KR20070105836A - Network initiated area event triggered positioning method for roaming terminal in mobile communication system - Google Patents

Abstract

An area-based location verification method of a roaming terminal in a mobile communication system is provided to solve a problem of the related art that an area-based location verification of a loaming terminal based on a SUPL is not suggested. The first server transmits a message of session initialization used to initialize a trigger session to a roaming terminal. A session starting message is received from the roaming terminal. The second server requests and obtains location identifiers of an area related to area-based location verification. A session response message including at least trigger parameter is transmitted to the roaming terminal. The location verification initializing message is received from the roaming terminal and delivered to the second server. A calculated location value of the roaming terminal is received from the second server and delivered to the roaming terminal. The calculated location value is provided to an agent if the location value is received from the roaming terminal.

Description

How to determine the location of roaming terminal in mobile communication system {NETWORK INITIATED AREA EVENT TRIGGERED POSITIONING METHOD FOR ROAMING TERMINAL IN MOBILE COMMUNICATION SYSTEM}

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.

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 confirming a region-related location of a roaming terminal by initializing a region-related location determination 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, a method for determining a location related to a location in a mobile communication system according to the present invention includes: transmitting, by a first server, a session initialization message for initiating a trigger session to a roaming terminal; Receiving a session start message from the roaming terminal; Requesting and obtaining location identifiers of a location related to a location related location from a second server; Transmitting a session response message including at least a trigger parameter to the roaming terminal; Receiving a positioning initialization message from the roaming terminal and transmitting the received positioning initialization message to the second server; Receiving the calculated position value of the roaming terminal from the second server and transmitting the calculated position value to the roaming terminal; And providing the agent to the agent when the calculated position value is transmitted from the roaming terminal.

The first server transmits the location location identifiers obtained from the second server to the roaming terminal through the session response message. Advantageously, said first server is an H-SLP and said second server is a V-SLP.

In order to achieve the above object, a method for determining a location related to a location in a mobile communication system according to the present invention includes: transmitting, by a first server, a session initialization message for initiating a trigger session to a roaming terminal; Receiving a session start message from the roaming terminal; Requesting and obtaining location identifiers of a location related to location-related location confirmation from a second server; Transmitting a session response message including at least a trigger parameter to the roaming terminal; Receiving a positioning initialization message from the roaming terminal; Transmitting, by the first server, the calculated position value of the roaming terminal to the roaming terminal by performing a positioning procedure with the roaming terminal; And providing the agent to the agent when the calculated position value is transmitted from the roaming terminal.

The first server transmits the area location identifiers obtained from the second server to the roaming terminal through the session response message.

In order to achieve the above object, a method for determining a location related to a location in a mobile communication system according to the present invention includes: receiving, by a roaming terminal, a session initialization message for initializing a trigger session from a first server; Sending a session start message to the first server; Receiving from the first server a session response message comprising at least a trigger parameter; Sending a location initialization initialization message to the first server; Receiving a measured position value of the roaming terminal from the first server; Checking whether a local event trigger condition is satisfied by comparing the received measured position value with a position value included in the trigger parameter; And when the local event trigger condition is satisfied, the roaming terminal transmitting the measured position value to the first server.

The roaming terminal receives location identifiers of areas related to location-related location confirmation from the first server through the session response message.

In order to achieve the above object, a method for determining a location related to a location in a mobile communication system according to the present invention includes: transmitting, by a first server, a session initialization message for initiating a trigger session to a roaming terminal; Receiving a session start message from the roaming terminal, the session start message comprising at least parameters related to secure session establishment; Requesting and obtaining, by the first server, location identifiers of regions related to location-related location confirmation from a third server through a second server; Transmitting a session response message including at least a trigger parameter and an address of the third server to the roaming terminal; And receiving the calculated position value for the roaming terminal from the roaming terminal and providing it to the agent.

The first server transmits the acquired location location identifiers to the roaming terminal through the session response message. Preferably, the first server is an H-SLC, the second server is a V-SLC, and the third server is a V-SPC.

