KR20200070954A - Method and appratus for measuring characteristics of wireless service along a subway route through a plurality of personal communication terminals - Google Patents

Abstract

The present invention provides a method for determining wireless service characteristics while identifying locations on a train operation route using a plurality of wireless communication terminals. The method comprises: a first step of individually giving a confidence score to access points installed at each train station and providing the access point mapping information registered in association with a corresponding train station to a plurality of wireless communication terminals; a second step of receiving access point status information including access points found through nearby search, train stations identified based on the access point mapping information, and an access point list of the identified train stations from the plurality of wireless communication terminals; and a third step of updating the access point mapping information based on the received access point status information. In the third step, the access point mapping information is updated in a way that the given confidence score is increased for the access points that are also in the access point list included in the random access point status information among the access points registered in the access point mapping information in association with the train stations designated in the received random access point status information.

Description

Method and apparatus for identifying wireless service characteristics along a train route using a plurality of personal communication terminals {Method and appratus for measuring characteristics of wireless service along a subway route through a plurality of personal communication terminals}

The present invention provides a method and method for enabling a user to grasp characteristics of a wireless service, such as the quality of a wireless service provided along a route in which a train is running, and the resulting electromagnetic wave strength, using communication terminals carried by people. It is about the device for.

In the case of trains operating in large cities, most of the operation routes are underground. Since the underground space does not reach a signal for a wireless service such as a mobile communication network, wireless communication is provided to users by installing a repeater separately or by installing access points (AP) forming a local communication network such as a Wi-Fi network. It provides services.

In addition, the characteristics of wireless services such as the quality provided by the installed devices (for example, service speed, signal shaded area, etc.) and the intensity of electromagnetic waves generated by their wireless signals are periodically measured and managed. . For example, in places with poor service quality, additional repeaters or access points are installed, or backhauls of Wi-Fi networks are added, and the electromagnetic wave intensity caused by radio signals regulates the standards for those places. If it goes over, the output of the radio signal to be transmitted is reduced.

However, by measuring the characteristics of the wireless service on the ground where GPS signals are received, and acquiring the information of the measurement location, it is possible to easily identify the characteristics of the wireless service by dividing it into areas or places, etc. Since GPS signals cannot be received, the wireless service characteristics cannot be identified while specifying the location using the GPS signals.

Accordingly, operators, etc., which provide wireless communication network services to the underground space, allow the measurement person to load specific measurement equipment on an electric vehicle to measure desired wireless service characteristics while being operated. A signal is manually applied so that a specific mark that can be checked ex-post as a platform or tunnel section of a train station is recorded in the measurement information.

Then, after the measurement is completed, by comparing the order of the specific marks so authorized and the measured travel section with each other, which mark is for which train station, a series of measurement information is identified for which train station.

However, such a measurement method requires a lot of maintenance cost because it requires expensive equipment and manpower for measurement, and because it is measured by manpower, it is impossible to grasp the wireless service characteristics in real time. It is difficult to respond immediately to harmful levels of electromagnetic waves.

In addition, since there may be a mistake in an operation that a measurement person inputs to the measurement equipment in order to grasp the place of the measurement information ex post, measurement information may not be accurately matched to a specific place. In order to eliminate this error, it is repeatedly measured for the same train section, which also leads to inefficiencies in the operation of human resources.

An object of the present invention is to provide a method and apparatus for automatically identifying characteristics of a wireless service along a train operating path using a communication terminal carried by an individual while specifying a place.

Another object of the present invention is to provide a method and apparatus for automatically identifying characteristics of a wireless service while distinguishing between a platform and a tunnel on a train operating path using a communication terminal carried by an individual.

Another object of the present invention is to provide a method and apparatus for real-time identification of characteristics of a wireless service by collectively using a communication terminal carried by an individual without special measurement equipment.

Another object of the present invention is to provide a method and apparatus for accurately identifying a train station as a measurement location from unique information of connection points found by searching.

Another object of the present invention is to provide a method and apparatus for managing access point-specific information so that a train station that is a measurement location can be accurately identified in spite of fluctuations in installation details of access points.

The object of the present invention is not limited to the object explicitly described above, and it is of course included in the object to achieve an effect that can be derived from the following detailed and exemplary description of the present invention.

According to an aspect of the present invention, a method for identifying characteristics of a wireless service using a plurality of wireless communication terminals while identifying a location on a train operating route, individually granting a trust score for access points installed in each train station The first step of providing the connection point mapping information registered in connection with the corresponding train station to a plurality of wireless communication terminals, and based on the connection points and the connection point mapping information found in the surrounding search from the plurality of wireless communication terminals. It comprises a second step of receiving the access point status information including the identified train station and the access point list of the identified train station, and a third step of updating the access point mapping information based on the received access point status information. In addition, in step 3, among access points registered in the access point mapping information in connection with a designated metro station in the received access point status information, access points that are also included in the access point list included in the current access point status information are given. The access point mapping information is updated in such a way that the existing trust score is made higher than the trust score of the access point not in the access point list.

In one embodiment according to the present invention, the third step, in connection with the metro station specified in the random access point status information, among the access points listed in the access point mapping information, to the list of access points included in the random access point status information For the missing access point, the access point mapping information is updated in a manner that reduces the reliability score. In the present embodiment, in the third step, when the reduced confidence score is lower than a predetermined lower limit score, the access point mapping information is updated by deleting registration of the designated train station in the access point mapping information for the access point. You may.

In one embodiment according to the present invention, if the step 3 includes a connection point that is included in the status information of the arbitrary access point but is not listed in the connection point mapping information for the designated train station, the specified initial score is assigned to the access point. The access point mapping information is updated in a manner newly assigned to the access point mapping information in connection with the designated train station by assigning it as a trust score.

In an embodiment according to the present invention, in step 3, among the access points registered in the access point mapping information in connection with the designated subway station in the current access point status information, the access point list included in the current access point status information If the confidence score assigned to a connection point in Edo is greater than or equal to a predetermined limit score, the confidence score is not changed.

In an embodiment according to the present invention, in the step 3, in the access point status information received using the designated train station as the same identification station, the time points at which the designated train stations are identified are predetermined time widths (for example, each other). , 60 seconds, 90 seconds, etc.) Only one of the group of access point status information in the end is designated as the arbitrary access point status information reflected in the update of the access point mapping information, and the remaining access point status information of the unspecified group is ignored. This is to reflect current access point status information having a time difference equal to or greater than the predetermined time width at the time of identification of the train station in the access point mapping information, respectively.

In one embodiment according to the present invention, if the method receives, by one or more of the plurality of wireless communication terminals, misidentification reporting information designating the same random metro station, one or more included in the misidentification reporting information For the access point, it further comprises the step of deleting the registration for the random train station in the access point mapping information.

In one embodiment according to the present invention, the method includes a wireless service including information on any train stations identified based on the access point mapping information and access points found in the surrounding search from the plurality of wireless communication terminals. It further comprises the step of receiving the measurement information on the characteristics, and identifying the wireless service characteristics along the train route from the received measurement information while specifying the measurement location.

In one embodiment according to the present invention, the measurement information regarding the wireless service characteristics may include speed-related information measured while receiving data of a file through a specific wireless communication network in the identified any subway station. In this case, the grasping step is based on the measurement information obtained by starting measurement together within a certain time span, while specifying the measurement location as a platform of any identified metro station, and identifying the specific wireless communication network. It is possible to grasp the service speed of a backhaul to which connection points to form are connected.

In another embodiment according to the present invention, the measurement information regarding the wireless service characteristics may include strength information for a radio signal of a mobile communication network obtained by measuring in the identified platform or a tunnel section extending from the subway station. have. In this case, the grasping step is triggered by the wireless signal of the mobile communication network while specifying the measurement location to either the platform of the identified train station or both tunnel sections leading from the train station based on the measurement information. It is possible to grasp the intensity of electromagnetic waves. And, in the present embodiment, the step of determining, based on the identification order of at least two identified train stations included in the measurement information, either one of the two tunnel sections for the identified train station to the measurement location It is specified by section.

According to another aspect of the present invention, one method for identifying characteristics of a wireless service in a train operating path using a plurality of wireless communication terminals is a wireless service characteristic for an arbitrary section on a train operating path from an arbitrary wireless communication terminal. Step 1 of receiving measurement information about the arbitrary section along with the information on the communication network, and if the received measurement information indicates an outlier exceeding a predetermined criterion, wireless service characteristics for the arbitrary section It comprises two steps to enhance the measurement of. Here, in step 2, among a plurality of wireless communication terminals measuring and providing wireless service characteristics on a train operating path, the wireless communication terminal is located in a section closer to a predetermined range than the predetermined section and proceeds to the random section. And a step of transmitting a measurement enhancement command for increasing the frequency of measurement related to wireless service characteristics to the selected wireless communication terminal.

In one embodiment according to the present invention, the measurement enhancement command may include information on a section in which a measurement with increased frequency should be ended.

In one embodiment according to the present invention, the section is a section of a platform or a section of a tunnel, and the predetermined range is designated as a section between the arbitrary section and a specific number of sections.

According to another aspect of the present invention, a terminal capable of accessing and communicating with a plurality of wireless communication networks is configured to transmit and receive data with an external server using any one communication network in the plurality of wireless communication networks. In response to the request by sending a data request to a specific external server through the transmission unit and the transmission/reception unit, a trust point is individually assigned to the connection points installed in each train station to map the access points registered in connection with the train station. The terminal is configured to receive information, and based on the number of trust points assigned to the subway stations connected to the access points listed in the access point mapping information and the number of trust points assigned to the access points found in the surrounding search. It identifies the train station currently located, and when the train station is identified, configures the status information including access points found in the vicinity based on the identification time, and includes a management unit that provides the specific server through the transceiver. do.

In one embodiment according to the present invention, if the management unit has a plurality of subway stations connected to the access point mapping information registered in the access point mapping information among the access points found in the surrounding search, the access point showing the superiority in the trust score is linked The train station in question is identified as the train station currently located.

In one embodiment according to the present invention, when the management unit configures the status information, it collects all the access points found in a periodic search within a predetermined period of time (for example, 30 seconds, 45 seconds, etc.). do.

In one embodiment according to the present invention, when the management station is located, the current station is identified, the train station identified immediately before the identification, and the existing train stations are identified based on the information about the train stations currently located Determine whether there is an error.

In another embodiment according to the present invention, when the management station, the currently located train station is identified, the time taken to actually move from the train station identified immediately before that, is the expected time between each train station on the already equipped train line. If the difference between the currently identified train station identified on the timetable and the expected time required between the train station identified immediately before is shorter than a predetermined allowable difference, it is determined that the identification of the train station currently located is an error.

