portion of the beam coverage formed by the first part of the at least one antenna assembly may vertically overlap at least a portion of the beam coverage formed by the second part of the at least one antenna assembly.

At least a portion of the beam coverage formed by the first part of the at least one antenna assembly may horizontally overlap at least a portion of the beam coverage formed by the second part of the at least one antenna assembly.

A different frequency allocation (FA) may be allocated to each cell generated for each of the at least two or more layers.

According to one embodiment of the present invention for achieving the above object, a cell management apparatus for operating cells using at least one antenna assembly disposed around a moving path of a mobile body includes at least one processor; and a memory storing at least one command executed by the at least one processor, wherein the at least one command, when executed by the at least one processor, causes the at least one processor to transmit the at least one antenna assembly. Forming a cell for each layer of at least two layers using and moving the cell according to a speed set for a layer corresponding to the cell, and a mobile body having a speed corresponding to a speed set for a layer corresponding to the cell may be connected to the cell. .

Each of the at least one antenna assembly functions as a distributed unit (DU), and the cell management device may function as a central unit (CU).

Each of the at least one antenna assembly may include a set of at least one antenna module composed of M (M is a natural number greater than or equal to 1) rows and N (N is a natural number greater than or equal to 1) columns.

The step of moving the cell may be performed by selectively turning on/off the at least one antenna module or by controlling the phase and weight of the at least one antenna module.

The at least one antenna assembly may be connected to the CU through a P2MP/MP2P switch.

The P2MP/M2PM switch simultaneously transmits one downlink signal to the at least one antenna assembly, combines signals received from the at least one antenna assembly, and transmits a combined signal to the CU, or Signals received from the antenna assembly of may be selectively transmitted to the CU.

A first part of the at least one antenna assembly may be installed on one side of the movement path, and a second part of the at least one antenna assembly may be installed on the other side of the movement path.

At least a portion of the beam coverage formed by the first part of the at least one antenna assembly may vertically overlap at least a portion of the beam coverage formed by the second part of the at least one antenna assembly.

At least a portion of the beam coverage formed by the first part of the at least one antenna assembly may horizontally overlap at least a portion of the beam coverage formed by the second part of the at least one antenna assembly.

In the case of using the cell operating method and apparatus according to the embodiments of the present invention, by hierarchically configuring moving cells corresponding to various speeds of a moving object, handover occurrence is reduced in an ultra-high frequency access network, and performance degradation due to frequent handover occurrence is reduced. can prevent In addition, in the case of a lower layer (ie, a cell layer moving at a low speed), a frequency recycling rate can be increased by reducing cell coverage, and capacity per unit area can be increased. In addition, when multiple vehicles are connected to a mobile cell of any one layer, the data rate per vehicle can be continuously maintained or the data rate per vehicle can be improved through carrier aggregation using remaining FAs.

1 is a conceptual diagram for explaining the configuration of an antenna assembly according to an embodiment of the present invention.
2 is a conceptual diagram for explaining a first example of a beam sweeping operation using antenna modules belonging to antenna assemblies according to an embodiment of the present invention.
3 is a conceptual diagram for explaining a second example of a beam sweeping operation using antenna modules belonging to antenna assemblies according to an embodiment of the present invention.
4 is a conceptual diagram for explaining a third example of a beam sweeping operation using antenna modules belonging to antenna assemblies according to an embodiment of the present invention.
5 is a conceptual diagram for explaining a first example of beam coverages formed by antenna modules belonging to an antenna assembly according to an embodiment of the present invention.
6 is a conceptual diagram for explaining a first example of a beam group formed by antenna modules belonging to an antenna assembly according to an embodiment of the present invention.
7 is a conceptual diagram for explaining a second example of beam coverages formed by antenna modules belonging to an antenna assembly according to an embodiment of the present invention.
8 is a conceptual diagram for explaining a second example of a beam group formed by antenna modules belonging to an antenna assembly according to an embodiment of the present invention.
9 is a conceptual diagram for explaining beam groups when G.TRX of FIG. 6 and G.TRX of FIG. 8 are applied to both sides of a road.
10 is a conceptual diagram for explaining a first example of beam groups formed by antenna modules of four antenna assemblies according to an embodiment of the present invention.
FIG. 11 is a conceptual diagram for explaining vertical overlapping and horizontal non-overlapping of beam groups of FIG. 10 .
12 is a conceptual diagram for explaining a second example of beam groups formed by antenna modules of four antenna assemblies according to an embodiment of the present invention.
13 is a conceptual diagram for explaining vertical overlapping and horizontal overlapping of beam groups of FIG. 12 .
14 is a conceptual diagram for explaining a first example of beam groups formed by antenna modules of two antenna assemblies according to an embodiment of the present invention.
FIG. 15 is a conceptual diagram for explaining vertical non-overlapping and horizontal non-overlapping of the beam groups of FIG. 14 .
16 is a conceptual diagram for explaining a second example of beam groups formed by antenna modules of two antenna assemblies according to an embodiment of the present invention.
FIG. 17 is a conceptual diagram for explaining vertical overlap and horizontal overlap of the beam groups of FIG. 16 .
18 is a conceptual diagram for explaining installation forms of an antenna assembly according to an embodiment of the present invention.
19 is a conceptual diagram for explaining blocking according to a road width in an installation form of an antenna assembly according to an embodiment of the present invention.
20 to 22 are conceptual views for explaining various road environments to which installation forms of antenna assemblies according to an embodiment of the present invention are applied.
23 to 26 are conceptual diagrams for explaining installation environments of an antenna assembly according to an embodiment of the present invention.
27A and 27B are conceptual diagrams for explaining a first example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.
28a and 28b are conceptual diagrams for explaining a second example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.
29A and 29B are conceptual diagrams for explaining a third example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.
30A to 30C are conceptual diagrams for explaining a fourth example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.
31A and 31B are conceptual diagrams for explaining a fifth example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.
32a and 32b are conceptual diagrams for explaining a sixth example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.
33A and 33B are conceptual diagrams for explaining a seventh example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.
34a and 34b are conceptual diagrams for explaining an eighth example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.
35A and 35B are conceptual diagrams for explaining a ninth example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.
36 is a conceptual diagram for explaining a cell planning method for an ultra-high frequency access network according to an embodiment of the present invention.
37 to 41 are conceptual views for explaining sliding of a cell formed by antenna assemblies according to an embodiment of the present invention.
42 is a conceptual diagram for explaining mobile cell operation according to an embodiment of the present invention.
43 is a conceptual diagram for explaining a support topology for mobile cell operation according to an embodiment of the present invention.
44 is a conceptual diagram for explaining the advantages of the concept of a mobile cell according to an embodiment of the present invention.
45 is a block diagram for explaining the configuration of an apparatus capable of performing a method according to embodiments of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

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

In the following description, 'ultra high frequency' means SHF (super high frequency) in the 3 to 30 GHz frequency range, EHF (extremely high frequency) in the 300 to 300 GHz frequency range, or THF (tremendously high frequency) in the 300 to 3000 GHz frequency range. can

In the following description, a moving object may mean a vehicle, and a moving path may mean a road on which a vehicle moves. However, various embodiments of the present invention may also be applied to various moving objects such as high-speed trains or air vehicles (airplanes or drones). In this case, the moving route may mean an airway along which a railroad or an airplane moves.

Configuration of antenna assembly and beam sweeping using the same

1 is a conceptual diagram for explaining the configuration of an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 1, an antenna assembly 100 according to an embodiment of the present invention includes a total of 45 (= 5 (rows) X 9 (columns)) antenna modules (hereinafter referred to as 'antenna modules (AM)'). ) is included. That is, the antenna assembly 100 may be composed of an array of M X N AMs (where M and N are each a natural number of 1 or greater).

Although FIG. 1 shows an embodiment in which the antenna assembly is composed of 45 AMs, the number of AMs constituting the antenna assembly, the number of rows, and the number of columns may be variously changed according to service coverage and performance of the AMs.

Each AM constituting the antenna assembly 100 may be composed of m X n antenna elements (hereinafter referred to as 'antenna elements (AEs)'). Since one AM uses ultra-high frequencies, it can be made small in size, and a beam can be emitted over a long distance by allowing one AM to form one beam using a plurality of AEs.

At this time, a beam formed by one AM may exist in several subbands (frequency allocation 1 (FA1), FA2, FA3, FA4, FA5, ??), and the beams of each subband may be independently operated. can

In the antenna assembly 100, one AM may be turned on/off for each beam divided by FA. For example, it is possible to turn on all FA1s in 45 AMs or spatially turn on/off the AMs to operate as if the beam is sweeping.

Meanwhile, the antenna assembly may function as a distributed unit (DU) and may be installed in a ground transmission and reception point (G.TRX) located around a moving path of a mobile body. Since the antenna assembly is installed in G.TRX, the antenna assembly may be referred to as G.TRX below.

In a road environment, the G.TRX can be installed in existing infrastructure such as electrified street lights. However, when there is no existing infrastructure such as a street light, a separate pole or support is installed, and the G.TRX can be installed using the pole or support.

