KR102437485B1 - Analysis method for V2X communication system and analysis system thereof - Google Patents

Abstract

The present invention relates to a vehicle-to-X communication system analysis method and an analysis system using the same.
The vehicle-to-X communication system analysis method according to the present invention comprises: collecting data about a wireless signal transmitted or received in the V2X communication system from the V2X communication system; And transmitting at least a portion of the collected wireless signal data to the client; includes, the wireless signal data is collected from two or more of the plurality of layers (layers) constituting the V2X communication system.

Description

A vehicle-to-X communication system analysis method and an analysis system using the same {Analysis method for V2X communication system and analysis system thereof}

The present invention relates to an analysis method for testing a vehicle to everything (V2X) communication system and a system for analyzing a vehicle to everything (V2X) communication system.

Vehicles are developing in the direction of providing safety, mobility, and convenience by incorporating ICT technology. By applying sensors such as radar and vision to the vehicle, it provides safety support services such as blind spot warning, collision warning, and ACC (Adaptive Cruise Control) to the driver. It provides convenient services such as automatic fare collection and bus information service.

Recently, vehicle safety using V2X communication technology, cooperative autonomous driving, and C-ITS (Cooperative-ITS) technology are being studied. V2X communication technology refers to direct communication between vehicles (V2V; Vehicle to Vehicle) and vehicle-to-infrastructure (V2I; Vehicle to Infrastructure) communication from a vehicle perspective. From the perspective of C-ITS, which includes vehicles and pedestrians, roads and facilities, and an integrated traffic information center, communication between pedestrians and vehicles (Pedestrian to Vehicle), Pedestrian to Driver (P2D), and between pedestrians and infrastructure Comprehensive connectivity including communication (Pedestrian to Infra-structure), Road to Infrastructure (R2I) and In-vehicle Network may be considered.

A plurality of wireless communication technologies are used to provide all the connections considered in the C-ITS environment. For example, Wireless Access in Vehicular Environments (WAVE) communication technology is used for V2V/V2I communication, WLAN or Bluetooth technology is used for P2V/P2I communication, and sensor communication technology can be used for R2I communication. have.

On the other hand, the V2X communication system is to provide safety and convenience services to all vehicles running in the C-ITS environment through V2V or V2I-based cooperative communication. Verification and evaluation through repeated experiments in a laboratory or real road environment performance is required

However, in particular, verification and evaluation of the V2X communication system in an actual road environment requires a lot of time and money due to the nature of the test environment, and there were problems such as difficulty in repeatedly testing the same scenario.

An object of the present invention is to provide an analysis method and system for easily and efficiently performing a test for a vehicle-to-X (V2X) communication system.

A vehicle-to-X communication system analysis method according to an embodiment of the present invention is for testing a V2X communication system, comprising: collecting data about a wireless signal transmitted or received in the V2X communication system from the V2X communication system; and transmitting at least a portion of the collected wireless signal data to the client, wherein the wireless signal data is collected from two or more layers among a plurality of layers constituting the V2X communication system.

Here, the wireless signal data collected from the V2X communication system includes received signal information, a vehicle communication message, logic data calculated using the vehicle communication message, and an application result value determined using the logic data.

At least one of real-time tracking of a test result being performed and performance analysis of a completed test result may be processed using the wireless signal data transmitted to the client.

The analysis system according to an embodiment of the present invention may test the V2X communication system by performing the analysis method.

Meanwhile, the steps according to the vehicle-to-X communication system analysis method may be configured as a computer program to be performed in the analysis system according to an embodiment of the present invention, and the computer program may be stored in a computer-readable medium. can

In addition, the analysis system for testing the V2X communication system according to an embodiment of the present invention is connected to a V2X communication system provided in a vehicle using wired/wireless communication, and data on a wireless signal transmitted or received in the V2X communication system a data collector for collecting; and a server for receiving and storing the wireless signal data collected by the data collector and storing it in a database, and transferring at least a portion of the received wireless signal data to the client; including, wherein the wireless signal data constitutes the V2X communication system is collected from two or more of the plurality of layers.

According to an embodiment of the present invention, by collecting data on a wireless signal transmitted or received in a V2X communication system and transmitting it to a client for analysis, a test for a vehicle-to-X (V2X) communication system is easily and efficiently performed can make it happen

According to another embodiment of the present invention, by allowing data for a plurality of layers constituting the V2X communication system such as received signal information, vehicle communication message, logic data and application result value to be collected, according to the test result The cause of the problem can be analyzed more accurately.

