KR102541625B1 - Determination system apparatus for determining the coverage of a communication cell and the operating method thereof - Google Patents

Abstract

A decision system apparatus and method of operation for determining the coverage of a communication cell are disclosed. The present invention is a decision system device capable of receiving communication quality information from a quality measurement drone flying along a predetermined flight path in a boundary area of a communication cell and determining the coverage of the communication cell based on the received communication quality information. and its operating method.

Description

DETERMINATION SYSTEM APPARATUS FOR DETERMINING THE COVERAGE OF A COMMUNICATION CELL AND THE OPERATING METHOD THEREOF

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a decision system apparatus and method of operation for determining the coverage of a communication cell.

Recently, an autonomous flying drone capable of flying autonomously without user control has emerged. These self-flying drones have a function of reaching a predetermined destination through autonomous flight without user control, and are mainly used in unmanned delivery service or smart farming.

In order to enable unmanned delivery service or smart farming using these drones, it is necessary to control the drones on a mobile communication network. , design work to adjust cell coverage according to the measurement result must be performed.

That is, in a situation where a predetermined communication cell is established, research on a technology that can clearly distinguish the coverage of a communication cell by measuring whether or not a drone can normally receive a communication signal from a base station in the cell boundary area is needed

In this regard, by allowing a drone for quality measurement to fly in the boundary area of the communication cell and obtaining quality information on the communication signal from the drone, the border area in which the drone is flying falls within the coverage of the communication cell. It is possible to consider the introduction of system technology for judging cognition.

The present invention is a decision system device capable of receiving communication quality information from a quality measurement drone flying along a predetermined flight path in a boundary area of a communication cell and determining the coverage of the communication cell based on the received communication quality information. and its operating method.

Determination system apparatus for determining the coverage of a communication cell by receiving communication quality information from a drone for quality measurement flying along a flight path preset to fly in the boundary area of the communication cell according to an embodiment of the present invention A location tracking unit receiving location information of the drone from the drone and tracking the location of the drone in real time, an event generation unit generating an event for determining the coverage of the communication cell at a preset first time interval, When the event occurs, the received signal strength of the communication signal received by the drone is continuously received from the drone n times (where n is a natural number equal to or greater than 2) at a predetermined second time interval, thereby obtaining n received signal strengths. The acquiring unit, when the n received signal strengths are obtained, checks the first position, which is the position of the drone at the time when the n received signal strengths have been acquired, and determines the n received signal strengths and a preset minimum allowable position. When the determination unit for comparing signal strengths with each other to determine whether or not the first position is an area within the coverage of the communication cell and the determination of whether the first position is an area within the coverage of the communication cell are completed, the After generating decision history information consisting of a result of determination as to whether the first location is an area within the coverage of the communication cell, the n received signal strengths, and location information on the first location, the decision history information and a judgment history storage processing unit that stores the in a history database.

In addition, it is determined to determine the coverage of the communication cell by receiving communication quality information from a drone for quality measurement flying along a flight path preset to fly in the boundary area of the communication cell according to an embodiment of the present invention. The operating method of the system device includes receiving location information of the drone from the drone and tracking the location of the drone in real time, generating an event for determining the coverage of the communication cell at a preset first time interval. , When the event occurs, the received signal strength of the communication signal received by the drone is continuously received from the drone n times (n is a natural number equal to or greater than 2) at a predetermined second time interval, thereby n number of received signal strengths. obtaining, when the n received signal strengths are obtained, determining a first position, which is the position of the drone at the time when the n received signal strengths have been acquired, and determining the n received signal strengths and a preset minimum Comparing allowable signal strengths with each other to determine whether the first position is an area within the coverage of the communication cell, and when the determination of whether the first position is an area within the coverage of the communication cell is completed, the After generating decision history information consisting of a result of determination as to whether the first location is an area within the coverage of the communication cell, the n received signal strengths, and location information on the first location, the decision history information and storing in a history database.

The present invention is a decision system device capable of receiving communication quality information from a quality measurement drone flying along a predetermined flight path in a boundary area of a communication cell and determining the coverage of the communication cell based on the received communication quality information. And it can provide an operation method.

