KR102733134B1 - Method and apparatus for vertical frequency sharing in communication system - Google Patents

Abstract

A method and device for analyzing vertical frequency sharing possibilities in a communication system are disclosed. As an operating method of a communication node, the method comprises the steps of: generating interference amounts between at least one existing wireless station and at least one 5G specialized network; analyzing frequency sharing possibilities between the existing wireless station and the 5G specialized network based on the generated interference amounts; and integrating and providing construction information of the existing wireless station and the 5G specialized network, and characterized by continuous management of the existing wireless station and the 5G specialized network based on nationwide GIS information including altitude data. A method for analyzing vertical frequency sharing possibilities of a communication node can be provided.

Description

METHOD AND APPARATUS FOR VERTICAL FREQUENCY SHARING IN COMMUNICATION SYSTEM

The present invention relates to a frequency sharing method in a communication system, and more specifically, to a technology for vertically sharing frequencies between an existing wireless station and a 5G private network.

The mobile communication frequency, which is mainly for the purpose of constructing a nationwide network, has a very large social value that affects the general public, so telecommunications companies pay astronomical prices to secure the right to use the frequency band. In contrast, 5G specialized networks require frequencies that guarantee independent and regional use within a radius of tens to hundreds of meters. Due to this regional use characteristic, even frequency bands used by existing wireless stations can be guaranteed to be used to a certain extent within areas that meet preset criteria.

The areas that the 5G specialized network can use can be largely divided into two types. The first is an area where the transmission signal of the 5G specialized network does not affect the reception performance of the existing wireless station, in which the 5G specialized network is an interferer and the existing wireless station is a victim. The second is an area where the transmission signal of the existing wireless station does not affect the reception performance of the 5G specialized network, in which the existing wireless station is an interferer and the 5G specialized network is a victim. It is possible to use the 5G specialized network in an area that is not included in any of the areas calculated in these two scenarios. To do this, a process of calculating the amount of interference in a corresponding pixel using nationwide topographic information based on the resolution to be analyzed is necessary, and the present invention deals with a method for this.

Meanwhile, the technology that serves as the background for the invention was written to promote understanding of the background for the invention, and may include content that is not a prior art already known to a person with ordinary knowledge in the field to which the technology belongs.

The present invention provides a method and device for vertical frequency sharing between an existing wireless station and a 5G specialized network in an environment where the existing wireless station and the 5G specialized network coexist.

According to a first embodiment of the present invention for achieving the above purpose, a method for analyzing vertical frequency possibilities of a communication node in a communication system includes the steps of generating interference between at least one existing wireless station and at least one 5G specialized network, analyzing frequency sharing possibilities between the existing wireless station and the 5G specialized network based on the generated interference, and providing integrated construction information of the existing wireless station and the 5G specialized network, and is characterized by continuous management of the existing wireless station and the 5G specialized network based on nationwide GIS information including altitude data.

According to the present invention, in an environment where existing wireless stations and 5G specialized networks coexist, the 5G specialized network can share the frequency bands used by existing wireless stations and can be managed in an integrated manner with the existing wireless stations. Accordingly, the efficiency of using frequencies, which are national resources, can be improved.

Figure 1 is a conceptual diagram illustrating a first embodiment of a communication system.
FIG. 2 is a block diagram illustrating a first embodiment of a communication node constituting a communication system.
Figure 3 is a block diagram illustrating a first embodiment of a vertical frequency sharing analysis device (300).
Figure 4 is a flowchart illustrating a first embodiment of a shareability analysis module.
Figure 5 is a conceptual diagram illustrating the protection area of a public frequency radio station.
Figure 6 is a conceptual diagram illustrating the calculation of a 5G specialized network protection area from interference from existing wireless stations.
Figure 7 is a conceptual diagram illustrating the analysis process for calculating a protection area.
Figure 8 is a conceptual diagram illustrating the Excel CSV file format of the analysis results.
Figure 9 is a conceptual diagram illustrating a first embodiment of a method of applying unit bandwidth at the same frequency.
Figure 10 is a conceptual diagram illustrating a first embodiment of a co-frequency overlap method that considers only the range of overlapping bands in interference calculation.
Figure 11 is a conceptual diagram illustrating a first embodiment of a method for applying antenna patterns to derive a protection area of a 5G specialized network.
Figure 12 is a conceptual diagram illustrating a detailed analysis scenario for 5G specialized network protection.
Figure 13 is a conceptual diagram illustrating a detailed analysis for protecting the receiver of an existing wireless station from a 5G specialized network.
Figure 14 is a conceptual diagram illustrating the impact analysis according to the total amount of interference.
Figure 15a is a conceptual diagram illustrating a first embodiment of a method for integrated management of an analysis area.
Figure 15b is a conceptual diagram illustrating a second embodiment of a method for integrated management of an analysis area.
Figure 16 is a conceptual diagram illustrating a method for modifying analysis results according to parameter changes.
Figure 17 is a conceptual diagram illustrating management of usage areas in a 5G specialized network.
Figure 18 is a conceptual diagram illustrating a method for producing topographic elevation data using contour line data.
Figure 19 is a conceptual diagram illustrating a first embodiment of a pass profile between a transmitting station and a receiving station.

The present invention can have various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, but should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are only used to distinguish one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and/or includes a combination of a plurality of related described items or any one of a plurality of related described items.

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

The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

Unless otherwise defined, 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 this invention belongs. Terms defined in commonly used dictionaries, such as those defined in common dictionaries, should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

Hereinafter, with reference to the attached drawings, a preferred embodiment of the present invention will be described in more detail. In order to facilitate an overall understanding in describing the present invention, the same reference numerals are used for the same components in the drawings, and redundant descriptions of the same components are omitted.

Figure 1 is a conceptual diagram illustrating a first embodiment of a communication system.

Referring to FIG. 1, the communication system may include a plurality of communication nodes (110, 120, 131, 132). In addition, the communication system may further include a core network. If the communication system supports 5G communication technology, the core network may include a user plane function (UPF), a session management function (SMF), an access and mobility management function (AMF), etc. Or, if the communication system supports NSA (Non-StandAlone), the core network, which is composed of an S-GW (serving-gateway), a P-GW (PDN (Packet Data Network)-gateway), an MME (Mobility Management Entity), etc., may support not only 4G communication technology but also 4G communication technology. If the communication system supports network slicing technology, the core network may be divided into a plurality of logical network slices.