In order to achieve the above object, a method for determining a location related to a location in a mobile communication system according to the present invention includes: transmitting, by a first server, a session initialization message for initiating a trigger session to a roaming terminal; Receiving a session start message from the roaming terminal, the session start message comprising at least parameters related to secure session establishment; Requesting and obtaining, by the first server, location identifiers of a region related to a location-related location check from a second server; Sending, by the first server, a session response message including at least a trigger parameter and an address of a third server to the roaming terminal; And receiving the calculated position value for the roaming terminal from the roaming terminal and providing it to the agent.

The first server transmits the acquired location location identifiers to the roaming terminal through the session response message. Preferably, the first server is an H-SLC, the second server is a V-SLC, and the third server is an H-SPC.

In order to achieve the above object, a method for determining a location related to a location in a mobile communication system according to the present invention includes: receiving, by a roaming terminal, a session initialization message for initiating a trigger session from a first server; Sending a session start message to the first server, the session start message comprising at least parameters associated with a secure session; Receiving from the first server a session response message comprising at least a trigger parameter and an address of a second server; Transmitting, by the roaming terminal, a positioning initialization message to the second server; Performing a location procedure by the roaming terminal establishing a secure session with the second server using the parameters related to the secure session; Receiving a measured position value of the roaming terminal from the second server; Checking, by the roaming terminal, whether a local event trigger condition is satisfied by comparing the received measured position value with a position value included in the trigger parameter; And when the local event trigger condition is satisfied, the roaming terminal providing the measured position value to the first server.

The roaming terminal receives location identifiers of a location related to a location-related location check from the first server through the session response message.

The first server may obtain the location location identifiers from the second server via a third server and provide the location location identifiers to the roaming terminal. In this case, the first server is an H-SLC, the second server is a V-SPC, and the third server is a V-SLC.

In addition, the first server may obtain the location location identifiers from a third server and provide the roaming terminal. In this case, the first server is an H-SLC, the second server is an H-SPC, and the third server is a V-SLC.

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 SUPL-based location information systems are classified into network-initiated case and 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, when a network initiates a service, it is divided into four embodiments according to whether a proxy mode is used and a location server is an SLP of a network.

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 location-related location checking method initialized by a network according to a first embodiment of the present invention, and illustrates a roaming case, a network-initiated case, a V-SLP positioning case, and a proxy mode. That is, the SET (target SET) is a roaming SET roaming to the visited network to which the V-SLP belongs, the V-SLP performs a positioning function (the V-SLP operates as a location server), and the H-SLP operates in proxy mode. use.

As shown in FIG. 1, when a location-related location request is requested from an external location services (LCS) client, the SUPL agent sends a mobile location to the H-SLP to request a location-related location service (local event trigger service). protocol) transmits a Triggered Location Reporting Request (TLRR) message (S10).

The MLP TLRR message includes parameters such as ms-id, client-id, QoP, and tlrr_event. The ms-id represents a target SET, and the client-id represents an ID of the SUPL agent. The Qop represents positioning accuracy (temporal delay and spatial accuracy). In addition, the tlrr_event is a location-related trigger parameter, for example, the nature of location-related location (move to or out of a specific area or within a specific area) and a specific area (name of a specific area or It can be various information about the condition information related to the location, such as the exact location value).

The MLP TLRR message additionally indicates the type of positioning value (indicating whether it is the current positioning value or the most recently confirmed value) and the priority for each positioning request when there are several position requests. Parameters that can be set may be included.

Upon receiving the MLP TLRR message, the H-SLP must authenticate the SUPL agent based on the client-id included in the MLP TLRR message and check whether the SUPL agent is authenticated for the location service. .

In addition, the H-SLP may apply the subscriber privacy function to the SUPL agent based on the received ms-id.

The H-SLP checks whether the target SET (hereinafter referred to as SET) supports SUPL using the SET lookup table, and checks whether the SET is currently SUPL roamed using routing information (S11). .

If it is determined that the SET supports SUPL and is currently roaming, the SLP sends a SUPL INIT message to the SET to start an area event trigger session with the SET (S12). The SUPL INIT message may be transmitted through a wireless application protocol (WAP) push or a short message service (SMS) trigger or a session initiation protocol (SIP) push or UDP / IP.

