JP4703721B2 - Location information service providing method in mobile communication system - Google Patents

Abstract

In a method for providing a location information service based upon a user's location, when a user is currently located within a preferred location or preferred area set by the user to apply privacy with respect to a transmission of location information thereto, a procedure for requesting the user's authorization is performed before transmitting the user's location information, namely, a locationserver checks a location information request for the user located within the preferred location or preferred area according to a privacy profile within the corresponding location or area and performsa user notification and verification process according to the privacy profile, to thereafter determine whether to forward the location information according to the result of the verification.

Description

  The present invention relates to a location information service based on a user's location in a wireless communication system, and more particularly, to a method for providing a location information service using a user's privacy check based on a user's location.

  In general, in order to provide a location information service to a user, a unit for calculating the location of the terminal is provided in the mobile communication network, so that the location of the terminal is set to a predetermined entity periodically or according to a user's request. Providing location service to be transmitted.

  The network structure associated with the location service varies depending on internal network structures such as 3GPP, 3GPP2, and OMA (Open Mobile Alliance), and the method of calculating the location of the current terminal is to transmit the ID of the cell in which the terminal is located. A method using cell ID technology, a method of calculating the position of the terminal using triangulation after measuring the time for a signal to reach each adjacent base station from the terminal, using GPS (Global Positioning System) There are ways to do it.

  The location information service also includes a method for protecting privacy regarding location information from a specific client.

  FIG. 1 is a signal flowchart showing a general privacy protection method, and uses a privacy checking protocol (PCP).

  The specific application 10 transmits a position information request message to the position server 20 in order to acquire the position information related to the specific user (S11), and the position server 20 checks the privacy related to the position information of the user. A privacy request message is transmitted to (Privacy Checking Entity) 30 (S13).

  The PCE 30 that has received the privacy request message from the location server 20 checks privacy information related to the location information of the user and information related to the operation of the location server 20 (S15). When the operation information of the location server 20 related to privacy is transmitted to the location server 20 by a privacy response message (S17), the location server 20 that has received the privacy response message from the PCE 30 sends the location information of the user to the location information response. The message is transmitted to the application 20 (S19).

  The privacy profiles defined in the conventional PPR are roughly divided into five.

  1) Location tracking is not allowed.

  2) Location tracking is permitted without notifying the user.

  3) The user is notified and position tracking is permitted.

  4) User notification and verification is required for location tracking. Here, location tracking is allowed only when approved by the user or when there is no response to the notification.

  5) User notification and verification are required for location tracking. Here, location tracking is allowed only if approved by the user.

  The conventional location information system does not provide various privacy authentication (management) services based on the location of the user and the set conditions. In particular, the conventional location information system does not have a privacy profile considering the user location information. In other words, conventional location information systems do not provide any method for user consent and verification based on the location of the target user.

  One aspect of the present invention includes our recognition of the conventional problems as described above. Based on this recognition, the present invention provides an improved location information service using a user privacy check based on the location of the user.

  In order to prevent the features of the present invention from becoming unknown, some attributes of the location information service method and system will not be described in detail. However, those skilled in the art will appreciate that additional attributes are also part of the location service method and system of the present invention.

  The object of the present invention is a position based on the position of the user, which allows the user to set privacy for various positions or regions, apply the privacy according to the current position of the user and have different privacy at different positions. It is to provide an information service providing method.

  Another object of the present invention is to make it possible for the user to determine whether or not to report position information in a favorite area set by the user by performing a position tracking notification and verification procedure. It is an object of the present invention to provide a location information service providing method based on the location of a user, which can further protect privacy based on the location.

  In order to achieve such an object, in a system for transmitting location information of a specific user requested by an LRE (Location Requesting Entity) (for example, an external client, a SUPL agent of a SUPL network, etc.), the location information according to the present invention is used. The service providing method includes a process of confirming whether a user is currently located in a favorite position or a favorite area set by the user, and the user is in the favorite position or favorite area. If it is currently located, a process of confirming privacy information related to the preferred location or location information in the preferred area, and determining whether to report the user location information to the LRE according to the privacy information. Process.