2 is a conceptual diagram for explaining a first example of a beam sweeping operation using antenna modules belonging to antenna assemblies according to an embodiment of the present invention.

Referring to FIG. 2, three cases (CASE A, CASE B, CASE C) of beam sweeping through ON/OFF control of AMs of G.TRX are described.

First, in CASE A, AMs corresponding to one column located in G.TRX may be sequentially ON/OFF controlled according to the lapse of time (eg, T1, T2, T3, T4, and T5). For example, at time T1, AMs 1-1, 2-1, 3-1, 4-1, and 5-1 located in the first column may be turned on. In addition, at time T2, the AMs 1-1, 2-1, 3-1, 4-1, and 5-1 located in the first column are turned off, and the AMs 1-2, 2-2, and 5-1 located in the second column are turned off. 3-2, 4-2, 5-2) can be turned ON. In addition, at time T3, the AMs 1-2, 2-2, 3-2, 4-2, and 5-2 located in the second column are turned off, and the AMs 1-3, 2-3, and 5-2 located in the third column are turned off. 3-3, 4-3, 5-3) can be turned ON. That is, in CASE A, five AMs corresponding to one column are slid to the right without overlapping through ON/OFF control of the AMs.

Next, in CASE B, AMs corresponding to two columns located in G.TRX may be sequentially ON/OFF controlled according to the lapse of time (eg, T1, T2, T3, T4, and T5). For example, at time T1, the AMs 1-1, 2-1, 3-1, 4-1, and 5-1 in the first column and the AMs 1-2, 2-2, and 3-1 in the second column 2, 4-2, 5-2) can be turned ON. In addition, at time T2, the AMs located in the two columns turned ON at time T1 are turned off, and the AMs (1-3, 2-3, 3-3, 4-3, 5-3) located in the third column and the fourth column Positioned AMs (1-4, 2-4, 3-4, 4-4, 5-4) can be turned ON. In addition, at time T3, the AMs located in the two columns turned ON at time T2 are turned off, and the AMs (1-5, 2-5, 3-5, 4-5, 5-5) located in the fifth column and the sixth column The located AMs (1-6, 2-6, 3-6, 4-6, 5-6) can be turned ON. That is, in CASE B, 10 AMs corresponding to two columns are slid to the right without overlapping through ON/OFF control of the AMs.

Finally, in CASE C, AMs corresponding to the three columns located in G.TRX may be sequentially ON/OFF controlled according to the lapse of time (eg, T1, T2, T3, T4, and T5). For example, at time T1, AMs (1-1, 2-1, 3-1, 4-1, 5-1) located in the first column and AMs (1-2, 2-2, 3-1) located in the second column 2, 4-2, 5-2) and AMs (1-3, 2-3, 3-3, 4-3, 5-3) located in the third row can be turned on. In addition, at time T2, AMs located in the three columns turned ON at time T1 are turned off, and AMs located in the fourth column (1-4, 2-4, 3-4, 4-4, 5-4), located AMs (1-5, 2-5, 3-5, 4-5, 5-5), and AMs located in the sixth column (1-6, 2-6, 3-6, 4-6, 5 -6) can be turned ON. In addition, at time T3, AMs located in the three columns turned ON at time T2 are turned off, and AMs located in the seventh column (1-7, 2-7, 3-7, 4-7, 5-7), located in the eighth column AMs (1-8, 2-8, 3-8, 4-8, 5-8) and AMs located in row 9 (1-9, 2-9, 3-9, 4-9, 5-9 ) can be turned ON. That is, in CASE C, 15 AMs corresponding to 3 columns are slid to the right without overlapping through ON/OFF control of the AMs.

CASE A, CASE B, and CASE C illustrated in FIG. 2 are schemes in which previously ON AMs and currently ON AMs do not overlap. In this movement, various types of other switched movement schemes (beam sweeping) may be applied to some FAs rather than all available FAs. For example, as described in FIG. 2, AMs may move left as well as right. Alternatively, AMs located in G.TRX may be divided and moved in opposite directions. For example, AMs located in rows 1/2/3 of G.TRX can be moved through ON/OFF control in the left direction, and AMs located in rows 4/5 can be moved through ON/OFF control in the right direction. . Alternatively, AMs located in G.TRX may be moved in different directions for each FA. For example, FA1 may be moved to the right based on all rows, and FA2 may be moved left based on all rows.

3 is a conceptual diagram for explaining a second example of a beam sweeping operation using antenna modules belonging to antenna assemblies according to an embodiment of the present invention.

Referring to FIG. 3, three cases (CASE A', CASE B', CASE C') of beam sweeping through ON/OFF control of AMs of G.TRX are described. Unlike the cases (CASE A, CASE B, and CASE C) illustrated in FIG. 2, CASE A', CASE B', and CASE C' in FIG. 3 are some of the previously turned ON AMs based on columns. It is a method of overlapping (overlap) and some of the currently ON AMs.

First, CASE A' is a method of turning on AMs corresponding to two columns (a total of 10 AMs) and moving to the right while overlapping one column. CASE B' is a method of turning on AMs located in three columns (a total of 15 AMs) and moving to the right while overlapping two columns. CASE C' is a method of turning on AMs located in four columns (a total of 20 AMs) and moving them to the right while overlapping two columns.

In this movement, various types of other switched movement schemes (beam sweeping) may be applied to some FAs rather than all available FAs. For example, as described in FIG. 3, AMs may move left as well as right. Alternatively, AMs located in G.TRX may be divided and moved in opposite directions. For example, AMs located in rows 1/2/3 of G.TRX can be moved through ON/OFF control in the left direction, and AMs located in rows 4/5 can be moved through ON/OFF control in the right direction. . Alternatively, AMs located in G.TRX may be moved in different directions for each FA. For example, FA1 may be moved to the right based on all rows, and FA2 may be moved left based on all rows.

G. TRX illustrated in FIG. 1 has 45 AMs (= 5 rows X 9 columns) installed, and all AMs can be turned on and operated. Alternatively, as illustrated in FIGS. 2 and 3 , an effect similar to beam sweeping (a switched movement method or a sliding movement method) may be obtained through ON/OFF control of specific AMs.

Meanwhile, the same effect as the ON/OFF control of the AMs illustrated in FIGS. 2 and 3 can be obtained by installing only the AMs corresponding to one column (or row) in the center and controlling the phases and weights of these AMs.

4 is a conceptual diagram for explaining a third example of a beam sweeping operation using antenna modules belonging to antenna assemblies according to an embodiment of the present invention.

Referring to FIG. 4, ON for the AMs described in FIGS. 2 and 3 through phase and weight control for one row of AMs (5 AMs) installed in the center of G.TRX. The same effect as /OFF control can be obtained. This control scheme may be referred to as '1D (line) weight & phase control'. Meanwhile, the discrete movement method of AM as shown in FIGS. 2 and 3 may be simulated through such phase and weight control (bottom left of FIG. 4). Alternatively, a continuous AM movement method without spatial division may be simulated through such phase and weight control (lower right of FIG. 4).

Meanwhile, the concept of cell movement by movement of AMs through ON/OFF control for AMs or phase/weight control for AMs described above will be described later with reference to FIGS. 37 to 41 .

Beam Coverage and Beam Group Configuration

5 is a conceptual diagram for explaining a first example of beam coverages formed by antenna modules belonging to an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 5 , G.TRX may be installed on a pole such as a street light on one side (eg, A side) of a road. As illustrated in FIG. 1 , assuming that G.TRX includes 45 AMs arranged in 5 rows X 9 columns, each of the 45 AMs may individually form service coverage on the road. In this case, service coverage formed by each of the AMs may be referred to as 'beam coverage (BC)'. Even in AM operated under the same conditions, each beam coverage area may appear different.

Assuming the antenna assembly of FIG. 1, the AM beam coverage corresponding to the 4th row and 6th column can be expressed as 'BC-46'. More specifically, since this is the coverage projected from the A side, it can be marked as 'BC-A46 coverage'.

6 is a conceptual diagram for explaining a first example of a beam group formed by antenna modules belonging to an antenna assembly according to an embodiment of the present invention.

The beam coverage formed by each of the 45 AMs mounted on the G.TRX described in FIG. 1 is independently operated for each of several subbands (FA1, FA2, FA3, FA4, ??) belonging to all available FAs. It can be. Therefore, it can be assumed that each AM has beam coverage for each FA. BCs for each FA may be individually operated as in the case illustrated in FIGS. 2 and 3 .

Referring to FIG. 6, if 45 AMs of G.TRX synchronize the same content to the beam coverages generated for each FA (i.e., content synchronization) and simultaneously transmit downlink or receive uplink, these AMs are one cell. will operate as

For example, if beams corresponding to FA1 are grouped and operated as one cell, this one cell may be referred to as 'BG FA1 Side A 1Site Cell'. Here, 'BG' means a beam group, 'Side A' means a beam group formed by AMs installed on side A of the road, and '1Site' means a beam group at one G.TRX site. It can mean that it was formed by Similarly, many cells such as 'BG FA2 Side A 1 Site Cell', 'BG FA3 Side A 1 Site Cell', and 'BG FA4 Side A 1 Site Cell' may exist simultaneously in the same space. Beams grouped for each FA may be different.