In the determination as to whether there is an error in the train station identification, if the identification of the train station currently located is determined to be an error, the management unit incorrectly identifies the access point registered in the access point mapping information that is the basis of the misidentification. Report along with the train station to the specific server.

In an embodiment according to the present invention, when the management station is located, when the currently located train station is identified, if the identification station is a previously identified train station and two or more interval reciprocal numbers (驛數), between each train station on a previously equipped train line Based on the interval reciprocal information, a train station having no identification is determined between the currently identified train station and the immediately preceding train station. In addition, in the present embodiment, the management unit, the time required to actually move from the previously identified train station to the currently identified train station, and the estimated time required between each train station on the train line already provided, respectively, the Determine a specific point in time at which the terminal was located at the determined missing station based on the estimated time required between the determined missing subway station and the currently identified train station or the immediately preceding identification station and the estimated time required between the immediately preceding identification station and the currently identified train station, By reporting the access point found by the search within a certain time based on the determined time point to the specific server together with the determined missing station, new access points can be registered for the station with the missing identification.

In one embodiment according to the present invention, whenever the management station is located, the current station is identified, acquires measurement information on wireless service characteristics based on the identification time point, and obtains the obtained measurement information from the corresponding identification station In addition, it is provided to a remote server through the transceiver.

In one embodiment according to the present invention, the measurement information is from one remote location through a specific wireless network that provides a wireless service locally within a limited place, one of the wireless communication networks, based on the identification time point. This is information about the data reception speed measured by receiving the data. Alternatively, it may be information of signal strength measured for a wireless signal by a communication network supporting cellular communication, which is another one of the wireless communication networks, based on the identification time point.

In an embodiment according to the present invention, when an arbitrary arrival station input from a user is set in the terminal, the management unit causes the terminal to perform when the identified train station is the arrival station or a station adjacent to the arrival station It is also possible to cause a notification signal to be generated.

According to another aspect of the present invention, a device capable of providing programs executed in another device through an interface, an interface capable of transmitting and receiving data to and from the outside, and the data provided to the outside through the interface, It comprises a data storage means containing a program object to be executed in the wireless terminal. Here, the program entity, when executed in a wireless terminal capable of accessing a plurality of wireless communication networks, sends a data request to a specific external server in response to the request, and individually for access points installed in each subway station. A function to receive the access point mapping information registered in connection with the corresponding train station by assigning a trust score to the station, and the access points listed in the connection point mapping information among the access points found in the surrounding search are linked to the station. Based on the number of trust points assigned to the existing access points, the function of identifying the train station where the terminal is currently located, and when the train station is identified, constitutes the status information including the access points found in the vicinity based on the identification time point. It consists of program codes for performing functions provided to the specific server.

At least one embodiment of the present invention described above, or the present invention described in detail with reference to the accompanying drawings below, is characterized by continuous and collective wireless service characteristics in the route of the train by wireless communication terminals carried by many people. By being measured, it is possible to grasp the quality of wireless service speed provided at each train station and the electromagnetic wave intensity along the train's operation path in real time from the center.

Therefore, it is possible to reduce the cost of equipment and manpower that is input to understand the characteristics of the wireless service, and to quickly change the situation of changes in the characteristics of the wireless service, for example, service failures, exceeding the standards for wireless signals. Make it possible to cope.

In addition, the present invention, in the collective measurement along the train operating path by any wireless communication terminals, ensures accurate identification for each measurement place, for example, a train station, and also, an access point where an identification error may occur Regarding the change of the installation situation, by automatically reflecting the changed situation, there is no need for artificial effort and time for identification of the place. And, by using the location identification according to the present invention, that is, the subway station identification, where the accuracy is guaranteed, individuals can receive a notification about arriving at a desired destination station through their communication terminal when using the train. For this reason, it is very convenient to focus on a screen such as a smartphone, a tab, or a laptop without being disturbed by noise, etc. by wearing earphones, earphones, or headphones without paying attention to the arrival station.

1 illustrates an entire system to which a method for identifying characteristics of a wireless service along a train operating path using a plurality of personal communication terminals according to the present invention is applied,
Figure 2a, according to an embodiment of the present invention, illustrates a configuration of a wireless communication terminal is implemented a method for measuring the characteristics of the wireless service along the train route,
Figure 2b, according to an embodiment of the present invention, a method for measuring the characteristics of a wireless service along a train operating path, the logical operation of the intelligent wireless service measurement agent (agent) that is performed proactively in the wireless communication terminal of Figure 2a The configuration is illustrated,
FIG. 3 shows an example of a link map of a station-to-connection point in which access points fixedly installed in train stations are registered according to an embodiment of the present invention in a manner in which a trust score for each station is assigned,
4, according to an embodiment of the present invention, based on the reverse-access point linkage map and the APs found, identifies the current metro station and provides the discovered AP information necessary for updating the linkage map to an external server This is an example of a flow chart
5 is a diagram schematically showing a method of determining a corresponding train station when connection points belonging to different stations are found in an arbitrary train station according to an embodiment of the present invention,
6 is a diagram schematically showing a method of constructing search AP status information reporting to an external server for access points found in any train station according to an embodiment of the present invention,
7 is a diagram schematically showing a method of selecting status information to be used for updating a link map of a reverse access point in search AP status information provided from personal wireless communication terminals according to an embodiment of the present invention;
8 is a diagram schematically showing an example of a method of updating a current reverse-access point linkage map based on representative status information selected according to FIG. 7 according to an embodiment of the present invention,
FIG. 9 shows an example of a situation in which the access points installed in one train station are inconsistent with the registration information of the link map of the station-access point because the transfer points are transferred to another train station,
10A and 10B show examples of station chain information, which are shown as neighboring relationships with respect to all train stations on a train line, according to embodiments of the present invention, respectively.
11 is a configuration example of a timetable between stations indicating the time required for moving between train stations according to an embodiment of the present invention, and based on the actual travel time between the identified train stations, discriminates whether the train station is misidentified How to do it together,
12 schematically illustrates a method of modifying a current station-access point linkage map by reflecting the misidentification when a misidentification of a train station is reported in an individual wireless communication terminal according to an embodiment of the present invention. Is shown,
13 is, according to an embodiment of the present invention, if the train station identification is not possible due to the change in the installation of the access point, if an identification omission occurs, so that the missing station can be identified, the interval reciprocal between each station and the time required between stations It shows an example of the timetable between stations, which is recorded and composed.
14 is a diagram schematically showing a method of estimating access points installed in a missing station and creating a list of access points when occurrence of a missing station is confirmed according to an embodiment of the present invention,
FIG. 15 is a diagram of speed-related measurement information created to identify a train station in an individual wireless communication terminal and report the service speed of a Wi-Fi network measured at the station to an external server according to one embodiment of the present invention. It shows the configuration example,
16, according to an embodiment of the present invention, the communication terminals carried by users who are riding the same electric vehicle, the file to measure the service speed of the Wi-Fi network at the same time in the same train station. This is a drawing showing the request and receiving the data.
17 is a diagram illustrating a relationship between time and reference points used for measuring the strength of a wireless signal in a cellular network in a wireless communication terminal being moved by an electric vehicle, according to another embodiment of the present invention. It is a drawing showing,
18 is, according to another embodiment of the present invention, the electromagnetic wave-related measurement information prepared to identify the train station in the individual wireless communication terminal and report the wireless signal strength of the cellular network measured in the platform and the tunnel to an external server. It shows an example of the composition of
19 is a diagram schematically showing a method for allowing other wireless communication terminals to perform enhanced measurement on a measurement interval in which a measurement value indicating an abnormality by the wireless communication terminal 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.

1 is a diagram illustrating an entire system to which a method for identifying characteristics of a radio service along a train operating path using a plurality of personal communication terminals according to the present invention is applied, and a wireless communication network fixedly installed in each train station , For example, the access points of the Wi-Fi network (sAP _{i_j} , i=1,2,.., j=1,2,..) and each train station (SS _{_i} , i=..,N-1, N,N+1,..) and the station-access point information server 200 that manages by linking and managing information on access points installed in the station, and measurement information in which information measured about characteristics of a wireless service is intensively collected The server 210 and wireless communication terminals, such as a smartphone or pad, which are not shown in the figure and carried and carried by passengers using a train, and provide cellular wide area mobile communication services to these wireless communication terminals. Cellular network 201, Wi-Fi networks (202 _i , i=1,2,..) provided by access points installed at each train station, and connecting these Wi-Fi networks with a backbone network It consists of a backhaul (backhaul) 203 that is a relay link.

And, according to the present invention, a wireless communication terminal performing a method of measuring characteristics of a wireless service while identifying a location based on access points found by a search is configured as illustrated in FIGS. 2A and 2B.

The wireless communication terminal 100 whose configuration is illustrated in FIG. 2A modulates or demodulates a signal according to a designated method of the cellular network 201 and transmits and receives a cellular modem 1a (processing module for RF signals) And a cellular codec 1b that encodes data or decodes the encoded data according to the communication protocol adopted in the cellular network 201, and the Wi-Fi network. (202 _i , i=1,2,..) Wi-Fi modem 2a (which is a component that includes a module for processing RF signals) that modulates or demodulates signals according to a specified method to transmit and receive signals to and from a corresponding communication network. , Wi-Fi codec (2b) for encoding data or decoding an encoded data frame according to the communication protocol adopted in the Wi-Fi network (202 _i , i=1,2,..), video, text, etc. A display panel 5 for display, a display driver 4 driving the display panel 5 so that arbitrary data is visually displayed on the display panel 5, and attached to the front surface of the display panel 5 A touch sensor 6a, a keypad 6b equipped with keys and/or buttons, and detecting user input and/or selection on the touch sensors 6a and keypad 6b The input control unit 6 outputs corresponding input information, and the data is appropriately transmitted to or received from the corresponding component among the components so that an operation according to the input information from the input control unit 6 is performed. The main control unit 10 for controlling the display driving unit 4 and the operation of the main control unit 10 or executed by the control unit for controlling the display driving unit 4 to display a UI screen for selecting a result or a user's desired operation. It includes a memory unit (7) that provides a data storage space required for a process or the like.

