KR100932257B1 - Emergency location service method and system - Google Patents

Abstract

The present invention relates to an emergency location service method and system, and more particularly, to a method and system for providing an emergency location service based on Secure User Plane Location (SUPL).

Emergency location service method using a SUPL-based location service system according to the present invention, receiving a location search request SMS message of the target terminal; And transmitting an SMS message including access information of the SLP to perform GPS-based location calculation of the target terminal to the target terminal in response to the received location search request SMS message. The request SMS message may include a parameter indicating an emergency location search request.

Location Services, Emergency Location Search, Secure User Plane Location (SUPL)

Description

   Emergency location service method and system {Method and System for Emergency Location Service}

The present invention relates to an emergency location service method and system, and more particularly, to a method and system for providing an emergency location service based on Secure User Plane Location (SUPL).

In the mobile communication field, a location based service (LBS) generally detects location information of a target terminal, which is a target of a location request, and provides the location information to an entity on a network that needs the location information. Means service. The location service provides a variety of additional services to the user, for example, traffic information services such as driving convenience information, public transit route search and setting, location information services such as location tracking, personal location information, lost terminal tracking, location based It is the basis for providing marketing / advertising services, weather information services, and emergency relief services.

The implementation form and operation procedure of the system for providing such a location service are different depending on the structure and characteristics of the network, but recently, efforts have been actively made to standardize the location service-related communication protocols and apply them universally to heterogeneous networks. ought. As an example, Secure User Plane Location (SUPL) may be mentioned.

SUPL is basically a communication protocol based on a user plane that can provide location services through a user plane. For example, SUPL uses user plane data bearers to transfer location assistance information such as Assisted-Global Positioning System (A-GPS) and to use a positioning technology related protocol between a mobile terminal and a network. Bearer).

Such a SUPL-based location service may be provided through a SUPL network including a SULP enabled terminal and a SLP (SUPL Location Platform) that support procedures defined in SUPL by interworking with the SUPL network through a user plane bearer. . The SLP is a network entity that manages SUPL services and determines the location of the target terminal. The SLP is an entity that calculates the actual location of the target terminal or, for example, plays a role of roaming and resource management.

On the other hand, in the location service based on the location of the mobile terminal, whether or not to promptly handle an emergency call in which the user urgently requests location information becomes an important factor in terms of the utility of the service. This is because, when the user is urgently requested for the current location due to distress or traffic accident, the user needs to quickly identify the location through an emergency call. However, when the emergency call is insufficiently processed, the utility of the service may be greatly reduced.

However, the current user plane-based communication protocol does not have a specific consideration for emergency calling, and does not provide a structure of the SUPL network for establishing an emergency call and a calling procedure in the corresponding structure. For example, according to the current SUPL location service processing procedure, when the emergency call is requested from the terminal, there is no definition of how to handle the request.

The present invention is to solve the problems of the prior art as described above, and to provide a location service method and system for efficiently providing an emergency location service using a SULP-based network.

Emergency location service method according to a first aspect of the present invention for achieving the above object, comprising: receiving a location search request SMS message of the target terminal; And transmitting an SMS message including access information of the SLP to perform GPS-based location calculation of the target terminal to the target terminal in response to the received location search request SMS message. The request SMS message may include a parameter indicating an emergency location search request.

In addition, the SUPL-based emergency location service system according to the second aspect of the present invention for achieving the above object, SLP for performing the GPS-based location calculation of the target terminal in response to the location search request SMS message of the target terminal ; And an SMSC for transmitting the SMS message including the access information of the SLP to the target terminal, wherein the location search request SMS message includes a parameter indicating an emergency location search request.

Here, the parameter may include emergency indication information indicating the priority of the emergency location search request or a separate field indicating whether or not the emergency location search request.

In addition, the access information of the SLP may include URL information and port information of the SLP.

The emergency location service system further includes an LBSP and an MPC. When the LBSP re-requests a location to the MPC, it is preferable that the MPC transmits the location result calculated by the SLP to the LBSP.