7 is a conceptual diagram for explaining a second example of beam coverages formed by antenna modules belonging to an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 7 , G.TRX may be installed on a pole such as a street light on the other side (eg, B side) of the road. As illustrated in FIG. 1 , assuming that G.TRX includes 45 AMs arranged in 5 rows X 9 columns, each of the 45 AMs may individually form service coverage on the road. As in the case of FIG. 5 , service coverage formed by each AM may be referred to as 'beam coverage (BC)'. Even in AM operated under the same conditions, each beam coverage area may appear differently.

Assuming the antenna assembly of FIG. 1, the beam coverage of AM corresponding to the 4th row and 6th column can be denoted as 'BC-46'. ' may be indicated.

8 is a conceptual diagram for explaining a second example of a beam group formed by antenna modules belonging to an antenna assembly according to an embodiment of the present invention.

The beam coverage formed by each of the 45 AMs mounted on the G.TRX described in FIG. 1 is independently operated for each of several subbands (FA1, FA2, FA3, FA4, ??) belonging to all available FAs. It can be. Therefore, it can be assumed that each AM has beam coverage for each FA. BCs for each FA may be individually operated as in the case illustrated in FIGS. 2 and 3 .

Referring to FIG. 8, if 45 AMs of G.TRX synchronize the same content to the beam coverages generated for each FA (i.e., content synchronization) and simultaneously transmit downlink or receive uplink, these AMs are one cell. will operate as

For example, if beams corresponding to FA1 are grouped and operated as one cell, this may be referred to as 'BG FA1 Side B 1Site Cell'. Here, 'BG' means a beam group, 'Side B' means a beam group formed by AMs installed on the B side of the road, and '1Site' means a beam group at one G.TRX site. It can mean that it was formed by Similarly, many cells such as 'BG FA2 Side B 1Site Cell', 'BG FA3 Side B 1Site Cell' and 'BG FA4 Side B 1Site Cell' may exist simultaneously in the same space. Beams grouped for each FA may be different.

9 is a conceptual diagram for explaining a beam group when G.TRX of FIG. 6 and G.TRX of FIG. 8 are applied to both sides of a road.

Referring to FIG. 9, a case where the G.TRX described in FIG. 1 is arranged facing both sides of the road is shown. That is, the beam coverages formed by a total of 45 individual AMs mounted on the G.TRX (ie, A Side G.TRX) installed on the A side of the road and the G.TRX (ie, B Side G.TRX) installed on the B side of the road A case of using beam coverages formed by a total of 45 individual AMs mounted on .TRX) is shown.

That is, FIG. 9 discloses a method of grouping and simultaneously using all of the beam coverages described in FIGS. 6 and 8, and content synchronization can be applied to transmissions of two sites. Similarly, if beam coverages for each subband (FA1, FA2, FA3, FA4, ??) belonging to all available FAs can be operated independently, it can be assumed that each AM has beam coverage for each FA. In addition, BCs for each FA may be individually operated as in the case of FIGS. 2 and 3 .

Referring to FIG. 9, a total of 90 beams of 45 AMs of A Side G.TRX and 45 AMs of B Side G.TRX synchronize the same content to the beam coverage formed for each FA to downlink 90 AMs operate as one cell if they are simultaneously transmitted or received through uplink. For example, if beams corresponding to FA1 are grouped and operated as one cell, this may be referred to as 'BG FA1 Side A/B 2Site VO Cell'. Here, 'BG' means a beam group, 'Side A/B' means a beam group formed by AMs installed on the A side and B side of the road, and '2Site' means two G. It means a beam group formed by TRX sites. In addition, 'VO (vertical overlap)' means that the beam group of A Side G.TRX and the beam group of B Side G.TRX are vertically overlapped. Similarly, many cells such as 'BG FA2 Side A/B 2Site VO Cell', 'BG FA3 Side A/B 2Site VO Cell' and 'BG FA4 Side A/B 2Site VO Cell' can exist simultaneously in the same space. Beams grouped for each FA may be different.

10 is a conceptual diagram for explaining a first example of beam groups formed by antenna modules of four antenna assemblies according to an embodiment of the present invention.

Referring to FIG. 10 , a concept in which two G.TRXs exist on the A side and the B side of the road and form one cell can be explained.

Specifically, two beam groups formed by two G.TRXs located on the A side of the road and two beam groups formed by two G.TRXs located on the B side of the road are simultaneously used. Thus, one cell may be formed. 20 (= 5x4) AMs that are part of 45 AMs of G.TRX installed on one side (eg, left) of side A of the road, G.TRX installed on the other side (eg, right) of side A of the road 25 (= 5x5) AMs that are part of the 45 AMs of G.TRX, 20 (= 5x4) AMs that are part of the 45 AMs of G.TRX installed on one side (e.g., left) of the B side of the road, and beam coverages formed by 25 (= 5x5) AMs (ie, a total of 90 beam coverages) among 45 AMs of G.TRX installed on the other side (eg, right side) of side B of the road. One cell can be formed using

As such, beam groups formed from the four G.TRX sites may be vertically overlapped (VO: Vertical Overlap) and horizontally non-overlap (HNO) to create one cell.

FIG. 11 is a conceptual diagram for explaining vertical overlapping and horizontal non-overlapping of beam groups of FIG. 10 .

Referring to FIG. 11, as illustrated in FIG. 10, a beam coverage group formed by using two G.TRXs installed on the side A of the road and some AMs of the two G.TRXs installed on the side B of the road is vertically The concept of forming cells in a manner of overlapping (VO) but not overlapping horizontally (HNO) is shown.

in other words. The beam coverage groups of the left G.TRX installed on the A side of the road and the left G.TRX installed on the B side of the road are vertically overlapped, and the right G.TRX installed on the A side of the road and the right G.TRX installed on the B side of the road The beam coverage groups of .TRX are vertically overlapped. On the other hand, the beam coverage groups formed by the left G.TRX and right G.TRX installed on the A side of the road are horizontally non-overlapping, and the beam formed by the left G.TRX and right G.TRX installed on the B side of the road. Coverage groups are horizontally non-overlapping. For all beam coverages grouped into one cell, content synchronization is performed on the downlink, and uplink can be received at several sites (2 to 4 sites).

Referring to FIG. 11, for example, if beams corresponding to FA1 are grouped and operated as one cell, this may be referred to as 'BG FA1 Side A/B 4Site VO/HNO Cell'. Here, 'BG' means a beam group, 'Side A/B' means a beam group formed by AMs installed on the A side and B side of the road, and '4Site' means a beam group formed by four G. It means a beam group formed by TRX sites. In addition, 'VO (vertical overlap)' means that the A Side G.TRX beam group and B Side G.TRX beam group vertically overlap, and 'HNO (horizontally non-overlap)' means that the left and right G.TRX beam groups overlap. This means that the beam groups of .TRXs are horizontally non-overlapping. Similarly, many cells such as 'BG FA2 Side A/B 4Site VO/HNO Cell', 'BG FA3 Side A/B 4Site VO/HNO Cell' and 'BG FA4 Side A/B 4Site VO/HNO Cell' can exist simultaneously. Beams grouped for each FA may be different.

12 is a conceptual diagram for explaining a second example of beam groups formed by antenna modules of four antenna assemblies according to an embodiment of the present invention.

Referring to FIG. 12 , a concept in which two G.TRXs exist on the A side and the B side of the road and form one cell can be explained.

Specifically, two beam groups formed by two G.TRXs located on the A side of the road and two beam groups formed by two G.TRXs located on the B side of the road are simultaneously used. Thus, one cell may be formed. 20 (= 5x4) AMs that are part of 45 AMs of G.TRX installed on one side (eg, left) of side A of the road, G.TRX installed on the other side (eg, right) of side A of the road 25 (= 5x5) AMs that are part of the 45 AMs of G.TRX, 20 (= 5x4) AMs that are part of the 45 AMs of G.TRX installed on one side (e.g., left) of the B side of the road, and beam coverages formed by 25 (= 5x5) AMs (ie, a total of 90 beam coverages) among 45 AMs of G.TRX installed on the other side (eg, right side) of side B of the road. One cell can be formed using

In this way, beam coverage groups formed at the four sites may be vertically overlapped (VO: Vertical Overlap) and horizontally overlapped (HO: Horizontal Overlap) to create one cell.

13 is a conceptual diagram for explaining vertical overlapping and horizontal overlapping of beam groups of FIG. 12 .

Referring to FIG. 13, as illustrated in FIG. 12, a beam coverage group formed using two G.TRXs installed on the side A of the road and some AMs of the two G.TRXs installed on the side B of the road is vertically The concept of forming cells in a method of overlapping (VO) and horizontally overlapping (HO) is shown.