According to another embodiment of the present invention, by allowing the wireless signal to be used for the test of the V2X communication system to be generated in the analysis system itself, it is possible to easily perform a test for a high-risk or repetitive situation.

1 is a block diagram showing the overall configuration of an analysis system according to an embodiment of the present invention.
2 is a view for explaining an embodiment of the configuration of the V2X communication system.
3 is a flowchart illustrating an analysis method for testing a V2X communication system according to an embodiment of the present invention.
4 is a block diagram illustrating an embodiment of a configuration of a data collector.
5 and 6 are diagrams for explaining embodiments of functions and operations of a data collector.
7 is a timing diagram illustrating an embodiment of a method for a data collector to collect wireless signal data from a V2X communication system.
8 is a diagram for explaining an embodiment of a user interface (UI) provided from a data collector.
9 is a block diagram for explaining an embodiment of a configuration of a data collector having a wireless signal generating function.
10 is a block diagram showing an embodiment of the configuration of a server.
11 is a flowchart illustrating an embodiment of a method for a server to transmit wireless signal data to a client.
12 is a flowchart illustrating another embodiment of a method for a server to transmit wireless signal data to a client.

Hereinafter, a vehicle-to-X communication system analysis method and an analysis system using the same according to the present invention will be described in detail with reference to the accompanying drawings.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to a specific embodiment, it can be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In describing the present invention, terms such as first and second may be used to describe various components, but the components may not be limited by the terms. The above terms may be used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The term and/or may include a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but other components may exist in between. can be understood On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it may be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression may include the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and one or more other features It may be understood that the existence or addition of numbers, steps, operations, components, parts or combinations thereof is not precluded in advance.

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

In addition, the following embodiments are provided to more completely explain to those with average knowledge in the art, and the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

1 is a block diagram showing the overall configuration of the analysis system according to an embodiment of the present invention, the analysis system 100 performs an analysis method for testing the V2X communication system (10).

Referring to FIG. 1 , the analysis system 100 may be configured to include a data collector 110 , a server 120 , and a client 130 .

The data collector 110 serves to collect data for a wireless signal transmitted or received in the V2X communication system 10 , and the server 120 transmits the wireless signal data collected by the data collector 110 to the client 130 . It serves to transmit

Here, the V2X communication system 10 is attached to a vehicle and periodically transmits a packet message related to vehicle safety, etc., and periodically receives a packet message from a V2X communication system (not shown) attached to another vehicle.

The packet message transmitted and received between the V2X communication systems includes vehicle ID information, location information, and status information (eg, driving direction and speed, deceleration and acceleration status, etc.), and may have a standardized message form. .

The V2X communication system 10 can know the distance between the vehicle to which it is attached and the surrounding vehicle and the operating state of the surrounding vehicle, etc. using a packet message periodically received from the V2X communication system of another vehicle as described above, and accordingly Able to judge dangerous situations.

On the other hand, the V2X communication system 10 includes a hardware module and software stack to which a technology according to the standard is applied so that packet messages between vehicles or between vehicles and infrastructure can be transmitted and received within a short time in a radio environment in which vehicles move at high speed. do.

For example, the WAVE communication technology standardized by the IEEE in the United States is a technology that can transmit and receive packet messages between vehicles or between vehicles or between vehicles and infrastructure within a short time of less than 100 msec up to 1 km in a radio environment in which vehicles move at high speed.

As shown in (a) of Figure 2, the V2X communication system 10 to which the WAVE communication technology is applied may include a V2X communication module, a GPS module, a memory and a processor.

The processor provided in the V2X communication system 10 is a processor for driving a safety application, may be linked with the vehicle internal network, and may transmit application result values such as various warnings to the driver expression device. have.

In addition, the software stack of the WAVE communication system can be divided into software on the kernel and application service software. Here, the software on the kernel includes a device driver, MAC transmission/reception function, routing function, IP packet function, WSMP safety message function, management function, authentication and security protocol function, etc., and application service software includes vehicle safety service, cooperative autonomous driving service and a driver interface, and the like.

More specifically, the software stack of the WAVE communication system is composed of a plurality of layers as shown in FIG. will be.

Table 1 below shows information on a plurality of standards required to implement WAVE communication technology.