1 is a diagram showing the structure of a decision system device for determining the coverage of a communication cell according to an embodiment of the present invention.
2 to 5 are diagrams for explaining a decision system device for determining a coverage of a communication cell according to an embodiment of the present invention.
6 is a flowchart illustrating an operating method of a decision system device for determining coverage of a communication cell according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. This description is not intended to limit the present invention to specific embodiments, but should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. While describing each drawing, similar reference numerals have been used for similar components, and unless otherwise defined, all terms used in this specification, including technical or scientific terms, are common knowledge in the art to which the present invention belongs. has the same meaning as commonly understood by the person who has it.

In this document, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated. In addition, in various embodiments of the present invention, each component, functional block, or means may be composed of one or more sub-components, and the electrical, electronic, and mechanical functions performed by each component are electronic It may be implemented with various known elements or mechanical elements such as circuits, integrated circuits, ASICs (Application Specific Integrated Circuits), and may be implemented separately or two or more may be integrated into one.

On the other hand, the blocks of the accompanying block diagram or the steps of the flowchart are computer program instructions that perform designated functions by being loaded into a processor or memory of a device capable of data processing, such as a general-purpose computer, a special purpose computer, a portable notebook computer, and a network computer. can be interpreted as meaning Since these computer program instructions may be stored in a memory included in a computer device or in a computer readable memory, the functions described in blocks of a block diagram or steps of a flowchart are produced as a product containing instruction means for performing them. It could be. Further, each block or each step may represent a module, segment or portion of code that includes one or more executable instructions for executing specified logical function(s). Also, it should be noted that in some alternative embodiments, functions mentioned in blocks or steps may be executed out of a predetermined order. For example, two blocks or steps shown in succession may be performed substantially simultaneously or in reverse order, and in some cases, some blocks or steps may be omitted.

1 is a diagram showing the structure of a decision system device for determining the coverage of a communication cell according to an embodiment of the present invention.

The decision system device 110 according to an embodiment of the present invention, as shown in FIG. As a device for determining the coverage of a communication cell 211 by receiving communication quality information from a drone 150 in a situation of flying according to, a location tracking unit 111, an event generator 112, and a receiver 113 , a determination unit 114 and a determination history storage processing unit 115.

Here, the drone 150 is an unmanned aerial vehicle capable of automatic flight, and means a verified drone that can calculate a highly accurate communication quality measurement value in order to determine the coverage of the communication cell 211 . In addition, the drone 150 may measure the received signal strength of the communication signal received from the base station of the communication cell 211 while flying along the flight path 212 and transmit it to the determination system device 110. , The determination system device 110 may determine the coverage of the communication cell 211 by checking the received signal strength received from the drone 150 . At this time, in order for the drone 150 to transmit the received signal strength to the decision system device 110, the communication network used when communicating with the decision system device 110 communicates with the base station of the communication cell 211. It may be a communication network different from the communication network used when performing. In this regard, the communication cell 211 may be a cell of a 5G mobile communication network. In this case, the drone 150 measures the received signal strength of a signal received from the base station of the communication cell 211 of the 5G mobile communication network, and then transmits the signal to the 4G mobile communication network. Information on the received signal strength may be transmitted to the decision system device 110 through a mobile communication network. In this way, the drone 150 communicates with the decision system device 110 through a mobile communication network separate from the mobile communication network of the communication cell 211, so that it is not affected by the communication cell 211 to be measured. , can perform normal communication with the decision system device 110.

In this situation, the location tracking unit 111 of the determination system device 110 receives location information of the drone 150 from the drone 150 and tracks the location of the drone 150 in real time.

The event generating unit 112 generates an event for determining the coverage of the communication cell 211 at a first preset time interval.

For example, when the preset first time interval is '10 minutes', the event generating unit 112 may generate an event for determining the coverage of the communication cell 211 at an interval of '10 minutes'.

When the event occurs, the receiving unit 113 continuously measures the received signal strength of the communication signal received by the drone 150 from the drone 150 n (n is a natural number equal to or greater than 2) times at preset second time intervals. By receiving, n received signal strengths are obtained.

When the n received signal strengths are obtained, the determiner 114 determines the first position, which is the position of the drone 150 at the time when the n received signal strengths have been obtained, and determines the n received signal strengths and It is determined whether the first location is an area within the coverage of the communication cell 211 by comparing preset minimum allowable signal strengths with each other.

For example, when the preset second time interval is '1 minute' and the n is '5', the receiving unit 113 receives the drone 150 when the event is generated by the event generating unit 112. ), '5' received signal strengths may be obtained by continuously receiving '5' received signal strengths for communication signals received by the drone 150 at '1 minute' intervals.