That is, the beam coverage groups of the left G.TRX installed on the A side of the road and the left G.TRX installed on the B side of the road are vertically overlapped, and the right G.TRX installed on the A side of the road and the B side of the road are vertically overlapped. The beam coverage groups of the right G.TRX are vertically overlapped. In addition, the beam coverage groups formed by the left G.TRX and right G.TRX installed on the A side of the road overlap horizontally, and the beam coverage groups formed by the left G.TRX and right G.TRX installed on the B side of the road Groups are nested horizontally. For all beam coverages grouped into one cell, content synchronization is performed on the downlink, and the uplink can be received at several sites (2 to 4 sites).

Referring to FIG. 13, for example, if beams corresponding to FA1 are grouped and operated as one cell, this may be referred to as 'BG FA1 Side A/B 4Site VO/HO Cell'. Here, 'BG' means a beam group, 'Side A/B' means a beam group formed by AMs installed on the A side and B side of the road, and '4Site' means a beam group formed by four G. It means a beam group formed by TRX sites. In addition, 'VO (vertical overlap)' means that the A Side G.TRX beam group and B Side G.TRX beam group vertically overlap, and 'HO (Horizontal overlap)' means that the left and right G.TRX beam groups overlap. This means that the beam groups of are horizontally overlapped. Similarly, many cells such as 'BG FA2 Side A/B 4Site VO/HO Cell', 'BG FA3 Side A/B 4Site VO/HO Cell' and 'BG FA4 Side A/B 4Site VO/HO Cell' can exist simultaneously. Beams grouped for each FA may be different.

14 is a conceptual diagram for explaining a first example of beam groups formed by antenna modules of two antenna assemblies according to an embodiment of the present invention.

Referring to FIG. 14, a concept in which one G.TRX exists on the A side and the B side of the road and forms one cell can be explained.

Specifically, one cell is formed by simultaneously using one beam group formed by G.TRX located on the A Side of the road and one beam group formed by G.TRX located on the B Side of the road. can be formed. Of the 45 AMs of G.TRX installed on one side (e.g., left side) of side A of the road, 20 (= 5x4) AMs, which are part, and G.TRX installed on the other side (e.g., right) of side B of the road One cell may be formed using all beam coverages formed by 25 (= 5x5) AMs (ie, a total of 45 beam coverages) among the 45 AMs.

In this way, beam coverage groups formed at two sites may be vertically non-overlapped (VNO) and horizontally non-overlap (HNO) to generate one cell.

FIG. 15 is a conceptual diagram for explaining vertical non-overlapping and horizontal non-overlapping of the beam groups of FIG. 14 .

Referring to FIG. 15, as illustrated in FIG. 14, a beam coverage group formed using G.TRX installed on the A side of the road and some AMs of the G.TRX installed on the B side of the road is vertically non-overlapping ( VNO) and also horizontally non-overlapping (HNO) concept of forming a cell is shown.

That is, the beam coverage groups of the left G.TRX installed on the A side of the road and the right G.TRX installed on the B side of the road are vertically non-overlapping and horizontally non-overlapping as well. The sites of G.TRX placed on both sides of the A/B side are not facing each other. in other words. Two beam coverage groups of G.TRX installed on the A side of the road and G.TRX installed on the B side of the road can be arranged in the form of VNO and HNO. For all beam coverages grouped into one cell, content synchronization is performed on the downlink, and uplink can be received at several sites (two).

Referring to FIG. 15, for example, if beams corresponding to FA1 are grouped and operated as one cell, this may be referred to as 'BG FA1 Side A/B 2Site VNO/HNO Cell'. Here, 'BG' means a beam group, 'Side A/B' means a beam group formed by AMs installed on the A side and B side of the road, and '2Site' means a beam group formed by 4 G. It means a beam group formed by TRX sites. In addition, 'VNO (vertical non-overlap)' means that the beam group of A Side G.TRX and the beam group of B Side G.TRX are vertically non-overlapped, and 'HNO (Horizontal non-overlap)' means that the left and right This means that the beam groups of G.TRXs on the right side are horizontally non-overlapped. Similarly, many cells such as 'BG FA2 Side A/B 2Site VNO/HNO Cell', 'BG FA3 Side A/B 2Site VNO/HNO Cell' and 'BG FA4 Side A/B 2Site VNO/HNO Cell' are located in the same space. can exist simultaneously. Beams grouped for each FA may be different.

16 is a conceptual diagram for explaining a second example of beam groups formed by antenna modules of two antenna assemblies according to an embodiment of the present invention.

Referring to FIG. 16 , a concept in which one G.TRX exists on the A side and the B side of the road and forms one cell can be explained.

Specifically, one cell is formed by simultaneously using one beam group formed by G.TRX located on the A Side of the road and one beam group formed by G.TRX located on the B Side of the road. can be formed. Of the 45 AMs of G.TRX installed on one side (e.g., left side) of side A of the road, 20 (= 5x4) AMs, which are part, and G.TRX installed on the other side (e.g., right) of side B of the road One cell may be formed using all beam coverages formed by 25 (= 5x5) AMs (ie, a total of 45 beam coverages) among the 45 AMs.

In this way, one cell may be created by vertically overlapping (VO) and horizontally overlapping (HO) the beam coverage groups formed at the two sites.

FIG. 17 is a conceptual diagram for explaining vertical overlap and horizontal overlap of the beam groups of FIG. 16 .

Referring to FIG. 17, as illustrated in FIG. 16, beam coverage groups formed using G.TRX installed on the A side of the road and some AMs of the G.TRX installed on the B side of the road are vertically overlapped (VO ) and the concept of forming a cell in a horizontally overlapping manner (HNO) is shown.

That is, the beam coverage groups of the left G.TRX installed on the A side of the road and the right G.TRX installed on the B side of the road overlap vertically and horizontally. The sites of G.TRX placed on both sides of the A/B side are not facing each other. in other words. Two beam coverage groups of G.TRX installed on the A side of the road and G.TRX installed on the B side of the road can be arranged in the form of VO and HO. For all beam coverages grouped into one cell, content synchronization is performed on the downlink, and uplink can be received at several sites (two).

Referring to FIG. 17, for example, if beams corresponding to FA1 are grouped and operated as one cell, this may be referred to as 'BG FA1 Side A/B 2Site VO/HO Cell'. Here, 'BG' means a beam group, 'Side A/B' means a beam group formed by AMs installed on the A side and B side of the road, and '2Site' means a beam group formed by 4 G. It means a beam group formed by TRX sites. In addition, 'VO (vertical overlap)' means that the A Side G.TRX beam group and B Side G.TRX beam group are vertically overlapped, and 'HO (Horizontal overlap)' means the left and right G.TRX beam groups. This means that the beam groups of are horizontally overlapped. Similarly, many cells such as 'BG FA2 Side A/B 2Site VO/HO Cell', 'BG FA3 Side A/B 2Site VO/HO Cell' and 'BG FA4 Side A/B 2Site VO/HO Cell' can exist simultaneously. Beams grouped for each FA may be different.

Mounting form of antenna assembly

18 is a conceptual diagram for explaining installation forms of an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 18 , installation behaviors of antenna assemblies disposed around a moving path of a moving object are illustrated. First, CASE A is a case where G.TRX is installed only on one side of the road (eg, B Side) at the same height in terms of blocking radio waves, and CASE B is a case where two G.TRX are installed at the same height on both sides of the road. Shows the installation case. In the case of CASE C, G.TRX is installed only on one side (eg, B side) of the road, but G.TRX is installed at a higher position than CASE A and CASB B.

Assuming a road with a total of 4 lanes (2 upward lanes, 2 downward lanes), when a car/bus/truck exists in the same cross section, communication between a passenger car (1801) and G.TRX (1803) is performed in CASE A. It can be blocked (blocked) by 1802. However, in CASE B, the car 1801 is blocked from communicating with the B Side G.TRX 1803 by the truck 1802, but can secure a communication link with the A Side G.TRX 1804. Meanwhile, the bus 1802 and the truck 1805 secure two communication links with the A Side G.TRX 1804 and the B Side G.TRX 1803, respectively, to increase the signal-to-noise ratio (SNR). Finally, in CASE C, even if the G.TRX 1803 is installed only on one side of the road (eg, B Side), a communication link for the car 1801 can be secured.

Cells can be formed without blocking using the various cell formation methods mentioned above, and even increasing the installation height of G.TRX can be considered.

19 is a conceptual diagram for explaining blocking according to a road width in an installation form of an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 19 , even if the installation height of G.TRX is twice as high as that of CASE A/B in FIG. 18 , blocking may occur again as the width of the road widens.

For example, assuming a road with a total of 10 lanes (5 upward lanes and 5 downward lanes), when vehicles such as cars 1811 and 1812, trucks 1814, and buses 1813 exist in the same cross section, upward The passenger car (1812) in the second lane is blocked from communicating with the G.TRX (1815) installed on the B side due to the bus (1813) in the first lane upward (blocking A), and if a passenger car exists in the first lane downward, the second lane Communication with the G.TRX 1815 installed on the B Side may be blocked due to the truck 1814 in the B Side (Blocking B).