Referring to (b) of FIG. 2 and Table 1, the WAVE communication technology uses a 5.9 GHz dedicated frequency band and is designed to satisfy IEEE 802.11p and IEEE 1609.x standards.

IEEE 802.11p includes a physical (PHY) layer and MAC layer for wireless transmission, and the IEEE 1609.x standard includes a multi-channel layer, a network layer, an authentication and security layer, and an application service layer mounted on top of IEEE 802.11p. .

The SAE J2735 standard includes a message layer and defines a Dedicated Short Range Communication (DSRC) message set that is transmitted and received between vehicles or between vehicles and infrastructure.

On the other hand, the SAE J2735 standard includes a message layer, includes a safety application layer, and defines performance requirements and verification standards necessary for a service.

The V2X communication system 10 according to an embodiment of the present invention may include a V2X communication module configured to include a plurality of layers to satisfy the WAVE communication standards as described with reference to FIGS. 2 and 1, but the present invention is not limited thereto, and may be in accordance with other vehicle-to-vehicle communication standards.

In addition, as shown in Figure 1, the analysis system 100 may include a plurality of data collectors (110, 140), the plurality of data collectors (110, 140) is a plurality of V2X communication systems It is possible to collect radio signal data as described above from (10, 11).

In this case, the server 120 may collect the wireless signal data for all V2X communication systems 10 and 11 by receiving the wireless signal data each collected from the plurality of data collectors 110 and 140, The number of data collectors 110 and 140 or V2X communication systems 10 and 11 from which wireless signal data is collected by the server 120 may be set to a value of 2 or more depending on the performance of the analysis system 110 . .

On the other hand, in the above, the present invention has been described by taking as an example that the wireless signal data for a plurality of V2X communication systems 10 and 11 are collected by a plurality of data collectors 110 and 140, but the V2X communication systems 10 , 11) may be collected by a number smaller than the number of, for example, one data collector 110 .

The server 120 may receive the wireless signal data as described above from each of the plurality of data collectors 110 and 140 , and the plurality of data collectors 110 and 140 are the plurality of V2X communication systems 10 . , 11) can collect wireless signal data from each, and the number of V2X communication systems in which wireless signal data is collected by the data collector 110 can be set to a value of 2 or more depending on the performance of the analysis system 110 .

According to an embodiment of the present invention, data from two or more layers among a plurality of layers constituting the communication module of the V2X communication system 10 is collected by the data collector 110 in the test process, and the server The test results for the V2X communication system 10 are analyzed by being delivered to the client 130 through the 120 .

Accordingly, the test for the V2X communication system 10 is easily and efficiently performed, and when a problem occurs in the test result, it is possible to accurately analyze whether the cause of the problem occurred in which layer.

Hereinafter, embodiments of the vehicle-to-X communication system analysis method and system according to the present invention will be described in more detail with reference to FIGS. 3 to 12 .

3 is a flowchart illustrating an analysis method for testing a V2X communication system according to an embodiment of the present invention, the overall configuration of an analysis system according to an embodiment of the present invention shown in FIG. It will be described in conjunction with a block diagram showing

Referring to FIG. 3 , the data collector 110 collects data for a wireless signal transmitted or received in the V2X communication system 10 from the V2X communication system 10 (step S300 ).

Here, the wireless signal data collected in step S300 is collected from a plurality of layers constituting the V2X communication system 10, and may include received signal information, vehicle communication message, logic data, and application result value. .

Preferably, two or more data among the received signal information, vehicle communication message, logic data and application result value may be collected from the V2X communication system 10 by the data collector 110 .

The received signal information includes received signal strength (RSSI, Received Signal Strength Indicator) and channel congestion (CBR, Channel Busy Ratio), which may be data collected from the physical / MAC layer of the V2X communication system 10 .

Here, the data collected from the physical / MAC layer of the V2X communication system 10 is not limited to received signal strength (RSSI) and channel congestion (CBR, Channel Busy Ratio), and SNR (Signal to Noise Ratio) including noise information ) may further include signal-related information, such as.

On the other hand, the vehicle communication message includes basic safety message (BSM, Basic Safety Message) data received from one or more other V2X communication systems (not shown) to the V2X communication system 10, which is a message of the V2X communication system 10 It may be data collected from a layer.