At this time, when it is assumed that 'R1, R2, R3, R4, and R5' are obtained as '5' received signal strengths from the receiver 113, the determination unit 114 determines '5' received signal strengths ' The first position, which is the position of the drone 150 at the time when R1, R2, R3, R4, and R5' has been acquired, is checked, and the '5' received signal strengths 'R1, R2, R3, R4, and R5' are checked. ' and the minimum allowable signal strength may be compared to determine whether the first location is an area within the coverage of the communication cell 211 .

In this regard, as shown in FIG. 3, the first position, which is the position of the drone 150 at the time when 'R1, R2, R3, R4, and R5', which are '5' received signal strengths, is acquired, When the location indicated by reference numeral 311 and the minimum allowable signal strength is 'S', the determination unit 114 determines '5' received signal strengths 'R1, R2, R3, R4, R5' and It is possible to determine whether the first location 311 is an area within the coverage of the communication cell 211 by comparing 'S', the minimum allowable signal strength.

At this time, according to an embodiment of the present invention, the decision unit 114 may include a selection unit 116, a decision vector generator 117, and a decision processing unit 118.

When the n received signal strengths are obtained, the selector 116 calculates an average of the n received signal strengths, determines whether the average exceeds the minimum allowable signal strength, and then determines whether the average exceeds the minimum allowable signal strength. If it is confirmed that the signal strength exceeds the minimum allowable signal strength, it is determined that the first location 311 is an area within the coverage of the communication cell 211, and if it is confirmed that the average does not exceed the minimum allowable signal strength, the Among n received signal strengths, a received signal strength measured lower than the minimum allowable signal strength is selected.

The decision vector generator 117 selects k (k is a natural number equal to or greater than 2) received signal strengths measured lower than the minimum allowable signal strength among the n received signal strengths, the minimum allowable signal strength. A k-dimensional decision vector having as components difference values between strength and each of the k received signal strengths is generated.

When the decision vector is generated, the decision processing unit 118 calculates a Manhattan norm for the decision vector, and calculates a value obtained by dividing the Manhattan norm by k as a decision reference value, and then the decision reference value is When it is confirmed that the first location 311 is less than a preset threshold value, it is determined that the first location 311 is an area within the coverage of the communication cell 211, and when it is confirmed that the criterion value is greater than or equal to the threshold value, the first location ( 311) is determined to be an area not within the coverage of the communication cell 211.

Here, the Manhattan norm is an L1 norm representing the size of a vector or matrix, and can be expressed as in Equation 1 below.

이 맨해튼 노름,

는 벡터 또는 행렬의 k번째 성분을 의미한다.here,

This Manhattan Gambling,

means the k-th element of a vector or matrix.

Hereinafter, operations of the selection unit 116, the decision vector generation unit 117, and the decision processing unit 118 will be described in detail.

First, as in the above example, it is assumed that 'R1, R2, R3, R4, and R5' are obtained as '5' received signal strengths by the receiver 113, and the minimum allowable signal strength is set to 'S'. Let's assume

Then, the selector 116 calculates the average of the '5' received signal strengths 'R1, R2, R3, R4, R5' and determines whether the average exceeds the minimum allowable signal strength 'S'. After checking , if it is confirmed that the average exceeds the minimum allowable signal strength 'S', it may be determined that the first location 311 is an area within the coverage of the communication cell 211 .

In relation to this, it is assumed that the average of '5' received signal intensities 'R1, R2, R3, R4, R5' is calculated as 'A'. Then, the selector 116 checks whether the average 'A' exceeds the minimum allowable signal strength 'S', and then determines whether the average 'A' exceeds the minimum allowable signal strength 'S'. If it is confirmed that the first location 311 is an area within the coverage of the communication cell 211, it may be determined.

If it is confirmed that the average 'A' does not exceed the minimum allowable signal strength 'S', the selector 116 selects '5' received signal strengths 'R1, R2, R3, Among R4 and R5', a received signal strength measured lower than 'S', the minimum allowable signal strength, may be selected.

In relation to this, 'R1, R2, R3' is selected as the received signal strength measured lower than 'S', the minimum allowable signal strength, among the '5' received signal strengths 'R1, R2, R3, R4, R5'. In this case, the decision vector generator 117 makes a three-dimensional decision having difference values between 'S', which is the minimum allowable signal strength, and 'R1, R2, and R3', which are 'three' received signal strengths, as components. Vectors can be created.