That is, even if the antenna assembly is installed only on one side of the road, blocking may or may not occur depending on the width of the road and the operating conditions of the vehicle at a specific point in time. If blocking occurs, it may be considered to install G.TRX at a higher installation location or to additionally install G.TRX on the opposite side of the road. Therefore, in order to ensure no blocking under any driving conditions, CAPEX (capital expenditure) and OPEX (operating expenditure) were calculated by considering the various cell formation methods mentioned above, the nature of the backbone wired network installed on the road, and the installation height of G.TRX. You can choose an arrangement that minimizes .

Road environment and installation environment

20 to 22 are conceptual views for explaining various road environments to which installation forms of antenna assemblies according to an embodiment of the present invention are applied.

Referring to FIG. 20 , various road environments in which a road width is changed, such as lane addition (CASE A), lane divergence (CASE B), lane reduction (CASE C), and lane merging (CASE D), may exist. Therefore, it means that the various cell formation methods mentioned above should be considered and applied in these four cases (CASE A, CASE B, CASE C, and CASE D).

Referring to FIG. 21 , as shown in CASE A, there may be cases where eco-roads, tunnels, and noise barriers are installed, and as shown in CASE B, there may be cases where roads intersect three-dimensionally.

In the case of CASE A, since blocking is expected, G.TRXs can be installed inside eco-roads, inside tunnels, or inside noise barriers in consideration of the various cell formation methods mentioned above. In the case of CASE B, frequency separation may be considered so that interference between cells used in the upper road and cells used in the lower road does not mutually affect each other.

Referring to FIG. 22 , depending on whether the road environment is uphill or downhill, it should be considered in cell formation that coverage and blocking situations may vary even in the same vehicle driving situation. In addition, only straight roads have been considered so far, but since coverage and blocking conditions may vary depending on the curvature of a curved road, these environments should also be considered in cell formation.

23 to 26 are conceptual diagrams for explaining installation environments of an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 23 , a road environment in which no streetlights exist is shown. In this case, in order to install the G.TRX according to an embodiment of the present invention, a pole must be installed, and thus additional costs corresponding to CAPEX and OPEX must be considered in the cell formation method.

Referring to FIG. 24 , a road environment in which streetlights exist at equal intervals on one side (eg, side A) of the road is shown. Basically, in such a road environment, the height of the street lights and the street lights are supplied with electricity, so G.TRX can be easily installed by simply connecting the communication infrastructure. Accordingly, various cell formation methods may be applied in consideration of cost reduction in terms of CAPEX/OPEX.

Referring to FIG. 25 , a road environment in which streetlights exist at equal intervals on both sides of the road (eg, A side A and B side) is shown. In this case, the street lights on both sides may be installed face-to-face at equal intervals. Basically, in such a road environment, the height of the street lights and the street lights are supplied with electricity, so G.TRX can be easily installed by simply connecting the communication infrastructure. Accordingly, various cell formation methods may be applied in consideration of cost reduction in terms of CAPEX/OPEX.

Referring to FIG. 26 , a road environment in which streetlights exist at equal intervals on both sides (eg, A side and B side) of the road is shown. However, unlike the road environment of FIG. 25, streetlights on both sides may be installed in a zigzag form at regular intervals. Basically, in such a road environment, the height of the street lights and the street lights are supplied with electricity, so G.TRX can be easily installed by simply connecting the communication infrastructure. Accordingly, various cell formation methods may be applied in consideration of cost reduction in terms of CAPEX/OPEX.

DC/DU mapping of antenna assembly

27A and 27B are conceptual diagrams for explaining a first example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 27A, when a link is provided by G.TRX (ie, G.TRX-B) installed on one side (eg, B side) of a road, blocking in an assumed vehicle operating environment is shown. there is. For example, blocking A, B, C, D and E may occur by trucks 2701 and 2702 and buses 2703 and 2704.

Referring to FIG. 27B, a beam coverage group formed by G.TRX-B and a base station are shown. In this case, G.TRX-B corresponds to a kind of distributed unit (DU), and the base station may be mapped to a central unit (CU). That is, all 45 AMs belonging to one G.TRX (ie, G.TRX-B) can belong to and be operated by one base station.

28a and 28b are conceptual diagrams for explaining a second example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 28A, 45 AMs belonging to one G.TRX (ie, G.TRX-B) may be divided into two regions. 25 AMs from the first to fifth columns may be in charge of the beam coverage group A area, and 20 AMs from the sixth to ninth columns may be in charge of the beam coverage group B area.

Referring to FIG. 28B, the beam coverage group A area may belong to base station 1 (BS1) and be managed, and the beam coverage group B area may belong to base station 2 (BS2) and be managed. In this case, base station 1 and base station 2 are logical concepts within the CU and may be operated in different FAs. Also, areas covered by base station 1 and base station 2 may change over time.

29A and 29B are conceptual diagrams for explaining a third example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 29A, unlike the case of FIG. 27A, two G.TRXs (ie, G.TRX-A and G.TRX-B) installed on both sides of the road (ie, side A and side B) A case in which a link is provided by is shown. Unlike the case of FIG. 27A, blocking A, B, D, and E excluding blocking C among blocking A, B, C, D, and E by trucks 2701 and 2702 and buses 2703 and 2704 are G.TRX It can be removed by -A.

Referring to FIG. 29B, a beam coverage group formed by G.TRX-A and a beam coverage group formed by G.TRX-B may be vertically overlapped to form one cell, and the formed cell is formed in one base station. can be managed Each of G.TRX-A and G.TRX-B corresponds to a kind of distributed unit (DU), and a base station may be mapped to a central unit (CU). That is, all 90 AMs belonging to two G.TRXs can be operated by belonging to one base station.

30A to 30C are conceptual diagrams for explaining a fourth example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 30A, in the same environment as shown in FIGS. 27A and 28A, two G.TRXs (ie, G.TRX-A2 and G.TRX) installed on one side (eg, A side) of a road -A3) and a case in which a link is provided by two G.TRXs (ie, G.TRX-B2 and G.TRX-B3) installed on the other side (eg, B side) of the road. In this case, blocking C, which was not resolved in FIG. 29A by using four G.TRXs, can be removed by the link provided by G.TRX-A2.

Referring to FIG. 30B , a beam coverage group formed by G.TRX-A2 and a beam coverage group formed by G.TRX-B2 may be vertically overlapped (VO). Similarly, the beam coverage group formed by G.TRX-A3 and the beam coverage group formed by G.TRX-A4 may be vertically overlapped (VO). Meanwhile, the two beam coverage groups of G.TRX-A2 and G.TRX-A3 are arranged in a horizontally non-overlapping form (HNO), and the two beam coverage groups of G.TRX-B2 and G.TRX-B3 They may also be arranged in a horizontally non-overlapping form (HNO). One cell is formed by a total of four beam coverage groups, and the formed cell can be managed by one base station. Each of G.TRX-A2, G.TRX-A3, G.TRX-B2, and G.TRX-B3 corresponds to a kind of distributed unit (DU), and a base station may be mapped to a central unit (CU). That is, all 180 AMs belonging to four G.TRXs can be operated by belonging to one base station.

Referring to FIG. 30C, a partial beam coverage group formed by G.TRX-A2 (eg, a beam coverage group formed by 20 AMs among a total of 45 AMs) and a partial beam coverage group formed by G.TRX-B2 (eg, a beam coverage group formed by 20 AMs among a total of 45 AMs) , a beam coverage group formed by 20 AMs among a total of 45 AMs) may be arranged in a vertically overlapping form (VO). Similarly, some beam coverage groups formed by G.TRX-A3 (eg, beam coverage groups formed by 25 AMs out of a total of 45 AMs) and G.TRX-B3 formed by some beam coverage groups (eg, a total of 45 AMs) A beam coverage group formed by 25 AMs among AMs) may be arranged in a vertically overlapping form (VO). In addition, some beam coverage groups of G.TRX-A2 and G.TRX-A3 are arranged in a horizontally overlapping form (HO), and some beam coverage groups of G.TRX-B2 and G.TRX-B3 are horizontally overlapped. It can be arranged in an overlapping form (HO). That is, a total of four partial beam coverage groups are formed as one cell, and the formed cell can be managed by one base station. Each of G.TRX-A2, G.TRX-A3, G.TRX-B2, and G.TRX-B3 corresponds to a kind of distributed unit (DU), and a base station may be mapped to a central unit (CU). That is, 90 AMs, which are some of AMs belonging to four G.TRXs, can be operated by belonging to one base station.