  According to the first exemplary embodiment of the present invention, in the network system in which the user sets one or more favorite locations or favorite regions and the respective privacy, the location information service providing method includes: The location server that received the message (eg, 3GPP GMLC (Gateway Mobile Location Center), SUPL network SLP (SUPL Location Platform), etc.) performs location tracking for the user, and the user's set preferences A process of confirming whether the user is currently located in the location of the user or the preferred area, a process of confirming privacy based on location information in the preferred location or the preferred area, and confirming the privacy, The location information A process of requesting to perform a notification procedure for notifying transmission of information, and a process of receiving a response to the request and determining whether to report the user's location information according to the received response. Is done.

  According to the second embodiment of the present invention, a system in which an external client requests location information about a user who has moved from an H-GMLC (Home-Gateway Mobile Location Center) to a V-GMLC (Visit-GMLC) based on a 3GPP entity In the location information service providing method, the H-GMLC that has received the location information request confirms the privacy related to the location tracking of the user, the H-GMLC confirms the address information of the V-GMLC, The V-GMLC acquires position information according to the user's position tracking procedure, transmits the position information to the H-GMLC, and the H-GMLC receives position information based on the current position information of the user. The process of checking privacy and location A process of transmitting a notification request message from the H-GML to the V-GMLC and a process of performing a location information notification procedure between the V-GMLC and the user when confirmation of the user is required for the information The V-GMLC receives a verification response message including the notification result, transmits the received verification response message to the H-GMLC, and the H-GMLC that has received the verification message receives the result. And reporting the location information of the user to the client based on

  According to a third embodiment of the present invention, in the method for providing location information regarding a user in a circuit service (CS) domain in which privacy for location information is set in a 3GPP entity, the location information service providing method includes: A process in which a GMLC that has received a location information request from a specific client of a 3GPP network tracks the location of the user to calculate the location information, and a user notification and verification whether the GMLC transmits the location information A process for transmitting a notification message for requesting, a process for transmitting a location information notification message to the user from a VMSC / MSC (Mobile Services Switching Center) server that has received the notification message, and a user verification request The VMSC / MSC server receiving a verification message including a verification result from the user, the GMLC receiving a notification response message including the notification and the verification result from the VMSC / MSC server, and The GMLC is configured to report the location information of the user to the client.

  According to a fourth embodiment of the present invention, in the method for providing location information about a user in a packet service domain in which privacy for location information is set in a 3GPP entity, the location information service providing method is a specific client of a 3GPP network. The GMLC that has received the location information request from the user performs the location tracking of the user and calculates the location information, and a notification message for requesting user notification and verification as to whether or not the GMLC transmits the location information. A process of transmitting, a process of SGSN (Serving GPRS Supported Node) receiving the notification message performing a security procedure with the user, a process of transmitting a location information notification message to the user by the SGSN, When validation is requested The SGSN receives a verification message including a verification result from the user, the GMLC receives a notification response message including the notification and the verification result from the SGSN, and the GMLC receives the user location information. Is transmitted to the client.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will clearly understand that various changes and modifications can be made within the spirit or scope of the present invention. Accordingly, changes and modifications within the scope of the claims of the present invention and equivalents thereof are included in the scope of the claims of the present invention.

  The present invention further defines a privacy profile based on a user's location information, and seeks the consent of the user before reporting the location information within a preferred location or preferred region set by the user. Do the procedure.

  In general, in a user location information service to which the privacy profile is added, a network service provider must always acquire location information, and the user can use PPR (Privacy Profile Register), PEL (Privacy Exclusion List), The privacy profile can be changed by setting PCE (Privacy Checking Entity) or the like. It is also generally possible to reject location tracking attempts under default conditions. The default processing applied when there is no response from the target user or user equipment (UE) is specified in the target UE subscription profile. Therefore, in the case of some location services, the location tracking request may be accepted by the default processing, and in the case of other location services, the location tracking attempt may be rejected by the default processing.

  The home network must be capable of defining a default environment that can provide location information of the target UE when required by various agencies and / or network requirements.

  The privacy check must be performed in the target UE subscriber's home environment. This allows the operator to report the subscriber's privacy. That is, the privacy setting used for the privacy check is constantly updated as described in the home environment of the target UE subscriber.