The SUPL INIT message includes at least a session-id, a trigger type indicator (e.g., area event), an SLP mode (proxy / non-proxy mode indicator), and a location method (posmethod) parameter to use.

In addition, the H-SLP may confirm the privacy of the SET before performing the step S11. If the user needs a notification related to the location information, the H-SLP may be included in the SUPL INIT message. Notification parameters may be further included.

As such, the H-SLP transmits a trigger type indicator parameter included in the SUPL INIT message, so that the SET knows that a current location related location is requested through the trigger type parameter included in the received SUPL INIT message. do.

In addition, when receiving the SUPL INIT message, the SET establishes a data connection with the packet data network (3GPP or 3GPP2) if the SET itself does not currently have a data connection established in any network (S13).

In addition, to determine whether the H-SLP uses a proxy mode or a non-proxy mode, the SET checks the SLP mode parameter included in the received SUPL INIT message. If the SLP mode parameter indicates the proxy mode, the SET recognizes that the H-SLP uses the proxy mode and establishes a secure IP (Internet protocol) connection with the H-SLP. At this time, the IP connection is established by using the address of the H-SLP prepared in advance by the Home network as a SET.

When the data connection is established in this way, the SET transmits a SUPL TRIGGER START message to the H-SLP acting as a proxy to start an area event triggered session (S14). ). The SUPL TRIGGER START message includes at least session-id, lid (location identifier) and SET capability information. The lid indicates the ID of the cell currently located as an identifier of the current position of the SET.

When the SUPL TRIGGER START message is received, the H-SLP determines the V-SLP based on a lid included in the SUPL TRIGGER START message. The H-SLP then sends the SUPL TRIGGER START message to inform the V-SLP that a SET (target SET) has initiated a SUPL positioning procedure (also referred to as a positioning procedure or a positioning procedure). A Roaming Location Protocol (RLP) Triggering Standard Roaming Location Reporting Request (TSRLRR) message including information is forwarded to the V-SLP (S15).

In the SUPL TRIGGER START message, the H-SLP includes an area identifier request indicator parameter and a tlrr_event parameter included in the MLP TLRR message of step S10 (ie, area information requested by a SUPL agent). Parameters associated with local event triggers).

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 the location identifiers corresponding to the area for the 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 (S16).

The H-SLP forwards the received SUPL TRIGGER RESPONSE message to the SET including the session-id, posmethod, and trigger parameters (trigger_params).

The trigger parameter indicates trigger condition information related to a local event trigger for positioning.

For example, the trigger parameter may include trigger condition information indicating a characteristic of a local event and a specific region. The nature of the local event may indicate whether or not to move into or out of a specific area or within a specific area. The specific region may include at least one of a name, a region name, a latitude and longitude of a specific location on an administrative region.

In addition, the H-SLP may optionally include, in the SUPL TRIGGER RESPONSE message, location identifiers (area ids or location identifiers (lids)) of a region defined for a region related session (S17).

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.

Then, the H-SLP informs the SUPL agent that the location request has been approved through an MLP Triggered Location Reporting answer (TLRA) message (S18).

The H-SLP includes a request identifier parameter req_id in the MLP TLRA message for use as a transaction identifier for the entire process of the local event triggered session.

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

If an 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 personality of the local event included in the trigger parameter trigger_params determines whether the SET enters or is 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, if the SET is determined to be close to the requested area, the SET notifies the start of a positioning session and the location server (here V-SLP) begins to calculate the location of the SET. will be.

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. A positioning session (also referred to as a positioning session or a positioning session) is initiated (S19). 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 positioning function using the RLP SSRP message (S20).

Upon receiving the RLP SSRP message, the V-SLP may perform step S22 immediately without performing step S21 if the position value (eg, cell id) calculated based on the information included in the RLP SSRP message satisfies the required QoP. Can be. If the calculated cell id does not satisfy the required QoP, the flow proceeds to step S21. Thus, in step S21, 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 (S21). 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. (S22, S23). 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.

As a result of the comparison, if the 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 has not occurred) (S24), and the SET In step S19, the SUPL POS INIT message is transmitted again through the H-SLP to the V-SLP (S19, S20).

