JP4560529B2 - Position information acquisition apparatus, position information acquisition method, and position information acquisition system. - Google Patents

Description

  The present invention relates to a position information acquisition apparatus, a position information acquisition method, and a position information acquisition system that acquire position information of a roaming-in user in a roaming network.

  In recent years, with the spread of mobile devices such as mobile phones, networks corresponding to the LCS (Location Service) function defined by 3GPP (3rd Generation Partnership Project) have begun to be built. It has become possible to notify location information to emergency organizations that are LCS clients.

By the way, since the location information of the user is managed by an HLR (Home Location Register) of the home network, if there is a request for obtaining location information of a roaming-in user located in the local network from an emergency organization, a GMLC ( Gateway Mobile Location Center) requests the location information of the user from the HLR of the home network and obtains the location information via the device where the user is located, so that the location information of the roaming in user is urgently It is possible to notify the organization (for example, see Non-Patent Document 1).
3GPP TS 23.271 V5.13.0 (2004-12), 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Functionalstage 2 description of Location Services (LCS) (Release 5), [Search March 23, 2005], Internet <http://www.3gpp.org/ftp/Specs/2006-12/Rel-5/23_series/23271-5d0.zip>

  However, in order to acquire position information for a roaming in user by the LCS function, the roaming in user's home network also needs to support the LCS function. Therefore, even if it receives a location information acquisition request for a roaming in user whose home network is a rope that does not support the LCS function from the LCS client, the location information cannot be acquired, and the location information of the roaming in user is There was a problem that the emergency organization could not be notified.

  Accordingly, the present invention provides a position information acquisition device, a position information acquisition device, and a position information acquisition device that can notify roaming-in-user position information when receiving a position information acquisition request from an LCS client even if the home network does not support the LCS function. An object is to provide an information acquisition method and a position information acquisition system.

A location information acquisition device according to the present invention is a location information acquisition device that acquires location information of a roaming in user in a roaming network in which the roaming in user is located. When a location information acquisition unit that acquires location information of an in-user, a storage unit that stores location information acquired by the location information acquisition unit, and a location information acquisition request of a roaming in-user from an LCS client having an LCS function, A location information notifying unit that reads out location information of the roaming in user stored in the storage unit and notifies the LCS client of the location information, and the location information acquiring unit cannot acquire the location information of the roaming in user. If this happens, set dummy information as location information and Knowledge means, location information acquisition request from the LCS client only if it is within the roaming-in user and LCS a call with a client or end call after a predetermined time, and notifies the location information.

The location information acquisition method according to the present invention is a location information acquisition method for acquiring location information of a roaming in user in a roaming network where the roaming in user is located. A location information acquisition step for acquiring location information of a roaming in user, a storage step for storing the location information acquired in the location information acquisition step, and a location information acquisition request for a roaming in user from an LCS client having an LCS function A location information notifying step of reading out the location information of the roaming in user stored in the storage processing step and notifying the location information to the LCS client, and the location information acquisition step can acquire the location information of the roaming in user. If not, place dummy information Set as information, location information notification step, the position information acquisition request from the LCS client only if it is within the roaming-in user and a call between the LCS client or end call after a predetermined time, notifies the location information It is characterized by.

According to the position information acquisition apparatus and the position information acquisition method of the present invention, when the roaming-in user makes a call in the roaming network, the position information is acquired from the LCS client by storing the position information of the roaming-in user. When receiving the request, it is possible to obtain the roaming-in user location information from the storage means of the own network without obtaining the location information from the home network. For this reason, even when the home network does not support the LCS function, it is possible to notify the roaming-in-user location information when receiving a location information acquisition request from the LCS client. Then, by detecting the dummy information, the LCS client can detect whether the location information acquisition apparatus has not received the location information of the roaming in user because the location information acquisition device has not acquired the location information. It becomes possible to easily determine whether or not location information is notified because a location information acquisition request is made during a call or at a time other than a predetermined time after the call ends.

The location information acquisition device according to the present invention is a location information acquisition device that acquires location information of a roaming in user in a roaming network in which the roaming in user is located. A first position information acquisition unit that acquires identification information indicating a device that performs call processing and is positioned above the roaming-in user; a storage unit that stores the identification information acquired by the first position information acquisition unit; When receiving a roaming-in-user location information acquisition request from an LCS client having an LCS function, the identification information stored in the storage means is read, and the roaming-in user location information is acquired from the device indicated by the identification information. The location information acquired by the second location information acquisition unit and the second location information acquisition unit are passed to the LCS client. It comprises a location information notification means for, the second position information obtaining means, if not acquired the position information of the roaming-in user, and sets the dummy information as the position information, the position information notification unit, LCS client The location information is notified only when the location information acquisition request from the mobile phone is during a call between the roaming-in user and the LCS client or within a predetermined time after the call ends

According to the position information acquisition apparatus of the present invention, when a roaming in user makes a call in a roaming network, the position of the roaming in user is identified in units of devices that are located above the roaming in user and perform call processing. In addition, when a location information acquisition request is received from the LCS client, the location information of the roaming-in user can be acquired from this device. Therefore, even if the home network does not support the LCS function, when receiving a location information acquisition request from the LCS client, it is possible to notify the location information of the roaming-in user while reducing the processing load during a call. It becomes possible. Then, by detecting dummy information, the LCS client could not acquire the location information of the roaming in user because it could not acquire the location information. It becomes possible to easily determine whether or not location information is notified because a location information acquisition request was made at a time other than a predetermined time.

  Moreover, it is preferable that a positional information acquisition means or a 1st positional information acquisition means acquires a positional information or identification information at the time of a roaming in user's transmission. According to this location information acquisition device, in order to acquire the location information of the roaming-in user or the identification information of the device that performs the roaming-in-user call processing triggered by the transmission by the roaming-in user, It is possible to reliably acquire the position information, and it is possible to reliably notify the position information in response to the subsequent position information acquisition request.