The basic safety message (BSM) includes BSM data elements defined in the SAE J2735 standard, for example, time (UTC time), position (Latitude, Longitude, Elevation), speed (Speed), direction (Heading), brake It may include data such as system state (traction, abs, scs, brakeBoost, auxBrakes) and vehicle size (Width, Length) and the like.

Here, the data collected from the message layer of the V2X communication system 10 is not limited to the data as described above, and further includes data related to surrounding vehicles such as path history (PATH HISTORY) and path prediction (PATH PREDICTION). can do.

The logic data is calculated in the V2X communication system 10 using a vehicle communication message received from one or more other V2X communication systems (not shown), and object classification (TC, Target Classification) defined in the SAE J2945 standard, collision Time (TTC, Time-to-Collision), intersection time (TTI, Time-to-Intersection), and may include the intersection distance (DTI, Distance to Intersection), etc.

And the application result value is determined in the V2X communication system 10 using the calculated logic data, and as required by the SAE J2945 standard, Forward Crashing Warning (FCW), Emergency Brake Detection Warning (EEBL, Emergency Electronic) vehicle safety applications such as Brake Lights), Blind Spot Warning (BSW), Lane Change Warning (LCW), and Intersection Movement Assist (IMA).

Here, the logic data and the application result value may be collected from the safety application (Safety Application) layer of the V2X communication system 10 by the data collector 110 .

The server 120 transmits at least a portion of the wireless signal data collected by the data collector 110 from the V2X communication system 10 to the client 130 in the step S300 (step S310).

After that, the client 130 analyzes the test result for the V2X communication system 10 using the wireless signal data transmitted from the server 120 (step S320).

For example, the client 130 performs real-time tracking of the test result currently being performed using the wireless signal data transmitted from the server 120 , or the wireless data stored in the database 124 of the server 120 . It is possible to perform performance analysis on the result of the completed test by receiving the signal data.

Meanwhile, in the above, the functions and operations of the data collector 110 , the server 120 , and the client 130 constituting the analysis system 100 have been described with reference to FIGS. 1 to 3 , but the present invention is limited thereto. However, two or more of the components may be merged into one component, or some of the functions and operations of the components may be performed by other components.

For example, in the above, an embodiment of the present invention has been described in which the client 130 analyzes the test result using the wireless signal data transmitted from the server 120 , but the client 130 performs At least some of the analysis steps may be performed by the server 120 .

In addition, the data collector 110 may further collect the location information of the vehicle to which the V2X communication system 10 is attached, and the collected location information is synchronized with the wireless signal data collected from the V2X communication system 10 to the server It may be transmitted to the client 130 through 120 .

In addition, the client 130 may perform analysis by extracting some of the wireless signal data transmitted from the server 120 , but the present invention is not limited thereto. Some data to be analyzed by the client 130 may be extracted from the wireless signal data and delivered to the client 130 .

4 is a block diagram showing an embodiment of the configuration of the data collector, and the illustrated data collector 110 includes a core layer (Core layer, 111) and a plug-in layer (Plug-in layer, 112). can be

Referring to FIG. 4 , the core layer 111 may include an input adapter and an output adapter for input/output of data, and a control adapter for a test control interface (TCI). The test control interface (TCI) may be a special protocol that works only with a specific V2X communication system, or may be a standardized protocol.

The data collector 110 is connected to the V2X communication system 10 and the positioning system in a wired or wireless communication manner through the input adapter, and the data for the wireless signals transmitted or received in the V2X communication system 10 and the corresponding vehicle location information can be collected.

The wireless signal data and location information collected as described above may be synchronized with each other and temporarily stored in the database of the core layer 111, and the wireless signal data and location information stored in the database are exported to a file through an output adapter. Or it may be transmitted to the server 120 and uploaded (upload).

On the other hand, test control interfaces (TCI) including conditions for testing the V2X communication system 10 of the vehicle through the control adapter of the core layer 111 may be provided.

In addition, in the core layer 111, an input manager (source manager), an output manager (sync. manager), a DB manager (database manager), and a procedure manager for managing and controlling the operations of the data collector 110 as described above. A flow manager, a configuration manager, and a status control may be provided.

Referring to FIG. 5 , the data collector 110 transmits the positioning data collected from the positioning system through the positioning device source plug-in by using an Ethernet communication method (User Datagram Protocol (UDP)). ) can be entered.

In addition, the data collector 110 may receive, through the OBU source plug-in, a V2X packet, which is wireless signal data collected from the V2X communication system 10, as UDP using an Ethernet communication method.