The emergency location service system may include a GMLC managing base station information of 2G and 3G networks, and when the SLP fails to calculate a GPS-based location, the GMLC may calculate the location of the target terminal based on a cell. have.

According to the present invention, it is possible to provide a specific processing procedure for the emergency location service that was not considered in the user plane-based communication protocol applicable to a general-purpose network.

1 is a diagram showing the configuration of a SUPL-based LBS system according to an embodiment of the present invention.

As shown in FIG. 1, the SUPL-based LBS system according to the present invention may be classified into a CDMA network (2G network) and a WCDMA network (3G network), and the mobile communication terminals 100 and 120 belonging to the respective networks. Provide location based services.

First, referring to the CDMA network, the user equipment (UE) 100 is wirelessly connected to the mobile communication network through a base transceiver system (BTS) 101 and a base station controller (BSC) 102. The BSC 102 is connected with a Mobile Switching Center (MSC) 104. The BTS 101 performs a wireless connection with the UE 100 and a wired / wireless connection function between the UE 100 and the BSC 102, and the BSC 102 is located between the BTS 101 and the MSC 104 to manage a base station. And control.

The MSC 104 is to provide mobile communication services to mobile communication subscribers, and performs functions such as circuit switching between subscribers, incoming and outgoing relay processing, handoff, and roaming, and manages a VLR (Visitor Location Register) database.

Meanwhile, a Packet Data Serving Node / Inter-Working Function (PDSN / IWF) 103 that provides packet data service to the UE 100 is connected to the BTS 102 to provide a Point-to-Point Protocol (PPP) session for the subscriber. Follow the setup, maintenance and shutdown process.

In the CDMA network, the PDSN / IWF 103 is connected to a Position Determination Entity (PDE) 105, and the PDE 105 has a function of receiving a GPS signal and performs position calculation of a mobile communication terminal belonging to a CDMA network. The GPS-based location information of the calculated 2G network is provided to the mobile positioning center (MPC) 109.

The MPC 109 may request location information of a specific mobile communication terminal from the PDE 105, receive and cache location information of the terminal calculated by the PDE 105, and receive location-based services. Manage the terminal's authentication, user profile, and more.

In addition, the MPC 109 may receive not only GPS-based location information, but also base station information in a 2G / 3G network from a gateway mobile location center (GMLC) 108, wherein the GMLC 108 may be used. The MS is connected to the MSC 104 and the HLR (Home Location Register) 107 in the 2G network, and transmits base station information of the 2G network to the MPC 109. The GMLC 108 according to the present invention is connected to the MSC 124 in the 3G network as well as the base station information of the 2G network, as described above, DGMLC (DGMLC) capable of transferring the base station information of the 3G network to the MPC 109 Is preferable.

On the other hand, the subscriber accesses the service server (Service Server) 111 and requests the location information of the person or another person, the service server 111, if there is a request for the location information of the subscriber, this is based on Location Based Service Platform (LBSP) The service platform 110 transmits the location information, and the LBSP 110 requests the location information from the MPC 109, receives the location information provided by the MPC 109, and provides the location information to the subscriber. Here, the LBSP 110 may be referred to as a receiving unit in that the location tracking service is started by receiving a subscriber's location request.

Next, referring to the WCDMA network (3G network), the mobile communication terminal 120 belonging to the WCDMA network is connected to the radio base stations (Node B, 121), RNC (Radio Network Controller, radio network controller, 122) is a Node Processes the control signal transmitted from the B (121), and controls the radio connection, handover and the like. As in the CDMA network, in the WCDMA network, the RNC 122 includes a mobile communication exchange MSC / VLR that manages a VLR database; 124, the MSC / VLR 124 handles circuit traffic.

In the WCDMA network, packet data traffic is processed by a serving GPRS support node / gateway GPRS support node 123 (SSGN / GGSN) connected to the RNC 122.

On the other hand, in the CDMA network, the PDE 105 performs GPS-based position calculation, but the WCDMA-SLP 112 serving as a positioning server (PS) is responsible for GPS-based position calculation in the WCDMA network according to the present invention. Done. The SLP 112 includes a location service (LCS) client and an LCS manager, performs a procedure of establishing a session with a target terminal that is a target of a location request, and calculates latitude and longitude information (location information) of the target terminal. Follow the procedure.