  Moreover, it is preferable that a positional information acquisition means or a 1st positional information acquisition means acquires positional information or identification information at the time of a roaming in user's end of a talk. According to this location information acquisition device, the location information of the roaming-in user who has made a call in order to acquire the location information of the roaming-in user or the identification information of the device performing the roaming-in-user call processing in response to the end of the roaming-in-user The position information can be reliably measured, and the position information can be reliably notified in response to the subsequent position information acquisition request. Further, according to this position information acquisition apparatus, even when the roaming in user moves after making a call, it is possible to acquire the latest roaming in user position information or identification information of the apparatus that performs the roaming in user call processing. Therefore, it is possible to improve the reliability of the position information to be notified.

In the roaming network in which the roaming-in user is located, the positional information acquisition system according to the present invention obtains the roaming-in-user position information by the GMLC serving as an interface between the roaming in-user call processing and the roaming network. An MSC is a location information acquisition system that includes location information acquisition means for acquiring location information of a roaming-in user when a roaming-in user makes a call in a roaming network. The GMLC is acquired by the location information acquisition means. When a location information acquisition request for a roaming-in user is received from an LCS client having an LCS function and storage means for storing the location information, the location information of the roaming-in user stored in the storage means is read, and this location information is Location information notification to notify LCS client Comprising a stage, a position information acquisition unit, if it can not be acquired position information of the roaming-in user, and sets the dummy information as the position information, the position information notification means, the position information acquisition request from the LCS client The location information is notified only during a call between the roaming-in user and the LCS client or within a predetermined time after the end of the call .

According to this location information acquisition system, when a roaming in user makes a call in a roaming network, the MSC that performs roaming in user call processing acquires the roaming in user location information and serves as an interface with the outside of the network. By storing location information in, when a location information acquisition request is received from an LCS client, it is possible to obtain roaming-in-user location information from the storage means of the local network without obtaining location information from the home network. can do. For this reason, even if the home network does not support the LCS function, it is possible to notify the roaming-in-user location information when receiving an LCS client location information acquisition request. Then, by detecting the dummy information, the LCS client can detect whether the location information acquisition apparatus has not received the location information of the roaming in user because the location information acquisition device has not acquired the location information. It becomes possible to easily determine whether or not location information is notified because a location information acquisition request is made during a call or at a time other than a predetermined time after the call ends.

  According to the present invention, even when the home network does not support the LCS function, it is possible to notify the location information of the roaming in user when receiving a location information acquisition request from the LCS client.

  Hereinafter, embodiments of a position information acquisition apparatus, a position information acquisition method, and a position information acquisition system according to the present invention will be described with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted. FIG. 1 is a network configuration diagram to which the position information acquisition system 1 according to the first embodiment is applied.

  As shown in FIG. 1, this network includes a home network 3 of a mobile communication terminal 2, a roaming network 4 in which the mobile communication terminal 2 is roaming in and provided with a location information acquisition system 1, and a roaming network. 4 and LCS client 5 connected to 4.

  The location information acquisition system 1 includes a mobile service switching center (MSC) 6 that performs call processing of the mobile communication terminal 2 and a GMLC 7 that serves as an interface with the outside of the network.

  The LCS client 5 is a company or ASP (Application Service Provider) that obtains this location information from the roaming network 4 and provides various services. In this embodiment, an emergency organization such as a police station or a fire station is the LCS client 5. Then, the LCS client 5 transmits a position information acquisition request for requesting the position information of the mobile communication terminal 2 to the GMLC 7 based on the LCS function.

  The mobile communication terminal 2 is a terminal such as a mobile phone and is a roaming-in user who roams in from the home network 3 to the roaming network 4. Then, in order to make a call with the LCS client 5, the mobile communication terminal 2 sends a call request including the identification number of the mobile communication terminal 2 and information on the notification destination number that is the telephone number of the LCS client 5 to the MSC 6. Send.

  The MSC 6 is a mobile communication exchange and is a logical node that performs call processing of the mobile communication terminal 2. As shown in FIG. 2, the MSC 6 functionally includes a roaming in-user determination unit 61, a position information notification determination unit 62, a positioning processing unit (position information acquisition unit) 63, and a position information notification request unit. 64 and an end-of-speech detector 65. As shown in FIG. 12, the MSC 6 physically includes a CPU 601, a ROM 602, a RAM 603, an auxiliary storage device 604, and a communication module 605. Each function described in FIG. 2 causes the communication module 605 to operate under the control of the CPU 601 by reading predetermined computer software on the CPU 601 and the RAM 603 shown in FIG. 12, and also in the RAM 603 and the auxiliary storage device 604. This is realized by reading and writing data.

  The roaming-in-user determining unit 61 is a mobile communication terminal 2 that has made a call request to the LCS client 5 and is a user who uses another network as a home network 3 and roams and is located in the roaming network 4 that is the own network. It is determined whether or not the user is a roaming-in user. The roaming-in-user determination unit 61 receives a call request output from the mobile communication terminal 2 and derives subscriber information held at the time of location registration based on the identification number of the mobile communication terminal 2. Then, the roaming-in-user determining unit 61 determines whether the mobile communication terminal or the roaming-in user uses the local network (roaming network 4) as a home network from the subscriber information.

  The location information notification determination unit 62 determines whether to notify the LCS client 5 of location information of the mobile communication terminal 2 or the like. The position information notification determination unit 62 determines whether or not the non-notification number (184) is added to the notification destination number detected by the roaming in-user determination unit 61. If the non-notification number is not added to the notification destination number, the position information notification determination unit 62 determines that the notification is a notification and causes the positioning processing unit 63 to perform a positioning process. On the other hand, if the non-notification number is added to the notification destination number, the position information notification determination unit 62 determines that the notification is not notified and causes the positioning processing unit 63 to perform the rough positioning process.