Communication nodes constituting the communication system (e.g., base stations, relays, UEs, AMFs, UPFs, SMFs, etc.) can perform communication using at least one communication technology from among CDMA (code division multiple access) technology, WCDMA (wideband CDMA) technology, TDMA (time division multiple access) technology, FDMA (frequency division multiple access) technology, OFDM (orthogonal frequency division multiplexing) technology, Filtered OFDM technology, OFDMA (orthogonal frequency division multiple access) technology, SC (single carrier)-FDMA technology, NOMA (Non-orthogonal Multiple Access) technology, GFDM (generalized frequency division multiplexing) technology, FBMC (filter bank multi-carrier) technology, UFMC (universal filtered multi-carrier) technology, and SDMA (Space Division Multiple Access) technology.

Among the communication nodes, a base station may be referred to as a NodeB, an evolved NodeB, a 5g NodeB (gNodeB), a BTS (base transceiver station), a radio base station, a radio transceiver, an access point, an access node, a Tx/Rx Point, etc. Among the communication nodes, a terminal may be referred to as a UE (user equipment), an access terminal, a mobile terminal, a station, a subscriber station, a portable subscriber station, a mobile station, a node, a device, etc. A communication node may have the following structure.

FIG. 2 is a block diagram illustrating a first embodiment of a communication node constituting a communication system.

Referring to FIG. 2, a communication node (200) may include at least one processor (210), a memory (220), and a transceiver device (230) that is connected to a network and performs communication. In addition, the communication node (200) may further include an input interface device (240), an output interface device (250), a storage device (260), etc. Each component included in the communication node (200) may be connected by a bus (270) and may communicate with each other.

However, each component included in the communication node (200) may be connected through an individual interface or individual bus centered around the processor (210), rather than a common bus (270). For example, the processor (210) may be connected to at least one of the memory (220), the transceiver (230), the input interface device (240), the output interface device (250), and the storage device (260) through a dedicated interface.

The processor (210) can execute a program command stored in at least one of the memory (220) and the storage device (260). The processor (210) may mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor in which methods according to embodiments of the present invention are performed. Each of the memory (220) and the storage device (260) may be configured with at least one of a volatile storage medium and a nonvolatile storage medium. For example, the memory (220) may be configured with at least one of a read only memory (ROM) and a random access memory (RAM).

Figure 3 is a block diagram illustrating a first embodiment of a vertical frequency sharing analysis device (300).

Referring to FIG. 3, the vertical frequency sharing analysis device (300) may include a radio station information management module (310), a sharing possibility analysis module (320), and a radio station sharing management module (330). The radio station information management module (310) may perform functions such as managing transmission and reception information of existing radio stations, managing public frequency radio station information, defining analysis parameters of a 5G specialized network, and managing 5G specialized network radio station information. The unique possibility analysis module (320) may calculate interference and noise levels of existing radio stations by applying a radio signal analysis method based on topographic information. Here, transmission and reception parameters and link information of existing radio stations may be used. Transmission and reception parameters of the 5G specialized network may be additionally required. The location of a receiving station to be protected by an existing radio station may be fixed, and the location of the 5G specialized network may be set in the form of a mobile radio station distributed nationwide. The analysis of vertical sharing possibilities for 5G specialized networks can be structured as follows.

Figure 4 is a flowchart illustrating a first embodiment of a shareability analysis module.

Referring to FIG. 4, the sharing possibility analysis module (320) may include a public frequency protection area calculation step (S410), a 5G specialized network protection area calculation step (S420), and an existing wireless station sharing analysis step (S430).

The public frequency protection area calculation step (S410) can calculate a protection area in which the reception of an existing public frequency radio station is not affected by the transmission of a 5G specialized network base station. The 5G specialized network protection area calculation step (S420) can calculate a protection area in which the reception of a 5G specialized network base station is not affected by the transmission of an existing M/W repeater or an existing radio station. The sharing possibility analysis module (320) can calculate the protection area in the public frequency protection area calculation step (S410) and the 5G specialized network protection area calculation step (S420). The existing radio station sharing analysis step (S430) can precisely analyze the amount of interference affected by the reception of an existing M/W repeater or radio station from a fixed transmission location of a 5G specialized network base station. The sharing possibility analysis module (320) can derive the amount of interference that each interference source or victim has at a specific location in the 5G specialized network protection area calculation step (S420) and the existing wireless station sharing analysis step (S430).

Referring again to FIG. 3, the radio station sharing management module (330) of the vertical frequency sharing analysis device (300) may include functions such as management of a nationwide integrated protection area, resetting of a protection area according to technical standards, and management of the status of a 5G integrated network. Through these functions, the radio station sharing management module (330) may appropriately adjust the protection standards of existing radio stations and 5G specialized networks, and support continuous management of information according to continuously increasing applications for 5G specialized networks.

The method of analyzing the possibility of sharing between radio stations can apply a propagation model based on the recommendation ITU-R P.452. The propagation model can provide clutter loss from the path profile. Therefore, high-accuracy digital map data may require the generation of a path profile from terrain elevation data and the application of clutter loss.

Digital map data may change due to changes in terrain, such as terrain elevation data, and environmental classification changes such as rural areas becoming cities or forests becoming roads due to artificial development. Such changes in digital map data may also affect the applied propagation model, so updates may be required at the shortest possible interval.

Existing radio stations can be classified into M/W fixed radio station types where both transmission and reception exist in fixed locations, mobile broadcast radio station types where transmission is fixed and reception is mobile, and UAV (Unmanned Aerial Vehicle) control station types where reception is fixed and transmission is mobile. The items required to calculate the protection area of existing radio stations can be classified as shown in Table 1 below. Based on all items required for analysis of fixed transmission and fixed reception, fixed transmission and mobile reception may not require items for reception. In addition, mobile transmission and fixed reception may not require items for mobile transmission.

Classification of required items detail Link Related Items Contains data related to the transmitting and receiving stations communicating with each other. Frequency related items The center frequency of the transmitter or receiver, the bandwidth licensed when registering the radio station, and the occupied bandwidth. Items related to the transmitter Contains data such as the location of the transmitting antenna, transmission power, and transmission antenna pattern. Recipient related items Contains data such as the location of the transmitting antenna, transmission power, and transmission antenna pattern. Index related items Contains data such as system temperature, noise figure, and I/N reference values.