  The privacy check can take into account home environment specific information such as time of day and subscriber location. Also, it is guaranteed that the privacy check is performed based on the latest information so that it can be used in the home environment.

  Also, the target UE subscriber can restrict access to location information (permanently or for each attempt). If not listed in the target UE subscription profile, LCS client access is restricted. In addition, when there is no specific permission for the location tracking of the target UE, the location tracking for the target UE cannot be performed.

  In general, specific area, national, and regional privacy regulations must follow a location information service to which a privacy profile has been added, and multiple layers of permissions are required for the location information service. For example, certain privacy exceptions may exist due to delegated location-based services (eg, emergency services or lawful intercepts) required by national or local regulatory requirements.

  Sometimes the operator needs to determine the location of the target UE (eg for legitimate eavesdropping or emergency calls). For emergency services (as required by local regulatory requirements), the target UE (or ME) that makes an emergency call can be tracked regardless of the subscriber privacy profile value for the target UE.

  Preferably, the target UE user is not notified of any location tracking attempts. Except where required by local regulatory requirements or disabled by the target UE user, the target UE can only be tracked if allowed by the UE Subscription Profile.

  In the case of a Public-Land-Mobile-Network (PLMN) operator service, the target UE subscriber can restrict access to location information used to improve or support a particular type of service. If not listed in the target UE subscription profile, LCS client access is restricted. The target UE user is not notified of any authorized location tracking attempts. Also, in the case of a legitimate intercept service (as required by local regulatory requirements), the location of the target UE can be tracked in all environments required by local regulatory requirements.

  Accordingly, all location requests (LRs) are made with a privacy check except in the following cases. 1) LR associated with lawful intercept, 2) LR associated with emergency call, 3) LR from serving network associated with anonymous tracking for statistical and O & M purposes, 4) Home network operator depending on its internal purpose LR from the requesting home network.

  The home network operator cannot use the UE location information obtained from the visited network without a privacy check for value-added services or to transmit such location information to a third party.

  Here, as an example of the present invention, not only five privacy profiles defined in the above-described conventional PPR (Privacy Profile Register) compliant with 3GPP but also user notification and verification are performed according to the current location of the user. Therefore, eight profiles (6 to 13) are added. Here, the added eight profiles are used when different privacy is set depending on the current position of the user.

  Hereinafter, as one embodiment of the present invention, 13 privacy profiles defined in PPR conforming to 3GPP will be described.

  1) Location tracking is not allowed.

  2) Location tracking is permitted without notifying the user.

  3) The user is notified and position tracking is permitted.

  4) User notification and verification is required for location tracking. Here, location tracking is allowed only when approved by the user or when there is no response to the notification.

  5) User notification and verification are required for location tracking. Here, location tracking is allowed only when approved by the user.

  6) User notification and verification based on the user's current location is required for location information reporting. Here, the position tracking is performed without notifying the user, and the position information report is performed when it is approved by the user or when a response to the notification is not received.

  7) User notification and verification based on the user's current location is required for location information reporting. Here, the position tracking is performed without notifying the user, and the position information report is performed only when approved by the user.

  8) User notification and verification based on the user's current location is required for location information reporting. Here, the position tracking is performed after notifying the user, and the position information report is performed when it is approved by the user or when a response to the notification is not received.

  9) User notification and verification based on the current location of the user is required for the location information report. Here, the position tracking is performed after notifying the user, and the position information report is performed only when approved by the user.

  10) User notification and verification based on the user's current location is required for location information reporting. Here, the position tracking is performed after the user notification and the verification process are performed, and is also performed when the user approves or the response to the notification is not received. Further, the location information report is performed only when it is approved by the user.

  11) User notification and verification based on the user's current location is required for location information reporting. Here, the position tracking is performed after the user notification and the verification process are performed, and is also performed when the user approves or the response to the notification is not received. The location information report is also performed when the user approves or does not receive a response to the notification as in the location tracking.

  12) User notification and verification based on the user's current location is required for location information reporting. Here, the location tracking is performed after the user notification and verification process only when approved by the user. The position information report is also performed when the user approves or the response to the notification is not received.

