JP2018166257A - Location information-providing device, program and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a location information-providing device which can offer appropriate positional information without increasing a load on a mobile communication network.SOLUTION: A location information-providing device comprises: transmitting means for transmitting a third message through a mobile communication network on receipt of a second message from an application server, provided that the second message includes a token included in a first message sent from a user device to the application server and destination information of the user device, and the third message includes the token and is transmitted in such a way that the destination information is made a destination of the transmission; first determination means for determining a base station of the mobile communication network used in transmitting the third message to the user device on receipt of a fourth message from the user device in response to transmission of the third message; acquisition means for acquiring location information about a setting location of the base station determined by the first determination means; and providing means for performing a providing process to provide the location information to the application server.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a technique for providing position information of a user device to another device.

  For example, an application server connected to the Internet provides a service related to the position of a user device such as a mobile terminal. For example, the user apparatus obtains the position information using a positioning system such as GPS, and receives the position-based service from the application server by transmitting the position information to the application server.

  In a smart phone or the like, a GPS receiver is generally mounted. However, in a small device used in IOT (Internet Of Things) or the like, a GPS receiver is not generally mounted. Further, signals from GPS satellites cannot be received indoors or underground. It is also conceivable that the position information acquired by the user device differs from the actual position by a device that simulates radio waves used in a positioning system such as GPS.

  Non-Patent Document 1 discloses NETLOC (Network-Provided Information Information) that is used for notifying location information of a caller during a call to an emergency organization. In NTELOC, the position of the caller is specified based on the position information of the base station connected to the caller.

  Non-Patent Documents 2 and 3 disclose a mechanism for delegating authorization information called оAuth. For example, by using оAuth, a user who subscribes to an SNS service and has an account for the SNS service can access a photo sharing service different from the SNS service using the account for the SNS service. .

[Оline], 3GPP, [Search on February 28, 2017], Internet <URL: http://www.3gpp.org/DynaReport/FeatureOrStudyItemFile-480038. htm> RFC6749, IETF, October 2012 RFC6750, IETF, October 2012

  In order to always provide the correct location of the user apparatus to the application server, it is conceivable to provide location information that can be acquired by NETLOC to the application server by the оAuth mechanism. However, since NETLOC is a mechanism for notifying a location to an emergency organization, location information can be provided to an external application server regardless of the intention of the user using the user device. In order to prevent this, it is necessary to change the NETLOC specification.

  Also, in оAuth, first, access is made from the authority transfer source (location information provider, in this case, the communication carrier) to the authority transfer destination (location information using side, in this case, the application server). Issue a token. Then, the authority transfer destination having the access token is permitted to access the position information held by the authority transfer source. Therefore, unless the time limit is set for the access token, the authority transfer destination can always acquire the position of the user device, which is not preferable. For this reason, it is conceivable that access to the location information by the access token is limited to one time. However, since a lot of processing is required to issue the access token, the application server needs to acquire the location information. When an access token issuance process is performed each time it occurs, the load on the authority transfer source, that is, the mobile communication network increases.

  The present invention provides a position information providing apparatus, program, and method that can provide valid position information without increasing the load on a mobile communication network.

  According to an aspect of the present invention, when the location information providing apparatus receives a second message including the token included in the first message transmitted from the user apparatus to the application server and the destination information of the user apparatus from the application server, When a fourth message is received from the user device as a response to the transmission of the third message including the token with the destination information as a destination and the third message including the token, and the transmission of the third message. , First determination means for determining a base station of the mobile communication network used when transmitting the third message to the user apparatus, and position information regarding the installation position of the base station determined by the first determination means. Acquisition means for acquiring and providing process for providing the position information to the application server Characterized in that it and a providing means for performing.

  According to the present invention, it is possible to provide valid location information without increasing the load on the mobile communication network.

The system block diagram by one Embodiment. The sequence diagram of the positional information provision process by one Embodiment. The block diagram of the positional information provision apparatus by one Embodiment.

  Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings. In addition, the following embodiment is an illustration and does not limit this invention to the content of embodiment. In the following drawings, components that are not necessary for the description of the embodiments are omitted from the drawings.