Then, the main control unit 10, by executing the command codes such as firmware (firmware) provided to itself, driving the hardware resources of the wireless communication terminal 100, the appropriate signal and / or information exchange with the resource An operating system 100a (Android, IOS, Windows, or an operating system specialized for the present invention) to perform the intended function to perform the intended function, and also equipped with an intelligent wireless service measurement agent 110 (IWSMA: Intelligent Wireless Service Measuring Agent) (hereinafter abbreviated as "measurement agent"). By executing at least a part of the command codes, the measurement agent 110 enables the measurement of the characteristics of the wireless service and the reverse-connection point information. Based on the station-access point connection map provided from the server 200, by identifying the metro station of the measured point, and whether the platform or tunnel, the measured information together with the identified place information, the cellular network 201 or Wi -Fi network (202 _i , i = 1,2,..) to provide to the measurement information server 210, and also, the connection status of each station to the station-the connection point map to accurately reflect the installation An operation of providing status information of access points found in the vicinity to the reverse-access point information server 200 is performed.

The measurement agent 110, as a process or application (hereinafter abbreviated as'App') implemented in the wireless communication terminal 100, as illustrated in FIG. 2B, operates the It may be provided in the form of software consisting of program codes executed based on the system 100a. When provided in the form of software, the measurement agent is provided in the mass storage means through a normal on-line purchase process or the like from a specific server connected to a communication network through a communication means provided with a mass storage means It may be executed after the 110 is downloaded and installed in the wireless communication terminal 100. In some cases, a component that performs at least some of the functions of the measurement agent 110 described in detail below, in the form of a middleware, or a platform on which the apps are based, or the The wireless communication terminal 100 may be installed as a part of the operating system 100a. Alternatively, since the measurement agent 110 includes a hardware configuration, the hardware may perform some of the functions described in detail below. Therefore, in various embodiments according to the present invention, the measurement agent 110 in which the configuration and operation method are described is not limited by the form of implementation or the type of resource used.

As illustrated in FIG. 2B, the measurement agent 110 periodically measures characteristics of a wireless service, such as a service speed of a Wi-Fi network or an intensity of electromagnetic waves due to a radio signal, while the reverse access point of a remote site Provides the measured information together with the place information (train station, platform/tunnel) identified on the basis of the station-access point link map received from the information server 200 and the searched access point information, and provides the measured information to the measurement information server 210. Measurement service management unit 111 (hereinafter, abbreviated as'management unit') configured to configure the status information of access points from the information of the identified train stations and searched access points to provide to the station-access point information server 200. , Data transmission/reception unit 112 for performing data transmission and reception with a remote location, and graphic, text, icon, image, etc. displayed on a screen for an interface with a user while being displayed on an appropriate location. The UI processing unit 113 that receives the user's input is included as a sub-process.

The management unit 110, the data transmitting and receiving unit 112 and the UI processing unit 113, in some cases of operations described in detail below, provide an API (Application Program Interface) provided by the operating system 100a. Through, the hardware components illustrated in FIG. 2A and specific functions provided by the operating system 100a (for example, screen display of information or menu, communication with the outside based on a protocol, communication status check, hardware By requesting status confirmation, etc.), the operation is performed. Among the various functions that the operating system 100a has to perform, the API must be called in accordance with the format of a command or argument to execute a function desired by an execution object such as an app. Information interface.

The configuration of the wireless communication terminal 100 illustrated in FIG. 2A is only one example for explaining concretely and exemplarily an embodiment for helping to understand the concept and subject of the present invention, and the concept according to the present invention The wireless communication terminal specifically implementing the subject matter may further include components of various functions not illustrated in FIG. 2A or exclude some of the illustrated components.

Hereinafter, according to the present invention, a method for grasping the characteristics of a radio service along a train operating path using a plurality of personal communication terminals is the same as the radio communication terminal 100 in which the measurement agencies 110 are provided respectively. A plurality of wireless communication terminals capable of functioning (in this specification, the term'specific terminal' is used for these wireless communication terminals), the reverse-access point information server 200, and the measurement information server Various embodiments implemented by operations based on mutual information exchange between 210 will be described in detail.

First, the measurement agent 110 in the wireless communication terminal 100, which is one of a plurality of unique terminals, becomes the station when the designated specific time (typically a randomly designated time in a time period not using public transportation). -In communication with the access point information server 200, receives the inverse-access point linkage map 300 configured as illustrated in FIG. 3 and stores it in the memory unit 7. To this end, the management unit 111 requests a data requesting a predetermined file from the reverse-access point information server 200 as a destination, for example, a communication protocol such as an HTTP request when a specific time is specified. Requests the transmission of the data to the data transmission and reception unit 112.

When this request is made, the data transmitting and receiving unit 112 calls an appropriate API to the operating system 100a to transmit a request according to the communication protocol to a communication network designated as the currently used communication network. The currently available communication network is managed by the operating system 100a, and when there is no special setting by the user, generally, when the Wi-Fi network is accessible, the Wi-Fi network is used as the communication network, otherwise the cellular network Is designated as the communication network.

When the Wi-Fi network is a use communication network, a request according to a communication protocol requested by the data transmitting and receiving unit 112 is transmitted by the operating system 100a, and the Wi-Fi codec 2b and the Wi-Fi modem ( Through 2a), when the cellular network is a use communication network, the signal is transmitted through the cellular codec 1b and the cellular modem 1a to the station-connection point information server 200 via a communication network. .

Then, the reverse-access point information server 200 reads the reverse-access point linkage map 300 configured as illustrated in FIG. 3 stored in its storage and transmits it in response to a request according to the communication protocol. . According to this response, the reverse-access point linkage map 300 is a network access resource of the wireless communication terminal 100 via the communication network (the cellular modem 1a/the cellular codec 1b) or the Wi-Fi modem 2a )/The Wi-Fi codec 2b) and transmitted to the management unit 111 through the operating system 100a and the data transmission/reception unit 112 and stored in the memory unit 7.

The operation of receiving and storing the reverse-access point linkage map 300 from the reverse-access point information server 200 described by specifying the wireless communication terminal 100 is performed by all the unique terminals.

As illustrated in FIG. 3, a reverse-connection point association map, which is mapping information for each station of access points, which each unique terminal stores in its own memory, is unique information of the access point for each access point, as illustrated in FIG. 3. It consists of the information of the train station where the access point is installed (a unique number assigned to the station, the route number to which the station belongs, the name of the train station), and a trust score for the access point. Of course, depending on the embodiment, additional information (eg, entrance and surrounding information, etc.) may be further included for each access point.

In addition, the trust score is adaptively updated based on the access point status information provided by the specific terminals searched and provided in the train station, which will be described in detail later.

When the station-connection point connection map 300 having the configuration as illustrated in FIG. 3 is first constructed, the connection points fixedly installed in each train station are searched several times by an investigator or the like, or from information provided from a train operating institution. It is identified and registered as each access point on the reverse-connection point linkage map. At this time, the trust score of each access point is assigned to the designated source score. This source score is designated as a score having a size difference from the initial score mentioned later. For example, the initial score may be 0, and the source score may be 50 or 100.

The measurement agent 110 provided in the specific terminals uses the communication resource of the wireless communication terminal 100 to provide characteristics of a wireless service, for example, a service speed of a nearby Wi-Fi network, wireless for mobile communication network services. Measuring the intensity of electromagnetic waves caused by a signal, and performing an operation of identifying a specific place using information retrieved for the station-to-access point connection map 300 and the access point stored therein, etc. After the operation of identifying a specific place, that is, which train station is being used, and the operation of the collaboration between the unique terminal and the station-access point information server 200 to ensure that the identification is always performed accurately, first, wireless The operation of measuring the characteristics of the service and providing it to the measurement information server 210 will be described.

Accordingly, the unique terminal identifies the train station based on the access point found in the vicinity, and the search AP status information necessary for updating the station-access point linkage map 300, the station according to the flow chart illustrated in FIG. A method of providing to the access point information server 200 and a method of reflecting the provided search AP status information on the current reverse-access point linkage map will be described first.

When the measurement agent 110 of the wireless communication terminal 100, which is one of the unique terminals storing the reverse-access point connection map 300 configured as described above, is activated in the corresponding terminal, the management unit 111 , Periodically requests the search for a Wi-Fi network and delivery of the searched results to the operating system 100a. When searching for a Wi-Fi network for the surroundings, the operating system 100a controls the Wi-Fi modem 2a to search for a designated signal band, and information of an access point from valid signals in the band, for example For example, information such as a service set identifier (SSID), a MAC (MAC) address, and signal strength is extracted, and information on each extracted access point is received and provided to the management unit 111.

Meanwhile, the measurement agent 110 may always operate in a background mode in a specific terminal, and the user may designate a station to arrive before using the train, so that the wireless terminal 100 is provided. The input/output unit (the display panel 5, the touch sensor 6a, the keypad 6b, and the like) may be activated when requested through an appropriate user UI (User Interface) provided by the main controller 10. In this case, when the measurement agent 110 is started up, it may request the station-access point information server 200 as described above to receive and store the latest station-access point linkage map.

When the user wants to designate an arrival station, in the state in which the measurement agent 110 is operating in the foreground mode, the arrival station through the input window provided by the UI processor 113 on the display panel 5 Specify or select from the list provided. The arrival station information thus designated, for example, the arrival station name is transmitted to the management unit 111, and the management unit 111 obtains the unique number of the station from the station-access point linkage map 300 previously stored for the arrival station. To confirm. The UI processing unit 113 provides station names for all stations registered in the stored station-access point linkage map 300, and when one station is selected from the provided list, it is assigned to the selected station The station number may be transmitted to the management unit 111.

The management unit 11, when the list of the information of the access points found in the search for the surroundings, for example, a list of MAC addresses that are AP-specific information is obtained from the operating system 100a (S41), the list It is checked whether each access point, i.e., unique information of each access point, is registered in the reverse-access point linkage map 300 stored in the memory unit 7 (S42).

If no access point on the currently acquired search AP list is not listed on the reverse-access point association map 300, the acquired search AP list is ignored and no subway station identification for the current location is performed.

If any one of the access points is registered, the unregistered access points are ignored, and it is checked whether the station unique numbers associated with it are the same for each registered access point (S43). If all are confirmed to be the same, the train station corresponding to the station's unique number is currently located while the wireless communication terminal 100 is moving with the user, the train station (herein referred to as'current train station'). It is determined as) (S45).

If the station unique numbers are not all the same, the management unit 111 selects the access point having the highest trust score among the access points registered on the inverse-access point linkage map 300 that matches the found access points. It is determined that the train station corresponding to the station identification number associated with the selected access point is the current train station (S44a).

In another embodiment according to the present invention, when the station unique numbers are not all the same, as illustrated in FIG. 5, the sum of the trust scores of registered access points corresponding to each station unique number for different station unique numbers ( 51,52) (S44b-1), and compares the sum of the obtained confidence scores with each other to determine the station identification number for which the higher total was obtained, as for the current station (S44b-2), thereby identifying the current station. It is done (53).