  13) User notification and verification based on the user's current location is required for location information reporting. Here, the position tracking is performed after the user notification and the verification process are performed, but is performed only when approved by the user. The position information report is also performed when the user approves, such as the position tracking.

  Here, the attributes added to the privacy of the present invention are the profiles 6) to 13). In order to obtain the user's consent before reporting the location information in the preferred location or the preferred area preset by the user, it is based on the location value calculated after the location tracking for the corresponding user. Further steps are required to obtain user consent. A location information service providing method according to the present invention will be briefly described.

  First, one of the privacy profiles related to the user location information is whether the specific user transmits the user location information to a third user or another network entity in one or more locations or areas. Set using. Here, the location or area where the user has set the privacy profile related to the location information is set as an area preferred by one user. That is, the user can set one or more user favorite areas and the privacy profile of each favorite area while moving.

  The privacy profile in the preferred area set by the user, that is, information on whether to transmit the user's location information and whether to request the user's consent procedure is stored in the PPR or a separate storage unit. Saved.

  When location information related to the user is requested from a third user or network entity, the specific user connects to the PPR and confirms a privacy profile related to location information set by the user.

  If the privacy profile is associated with a notification and verification request based on the user's current location, the specific user requests whether to transmit the user's location information and the user's consent procedure Confirm information about whether or not to do so. Thereafter, the specific user determines whether or not to transmit position information of the corresponding user. A subsequent procedure for requesting location information from the third user or other network entity is then performed.

  FIG. 2 is a signal flowchart illustrating an embodiment of a location information service providing method according to the present invention, which is an MT-LR (Mobile Terminating Location Request) procedure in a packet service (PS) domain and a circuit service (CS) domain.

  The network where the location information service is realized includes an LCS client 41, GMLCs 43, 45, 49, an HLR (Home Location Register) / HSS (Home Subscriber Server) 47, and an MSC (Mobile services Switching Center) / SGSN (PRG) A supported node 51, a RAN (Radio Access Network) 53, and a target user (for example, a target UE) 55 whose location information is requested.

  The GMLC includes a network requesting request for location information (GMLC) 43 (hereinafter referred to as R-GMLC) and a home GMLC (hereinafter referred to as H-GMLC) which is a GMLC of a user's home network. ) 45 and Visited-GMLC (hereinafter referred to as V-GMLC) 49, which is a GMLC to which the user has moved when the user has moved to the third network.

  In the present invention, it is assumed that the target user 55 whose location information is requested by the LCS client 41 has moved to the third network. Hereinafter, the target user 55 is abbreviated as “user”.

  An external location service client (hereinafter referred to as an LCS client) 41 transmits a location information request message (for example, LCS Service Request) to the R-GMLC 43 in order to request location information of the specific target user 55. (S21).

  The R-GMLC 43 that has received the location information request message checks the ID of the LCS client 41 to verify whether it is a valid client. Further, the R-GMLC 43 confirms whether or not the privacy profile of the user 55 is stored in the R-GMLC 43. Here, when the privacy profile is stored in the R-GMLC 43, since the R-GMLC 43 is the H-GMLC 45 of the user 55, a series of steps for acquiring the address of the H-GMLC 45 (S22). , S23) and the message exchange process (S24, S37) between the R-GMLC 43 and the H-GMLC 45 can be omitted. Further, when the R-GMLC 43 recognizes the address of the H-GMLC 45, a series of steps (S22, S23) for obtaining the address of the H-GMLC 45 can be omitted.

  If the R-GMLC 43 is not an H-GMLC 45 and does not know the address of the H-GMLC 45, the R-GMLC 43 may request the H-GMLC 45 address from the user's home network HLR / A routing information request message (Send Routing Info For LCS) is transmitted to the HSS 47 (S22). The HLR / HSS 47 confirms whether the R-GMLC 43 has the authority to request the location information of the user 55, and then sends the address of the H-GMLC 45 to a routing information request confirmation message (for example, Send). It is transmitted to the R-GMLC 43 by Routing Info For LCS ack (S23).