For example, when the difference between the minimum allowable signal strength 'S' and the 'three' received signal strengths 'R1, R2, R3' is 'Y1, Y2, Y3', the decision vector generator 117 ) can generate a decision vector called '[Y1 Y2 Y3]'.

In this way, when the decision vector is generated, the decision processing unit 118 may calculate a Manhattan norm for the decision vector, and calculate a value obtained by dividing the Manhattan norm by '3' as the decision reference value.

In this regard, when it is assumed that the Manhattan norm for the decision vector is calculated as 'M', and the value obtained by dividing the Manhattan norm 'M' by '3' is 'Z', the decision processing unit 118 determines the Manhattan norm. 'Z', which is a value obtained by dividing 'M', which is a norm, by '3', may be calculated as the criterion value.

Then, the decision processing unit 118 determines that the first location 311 is an area within the coverage of the communication cell 211 when it is confirmed that the decision criterion value 'Z' is less than the threshold value.

For example, let's assume that the threshold is 'Q'. At this time, if it is confirmed that the criterion value 'Z' is less than the threshold value 'Q', the determination processing unit 118 may determine that the first location 311 is an area belonging to the coverage of the communication cell 211. there is.

If it is confirmed that the criterion value 'Z' is equal to or greater than the threshold value 'Q', the decision processing unit 118 determines that the first position 311 is an area that does not fall within the coverage of the communication cell 211. can do.

That is, when n received signal strengths are obtained from the receiver 113, the determination unit 114 calculates an average of the n received signal strengths, and checks whether the average exceeds a preset minimum allowable signal strength. , If it is confirmed that the average exceeds the minimum allowable signal strength, it is determined that the first location 311 is an area within the coverage of the communication cell 211, and the average does not exceed the minimum allowable signal strength. If it is confirmed that the received signal strength is not the same, among the n received signal strengths, k received signal strengths measured lower than the minimum allowable signal strength are selected, and the difference values between the allowable signal strength and each of the k received signal strengths are components. After generating a decision vector, a value obtained by dividing the Manhattan norm of the decision vector by k is calculated as a decision criterion value, and when it is confirmed that the decision criterion value is less than a preset threshold value, the first position 311 is It is determined that it is an area within the coverage of the communication cell 211, and when it is confirmed that the criterion value is greater than or equal to the threshold value, it is determined that the first location 311 is an area that does not fall within the coverage of the communication cell 211. By doing so, the coverage of the communication cell 211 can be determined through the communication quality information received from the drone 150.

When the judgment history storage processing unit 115 determines whether the first location 311 is an area within the coverage of the communication cell 211, the first location 311 falls within the coverage of the communication cell 211. After generating decision history information consisting of the result of determination as to whether or not the region is the region, the n received signal strengths, and location information on the first location 311, the determination history information is stored in a history database.

For example, as in the above example, '5 received signal strengths are 'R1, R2, R3, R4, R5', and the first position 311 determines whether or not the area within the coverage of the communication cell 211 When the determination result is referred to as 'belonging' and the location information for the first position 311 is referred to as 'position information 1', the determination history storage processing unit 115 determines that the first position 311 is the location of the communication cell 211. When the determination of whether the area is within the coverage is completed, the determination result of whether the first location 311 is an area within the coverage of the communication cell 211, 'belongs to', and '5 received signal strengths' After generating the decision history information consisting of R1, R2, R3, R4, R5' and 'location information 1', the decision history information may be stored in the history database.

In this regard, the determination history information may be represented as shown in Table 1 below.

judgment result 5 received signal strengths location information belong R1, R2, R3, R4, R5 location information 1

According to an embodiment of the present invention, the determination system device 110 may further include a reset instruction message transmission unit 119 .

The reset instruction message transmission unit 119 continuously communicates a predetermined number of times or more, a result of determination as to whether the area is within the coverage of the communication cell 211, which is calculated in response to the event occurring at the first time interval. If it is confirmed by the determination indicating that the cell 211 does not belong, a reset instruction message instructing to reset the flight path 212 is generated and transmitted to the manager's terminal 160.

For example, as in the above example, when the first time interval is '10 minutes' and the preset number of times is '5 times', the reset instruction message transmission unit 119 generates a reset instruction message at intervals of '10 minutes'. The result of determination as to whether or not the area belongs to the coverage of the communication cell 211, calculated in response to the event to In this case, a reset instruction message instructing to reset the flight path 212 may be generated and transmitted to the manager's terminal 160.