The unique information of one access point is unique from all other access points, and the access points designated as belonging to different train stations are identified despite the fact that the station-connection point connection map 300 is constructed by checking the fixed access points for all train stations. What can be found together in this single train station, the station-access point linkage map 300 initially lists access points that are confirmed through measurements of an investigator, etc., but thereafter, changes in the installation points of each train station are automatically changed. It is because it is registered as reflected. In the process of automatically reflecting the installation point of the connection point to the station-connection point connection member 300, moving connection points, for example, connection points installed in a train vehicle may be regarded as being fixedly installed at any train station, or may be listed. This is because some of the junctions installed in the station may be transferred to other train stations. For example, in the example of FIG. 5, the access point unique information MAC _{sAPN+1_1} and MAC _{sAPN+1_2} (54) found in the train station identified _as'shift station' are access points transferred _from'high speed terminal' station _to'shift station' It may be about

The process in which the installation points of the connection points of each train station are automatically reflected in the station-connection point connection member 300 that is mapping information for each station of the connection points will be described later.

After the current train station is determined by any one of the methods described above, the management unit 111 checks whether the identified train station is different from the train station previously identified (S47), and if not different, the current train station identification Ignores and continues the process of retrieving neighboring junctions and reverse identification based on them.

In an embodiment according to the present invention, when one train station is identified, a predetermined minimum identification time interval (this time interval may be determined as a time corresponding to 60 to 70% of the train travel time between the average adjacent stations) Within), the access points found in the search for the surroundings are used to construct the current status of the search AP and may not identify the subway station.

Even if the minimum identification time interval has elapsed, there may be a case where the currently identified station becomes the same as the station identified before the minimum identification time interval. In this case, the user carrying the special terminal boards the current electric vehicle. You may not be waiting for the train at the platform. In this state, while the user waits for boarding, the same train station identification is repeated, and the AP search status obtained in the meantime is almost the same, so only the information that is initially identified and acquired is used and then ignored. .

As described above, if the current train station identified from the list of access points found by the search differs from the previously identified train station (S47) (meaning that it is different from the previously identified train station, includes the case where there was no train station previously identified) ), the management unit 111 configures the search AP status information for the current train station, and requests the data transmission/reception unit 112 to transmit to the station-access point information server 200 (S48).

On the other hand, in confirming whether the currently identified train station is different from the previous identification station, the identified previous identification station may be a station identified before the minimum identification time interval as mentioned above.

In an embodiment according to the present invention, it is also possible to identify a train station for every search of a nearby access point without setting the minimum identification time interval. And, in the identification of such a train station, when the current identification station is different from the previously identified train station, the current train station may be corrected and identified. For example, after any train station is identified based on the list of access points found in the search, it may be identified as another train station by the access point found within a few seconds much shorter than the minimum identification time interval. In this case, it may occur when the number of trust points assigned to the currently found access point is higher than the number of trust points assigned to the access point on which the previous train station identification was based. In addition, in this case, because it is not in accordance with the movement between actual train stations within a very short time, the management unit 111 identifies the immediately preceding train station when a connection point with a higher confidence score is found to be for a different train station. It is determined that there is an error in, and the current train station is corrected to be identified. That is, the immediately preceding identification station is not regarded as a station actually moved by the terminal, that is, a validly identified station. If it is regarded as a moved station (or an identified station), it can be used to verify whether or not the train station described below is misidentified, and the use of the modified station within a short time is blocked.

In response to a request for transmission of the search AP status information to the data transmission/reception unit 112 of the management unit 111, the search AP status information configured for the current metro station is transmitted through the use communication network currently designated in the wireless communication terminal 100. It is provided to the reverse-access point information server 200.

On the other hand, if the user has set the arrival station as described above, the management unit 111 checks whether the current train station identified differently from the previously identified station is the set arrival station. If it is confirmed that the set arrival station, the management unit 111 generates an appropriate notification signal (eg, sound, vibration, pop-up window on the screen, etc.) from the wireless communication terminal 100 through the operating system 100a. To make.

As described above, the client operation for providing the status information for the AP searched for the identification of the nearby access points for the subway station identification and the subway station identification is continuously performed until the request for interruption (S49). The stop request may be a request for termination of execution of the measurement agent 110 or a power-off of the wireless communication terminal 100.

6 is a diagram schematically showing an example of a structure of search AP status information 60 configured by a specific terminal and a method of configuring the information by the management unit 111 according to an embodiment of the present invention.

The search AP status information 60 is, as shown, the station identification number 601 assigned to the identified current train station, the time at which the station was identified 602 (this time is the basis for the train station identification. The point of contact list is virtually the same as the obtained time t _s1 ), and the fields of the total list of searched points 603.

In addition, the AP total list 603 of the search AP status information 60 is based on the search time t _s1 of the list 613 ₁ as well as the AP list 613 ₁ that identifies the train station. , For a predetermined time period (T _{S_WIN} ) (for example, 30 seconds, 45 seconds, etc.), a list of other APs acquired through the operating system 100a by periodic search in the Wi-Fi modem 2a All of the connection points included in the fields 613 _i , i=2, ..,N are included. That is, regardless of whether or not the found access points are listed on the reverse-access point linkage map 300, all the found access points are included in the AP total list 603. Of course, overlapping access points in each AP list 613 _i , i=1,2,..,N are only recorded once in the total AP list 603.

In another embodiment according to the present invention, the AP lists reflected in constructing the AP total list 603 are respectively designated before and after based on the search time t _s1 of the AP list on which the train station identification is based. It may be those that were searched in time. For example, the total AP list may be configured from the AP lists searched in the designated time zone as 10 seconds before and 20 seconds thereafter based on the time point t _{s1 of the} subway station identification.

By configuring the search AP status information 60 including all the access points found for a certain time as described above, the station-access point information server 200 displays unique information of existing and newly installed access points throughout the platform of the subway station. ). Of course, by providing all of the access points found in this way, the AP total list 603 is not fixedly installed in a train station, but is installed in, for example, an access point installed in an electric vehicle on board, an access point installed in another electric vehicle intersecting, or underground. Connection points installed in temporary stops outside the station (for example, electric vehicles stopped in a vehicle base) may be found and included in an open train station other than the subway station of. These connection points may later be moved together with the electric vehicle and cause errors in the identification of the train stations in other train stations, but errors in identification by these access points are blocked by the method according to the present invention described later. do.

In an embodiment according to the present invention, the management unit 111 does not immediately transmit to the reverse-access point information server 200 by constructing the search AP status information at that time whenever different train stations are identified. The AP status information of the search AP is configured at the time, and these are collected to reach a predetermined time (for example, 12 AM or 6 AM daily), or a Wi-Fi network with a specific SSID (for example, an office) Alternatively, when the home Wi-Fi network) is designated as a communication network for a specific terminal, it may be transmitted to the reverse-access point information server 200 at a time.

The station-access point information server 200, in the same manner as described above, in the search AP status information provided by all the unique terminals being moved or moved by passengers riding a train in a large city. Based on this, the current reverse-connection point linkage map is updated, which will be described below.

First, the station-access point information server 200 classifies search AP status information provided at a time from many unique terminals or received in real time by the same train station. That is, the received search AP status information is classified by the same station unique number. Then, for the search station status information of the same station unique number, the order of reverse identification time (if the unique terminal provides the search AP status information for each station identification, the reverse identification time order is the same as the search AP status information reception time order) ). FIG. 7 schematically shows that the search AP status information classified by the arbitrary station identification number No _{SS_K} is sorted in reverse identification time order.

As described above, when the stations are sorted in reverse chronological order, the reverse-access point information server 200 selects search AP status information to be used for updating the current reverse-access point linkage map. In this specification, the selected search AP status information is referred to as'representative status information'.

The representative status information, as illustrated in FIG. 7, is a group of AP status information (70 _i , i=1) that shows a difference between a random search AP status information and a reverse identification time within a predetermined time limit (T _{INT_MIN} ). In each of ,2,..), the search AP status information is selected, for example, the reverse identification time is the most advanced, the latest, or the closest. The limit time T _{INT_MIN} is set to an average time that the electric vehicle stops at the platform, for example, a time slightly longer than 30 to 60 seconds.

By selecting the representative status information in this way, the search AP status provided at different time periods from many search AP status information provided for each train station by specific terminals being moved or moved by electric vehicles for each train station. Information can be reflected in the update of the reverse-connection point linkage map 300. The reason for considering the AP search information acquired at different time zones is that the access point at which the signal is accidentally detected at the platform is limited to the time zone, although the search AP status information acquired at the same time period is not fixedly installed in the corresponding train station. Since there may be, it is to prevent such connection points from being reflected in the update of the reverse-connection point linkage map 300 in advance.

In one embodiment according to the present invention, when one representative status information is selected from the group of each AP status information (70 _i , i=1,2,..), the AP total list of the remaining search AP status information not selected Among the access points listed in, if there is a connection point that is not in the AP total list of the selected representative status information, the access point may be added to the AP total list of the representative status information.

When the representative status information is selected as described above, the reverse-access point information server 200, as illustrated in FIG. 8, access point unique information recorded in the AP total list 810 of the representative status information 80. In the reverse-access point linkage map 300, the access point-specific information of the access point items 310 registered in connection with the corresponding station unique number is compared. In this comparison, for the unique information of the matching connection point, the current confidence score is increased, for example, one point is added, and, conversely, the selected representative status information 80 is included even though it is listed in the linkage map. For non-access point-specific information, the confidence score is reduced. For example, one point is subtracted (P80). Lastly, if the access point is included in the representative status information 80 received and selected from the specific terminals, but is not registered for the station's unique number, for the access point's unique information 811, information about the corresponding train station and Together, it is registered as a new item 311 in the reverse-connection point linkage map 300.

At this time, the initial score 311a of the aforementioned is given to the confidence score of the newly registered items 311.

And, based on the representative status information of the next selected order, the update as described above is performed again on the updated reverse-access point connection map by reflecting the selected representative status information in this manner.

According to the update method for the station-connection point connection map 300 as described above, the reliability scores of the access points repeatedly found in the same train station at different times are increased, and the trust scores of the access points that are not found at any point in time are Will decrease. In addition, the access points first discovered by any one of the unique terminals are newly registered as initial scores, but if they are not found by other unique terminals afterwards, their trust scores are reduced below the initial score, and if, If the station is newly fixed, it is also found by other unique terminals at different times, so the confidence score increases from the initial score.