The link-related items in the items required to calculate the protection area of an existing wireless station can be as shown in Table 2 below. Here, a link can be defined as a pair of transmitting and receiving stations that communicate with each other.

Link Related Items Required Items detail Link classification number Based on the name of a radio station that has the same location as a pair of transmitting and receiving stations that communicate with each other. Link Category Name A name consisting of the transmitting radio station name and the receiving radio station name, written in the format “transmitting radio station name-receiving radio station name.”
Example) Chuja relay station - Seoreum relay station Link number It refers to a pair of transmitting and receiving stations that communicate with each other and constitute the basic unit to be analyzed. Link name It is composed of the transmitting radio station name and the receiving radio station name, and is written in the format of "link classification name-center frequency-bandwidth-polarization" with additional detailed information. Example) Chuja relay station-Seoreum relay station-4730-40-V Facility name Name of wireless station facility operator

The link-related items in Table 2 can be applied to the analysis of fixed transmission and fixed reception, fixed transmission and mobile reception, and mobile transmission and fixed reception. The necessary items related to frequency and bandwidth in the items required to calculate the protection area of an existing radio station can be as shown in Table 3 below.

Frequency related items Required Items detail unit Center Frequency The center frequency of the transmitter or receiver. GHz Permitted Bandwidth Bandwidth licensed when registering a radio station MHz Occupied Bandwidth The occupied bandwidth required for the operation of the radio station. MHz

The frequency-related items in Table 3 can be applied to the analysis of fixed transmission and fixed reception, fixed transmission and mobile reception, and mobile transmission and fixed reception. In the items required to calculate the protection area of an existing radio station, the items related to the transmitting station when the radio station operates as a transmitter can be as shown in Table 4 below.

Items related to the transmitter Required Items detail unit Transmitter name The name of the radio station when the radio station is operating as a transmitter. radiator
hardness Longitude position of the transmitting antenna used by the transmitting radio station do radiator
latitude The latitudinal position of the transmitting antenna used by the transmitting radio station. do radiator
Ground height The height above ground of the transmitting antenna used by the transmitting radio station. m Transmit power Transmitter output power output by a transmitting radio station dBW radiator
Maximum gain The maximum gain of the transmitting antenna used by the transmitting radio station. dBi radiator
pattern Pattern name that matches a predefined pattern of the transmitting antenna used by the transmitting radio station. Example: ITU-R F.699-7 radiator
Beam width 3dB beamwidth of the transmitting antenna used by the transmitting radio station. do Transmitter Peter
loss The value of the feeder loss that occurs in the connection between the transmitter and the transmitting antenna used by the transmitting radio station. dB

The required items related to the transmitting station in Table 4 can be applied to the analysis of fixed transmitting and fixed receiving, fixed transmitting and mobile receiving, and may not be applied to the analysis of mobile transmitting and fixed receiving. In the items required to calculate the protection area of an existing radio station, the items related to the receiving station when the radio station operates as a receiver can be as shown in Table 5 below.

Recipient related items Required Items detail unit Recipient Name The name of the radio station when the radio station is operating as a receiver. receiving antenna
hardness Longitude position of the receiving antenna used by the receiving radio station do receiving antenna
latitude The latitudinal position of the receiving antenna used by the transmitting radio station. do receiving antenna
Ground height The height above ground of the receiving antenna used by the receiving radio station. m Receiving antenna
Maximum gain The maximum gain of the receiving antenna used by the receiving station. dBi Receiving antenna
pattern A pattern name that matches a predefined pattern of beam patterns of the receiving antenna used by the receiving radio station. Example: ITU-R F.699-7 Receiving antenna
Beam width 3dB beamwidth of the receiving antenna used by the receiving radio station. do Peter the Receiver
loss The value of the feeder loss that occurs in the connection between the receiver and the receiving antenna used by the receiving radio station. dB

The items related to the receiving station in Table 5 may be applied to the analysis of fixed transmission and fixed reception, mobile transmission and fixed reception, and may not be applied to the analysis of fixed transmission and mobile reception.

Items related to indices such as polarization type, system temperature, and noise figure among the items required to calculate the protection area of an existing radio station can be as shown in Table 6 below.

Index related items Required Items detail unit Type of polarization Select the type of polarization used by the transmitting or receiving station, either V or H. System Temperature System temperature of the receiver used by the receiving radio station K Noise Index Noise figure of the receiver used by the receiving station dB I/N reference value The interference level to noise level ratio used as a reference to protect the receiver used by the receiving radio station. dB

Among the index-related items in Table 6, the polarization type and the I/N reference value can be applied to the analysis of fixed transmission and fixed reception, fixed transmission and mobile reception, and mobile transmission and fixed reception. Among the index-related items, the system temperature and the noise index can be applied to the analysis of fixed transmission and fixed reception, mobile transmission and fixed reception, and may not be applied to the analysis of fixed transmission and mobile reception. A 5G specialized network may be composed of a base station and at least one terminal connected to the base station within the range of the base station. In order to calculate the available frequency and bandwidth of the 5G specialized network, parameters related to transmission and reception of the base station and the terminal may be applied. In addition, the parameters may be applied equally to the entire analysis. In addition, in the case of the base station, since the parameters applied between outdoor commercial use and indoor use may be different, they may be managed separately.

Parameters related to the 5G specialized network can be as shown in Table 7 below. Here, the contents of each item can be applied similarly to the contents of Tables 3, 4, 5, and 6 described for the existing wireless station.

Parameters related to 5G specialized network Required Items detail unit Radio station
Latitude/longitude Latitude and longitude indicating the location of the radio station do center
Frequency The center frequency of a radio station's transmitter or receiver. GHz Occupied bandwidth Occupied bandwidth required for the operation of a radio station MHz Antenna ground height Height above ground of antenna used by radio station m antenna maximum gain Maximum gain of the antenna used by the radio station dBi antenna pattern Name of the beam pattern of an antenna used by a radio station Antenna beam width 3dB beamwidth of the antenna used by the radio station do Peter's loss The value of the feeder loss that occurs in the connection between the receiver and the receiving antenna used by the radio station. dB Type of polarization Select the type of polarization used by the radio station, either V or H. Noise Index Noise figure of the receiver used by the radio station dB Adjacent channel leakage equipment dB Adjacent channel selection ratio dB I/N reference value The interference level to noise level ratio that serves as a standard for protecting receivers used by radio stations. dB

The vertical frequency sharing possibility analysis method can basically give priority to calculating an area that is not affected by interference between existing radio stations or an area that does not exceed a predefined I/N reference value in order to calculate the frequency band and area that can be used in the 5G specialized network. The vertical frequency sharing possibility analysis method can include the following scenarios. First, designation of a public frequency radio station protection area, second, calculation of a 5G specialized network reception protection area by a M/W link, and third, application of a precise analysis for protecting the 5G specialized network by the M/W link can be performed. The vertical frequency sharing possibility analysis method can perform designation of a public frequency radio station protection area as follows. Here, the public frequency radio station can include UAVs and UAV control centers, etc.