  The R-GMLC 43 that has received the routing information request confirmation message transmits a location information request message (for example, LCS Service Request) related to the user 55 to the H-GMLC 45 (S24), and the H-GMLC 45 receives PPR ( A privacy setting relating to the location information of the user 55 is confirmed (S25). Here, in the process of confirming the privacy setting, the H-GMLC 45 confirms the possibility of position tracking.

When the location tracking for the user 55 is possible, the H-GMLC 45 sends a routing information request message (for example, to the HLR / HSS 47 to confirm the address of the V-GMLC 49 and the SGSN and / or the VMSC / MSC 51). Send Routing Info LCS) is received (S26), and the SGSN and / or VMSC / MSC 51 and V-GMLC 49 addresses regarding the user 55 are received from the HLR / HSS 47 by a routing information request confirmation message (S27).
The H-GMLC 45 confirms the address of the V-GMLC 49 included in the routing information request confirmation message and transmits a location information request message to the corresponding V-GMLC 49 (S28). The V-GMLC 49 that has received the location information request message performs an MT-LR procedure with the corresponding user 55 to track the location of the user 55 (S29). The MT-LR procedure will be described later in detail.

  The V-GMLC 49 transmits the location information of the user 55 calculated by the MT-LR procedure to the H-GMLC 45 using a location information response message (for example, LCS Service Response) (S30). The H-GMLC 45 that has received the location information response message confirms the privacy setting of the corresponding user 55 in order to determine whether the location information of the corresponding user 55 corresponds to the preferred area set in privacy. (S31).

  In the process of confirming the privacy setting (S25, S31), when it is confirmed that the privacy profile is added by the present invention, that is, the privacy profile is notified and verified based on the current location of the user. When the profile is for requesting, the H-GMLC 45 performs a series of steps (S32 to S36) for verifying whether or not to report the location information of the user 55 to the LCS client 51.

  When the privacy profile of the user 55 is a profile that requires notification and verification at a specific location or area, and the current location or area of the user is a favorite area that needs to be notified and verified, the H-GMLC 45 Sends a routing information request message (eg, Send Routing Info For LCS) to the HLR / HSS 47 to request the addresses of the V-GMLC 49 and SGSN and / or VMSC / MSC 51 (S32), and sends a routing information request confirmation message (S32). For example, the address information is received from the HLR / HSS 47 by Send Routing Info For LCS ack) (S33). Here, the process of checking the addresses of the SGSN and / or the VMSC / MSC 51 and the V-GMLC 49 (S32, S33) is selectively performed when the H-GMLC 45 recognizes the address information.

  The H-GMLC 45 transmits a notification request message for requesting user notification and verification to the V-GMLC 49 of the network to which the user 55 has moved (S34), and the V-GMLC 49 that has received the notification request message In order to confirm whether or not to report information, a notification procedure is performed with the corresponding user 55 (S35). Here, the notification procedure according to the present invention will be described in detail with reference to the drawings.

  The V-GMLC 49 confirms whether or not to report the location information of the user 55 to the LCS client 41 by the notification procedure, and transmits the result to the H-GMLC 45 by including the result in a notification response message (S36). . Here, the result included in the response message can be expressed by an instruction such as an attribute, a parameter, an element, and a value. If the V-GMLC 49 has not received a verification result from the user 55 during the notification procedure, the V-GMLC 49 has not received a verification result after counting a predetermined time using an internal timer. The notification response message including the result is transmitted to the H-GMLC 45.

  The H-GMLC 45 transmits a position information response message including the position information of the user 55 to the R-GMLC 43 according to consistency with a result value or a position information transmission condition included in the notification response message (S37). The R-GMLC 43 transmits the location information response message to the LCS client 41 (S38). Here, if the notification response message includes a value or instruction that does not approve the user's location information report or does not satisfy a preset transmission condition of the location information, the H-GMLC 45 The LCS client 41 is notified that the report cannot be made.

  3 and 4 are signal flowcharts illustrating the MT-LR procedure (S29) shown in FIG. 2 in detail. After the process corresponding to S21 to S28 in FIG. It is an MT-LR procedure implemented in different ways depending on whether it is a CS) domain or a packet service (PS) domain.

