KR20090032054A - Set initiated area event triggered positioning method in mobile communication system - Google Patents

Abstract

A region related location check method of a roaming terminal is provided to perform region related location confirm by the mode of the SPL performing the determination procedure about the classified mode. Using SSRP message, the SUPL POST INITIAL message is delivered(S97). The SET(SUPL Enabled Terminal) and V-SLP exchange the successive message for performing the location confirm through H-SLP. The location of SET is calculated(S98). V-SLP transmits the calculated location value with SET through the SUPL REPORT message after H-SLP(S99,S100). If the place value of SET coincides with the place value defined in the trigger parameter(S101), SET delivers the place value of calculated SET to the SUPL agent of the SET inside(S114).

Description

How to check the location of roaming terminal in mobile communication system {SET INITIATED AREA EVENT TRIGGERED POSITIONING METHOD IN MOBILE COMMUNICATION SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system, and more particularly, to a method for a roaming terminal to identify a region related location by initiating a local event triggered session in a secure user plane location (SUPL) based location information system.

In the mobile communication system, the mobile communication network includes a related function unit for calculating the location of the terminal, and provides a location service for transmitting the location of the terminal to a certain entity periodically or at the request of the user. have. The structure of the network related to the location service is different depending on the internal network structure of 3GPP or 3GPP2.

The method for calculating the position of the terminal in the mobile communication system includes a cell-ID method for transmitting the ID of the cell to which the terminal belongs, measuring the radio wave arrival time from the terminal to each base station, and then using the triangulation to determine the position of the terminal. There are a method of calculation and a method using GPS.

However, in order to provide a location service to a user by using the above location calculation method, considerable signaling and location information must be transmitted between the mobile terminal and the location server. Accordingly, standardized positioning technologies for providing location services, that is, location services based on the location of the mobile terminal, are rapidly spreading. The location technologies may be provided through a user plane and a control plane, and as an example of the technologies, a secure user plane location (SUPL) providing a location service through the user plane is known. have.

The SUPL is an efficient method for transmitting location information necessary for calculating a location of a mobile station. The SUPL is a user plane data bearer for delivering location assistance information such as GPS assistance and carrying a location technology related protocol between a mobile terminal and a network. Use

In general, a SUPL network related to location services in a location information system includes a SUPL agent, a SULP Location Platform (SLP), and a SUPL enabled terminal (SET). The SUPL agent represents a logical service access point using actual measured location information, and the SLP represents a SUPL service access point in a network that accesses network resources to obtain location information.

The SET is a device capable of communicating with a SUPL network using a SUPL interface, for example, a user terminal (UMTS) of a UMTS, a mobile station (MS) of a GSM, an IS-95 MS or a laptop computer having a SET function. Laptop computer) or PDA. Also, the SET may be various mobile terminals connecting through a WLAN.

The SET supports procedures defined in SUPL in association with a network through a user plane bearer. In this case, the network originally registered by the user is called a home network, and when the user moves and is located in an area other than the home network area, the network of the corresponding area is called a visited network. In addition, SLP in the home network is referred to as H-SLP (Home-SLP), and SLP in the visited network is referred to as V-SLP (Visited-SLP). In this case, when the SUPL procedure is started in the network, an SLP to which an external client first connects is called a requesting SLP (R-SLP), which may or may not be the same as the H-SLP as a logical entity. In addition, the SET which aims to confirm the current position is defined as a target SET.

The SLP, which is a network element, actually plays a role of SLP (SUPL Positioning Center), which is an entity that calculates location, and a role of SLP other than calculating location information, for example, roaming, resource management, etc. It consists of SLC (SUPL Location Center) that plays a role. Accordingly, the SET may calculate location information through communication with the SPC via SLC (Proxy mode), or may directly connect with the SPC to calculate location information (Non-proxy mode).

By the way, the prior art proposes an immediate positioning method based on SUPL, but does not present an area-based, area-related, area event triggered location determination of roaming terminals based on SUPL.

Accordingly, an object of the present invention is to provide a method for variously and effectively verifying a location related to a roaming terminal based on SUPL.