  The positioning processing unit 63 acquires position information indicating the position of the mobile communication terminal 2. When receiving a call request from the mobile communication terminal 2, the positioning processing unit 63 first acquires the MSC number of the MSC 6 that is performing the call processing of the mobile communication terminal 2. If the positioning information notification determination unit 62 determines that the notification is a notification, the positioning processing unit 63 causes the RNC (Radio Network Controller) 9 to position the mobile communication terminal 2 with GPS or the like as the positioning processing, and the positioning result from the RNC 9. Get the location information that is. On the other hand, when the positioning information notification determining unit 62 determines that the notification is not made, the positioning processing unit 63 causes the RNC 9 to search for (or measure) a base station that accommodates the mobile communication terminal 2 as the rough positioning process. Obtain base station information (position information) as a result of the search (or positioning). Note that the positioning processing unit 63 uses a dummy value (for example, “0”) as the location information or base station information when the location information or the base station information cannot be acquired by ending the speech before the positioning processing or the approximate positioning processing ends. Get as. And the positioning process part 63 acquires the time which acquired position information or base station information as positioning time by the timer function (not shown) with which MSC6 is provided.

  Further, the positioning processing unit 63 first acquires the MSC number of the MSC 6 that is performing the call processing of the mobile communication terminal 2 when the end-of-call detecting unit 65 detects the end-of-call as will be described later. Then, the positioning processing unit 63 causes the RNC 9 to search (or measure) a base station that accommodates the mobile communication terminal 2 as the rough positioning process, and base station information (position information) as a result of searching (or positioning) from the RNC 9. To get. Note that the positioning processing unit 63 acquires a dummy value (for example, “0”) as the base station information when the base station information cannot be acquired by ending the conversation before the rough positioning process ends. And the positioning process part 63 acquires the time which acquired base station information as positioning time by the timer function (not shown) with which MSC6 is provided.

  The location information notification request unit 64 requests the GMLC 7 to temporarily store the location information of the mobile communication terminal 2 and the like. The location information notification request unit 64 temporarily stores the location information and the like of the mobile communication terminal 2 and requests the LCS client 5 to notify the location information when the location information notification determination unit 62 determines that the notification is made. A location information notification request including the emergency engine notification flag is generated. Then, the location information notification request unit 64 sends the GMLC 7 the telephone number of the mobile communication terminal 2, the location information of the mobile communication terminal 2 acquired by the positioning processing unit 63, the MSC number of its own MSC 6, and the notification destination of the LCS client 5. A number, positioning time, and a position information notification request are transmitted. On the other hand, the location information notification request unit 64 requests that the location information and the like of the mobile communication terminal 2 be temporarily stored and the location information not be notified to the LCS client 5 when the location information notification determination unit 62 determines not to notify. A position information notification request including a temporary storage instruction and emergency engine non-notification flag is generated. Then, the location information notification request unit 64 notifies the GMLC 7 of the telephone number of the mobile communication terminal 2, the base station information of the mobile communication terminal 2 acquired by the positioning processing unit 63, the MSC number of its own MSC 6, and the notification of the LCS client 5. A destination number, positioning time, and a position information notification request are transmitted.

  The location information notification request unit 64 temporarily stores location information and the like of the mobile communication terminal 2 and does not notify the LCS client 5 of location information when the end-of-call detection unit 65 detects an end-of-call as will be described later. A position information notification request including a temporary storage instruction and an end-of-end flag for requesting is generated. Then, the location information notification request unit 64 sends to the GMLC 7 the telephone number of the mobile communication terminal 2, the base station information acquired by the positioning processing unit 63, the MSC number of its own MSC 6, the notification destination number of the LCS client 5, and the positioning time. , End time, and location information notification request.

  The end of call detecting unit 65 detects the end of call between the mobile communication terminal 2 and the LCS client 5. The end-of-call detection unit 65 detects that the mobile communication terminal 2 or the LCS client 5 disconnects the call, or that the call is disconnected and the end of the call because the mobile communication terminal 2 goes out of service area. Then, when detecting the end of the call, the end of call detecting unit 65 obtains the end of the call, notifies the positioning processing unit 63 of the end of the call and the time of the end of the call. Let the process do.

  The GMLC 7 serves as an interface with the LCS client 5, performs authentication of the LCS client 5, privacy control, and the like, and is a logical node that receives a location information acquisition request from the LCS client 5. As shown in FIG. 3, the GMLC 7 functionally includes a signal reception analysis unit (position information acquisition unit) 71, a storage unit (storage unit) 72, a position information notification unit 73, and a roaming in-user determination. Unit 74, position information presence / absence determination unit 75, position information notification determination unit 76, dummy value determination unit 77, and position information notification unit (position information notification means) 78. As shown in FIG. 12, the GMLC 7 physically has substantially the same configuration as the MSC 6.

  The signal reception analysis unit 71 acquires position information of the mobile communication terminal 2 transmitted from the MSC 6. The signal reception analysis unit 71 receives the location information or base station information of the mobile communication terminal 2 transmitted from the MSC 6, the MSC number of the own MSC 6, the notification destination number of the LCS client 5, the positioning time, and the location information notification request. The position information or base station information of the mobile communication terminal 2 is acquired. Then, the signal reception analysis unit 71 determines whether the position information notification request is a temporary storage instruction / emergency engine notification flag, a temporary storage instruction / emergency engine non-notification flag, or a temporary storage instruction / end flag. .

  The storage unit 72 is configured by a storage medium such as a hard disk, a RAM, and a ROM, and stores position information and the like of the mobile communication terminal 2. The storage unit 72 includes a location information database that stores telephone numbers, location information, base station information, MSC numbers, notification destination numbers, positioning times, and call termination times. When the signal reception analysis unit 71 detects a location information notification request for the temporary storage instruction / emergency engine notification flag or the temporary storage instruction / emergency engine non-notification flag or temporary storage instruction / end flag in the signal reception analysis unit 71, For each in-user mobile communication terminal 2, the mobile communication terminal 2 telephone number, location information, base station information, MSC number, notification destination number, and positioning time included in the location information communication request are Store it in association with the number. Further, when the end time is received from the MSC 6, the storage unit 72 stores this end time in association with the telephone number of the mobile communication terminal 2.