In an embodiment according to the present invention, if the confidence score exceeds a predetermined limit score (eg, 200, 500, etc.), it may not increase any more. If an arbitrary access point has an excessively high confidence score, when a change (for example, relocation to another train station) occurs at that access point, a long time is required for the reverse-connection point linkage map to reflect the change. It may take time, and during this time, there is a possibility that an error occurs in the identification of the train station.

The station-access point information server 200 reflects the search AP status information for each train station provided by many unique terminals and updates the station-access point linkage map as described above, while the trust score is a predetermined lower limit score ( For example, if it becomes smaller than -10, -20, etc.), the corresponding connection point item is deleted from the reverse-connection point linkage map.

According to the above update of the station-access point linkage map based on the received search AP status information of the station-access point information server 200, access points fixedly installed in any train station maintain a high confidence score, and also the corresponding train station The newly installed access points will also increase the reliability score over time, and the access points that have been demolished or broken at the train station will drop to the lowest score or lower and be removed from the station-connection link map, temporarily at the train station. Detected access points are either kept in a low confidence score or are temporarily registered and then deleted from the reverse-connection point linkage map.

Therefore, the station-connection point linkage map 300 continuously updated by the above-described method automatically reflects the connection point installation situation at each train station.

When there is a request to transmit a reverse-connection point linkage map from any specific terminal, the reverse-connection point information server 200 provides the most recent reverse-connection point linkage map to the specific terminal. At this time, preferably, it is provided in the form sorted on the basis of the unique information of the connection point, for example, in ascending order. This is to make it possible to find the unique information of the found access point more quickly in the inverse-access point connection map in which each unique terminal is stored.

According to the method described so far, the reverse-access point linkage map is automatically updated from the status information on access points searched and provided by many unique terminals carried by individuals, and the unique terminals are continuously updated. By identifying the current train stations based on the trust scores of each access point, it is possible to accurately and quickly reflect changes in the installation conditions of each train station, thereby accurately identifying train stations based on the access point.

However, there are cases in which the access points installed in the train station are transferred to another train station, and if this transfer is made more than the number of the existing access points, the specific terminals may misidentify in the train station. This is because the connected point may have a higher trust score than the existing installed access point, or the total number of trusted points of the transferred points may be higher than the total of the existing installed access points. In this case, the unique terminal is misidentified at the subway station where the access point is relocated. 9 schematically shows such a case.

FIG. 9 shows an example in which the connection points sAP _{A_1} , sAP _{A_2} and sAP _{A_3} are transferred from train station A to train station B (91) as an example. The reverse-connection point linkage map 320 provided upon request shows that the connection points 90 are still provided to the specific terminals while being registered 321 with respect to the subway station A.

In this situation, when a specific terminal determines the current train station based on the access points found in the train station B, the trust of the access points (90) from which the trust score (332) for the existing access points of the train station is transferred If you indicate superiority over the score 331 ("indicating superiority" means that the total number of trust points added by train stations is higher, or the junction with the highest trust score belongs to the current train station). The identification is done normally. In addition, according to the update method of the inverse-connection point linkage map as described above, the transferred access points 90 are listed as new access points with respect to the train station B, and the trust score is the initial score, and the trust score is continuously maintained thereafter. Will be increased, and the access point items registered as the train station A are reduced in the trust score due to not being found in the corresponding station, and are eventually deleted from the station-to-access point link map 320.

However, if the superiority of the trust score is reversed, that is, the transferred access points 90 show more superiority than the existing access points in the trust score, the unique terminal misidentifies the train station in the subway station. In other words, despite being a train station B, the current train station is misidentified as a train station A.

In an embodiment according to the present invention, in order to fundamentally block misidentification that may occur in the case of the relocation of the connection points between train stations as described above, by configuring station chain information, which is information showing a relationship between all stations on the train operation path, Provided to the unique terminals, the unique terminals determine whether or not misidentification is based on the reverse chain information.

10A and 10B show examples in which reverse chain information is configured for train lines according to embodiments of the present invention, and FIG. 10A shows the direction of train travel for each line 1000 of the train. It is an example of the reverse chain information 1010 configured without taking into account, and FIG. 10B is an example of the reverse chain information 1020 configured by considering the traveling direction of the train for each line 1000 illustrated in FIG. 10A.

The reverse chain information configured as illustrated in FIG. 10A or 10B is stored in the reverse-connection point information server 200, provided to specific terminals with a reverse-connection point connection map, or of the measurement agent 110 The management unit 111 may be preset.

In the present embodiment, the management unit 111 records the identification history whenever a train station is identified as described above, and verifies whether the train station is misidentified by referring to the identification history when the train station is identified. do.

When the reverse chain information 1010 configured as illustrated in FIG. 10A is received from the station-connection point information server 200 or is previously set and provided in the management unit 111, when the current train station is identified, The unique number of the identified train station is searched for in the station chain information 1010, and the adjacent station recorded in connection with the found station number (transit stations that are moved on foot due to different train lines are also considered as adjacent train stations.) The unique numbers are compared with the inverse unique numbers identified immediately before in the identification history information. As a result of this comparison, if it matches any one of the unique numbers of the adjacent stations, it is determined that the current train station has been correctly identified, otherwise, it is determined that it is misidentified for the reasons described above.

The station chain information 1010 shown in FIG. 10A is configured by using only adjacent train stations as adjacent stations for each train station, but in another embodiment according to the present invention, adjacent train stations with one station interposed therebetween. It is also possible to configure station chain information in a way to link to adjacent stations to be applied to verification of current train station identification. For example, in the illustrated train line 1000 of FIG. 10A, when the station identification number is a train station with NO _{SS_2} , the station identification numbers are NO _{SS_1} , NO _{SS_3} , NO _{SS_51} , NO _{SS_4} , NO _{SS_62} and NO _{SS_103} You can link them to adjacent stations. In this embodiment, it is possible to prevent a case in which it is determined by mistake that it is not possible to identify one train station due to a temporary problem of a specific terminal, etc., and then skip and skip and identify the train station normally.

When the station chain information 1020 configured as illustrated in FIG. 10B is used, the unique number of the entire station and all stations associated with the station identification number identified for the current train station and the previous one recorded in the identification history information Compared with the train stations identified immediately before the previous one, if they are all the same, it is normal identification.

In another embodiment according to the present invention, it is also possible to verify whether the train station is misidentified based on the time required between stations instead of the station chain information. 11 shows an example of a timetable between stations 1100 constructed according to an embodiment of the present invention. The value (T _{i_j} , i=1,2,.3,., j=1,2,3,..) recorded in a cell where a pair of train stations determined in rows and columns intersect each other It shows the estimated time required to move between stations. For the estimated time required between train stations belonging to different routes, a time obtained by adding the average time required for each transfer to the time of boarding and moving the train may be designated on the premise that the transfer is performed at the least number of times.

The timetable 1100 between stations configured as illustrated in FIG. 11 is provided when the station-access point information server 200 provides a station-connection point link map to a specific terminal, or the measurement agent 110 The management unit 111 may be preset.

In the embodiment in which the timetable between stations 1100 is applied for verification of misidentification of a train station, the management unit 111 identifies each train station along with the identified station whenever it passes the verification of misidentification described later. Record the time in the reverse identification history information. In addition, when the current train station is determined, the row and column are specified in the timetable 1100 between the stations as the unique station number of the train station and the train station identified immediately before. The time value T _{M_N} is read (P110).

In addition, the time difference (dT _INT ) between the time at which the train station was immediately identified and the time at which the current train station was identified is recorded in the station identification history information (this time difference is the time required for actual movement from the immediately preceding identification station to the current identification station) ), and compares the time difference with the estimated time value (T _{M_N} ) read from the timetable (1100) between the stations, and the time difference (dT _INT ) is constant with the expected time value (T _{M_N} ) read. If the difference is smaller than the allowable value (for example, a value corresponding to 10% of the corresponding time value), the management unit 111 determines that the identification of the current train station is an error.

If it is determined by mistype of the train station in the verification based on the reverse chain information 1010, 1020 or the timetable 1100 between stations as described above, the management unit 111 configures the misidentification report information to transmit and receive the data 112 ) To the reverse-access point information server 200.

In one embodiment according to the present invention, the misidentification reporting information may be configured as the unique number of the misidentified subway station, the misidentification time, and the unique information of the access points on which the identification is based, as illustrated in FIG. 12. have.

When the misidentification reporting information 1200 is received from a specific terminal, the inverse-access point information server 200, in the current inverse-access point linkage map 330, identifies the misidentified station identification number recorded in the reporting information. After finding the access point items registered in linkage, items matching the access point unique information written in the misidentification reporting information are deleted (P120).

In another embodiment according to the present invention, for the access points notified as misidentification reporting information as described above, the number of accidents is increased by 1 each time there is a notification, and the number of accidents is a predetermined limit, for example 2 or When it exceeds 5, the corresponding connection point items can be deleted from the reverse-connection point connection map.

As described above, once the inverse-connection point linkage map 330 from which the access points on which the misidentification was based is deleted is provided to the specific terminals, the access points are not used for identification in the train station where the misidentification has occurred. Identification can be normally made by the access point. And, after providing such normal identification, when providing the search AP status information, it is recorded as the newly discovered access points in the status information and provided to the station-access point information server 200 while being connected to the station corresponding to the station-access point connection map. It will be registered and will increase the confidence score afterwards, and will be used as a basis for reverse identification at the train station.

On the other hand, when the reverse chain information is provided in the specific terminal as in the above-described embodiment, the management unit 111, as well as when the user-specified arrival station is the current identification station, the arrival station, the embodiment of Figure 10a Is a corresponding notification signal from the wireless communication terminal 100 through the operating system 100a when it corresponds to one of the unique numbers of adjacent stations, or in the embodiment of FIG. To be generated in advance.

In the train station identification, which has been described so far through communication between the measurement agent 110 and the station-access point information server 200, any one of the access points installed at the station corresponds to the station-access point connection map. If correctly registered, the misidentification may occur as described above in a situation where it is installed together with the access points registered in other train stations due to relocation, but these misidentifications are resolved over time and the reverse-connection junction link map Will correctly reflect the installation status of the junction in the station.

However, it may happen that none of the access points installed at an arbitrary train station is registered for the train station on the station-access point linkage map at any time. For example, the access points of any subway station may be all new, or may be replaced at a time by access points removed from other subway stations. In this case, although the access points are found in the corresponding train station, the train station identification based on the access point cannot be made.

In an embodiment according to the present invention, in order to solve such an unidentifiable situation of a train station, if identification of any one train station is made, it is recorded in station identification history information, and in a periodic search until the next train station identification is made. The list of found access points and the time point of the search are recorded in the search history information. In addition, in the present embodiment, as illustrated in FIG. 13, a timetable 1300 between stations, in which the time required between stations is recorded in each cell together with an interval reciprocal number (驛數), is provided in advance in the measurement agent 110. . Of course, this may be provided as received from the reverse-access point information server 200 as described above.