In order to achieve the above object, the present application provides a process for transmitting a session start message for starting a trigger session by a roaming terminal to a Home-SUPL Location Center (H-SLC); Receiving a session response message from the H-SLC, including a location location identifier of an event zone, at least parameters associated with a secure session, and an address of a Home-SUPL Positioning Center (H-SPC), wherein the Area location identifiers are obtained from the Visited-SUPL Location Center (V-SLC) by the Visited-SUPL Location Center (H-SLC) and provided to the roaming terminal; Transmitting, by the roaming terminal, a positioning initialization message to the H-SPC; Performing a location procedure by the roaming terminal by establishing a secure session using parameters related to the H-SPC and the secure session; Receiving the measured position value of the roaming terminal from the H-SPC; Checking, by the roaming terminal, whether a local event trigger condition is satisfied by comparing the received measured location value with location values of an event area; If the local event trigger condition is satisfied, the roaming terminal provides the measured location value to the agent in its own; providing a method for determining the location of the roaming terminal in the mobile communication system, characterized in that comprises a. do.

As described above, the present invention proposes a method for performing a location related location of a roaming terminal in a SUPL-based location checking method so that various location checking methods can be implemented based on SUPL.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Hereinafter, preferred embodiments of the present invention will be described in detail.

The present invention is implemented in a SUPL network. However, the present invention can also be applied to a wireless communication system operating according to other standards.

According to the present invention, when the server and the terminal manage trigger information related to location checking in a session-based location information system, an area event triggered location check for a terminal roaming in a visited network (the terminal moves to a specific location Or continue to exist within, or move out of, a specific area).

In the location-related location check according to the present invention, the home network obtains the location identifiers obtained by requesting the visitor's location identifier (s) (area id (s)) of the area set up for the location-related location tracking (confirmation) and obtains the obtained location identifiers. It provides a roaming terminal (target SET).

In the location-related location check according to the present invention, instead of continuously tracking the location of the roaming terminal, first confirming whether it is close to a specific area (required area or an event area), and then confirming the location of the roaming terminal when approaching the specific area ( positioning procedure. The roaming terminal determines whether to start the positioning procedure according to whether the positioning start condition is satisfied. The fact that the location starting condition is satisfied means that the roaming terminal is close to an area (specific area, required area, and event area) specified in the local event trigger condition information.

If the actual location of the calculated roaming terminal belongs to the region specified in the local event trigger condition information (if the local event trigger condition is satisfied), the roaming terminal determines that the local event has occurred and calculates the calculated location value of the client (terminal, Or an agent included in the network).

Here, the occurrence of the local event refers to a case in which the terminal enters or exits a specific region or is confirmed to exist in the region.

In general, location services provided by a SUPL-based location information system are classified into a network-initiated case and a SET-initiated case service.

In addition, the SUPL-based location service has a proxy mode in which the H-SLP (or H-SLC) of the home network operates as a proxy to perform a positioning procedure between the location server and the roaming SET through the H-SLP, and the H-SLP. (Or H-SLC) operates in non-proxy mode, so it is divided into non-proxy mode that performs positioning procedure directly between location server and roaming SET without going through H-SLP. Here, the location server may be the H-SLP or may be a V-SLP.

In addition, the type of service may be classified according to whether the H-SLP (or H-SPC) performs the positioning function for calculating the location of the roaming SET or the V-SLP (or V-SPC) performs the positioning function. .

In the present application, various cases that can be distinguished as described above are largely divided into four embodiments according to whether the proxy mode is used when the terminal initiates a service or the network of which the location server is the SLP. .

First, a method for determining a location related to a location according to a first embodiment of the present invention will be described.

FIG. 1 is a diagram illustrating a region-related positioning method initialized by a SET according to a first embodiment of the present invention, and illustrates a roaming case, a SET-initiated case, a V-SLP positioning case, and a proxy mode. That is, the SET (target SET) is a roaming SET, the SET initializes the location-related positioning service, the V-SLP performs the positioning function (the V-SLP operates as a location server), and the H-SLP is the proxy mode. Use

As shown in FIG. 1, when a SUPL agent included in a SET receives a local-related location service (local event triggered service) request from an application running in the SET, the SET (SUPL agent) If no data connection is currently established in any network, a data connection is established with the packet data network (S90).

Once the data connection is established, the SET establishes a secure IP connection with the H-SLP using the default address provided from the home network, and initiates a positioning session by sending a SUPL TRIGGERED START message to the H-SLP (S91). ).

The SUPL TRIGGERED START message includes at least a session id, trigger type indicator (e.g., area event), lid, SET capabilities, and trigger parameters.

By transmitting the SET including a trigger type indicator parameter, the H-SLP learns that the current location-related location check is requested through the trigger type parameter included in the received SUPL INIT message.

The lid indicates the id of the cell in which the SET is currently located.