  For example, the mobile communication terminal 2 (roaming-in users A to C) that has requested transmission to the LCS client 5 without attaching a non-notification number, and the mobile communication terminal 2 (roaming-in users A to C) that has transmitted a non-notification number and requested transmission to the LCS client 5 FIG. 4 shows information stored in the location information database of the storage unit 72 when the roaming in users A and C are already finished and the roaming in users B and D are currently talking. It becomes like this. In this case, the telephone number, location information, MSC number, notification destination number, positioning time, and call end time are stored in each column of roaming in users A to C, and the telephone number is stored in the column of roaming in user D. , Base station number, MSC number, notification destination number, and positioning time are stored. Since the roaming-in users B and D are in a call, information indicating that the call is in progress is stored as the listening time until the end time is received and the end time.

  The location information notification unit 73 transmits the telephone number and location information of the mobile communication terminal 2 to the LCS client 5. When the signal reception analysis unit 71 detects the temporary storage instruction / emergency organization notification flag in the signal reception analysis unit 71, the location information notification unit 73 receives the mobile communication terminal 2 telephone number, location information, base station information, MSC number, and The notification destination number is transmitted to the LCS client 5 as a position information notification.

  The roaming in user determination unit 74 determines whether or not the mobile communication terminal 2 that has received the location information acquisition request from the LCS client 5 is a roaming in user. When the mobile communication terminal 2 makes a call origination request and receives a location information acquisition request for the mobile communication terminal 2 from the LCS client 5, the roaming-in-user determination unit 74 detects the telephone number of the mobile communication terminal 2 from the location information acquisition request. To do. When the mobile communication terminal 2 makes a call request with a non-notification number, the telephone number of the mobile communication terminal 2 is not basically notified to the LCS client 5, but if the LCS client 5 which is an emergency organization requests, the GMSC 7 You can get this phone number from Therefore, the LCS client 5 transmits a position information acquisition request including the telephone number of the mobile communication terminal 2 acquired in this way to the GMLC 7.

  Then, the roaming-in-user determining unit 74 refers to a registration database (not shown) in which the telephone number of the mobile communication terminal whose home network is the home network is registered. If the telephone number is a telephone number registered in the database, it is determined that this mobile communication terminal 2 is not a roaming-in user, and the telephone number of the mobile communication terminal 2 that is the location information acquisition request target is registered in the database. The mobile communication terminal 2 is determined to be a roaming-in user.

  The position information presence / absence determining unit 75 determines whether or not the position information of the mobile communication terminal 2 that is the position information acquisition request target is stored in the storage unit 72. When the roaming-in-user determining unit 74 determines that the mobile communication terminal 2 that is the location information acquisition request target is a roaming user, the location information presence / absence determining unit 75 refers to the location information database in the storage unit 72 and performs this movement. It is determined whether or not location information or base station information corresponding to the telephone number of the communication terminal 2 is stored in the storage unit 72.

  The position information notification determination unit 76 determines whether or not to notify the LCS client 5 of the position information of the mobile communication terminal 2 that is the position information acquisition request target. When the position information notification determining unit 76 determines that the position information or base station information of the mobile communication terminal 2 that is the position information acquisition request target is stored in the storage unit 72, the storage unit 72 Whether the mobile communication terminal 2 is talking with the LCS client 5 or within a predetermined time (for example, 20 seconds) after the call is determined by referring to the call end time stored in 72. The example of 20 seconds as the predetermined time after the end of the call is in line with the agreement that the location information of the mobile communication terminal 2 may be notified to the emergency organization within 20 seconds after the end of the call. It is. Then, the position information notification determination unit 76 determines to notify the LCS client 5 of the position information when the position information acquisition request is during a call of the mobile communication terminal 2 or within 20 seconds after the end of the call, and this position information acquisition request Is determined not to notify the LCS client 5 of position information when 20 seconds have passed after the end of the call of the mobile communication terminal 2.

  The dummy value determination unit 77 determines whether the location information or base station information of the mobile communication terminal 2 that is the location information acquisition request target stored in the storage unit 72 is a dummy value. The dummy value determination unit 77 compares the position information or base station information stored in the storage unit 72 with a dummy value (for example, “0”), and the position information or base station information does not match the dummy value. Is determined not to be a dummy value, and if the position information or base station information matches the dummy value, it is determined to be a dummy value.

  The location information notification unit 78 notifies the LCS client 5 of location information or base station information of the mobile communication terminal 2 that is a location information acquisition request target. When the position information notification determination unit 76 determines to notify the position information and the dummy value determination unit 77 determines that the position information notification unit 78 is not a dummy value, the position information notification determination unit 78 receives the position information acquisition request target from the storage unit 72. The position information or base station information of the mobile communication terminal 2 is read out. Then, the position information notification unit 78 sets the read position information or base station information as position information for notifying the LCS client 5. On the other hand, if the position information notification unit 78 determines that the position information notification determination unit 76 notifies the position information and the dummy value determination unit 77 determines that the position information is a dummy value, the position information read from the storage unit 72 is determined. In addition to the information, information indicating that the location information could not be measured due to call disconnection or the like is set as the location information to be notified to the LCS client 5. If the position information notification determination unit 76 determines not to notify the position information, the position information notification unit 78 indicates information indicating that notification cannot be performed because 20 seconds have passed after the end of the call as position information to be notified to the LCS client 5. Set. Then, the position information notification unit 78 notifies the LCS client 5 of the position information set in this way.

  Next, operations of the position information acquisition apparatus, the position information acquisition method, and the position information acquisition system according to the first embodiment will be described with reference to FIGS. FIG. 5 is a sequence diagram for explaining a processing operation at the time of a call by a roaming in user, FIG. 6 is a sequence diagram for explaining a processing operation at the end of a call, and FIG. 7 is a position information acquisition request by an emergency organization. It is a sequence diagram for demonstrating the processing operation at the time.