  FIG. 3 is a signal flowchart showing the MT-LR procedure in the circuit service (CS) domain. After the common process corresponding to S21 to S28 in FIG. 2 is executed, the GMLC 49 sends a PROVIDE SUBSCRIBER LOCATION message to the VMSC / MSC server 51. Transmit (S41). Here, the message includes the type of requested location information (for example, current location, speed information, etc.), user's IMSI (International Mobile Subscriber Identity), LCS QoS (Location Service Quality of Service) information (for example, accurate Degree, response time, etc.).

  The VMSC / MSC server 51 calls the user 55 through the RAN 53 to perform an authentication process (S42), and needs to notify and verify the user 55 in relation to the location information about the user 55. In this case, a location information notification message (for example, LCS Location Notification) is transmitted to the user 55 (S43). Here, whether or not the notification and verification are necessary can be confirmed by the privacy profile in the privacy check process of S31 of FIG.

  If the user 55 needs to verify the location information notification message, the user 55 transmits a verification response message (for example, LCS Location Notification Return) to the VMSC / MSC server 51 (S44). The VMSC / MSC server 51 transmits a location information request message to the RAN 53 (S45).

  The RAN 53 and the user 55 actually perform location tracking (S46), and the RAN 53 transmits the calculated location information to the VMSC / MSC server 51 by a location information response message (S47). The VMSC / MSC server 51 transmits the calculated location information to the GMLC 49 using a PROVIDE SUBSCRIBER LOCATION RESPONSE message (S48).

  Next, a common MT-LR procedure corresponding to S30, S37, and S38 in FIG. 2 is performed.

  FIG. 4 is a signal flowchart showing the MT-LR procedure in the packet service domain. After executing the common processes corresponding to S21 to S28 in FIG. 2, the GMLC 49 transmits a PROVIDE SUBSCRIBER LOCATION message to the SGSN 51 (S51). Here, the message includes the type of requested location information (eg, current location, speed information, etc.), the user's IMSI, and LCS QoS information (eg, accuracy, response time, etc.).

  The SGSN 51 calls the user 55 through the RAN 53 to perform an authentication procedure (S52), and performs a security procedure with the user 55 (S53).

  When notification and verification are required for the corresponding user 55 in connection with the position information of the user 55, the SGSN 51 transmits a position information notification message (for example, LCS Location Notification) to the corresponding user 55 (S54). If necessary, a verification response message (for example, LCS Location Notification Return) is received from the corresponding user 55 as a response to the location information notification message (S55). Here, whether or not the notification and verification are necessary can be confirmed by the privacy profile in the privacy check process of S31 of FIG.

  The SGSN 51 transmits a location information request message to the RAN 53 (S56), and the RAN 53 and the user 55 perform location tracking by exchanging messages (S57). The RAN 55 transmits the calculated location information to the SGSN 51 by a location information response message (S58), and the SGSN 51 transmits the calculated location information to the GMLC 49 using a PROVIDE SUBSCRIBER LOCATION RESPONSE message ( S59).

  Next, a common MT-LR procedure corresponding to S30, S37, and S38 in FIG. 2 is performed.

  The GMLC of FIGS. 3 and 4 is the V-GMLC 49 of FIG. 2, and is a GMLC of the network to which the user 55 to whom the LCS client 41 has requested location information currently belongs.

  5 and 6 are signal flowcharts showing in detail the notification procedure (S35) shown in FIG. 2, and the current service network to which the user belongs after performing the MT-LR procedure corresponding to S21 to S34 in FIG. A notification procedure realized by a different method depending on whether the network is a circuit service (CS) domain or a packet service (PS) domain will be described.

  In the present invention, when a user's location information is transmitted to a third user or another network entity within a specific preferred area, the user can perform a notification and verification procedure for the location information report. Privacy can be set to do.

  If the user is currently located in a preferred area and the privacy profile set for that area requires notification and verification procedures, confirm whether or not to transmit the user's location information. Therefore, the notification procedure is performed.