The trigger parameters represent area event triggered parameters related to location determination.

The trigger parameters may include trigger condition information. In addition, for example, the nature of location-related positioning (such as moving into or out of a specific area or within a specific area) and a specific area (name or exact location of a specific area) Value).

Upon receiving the SUPL TRIGGERED START message, the H-SLP verifies whether the SET is SUPL roamed based on the routing information (S92). When the SET is SUPL roamed, the H-SLP is included in the SUPL TRIGGERED START message. Determine the V-SLP based on the lid. The H-SLP is a determined V-SLP that triggers the RPL (Roaming Location Protocol) containing the SUPL TRIGGERED START message information to indicate that the SET (target SET) has initiated the SUPL positioning procedure. Reporting Request) message is forwarded to the V-SLP.

The H-SLP must include an area ids request indicator parameter in the SUPL TRIGGERED START message information (S93).

Accordingly, through the RLP TSRLRR message transmission, the H-SLP requests the V-SLP for the location identifier of the area used for the local event trigger session.

When the RLP TSRLRR message is received, the V-SLP determines a location method (posmethod) to be used for a region related session (local event triggered session) from the SET capability included in the RLP TSRLRR message. The V-SLP transmits an RLP Triggered Standard Roaming Location Reporting Answer (TSLRA) message including the SUPL TRIGGER RESPONSE message information to the H-SLP. The transmission of the RLP TSRLRA message informs the H-SLP that the V-SLP is ready for a local event triggered session.

The V-SLP also checks the area identifier request indicator included in the RLP TSRLRR message. If location identifiers are requested by the H-SLP, the V-SLP includes location identifiers corresponding to a region for a local event trigger session in the SUPL TRIGGER RESPONSE message information and then includes the SUPL TRIGGER RESPONSE message information. The RLP TSRLRA message must be transmitted to the H-SLP (S94).

The H-SLP forwards the received SUPL TRIGGERED RESPONSE message to the SET (S95). The SUPL TRIGGERED RESPONSE message MUST NOT include an H-SLP address to inform the SET that a new connection should not be established.

The SUPL TRIGGERED RESPONSE message includes a location method (posmethod). In addition, the SUPL TRIGGERED RESPONSE message may include a location identifier (area id (s)) of a region defined for a local event triggered session. Preferably, the area ids are IDs of cells belonging to an area where the SUPL agent has requested location confirmation, a mobile country code (MCC), a mobile network code (MNC), or a location area code (LAC). Information indicating a location area on an actual network or a primary scrambling code number. In particular, in the case of WCDMA, it corresponds to a primary scrambling code number.

The SET may then release the IP connection with the H-SLP.

If a location identifier (area id or area ids) is received through the SUPL TRIGGER RESPONSE message, the SET checks whether a location determination session start condition is satisfied.

For example, whether or not the positioning session start condition is satisfied may be confirmed by comparing a location identifier of a current SET with location identifiers received from the H-SLP.

That is, the SET compares the ID (the current area id) of the cell in which the current SET is located with the plurality of received cell IDs (the received area ids) and checks whether there is a matching area ID.

When the nature of the local event included in the trigger parameter trigger_params determines whether the SET enters or is located in a specific region, the SET may match at least one of the received location identifiers with the location identifier of the current SET. In this case, a positioning session is started. In this way, if the at least one of the received position identifiers matches the position identifier of the current SET, the SET determines that the positioning session start condition is satisfied.

On the other hand, when the nature of the local event confirms that the SET comes out of a specific region, the SET determines that the location session start condition is satisfied if the received location identifiers do not match the current location identifier of the SET.

As such, a comparison between the received location identifiers and the current location identifier of the SET or a regional event trigger of the SET indicates that a correct position fix for the SET should be performed. That is, the SET should check its approximate location to check whether the current SET is close to the area requested by the SUPL agent. Therefore, rather than always calculating (tracking) the location of the SET, it is starting to calculate the location of the SET when it is determined that the SET is close to the requested area.

If the location session start condition is satisfied through the comparison of the location identifiers, the SET recognizes that it has accessed the currently requested area, and sends a SUPL location initialization message (SUPL POS INIT message) to the H-SLP. Initiate a positioning session (S96). The SUPL POS INIT message includes at least a session-id and a location identifier (the current location identifier of SET). Here, after the SET connects to the packet data network when the circuit switched data connection is not established, the SET transmits the SUPL POS INIT message to the H-SLP to start a positioning session with the V-SLP.