As shown in FIG. 1, the SLP 112 according to the present invention includes a Global Positioning Management System (GPMS) 113, a LBS Location Based Service Operation & Management (LMS O & M), 115. ) And one or more WARNs (117, 118) to calculate GPS-based location information of the mobile communication terminal in the 3G network and provide it to the MPC (109). Here, the GPMS 113 is connected to the OSS Master Database 114 and the LBS O & M 115 is connected to the LBS O & M database server 116 so that the SLP 112 can calculate the location information. To provide.

Here, WARN is to provide satellite information around the mobile communication terminal, but was conventionally provided only in the CDMA network, WARN according to the present invention has a WCDMA PDE in addition to the PDE of the CDMA, so that the GPS-based location information in the WCDMA network Reference information for calculating may be provided.

2 schematically illustrates a service for providing location information of another person belonging to a WCDMA network through a SULP-based location positioning system according to the present invention.

First, when a subscriber requests a location search of a target terminal (another terminal) through an application program installed in a mobile communication terminal, a location search request message is transmitted to the LBSP 110 via a service server (step S20), and the LBSP ( When the target terminal to be tracked is authenticated, 110 requests the MPC 109 for location information of the target terminal (step S21). During authentication, the authentication may be performed through a mobile directory number (MDN) of the target terminal. If the authentication is successful, the international mobile subscriber identity (IMSI) and model information of the target terminal are transmitted to the MPC 109.

Since the GMLC 108 according to the present invention has 2G and 3G base station information, the MPC 109 requests the subscriber's network information from the GMLC 108 and obtains network information from the GMLC 108 (step S22). ).

If the subscriber is in the 3G network, the MPC 109 requests location information from the SLP 112 (step S23). At this time, the SLP 112 informs the MPC 109 that it is ready to establish a session with the target terminal. When the session preparation is completed, the SLP 112 sends the access information including the URL and port information of the SLP to the MPC 109. It can consist of sending to.

Thereafter, in step S24, the SLP 112 requests the MP 106 to send the short message SMS to the target terminal (step S24), and the MP 106 sends the short message SMS to the target terminal. Transmit (step S25). Here, the MP 106 is preferably a Short Message Service Center (SMSC). When the location search request message is an emergency location search request message, an emergency request is sent to the short message transmitted from the SLP 112 to the SMSC, as will be described later. It may include a parameter indicating that the message.

When the normal response message is received from the target terminal, the SLP 112 and the target terminal are interconnected, in which case the SLP 112 calculates the position of the target terminal (step S26), and the calculated position information result is It is delivered to the MPC 109 and the LBSP 110 (step S27 and step S28). At this time, the terminal requesting the location information (location request terminal) re-requests the location information to the service server, and after the LBS system authenticates the re-request, the calculated location result is sent to the terminal requesting the location information. Transmit (step S29).

In the case of transmitting the location result as described above, the GISP connected to the LBSP 110 corresponds to the calculated location result when there is a request for map information from the LBSP 110. It may also perform a function of providing map information.

As described above, according to the present invention, the GMLC 108 including the base station information and the SLP 112 for performing position location by mutually connecting to the terminal belonging to the 3G network through the SLP information (SLP URL and port information) Since the location information is provided by using a), GPS-based location information can be provided in a WCDMA network.

On the other hand, according to another embodiment of the present invention, if the target terminal is located underground or inside the building, since GPS-based location tracking may not be possible, the SLP 112 does not establish a session with the target terminal or GPS If it is impossible to calculate the location information, ie latitude and longitude information of the target terminal based on, as described above, the process of calculating the cell-based location information by the GMLC 108 having the base station information in the 2G and 3G network You can also do

As described above, according to the present invention, since the GPS-based location calculation in 2G and 3G networks as well as the GMLC that manages the base station information in the 2G and 3G networks can be provided to calculate the location based on the cell, the targets are variously targeted. Location information about the terminal may be provided.