  First, with reference to FIG. 5, the processing operation at the time of a call by a roaming in user will be described. When a call request to the LCS client 5 is transmitted from the mobile communication terminal 2, the MSC 6 that performs call processing of the mobile communication terminal 2 receives this call request (step S1). The roaming-in-user determining unit 61 determines whether or not the mobile communication terminal 2 is a roaming-in user from the caller number included in the call request (step S2). If it is determined in step S2 that the user is a roaming-in user, the location information notification determination unit 62 determines whether to notify the LCS client 5 of the caller number and the location information (step S3).

  If it is determined in step S3 that the notification is made, the positioning processing unit 63 acquires the MSC number of the MSC 6 that is performing the call processing of the mobile communication terminal 2, and acquires the position information and the positioning time of the mobile communication terminal 2. A positioning process is performed (step S4). In step S4, when the position information of the mobile communication terminal 2 cannot be acquired, a dummy value is acquired as the position information.

  Next, the location information notification request unit 64 sends the telephone number of the mobile communication terminal 2, the location information of the mobile communication terminal 2, the MSC number, the notification destination number, the positioning time, and the temporary storage and emergency organization notification flag to the GMLC 7. A position information notification request including is transmitted (step S5).

  Next, the signal reception analysis unit 71 of the GMLC 7 acquires the location information of the mobile communication terminal 2 and detects the temporary storage and emergency organization notification flag of the location information notification request. When the signal reception analysis unit 71 detects the temporary storage instruction / emergency organization notification flag, the storage unit 72 stores the telephone number of the mobile communication terminal 2, the location information of the mobile communication terminal 2, the MSC number, the notification destination number, and the positioning. The time is associated with the telephone number and stored (step S6).

  Next, the location information notification unit 73 transmits the telephone number and location information of the mobile communication terminal 2 to the LCS client 5 as location information notification (step S7). Next, the location information notification unit 73 transmits a location information notification response to the MSC 6 as a response to the location information notification request from the MSC 6 (step S8), and ends the processing operation during a call by the roaming in user.

  On the other hand, if it is determined that the notification is not made in step S3 described above, the positioning processing unit 63 acquires the MSC number of the MSC 6 that is performing the call processing of the mobile communication terminal 2, and also accommodates the mobile communication terminal 2 A rough positioning process for acquiring the base station information and the positioning time is performed (step S9). In addition, in step S9, when base station information cannot be acquired, a dummy value is acquired as base station information.

  Next, the location information notification request unit 64 sends to the GMLC 7 the telephone number of the mobile communication terminal 2, the base station information of the mobile communication terminal 2, the MSC number, the notification destination number, the positioning time, and the temporary storage / emergency organization A position information notification request including a notification flag is transmitted (step S10).

  Next, when the signal reception analysis unit 71 of the GMLC 7 detects the temporary storage instruction / emergency organization non-notification flag, the storage unit 72 displays the telephone number, base station information, MSC number, notification destination number, and positioning time as a telephone number. Are stored in association with each other (step S11).

  Next, the location information notification unit 73 transmits a location information notification response to the MSC 6 as a response to the location information notification request from the MSC 6 (step S12), and ends the processing operation during a call by the roaming in user.

  Next, the processing operation at the time of the end of the talk will be described with reference to FIG.

  When the call between the mobile communication terminal 2 and the LCS client 5 is finished, the call end detection unit 65 of the MSC 6 detects the call end and acquires the call end time (step S13).

  Next, the positioning processing unit 63 acquires the MSC number of the MSC 6 that is performing the call processing of the mobile communication terminal 2, and acquires the base station information and the positioning time of the base station that accommodates the mobile communication terminal 2. A positioning process is performed (step S14). If base station information cannot be acquired in step S14, a dummy value is set as the base station information.

  Next, the location information notification request unit 64 sends to the GMLC 7 a telephone number of the mobile communication terminal 2, base station information of the mobile communication terminal 2, MSC number, notification destination number, positioning time, call end time, and temporary storage. The position information notification request including the cum end flag is transmitted (step S15).

  Next, when the signal reception analysis unit 71 of the GMLC 7 detects the temporary storage instruction / end flag, the storage unit 72 stores the telephone number, base station information, MSC number, notification destination number, positioning time of the mobile communication terminal 2, The end time is stored in association with the telephone number (step S16). If the information is already stored in step S16, it is rewritten with the telephone number, base station information, MSC number, notification destination number, positioning time, and call end time of mobile communication terminal 2 received in step S15. Remember.

  Next, the location information notification unit 73 transmits a location information notification response to the MSC 6 as a response to the location information notification request from the MSC 6 (step S17), and ends the processing operation at the end of the call.

  Next, with reference to FIG. 7, the processing operation at the time of the location information acquisition request by the emergency organization will be described. When the location information acquisition request of the mobile communication terminal 2 is transmitted from the LCS client 5, the GMLC 7 receives this location information acquisition request (step S21). Next, the GMLC 7 transmits a position information acquisition request response to the LCS client 5 as a response to the position information acquisition request from the LCS client 5 (step S22).

  Next, the roaming-in-user determining unit 74 determines whether or not the mobile communication terminal 2 that is the location information acquisition request target included in the location information acquisition request is a roaming in-user (step S23). If it is determined in step S23 that the user is a roaming-in user, the position information presence / absence determination unit 75 determines whether the storage unit 72 stores the position information or base station information of the mobile communication terminal 2 that is the position information acquisition request target. Is determined (step S24).

  In step S24, when it is determined that the location information or base station information of the mobile communication terminal 2 that is the location information acquisition request target is stored in the storage unit 72, the location information notification determination unit 76 stores the location information in the LCS client 5 Whether or not to notify is determined (step S25). If it is determined in step 25 that the location information is notified to the LCS client 5, the dummy value determination unit 77 stores the location information or base station information of the mobile communication terminal 2 that is the location information target stored in the storage unit 72. Is a dummy value (step S26).