  FIG. 5 is a signal flowchart showing a notification procedure in the circuit service (CS) domain. After the MT-LR procedure corresponding to S21 to S34 in FIG. 2 (that is, the MT-LR procedure for the CS and PS domains) is performed, the GMLC 49 notifies the VMSC / MSC server 51 of a notification request message (for example, Provide Subscriber Location). Is transmitted (S61). Here, the GMLC 49 transmits a notification of location information transmission and a verification request to the VMSC / MSC server 51 using the notification request message.

  The VMSC / MSC server 51 performs an authentication process by calling the user 55 via the RAN 53 (S62), and notifies the user 55 of a notification and a verification request related to the current position information ( For example, LCS Location Notification) is transmitted (S63).

  If the user 55 needs to verify the location information notification message, the user 55 transmits a verification response message (for example, LCS Location Notification Return) to the VMSC / MSC server 51 (S64). The VMSC / MSC server 51 transmits the notification and the verification result related to the location information to the GMLC 49 by a notification response message (for example, Provide Subscriber Location ack) (S65). Here, the result included in the response message can be expressed by an instruction such as an attribute, a parameter, an element, and a value.

  Thereafter, the location information of the user 55 may or may not be transmitted to the LCS client 41 by the notification response message.

  FIG. 6 is a signal flowchart showing a notification procedure in the packet service (PS) domain. After the MT-LR procedure corresponding to S21 to S34 in FIG. 2 is performed, the GMLC 49 transmits a notification request message (for example, Provide Subscriber Location) to the SGSN 51 (S71). Here, the GMLC 49 transmits a notification and a verification request for position information transmission to the SGSN 51.

  The SGSN 51 calls the user 55 through the RAN 53 to perform an authentication process (S72), performs security procedures with the corresponding user 55 (S73), and then notifies the user 55 of the current location information. Then, a location information notification message (for example, LCS Location Notification Invoke) for notifying the verification request is transmitted (S74).

  When the user 55 needs to verify the location information notification message, the user 55 transmits a verification response message (for example, LCS Location Notification Return Result) to the SGSN 51 (S75). The notification related to the location information and the verification result are transmitted to the GMLC 49 using a notification response message (for example, Provide Subscriber Location ack) (S76). Here, the result included in the response message can be expressed by an instruction such as an attribute, a parameter, an element, and a value.

  Next, the location information of the user may be transmitted to the LCS client 41 by the notification response message or may not be transmitted.

  The GMLC shown in FIGS. 5 and 6 is the V-GMLC 49 shown in FIG. 2 and is a GMLC of the network to which the user who requested the location information by the LCS client currently belongs.

  The present invention relates to a process of checking whether a user is located in a favorite position or a favorite area set by the user, and the user is currently in the favorite position or favorite area. If located, confirming privacy for transmission of the location information, requesting the user to perform a procedure for notifying transmission of the location information according to the confirmed privacy, and responding to the request Receiving a response message and determining whether to transmit the user's location information.

  Further, the present invention provides a system for transmitting location information for a specific user using a network structure composed of SUPL agents, SLPs, and SETs of a SUPL network, and the user's preference set by the user. And if the user is currently located in the preferred location or preferred area, the preferred location or location within the preferred region. The method includes a step of confirming privacy information related to information transmission and a step of determining whether to transmit the user's location information to the LRE according to the privacy information.

  Further, various features of the present invention are described and explained in the following manner. Component reference numbers are not specified, but will be clearly understood by reference to the drawings and the general description.

  For example, in a location service, conditional reporting can be supported if the target UE is located within a specific geographic location. Under such conditions, an application for which conditional location tracking consent has been approved may be used by the user of the target UE after reporting the location of the target UE to the LCS client after the location tracking procedure is performed. You must notify and obtain location tracking consent. The target UE may also agree to the location tracking attempt after being notified of the location tracking request and approving the location tracking.

  In order to implement the various features described above, the present invention can employ various types of hardware and / or software components (modules). For example, each hardware module includes various circuits and components necessary to perform the method steps. Also, each software module (performed by the processor and / or other hardware) contains various codes and protocols necessary to perform the method steps of the present invention.