In the present invention, a process of providing location information of a mobile communication terminal may be variously applied. Hereinafter, the process of providing location information according to the present invention will be described in detail with reference to various flowcharts.

3 is a view showing in detail a flow for requesting location information of another person according to an embodiment of the present invention, a terminal for requesting a location for convenience of description, a location request terminal, a terminal that is a target of location tracking; Defined as the target terminal.

Referring to FIG. 3, when the location request terminal requests a location service request page for a target terminal (that is, another terminal) by inputting a phone number of another person to the service server 111 (step S301), the service server ( 111 requests the LBSP 110 for the location of the other's telephone number (step S302).

The LBSP 110 requests authentication of a terminal that has requested location information from an authentication gateway (for example, Juice G / W of KTF) (step S303), and receives a response to the authentication result from the authentication gateway (step S304). ). If the authentication is successful, the authentication response may include terminal model information for determining whether the terminal is the IMSI and the GPS terminal of the terminal requesting the location information for terminal authentication. The LBSP 110 sends a location information request including the MDN, IMSI, and terminal model information to the MPC 109 (step S305).

When there is a location information request from the LBSP 110, the MPC 109 requests the network information of the target terminal to the GMLC 108, and receives response information thereto (step S306). In this case, the MPC 109 receives information on whether the corresponding terminal is in the 2G network or the 3G network from the GMLC 108, and if the target terminal is in the 3G network, the positioning server (PS) of SUPL, that is, The SLP 112 requests location information (step S307). The location information request includes an IMSI, etc. so that the SLP 112 may perform an authentication process of the target terminal.

Thereafter, the SLP 112 requests the MP / SMSC 106 to transmit the short message SMS to the target terminal (step S308), and the MP / SMSC 106 sends the short message to the target terminal (step S309). ), And receives a response to the transmission result from the target terminal. The short message for providing a location-based service according to the present invention may include location service (LCS) initialization information, and may include a parameter indicating an emergency location search request message, as will be described later.

If a normal response message is received from the target terminal (step S310), the SLP 112 sends the MPC SLP information including IMSI, SLP's own URL information and port information, etc., to indicate that it is ready to establish a session with the target terminal. And the MPC 109 transmits the corresponding SLP information to the service server 111 (step S312). At this time, the service server 111 transmits the received SLP information and the refresh page to the location request terminal (step S317).

After the normal response message is received from the target terminal and the interconnection between the SLP 112 and the target terminal is made, the SLP 112 operates the GPS module by driving the GPS meta tag on the target terminal, thereby allowing the SLP 112 to perform location information on the target terminal. Can be calculated (step S313). If there is a location re-request from the LBSP 110 (step S314), the SLP 112 transmits the location result calculated as described above and IMSI of the target terminal to the MPC 109 (step S315), and the MPC 109 ) Transmits the location result to the LBSP 110 (step S316).

On the other hand, when the mobile communication terminal receiving the refresh page in step S317 re-requests the page for the location result to the service server 111 (step S318), the service server 111 to the corresponding target terminal to the LBSP 110 Re-request the position of (step S319). Here, the page re-request of the mobile communication terminal may be made using predetermined reserved ID information included in the refresh page received from the service server 111.

When there is a location re-request from the service server 111, the LBSP 110 requests authentication of the re-request from the authentication gateway (Juice G / W) (step S320), and receives response information thereto (step S320). S321). In this case, the authentication gateway may perform authentication using the reserved ID information described above.

On the other hand, according to a preferred embodiment of the present invention, if the authentication is successful in the above, the LBSP 110 requests the map information corresponding to the position result calculated by the SLP 112 to the GISP (step S322), Receive map information provided by the GISP (step 323). Here, the map information may be geocoding or map information.

The LBSP 110 transmits the calculated location result and the map information to the service server 111 (step S324), and the service server 111 generates the location result and the map information as a page in which the subscriber can check the form. To transmit the location information to the requesting terminal (step S325).

FIG. 4 is a diagram illustrating in detail an SMS transmission call flow between an SLP and an MP / SMSC at the time of an emergency location measurement request among others' location information request services according to the embodiment shown in FIG. 3.