  Next, when it is determined that the position information is notified in step S25 described above and is not a dummy value in step S26 described above, the position information notification unit 78 is a mobile communication terminal that is a position information acquisition request target. 2 is read from the storage unit 72, and the read position information or base station information is set as position information to be notified to the LCS client 5 (step S27). When it is determined that the position information is notified in step S25 described above and is determined to be a dummy value in step S26 described above, the position information notification unit 78 cannot measure the position information due to call disconnection or the like. Is set as position information to be notified to the LCS client 5 (step S27).

  On the other hand, when it is determined not to notify the position information in step S25 described above, the position information notification unit 78 notifies the LCS client 5 of information indicating that notification cannot be performed because 20 seconds have passed after the end of the call as the position information notification. The position information is set (step S27).

  Next, the position information notification unit 78 transmits the position information set in step S27 to the LCS client 5 as position information notification (step S28).

  Next, the LCS client 5 transmits a location information notification response to the GMSC 7 as a response to the location information notification from the GMSC 7 (step S29), and ends the processing operation at the time of the location information acquisition request by the emergency organization.

  As described above, according to the position information acquisition device, the position information acquisition method, and the position information acquisition system according to the first embodiment, when the mobile communication terminal 2 makes a transmission request in the roaming network 4, the mobile communication terminal 2, by storing the location information or base station information of the mobile station 2, even if the location information of the mobile communication terminal 2 is not acquired from the home network 3 when receiving a location information acquisition request from the LCS client 5. The location information or base station information of the mobile communication terminal 2 that is the location information acquisition request target can be acquired from the storage unit 72. For this reason, even if the home network 3 does not support the LCS function, the location information of the mobile communication terminal 2 can be notified to the LCS client 5 when a location information acquisition request is received from the LCS client 5. .

  Further, according to the position information acquisition apparatus, the position information acquisition method, and the position information acquisition system according to the first embodiment, the LCS is detected by detecting the dummy value from the position information or the base station information stored in the storage unit 72. If the accurate location information is not notified from the GMLC 7, the client 5 has not been able to acquire the location information of the roaming-in user, or the location information is acquired during a call between the roaming-in user and the LCS client or at a time other than the predetermined time after the call ends. It is possible to easily determine whether the location information is not notified because of the request.

  In addition, according to the position information acquisition device, the position information acquisition method, and the position information acquisition system according to the first embodiment, the position information or base station information of the mobile communication terminal 2 is acquired in response to a transmission request from the mobile communication terminal 2. Therefore, it is possible to reliably acquire the location information or base station information of the mobile communication terminal 2 that has made a call, and reliably receive the mobile communication when receiving a location information acquisition request from the LCS client 5 thereafter. The location information of the terminal 2 can be notified.

  Moreover, according to the position information acquisition apparatus, the position information acquisition method, and the position information acquisition system according to the first embodiment, the base station information of the mobile communication terminal 2 triggered by the end of the talk between the mobile communication terminal 2 and the LCS client 5 Therefore, it is possible to reliably measure the base station information that accommodates the mobile communication terminal 2 that has made a call, and to reliably receive the position information of the mobile communication terminal 2 in response to a subsequent position information acquisition request from the LCS client 5. Can be notified. Further, even if the mobile communication terminal 2 moves after the transmission, the base station information that accommodates the latest mobile communication terminal 2 can be acquired, so that the reliability of the position information notified to the LCS client 5 is improved. It becomes possible.

  Next, a position information acquisition device, a position information acquisition method, and a position information acquisition system in the second embodiment will be described. The second embodiment is basically the same as the first embodiment. The second embodiment differs from the first embodiment in that the MSC positioning processing unit and the end-of-call detection unit are different from each other, and that an MSC number presence / absence determination unit is provided instead of the GMLC position information presence / absence determination unit. The only difference is that the positioning request unit is added to the GMLC and the position information notification unit of the GMLC is different.

  FIG. 8 is a diagram illustrating the functional configuration of the MSC in the position information acquisition apparatus according to the second embodiment. FIG. 9 is a diagram illustrating the functional configuration of the GMLC in the position information acquisition apparatus according to the second embodiment. is there.

  As shown in FIG. 8, the MSC 6 functionally includes a roaming in-user determination unit 61, a location information notification determination unit 62, and a location information notification request unit 64, and further includes a positioning processing unit (first A position information acquisition unit, a second position information acquisition unit) 621, and an end-of-call detection unit 622.

  As shown in FIG. 9, the GMLC 7 functionally includes a signal reception analysis unit (first position information acquisition unit) 71, a storage unit (storage unit) 72, a position information notification unit 73, and a roaming in user. A determination unit 74; a position information notification determination unit 76; an MSC number presence / absence determination unit 721; a positioning request unit (second position information acquisition unit) 722; and a position information notification unit (position information notification unit). 723.

When the positioning processing unit 621 determines to notify the LCS client 5 of the location information notification determination unit 62 as to whether or not to notify the LCS client 5 of the location information of the mobile communication terminal 2 as processing when the roaming-in user makes a call The same positioning process as in the first embodiment is performed. On the other hand, the positioning processing unit 621 searches (positions) and acquires only the MSC number (position information) of the MSC 6 that performs the call processing of the mobile communication terminal 2 when the location information notification determination unit 62 determines that the notification is not made. And the positioning process part 611 acquires the time which acquired the MSC number as positioning time by the timer function (not shown) with which MSC6 is provided.

When the positioning processing unit 621 receives a positioning request of the mobile communication terminal 2 from the GMLC 7 as a process at the time of the position information acquisition request by the LCS client 5, the positioning processing unit 621 causes the RNC 9 to position the mobile communication terminal 2 with GPS or the like, The position information of the positioning result is acquired from the RNC 9. And the positioning process part 621 transmits this positional information to GMLC7 as a positioning result notification.

  When detecting that the call between the mobile communication terminal 2 and the LCS client 5 has been disconnected and ended the call, the call end detection unit 622 acquires the call end time, and obtains the telephone number and call end time of the mobile communication terminal 2. Send to GMLC7.