The H-SLP acting as a proxy forwards the received SUPL POST INIT message to the V-SLP performing the location checking function using the RLP SSRP message (S97).

Upon receiving the RLP SSRP message, the V-SLP may perform step S99 without performing step S98 if the position value calculated based on the information (for example, cell id) included in the RLP SSRP message satisfies the required QoP. Can be. If the calculated position value does not satisfy the required QoP, the process proceeds to step S98. Thus, in step S98, it can be seen that cell-id based positioning methods are not used.

The SET and the V-SLP exchange a series of messages for performing the actual positioning through the H-SLP to calculate the position of the SET (S98). Preferably, the messages exchanged between the V-SLP and the SET include a session ID and a protocol (RRLP, RRC or TIA-801) to be used for positioning. The position calculation of the SET may be performed based on the measurement value received by the V-SLP from the SET (SET-assisted mode), or may be performed based on assistance obtained from the V-SLP by the SET (SET-based mode). . In FIG. 1 showing the first embodiment, since the position calculation is performed by the SET assisted mode, the V-SLP sets the calculated position value via the SUPL REPORT message via the H-SLP. To transmit (S99, S100). When the position calculation is performed by the SET based mode, the SUPL REPORT message is not necessary.

Therefore, when the position value of the SET is received from the V-SLP via the H-SLP, the SET checks whether the local event trigger condition is satisfied, that is, whether the local event has occurred, and the calculated position value and the trigger parameter. Compares the location values of specific regions (event regions) defined in (trigger_params).

As a result of the comparison, if the calculated position value of the SET does not match the position value defined in the trigger parameter, the SET determines that the local event trigger condition is not satisfied (the local event does not occur) (S101), and the SET In step S102, the SUPL POS INIT message is retransmitted to the V-SLP via the H-SLP (S102 and S103). If no local event occurs, steps S102-S107 and steps S108-S113 may be repeatedly performed. In FIG. 1, when steps S96-S107 are satisfied with the start condition for positioning session for location calculation but no local event occurs, the step of calculating the actual location of the SET is repeatedly performed.

However, if the calculated position value of the SET coincides with the position value defined in the trigger parameter (when a local event occurs) (S101), the SET proceeds to S114 without performing steps S102-S113, and the SUPL inside the SET is performed. The calculated position value of the SET is transmitted to the agent (S114).

On the other hand, in step S113, if the calculated position value of the SET received from the H-SLP via step S112 matches the position value defined in the trigger parameter (if a local event occurs), the SET informs the internal SUPL agent. The calculated position of the SET is transmitted (S114).

The SET then sends a SUPL END message to the H-SLP and the H-SLP sends the SUPL END message to the V-SLP by including it in an RLP SSRP tunnel message, indicating that the triggered session has ended. (S115, S116).

The SET and V-SLP then release all resources associated with the positioning session, respectively.

As described above, in the first embodiment of the present invention illustrated in FIG. 1, when the roaming terminal SET initiates a region related location checking service, the H-SLP uses the V- Obtained from SLP and provided to the SET. When the positioning session start condition is met to calculate the actual position of the SET, the SET and V-SLP establish a positioning session via the H-SLP acting as a proxy, calculate the actual position of the SET, and calculate the SET If a local event occurs based on the position value of, SET sends a SUPL END message to terminate the positioning session.

An area-specific location checking method according to a second embodiment of the present invention will be described.

2 is a view illustrating a region-related location checking method in which a region-related trigger session is initiated by a SET according to a second embodiment of the present invention.

As shown in FIG. 2, the region-specific positioning method according to the second embodiment of the present invention applies a roaming case, a SET-initiated case, an H-SLP positioning case, and a proxy mode.

In the second embodiment according to the present invention, in contrast to the first embodiment, the H-SLP rather than the V-SLP performs a positioning function for calculating the position of the SET.

Therefore, when the positioning session start condition is satisfied (approximate position of SET is confirmed) and the actual position of the SET is calculated, the SET sets the positioning session with the H-SLP having the positioning function to set the actual position of the SET. Calculate the correct position.

When the SET roamed with the V-SLP initiates a service for confirming a location related to its area, a positioning procedure for calculating the actual position of the SET may be performed through the V-SLP (first embodiment). May be performed via H-SLP (Second Embodiment).

A method for identifying a location related to a location according to a third embodiment of the present invention will be described.