Referring to FIG. 4, when an emergency location service request is made, the SLP 112 delivers a Submit Invoke message to the MP, that is, the SMSC 106 (step S41). Conventionally, as a parameter of a Submit Invoke message, for example, only a parameter indicating that the LBS service is transmitted, such as PID = 0x51, is transmitted. However, the SLP according to the present invention is urgent together with the parameter indicating the LBS service as described above when requesting an emergency location measurement. Send a Submit Invoke message with more parameters to indicate that the message is related to location search. The SMS server, having received the Submit Invoke message, responds to the SLP with the result of the submit result (ack / error) message (step S42). The SMS server then provides its own reference number and the reference number of the SLP sent in Submit invoke to send a status report invoke message to the SLP for querying the status of the SLP (step S43), and the SLP as a result to the SMS server. Status report result (ack / error) is returned (step S44).

In this case, the parameter inserted in the Submit Invoke message can be inserted in various forms depending on whether the Submit Invoke message is related to the emergency location search or not. For example, as shown in Table 1 below, the Submit Invoke message according to a preferred embodiment of the present invention is an emergency indicator information (Urgency Indicator) which is a parameter indicating an emergency location search request in addition to general parameters indicating a source address, a reception address, and the like. In this case, the above-mentioned emergency indication information (Urgency Indicator) may be set to indicate a differential priority as shown in Table 2 below. The emergency indication information as a parameter indicating the emergency location search preferentially performs the SMS function when the SMS server receives a high priority message when the low priority parameter is included.

Parameter Name Length (byte) Data type Destination Address 24 SME Address Originating Address 14 SME Address SM 268 SMS Text SME reference number 4 Integer Reference Type One Integer Status report indicator One Integer Manual acknowledge request One Integer Charge indicator One Integer Validity time 8 Validity time Urgency indicator One Integer Privacy indicator One Integer Validity indicator One Integer Service type One Integer Message updating indicator One Integer

Name Value Description EMERGENCY 6 Emergency (highest priority) VERY_URGENT 5 Higher priority URGENT 4 High priority INTERACTIVE 3 Interactive service (normal priority) NORMAL 2 Normal priority (default) BULK One Low priority

In addition, the parameter indicating the emergency location search request may be inserted in the form of an additional field, in which case the additional field inserts an active value (such as Active or 1 or True), and In this case, by inserting a non-active value (such as Non-active or 0 or False), it is possible to distinguish whether the corresponding Submit Invoke message is related to an emergency location search or a general location search service request.

5 is a diagram illustrating a current position providing flow of another person using a swap browser according to an embodiment of the present invention.

Brew (Binary Runtime Environment for Wireless) is a mobile terminal that functions like an operating system on a personal computer. Subscribers can use the Brew-equipped terminal to download their desired data over the network or as needed. The subscriber's mobile terminal software can be upgraded wirelessly.

Hereinafter, a mobile communication terminal equipped with a brew application will be described as an example, but is not limited thereto. Those skilled in the art will understand that a mobile communication terminal equipped with various wireless Internet applications may be applied to the present invention.

FIG. 5 illustrates a process of requesting location information of a user terminal using a WAP browser, for example, a KUN-browser (KTF Unified Navigator) in a mobile communication terminal. Referring to FIG. As described above, the brew application connects to the service server 111 for the location information request using the TCP / IP layer (step S501), and the service server 111 transmits the telephone number (MDN) of another person to the LBSP 110. Request a location (step S502).

As such, when the location request terminal requests a location for another person, as in FIG. 3, the authentication process at the authentication gateway and the process of determining whether the target terminal is in the 2G network or the 3G network in the GMLC 108 are performed in the same manner. (Steps S503 to S507) Detailed description thereof will be omitted.

When the target terminal is in the 3G network, the MPC 109 requests location information from the SLP 112. In the emergency location tracking for another terminal, the SLP 112 is the MP 106 as described above. Request to send a short message (SMS) including a parameter indicating a location search request to the target terminal (step S508), and the MP 106 sends the short message to the target terminal (step S509), and the transmission result from the target terminal. Receive a response to

If the transmission of the short message is successful, the SLP 112 transmits the SLP information including the SLP URL and the port information to the MPC 109 (step S510), whereby the SLP 112 and the target terminal are interconnected. The SLP 112 calculates location information of the target terminal (step 512).