  The MSC number presence / absence determination unit 721 determines whether or not the MSC number of the MSC 6 that performs the call processing of the mobile communication terminal 2 that is the target of the location information acquisition request is stored in the storage unit 72. When the roaming-in-user determining unit 74 determines that the mobile communication terminal 2 that is the location information acquisition request target is a roaming user, the MSC number presence / absence determining unit 721 refers to the location information database in the storage unit 72 and performs this movement. It is determined whether or not the MSC number associated with the telephone number of the communication terminal 2 is stored in the storage unit 72.

  The positioning request unit 722 is a mobile communication terminal that is a location information acquisition request target for the MSC 6 of the MSC number that is stored in the storage unit 72 in association with the telephone number of the mobile communication terminal 2 that is the location information acquisition request target. A positioning request for positioning 2 is transmitted.

  The position information notification unit 723 sets the position information that is the positioning result notification transmitted from the MSC 6 as the position information to be notified to the LCS client 5. In addition, when the position information notification determination unit 76 determines not to notify the position information, the position information notification unit 723 notifies the LCS client 5 of information indicating that the notification cannot be performed because 20 seconds have passed after the end of the call. Set. Then, the position information notification unit 723 notifies the LCS client 5 of the set position information.

  Next, operations of the position information acquisition device, the position information acquisition method, and the position information acquisition system according to the second embodiment will be described with reference to FIGS. FIG. 10 is a sequence diagram for explaining a processing operation when a roaming-in user makes a call, and FIG. 11 is a sequence diagram for explaining a processing operation when a location information acquisition request is made by an emergency organization.

With reference to FIG. 10, the processing operation when the roaming-in user makes a call will be described. First, similarly to the first embodiment, the processes of steps S1 to S3 are performed. And when it determines with notification in determination of step S3, the positioning process part 621 performs the process of step S4-S8 similarly to 1st Embodiment, and progresses to step S44.

On the other hand, if it is determined in step S3 that there is no notification, the positioning processing unit 621 acquires the MSC number of the MSC 6 that is performing the call processing of the mobile communication terminal 2 (step S40).

  Next, the location information notification request unit 64 sends to the GMLC 7 the telephone number of the mobile communication terminal 2, the base station information of the mobile communication terminal 2, the MSC number, the notification destination number, the positioning time, and the temporary storage / emergency organization A position information notification request including a notification flag is transmitted (step S41).

  Next, the signal reception analysis unit 71 of the GMLC 7 acquires the MSC number of the MSC 6 that performs call control of the mobile communication terminal 2 and detects the temporary storage instruction and emergency engine non-notification flag of the location information notification request. When the signal reception analysis unit 71 detects the temporary storage instruction / emergency organization non-notification flag, the storage unit 72 associates the telephone number, MSC number, notification destination number, and positioning time of the mobile communication terminal 2 with the telephone number. (Step S42).

  Next, the location information notification unit 73 transmits a location information notification response to the MSC 6 as a response to the location information notification request from the MSC 6 (step S43), and proceeds to step S44.

  In step S44, when detecting the end of the call (step S44), the end of call detecting unit 622 of the MSC 6 transmits the telephone number and end of call time of the mobile communication terminal 2 to the GMLC 7 (step S45).

  Next, when the GMLC 7 receives the telephone number and the call end time transmitted from the call end detection unit 622, the storage unit 72 stores the call end time in association with the telephone number (step S46). When the process of step S46 is finished, the processing operation during a call by the roaming-in user is finished.

  Next, with reference to FIG. 11, the processing operation at the time of the location information acquisition request by the emergency organization will be described. First, similarly to the first embodiment, the processes in steps S21 to S25 are performed.

  If it is determined in step S25 that the location information is to be notified to the LCS client 5, the positioning request unit 722 stores the MSC associated with the telephone number of the mobile communication terminal 2 that is the location information acquisition request target. A positioning request is transmitted to the numbered MSC 6 (step S51).

Next, when the MSC 6 receives a positioning request from the GMLC 7, the positioning processing unit 621 performs a positioning process for acquiring the position information of the mobile communication terminal 2 (step S52). Next, the positioning processing unit 621 notifies the GMLC 7 of this position information as a positioning result notification (step S53).

  Next, when the GMLC 7 receives the positioning result notification from the MSC 6, the position information notification unit 723 sets the position information of the positioning result notification as position information to be notified to the LCS client 5 (step S54).

  On the other hand, if it is determined in step S25 that position information is not notified, the position information notification unit 723 notifies the LCS client 5 of information indicating that notification cannot be performed because 20 seconds have passed since the end of the call. The position information is set (step S54).

  As in the first embodiment, the position information notification unit 723 transmits the position information set in step S27 to the LCS client 5 as the position information notification (step S28). The LCS client 5 receives the information from the GMSC 7 As a response to the location information notification, a location information notification response is transmitted to the GMSC 7 (step S29), and the processing operation at the time of the location information acquisition request by the emergency organization is terminated.

  As described above, according to the position information acquisition device, the position information acquisition method, and the position information acquisition system according to the second embodiment, when the mobile communication terminal 2 and the LCS client 5 make a call in the roaming network 4. The MSC number of the MSC 6 that is located above the mobile communication terminal 2 and performs call processing of the mobile communication terminal 2 is stored, and when the location information acquisition request is received from the LCS client 5, it is read from the storage unit 72. By positioning the mobile communication terminal 2 with respect to the MSC 6 having the MSC number, the location information of the mobile communication terminal 2 can be acquired. The location information of the communication terminal can be notified.

  Furthermore, when the mobile communication terminal 2 makes a call, it is only necessary to acquire the MSC number of the MSC 6 that performs the call processing of the mobile communication terminal 2, so that the mobile communication terminal 2 and the LCS client 5 make a call. Even when positioning cannot be performed, the location information of the mobile communication terminal 2 can be notified when a location information acquisition request is received from the LCS client 5.