  FIG. 1 shows a system configuration according to the present embodiment. The mobile communication network 1 is, for example, a network that conforms to the 3GPP standard, and the base station 13 communicates with the user apparatus 4 by radio. The mobile communication network 1 is connected to the Internet 2, and the application server 3 is connected to the Internet 2. The user device 4 can communicate with the application server 3 via the base station 13.

  As a device of the mobile communication network 1 necessary for the description of the present invention, a location information providing device 10, an SMS server 11, and a management server 12 are shown in FIG. The SMS server 11 is a server that processes SMS (short message service) messages (hereinafter, SMS messages). Further, the management server 12 includes base station information indicating the installation position of each base station 13 in the mobile communication network 1 and the identifier of each base station 13, the transmission destination and transmission of the SMS message transmitted by the SMS server 11. An SMS transmission history indicating the time and the identifier of the base station 13 that processed the transmission of the SMS message is stored. The management server 12 may be a single device or a plurality of devices connected via a network. When the management server 12 is composed of a plurality of devices, the above information is distributed and stored. obtain. Note that when the user device 4 further includes, for example, a WiFi interface, the user device 4 can communicate with the application server 3 via a WiFi access point (not shown) without going through the mobile communication network 1. In the configuration of FIG. 1, it is assumed that the user device 4 needs to provide location information of the user device 4 to the application server 3 in order to receive service provision from the application server 3.

  FIG. 2 is a sequence diagram of processing for providing location information of the user device 4 to the application server 3. In S <b> 1, the user device 4 transmits a service request message to the application server 3 in order to receive a service provided by the application server 3. The service request message includes the telephone number of the user device 4 and a token randomly generated by the user device 4. If authentication of the user device 4 by the application server 3 is required, the authentication information of the user device 4 can be included in the service request message. The user server 4 may be authenticated by the application server 3 before the service request message is transmitted. When receiving the service request message, the application server 3 transmits the position request message to the position information providing apparatus 10 in S2. The location request message includes the telephone number received from the user device 4, the token, and the identifier # 1 generated by the application server 3. When authentication of the application server 3 by the position information providing apparatus 10 is necessary, the authentication information of the application server 3 can be included in the position request message. In addition, the structure which performs the authentication of the application server 3 by the positional information provision apparatus 10 in advance may be sufficient.

  When receiving the location request message, the location information providing device 10 transmits an SMS message addressed to the telephone number of the user device 4 included in the location request message to the SMS server 11 in S3. This SMS message is transmitted to the user device 4 based on the number. In this SMS message, a token generated by the user device 4 included in the location request message, a transmission time of the SMS message, an identifier # 2 generated by the location information providing device 10, and a common key for the user device 4 are generated. Key generation information for communication and communication information for communicating with the position information providing apparatus 10, for example, the IP address of the position information providing apparatus 10 and a port number used for communication are included. For generating the common key, any key exchange algorithm such as a Diffie-Helman key exchange algorithm can be used, and the key generation information follows the key exchange algorithm to be used.

  When receiving the SMS message, the user device 4 determines which service request message is the response based on the token included in the SMS message. If it is possible to determine to which service request message the received SMS message is a response, the user apparatus 4 generates a common key based on the key generation information included in the SMS message in S4. In step S5, a response message to the received SMS message is transmitted to the position information providing apparatus 10. For this transmission, the user apparatus 4 uses communication information included in the SMS message. The response message includes the identifier # 2 included in the SMS message and the transmission time. Further, the response message includes key generation information for causing the location information providing apparatus 10 to generate the common key generated by the user apparatus in S4. Note that the processes of S4 and S5 can be automatically performed by the user apparatus 4 in response to the user apparatus 4 receiving the SMS message in S3. Alternatively, when the user device 4 receives the SMS message in S3, a message indicating that the location information is provided is displayed on the display of the user device 4, and the user of the user device 4 performs an operation for agreeing to provide the location information. Only when it is performed on the device 4, it is possible to perform the processing of S4 and S5. When the location information providing apparatus 10 receives the response message from the user apparatus 4 in S5, the position information providing apparatus 10 determines which SMS message the response message corresponds to based on the identifier # 2 included in the response message. In S6, the key generation included in the response message Based on the information, the same common key as the user apparatus 4 is generated.