  The above-described embodiments and the advantages of the present invention described with reference to the drawings are merely examples, and the present invention is not limited to those skilled in the art. In particular, since the concept and content of the present invention can be applied to various communication schemes that operate in a similar manner based on general technology, the present invention can be applied to other types of communication specifications (eg, 3GPP, 3GPP2, 4G , IEEE, and OMA (for example, a SUPL network) can be adopted and realized.

  The description of the invention is merely exemplary and is not intended to limit the scope of the claims. Those having ordinary skill in the art will understand that various alternatives, modifications, and variations are possible.

It is a signal flowchart which shows the general privacy check method. 3 is a signal flowchart illustrating an embodiment of a location information service providing method according to the present invention. It is a signal flowchart which shows the MT-LR procedure of FIG. 2 in detail. It is a signal flowchart which shows the MT-LR procedure of FIG. 2 in detail. It is a signal flowchart which shows the notification procedure of FIG. 2 in detail. It is a signal flowchart which shows the notification procedure of FIG. 2 in detail.

Claims (14)

In a network system including Home GMLC (Gateway Mobile Location Center) and Visited GMLC (Gateway Mobile Location Center), the method provides location information of a target terminal,
Receiving, by the Home GMLC, a first LCS service request message for the location information of the target terminal from an LCS client;
Performing a first privacy check on the location of the target terminal by the Home GMLC;
Sending, by the Home GMLC, a second LCS service request message to the Visited GMLC;
Receiving, by the Home GMLC, a first LCS service response message including current location information of the target terminal;
By performing a second privacy check by the Home GMLC, the Home GMLC may forward the current location information to the LCS client, or the result of the second privacy check is the current location Determining whether a third LCS service request message may be sent if information-based notification and verification is required, wherein the second privacy check includes the current location information of the target terminal Performed after receiving said first LCS service response message comprising:
After performing the second privacy check, if the result of the second privacy check requests the notification and verification based on the current location information, the Home GMLC causes the third privacy check to Sending an LCS service request message;
Receiving the second LCS service response message by the Home GMLC in response to the third LCS service request message after performing the second privacy check, wherein the second LCS service A response message is received with an indication of the result of the notification and verification based on the current location information by the target terminal;
If the resulting indication indicates that reporting of the current location of the target terminal is permitted, the Home GMLC sends a third LCS service response message including the current location information of the target terminal To do
Including a method. The method of claim 1, wherein the first LCS service request message is received via a Request GMLC. The Request GMLC sends a routing information request to the Home Location Register (HLR) / Home Subscriber Server (HSS) to request a Home GMLC address, and the LCS client requests the location information of the target terminal. 3. The method of claim 2, wherein the method receives a result of the routing information request indicating whether or not it is authorized to do so. The method according to claim 1, wherein the first LCS service request message is approved according to the first privacy check based on a privacy profile of a target terminal stored in the Home GMLC or Privacy Profile Register (PPR). The method according to claim 1, further comprising transmitting a routing information request message by the Home GMLC to a Home Location Register (HLR) / Home Subscriber Service (HSS) of the target terminal. 6. The method of claim 5, further comprising receiving a routing information response message by the Home GMLC in response to the routing information request message. 7. The method of claim 6, wherein the routing information response message includes at least one of a Serving GPRS Supported Node (SGSN) and a Mobile Switching Center (MSC) / Visit Mobile Switching Center (VMSC) address. The method according to claim 1, wherein the current location information of the target terminal is calculated by performing a location determination between a radio access network (RAN) and the target terminal. The method of claim 1, wherein the indication of the result indicates whether reporting of the current location information is allowed or not allowed by the target terminal. The method of claim 1, further comprising: receiving a subscriber location message from a Visited GMLC by a Visited Mobile Switching Center (VMSC). The method of claim 10, further comprising performing an authentication process with the target terminal by the VMSC. 12. The method of claim 11, further comprising sending a location notification message to the target terminal by the VMSC to notify the target terminal that user verification is required. The method of claim 1, further comprising: receiving a subscriber location message from a Visited GMLC by a Serving GPRS Supported Node (SGSN). 14. The method of claim 13, further comprising sending a location notification message to the target terminal by the SGSN to notify the target terminal that user verification is required.

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