Figure 5 is a conceptual diagram illustrating the protection area of a public frequency radio station.

Referring to FIG. 5, the UAV (510) can be operated in all directions of 360 degrees centered on the UAV control station (520). In addition, the UAV relay station (530) can be additionally operated at a high altitude such as a mountain top to maintain LOS.

Transmission of public frequency radio stations including UAV (510), UAV control station (520), UAV relay station (530), etc. may not significantly affect the reception performance of the first base station (540) and the second base station (541) of the 5G specialized network. On the other hand, the transmission signal (550) of the first base station (540) of the 5G specialized network may act as interference affecting the transmission signal of the public frequency UAV control station (520). The transmission signal (551) of the second base station (541) of the 5G specialized network may act as interference affecting the transmission signal of the public frequency UAV relay station (530). Accordingly, the vertical frequency sharing analysis device (300) may include a function of calculating a protection area that is not affected by transmission of a 5G specialized network for public frequency radio stations including UAVs (510), UAV control stations (520), UAV relay stations (530), etc.

Since the locations of the UAV control station (520) and the UAV relay station (530) are both security matters, it may be impossible to calculate the protection area through general simulation. Therefore, the protection area (560) may include at least one point (570) as a specific area defined in advance. For setting the protection area, the setting parameters for one or more points may be as shown in Table 8.

Protected Area Name Protection frequency range
(MHz) Location of protected area point (latitude/longitude) 1 2 … N For Region A video
UAV 1 4720~4820 37.8
127.5 37.9
127.7 … 37.6
127.5

Referring to Table 8, the configuration parameters for one or more points include the protection area name, the protection frequency range, and the location (latitude, longitude) of the protection area point. The transmission parameters (location, maximum power, frequency, bandwidth, etc.) of the existing radio station can be determined at the time of application for the radio station and can be maintained for a long time. On the other hand, the information of the 5G specialized network can be frequently changed. Considering that the reception parameters of the 5G specialized network often use representative values in calculating the protection area, the method of calculating the protection area using a unit bandwidth of 1 MHz may be appropriate as the most conservative method. The protection area of the 5G specialized network from interference of the existing radio station can be calculated as follows.

Figure 6 is a conceptual diagram illustrating the calculation of a 5G specialized network protection area from interference from existing wireless stations.

Referring to FIG. 6, a first existing wireless station (620) located in a protection area (610) can transmit to a second existing wireless station (630). Here, the second existing wireless station (630) can be located outside the protection area (610). The transmission signal of the first existing wireless station (620) can cause interference to the neighboring first 5G specialized network (640) and the second 5G specialized network (650). The first 5G specialized network (640) located outside the protection area (610) of the first existing wireless station (620) may not be affected by the transmission signal of the first existing wireless station (620). Therefore, the protection area of the first 5G specialized network (640) can be calculated as the coverage of the first 5G specialized network (640). On the other hand, the coverage of the second 5G specialized network (650) may overlap the protection area (610) of the first existing wireless station (620) and the coverage of the second 5G specialized network (650). The base station (651) of the second 5G specialized network may not be able to decode the transmission signal of the terminal (652) connected to the second 5G specialized network (650) due to interference of the transmission signal of the first existing wireless station (620). The protection area can be calculated through the following analysis process.

Figure 7 is a conceptual diagram illustrating the analysis process for calculating a protection area.

Referring to FIG. 7, a plurality of analysis areas can be displayed in a two-dimensional array form based on an analysis range (710) and a maximum resolution (720), and a start point (730) and an end point (740) of the analysis area can be defined. Here, the analysis range (710) can be set centered on an existing wireless station (750). The analysis process for calculating a protection area can be performed in the direction of analysis progress (740) from the start point (730) of the analysis area to the end point (740) of the analysis area in row major order for the analysis area displayed in a two-dimensional array form.

The analysis range for calculating the protection area can be set based on the existing wireless station. In calculating the protection area through simulation, the wider the initial analysis range, the better. However, problems may arise where the time required for analysis and the storage capacity of the analysis results increase rapidly. For example, if the analysis range is set to 10 km upward, 10 km downward, 10 km to the left, and 40 km to the right based on the existing wireless station, and the maximum resolution of the analysis pixel is set to 100 m, the entire analysis area (or analysis point) can include (100 + 100) × (100 + 400) = 100,000 points. To solve the above problem, the analysis range can be set by predicting the entire protection area in advance with the resolution lowered. The analysis results can be saved in the form of a text file or an Excel file. The Excel file can be structured as follows.

Figure 8 is a conceptual diagram illustrating the Excel CSV file format of the analysis results.

Referring to FIG. 8, the analysis result may include a starting point coordinate (810) of the analysis area, a latitude coordinate (820) of the ending point of the analysis area, a longitude coordinate (830) of the ending point of the analysis area, a plurality of analysis result values (840), etc. The first horizontal row of the analysis result may be a longitude coordinate according to the maximum resolution interval based on the longitude of the starting point coordinate (810) of the analysis area, and the first vertical row of the analysis result may be a latitude coordinate according to the maximum resolution interval based on the latitude of the starting point coordinate (810) of the analysis area, listed up to the analysis end point of the analysis area. The value of the analysis result may represent only the interference amount (I) or may represent the interference-to-noise ratio (I/N) considering noise. Since the protection criterion is utilized as the interference-to-noise ratio (I/N) value, the value calculated as the interference amount (I) may need to be calculated in advance to determine the maximum allowable interference amount.