  Subsequently, the location information providing apparatus 10 performs location information acquisition processing with the management server 12 in S7. In the present embodiment, the position information of the user apparatus 4 is the position of the base station 13 that transmitted the SMS message to the user apparatus 4 in S3. The area covered by the base station 13, that is, the range of the cell is, for example, several hundred meters to several kilometers, and in this embodiment, the position of the user apparatus 4 is specified by the cell granularity. For this reason, the location information providing apparatus 10 searches the SMS history information of the management server using the telephone number of the user apparatus 4 that is the destination of the SMS message transmitted in S3 and the transmission time as keys, and the user apparatus 4 in S3. The identifier of the base station 13 that has processed the SMS message transmitted to is determined, and the position of the base station 13 is determined based on the base station information. As described above, the position of the base station 13 is the position of the user device 4.

  Subsequently, the location information providing apparatus 10 performs a provided information storage process in S8. Specifically, an electronic signature for the transmission time of the SMS message in S3, the telephone number of the user device 4 and the location information of the user device 4 is generated. The electronic signature is performed using the secret key of the position information providing apparatus 10. Then, provision information is generated by encrypting the SMS message transmission time, the telephone number of the user device 4, the location information of the user device, and the electronic signature with a common key. The location information providing device 10 stores the provided information in the location information providing device 10 or a server device (not shown). The position information providing apparatus 10 transmits a position response message to the application server 3 in S9. This location response message includes a URL for accessing the provided information, a common key necessary for decrypting the provided information, and an identifier # 1. The application server 3 determines which location request message is the response based on the identifier # 1, obtains the provision information by accessing the URL included in the location response message, and provides the provision information using the common key included in the provision information Decrypt information. Then, it is confirmed whether or not the transmission time, telephone number, and position information are falsified by the electronic signature included in the provided information. If the falsification is not falsified, the user device 4 having the telephone number at the transmission time It is determined that the user device 4 is located, and a service based on the position is provided to the user device 4. Since the location response message in S9 includes a common key, secure communication such as SSL is used for the location response message.

  As described above, in the present embodiment, the position information is provided to the application server 3 only after the user device 4 performs the process of S5. The process of S5 is performed by receiving an SMS message including the same token as the token generated by the user apparatus 4 in S1 from the position information providing apparatus 10, and therefore, the user of the user apparatus 4 is not intended by the user apparatus 4 Can be prevented from being provided to the application server 3. Further, the application server 3 can acquire only the position when the user device 4 makes a service request to the application server 3 in S1, and after the user device 4 receives service provision from the application server 3. It is possible to prevent the application server 3 from acquiring the position. In order to ensure this, when the period until the user apparatus 4 receives the SMS message in S3 after transmitting the service request message in S1 exceeds the predetermined value, the user apparatus 4 A configuration in which processing is not performed may also be employed.

  In the present embodiment, the location information of the user device 4 provided to the application server 3 is the location of the base station 13 that can communicate with the user device 4 when the user device 4 makes a service request in S1, The correctness of the position of the device 4 is guaranteed. In this embodiment, it is not necessary to perform a complicated access token issuing process, and the processing load of the mobile communication network 1 is not heavy.

  In the present embodiment, a common key is generated by the processes of S3 and S5, and this common key is notified to the application server 3 in S9. However, a configuration in which a common key is generated by the processes of S2 and S9 may be used. In this case, the location information providing apparatus 10 receives the key generation information from the application server 3 in S2, generates a common key, and generates the provided information with the common key. Further, the location information providing apparatus 10 transmits key generation information for causing the application server 3 to generate the common key in S9. Therefore, in this case, the process related to the generation of the common key in S3 to S6 is not necessary. Moreover, the structure which stores a common key with respect to the positional information provision apparatus 10 and the application server 3 in advance may be sufficient. Therefore, in this case, the process related to the generation of the common key in FIG. 2 is not necessary.