The Ethernet communication method and the UDP protocol are examples of the communication method used by the data collector 110 to collect data, and the present invention is not limited thereto.

As described above, the V2X packet and positioning data input through the OBU source plug-in and the location device source plug-in are synchronized with each other by the data/procedure manager and then through the upload sync plug-in (upload sync. plug-in). It may be transmitted to the server 120 .

Here, the V2X packet and positioning data may be uploaded to the server 120 by HTTPS using the LTE (Long Term Evolution) communication method, but the present invention is not limited thereto. For example, various wired and wireless communication methods such as WIFI can be used

More specifically, as shown in FIG. 6, the location information (positioning data) and wireless signal data (V2X packet) are temporarily stored in the database, including a system timestamp for time synchronization, and then the server ( 120) can be uploaded.

On the other hand, V2X packets and positioning data may be output to a file through an output sync plug-in (export sync. plug-in).

As described above, the data collector 110 configures a data input/output interface in an expandable plug-in form, and uses a communication method such as Ethernet, USB, CAN, etc. to receive data from various vehicle sensors as well as the V2X communication system and positioning system. Data can be collected and transmitted in various forms using communication methods such as 3G, 4G, Wifi, and file I/O.

7 is a timing diagram showing an embodiment of a method for the data collector 110 to collect wireless signal data from the V2X communication system 10, the same as described with reference to FIGS. 1 to 6 of the illustrated method A description thereof will be omitted below.

Referring to FIG. 7 , the data collector 110 transmits a “PKT_SETUP” packet to the V2X communication system 10 to set parameters for testing the V2X communication system 10 .

To this end, the data collector 110 may first receive communication parameters set for test execution through a user interface (UI) provided as shown in the screen shown in FIG. 8 . Here, the screen shown in FIG. 8 may be displayed on the client 130 or may be displayed on the data collector 110 itself when a display module is provided in the data collector 110 .

Specifically, the "Logger UI" provided from the data collector 110 is a V2X/GPS collected from the first area 810 and the V2X communication system 10 for displaying information on the location where the test is performed on the map. With a second area 820 for indicating packets, location information (latitude, longitude, altitude) and received signal strength (RSSI), parameters for performing a wireless signal performance test are set, and the connection and status of each plug-in It may include a third area 830 for confirming .

Through the third area 830, a test ID (TID) for identifying the test, a vehicle ID (VEHICLE ID) for identifying a vehicle, and a device ID (DEVICE ID) for identifying a V2X communication system to be tested is given, and a wireless signal to be tested can be selected.

In addition, the user activates the transmit/receive mode (TX MODE, RX MODE) by radio signal (RADIO A, RADIO B), sets the channel (CHAN), sets the transmit/receive antenna (TX ANT, RX ANT), You can set the transmit/receive control (TX CTRL), or set the rate (RATE), length (LEN), and interval (INTERVAL) of packets.

And in the lower part of the third area 830, the connection to the outside through the input/output plug-ins of the data collector 110 as described above may be set and controlled, respectively, and the connection state of each plug-in and information transmission The status can be checked.

The "PKT_SETUP" packet transmitted from the data collector 110 to the V2X communication system 10 includes parameters set through the third area 830 of the "Logger UI" as described with reference to FIG. VPCONF" may be delivered to the V2X communication system 10 together with the packet.

After that, the data collector 110 transmits a "PKT_STAT" packet to the V2X communication system 10 to request confirmation of the operating state (normal operation or not) of the V2X communication system 10, and the V2X communication system (10) may transmit a packet (VPSTAT) including information on its operating state (normal operation) to the data collector 110 .

The operation status check request from the data collector 110 as described above to the V2X communication system 10 and the operation status information response from the V2X communication system 10 to the data collector 110 may be performed periodically.

After that, when the data collector 110 transmits a "PKT_START" packet for notifying the start of data collection to the V2X communication system 10, packet data (PKT_TX, PKT_RX) and GPS packets transmitted and received by the V2X communication system 10 The data PKT_GPS may be transmitted to and collected by the data collector 110 .

And when the data collector 110 transmits a "PKT_STOP" packet for notifying the end of data collection to the V2X communication system 10, data transmission from the V2X communication system 10 to the data collector 110 may be terminated.

According to another embodiment of the present invention, the data collector 110 further includes a function of generating a radio signal to be used for testing of the V2X communication system 10, from the data collector 110 to the V2X communication system 10 ), it is possible to easily perform tests for high-risk or repetitive situations by the radio signal transmitted.