In this way, the determination system device 110 according to the present invention determines whether the area belongs to the coverage of the communication cell 211 is confirmed to be 'does not belong' continuously 'five times' or more, the flight path 212 ) By generating a reset instruction message instructing to reset and sending it to the manager's terminal 160, the manager quickly indicates that the current flight path 212 of the drone 150 is an area that does not fall within the coverage of the communication cell 211. Once identified, the flight path 212 can be re-established.

According to one embodiment of the present invention, the determination system device 110 may further include a flight path transmission unit 120.

After the reset instruction message is transmitted to the manager's terminal 160, the flight path transmission unit 120 receives a command to reset the flight path 212 from the manager's terminal 160, the flight path 212 After generating a new flight path moved by a preset distance in the direction of the center area of the communication cell 211, the new flight path is transmitted to the drone 150.

First, it is assumed that a command to reset the flight path 212 is received from the manager's terminal 160 after the reset instruction message is transmitted to the manager's terminal 160 .

Then, as shown in FIG. 4, after generating a new flight path 413 by moving the flight path 212 toward the center area 411 of the communication cell 211 by a preset distance 412, A new flight path 413 may be transmitted to the drone 150 .

According to an embodiment of the present invention, the decision system device 110 may further include a decision history transmission unit 121, a selection unit 122, a region selection unit 123, and a region information transmission unit 124. .

When a request for transmission of decision history information is received from the manager's terminal 160, the decision history transmission unit 121 extracts the decision history information stored in the history database and transmits it to the manager's terminal 160.

The selection unit 122 receives a request for information on a communication vulnerable area among a plurality of divided areas, which are areas in which the entire area through which the flight path 212 passes, is pre-divided from the manager's terminal 160, the history database Among the decision history information stored in , only first decision history information including a decision result determined to be an area not belonging to the coverage of the communication cell 211 is selected.

When the first decision history information is selected, the area selector 123 determines that it is an area that does not fall within the coverage of the communication cell 211 included in the first decision history information among the plurality of division areas. A first segmentation area including the maximum location information within each segmentation area is selected as the weak communication area.

The area information transmission unit 124 transmits information on the first division area selected as the weak communication area to the manager's terminal 160 .

Hereinafter, operations of the selection unit 122, area selection unit 123, and area information transmission unit 124 will be described in detail with reference to FIG.

First, as shown in FIG. 5 , it is assumed that the entire area through which the flight path 212 passes is pre-divided into six divided areas 511, 512, 513, 514, 515, and 516.

At this time, when a request for transmission of information on a weak communication area among the six divisional areas 511, 512, 513, 514, 515, and 516 is received from the manager's terminal 160 to the decision system device 110, The selection unit 122 may select only first determination history information including a determination result determined to be an area not belonging to the coverage of the communication cell 211 from among the determination history information stored in the history database.

If it is assumed that the first decision history information is selected as 'decision history information 1, decision history information 2, decision history information 3, decision history information 4, and decision history information 5', the area selector 123 is shown in FIG. 5 As shown in the figure, among the six division areas (511, 512, 513, 514, 515, 516), 'decision history information 1, judgment history information 2, judgment history information 3, judgment history information 4, and judgment history' A first segmentation area that maximally includes location information determined to be an area that does not belong within the coverage of the communication cell 211 included in information 5' may be selected as the communication weak area. .

In this regard, the location determined to be an area not included within the coverage of the communication cell 211 included in 'decision history information 1, judgment history information 2, judgment history information 3, judgment history information 4, and judgment history information 5' When the information is the location indicated by reference numerals 517, 518, 519, 520, and 521, the area selection unit 123 selects a communication cell ( 211), the sectioned area 1 513, which is a sectioned area that maximally includes the location information (517, 518, 519, 520, 521) determined to be an area not belonging to the coverage area, is designated as the weak communication area. can be selected

That is, the area selector 123 includes the location determined to be the area not belonging to the coverage of the communication cell 211 the most among the six divided areas 511, 512, 513, 514, 515, and 516. An area may be selected as the weak communication area.

In this way, when segmentation area 1 (513) is selected as the communication weak area by the area selector 123, the area information transmission unit 123 transmits information on segmentation area 1 (513) selected as the communication weak area. may be transmitted to the manager's terminal 160.