  In the present embodiment, the provided information is stored in the location information providing device 10 or a server device (not shown). In S9, the location information providing device 10 obtains information for accessing the provided information, that is, a URL. It was transmitted to the application server 3. However, the provision information may be transmitted directly to the application server 3. Furthermore, the configuration may be such that a secure communication path is used instead of encrypting position information and the like with a common key. That is, for example, the location information providing apparatus 10 stores the provided information in plain text, but the application server 3 may be configured to use a secure communication protocol when accessing the provided information. Alternatively, the position information providing apparatus 10 may be configured to transmit the plain text provided information to the application server 3 using a secure communication protocol. In these cases, the process related to the generation of the common key can be omitted.

  FIG. 3 is a configuration diagram of the position information providing apparatus 10. The transmission / reception unit 104 transmits / receives each message shown in FIG. The message processing unit 101 performs processing for generating a message to be transmitted, analyzing the received message, and processing corresponding to the received message. For example, when the message processing unit 101 receives a location request message, the message processing unit 101 generates an SMS message based on the location request message and transmits the SMS message via the transmission / reception unit 104. In addition, when the response message is received, the common key generation unit 102 generates a common key, and generates and transmits / receives a message for acquiring position information to / from the management server 12. Furthermore, when the location information is acquired from the management server 12, the provision processing unit 103 is caused to perform provision information storage processing. When the provision information storage processing is completed, a location response message is generated and transmitted via the transmission / reception unit 104.

  The position information providing apparatus 10 according to the present invention can be realized by a program that causes a computer to operate as the position information providing apparatus 10. These computer programs can be stored in a computer-readable storage medium or distributed via a network.

  101: Message processing unit, 102: Common key generation unit, 103: Provision processing unit, 104: Transmission / reception unit

Claims (9)

When the second message including the token included in the first message transmitted from the user device to the application server and the destination information of the user device is received from the application server, the third message including the token as the destination information. Transmitting means for transmitting via a mobile communication network;
When a fourth message is received from the user apparatus as a response to the transmission of the third message, a first base station of the mobile communication network used to transmit the third message to the user apparatus is determined. 1 determination means;
Acquisition means for acquiring position information relating to the installation position of the base station determined by the first determination means;
Providing means for performing a providing process for providing the location information to the application server;
A position information providing device comprising:   The position information providing apparatus according to claim 1, wherein the providing unit encrypts the position information with a common key and provides the encrypted position information to the application server. The common key is generated by executing a key exchange algorithm with the user device,
The third message includes information notified to the user apparatus in the key exchange algorithm,
The fourth message includes information notified from the user device by the location information providing device in the key exchange algorithm,
The position information providing apparatus according to claim 2, wherein the providing unit transmits the common key to the application server in the providing process. The common key is generated by executing a key exchange algorithm with the application server,
The second message includes information notified from the application server in the key exchange algorithm,
The position information providing apparatus according to claim 2, wherein the providing unit transmits information notified to the application server in the key exchange algorithm in the providing process.   In the providing process, the providing means stores the encrypted location information in the location information providing device or an external server, and stores the encrypted location information in the location information providing device or the external server. 5. The position information providing apparatus according to claim 2, wherein information for accessing the position information is notified to the application server. 6.   The first determination unit searches the history information of the third message transmitted by the mobile communication network based on the transmission time of the third message and the telephone number of the user device, thereby determining the third message as the user device. The position information acquisition apparatus according to claim 1, wherein a base station of the mobile communication network used when transmitting to the mobile station is determined. The destination information is a telephone number of the user device,
The position information acquiring apparatus according to claim 1, wherein the message is an SMS message.   A program that causes a computer to function as the position information acquisition apparatus according to claim 1. The user device sends a first message including a token and destination information of the user device to the application server;
The application server transmits a second message including the token included in the first message and destination information of the user device to a location information acquisition device;
The location information acquisition device transmits the third message including the token included in the second message via the mobile communication network, with the destination information included in the second message as a destination;
The user device transmits a fourth message to the location information acquisition device as a response to the reception of the third message;
When the location information acquisition device receives the fourth message, it determines a base station of the mobile communication network used when transmitting the third message to the user device;
The position information acquisition device acquires position information related to the determined installation position of the base station;
The position information acquisition device performs a providing process of providing the position information to the application server;
A location information providing method comprising:

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