The various parameters applied to the above protection area calculation can be changed to desired values according to the user's intention during the analysis process of the protection area in the future or at the stage of changing and reviewing the technical standards. In addition, the above parameters are values that can be increased or decreased using a linear calculation formula on the dB scale and can be easily changed based on the initial analysis results. However, the process of deriving analysis results for the entire analysis range using GIS data can take a lot of time. The time required for the process of deriving analysis results can be shortened by recalculating by reflecting the changes in the transmission/reception parameters based on the initial analysis results. The initial analysis results can be calculated as follows assuming that the interference source and the victim with a unit bandwidth (1 MHz) are applied to the same center frequency.

Figure 9 is a conceptual diagram illustrating a first embodiment of a method of applying unit bandwidth at the same frequency.

Referring to Fig. 9, the existing wireless station (M/W wireless station) can transmit by applying 4 GHz center frequency, 40 MHz bandwidth, and 30 dBm output power, and the 5G specialized network can receive with 40 MHz bandwidth from 4 GHz center frequency. Therefore, the 5G specialized network can receive an interference signal with I = 30 dBm - A (dB, remaining component), N = -174 dBm + 10 log (40 MHz) (dB) + B (dB, remaining component), I/N = 30 - A + 174 - 73 - 10 log (MHz) - B. The unit bandwidth method can produce the interference signal of the 5G specialized network (I = 30dBm - 10log(40) - A, N = -174dBm + 10log(1MHz) + B, I/N = 30 - 13 - A + 174 - 60 - B). Therefore, the unit bandwidth method at the same frequency can compensate for the interference of the 5G specialized network.

When the bandwidth of the victim is larger than that of the interferer, the unit bandwidth method can decrease the I/N value due to the effect of the constant input I value and the increase in the N value. On the other hand, when the bandwidth of the interferer is larger than that of the victim, the unit bandwidth method can decrease the I value input to the victim and decrease the N value to the same level, resulting in the same I/N value.

The I/N of the 5G-specific network derived with the same frequency and 1MHz bandwidth may be the highest value due to its most conservative value.

Due to the different center frequencies and bandwidths between the receiver of the 5G-specific network and the transmitter of the existing radio station, the reception bandwidth of the 5G-specific network and the transmission bandwidth of the existing radio station may overlap. Therefore, the interference of the 5G-specific network can be calculated as follows in a different way from the same frequency and 1MHz unit bandwidth method.

Figure 10 is a conceptual diagram illustrating a first embodiment of a co-frequency overlap method that considers only the range of overlapping bands in interference calculation.

Referring to Figure 10, since only a portion of the output power of the interference source is received by the victim source, the interference amount Bandwidth Adjustment Factor (A _BW ) excluding the overlapping portion can be calculated using the following mathematical expression 1.

Here, B _v is the bandwidth of the victim, B _i is the bandwidth of the interferer, f _v is the center frequency of the victim, and f _i is the center frequency of the interferer.

The Frequency Dependent Rejection (FDR) method is defined in ITU-R SM.337 as a method of calculating the most accurate frequency overlap amount based on the transmit mask and receive mask. FDR can be calculated from the on-tune rejection (OTR) and off-frequency rejection (OFR) using the following mathematical expression 2.

Here, m _tx (f) is the relative power density mask at frequency f relative to the maximum power density of the transmitter, m _rx (f) is the relative power density mask at frequency f relative to the maximum power density of the receiver, and Df is the frequency difference between the transmitter and receiver.

The I _{FWS_agg} /N _5G calculation formula for calculating the protection area of a 5G specialized network can be expressed using mathematical expressions 3 and 4. However, since the protection area is calculated based on single entry interference, it can be calculated independently for each single existing radio station, not for aggregation interference.

The intercept level (I _{FWS_agg} ) by the existing wireless station can be calculated using mathematical expression 3.

Here, P _FWS (i) is the transmission power of the i-th existing radio station, is the transmitter antenna gain of the ith existing fixed wireless station, G _5G is the 5G specialized network receiving antenna gain, L _path (i) is the path loss between the ith existing wireless station and the 5G specialized network, L _feeder is the feeder loss of the 5G specialized network receiver, L _overlap (i) is the FDR calculated between the 5G specialized network transmitting signal and the ith existing wireless station receiving signal, and L _indoor is the indoor transmission loss.

The reception noise level (N _5G ) of the 5G specialized network can be calculated using mathematical expression 4.

Here, BW _5G is the occupied bandwidth of the 5G specialized network, and NF _5G is the noise figure of the 5G specialized network radio station receiver.

The antenna of the existing wireless station, which is the interference source, is based on the principle of using the actual antenna pattern. If the antenna pattern is not given, the maximum gain and beam width can be applied to ITU-R F.669. The antenna direction of the existing wireless station can automatically direct the transmission and reception antennas according to the position and height of the antenna based on the link information. Based on this, the 5G specialized network, which is the victim, moves in pixel units within the preset analysis range. Therefore, if the antenna is directed in a specific direction, the antenna gain may be low even if interference is possible, and the interference impact may be incorrectly judged. To solve this problem, the following antenna patterns can be considered.

Figure 11 is a conceptual diagram illustrating a first embodiment of a method for applying antenna patterns to derive a protection area of a 5G specialized network.

Referring to Figure 11, a 5G specialized network can support maximum gain by using omnidirectional antennas.

The results obtained by applying the same frequency and 1MHz unit bandwidth method, co-frequency overlap method, and FDR method can be used without interference by 5G-specific networks outside the protection area. However, in order to determine whether 5G-specific networks can be used within the protection area, more precise analysis may be required, and it may be necessary to determine the amount of interference of links for all existing radio stations. The following methods can be applied.

All the parameters of the existing wireless stations managed by the vertical frequency sharing analysis device (300) can be applied to configure all the links. At this time, if there are different channels used in each link, each channel can be separated to form an independent link. All the links can be configured by applying the parameters of the 5G specialized network managed by the vertical frequency sharing analysis device (300), and the maximum reception I/N can be calculated from a number of base stations included in the 5G specialized network. The base station reception I/N, which is the maximum value, can be used to determine whether or not there is a possibility of sharing for the 5G specialized network.

Figure 12 is a conceptual diagram illustrating a detailed analysis scenario for 5G specialized network protection.