3 is a view showing a region-related location checking method according to a third embodiment of the present invention, and shows a roaming case, a SET-initiated case, a V-SLP positioning case, and a non-proxy mode. That is, the SET (target SET) is a roaming SET, the SET initializes the location-related positioning service, the V-SLP performs a positioning function, and the H-SLP uses a non proxy mode.

The V-SLP includes a V-SLC and a V-SPC, and the H-SLP includes a H-SLC and an H-SPC.

Compared to the first embodiment shown in FIG. 1, the third embodiment shown in FIG. 3 is different from that in particular, a positioning session for actual positioning of the SET is directly set between the V-SPC and the SET without going through the H-SLC. is to perform the positioning procedure.

The third embodiment is described in particular different from the first embodiment as follows.

When the SET sends a SUPL TRIGGERED START message including the session id, trigger type indicator (eg area event), lid, SET capabilities, and trigger_params to the H-SLC (S121), the H-SLC checks the routing information and the SET roams. Check whether the SET (S122). If the SET is a roaming SET, the H-SLC requests and obtains location identifiers (area ids) of regions defined in the regional event trigger session to the V-SPC via the V-SLC (S123-S127).

The H-SLC transmits a SUPL TRIGGERED RESPONSE message to the SET (S128). The SUPL TRIGGERED RESPONSE message includes a session id, posmethod, V-SPC address, area ids, SET auth-key, and key-id 4. The V-SPC address indicates the address to which the SET will connect when establishing a positioning session. The area ids represent location identifiers of areas defined in a local event trigger session. The SET auth-key and key-id 4 are parameters to be used for establishing a secure session when establishing a direct session between the SET and the V-SPC without a proxy server. The SET recognizes that a secure session should be established using the SET auth-key and the key-id 4 by accessing the V-SPC address.

When the positioning session start condition is satisfied, the SET transmits a SUPL POS INIT message to the V-SPC to initiate a positioning session, and the V-SPC and the SET perform a positioning procedure to calculate the actual position of the SET (S129). -S131).

The SET checks whether the local event has occurred by checking whether the calculated position value of the SET satisfies the local event trigger condition (S132).

If the local event has not occurred, the steps S133-S136 are repeatedly performed.

If the local event has occurred, the SET transmits the calculated position value to the SUPL agent in the SET (S141), and the SET releases the triggered session by sending a SUPL END message to the V-SPC (S142).

As described above, in the third embodiment of the present invention illustrated in FIG. 3, when the roaming terminal SET initiates an area-related location checking service, the H-SLC uses V- to determine the location identifiers of the area associated with the area event triggering session. It is obtained from V-SPC via SLC and provided to the SET. When the positioning session start condition is met to calculate the actual location of the SET, the SET and V-SPC establish a positioning session with each other directly without a proxy server, calculate the actual location of the SET, and calculate the calculated location value of the SET. If a local event has occurred, the SET sends a SUPL END message to terminate the positioning session.

A method for confirming location related to a region according to a fourth embodiment of the present invention will be described.

FIG. 4 is a view illustrating a region-related location checking method according to a fourth embodiment of the present invention, and illustrates a roaming case, a SET-initiated case, an H-SLP positioning case, and a non-proxy mode. That is, a SET (target SET) is a roaming SET, the SET initializes a location-related location service, the H-SLP performs a positioning function, and the H-SLP uses a non proxy mode.

The V-SLP includes a V-SLC and a V-SPC, and the H-SLP includes a H-SLC and an H-SPC, and in particular, the H-SPC performs a positioning function.

Compared to the first embodiment shown in FIG. 1, the fourth embodiment shown in FIG. 4 is different from that in which the H-SLP (especially H-SPC) performs the positioning function for the actual positioning of the SET and the H- SLC uses non proxy mode.

The fourth embodiment will be described in more detail below with respect to the first embodiment.

When the H-SLC transmits a SUPL TRIGGERED RESPONSE message to the SET, the H-SLC further includes an H-SPC address, a SET auth-key, a key-id 4 parameter, and the like in the message (S157).

The SET auth-key and key-id 4 parameters are for use when establishing a secure session to perform a positioning procedure between the H-SPC and the SET since the H-SLC uses a non proxy mode. The H-SPC address is the address of the H-SPC to which the SET will establish a positioning session.

The SET transmits a SUPL POS INIT message to the H-SPC when the positioning session start condition is satisfied (S158), and the H-SPC includes a lid (SET (roaming SET) location identifier of the current position of the SUPL POS INIT message). In order to convert (cell id)) into a position estimate value, a conversion request is obtained through the H-SLC to the V-SLC to obtain a position estimate value of the lid (S159-S162).