31A and 31B are conceptual diagrams for explaining a fifth example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 31A, compared to the case shown in FIG. 30B, a case in which the cell area is extended by adding G.TRX-A1 and G.TRX-B1 is illustrated. For example, a total of three G.TRXs may be installed on one side of the road (eg, side A), and a total of three G.TRXs may be installed on the other side of the road (eg, side B). In this case, one cell is formed by a total of 270 (=45*6) AMs, and the formed cell can be managed by one logical base station. Compared to the case shown in FIG. 30B, since the cell area is expanded by additionally injecting two G.TRXs on both sides of the road, this can be defined as the concept of 'continuous connection (CC)'. can In this way, the cell area shown in FIG. 30B can be expanded through continuous connection.

Referring to FIG. 31B, compared to the case shown in FIG. 30C, a case in which the cell area is extended by adding some AMs of G.TRX-A1 and G.TRX-B1 is illustrated. For example, a total of three G.TRXs may be installed on one side of the road (eg, side A), and a total of three G.TRXs may be installed on the other side of the road (eg, side B). In this case, a total of 180 AMs (25 AMs from G.TRX-A1, 25 AMs from G.TRX-B1, 45 AMs from G.TRX-A2, 45 AMs from G.TRX-B2) AMs, 20 AMs from G.TRX-A3, and 20 AMs from G.TRX-B3) form one cell, and the formed cell can be managed by one logical base station. Compared to the case shown in FIG. 30C, since the cell area is expanded by additionally injecting two G.TRXs on both sides of the road, this can be defined as a concept of 'continuous connection (CC)'. In this way, the cell area can be expanded by extending the beam coverage area shown in FIG. 30C through continuous connection.

32a and 32b are conceptual diagrams for explaining a sixth example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 32A, some beam coverage areas of G.TRX-A1 and G.TRX-B1 may be extended from the central point of G.TRX-A1 to the central point of G.TRX-A3. In this case, the number of AMs of each G.TRX may be extended through beam width extension without changing, or the coverage may be extended by additionally utilizing AMs. In addition, as in the method described with reference to FIG. 4, coverage may be performed through power and weight/phase control. Similarly, the entire beam coverage areas of G.TRX-A2 and G.TRX-B2 can be extended from the center point of G.TRX-A1 to the center point of G.TRX-A3. In this case, the number of AMs of each G.TRX may be extended through beam width extension without changing, or the coverage may be extended by additionally utilizing AMs. In addition, as in the method described with reference to FIG. 4, coverage may be performed through power and weight/phase control. Similarly, some beam coverage areas of G.TRX-A3 and G.TRX-B3 can be extended from the center point of G.TRX-A1 to the center point of G.TRX-A3. In this case, the number of AMs of each G.TRX may be extended through beam width extension without changing, or the coverage may be extended by additionally utilizing AMs. In addition, as in the method described with reference to FIG. 4, coverage may be performed through power and weight/phase control. In this case, beam coverage groups formed by 6 G.TRXs form one cell (eg, one cell corresponding to FA1) and can be managed by one logical base station. Referring to FIG. 32B, shapes of beam coverage groups formed by each of six G.TRXs are shown.

Meanwhile, in the cases described above, it is assumed that the G.TRXs are installed on both sides of the road in a form facing each other, but in the following, it is assumed that the G.TRXs are installed on both sides of the road in a zigzag form.

33A and 33B are conceptual diagrams for explaining a seventh example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 33A, two G.TRXs (ie, G.TRX-A2 and G.TRX-A3) installed on one side of the road (eg, A side) and the other side of the road (eg, B side) One G.TRX (ie, G.TRX-B2) installed in forms one cell (eg, one cell corresponding to FA1) and is managed by one logical base station. In this case, partial beam coverage areas of G.TRX-A2 and G.TRX-A3 and the entire beam coverage area of G.TRX-B2 may be combined and managed and operated as one cell. Referring to FIG. 33B, shapes of beam coverage groups formed by each of the three G.TRXs are shown.

34a and 34b are conceptual diagrams for explaining an eighth example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.

Referring to FIG. 34A, two G.TRXs (ie, G.TRX-A2 and G.TRX-A3) installed on one side (eg, A side) of the road and the other side (eg, B side) of the road Two G.TRXs (ie, G.TRX-B2 and G.TRX-B3) installed in form one cell (eg, one cell corresponding to FA1) and are managed by one logical base station. case is shown. In this case, partial beam coverage areas of G.TRX-A3 and G.TRX-B1 and all beam coverage areas of G.TRX-A2 and G.TRX-B2 may be combined and managed and operated as one cell. Referring to FIG. 34B, shapes of beam coverage groups formed by each of the four G.TRXs are shown.

35A and 35B are conceptual diagrams for explaining a ninth example of DU-CU mapping to an antenna assembly according to an embodiment of the present invention.

35A and 35B show a method of extending a cell area by additionally connecting G.TRXs to both sides of a road, similar to the continuous connection (CC) described above.

Referring to FIG. 35A, G.TRX-A1 and G.TRX-B1 are additionally installed on both sides of the road, and G.TRX-A2, G.TRX-A3, G.TRX-B1, and G.TRX- All of the beam coverage areas of B2 and some of the beam coverage areas of G.TRX-A1 and G.TRX-B3 can be combined and managed and operated as one cell. Referring to FIG. 35B, shapes of beam coverage groups formed by each of six G.TRXs are shown.

cell planning method

36 is a conceptual diagram for explaining a cell planning method for an ultra-high frequency access network according to an embodiment of the present invention.

In cell planning for an ultra-high frequency access network, cell planning is required to remove a blocking problem, which is a disadvantage of ultra-high frequency, in consideration of road environment, vehicle environment, antenna characteristics, and infrastructure characteristics.

For example, in the case of a road environment, basic information on road width and number of lanes, reduction/addition of lanes, divergence/merging of lanes, open environments and temporarily closed environments such as tunnels/ecological roads/blockades, various Environments where roads intersect up and down, uphill/downhill roads, straight/curved roads, existing infrastructure arrangements for both without and with streetlights, and whether or not they are utilized can be considered.

When the road environment, which is a target of cell planning, is determined, various vehicle environments may be considered. In the case of a vehicle environment, it may be defined as a characteristic of a vehicle to be operated on a road environment that is a target of cell planning. For example, the characteristics of the vehicle to be driven may include information on the overall height/length/width of the vehicle and the location of an antenna on the vehicle. In addition, the vehicle environment includes a driving environment of the vehicle. For example, the driving environment of a vehicle may be defined by hundreds of vehicle operating environment models of how many different vehicles are distributed and at various speeds. Such a vehicle environment model may be created through video shooting in a similar road environment.

When the road environment, which is the target of cell planning, is determined and the vehicle operating environment model is created, the antenna characteristics of the antenna assembly to be installed in the G.TRX are considered. The antenna characteristics are the characteristics of the antenna elements (AE) constituting the antenna assembly, the number of included AMs, weight and phase control, whether the antenna assembly is to be mounted on the G.TRX or the antenna assembly to be mounted on a vehicle. It may include whether or not, characteristics of AMs constituting the antenna assembly, installation height of the antenna assembly, installation interval of the antenna assembly, whether a pole for installation of the antenna assembly should be installed, whether existing street lights are available, etc. .

Meanwhile, the infrastructure characteristics may include a communication infrastructure installed at the time of road construction, a CU placement position when using the installed communication infrastructure, and the number of logical base stations capable of being processed by the CU.

That is, when the road environment is determined, fixed cell planning may be performed by selecting one of the various methods described above in consideration of antenna characteristics. In addition, it is possible to determine whether preset criteria are satisfied by simulating a plurality of vehicle operating environment models generated by reflecting the vehicle environment. For example, a preset criterion may be set as follows.

(First criterion) Data rate requirements. For example, is it possible to provide a speed of 1 Gbps per vehicle?

(Second decision criterion) Blockage occurrence rate. The blockage occurrence rate may be defined as a probability that a vehicle located in a unit area (eg, 100 m ² ) of a road environment that is a target of cell planning is in a blockage state for a certain period of time (eg, 1 second). Although it is preferable to set the target blockage rate to 0%, it can be set in consideration of the above-described various environments and CAPEX/OPEX.

If the above-described two criteria are not satisfied, antenna characteristics such as installation height and installation distance of the antenna assembly may be adjusted or cell arrangement may be reset until the two criteria are satisfied. When the above-described two criteria are satisfied, it is possible to repeat the determination as to whether the two criteria are satisfied by applying another vehicle operating environment model. In this way, by repeating the determination of whether the criterion is satisfied, adjusting the antenna characteristics, and resetting the cell arrangement method, a plurality of cell arrangement environments satisfying all vehicle operating environment models as simulation targets may be determined. When several fixed cell deployment environments are determined, if a cell deployment environment having the lowest TCO is selected among them, the most optimal cell planning can be completed.

cell sliding

Hereinafter, assuming a situation in which 10 G.TRXs are installed facing each other on both sides of the road in a road environment of 6 lanes (3 upward and 3 downward), the cell generated by the G-TRX is G. A process of sliding through ON/OFF control of AMs constituting .TRXs will be described.

37 to 41 are conceptual views for explaining sliding of a cell formed by antenna assemblies according to an embodiment of the present invention.