Through this, a manager can easily identify a segmented area having a relatively poor communication environment among the six segmented areas 511 , 512 , 513 , 514 , 515 , and 516 constituting the flight path 212 .

6 is a decision system device for determining the coverage of a communication cell by receiving communication quality information from a drone for quality measurement flying along a flight path preset to fly in a boundary area of a communication cell according to an embodiment of the present invention. It is a flow chart showing the operation method of

In step S610, location information of the drone is received from the drone, and the location of the drone is tracked in real time.

In step S620, an event for determining the coverage of the communication cell is generated at a first preset time interval.

In step S630, when the event occurs, the received signal strength for the communication signal received by the drone is continuously received from the drone n (n is a natural number equal to or greater than 2) times at a predetermined second time interval, n Obtain N received signal strengths.

In step S640, when the n received signal strengths are acquired, a first position, which is the position of the drone at the time when the n received signal strengths have been obtained, is determined, and the n received signal strengths and a preset minimum Allowable signal strengths are compared with each other to determine whether the first location is an area within the coverage of the communication cell.

In step S650, when the determination as to whether the first location is an area within the coverage of the communication cell is completed, a result of determination as to whether the first location is an area within the coverage of the communication cell, and the n After generating decision history information consisting of two received signal strengths and location information for the first location, the decision history information is stored in a history database.

At this time, according to an embodiment of the present invention, in step S640, if the n received signal strengths are obtained, an average of the n received signal strengths is calculated, and whether the average exceeds the minimum allowable signal strength is determined. After checking, if it is confirmed that the average exceeds the minimum allowable signal strength, it is determined that the first location is an area within the coverage of the communication cell, and the average does not exceed the minimum allowable signal strength. selecting a received signal strength measured lower than the minimum allowable signal strength among the n received signal strengths, the received signal strength measured lower than the minimum allowable signal strength among the n received signal strengths If k (k is a natural number equal to or greater than 2) received signal strengths are selected, generating a k-dimensional decision vector having difference values between the minimum allowable signal strength and each of the k received signal strengths as components; and When a decision vector is generated, a Manhattan norm for the decision vector is calculated, a value obtained by dividing the Manhattan norm by k is calculated as a decision criterion value, and when it is confirmed that the decision criterion value is less than a preset threshold value, the Determining that the first position is an area within the coverage of the communication cell, and determining that the first position is an area not within the coverage of the communication cell when it is confirmed that the determination reference value is greater than or equal to the threshold value can include

Further, according to an embodiment of the present invention, in the operating method of the determination system device, a result of determination as to whether the area is within the coverage of the communication cell, which is calculated in response to the event occurring at the first time interval, is , If it is confirmed as a determination indicating that it does not fall within the coverage of the communication cell consecutively for more than a preset number of times, generating a reset instruction message instructing to reset the flight path and transmitting it to a manager's terminal. can

At this time, according to an embodiment of the present invention, in the method of operating the determination system device, when a command to reset the flight path is received from the manager's terminal after the reset instruction message is transmitted to the manager's terminal, the The method may further include generating a new flight path by moving the flight path by a predetermined distance toward the center area of the communication cell, and then transmitting the new flight path to the drone.

In addition, according to an embodiment of the present invention, the operating method of the decision system apparatus extracts the decision history information stored in the history database when a request for transmission of decision history information is received from the manager's terminal, and the manager's terminal When a request for information on a communication weak area is received from the manager's terminal among a plurality of divided areas, which are areas in which the entire area through which the flight path passes is pre-divided, the determination stored in the history database Selecting only first determination history information including a determination result determined to be an area not belonging to the coverage of the communication cell, among the history information, when the first determination history information is selected, the plurality of division areas Among them, the first segmentation area, which contains the maximum position information determined to be an area not belonging to the coverage of the communication cell included in the first determination history information, within each segmentation area, is designated as the communication weak area. The method may further include selecting and transmitting information about the first division area selected as the weak communication area to the manager's terminal.

In the above, the operating method of the decision system device according to an embodiment of the present invention has been described with reference to FIG. 6 . Here, since the operating method of the decision system device according to an embodiment of the present invention may correspond to the configuration of the operation of the decision system device 110 described with reference to FIGS. 1 to 5, a detailed description thereof is omitted. I'm going to do it.

The operating method of the determination system device according to an embodiment of the present invention may be implemented as a computer program stored in a storage medium for execution through a combination with a computer.