Referring to FIG. 12, the 5G specialized network (1210) may include a first base station (1210-1) and a second base station. A first transmission signal (1220) may be transmitted from a first existing wireless station (1220-1) to a second wireless station (1220-2) and may be received as a first interference signal (1221) of the first base station (1210-1) and a second interference signal (1222) of the second base station (1210-2). In addition, a second transmission signal (1230) may be transmitted from a third existing wireless station (1230-1) to a fourth existing wireless station (1230-2) and may be received as a third interference signal (1231) of the first base station (1210-1) and a fourth interference signal (1232) of the second base station (1210-2). The maximum I/N can be determined from the I/N calculated from the first interference signal (1221), the second interference signal (1222), the third interference signal (1231), and the third interference signal (1232). The sharing possibility of the 5G specialized network (1210) can be determined by applying the maximum I/N.

The reception parameters of existing wireless stations are determined at the time of application for the wireless station and can generally be maintained for a long period of time. On the other hand, the transmission information (location, output power, center frequency, bandwidth, etc.) of the 5G specialized network may be information determined by the applicant at the time of application for the wireless station. It may be a very difficult task to predict the transmission information (location, output power, center frequency, bandwidth, etc.) of the 5G specialized network in advance and to distribute the protection area. It may be necessary to analyze the impact on the reception of existing wireless stations for specific fixed points based on the transmission information input at the time of application for the 5G specialized network.

The receivers of many existing wireless stations that have been built in advance can set up interference sources, and the interference amount to all existing wireless station victims nationwide can be calculated based on the information such as location, output power, frequency, and bandwidth provided when applying for a 5G specialized network in the future. Precise analysis to protect the receivers of existing wireless stations can be performed as follows.

Figure 13 is a conceptual diagram illustrating a detailed analysis for protecting the receiver of an existing wireless station from a 5G specialized network.

Referring to FIG. 13, a 5G specialized network (1310) may become a source of interference for a number of existing pre-built wireless stations (1320, 1330, 1340, 1350). In addition, a number of existing pre-built wireless stations (1320, 1330, 1340, 1350) may become victims.

A number of existing pre-built radio stations (1120, 1130, 1140, 1150) can calculate interference based on prior information (location, output power, frequency, bandwidth, etc.) of the 5G specialized network (1110).

On the other hand, the transmission information (location, output power, center frequency, bandwidth, etc.) of the 5G specialized network can be determined by the applicant when applying for a radio station. Therefore, it may be difficult to predict the transmission information of the 5G specialized network in advance and calculate the protection area. To solve this, when applying for a 5G specialized network, the entire reception influence of existing radio stations can be analyzed for a specific fixed point based on the transmission information provided. In other words, by setting interference sources for the receivers of a large number of existing radio stations that have been built in advance and applying the information such as location, output power, frequency, and bandwidth that are provided when applying for a 5G specialized network in the future, the amount of interference as a victim of all existing radio stations nationwide can be calculated.

Figure 14 is a conceptual diagram illustrating the impact analysis according to the total amount of interference.

Referring to FIG. 14, a 5G specialized network (1410) may include a first base station (1411) and a second base station (1412), and may be an interference source for a first existing wireless station (1420) and a second existing wireless station (1430). The first existing wireless station (1420) may receive a transmission signal (1441) of the first base station (1411) of the 5G specialized network and a transmission signal (1442) of the second base station (1412) of the 5G specialized network. The total interference amount of the first existing wireless station (1420) may include a transmission signal (1441) of the first base station (1411) of the 5G specialized network and a transmission signal (1442) of the second base station (1412) of the 5G specialized network. The second existing wireless station (1430) can receive the transmission signal (1451) of the first base station (1411) of the 5G specialized network and the transmission signal (1452) of the second base station (1412) of the 5G specialized network. The total interference amount of the second existing wireless station (1430) can include the transmission signal (1451) of the first base station (1411) of the 5G specialized network and the transmission signal (1452) of the second base station (1412) of the 5G specialized network.

If there is even one existing radio station whose I/N value exceeds -10dB as a result of calculating the reception impact of the 5G specialized network that has applied for frequency use, the approval of the 5G specialized network may be rejected. If the output power of the 5G specialized network is adjusted downward to apply for frequency use, the 5G specialized network that has applied for frequency use may be approved according to the interference criteria. Here, if the 5G specialized network that has applied for frequency use includes multiple base stations, the I/N value based on the aggregate interference applied to all base stations may be applied.

I _{5G_agg} /N _FWS for calculating the protection area of an existing wireless station can be calculated using the following mathematical expression 5.

N _FWS = -174 + 10log ₁₀ (BW _FWS ) + NF _FWS

Here, P _5G (i) is the transmission power of the ith 5G specialized network, G _5G (i) is the transmit/receive antenna gain of the ith 5G specialized network, L _path (i) is _the path loss between the ith existing radio station and the 5G specialized network, is the antenna gain of the existing fixed radio station receiver, L _feeder is the feeder loss of the existing radio station receiver, L _overlap (i) is the FDR calculated value between the ith 5G specialized network transmission signal and the received signal of the existing radio station, L _indoer is the indoor transmission loss, BW _FWS is the occupied bandwidth of the existing radio station, and NF _FWS is the noise figure of the radio station receiver.

In the case of the base station antenna of the 5G specialized network, which is the source of interference, it is possible to use the actual antenna pattern in the case of the sector antenna that does not perform beamforming, but it is generally difficult to fix the beam direction of the mobile communication antenna to one. In addition, when beamforming is performed, the antenna beam moves in various directions, making it even more difficult to define the beam direction. Therefore, in order to precisely analyze the existing wireless station, a conservative approach may be necessary by assuming an omnidirectional antenna with the maximum gain of the antenna in the 5G specialized network.

The vertical frequency sharing analysis device (300) can provide a function for integrated management of existing wireless stations and 5G specialized networks. The analysis area can be managed as follows.

Figure 15a is a conceptual diagram illustrating a first embodiment of an integrated management method for an analysis area, and Figure 15b is a conceptual diagram illustrating a second embodiment of an integrated management method for an analysis area.

Referring to FIG. 15a, multiple analysis areas (1510, 1520) may be defined so as not to overlap each other. The integrated analysis area (1530) may be the smallest rectangle that includes multiple analysis areas (1510, 1520).

Referring to FIG. 15b, multiple analysis areas (1540, 1550) may be defined to overlap each other. The integrated analysis area (1560) may be the smallest rectangle that includes multiple analysis areas (1540, 1550). The area (1570) where multiple analysis areas (1540, 1550) overlap may select and store the highest I/N value. In addition, the overlap area (1570) may store the total I/N value by adding up the interference amounts of each of the multiple analysis areas (1540, 1550).