However, if the position value of the SET matches the position value defined in the trigger parameter (a local event occurs) (S24), the SET transmits a SUPL REPORT message to the H-SLP (S25). The SUPL REPORT message includes the calculated position and session id of the SET received from the V-SLP.

The H-SLP transmits to the SUPL agent including the calculated position value of the SET (position that caused the local event) and the request id (req-id) in the MLP TLREP message (S26).

If a response to the location report requested by the SUPL agent is delivered, the SET waits for a predetermined time.

Then, the SET repeats the steps S19-S26 or the steps S19-S24 according to whether the local event trigger condition is satisfied (S27).

When the SUPL agent delivers the last report requested, the H-SLP sends a SUPL END message to the SET to inform the end of the positioning session (S28). In addition, the H-SLP informs that the positioning session is terminated by transmitting the SUPL END message information to the V-SLP through an RLP SSRP message. Then, the SET and the V-SLP release all resources related to the positioning session, respectively (S28).

As described above, in the first embodiment of the present invention shown in FIG. 1, when the network initiates the positioning service, the V-SLP having a positioning function confirms the area-related position of the roaming SET (calculation). The roaming SET and the V-SLP, via the H-SLP acting as a proxy, establish a local event triggered session and calculate the local location of the roaming SET.

Next, an area-related location checking method according to a second embodiment of the present invention will be described.

2 shows a method for determining location related location initialized by a network according to a second embodiment of the present invention.

In the region-specific positioning method according to the second embodiment of the present invention, a roaming case, a network-initiated case, an H-SLP positioning case, and a proxy mode are applied. In the second embodiment according to the present invention, in contrast to the first embodiment, the H-SLP has a positioning function.

That is, in the case of the second embodiment, the local event trigger session is established in the same manner as in the case of the first embodiment shown in FIG. 1 (S10-S18) (A-I).

If the positioning session start condition is met, the SET (roaming SET) message includes a SUPL POS INIT message containing at least the current position identifier (lid) and SET id (ms id) to begin the procedure of calculating the SET's own position. Is transmitted to the H-SLP acting as a proxy (J).

The H-SLP operating as a proxy (using the proxy mode) sends the current position identifier (lid) and the id (msid) of the SET received in the RLP SRLIR message to the V-SLP (K) .

The V-SLP translates the current position identifier (lid) into a position estimate and returns the position estimate to the H-SLP (L).

The H-SLP checks whether the returned position estimation value satisfies QoP, and if the returned position tracking value satisfies QoP, the H-SLP does not perform the position confirmation (SUPL POS) procedure (M). Immediately send the returned position estimate to the SET via a SUPL REPORT message (N).

However, if the returned position estimate does not satisfy the QoP, the H-SLP performs a positioning procedure (SUPL POS) with the SET to calculate the position value of the SET, and then transmits the calculated position value to the SET through the SUPL REPORT message. (M) (N).

Thereafter, the process of checking whether or not the local event has occurred and providing an accurate local related location value of the SET to the SUPL agent according to whether the local event has occurred is the same as in the case of the first embodiment.

As described above, in the second embodiment of the present invention, when the network initiates the location-related location service of the roaming SET roamed with the V-SLP, the area between the V-SLP and the roaming SET is passed through the H-SLP acting as a proxy. When the location session start condition is met and a SUPL POS INIT message is sent from the roaming SET to the H-SLP, the H-SLP calculates the actual location of the roaming SET.

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 illustrating a location associated with a location according to a third embodiment of the present invention. The third embodiment of the present invention exemplifies a case in which a roaming case, a network-initiated case, a V-SLP positioning case, and an H-SLP use a non-proxy mode. The SET (target SET) is a roaming SET roamed to the V-SLP, and the V-SLP performs a positioning function.

The V-SLP includes a V-SPC and a V-SLC. More specifically, the V-SPC performs a positioning function. The H-SLP includes an H-SLC and an H-SPC. In FIG. 3, only the H-SLC is shown, and the H-SLC uses a non proxy mode.

Steps S30-S33 are the same as steps S10-S13 shown in FIG.