37 to 41 correspond to five viewpoints T1, T2, T3, T4, and T5, respectively. For example, FIG. 37 shows a cell formed through ON/OFF control of AMs at time T1, FIG. 38 shows a cell formed through ON/OFF control of AMs at time T2, and FIG. shows a cell formed through ON/OFF control of AMs at time T3, FIG. 40 shows a cell formed through ON/OFF control of AMs at time T4, and FIG. 41 shows cells formed through ON/OFF control of AMs at time T5. A cell formed through ON/OFF control of AMs is shown.

Referring to FIG. 37, CELL A corresponding to FA1 for three downlinks includes a partial beam coverage area formed by 27 AMs in rows 1 to 3 of G.TRX-A1 and 3 to 3 AMs of G.TRX-B1. It can be formed at time T1 by a partial beam coverage area formed by 27 AMs in 5 rows.

Referring to FIG. 38, CELL A corresponding to FA1 for three downlinks is a partial beam coverage area formed by 18 AMs in columns 4 to 9 of rows 1 to 3 of G.TRX-A1, G.TRX-A1. Partial beam coverage area formed by 9 AMs corresponding to columns 1 to 3 of rows 1 to 3 of A2, part formed by 18 AMs of columns 4 to 9 of rows 3 to 5 of G.TRX-B1 It can be formed at time T2 by a beam coverage area and a partial beam coverage area formed by nine AMs in columns 1 to 3 of rows 3 to 5 of G.TRX-B2.

Referring to FIG. 39, CELL A corresponding to FA1 for three downlinks is a partial beam coverage area formed by nine AMs in rows 1 to 3 and columns 7 to 9 of G.TRX-A1, G.TRX-A1. Partial beam coverage area formed by 18 AMs in columns 1 to 6 of rows 1 to 3 of A2, part formed by 9 AMs corresponding to columns 7 to 9 in rows 3 to 5 of G.TRX-B1 It can be formed at time T3 by a beam coverage area, and a partial beam coverage area formed by 18 AMs in columns 1 to 6 of rows 3 to 5 of G.TRX-B2.

Referring to FIG. 40, a partial beam coverage area in which CELL A corresponding to FA1 for three downlinks is formed by 27 AMs in columns 1 to 9 of rows 1 to 3 of G.TRX-A2, G.TRX-A2. A partial beam coverage area formed by 27 AM 27s in rows 1 to 9 of rows 3 to 5 of B1 may be formed at time T4.

Referring to FIG. 41, CELL A corresponding to FA1 for three downlinks is a partial beam coverage area formed by 18 AMs in columns 4 to 9 of rows 1 to 3 of G.TRX-A2, G.TRX-A2. Partial beam coverage area formed by 9 AMs corresponding to columns 1 to 3 of rows 1 to 3 of A3, part formed by 18 AMs in columns 4 to 9 of rows 3 to 5 of G.TRX-B2 It can be formed at time T5 by a beam coverage area, and a partial beam coverage area formed by nine AMs in columns 1 to 3 of rows 3 to 5 of G.TRX-B3.

In conclusion, referring to FIGS. 37 to 41 , it can be confirmed that the FA1 CELL A is not fixed and is moving according to the passage of time (from time point T1 to time point T5). That is, in this way, it is possible to move cells generated through the various types of cell forming methods described above.

42 is a conceptual diagram for explaining mobile cell operation according to an embodiment of the present invention.

Referring to FIG. 42, available frequency bands may be divided into various subbands such as FA1, FA2, FA3, FA4, FA5, FA6, and FA7. A cell exists in each layer of the layers (ie, L1 to L5), and the cell moves according to the method described above with reference to FIGS. 37 to 41 . Here, the layer may be determined according to the movement speed of the corresponding cell. The lower the layer, the faster the corresponding cell moves, and the higher the layer, the slower the cell moves. In this case, L5 means a fixed cell in which the cell does not move. It can be assumed that the movement speed of these cells is A m/s in L1, B m/s in L2, C m/s in L3, D m/s in L4, and 0 m/s (no movement) in L5. . These layers (fast A L1 layer, fast B L2 layer, medium-speed C L3 layer, medium-speed D L4 layer, and fixed L5 layer) may be classified into smaller or larger numbers. Meanwhile, FA1 is used by default for the L1 layer, FA2 is used by default for the L2 layer, FA3 is used by default for the L3 layer, FA4 is used by default for the L4 layer, and FA5 is used by default for the L5 layer. can

In FIG. 42, the faster the cell moves, the larger the cell coverage area, and the slower the cell moves, the smaller the cell coverage area, so that high-speed vehicles can stably use the same resources as much as possible. are doing

In the L1 layer, CELL L1A-FA1 and CELL L1B-FA1 are set in succession, and cells are moving to the right at A m/s. In the L2 layer, CELL L2A-FA2, CELL L2B-FA2, CELL L2C-FA2, and CELL L2D-FA2 are set in succession, and the cells are moving to the right at B m/s. In the L3 layer, CELL L3A-FA3, CELL L3B-FA3, CELL L3C-FA3, CELL L3D-FA3, and CELL L3E-FA3 are set in succession, and the cells are moving to the right at C m/s. The L4 layer includes: CELL L4A-FA4, CELL L4B-FA4, CELL L4C-FA4, CELL L4D-FA4, CELL L4E-FA4, CELL L4F-FA4, CELL L4G-FA4, CELL L4H-FA4, CELL L4I-FA4, CELL L4J-FA4 are set consecutively, and the cells are moving to the right at D m/s. Meanwhile, in the L5 layer, a total of 22 cells from CELL L5A-FA5 to CELL L5S-FA5 may be fixedly configured.

In the mobile cell environment for each layer shown in FIG. 42 , if the first vehicle 4201 is stopped at a point 4211 on the road due to a breakdown or the like, the first vehicle 4201 is transferred to CELL L5Q-FA5 belonging to layer L5. can be connected If the second vehicle 4202 is traveling at a point 4212 on the road at a speed of D m/s, the second vehicle 4202 may connect to CELL L4G-FA4 belonging to layer L4. If the third vehicle 4203 is traveling at a point 4213 on the road at a speed of C m/s, the third vehicle 4203 may connect to CELL L3B-FA3 belonging to layer L3. If the fourth vehicle 4204 is traveling at a point 4214 on the road at a speed of A m/s, the fourth vehicle 4204 may connect to CELL L1A-FA1 belonging to layer L1. That is, a vehicle with a speed corresponding to the speed set for each layer can be connected to a cell of each layer. For example, a vehicle traveling at a speed within a predetermined range from a speed corresponding to a speed set for each layer may be connected to a cell of each layer. For example, when C=30 m/s, a vehicle with a speed of 25 m/s to 35 m/s can be connected to a cell of layer L3. The predetermined range may be set variably.

On the other hand, when the speed of the vehicle is changed, that is, when the speed of the second vehicle 4202 traveling at a speed of D m/s is changed to C m/s, the connected cell of the second vehicle 4202 is hierarchical. A cell of L2 may be changed to a cell of layer L3. That is, the connected layer of each vehicle may be changed according to the current driving speed of each vehicle.

As mentioned above, one unit subband (ie, FA) may be allocated to each layer. That is, FA1 may be allocated to layer L1, FA2 may be allocated to layer L2, FA3 may be allocated to layer L3, FA4 may be allocated to layer L4, and FA5 may be allocated to layer L5. However, when the number of vehicles to be connected to a specific cell increases, some or all of the surplus unit subbands (FA6, FA7, FA8, FA9, FA10,??) are aggregated into the cell to increase the required capacity. can support

43 is a conceptual diagram for explaining a support topology for mobile cell operation according to an embodiment of the present invention.

Referring to FIG. 43 , a topology supported for the mobile cell operating method for each layer of FIG. 42 is shown. For example, one CU 4310 has eight G.TRXs (ie, G.TRX-A1 to G.TRX-A8) installed on one side of the road (eg, A side) and the other side of the road (eg, A side). , side B) installed on 8 G.TRXs (ie, G.TRX-B1 to G.TRX-B8), a total of 16 G.TRXs can be managed. However, one CU 4310 may be configured to manage more G.TRX.

In FIG. 43, 16 G.TRXs may be connected to a CU 4310 through a P2MP/MP2P switch 4301. 43, the P2MP/MP2P switch 4301 is shown as a component included in the CU 4310, but the P2MP/MP2P switch 4301 may be located outside the CU 4310. When the P2MP/MP2P switch 4301 is included in the CU 4310, the P2MP/MP2P switch 4301 may be connected to at least one virtual base station (eg, vBS1 and vBS2) in the CU 4310.

The P2MP/MP2P switch 4301 can simultaneously transmit one downlink signal to 16 G.TRX. In addition, the P2MP/MP2P switch 4301 performs soft combining on some or all of the signals received from the 16 G.TRXs and converts the combined signal to the CU 4310 (or a virtual signal within the CU 4310). base station), or the best signal among the signals received from 16 G.TRXs can be selected and transmitted to the CU 4310 (or a virtual base station in the CU 4310).