Referring to Fig. 15, in order to derive the frequency band and region available for the 5G specialized network, the analysis is performed based on the link pair of transmission and reception, but in order to efficiently reduce the calculation time of the protection area, it is possible to derive the analysis result by separating the region where the protection area is possible in the same link. In addition, the separated analysis areas can be set not to overlap each other or can be set to overlap each other. In this case, multiple analysis areas exist in the same link, and in order to efficiently manage them, it is necessary to integrate them into one protection area. At this time, the integrated area is formed as the smallest rectangle that includes all of the areas. In addition, if the areas overlap, the highest I/N value is selected and stored. Additionally, it is also possible to calculate and store the total I/N value that considers the amount of interference in all overlapping cells.

In addition, the integrated area should be able to express multiple links as a single area, and ultimately, it should be possible to express the entire country as a single area.

If the parameters applied for calculating the initial protection area change in the future, there may be a problem that the protection area calculation for each link must be performed again. The above problem can be solved by changing the parameters that can be linearly calculated based on the previously analyzed results. The output power of the initial specialized network can be set to 33 dBm, and can be changed to 45 dBm in the future due to changes in technical standards, etc. The change in the output power of the 5G specialized network can be derived by adding 12 dB of interference to the calculated value of the pre-calculated analysis area to derive a new analysis value.

Figure 16 is a conceptual diagram illustrating a method for modifying analysis results according to parameter changes.

Referring to FIG. 16, the analysis area (1610) can calculate an initial protection area (1620) based on the result of applying the initially set parameters. If the applied parameter (e.g., change in output power) when calculating the initial protection area (1620) is changed, the analysis area (1610) can include a modified protection area (1630).

5G specialized networks can display and manage their own land area and usage area once the frequency use is approved, approved, and registered for use. The usage area of the 5G specialized network can be managed as follows:

Figure 17 is a conceptual diagram illustrating management of usage areas in a 5G specialized network.

Referring to FIG. 17, the usage area of the 5G specialized network may include a base station (1710), a business area (1720), a self-land area (1730), a coverage area (1740), a regulated area (1750), etc. The base station (1710) of the 5G specialized network may be located within the self-land area (1730), and the coverage area (1740) and the regulated area (1750) may be created centered around the base station (1710). Information on the usage area of the 5G specialized network (e.g., location of the base station, self-land area, coverage area, regulated area, etc.) may become a criterion for adjustment when an application for use of the 5G specialized network is received from a nearby area.

The first example of domestic topographic elevation data can be produced using the National Geographic Information Institute's DEM (Digital Elevation Model) data. The first example of domestic topographic elevation data produced can support GRS80 (geodetic Reference System 1980) as a reference ellipsoid, TM (Transverse Meractor) as a projection, ASCII, IMG, PDF as a distribution format, and 90m (3arc) as a resolution, and can be run in QGIS.

The first example of the domestic topographic elevation data produced above includes latitude/longitude coordinates, so it is possible to easily produce a digital map for application to a propagation model. However, since the resolution is 90m, it may be difficult to produce a digital map in places where more detailed analysis, such as 1arc, is required.

The second embodiment of domestic topographic elevation data can be produced by applying information included in a continuous digital topographic map using a contour map provided by the National Spatial Information Portal. The second embodiment of domestic topographic elevation data can apply the new GRS80 central part as a coordinate system and can use SHP as an extension. The second embodiment of domestic topographic elevation data can connect coordinates of the same height of the terrain with lines, and a process of recalculating the altitude according to the grid form of latitude/longitude can be required. The second embodiment of domestic topographic elevation data can produce a digital map supporting a resolution of up to 30 m.

Contour data can be expressed by connecting points with the same height. However, in order to obtain a path profile by applying a propagation model, height information according to latitude and longitude may be required. Topographic elevation data can be produced using contour data as follows.

Figure 18 is a conceptual diagram illustrating a method for producing topographic elevation data using contour line data.

Referring to Figure 18, latitude and longitude can generate grids using their respective resolutions (latitude pixel resolution, longitude pixel resolution) based on contour data, and can obtain the value closest to the contour line for altitude data at the desired coordinates. In addition, latitude and longitude can be generated using the altitude values of contour lines in a linear manner or by interpolation. The path profile for applying the propagation model can be configured as follows.

Figure 19 is a conceptual diagram illustrating a first embodiment of a pass profile between a transmitting station and a receiving station.

Referring to Figure 19, the transmitter may be located at the left end and the receiver may be located at the right end. The x-axis may represent the distance between the transmitter and the receiver, and the y-axis may represent the height difference between the transmitter and the receiver.

Domestic clutter map data can be produced using land use maps, land cover maps, land characteristics maps, and digital topographic maps from the National Geographic Information Institute and the National Spatial Information Portal. Land cover maps are maps that show the physical state of the land surface using images taken by satellites and can be used primarily for application to radio models. Land use maps can be used as maps that show land use situations centered on human economic activities such as land development and conservation. Land characteristics maps are graphic maps that represent space, and they display parcel (cadastral) boundaries and input attribute information that can identify parcels, such as land numbers, administrative district codes, land classifications, areas, and actual use situations, to identify land use situations by parcel. They can be used when searching or displaying relevant information using addresses. A digital topographic map is a map that shows the spatial distribution of contour lines, water systems (rivers, lakes, etc.), transportation networks (roads, railroads, etc.), facilities (houses, buildings, etc.), forests, farmland (rice fields, fields, etc.), and administrative district boundaries of a specific area at various scales, and can be used to create elevation data and mark facility boundaries.

In creating a clutter map, land use status map and land cover map can be mainly used. However, land use status map and land cover map can have different classification systems. Land use status map can classify residential and commercial areas into general residential areas, high-rise residential areas, commercial/business areas, bare land, and artificial green areas as shown in Table 8 below.

Major categories Medium category Subcategories cord Cities and residential areas Residential and commercial areas General residential area 3110 High-rise residential area 3120 Commercial, business area 3130 Naedaeji and artificial green space 3140

Land cover can be classified into residential and commercial areas as shown in Table 10 below.