However, the roaming SET confirming the SLP mode value included in the SUPL INIT message transmitted from the H-SLC in S32 recognizes that the H-SLC uses the non-proxy mode.

The SET transmits a SUPL TRIGGERED START message to the H-SLC, including at least session id, lid, and SET capabilities, to initiate a region related event triggered session. In addition, the SET further includes SET nonce and key-id 2 in the SUPL TRIGGERED START message for authentication required in the non-proxy mode. The key-id 2 corresponds to a key for generating a security key to be used for establishing a security session (PSK-TLS session) between the V-SPC and the SET (S34).

The H-SLC determines the V-SLC and sends an RLP TSRLRR message containing the SUPL TRIGGERED START message information to the determined V-SLC. Thus, the H-SLC informs the V-SLC that the SET has initiated a SUPL positioning procedure.

In the RLP TSRLRR message, the H-SLC includes a region identifier request indicator parameter and a region such as a tlrr_event parameter included in the MLP TLRR message in step S30 (ie, region information requested by a SUPL agent). Parameters related to the event trigger) (S35).

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

The V-SLC informs the V-SPC about local event triggered sessions via internal communication. The V-SLC uses the key-id 2 and the SET nonce to generate a key to be used for mutual authentication between the V-SPC and the SET. The V-SLC delivers the generated key to the V-SPC via internal communication. The V-SPC allows or rejects the request related to the local event trigger session and notifies the V-SLC of the result (S36).

The V-SLC checks the area ids request indicator sent from the H-SLC, and if a location identifier is requested by the H-SLC, the V-SLC sends a zone for the local event triggered session in the SUPL TRIGGERED RESPONSE message. Must include location identifiers for

The V-SLC determines, according to the SET capabilities received in step S35, a posmethod to be used for the local event trigger session and informs that the SUPL TRIGGERED RESPONSE message information is ready for the local event trigger session. A RLP TSRLRA message including a is transmitted to the H-SLC (S37).

The H-SLC generates a key (security key; PSK_SPC_Key) to be used for mutual authentication between the V-SPC and the SET, and passes the generated key (security key) to the V-SLC through an AUTH RESP message using an RLP SSRP tunnel. (S38).

The V-SLC transmits the received key (security key) to the V-SPC through internal communication (S39).

The H-SLC sends the SUPL TRIGGERED RESPONSE message received from the V-SLC to the SET. The SUPL TRIGGERED RESPONSE message includes a session-id, a posmethod, a V-SPC address, and a trigger parameter (trigger_params). The V-SPC address indicates the address of the V-SPC to perform the positioning function. The trigger parameter indicates trigger condition information related to a local event trigger for positioning.

For example, the trigger parameter may include trigger condition information indicating a characteristic of a local event and a specific region. The nature of the local event may indicate whether or not to move into or out of a specific area or within a specific area. The specific region may include at least one of a name, a region name, a latitude and longitude of a specific location on an administrative region.

In addition, the SUPL TRIGGER RESPONSE message may include location identifiers (area ids or location identifiers (lids)) of a region defined for a region related session (S40).

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.

Subsequently, steps S41-S51 are performed in a manner substantially similar to steps S18-S28 shown in FIG.

In FIG. 1 showing the first embodiment, when the positioning session start condition is satisfied, the SET transmits a SUPL POS INIT message to the V-SLP via the H-SLP (S19, S20) . When the positioning session start condition is satisfied at 3, the SET transmits the SUPL POS INIT message directly to the V-SPC corresponding to the V-SPC address included in the SUPL TRIGGERED RESPONSE message received at step S40.

Accordingly, as in step S43 of FIG. 3, the V-SPC directly opens a positioning session with the SET without passing through the H-SLC, and directly transmits and receives consecutive messages for position calculation to calculate the actual position of the SET.

On the other hand, as in step S21 of FIG. 1, the V-SLP opens a positioing session with the SET via the proxy H-SLP, and then transmits and receives continuous messages for position calculation with the SET via the H-SLP to actually set the SET. Calculate the correct position.