In the present embodiment, when the identification of the current train station is made, the management unit 111 is one cell in the timetable 1300 between stations as the station identification number of the train station just identified in the station and station identification history information. And specify the reciprocal of the interval recorded in the specified cell. If the interval reciprocal is 1, there is no omission of the station in the reverse identification process currently in progress, but if the interval reciprocal is 2 or more, there is an identification omission in the train station that has passed prior to the identification of the current train station.

Therefore, if the interval reciprocal number is 2 or more, the management unit 111 creates a list of access points estimated to be installed in the subway station (hereinafter, abbreviated as'missing station'), which is missing identification. It will be described specifically with an example.

If the currently identified train station is the station identification number No _{SS_1} , and the previous identified train station is No _{SS_3} , the management unit 111 confirms that the interval reciprocal is 2 in the timetable 1300 between the stations illustrated in FIG. 13. (1301). Then, the management unit 111 recognizes that one missing station has occurred along the way, and estimates the missing station from the timetable 1300 between stations as follows.

First, train stations No. _{SS_3} identified immediately before and train stations with an interval reciprocal number of 1 (in the example of FIG. 13, No _{SS_2} , No _{SS_4} , No _{SS_103} ,..) are selected, and among them, the currently identified train station No _{SS_1} transient interval reciprocal Find a single train station. If you do so, a single train station No _{SS_2} is decided.

If, as described above, the number of train stations having an interval reciprocal of 1 is determined to be two or more, the management unit 111, for the plurality of candidate missing stations, between the current identification station and the immediately preceding identification station when passing through the corresponding missing station. The time required for the section is calculated from the timetable 1300 between the stations, and the calculated time required for the section is compared with the time interval between the identification time for the train station identified immediately before and the current train station identification time, and the time required for the nearest section. The candidate candidates are identified and determined as missing.

Next, a list is made of the access points estimated to be installed in the train station thus determined. FIG. 14 schematically shows a method of creating a list of missing station access points from search history information created by periodic access point searches during the movement from subway station No _{SS_3} to No _{SS_1} .

The management unit 111, after estimating and determining the train station as described above, estimates the estimated travel time between the determined train station No _{SS_2} and the currently identified train station (T _{1_2} ), and the estimated travel time between the train station just identified (T _{3_2} ). , Check each of the timetables between stations 1300, and obtain the ratio of the time required between the current identification station and the estimated station {α=T _{1_2} /(T _{1_2} +T _{3_2} )} for their total.

Then, the time difference corresponding to the ratio α of the time (=st _n -st _m ) elapsed from the station identification time difference, that is, the time elapsed from the previous station identification time (st _m ) to the current train station identification time (st _n ){ After obtaining ΔT _pst = αⅹ(st _n -st _m ) }, the time point (t _atst ) _obtained by subtracting the time interval (ΔT _pst ) from the current train station identification time (st _n ) is determined. Then, when a specific time point (t _atst ) is determined in this way, based on the time point (t _atst ), in a time zone (t _atst -Tw/2 ~ t _atst +Tw/2) belonging to a predetermined time width Tw before and after. The AP list obtained by searching is searched for in the search history information 1400.

Finally, if any of the search AP lists 1410 found in this way are recorded, the access point list is created by collecting these access points, and the determined point-in-time (t _atst ) and the estimated missing point are collected in the access point list. It is configured as a list of missing station access points by adding an identification number and reports to the station-access point information server 200.

The above-described missed station estimation is based on the assumption that one train station is missing and both train stations are identified. However, it can be estimated in the same way even if there are multiple missing stations between the two identification stations. For example, if the interval reciprocal between the current identification station and the immediately preceding identification station is confirmed to be 3, the first missing station having the current identification station and the interval reciprocal number equal to 1 and 2 from the previous identification station is searched in the timetable 1300 between the stations, and the interval reciprocal Find the current identification station and 2, and the previous identification station and 1 person's second missing station. When these two missing stations are found, based on the identification time of the current train station, the time of identification of the previous station, and the estimated time required for the missing station, the estimated time at the missing station was estimated. Then, based on the estimated time point, it is possible to prepare a list of access points for the missing station.

When a missing access point list is reported from a specific terminal as described above, the reverse-access point information server 200 estimates the unique information of the access point included in the list in the reverse-access point linkage map 300 It will be registered as a train station and will be newly registered.

In a preferred embodiment according to the present invention, when a list of missing station access points is reported from a specific terminal, it does not immediately appear on the reverse-access point connection map, and is temporarily stored and then stored for a certain period of time (for example, 60 seconds) or more. When one or more missed station access point lists are received again and again with the same missed station at a distance, only the access points commonly listed in their access point list are used to link the inverse station to the estimated missing access points. It is newly registered on the map 300.

By providing information on the searched access point of the measurement agent 110 described in detail above and updating the station-access point linkage map 300 of the station-access point information server 200, specific terminals are provided to the station. -The current train station can be accurately identified by referring to the connection point linkage map 300 and the connection point information obtained by searching. Hereinafter, a method of enabling the measurement point to be identified by measuring the characteristics of the wireless service in conjunction with the above-described subway station identification as described above will be described in detail.

First, a method of measuring the service speed of a Wi-Fi network, which is one of the characteristics of wireless services, will be described.

As described above, the management unit 111 of the measurement agent 110 provided in the specific terminal, if the current train station is identified based on the list of currently acquired access points, a predetermined time from that point, for example, 10 seconds. Alternatively, among the access points searched at the time when 15 seconds have elapsed, the access point belonging to the current train station on the inverse-access point connection map 300 is designated and the access point having the highest signal strength is connected to the operating system 100a to connect to the Wi-Fi network. request.

Accordingly, the operating system 100a controls the Wi-Fi modem 1a to exchange a connection signal with a designated access point, and attempts to connect to the Wi-Fi network. After switching to, the management unit 111 is notified.

If there is a notification that the switch to the Wi-Fi network has been made, the management unit 111 requests a request according to a communication protocol requesting the transmission of a predetermined file through the data transmission/reception unit 112, a specific external server specified in advance. (This server may be the measurement information server 210.) Therefore, the request according to this communication protocol is transmitted to the specific server through the currently connected Wi-Fi network, and the specific server starts transmitting the designated file in response to the request.

When the response to the request according to the transmitted communication protocol starts to be received, the management unit 111 records the reception start time. Then, when all the data of the requested file is completely received, the reception end time at which the last data was received is checked.

As described above, when the start and end times of file reception through the currently connected Wi-Fi network are confirmed, the management unit 111 creates speed-related measurement information and reports it to the measurement information server 210. 15 shows an example of the configuration of the speed-related measurement information 1500, the identification number of the current train station identified, the start time of receiving the file, the end time of receiving the file, the size of the received data, and connection when receiving the file It consists of unique information of the connection point.

According to the measurement operation of the reception speed for the Wi-Fi network as described above of the measurement agent 110, the unique terminals carried by the user (or the user entering the platform) riding in the same electric vehicle, the same place, That is, in the platform of the same train station, as illustrated in FIG. 16, files are individually received, and when reception is completed, speed-related measurement information is configured as described above, respectively, and the speed measured by the measurement information server 210 Report information.

As described above, when the unique terminal is connected to a specific Wi-Fi network (for example, a designated SSID access point), the report may proceed at once for the speed-related measurement information configured in the meantime.

The measurement information server 210, when a lot of speed-related measurement information is received by the reporting operation as described above by each unique terminal, the same ones based on the station unique number included in each speed-related measurement information Classify.

And, for speed-related measurement information classified by the same station identification number, the time difference between each other is within a certain time width, for example, within 10 seconds or 20 seconds (for this, it is referred to as belonging to the same'time zone'). .) Receiving start times (1610 ₁ ,1610 ₂ ) are grouped together, and the relevant metro station is specified by using the speed-related measurement information having the reception start time belonging to the grouped same time zone as the target measurement information. The service speed of the backhaul at the time is determined as follows.

The measurement information server 210, for each target measurement information grouped as above, as illustrated in FIG. 16, first identifies the entire time period 1620 where the file was received, and starts the start time (t _ds11 ). And check the end time (t _de12 ). Here, the entire time period 1620 refers to an interval from the reception of one specific terminal to the time when all reception at the corresponding terminals is completed. Then, the sum of the size of the received data recorded in each speed-related measurement information of the target measurement information is divided by the time (= t _de12 -t _ds11 ) of the entire identified section to obtain a speed, and this speed is calculated from the target measurement information. It is estimated by the service speed of the backhaul at the corresponding time in the specified train station.

If the access points installed in the same platform are connected to different backhauls, the measurement information server 210 checks the unique access point information included in the speed-related measurement information and backhaul connection information for each access point that is already provided. Compared with, after classifying the speed-related measurement information for each connection point connected to the same backhaul, the service speed for the backhaul is obtained as described above.

In one embodiment according to the present invention, it is also possible to grasp the individual service speed of each access point based on the speed-related measurement information received from each specific terminal as described above. If a plurality of speed-related measurement information is received for the same time zone as unique information of the same connection point, service speeds for these are obtained as described above.

In one embodiment according to the present invention, the service speed of the backhaul for the access points of each train station identified as described above, or the service speed of each access point is averaged for each time zone, stored, and then requested by the operator By providing through the output device, it is possible to grasp the trend of the service speed of the backhaul for each train station or the service speed of each access point.

Next, a description will be given of a method of grasping the intensity of electromagnetic waves caused by a radio signal, which is another characteristic of the radio service.

The management unit 111 of the measurement agent 110 provided in the specific terminal, when the train station identification based on the access point information obtained by the search is made by the above-described operation, as illustrated in FIG. During the specified measurement time T _fore (for example, 30 seconds or 40 seconds) from (t _cn1 ), signal strength for the cellular network is periodically detected (1710). Since the detection of the signal strength is performed by the cellular modem 1a, the operating system 100a is requested for the detection.

The operating system 100a, whenever a periodic request from the management unit 111, the reference signal power value (RSRP: Reference) that the cellular modem 1a measures and provides signal strength in a designated frequency band Signal Received Power) is read and transmitted to the management unit 111.

The management unit 111 obtains an average value of the reference signal power values transmitted from the operating system 100a during the measurement time T _fore and then writes electromagnetic wave-related measurement information. 18 is a diagram illustrating the configuration of the electromagnetic wave-related measurement information 1810 according to an embodiment of the present invention, distinguishing the identification number of the train station and the type of measurement point (eg, whether it is a platform or a tunnel) Information), the measurement date and time, and the reference signal power value detected as described above.