Major categories Classification code Medium category Classification code Subcategories Classification code City-wide dry area 100 Residential area 110 Single-family residential facility 111 Shared housing facility 112 Industrial area 120 Industrial facilities 121 commercial area 130 Commercial/Business Facilities 131 Mixed area 132

In the ITU-R P.452-based propagation model, it may not be easy to define a high rise urban by applying a land cover map. On the other hand, if a land use map is applied, a high rise urban can be set as a high-rise residential area in the land use map. In addition, by additionally combining the height information of buildings existing in the digital topographic map with the basic information using the characteristics of the land use map and the land cover map, different clutter maps can be designated. The classification of clutter maps utilizing the combination of the land cover map and the digital topographic map can be as shown in Table 11 below.

Land cover map Digital topographic map Clutter map classification Residential area Single-family residential facility Height less than 10m Rural Height over 10m Sub-urban Shared housing facility Height less than 20m Sub-urban Height 20m~40m Urban Height over 40m Dense-urban commercial area Commercial/Business Facilities Height less than 20m Sub-urban Height 20m~40m Urban Height over 40m Dense-urban Mixed area - Urban

A cluster map can be systematically classified and coded by combining a land use status map, a land cover map, a land characteristic map, and a digital topographic map, and can be mapped with a channel model and applied to clutter calculation. Therefore, the vertical frequency sharing analysis device (300) can provide a nationwide interference calculation method for sharing a frequency band being used by an existing wireless station with a 5G specialized network, a method for producing a clutter map combining a land use status map, a land cover map, a land characteristic map, and a digital topographic map, and a method for integrated management of the generated protection area. In the first embodiment of the present invention, the vertical frequency sharing analysis device is characterized by generating an interference amount between an existing wireless station and a 5G specialized network by applying a nationwide GIS including altitude data, and deriving the possibility of frequency sharing based on the interference amount.

The methods according to the present application may be implemented in the form of program commands that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program commands, data files, data structures, etc., either singly or in combination. The program commands recorded on the computer-readable medium may be those specially designed and configured for the present invention or may be those known and available to those skilled in the art of computer software.

Examples of computer-readable media include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Examples of program instructions 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, etc. The above-described hardware devices can be configured to operate with at least one software module to perform the operations of the present invention, and vice versa.

Although the present invention has been described with reference to the above embodiments, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

Claims (10)

In the analysis method of 5G private network,
A step of receiving first information and second information from a wireless station information management module, wherein the first information includes a geographical location, output power, and an interference-to-noise ratio (I/N) reference value related to a first communication node that intends to use a first frequency band, and the second information includes a geographical location, output power, and an I/N reference value related to each of second communication nodes that use the first frequency band, and wherein information about the geographical location and output power related to the first communication node and the geographical location and output power related to each of the second communication nodes are information determined at the time of application for the 5G specialized network;
A step of determining a geographic protection area for the first communication node based on the first information;
A step of calculating a first I/N value from the second communication nodes for the geographical protection area of the first communication node;
a step of calculating a second I/N value from the first communication node for each of the second communication nodes' geographical protection areas, wherein the geographical protection areas of each of the second communication nodes are predefined based on the second information; and
A step of determining a possibility of sharing the first frequency band between the first communication node and the second communication nodes based on the first I/N value and the second I/N value,
The geographical location of each of the first information and the second information includes latitude and longitude, and uses geographic information system (GIS) information including altitude data to apply a radio signal analysis method based on the geographical location.
Analysis method for 5G specialized networks. delete In claim 1,
If the geographical protection area for the first communication node does not overlap with the geographical protection area of each of the second communication nodes, it is determined that the first frequency band is shareable for the geographical protection area for the first communication node.
Analysis method for 5G specialized networks. In claim 1,
When the geographical protection area for the first communication node overlaps with the geographical protection area of each of the second communication nodes, when determining the possibility of sharing the first frequency band, the second I/N value having the maximum value among the second I/N values is used.
Analysis method for 5G specialized networks. In claim 1,
When determining the possibility of sharing of the first frequency band, if the first I/N value is less than the I/N reference value of the first information and the second I/N values are all less than the I/N reference value of the second information, it is determined that the first frequency band is shareable in the geographical protection area for the first communication node,
If the first I/N value is greater than or equal to the I/N reference value of the first information or at least one of the second I/N values is greater than or equal to the I/N reference value of the second information, it is determined that the first frequency band is not shareable in the geographical protection area for the first communication node.
Analysis method for 5G specialized networks. As an analysis device for the 5G private network,
Contains a processor,
The above processor is an analysis device for a 5G specialized network:
Receiving first information and second information from a wireless station information management module, wherein the first information includes a geographical location, output power, and an interference-to-noise ratio (I/N) reference value related to a first communication node that intends to use a first frequency band, and the second information includes a geographical location, output power, and an I/N reference value related to each of second communication nodes that use the first frequency band, and wherein information about the geographical location and output power related to the first communication node and the geographical location and output power related to each of the second communication nodes are information determined at the time of application for the 5G specialized network;
Determine a geographic protection area for the first communication node based on the first information;
Compute a first I/N value from the second communication nodes for the geographic protection area of the first communication node;
Calculating a second I/N value from the first communication node for each of the second communication nodes' geographical protection areas, wherein the geographical protection areas of each of the second communication nodes are predefined based on the second information; and
Based on the first I/N value and the second I/N value, cause a possibility of sharing the first frequency band between the first communication node and the second communication nodes to be determined,
The geographical location of each of the first information and the second information includes latitude and longitude, and uses geographic information system (GIS) information including altitude data to apply a radio signal analysis method based on the geographical location.
Analysis device for 5G specialized networks. delete In claim 6,
The above processor,
If the geographical protection area for the first communication node does not overlap with the geographical protection area of each of the second communication nodes, it is determined that the first frequency band is shareable for the geographical protection area for the first communication node.
Analysis device for 5G specialized networks. In claim 6,
The above processor,
When the geographical protection area for the first communication node overlaps with the geographical protection area of each of the second communication nodes, when determining the possibility of sharing the first frequency band, the second I/N value having the maximum value among the second I/N values is used.
Analysis device for 5G specialized networks. In claim 6,
The above processor,
When determining the possibility of sharing of the first frequency band, if the first I/N value is less than the I/N reference value of the first information and the second I/N values are all less than the I/N reference value of the second information, it is determined that the first frequency band is shareable in the geographical protection area for the first communication node,
If the first I/N value is greater than or equal to the I/N reference value of the first information or at least one of the second I/N values is greater than or equal to the I/N reference value of the second information, it is determined that the first frequency band is not shareable in the geographical protection area for the first communication node.
Analysis device for 5G specialized networks.

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