The SLP 112 then transmits the calculated position result to the MPC 109 (step S513), and the MPC 109 transmits the position result to the LBSP 110 (step S514).

The location result is transmitted to the terminal requesting location information, and together with the location result, the LBSP 110 requests and receives the map information from the GISP (steps S515 and S516) and transmits the location information to the service server 111 (step S517), the service server 111 transmits it to the location request terminal (step S518).

6 is a diagram illustrating a current location providing flow of a person or another person using a wire according to a preferred embodiment of the present invention. The process illustrated in FIG. Only the difference in the request is omitted, and detailed description thereof will be omitted since the remaining processes (steps S601 to S618) are the same.

Although preferred embodiments of the present invention have been described in detail above, this is only for explaining the embodiments of the present invention, and it is obvious that various modifications can be made by those skilled in the art. After all, the scope of the present invention will be defined by the claims that follow.

1 is a diagram showing the configuration of a SUPL-based LBS system according to an embodiment of the present invention.

2 schematically illustrates a service for providing location information of another person belonging to a WCDMA network through a SULP-based location positioning system according to the present invention.

3 is a diagram illustrating in detail a flow of requesting location information of another person according to an exemplary embodiment of the present invention.

FIG. 4 is a diagram illustrating in detail an SMS transmission call flow between an SLP and an MP / SMSC at the time of an emergency location measurement request among others' location information request services according to the embodiment shown in FIG. 3.

5 is a diagram illustrating a current position providing flow of another person using a swap browser according to an embodiment of the present invention.

6 is a diagram illustrating a current location providing flow of a person or another person using a wire according to an embodiment of the present invention.

Claims (12)

In the emergency location service method using a location service system based on SUPL, Receiving, by the SMSC, the location retrieval request SMS message of the target terminal from the SLP; And And sending, by the SMSC, the SMS message including the access information of the SLP to perform GPS-based location calculation of the target terminal in response to the received location search request SMS message, to the target terminal. The location search request SMS message includes a parameter indicating an emergency location search request. The method of claim 1, And the parameter includes emergency indication information indicating a priority of the emergency location search request. The method of claim 1, And the parameter comprises a separate field indicating whether or not the emergency location search request. The method of claim 1, Access information of the SLP emergency location service method comprising the URL information and port information of the SLP. The method of claim 1, The SUPL-based location service system further includes LBSP and MPC, And when the LBSP re-requests a location to the MPC, the MPC transmitting the location result calculated by the SLP to the LBSP. The method of claim 1, The SUPL-based location service system includes a GMLC that manages base station information of 2G and 3G networks, And calculating the location of the target terminal on a cell basis in the GMLC when the SLP fails to calculate a GPS-based location. An SLP for performing GPS-based location calculation of the target terminal in response to a location search request SMS message of the target terminal; And An SMSC including an SMS message including access information of the SLP to the target terminal; SUPL-based emergency location service system, characterized in that the location search request SMS message includes a parameter indicating an emergency location search request. The method of claim 7, wherein The parameter may include emergency indication information indicating the priority of the emergency location search request. The method of claim 7, wherein The parameter is a SUPL-based emergency location service system, characterized in that it comprises a separate field indicating whether or not the emergency location search request. The method of claim 7, wherein SUPL-based emergency location service system, characterized in that the access information of the SLP includes URL information and port information of the SLP. The method of claim 7, wherein Further includes LBSP and MPC, SUL-based emergency location service system, characterized in that when the LBSP re-requests the location to the MPC, the MPC transmits the location results calculated by the SLP to the LBSP. The method of claim 7, wherein Including GMLC for managing base station information of 2G and 3G network, SULC-based emergency location service system, characterized in that for calculating the location of the target terminal on a cell basis in the GMLC when the SLP fails to calculate the GPS-based location.

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