9 is a block diagram for explaining an embodiment of the configuration of a data collector having a wireless signal generation function, the illustrated data collector may be implemented in the form of a test box 150 including a V2X communication module 151 have.

Referring to FIG. 9 , the test box 150 may be configured to include a V2X communication module 151 , a GPS module 152 , a wireless communication module 153 and a plurality of antennas for wireless signal transmission and reception.

The V2X communication module 151 is configured to include a plurality of layers according to the vehicle communication standards as described above, and may generate a wireless signal including a packet message for vehicle communication and transmit it through an antenna.

Since the configuration and operation of the V2X communication module 151 may be the same as that of the V2X communication system 10 as described above, a detailed description thereof will be omitted.

The wireless signal generated by the V2X communication module 151 is a virtual generated so that it can be used for repetitive tests according to vehicle communication standard standards (eg, IEEE 802.11p, IEEE 1609.x and SAE J2735). of packet messages.

Meanwhile, the GPS module 152 may generate a GPS signal including virtual vehicle location information and transmit it through an antenna.

The wireless signal generated by the V2X communication module 151 and the GPS signal generated by the GPS module 152 may be received in V2X communication systems in the vicinity including the V2X communication system 10 .

In this case, the data for the wireless signal and the GPS signal received from the V2X communication system 10 may be collected into the test box 150 through the input interface 154 using a communication method such as Ethernet, CAN, or USB. have.

The wireless signal and GPS signal data collected by the test box 150 may be stored in the database 155 and uploaded to the server 120 through the wireless communication module 153 using a communication method such as LTE or WIFI. .

In addition, various sensing data from an external environment may be additionally collected through the sensor interface 156 provided in the test box 150 .

10 is a block diagram illustrating an embodiment of the configuration of a server, wherein the server 120 includes a database 124 , a management module 121 , a data receiving unit 122 , and an output data generating unit 123 . can be configured.

Referring to FIG. 10 , wireless signal data collected by the data collector 110 and uploaded to the server 120 may be stored in the database 124 .

The management module 121 includes an authentication management unit (Auth. manager) for managing user authentication, etc., a data management unit (Data) for creating a space to store new test data and giving an ID (TEST ID) for identifying the test manage), a rule manager that manages an analysis rule for extracting data of interest, and a report manager that organizes data for a plurality of tests and provides a report have.

On the other hand, the data receiving unit 122 includes a decompressor, an authenticator, a validator, a filter and a field mapper, the control of the management module 121 data can be collected according to

The output data generating unit 123 includes a query receiving unit for receiving the data collected through the data receiving unit 122 and an output data configuring unit for configuring the input data in an output data format for transmitting the input data to the client 130 . can do.

The server 120 first generates a test ID (TEST ID) for identifying the test through the management module 121, and receives the data collected from the data collector 110 through the data receiving unit 122 to receive the client ( 130) can be configured to transmit data.

For example, the decompression unit of the data receiver 122 selectively decompresses the raw data collected by the data collector 110 , the authenticator authenticates the user, and the inspection unit performs the original You can check the raw data value range and test ID.

Then, after invalid data is filtered out by the filter, the field mapping unit may optimize the data field and reconstruct the data structure using the test ID (TEST ID) and the vehicle ID (VEHICLE ID).

The data output from the field mapping unit may be composed of basic data to be transmitted to the client 130 by the output data generation unit 123 .

Meanwhile, the basic data configured as described above may be stored in the database 124 after being classified for each test ID.

According to another embodiment of the present invention, only interest data from among the basic data configured as described above may be extracted by an analysis rule and transmitted to the client 130 .

Referring to FIG. 11 , the server 120 receives information about an interest section from which data is to be extracted from the client 130 (step S1100 ).

The information on the interest section may be generated by the user in the client 130 as an analysis rule for setting the interest section, and may be stored and managed in the database 124 of the server 120 . .

Meanwhile, the interest section information may include an identification name, an application type, a movement pattern type, transmission vehicle information, reception vehicle information, and a script.

Here, the identification name is a rule name for identifying a corresponding rule, and the application type and mobility type indicate the type of tag to be generated as a result of the rule. These are for identification purposes, and the transmission vehicle information (TX Vehicle) indicates a vehicle to transmit a wireless signal, and the reception vehicle information (RX Vehicle) indicates a vehicle to receive a wireless signal.