In addition, the operating method of the determination system device according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the medium may be those specially designed and configured for the present invention or those known and usable to those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. - includes hardware devices specially configured to store and execute program instructions, such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler.

As described above, the present invention has been described by specific details such as specific components and limited embodiments and drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , Various modifications and variations from these descriptions are possible to those skilled in the art in the field to which the present invention belongs.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and it will be said that not only the claims to be described later, but also all modifications equivalent or equivalent to these claims belong to the scope of the present invention. .

110: judgment system device
111: location tracking unit 112: event generating unit
113: receiving unit 114: determining unit
115: judgment history storage processing unit 116: selection unit
117: decision vector generation unit 118: decision processing unit
119: reset instruction message transmission unit 120: flight path transmission unit
121: judgment history transmission unit 122: selection unit
123: area selection unit 124: area information transmission unit
150: drone
160: manager's terminal

Claims (12)

In the determination system device for determining the coverage of a communication cell by receiving communication quality information from a quality measurement drone flying along a flight path preset to fly in a boundary area of the communication cell,
a location tracking unit that receives location information of the drone from the drone and tracks the location of the drone in real time;
an event generating unit generating an event for determining the coverage of the communication cell at a predetermined first time interval;
When the event occurs, the received signal strength of the communication signal received by the drone is continuously received from the drone n times (where n is a natural number equal to or greater than 2) at a predetermined second time interval, thereby obtaining n received signal strengths. receiving unit to acquire;
When the n received signal strengths are acquired, a first position, which is the position of the drone at the time when the n received signal strengths have been acquired, is determined, and the n received signal strengths and the preset minimum allowable signal strength are mutually determined. a determination unit which compares and determines whether or not the first location is an area within coverage of the communication cell; and
When the determination as to whether the first location is an area within the coverage of the communication cell is completed, a result of determination as to whether the first location is an area within the coverage of the communication cell, and the n received signal strengths and a decision history storage processing unit configured to generate decision history information composed of positional information about the first position and then store the decision history information in a history database.
including,
The judge
When the n received signal strengths are obtained, an average of the n received signal strengths is calculated, and after checking whether the average exceeds the minimum allowable signal strength, it is determined that the average exceeds the minimum allowable signal strength. If confirmed, it is determined that the first location is an area within the coverage of the communication cell, and if it is determined that the average does not exceed the minimum allowable signal strength, the minimum allowable one of the n received signal strengths a selection unit that selects a received signal strength measured lower than the signal strength;
When k (k is a natural number equal to or greater than 2) selected as received signal strengths measured lower than the minimum allowable signal strength among the n received signal strengths, the minimum allowable signal strength and the k received signal strengths a decision vector generator for generating a k-dimensional decision vector having difference values between the respective components as components; and
When the decision vector is generated, a Manhattan norm is calculated for the decision vector, and a value obtained by dividing the Manhattan norm by k is calculated as a decision criterion value, and then the decision criterion value is determined to be less than a preset threshold value. If it is confirmed, it is determined that the first location is an area within the coverage of the communication cell, and if it is determined that the determination reference value is greater than or equal to the threshold value, the first location is an area that does not fall within the coverage of the communication cell. Judgment processing unit that determines that
A decision system device comprising a. delete According to claim 1,
Determination indicating that the result of determination as to whether or not the area is within the coverage of the communication cell, calculated in response to the event occurring at the first time interval, does not fall within the coverage of the communication cell consecutively for more than a predetermined number of times. If it is confirmed as , a reset instruction message transmitter for generating a reset instruction message instructing to reset the flight path and transmitting the reset instruction message to the manager's terminal.
The decision system device further comprising a. According to claim 3,
After the reset instruction message is transmitted to the manager's terminal, when a command to reset the flight path is received from the manager's terminal, a new flight is performed by moving the flight path by a predetermined distance toward the center area of the communication cell. After creating a route, a flight path transmitting unit for transmitting the new flight path to the drone.
The decision system device further comprising a. According to claim 1,
a decision history transmitter configured to extract decision history information stored in the history database and transmit the extracted decision history information to the manager's terminal when a request for transmission of decision history information is received from a manager's terminal;
When a request for information on a communication weak area is received from the manager's terminal among a plurality of divided areas, which are areas in which the entire area through which the flight path passes is pre-divided, among the judgment history information stored in the history database, a selection unit that selects only first determination history information including a determination result determined to be an area not belonging to the coverage of the communication cell;