  The present invention has been specifically described above based on the embodiment. However, the present invention is not limited to the above embodiment. For example, in the above embodiment, the positioning processing unit determines the position information notification determination unit. Although it has been described that the positioning process and the approximate positioning process are selected according to the result or the like, the positioning process or the approximate positioning process may be performed regardless of the determination result.

  In addition, although the rough positioning process has been described as searching for (positioning) base station information of a base station that accommodates the mobile communication terminal, if the extremely detailed position of the mobile communication terminal is not specified, the mobile terminal moves with other information. The position of the communication terminal may be specified.

  Further, in the first embodiment, when the rough positioning process is performed when the roaming-in user makes a call, the base station information is notified in response to the position information acquisition request from the LCS client. If there is a location information acquisition request from the mobile station, the positioning process of the mobile communication terminal 2 may be performed as in the second embodiment, and the location information of the mobile communication terminal 2 may be notified to the LCS client.

The network block diagram to which the position information acquisition system which concerns on 1st Embodiment is applied. It is a figure which illustrates the function structure of MSC. It is a figure which illustrates the function structure of GMLC. It is a figure which illustrates the composition of a position information database. It is a sequence diagram for demonstrating the processing operation at the time of the telephone call by a roaming in user. It is a sequence diagram for demonstrating the processing operation at the time of a talk end. It is a sequence diagram for demonstrating the processing operation | movement at the time of the positional information acquisition request by an emergency organization. It is a figure which illustrates the function structure of MSC in the positional information acquisition apparatus which concerns on 2nd Embodiment. It is a figure which illustrates the function structure of GMLC in the positional information acquisition apparatus which concerns on 2nd Embodiment. It is a sequence diagram for demonstrating the processing operation | movement when a roaming in user talks. It is a sequence diagram for demonstrating the processing operation | movement at the time of the positional information acquisition request by an emergency organization. It is a figure which illustrates the hardware constitutions of MSC and GMLC.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Position information acquisition terminal, 2 ... Mobile communication terminal (roaming in user), 6 ... MSC, 7 ... GMLC, 63 ... Positioning processing part (position information acquisition means), 71 ... Signal reception analysis part (position information acquisition means, First position information acquisition means), 72... Storage section (storage means), 78 723 ... position information notification section (position information notification means), 621... Positioning processing section (first position information acquisition means, second Position information acquisition means), 722... Positioning request section (second position information acquisition means).

Claims (6)

A location information acquisition device that acquires location information of the roaming-in user in a roaming network where the roaming-in user is located,
Position information acquisition means for acquiring position information of the roaming in user when the roaming in user makes a call in the roaming network;
Storage means for storing the position information acquired by the position information acquisition means;
When receiving the location information acquisition request of the roaming-in user from an LCS client having an LCS function, the location information of the roaming-in user stored in the storage unit is read and the location information is notified to the LCS client Position information notification means;
Equipped with a,
When the location information acquisition unit fails to acquire the location information of the roaming in user, the dummy information is set as location information,
The location information notification means notifies the location information only when the location information acquisition request from the LCS client is during a call between the roaming-in user and the LCS client or within a predetermined time after the call is ended. A position information acquisition device characterized by the above. A location information acquisition device that acquires location information of the roaming-in user in a roaming network where the roaming-in user is located,
First location information acquisition means for acquiring identification information indicating a device that is located above the roaming in user and performs call processing when the roaming in user makes a call in the roaming network;
Storage means for storing the identification information acquired by the first position information acquisition means;
When receiving the roaming-in-user location information acquisition request from an LCS client having an LCS function, the identification information stored in the storage unit is read, and the roaming-in user location information is acquired from the device indicated by the identification information Second position information acquisition means;
Position information notifying means for notifying the LCS client of the position information acquired by the second position information acquiring means;
Equipped with a,
The second location information acquisition means sets dummy information as location information when location information of the roaming in user cannot be obtained,
The location information notification means notifies the location information only when the location information acquisition request from the LCS client is during a call between the roaming-in user and the LCS client or within a predetermined time after the call is ended. A position information acquisition device characterized by the above. The position information acquisition device according to claim 1 or 2 , wherein the position information acquisition unit or the first position information acquisition unit acquires the position information or the identification information when the roaming-in user transmits. . The said positional information acquisition means or a 1st positional information acquisition means acquires the said positional information or identification information at the time of the end of the said roaming in user, The any one of Claims 1-3 characterized by the above-mentioned. Position information acquisition device. A location information acquisition method for acquiring location information of the roaming-in user in a roaming network where the roaming-in user is located,
A location information acquisition step of acquiring location information of the roaming-in user when the roaming-in user makes a call in the roaming network;
A storage step for storing the position information acquired in the position information acquisition step;
A position to read out the location information of the roaming-in user stored in the storage processing step and notify the LCS client of the location information when receiving the location information acquisition request of the roaming-in user from an LCS client having an LCS function An information notification step;
Equipped with a,
If the location information acquisition step fails to acquire the location information of the roaming-in user, dummy information is set as location information,
The location information notification step notifies the location information only when the location information acquisition request from the LCS client is during a call between the roaming-in user and the LCS client or within a predetermined time after the call is ended. A position information acquisition method characterized by the above. In a roaming network where a roaming-in user is located, a location information acquisition system that acquires location information of the roaming-in user by an MSC that performs call processing of the roaming-in user and a GMLC that is an interface between the roaming network and the outside There,
The MSC comprises location information acquisition means for acquiring location information of the roaming in user when the roaming in user makes a call in the roaming network,
The GMLC stores the location information acquired by the location information acquisition unit, and stores the location information acquisition request of the roaming-in user from an LCS client having an LCS function. Reading out the location information of the roaming-in user, and notifying the LCS client of the location information ,
When the location information acquisition unit fails to acquire the location information of the roaming in user, the dummy information is set as location information,
The location information notification means notifies the location information only when the location information acquisition request from the LCS client is during a call between the roaming-in user and the LCS client or within a predetermined time after the call is ended. Position information acquisition system characterized by

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