The position value of the SET calculated in step S43 is transmitted from the V-SPC to the SET, and the SET checks whether a local event has occurred based on the calculated position value of the SET. That is, the SET compares the calculated position value with the position value of the event region defined in the trigger parameter and checks whether they match each other.

Depending on whether or not a local event occurs, the SET may report the calculated position value to the H-SLC through the SUPL REPORT message transmission and may transmit the SUPL POS INIT message back to the V-SPC.

As described above, in the third embodiment of the present invention shown in FIG. 3, when the network initiates the positioning service, the V-SPC having a positioning function confirms the area-related position of the roaming SET (calculation). In this case, the H-SLC obtains the location identifiers of the regions defined for the local event trigger session from the V-SLC and provides them to the roaming SET, and the roaming SET and the V-SPC provide the H-SLP operating as a non proxy. Set up positioning sessions directly with each other and bypass the roaming SET's local position without going through it.

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

4 is a view illustrating a location associated with a location according to a fourth embodiment of the present invention. The fourth embodiment of the present invention exemplifies a case in which a roaming case, a network-initiated case, an H-SLP positioning case, and an H-SLP use a non-proxy mode. The SET (target SET) is a roaming SET roaming to the visited network to which the V-SLP belongs, and the H-SLP performs a positioning function.

The V-SLP includes a V-SPC and a V-SLC, and FIG. 4 only shows the V-SLC.

The H-SLP includes an H-SLC and an H-SPC, the H-SPC performs a positioning function, and the H-SLC uses a non-proxy mode.

Compared with the third embodiment of Fig. 3, the fourth embodiment of Fig. 4 is particularly different from that the H-SPC performs a positioning function.

Thus, when receiving a location service request associated with a local event triggered session, the H-SLC of the H-SLP sends the service request to the H-SPC and the H-SPC grants or rejects the request and then accordingly Inform the results by H-SLC.

Further, the SET nonce and key-id 2 parameters transmitted from the SET to the H-SLC in S34 of FIG. 3 are used to establish a secure session between the V-SPC and the SET performing the positioning function, but in SET S65 of FIG. The SET nonce and key-id 2 parameters sent from the H-SLC to the H-SLC are used to establish a secure session between the H-SPC and the SET performing the positiong function.

If the SUPL TRIGGERED START message is transmitted from the SET in S65, the H-SLC sends an RLP TSRLRR message to the V-SLC to request location identifiers corresponding to the region for the local event triggered session (S67).

Then, the V-SLC transmits SUPL TRIGGERED RESPONSE message information including the location identifiers to the H-SLC through the RLP TSRLRA message (S68).

The H-SLC sends the SUPL TRIGGERED RESPONSE message received from the V-SLC to the SET. The SUPL TRIGGERED RESPONSE message includes a session-id, a posmethod, an H-SPC address, and a trigger parameter (trigger_params). The H-SPC address indicates the address of the H-SPC to perform the positioning function. The trigger parameter indicates trigger condition information related to a local event trigger for positioning.

For example, the trigger parameter may include trigger condition information indicating a characteristic of a local event and a specific region. The nature of the local event may indicate whether or not to move into or out of a specific area or within a specific area. The specific region may include at least one of a name, a region name, a latitude and longitude of a specific location on an administrative region.

In addition, the SUPL TRIGGER RESPONSE message includes area identifiers (area ids or location identifiers (lids)) defined for the region related session (S69).

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.

Thereafter, steps S70-S83 are performed in a manner substantially similar to steps S41-S51 shown in FIG. 3, and only the differences will be described below.

In FIG. 3 showing the third embodiment, when the positioning session start condition is satisfied, the SET transmits a SUPL POS INIT message directly to the V-SPC (S42), but the positioning session starts in FIG. 4 showing the fourth embodiment. When the condition is satisfied, the SET transmits a SUPL POS INIT message to the H-SPC corresponding to the H-SPC address included in the SUPL TRIGGERED RESPONSE message received in step S69.

Accordingly, the V-SPC of FIG. 3 converts the current position identifier lid included in the received SUPL POS INIT message into a position estimate value. However, since the H-SPC of FIG. 4 cannot directly convert the current position identifier (lid) included in the received SUPL POS INIT message into a position estimation value, the H-SPC requests the V-SLC through steps S72-S75 to correspond to the lid. The position estimate can be obtained.