In an embodiment according to the present invention, the model name of the unique terminal may be further included in the electromagnetic wave-related measurement information. In this embodiment, the management unit 111 may request the operating system 100a to obtain terminal information, so that the electromagnetic wave-related measurement information 1810 can include the model name of the terminal.

Then, based on the time point (t _cn1 ) at which the current train station was identified, the measurement point type is written as _the'stand ' in the measurement information related to electromagnetic waves, as described above.

When the electromagnetic wave-related measurement information is prepared in this way, it requests the data transmission/reception unit 112 and transmits it to the measurement information server 210 through the current communication network. Of course, as described above, the measurement information related to electromagnetic waves may be stored every time, and when connected to a specific Wi-Fi network, the measurement information server 210 may be provided all at once.

When the train station is identified, the electromagnetic wave-related measurement information is prepared and reported to the measurement information server 210, and then the management unit 111 is searched and provided periodically by the operating system 100a. In the AP list, the access point designated as fixedly installed in the currently identified train station (for example, a connection point that is connected to the train station and is given a trust score of more than a certain standard currently registered on the station-access point linkage map 300) Check if there is.

If such a connection point is not visible, the reference signal power value for the cellular network is periodically detected for a predetermined measurement time (T _post ) starting from then (t _di1 ) (1720), and as an average value of these, The electromagnetic wave-related measurement information 1810 having the configuration as illustrated in 18 is prepared. At this time, information indicating that it is'tunnel' is entered in the measurement point type, and in the station identification number, the identification number of the currently identified train station is entered.

In another embodiment according to the present invention, after continuously checking the reference signal power values and recording them together with the times when they are identified, the train stations are identified for a predetermined time interval (T _back ) based on the identified time point (t _cn2 ). It is also possible to create electromagnetic wave-related measurement information by averaging the identified reference signal power values and using'tunnel' as a measurement point type.

In another embodiment according to the present invention, as in the operation for measuring the service speed for the above-described Wi-Fi network, when the current metro station is identified, the operating system is designated by designating the access point that is the basis of the identification. After requesting a connection to the Wi-Fi network at 100a), the communication network of the specific terminal is switched to the Wi-Fi network, and the reference signal power values are detected based on the point at which the connection is released. It is also possible to create measurement information related to electromagnetic waves, which are tunnels.

In addition, when preparing measurement information related to electromagnetic waves having a measurement well type of'tunnel', as shown in FIG. 18, a unique number 1811 of the train station identified immediately before is included in addition to the currently identified train station. This is to enable the user to check in which direction the tunnel section in which electromagnetic wave related information is measured is in the currently identified train station. That is, by the immediately preceding identification station field, the measurement information server 210 is for the section in the opposite direction of the previously identified train station in both tunnel sections of the currently identified train station, for the corresponding electromagnetic wave-related measurement information. Will be identified.

In the above-described embodiment, the detected reference signal power values may not be averaged, and the detected values may be directly listed together with the detection time to generate electromagnetic wave-related measurement information and provide it to the measurement information server 210.

On the other hand, as described above, the measurement information server 210 that receives the electromagnetic wave-related measurement information reported from each of the specific terminals, estimates the electromagnetic wave strength based on the respective electromagnetic wave-related measurement information. Estimating the intensity of the electromagnetic wave that the wireless signal of the cellular network is causing around the specific terminal from the reference signal reference value included in the measurement information related to the electromagnetic wave is one of the relational expressions between the known electromagnetic wave strength and the power of the received signal. Select and use.

Even if the electromagnetic strength is estimated from the power of the received signal using a known method, the estimated value is difficult to match the actual electromagnetic strength due to many various parameters (eg, antenna gain and impedance, loss rate, etc.) .

However, if the electromagnetic wave strength is estimated from many received signal powers simultaneously obtained by a plurality of unique terminals in the same space, the estimated electromagnetic wave strength has a close correlation with the actual electromagnetic wave strength.

Accordingly, the measurement information server 210, in the electromagnetic wave-related measurement information provided by many unique terminals, uses the same metro station as an identification station, and has the same measurement point and the same time zone (for example, within 10 seconds of each other). By estimating the intensity of the electromagnetic wave from the reference signal power values recorded in the electromagnetic wave-related measurement information, which are measurement dates showing a time difference, based on the correlation of the estimated electromagnetic wave intensity with the actual electromagnetic wave intensity, the corresponding place (of a specific subway station) It is possible to grasp the actual electromagnetic intensity at the corresponding time in the tunnel section in a specific direction from the platform or the station. Of course, the correlation between the estimated value and the actual value is checked in advance through many measurements, and is used to grasp the actual electromagnetic wave intensity.

According to an embodiment of the present invention, in the case where the terminal model name is included in the electromagnetic wave-related measurement information reported from the specific terminals, the measurement information server 210, with respect to the reference signal power value included in the information When applying the relational equation for estimating the electromagnetic wave strength, a previously determined parameter value (eg, antenna gain, impedance, loss rate, etc.) is applied to the corresponding terminal model. Of course, in order to differentiate the application for each model, the measurement information server 210 is provided with a table in which parameter values identified from each specification of many types of wireless communication terminals are written for each model.

According to the above-described method, based on the information continuously and collectively measured in the train's driving route by the communication terminals carried by many people, the quality of the wireless service speed provided in each current train station and the train's driving route It is possible to quickly grasp the electromagnetic wave intensity of the center.

In one embodiment according to the present invention, the measurement information server 210 adjusts the measurement operation for specific personal communication terminals based on the measurement information provided by the unspecified personal communication terminals and provided through the wireless communication network. It might be. For example, the received signal power value measured and reported in a specific section on the train route (here,'section' refers to either a section of a tunnel or a section of a platform) is less than or equal to a predetermined lower limit, or If the electromagnetic wave strength obtained by estimating the received signal power value corresponds to an outlier value that is greater than or equal to a predetermined upper limit value, the identification information indicating'attention' is marked for that particular section, and then the process proceeds to that particular section. In order to strengthen the measurement of the corresponding wireless service characteristics, the personal communication terminals are instructed. 19 is a diagram schematically showing a process according to the present embodiment. Referring to FIG. 19, this embodiment will be described in more detail.

First, in the present embodiment, when a wireless communication terminal measures wireless service characteristics at arbitrary points on a train operating path according to the method described above and provides it to the measurement information server 210, its own unique identification number (Hereinafter, it will be referred to as'terminal unique number'.) For example, it is assumed that the subscriber's phone number assigned to the corresponding terminal is transmitted together.

Any wireless communication terminal 100 ₁ measures wireless service characteristics, for example, a received signal power value at arbitrary points on a train route according to the above-described method, and further includes its own unique identifier. If the reference signal power value in the measurement information configured and provided as illustrated in FIG. 18 is equal to or less than a predetermined lower limit value as described above, or if an electromagnetic wave strength estimated by estimating from the value is an abnormal value indicating a predetermined upper limit value or more (S191) ), the measurement information server 210 first grasps the measurement point from the measurement information provided by the corresponding terminal 100 ₁ . That is, identification information indicating'attention' about the measurement point in the database of which the measured train station is identified and whether it is a platform of the train station or a section of both tunnel sections connected to the train station and records the measurement information. Mark it. The measurement point where'attention' is marked is called the'attention point'.

In addition, in a section immediately adjacent to the point of interest, or in a section between sections having a predetermined number (for example, 1, 2, etc.) or less, a wireless communication measuring and reporting wireless service characteristics on the train's driving route Search for whether there are terminals (S192). Of course, the measurement information server 210 has reverse chain information as described above, and thus, it is possible to specify an adjacent section for a point of interest based on the reverse chain information. For example, as shown in Figure 19, the one or more measurement points report value the wireless communication terminal (100 _1), the station identification number SS_ if _L is "platform", while in progress, in the direction toward to the station a directly adjacent and that A terminal that measures wireless communication characteristics (100 ₂ ,100 ₄ ) in a tunnel section or a platform adjacent to a station adjacent to a station (that is, reports the measured value in that section) and reports the result by measuring wireless service characteristics Search in fields (100 _i , i=1,2,3,..).

The direction of progress of the terminals reporting the measured value is a terminal tracking in which information about the measurement point is sequentially recorded for each unique terminal identification number whenever the measurement information configured as shown in FIG. 18 is reported together with the terminal identification number. It is understood from information. The terminal identification numbers of wireless communication terminals identified as being in adjacent sections are found in the terminal tracking information, and then two reported and recorded as different metro station identification numbers or different measurement point types for the terminal identification numbers. If there are any of the above items, the progress direction of the corresponding terminal can be grasped from the order in which the items are recorded.

As described above, when a wireless communication terminal 100 ₂ , 100 ₄ that is in a section adjacent to a section of interest and proceeds to the section of interest is found, the measurement information server 210 provides the terminal with measurement information. In response to this, or through a separate message transmission using the IP address currently assigned to the corresponding terminal, which is identified from the message providing the measurement information, order to strengthen the measurement (S193).

The measurement enhancement at this time may be to increase the measurement frequency. For example, as illustrated in FIG. 17, it is assumed that measurement of a received signal power value is performed once every 2 seconds or every 3 seconds when measurement of an arbitrary measurement point is started (1710, 1720). , The wireless communication terminal that has received the measurement enhancement command may perform the measurement by making the measurement interval shorter, for example, 500 msec or 800 msec (1900). In addition, it is also possible to make the measurement duration (T _fore , T _post ) longer.

When the measurement enhancement command is transmitted as described above, the measurement information server 210 also transmits information on the point at which measurement enhancement should end. Information on the end point may be designated as a train station where the wireless communication terminal arrives past a section of the week. Of course, it may be designated as a tunnel section adjacent to the train station. For example, in the Figure 19 example, the measurement reinforced command to be transmitted to the radio communication terminal 100 _4, may be the station identification number SS_ _L-1 designated as the end point, the station identification number SS_ _L and SS_ _L-1 It can also be designated as a tunnel section between train stations.

As described above, the wireless communication terminals 100 ₂ and 100 ₄ that have received the measurement enhancement command with the end point designated identify the measurement location based on the access point found by the search, and the identified location is the measurement enhancement. If it falls to the end point of, it returns to the original general measurement method.

On the other hand, the measurement information server 210, if there is no wireless communication terminal to measure and report the wireless service characteristics on the train route in the section adjacent to the point of interest, wait until the wireless communication terminal enters the adjacent section Thereafter, when a new terminal enters, a measurement enhancement command is transmitted to the corresponding terminal as described above.