The H-SPC checks whether the obtained position estimate satisfies QoP, and if it is satisfied, transmits a SUPL REPORT message to the SET (S164).

However, if the obtained position estimate does not satisfy the QoP, the H-SPC establishes a positioning session with the SET to calculate the actual position of the SET (S163). When the actual position value of the SET is calculated, the H-SPC transmits the calculated position value to the SET by transmitting a SUPL REPORT message (S164).

* SET is to check whether a local event occurs by comparing the calculated position value received with the position value of the region defined in the local event trigger condition.

In the fourth embodiment of the present invention illustrated in FIG. 4, when the roaming terminal SET initiates a region related location checking service, the H-SLC sends the location identifiers of the regions associated with the region event triggering session via the V-SLC. Obtained from the V-SPC and provided to the SET. When the start of the positioning session to calculate the actual location of the SET is satisfied, the SET and H-SPC establish a positioning session with each other directly without a proxy server, calculate the actual location of the SET, and calculate the calculated location value of the SET. If a local event has occurred, the SET sends a SUPL END message to terminate the positioning session.

1 is a view showing a region-related location checking method according to a first embodiment of the present invention.

2 is a view showing a region-related location checking method according to a second embodiment of the present invention.

3 is a view showing a region-related location checking method according to a third embodiment of the present invention.

4 is a view showing a region-related location checking method according to a fourth embodiment of the present invention.

Claims (12)

Transmitting, by the roaming terminal, a session start message for starting a trigger session to a Home-SUPL Location Center (H-SLC); Receiving a session response message from the H-SLC, including a location location identifier of an event area, at least parameters associated with a secure session, and an address of a Home-SUPL Positioning Center (H-SPC); Here, the area location identifiers are obtained from the Visited-SUPL Location Center (V-SLC) by the Visited-SUPL Location Center (H-SLC) and provided to the roaming terminal. Transmitting, by the roaming terminal, a positioning initialization message to the H-SPC; Performing a location procedure by the roaming terminal by establishing a secure session using parameters related to the H-SPC and the secure session; Receiving the measured position value of the roaming terminal from the H-SPC; Checking, by the roaming terminal, whether a local event trigger condition is satisfied by comparing the received measured location value with location values of an event area; And when the local event trigger condition is satisfied, the roaming terminal providing the measured location value to an agent within the roaming terminal. The method of claim 1, The area of the roaming terminal in the mobile communication system, characterized in that the roaming terminal transmits the positioning initialization message to the H-SPC when the condition information is satisfied by comparing the currently located area location identifier with the received area location identifier. How to find the relevant location. The method of claim 1, wherein the session start message, And at least trigger type information and trigger parameters. 4. The method of claim 3, wherein the trigger type information indicates a local event trigger type. The method of claim 3, wherein the trigger parameter, And a location characteristic of a location related to location confirmation or an event location location of the roaming terminal in a mobile communication system. Transmitting, by the roaming terminal, a session start message including trigger type information indicating a local event trigger type to a first server; Receiving from the first server a session response message comprising location identifiers of an event location; Comparing a current location identifier with location identifiers of the event area; According to the comparison, in order to start precise positioning, including the step of transmitting a positioning initialization message to the first server, characterized in that the location-related positioning method of a roaming terminal in a mobile communication system. The method of claim 6, And the area location identifiers are obtained from the second server by the first server. The method of claim 6, wherein the local location identifiers are: It corresponds to any one of the ID of the cells belonging to the event region, mobile country code (MCC), mobile network code (MCC), location area code (LAC), primary scrambling code number (primary scrambling code number) Location-related location checking method of roaming terminal in mobile communication system. The method of claim 6, wherein the positioning initialization message, If the location-related nature associated with location-related location checking indicates that the roaming terminal enters or is in a specific area, at least one of the received area location identifiers is associated with a current area location identifier of the roaming terminal. And if it matches, transmitting to the first server. The method of claim 6, wherein the positioning initialization message, If the location-related nature associated with the location-related location indicates that the terminal is from a particular area, if the received area location identifiers and the current area location identifier of the roaming terminal does not match, it is transmitted to the first server A method for determining a location related to a roaming terminal in a mobile communication system. The method of claim 6, And said session start message further comprises a trigger parameter. The method of claim 11, wherein the trigger parameter, And at least a location characteristic of a location related to location confirmation or a location value of the event area.

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