A script is for defining the interest section, and may be a combination of commands according to a predetermined grammar for conditions for transmission/reception vehicles.

In addition, in addition to the method defined by the script as described above, the region of interest is designated by designating a region in a specific shape on a map on which the moving positions of vehicles are displayed, or a meaningful region of interest is automatically designated. may be

The rule manager of the server 120 extracts data corresponding to the interest section from among the wireless signal data collected by the data collector 110 by using the section of interest information received in step S1100 (step S1110).

In step S1110, the rule management unit applies the analysis rule selected by the user in the client 130 among the plurality of analysis rules to basic data, the specific test ID (TEST ID) stored in the database 124 From among the data, only data corresponding to the ROI according to the analysis rule may be extracted.

The ROI data extracted in step S1110 is transmitted to the client 130 (step S1120).

In the above, the present invention has been described with reference to FIG. 11 by taking as an example that the server 120 extracts data corresponding to the section of interest from the wireless signal data collected by the data collector 110 and transmits it to the client 130, The present invention is not limited thereto.

For example, when a test ID (TEST ID) to be analyzed is selected by the client 130 , the server 120 is connected to the selected test ID (TEST ID) and performs analysis of the wireless signal data stored in the database 124 . The program code and the analysis rule for this are transmitted to the client 130, and the client 130 filters the wireless signal data on the browser according to the analysis rule transmitted from the server 120. It is possible to extract the wireless signal data to be analyzed.

According to another embodiment of the present invention, in order to provide a report analyzing the results of a plurality of tests, the wireless signal data stored in the database 124 of the server 120 after being divided into a plurality of tests is one It may be arranged as report data and delivered to the client 130 .

Referring to FIG. 12 , the server 120 receives information about a plurality of tests to be organized into a report from the client 130 (step S1200 ).

The information on the plurality of tests may include test IDs (TEST IDs) selected by the user in the client 130. In addition, information on the analysis method and information on the distance grouping value are provided to the client in step S1200. may be received from 130 to the server 120 .

Here, the information on the analysis method indicates which factor (for example, any one of simple PER, moving average value PER, and predicted PER) is to be analyzed based on, and the distance grouping value indicates how many units to group the distances. can indicate whether

The rule management unit of the server 120 organizes the radio signal data collected by the data collector 110 while the plurality of data is performed into report data by using the information on the plurality of tests received in step S1200. (Step S1210).

Meanwhile, the radio signal data arranged in step S1210 may be interest section data extracted by applying an analysis rule in step S1110 of FIG. 11 .

Thereafter, the report data arranged in step S1210 is transmitted to the client 130 (step S1220).

As described above, using the wireless signal data transmitted to the client 130 , real-time tracking or data analysis may be performed in the client 130 .

For example, the real-time tracking may track the location of a vehicle in real time for a test being performed and show key performance indicators such as packet error rate (PER) and received signal strength (RSSI).

In addition, the data analysis may visualize the collected data based on various performance indicators and extract data of interest.

In the above description, a vehicle-to-X communication system analysis method and system according to an embodiment of the present invention have been described using the North American Vehicle Communication Standard (WAVE) as an example, but the present invention is not limited thereto.

For example, the vehicle-to-X communication system analysis method and system according to the present invention may be applied to various vehicle communication standards such as Europe or Japan.

The above-described methods according to an embodiment of the present invention may be produced as a program to be executed by a computer and stored in a computer-readable recording medium. Examples of the computer-readable recording medium include ROM, RAM, and CD-ROM. , magnetic tape, floppy disk, and optical data storage devices.

The computer-readable recording medium is distributed in a network-connected computer system, so that the computer-readable code can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the method can be easily inferred by programmers in the art to which the present invention pertains.

As such, those skilled in the art to which the present invention pertains will understand that the above-described technical configuration of the present invention may be implemented in other specific forms without changing the technical spirit or essential characteristics of the present invention.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the foregoing detailed description, and the meaning and scope of the claims And all changes or modifications derived from the equivalent concept should be construed as being included in the scope of the present invention.