For a caution section, when a measurement result is obtained from a plurality of wireless communication terminals due to a measurement enhancement command, the measurement information server 210 deletes identification information of'attention' marked for the section in the database , Measured values that are regarded as outliers and measured values obtained by strengthening the measurement, through the separately provided user interface, for example, a monitor, etc., and identification information for the relevant section ('station' or subsequent tunnel section of the train station) By outputting together, the operator can immediately identify the problem location and the current state of the wireless service characteristics at that location.

Various methods described in detail in the above-described embodiments and applied to a method for measuring wireless service characteristics along a train route using a plurality of personal communication terminals are appropriately selected and combined unless they are mutually incompatible. Can be.

So far, the principles and concepts of the present invention have been described in detail by exemplifying a Wi-Fi network, which is a high-speed wireless LAN, installed as a wireless communication network installed in a platform of a train and providing wireless communication services to users. However, the principle and concept of the present invention is that the service area is local compared to the cellular network by individually forming a service zone locally in a place limited by uniquely identified access points, such as a Wi-Fi network. In addition, the service zones may be distributed, and of course, the communication continuity (ie, handover) between them may not be guaranteed, or the communication continuity may be partially applied to a wireless communication network in which communication is guaranteed. Therefore, the name of the wireless communication network to be applied, the radio signal method, etc. are different, and the invention in which the principles and concepts are used or applied as an example in the present specification should be regarded as naturally belonging to the scope of the claims.

As described above, the preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art can improve other various embodiments within the technical scope and technical scope of the present invention disclosed in the appended claims, Changes, substitutions or additions will be possible.

1a: cellular modem 1b: cellular codec
2a: Wi-Fi modem 2b: Wi-Fi codec
4: display driver 5: display panel
6: Input control unit 6a: Touch sensor
6b: Keypad 7: Memory
10: main control unit 100,100 _i : wireless communication terminal
110: intelligent wireless service measurement agent
111: management unit 112: data transmission and reception unit
113: UI processing unit 200: reverse-connection point information server
201: cellular network 202 _i : Wi-Fi network
203: backhaul 210: measurement information server
300: Reverse-connection point connection map

Claims (26)

In the method for identifying the characteristics of the wireless service using a plurality of wireless communication terminals while identifying the location on the train route,
A first step of providing a plurality of wireless communication terminals with access point mapping information registered in connection with the corresponding train station by individually assigning a trust score to the access points installed at each train station;
A second step of receiving, from the plurality of wireless communication terminals, access point status information including a list of access points found in a nearby search and a connection station identified based on the access point mapping information and a connection point list of the identified subway station;
It comprises 3 steps of updating the access point mapping information based on the received access point status information,
In the above step 3, among the access points registered in the access point mapping information in connection with the metro station designated in the received access point status information, the trust granted to the access point in the access point list included in the current access point status information A method of updating the access point mapping information in such a way that the score is relatively higher than the trust score of the access point not in the access point list. According to claim 1,
In the third step, among the access points registered in the access point mapping information in connection with the metro station designated in the access point status information, the trust score is reduced for access points not included in the access point list included in the access point status information. How to update the access point mapping information in a way. According to claim 2,
In the third step, when the reduced confidence score is lower than a predetermined lower limit score, the access point mapping information is updated by deleting a registration for the designated train station in the access point mapping information for the access point. According to claim 1,
In the third step, if there is an access point included in the current status of the arbitrary access point but not registered in the access point mapping information for the designated train station, the designated initial train station is assigned to the designated train station by assigning the designated initial score as a trust score. A method of updating the access point mapping information in a manner newly registered in the access point mapping information in association. According to claim 1,
In step 3, among the access points registered in the access point mapping information in connection with the designated subway station in the current access point status information, the trust granted to the access point in the access point list included in the current access point status information If the score is higher than the specified limit score, the confidence score is not changed. According to claim 1,
In the third step, the access point mapping information of only one of a group of access point status information in which the time points for identifying the designated train stations are within a predetermined time interval between each other is identified from the received access point status information using the designated train station as the same identification station. The method is to designate the status information of the random access point reflected in the update, and ignore the status information of the remaining access points of the group that are not designated. According to claim 1,
When misidentification reporting information designating the same random metro station is received from one or more of the plurality of wireless communication terminals, for one or more access points included in the misidentification reporting information, to the random metro station in the access point mapping information The method further comprising the step of deleting the listing. According to claim 1,
From the plurality of wireless communication terminals, receiving measurement information on wireless service characteristics including information on a random train station identified based on the access point mapping information and the access points found in the surrounding search, and the received measurement The method further comprising the step of identifying the wireless service characteristics along the train operating path from the information while specifying the measurement location. The method of claim 8,
The measurement information related to the wireless service characteristics includes speed-related information measured while receiving data of a file through a specific wireless communication network at the identified any subway station,
The grasping step is based on the measurement information obtained by starting measurement together within a certain time span, and specifying the measurement location as a platform of the identified random train station, and a backhaul connected to connection points forming the specific wireless communication network. (backhaul) how to determine the service speed. The method of claim 8,
The measurement information related to the wireless service characteristics includes strength information on a radio signal of a mobile communication network obtained by measuring in the identified platform or a tunnel section connected to the subway station.
The grasping step is based on the measurement information, while specifying the measurement location to either the platform of the identified train station or both tunnel sections leading from the train station, the electromagnetic wave generated by the radio signal of the mobile communication network How to figure out the century. The method of claim 10,
The step of identifying, based on the identification order of at least two identified train stations included in the measurement information, is a method of specifying the measurement location as one of the two tunnel sections for the identified train station . In the method for grasping the characteristics of the wireless service in the train route using a plurality of wireless communication terminals,
A first step of receiving measurement information on a wireless service characteristic for an arbitrary section on a train route from an arbitrary wireless communication terminal, along with information on the random section, through a communication network;
If the received measurement information indicates an outlier exceeding a predetermined criterion, it comprises two steps to enhance the measurement of wireless service characteristics for the arbitrary section.
The second step,
Selecting a wireless communication terminal that is located in a section closer than a predetermined range and a predetermined range from among a plurality of wireless communication terminals measuring and providing wireless service characteristics on a train route;
And transmitting, to the selected wireless communication terminal, a measurement enhancement command for increasing the frequency of measurement regarding wireless service characteristics. The method of claim 12,
The method for strengthening the measurement includes information on a section in which a measurement with increased frequency should be ended. The method of claim 12 or 13,
The section may be a section of a platform or a section of a tunnel,
The pre-specified range is a method that is specified as an interval between the arbitrary section and a specific number of sections. In a terminal that can communicate by connecting to a plurality of wireless communication networks,
A transmitting and receiving unit configured to exchange data with an external server using any one communication network in the plurality of wireless communication networks;
Through the transmitting and receiving unit, a data request is transmitted to a specific external server, and in response to the request, a trust score is individually assigned to the access points installed in each train station to receive the access point mapping information registered in connection with the train station. The terminal is currently located on the basis of the train station to which the access points registered in the access point mapping information are connected, and the number of trust points assigned to the registered access points among the access points found in the surrounding search. A terminal comprising a management unit that identifies a subway station and configures status information including access points found in the vicinity based on the identification time point to provide to the specific server through the transmission/reception unit when the subway station is identified. The method of claim 15,
The management unit, if there are a plurality of subway stations connected to the access point mapping information registered in the access point mapping information among the access points found in the search around, the station in which the access point showing the superiority in the trust score is linked, the current location A terminal configured to be identified as a train station. The method of claim 15,
When configuring the status information, the management unit is configured to record all the access points found in a periodic search within a predetermined period of time. The method of claim 15,
The management unit is configured to determine whether there is an error in the identification of the currently located train station based on the information on the train stations that are located immediately before and the train stations that are already connected to each other when the currently located train station is identified. Terminal. The method of claim 15,
When the currently located train station is identified, the time required to actually move from the previously identified train station is identified with the currently identified train station identified on the estimated timetable between each train station on the train line. The terminal is configured to determine that the identification of the currently located train station is an error if it is shorter than a predetermined allowable difference between the estimated time required between the train stations identified immediately before. The method of claim 18 or 19,
The management unit, if it is determined that the identification of the currently located metro station is an error, is configured to report to the specific server along with the misidentified metro station the access point listed in the access point mapping information that is the basis of the misidentification. terminal. The method of claim 15,
The management unit, when the currently located train station is identified, if the identification station is a station number previously identified and two or more intervals reciprocal (驛數), based on the interval reciprocal information between each train station on the already equipped train line, the current And a terminal configured to determine a train station having no identification between the identified train station and the immediately preceding train station. The method of claim 21,
The management unit, the time required to actually move from the previously identified train station to the currently identified train station, and the estimated required timetable between each train station on a train line already equipped, the determined missing train station and the current identification Based on the estimated time required between the train station or the immediately preceding identification station and the estimated time required between the immediately preceding identification station and the currently identified train station, a specific time point at which the terminal was located at the determined missing station is determined, and a schedule is determined based on the determined time point. A terminal configured to report the access point found by searching in time to the specific server together with the determined missing station. The method of claim 15,
The management unit acquires measurement information on a wireless service characteristic based on the identification time point whenever the currently located metro station is identified, and obtains the obtained measurement information along with the information of the corresponding identification station through a server at a remote location. The terminal is further configured to provide to. The method of claim 23,
The measurement information, based on the identification time point, is one of the wireless communication networks, receiving data measured by receiving data from a remote location through a specific wireless network that provides a wireless service locally within a limited place. A terminal that is information about speed or measured signal strength for a wireless signal by a communication network supporting cellular communication, which is one of the wireless communication networks, based on the identification time point. The method of claim 15,
When an arbitrary arrival station input from a user is set in the terminal, the management unit causes the terminal to generate a notification signal when the identified metro station is the arrival station or a station adjacent to the arrival station. . In a device capable of providing programs executed in another device through an interface,
Interface that can transmit and receive data to and from the outside,
The data is provided to the outside through the interface, it is configured to include a data storage means containing a program object executed in the wireless terminal,
When the program object is executed in a wireless terminal capable of accessing a plurality of wireless communication networks,
A function of transmitting a data request to a specific external server and receiving a connection point mapping information registered in connection with the corresponding train station by individually assigning a trust score to the access points installed at each train station,
A function of identifying a subway station in which the terminal is currently located based on a train station to which the access points listed in the access point mapping information are linked, and a trust score assigned to the access points registered among the access points found in the surrounding search. and,
When the train station is identified, the device is configured to include program codes for performing the function of providing the information to the specific server by constructing the status information including the access points found in the vicinity based on the identification time point.

Images