A first virtual base station (vBS1) located in the CU 4310 may manage G.TRX-A1 to A4 and G.TRX-B1 to G.TRX-B4 at some point through the P2MP/MP2P switch 4301. . At the same time, the second virtual base station (vBS2) located in the CU 4310 manages G.TRX-A5 to A8 and G.TRX-B5 to G.TRX-B8 at some point through the P2MP/MP2P switch 4301. can In addition, according to the movement of cells described in FIG. 42, the virtual base stations can manage different G.TRXs at different times. Each virtual base station can manage different G.TRXs for each FA. That is, the target G.TRXs managed by the virtual base station may be different for each FA, and the virtual base stations may be differently realized for each FA.

44 is a conceptual diagram for explaining the advantages of the concept of a mobile cell according to an embodiment of the present invention.

In general, performance degradation (eg, data rate reduction) according to vehicle speed may be caused by factors such as the Doppler effect or handover. One of the ways to mitigate such degradation is to move the cell in response to the movement of the vehicle. By moving the cell, a virtual fixed communication environment can be obtained, such as communicating with the cell in an environment where the vehicle does not move.

Ultimately, it is best to move by forming a dedicated cell corresponding to an individual vehicle, but in this case, accurate identification of the location of each vehicle should be a premise. That is, when various types of vehicles operate at various speeds in a certain vehicle operation section and minor movements such as lane changes occur individually, it is very difficult to reflect these and maintain individual wireless links, which may increase system complexity. there is.

Accordingly, in embodiments according to the present invention, cells moving at different speeds for each layer can be generated as shown in FIG. 42 . Cells generated for each layer may have different coverage and movement speed. Through this, performance degradation of a moving vehicle may be improved by connecting the vehicle to a cell most suitable for the location and current speed of the vehicle. That is, performance degradation due to frequent handovers can be prevented by reducing the occurrence of handovers over the radio.

In addition, in the case of a lower layer (ie, a cell layer moving at a low speed), a frequency recycling rate can be increased by reducing cell coverage, and capacity per unit area can be increased.

In addition, when multiple vehicles are connected to a mobile cell of any one layer, the data rate per vehicle can be continuously maintained or the data rate per vehicle can be improved through carrier aggregation using remaining FAs.

45 is a block diagram for explaining the configuration of an apparatus capable of performing a method according to embodiments of the present invention.

45 illustrates a configuration of a cell management device (eg, a central unit (CU)) capable of performing a method according to embodiments of the present invention. Referring to FIG. 45 , a cell management device 4500 is connected to at least one processor 4510, a memory 4520, and an antenna assembly (eg, a distributed unit (DU)) or a P2MP/MP2P switch 4301 to perform communication. It may include a transmitting/receiving device 4530 that performs. In addition, the cell management device 4500 may further include an input interface device 4540, an output interface device 4550, a storage device 4560, and the like. Each component included in the cell management device 4500 may be connected by a bus 4570 to communicate with each other. However, each component included in the cell operating device 4500 may be connected through an individual interface or individual bus centered on the processor 4510 instead of the common bus 4570 . For example, the processor 4510 may be connected to at least one of the memory 4520, the transmission/reception device 4530, the input interface device 4540, the output interface device 4550, and the storage device 4560 through a dedicated interface. .

The processor 4510 may execute at least one instruction stored in at least one of the memory 4520 and the storage device 4560 . The processor 4510 may mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which methods according to embodiments of the present invention are performed. Each of the memory 4520 and the storage device 4560 may include at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory 4520 may include at least one of read only memory (ROM) and random access memory (RAM).

The at least one instruction may be configured so that the processor 4510 performs each step constituting the method according to the above-described embodiments of the present invention, and the device 4500 and the antenna assembly or the P2MP / MP2P switch ( All information exchanged between 4301 may be transmitted or received through the transceiver 4530 under the control of the processor 4510 .

Methods according to embodiments of the present invention may be implemented in the form of program instructions that can be executed by various computer means and recorded on a computer readable medium. Computer readable media may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on a computer readable medium may be specially designed and configured for the present invention or may be known and usable to those skilled in computer software.

Examples of computer readable media may include hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions may include not only machine language codes generated by a compiler but also high-level language codes that can be executed by a computer using an interpreter and the like. The hardware device described above may be configured to operate with at least one software module to perform the operations of the present invention, and vice versa.

In addition, the above-described method or device may be implemented by combining all or some of its components or functions, or may be implemented separately. Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. You will understand that it can be done.

to do

Claims (20)

A cell operating method performed by a central unit (CU) using at least one antenna assembly disposed around a moving path of a mobile body, comprising:
forming a cell for each of at least two or more layers using the at least one antenna assembly - the at least two or more layers are hierarchically configured according to speed; and
Moving the cell according to a speed set for a layer corresponding to the cell;
A moving object having a speed corresponding to a speed set for a layer corresponding to the cell is connected to the cell, and a first of the at least two or more layers corresponding to a speed higher than the speed of the second cell among the at least two or more layers. One cell has a wider coverage than that of the second cell, a first part of the at least one antenna assembly is installed on one side of the movement path, and a second part of the at least one antenna assembly is installed on one side of the movement path. At least one antenna module installed on the other side of the path, wherein each of the at least one antenna assembly is composed of M (M is a natural number of 1 or more) rows and N (N is a natural number of 1 or more) columns. Includes a set of, wherein the set of at least one antenna module belonging to each of the at least one antenna assembly operates as one cell by synchronizingly transmitting the same content for each frequency allocation (FA),
How to operate a cell. The method of claim 1,
Each of the at least one antenna assembly functions as a distributed unit (DU),
How to operate a cell. delete The method of claim 1,
Moving the cell is performed by selectively turning on/off the at least one antenna module.
How to operate a cell. The method of claim 1,
The step of moving the cell is performed by phase and weight control for the at least one antenna module,
How to operate a cell. The method of claim 1,
The at least one antenna assembly is connected to the CU through a P2MP/MP2P switch,
How to operate a cell. The method of claim 6,
The P2MP/MP2P switch simultaneously transmits one downlink signal to the at least one antenna assembly, combines signals received from the at least one antenna assembly, and transmits a combined signal to the CU, or Selectively passing signals received from the antenna assembly of to the CU,
How to operate a cell. delete The method of claim 1,
At least a portion of the beam coverage formed by the first portion of the at least one antenna assembly vertically overlaps at least a portion of the beam coverage formed by the second portion of the at least one antenna assembly.
How to operate a cell. The method of claim 1,
At least a portion of the beam coverage formed by the first portion of the at least one antenna assembly horizontally overlaps at least a portion of the beam coverage formed by the second portion of the at least one antenna assembly.
How to operate a cell. delete A cell management device for operating cells using at least one antenna assembly disposed around a moving path of a mobile body, the cell management device comprising:
at least one processor; and
A memory storing at least one instruction executed by the at least one processor,
When the at least one instruction is executed by the at least one processor, the at least one processor
forming a cell for each of at least two or more layers using the at least one antenna assembly - the at least two or more layers are hierarchically configured according to speed; and
configured to execute the step of moving the cell according to a speed set for a layer corresponding to the cell;
A moving object having a speed corresponding to a speed set for a layer corresponding to the cell is connected to the cell, and a first of the at least two or more layers corresponding to a speed higher than the speed of the second cell among the at least two or more layers. One cell has a wider coverage than that of the second cell, a first part of the at least one antenna assembly is installed on one side of the movement path, and a second part of the at least one antenna assembly is installed on one side of the movement path. At least one antenna module installed on the other side of the path, each of the at least one antenna assembly having M (M is a natural number greater than or equal to 1) rows and N (N is a natural number greater than or equal to 1) columns Includes a set of, wherein the set of the at least one antenna module belonging to each of the at least one antenna assembly operates as one cell by synchronizingly transmitting the same content for each frequency allocation (FA),
cell operator. The method of claim 12,
Each of the at least one antenna assembly functions as a distributed unit (DU), and the cell operating device functions as a central unit (CU).
cell operator. delete The method of claim 12,
The step of moving the cell is performed by selectively turning on/off the at least one antenna module or by controlling the phase and weight of the at least one antenna module.
cell operator. The method of claim 13,
The at least one antenna assembly is connected to the CU through a P2MP/MP2P switch,
cell operator. The method of claim 16
The P2MP/MP2P switch simultaneously transmits one downlink signal to the at least one antenna assembly, combines signals received from the at least one antenna assembly, and transmits a combined signal to the CU, or Selectively passing signals received from the antenna assembly of to the CU,
cell operator. delete The method of claim 12,
At least a portion of the beam coverage formed by the first portion of the at least one antenna assembly vertically overlaps at least a portion of the beam coverage formed by the second portion of the at least one antenna assembly.
cell operator. The method of claim 12,
At least a portion of the beam coverage formed by the first portion of the at least one antenna assembly horizontally overlaps at least a portion of the beam coverage formed by the second portion of the at least one antenna assembly.
cell operator.

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