Claims (20)

In the analysis method for testing the V2X communication system in the server that can communicate with the client,
In the server, collecting data for a wireless signal transmitted or received in the V2X communication system from the V2X communication system;
receiving, at the server, a rule for setting an interest interval from the client;
extracting, at the server, INTERIOR data from among the collected radio signal data based on the rule received from the client; and
Including; transmitting the extracted interest interval data to the client;
The rule includes an application type, a movement pattern type (Mobility Type), transmission vehicle information, reception vehicle information, and a script,
vehicle-to-X communication, characterized in that the application type and the movement pattern type are used to distinguish a type of a tag to be generated as a result of the rule, and the script is a combination of commands for defining a section of interest System analysis method. According to claim 1,
The wireless signal data collected from the V2X communication system is a vehicle-to-X communication system that includes received signal information, a vehicle communication message, logic data calculated using the vehicle communication message, and an application result value determined using the logic data. Way. The method of claim 2, wherein the received signal information is
A vehicle-to-X communication system analysis method including a received signal strength indicator (RSSI) and a channel congestion ratio (CBR). The method of claim 2, wherein the vehicle communication message is
It includes basic safety message (BSM) data received from one or more other V2X communication systems, wherein the basic safety message (BSM) includes at least one of time, position, speed, direction, brake system status, and vehicle size. A vehicle-to-X communication system analysis method comprising. 3. The method of claim 2, wherein the logic data is
It is calculated using vehicle communication messages received from one or more other V2X communication systems, and object classification (TC, Target Classification), Collision Time (TTC, Time-to-Collision), Intersection time (TTI, Time-to-Intersection) And a vehicle-to-X communication system analysis method comprising at least one of a distance to intersection (DTI, Distance to Intersection). The method of claim 2, wherein the application result value is
Forward Crashing Warning (FCW), Emergency Electronic Brake Lights (EEBL), Blind Spot Warning (BSW), Lane Change Warning (LCW) and Intersection Movement Assist ( A method of analyzing a vehicle-to-X communication system including at least one of IMA, Intersection Movement Assist. According to claim 1,
In the server, collecting vehicle location information; further comprising,
The location information is synchronized with the collected wireless signal data and is transmitted to the client in a vehicle-to-X communication system analysis method. According to claim 1, wherein the collecting step
receiving, in the server, setting parameters for testing the V2X communication system;
In the server, the step of checking whether the normal operation of the V2X communication system; and
A vehicle-to-X communication system analysis method comprising a; in the server, receiving the transmission/reception packets of the V2X communication system. According to claim 1,
generating, in the server, a wireless signal to be used for testing the V2X communication system; and
In the server, transmitting the generated wireless signal to the V2X communication system; Vehicle-to-X communication system analysis method further comprising a. delete delete The method of claim 1, wherein the delivering step
receiving, at the server, information on a plurality of tests;
arranging, in the server, the wireless signal data collected by performing the plurality of tests into report data; and
Transmitting, in the server, the organized report data to the client; vehicle-to-X communication system analysis method comprising a. According to claim 1,
A vehicle-to-X communication system analysis method in which at least one of a real-time tracking of a test result being performed and a performance analysis of a completed test result is processed using the wireless signal data transmitted to the client. A computer program stored in a medium for executing the method of any one of claims 1 to 9, 12 and 13. delete In the analysis system for testing the V2X communication system,
A data collector for collecting data on a wireless signal transmitted or received in the V2X communication system and location information of the vehicle connected to the V2X communication system and positioning system provided in the vehicle using wired/wireless communication; and
Receives the radio signal data collected by the data collector and stores it in a database, receives a rule for setting an interest section from a client, and a section of interest among the collected radio signal data based on the rule received from the client A server that extracts data and delivers the extracted ROI data to the client;
The rule includes an application type, a movement pattern type (Mobility Type), transmission vehicle information, reception vehicle information, and a script,
The analysis system, characterized in that the application type and the movement pattern type are used to distinguish a type of a tag to be generated as a result of the rule, and the script is a combination of commands for defining a section of interest. 17. The method of claim 16,
The wireless signal data collected from the V2X communication system is an analysis system including received signal information, a vehicle communication message, logic data calculated using the vehicle communication message, and an application result value determined using the logic data. 17. The method of claim 16, wherein the data collector is
A V2X communication module for generating a wireless signal to be used for testing the V2X communication system and transmitting it to the V2X communication system; Analysis system further comprising a. delete 17. The method of claim 16, wherein the server
An analysis system for receiving information on a plurality of tests from the client, organizing data corresponding to the plurality of tests among the wireless signal data stored in the database, and transmitting the data to the client.

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