When the first determination history information is selected, location information determined to be an area not belonging to the coverage of the communication cell included in the first determination history information among the plurality of divisional areas is transferred to each divisional region. an area selector selecting a first segmentation area maximally included in as the communication weak area; and
Area information transmitter for transmitting information on the first division area selected as the weak communication area to the manager's terminal.
The decision system device further comprising a. A method of operating a determination system device for determining the coverage of a communication cell by receiving communication quality information from a quality measurement drone flying along a flight path preset to fly in a boundary area of the communication cell,
receiving location information of the drone from the drone and tracking the location of the drone in real time;
generating an event for determining coverage of the communication cell at a preset first time interval;
When the event occurs, the received signal strength of the communication signal received by the drone is continuously received from the drone n times (where n is a natural number equal to or greater than 2) at a predetermined second time interval, thereby obtaining n received signal strengths. obtaining;
When the n received signal strengths are acquired, a first position, which is the position of the drone at the time when the n received signal strengths have been acquired, is determined, and the n received signal strengths and the preset minimum allowable signal strength are mutually determined. comparing and determining whether the first location is an area within coverage of the communication cell; and
When the determination as to whether the first location is an area within the coverage of the communication cell is completed, a result of determination as to whether the first location is an area within the coverage of the communication cell, and the n received signal strengths and after generating decision history information composed of positional information about the first location, storing the decision history information in a history database.
including,
The step of determining
When the n received signal strengths are obtained, an average of the n received signal strengths is calculated, and after checking whether the average exceeds the minimum allowable signal strength, it is determined that the average exceeds the minimum allowable signal strength. If confirmed, it is determined that the first location is an area within the coverage of the communication cell, and if it is confirmed that the average does not exceed the minimum allowable signal strength, the minimum allowable one of the n received signal strengths selecting a measured received signal strength lower than the signal strength;
When k (k is a natural number equal to or greater than 2) selected as received signal strengths measured lower than the minimum allowable signal strength among the n received signal strengths, the minimum allowable signal strength and the k received signal strengths generating a k-dimensional decision vector having difference values between each of the components as components; and
When the decision vector is generated, a Manhattan norm for the decision vector is calculated, and a value obtained by dividing the Manhattan norm by k is calculated as a decision criterion value, and then the decision criterion value is determined to be less than a preset threshold value. If it is confirmed, it is determined that the first location is an area within the coverage of the communication cell, and if it is determined that the determination reference value is greater than or equal to the threshold value, the first location is an area that does not fall within the coverage of the communication cell. step of determining that
A method of operating a decision system device comprising a. delete According to claim 6,
Determination indicating that the result of determination as to whether or not the area is within the coverage of the communication cell, calculated in response to the event occurring at the first time interval, does not fall within the coverage of the communication cell consecutively for more than a predetermined number of times. If it is confirmed as, generating a reset instruction message instructing to reset the flight path and transmitting it to the manager's terminal
Method of operation of the decision system device further comprising. According to claim 8,
After the reset instruction message is transmitted to the manager's terminal, when a command to reset the flight path is received from the manager's terminal, a new flight is performed by moving the flight path by a predetermined distance toward the center area of the communication cell. Transmitting the new flight path to the drone after creating a path
Method of operation of the decision system device further comprising. According to claim 6,
extracting the decision history information stored in the history database and transmitting the same to the manager's terminal when a request for transmission of decision history information is received from the manager's terminal;
When a request for information on a communication weak area is received from the manager's terminal among a plurality of divided areas, which are areas in which the entire area through which the flight path passes is pre-divided, among the judgment history information stored in the history database, selecting only first determination history information including a determination result determined to be an area not belonging to the coverage of the communication cell;
When the first determination history information is selected, location information determined to be an area not belonging to the coverage of the communication cell included in the first determination history information among the plurality of divisional areas is transferred to each divisional region. selecting a first division area included as the maximum in , as the weak communication area; and
Transmitting information on the first division area selected as the weak communication area to the manager's terminal
Method of operation of the decision system device further comprising. Claim 6, claim 8, claim 9 or claim 10 of any one of the method through a combination with a computer to execute a computer program recorded on a computer-readable recording medium. A computer program stored in a storage medium for executing the method of any one of claims 6, 8, 9 or 10 through a combination with a computer.

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