In FIG. 4, the H-SPC selectively performs a procedure (positioning procedure) for calculating the actual position of the SET depending on whether the converted position estimate value satisfies QoP (S76, S77). Based on the calculated position value of the SET, the SET checks whether a local event has occurred (S78) and transmits a corresponding message to the H-SLC (S79).

As described above, in the fourth embodiment of the present invention shown in FIG. 4 , when the network initiates the positioning service, the H-SPC having a positioning function confirms the area-related position of the roaming SET (calculation). H-SLC obtains local location identifiers used for local event trigger sessions from V-SLC and provides them to roaming SET. Roaming SET and H-SPC do not go through H-SLC operating as non proxy. Instead of establishing a positioining session with each other directly, we compute the roaming SET's local relative location.

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.

Claims (50)

Transmitting, by the first server, a session initialization message for initiating a trigger session to a roaming terminal; Receiving a session start message from the roaming terminal; Requesting and obtaining location identifiers of a location related to a location related location from a second server; Transmitting a session response message including at least a trigger parameter to the roaming terminal; Receiving a positioning initialization message from the roaming terminal and transmitting the received positioning initialization message to the second server; Receiving the calculated position value of the roaming terminal from the second server and transmitting the calculated position value to the roaming terminal; And providing the agent when the calculated position value is transmitted from the roaming terminal. The method of claim 1, And the first server transmits the local location identifiers obtained from the second server to the roaming terminal through the session response message. The method of claim 1, wherein the session initialization message, And at least trigger type information. The method of claim 3, wherein And the trigger type information indicates a local event trigger type. The method of claim 1, wherein the trigger parameter, And at least a location characteristic of a location related to location-related location determination or a location value of an event area related to location-related location location. The method of claim 1, wherein the local location identifiers are: Corresponds to any one of cell IDs, mobile country code (MCC), mobile network code (MCC), location area code (LAC), and primary scrambling code number (LAC) belonging to an event region related to location-related location identification. Location-related method for determining the location of a roaming terminal in a mobile communication system. The method of claim 1, And wherein the first server uses a proxy mode and the second server has a location checking function. The method of claim 1, Receiving a request message for requesting a location-related location service from the agent to the first server; and providing a location-related location checking method for a roaming terminal in a mobile communication system. The method of claim 1, And wherein the first server is an H-SLP and the second server is a V-SLP. Transmitting, by the first server, a session initialization message for initiating a trigger session to a roaming terminal; Receiving a session start message from the roaming terminal; Requesting and obtaining location identifiers of a location related to location-related location confirmation from a second server; Transmitting a session response message including at least a trigger parameter to the roaming terminal; Receiving a positioning initialization message from the roaming terminal; Transmitting, by the first server, the calculated position value of the roaming terminal to the roaming terminal by performing a positioning procedure with the roaming terminal; And providing the agent to the agent when the calculated position value is transmitted from the roaming terminal. The method of claim 10, And the first server transmits the area location identifiers obtained from the second server to the roaming terminal through the session response message. The method of claim 10, wherein the session initialization message, And at least trigger type information. The method of claim 12, And the trigger type information indicates a local event trigger type. The method of claim 10, wherein the trigger parameter, And at least a location characteristic of a location related to location-related location determination or a location value of an event area related to location-related location location. The method of claim 10, wherein the local location identifiers are: Corresponds to any one of cell IDs, mobile country code (MCC), mobile network code (MCC), location area code (LAC), and primary scrambling code number (LAC) belonging to an event region related to location-related location identification. Location-related method for determining the location of a roaming terminal in a mobile communication system. The method of claim 10, And the first server uses a proxy mode and has a location checking function for calculating the location of the roaming terminal. The method of claim 10, Receiving a request message for requesting a location-related location service from the agent to the first server; and providing a location-related location checking method for a roaming terminal in a mobile communication system. Receiving, by a roaming terminal, a session initialization message for initializing a trigger session from a first server; Sending a session start message to the first server; Receiving from the first server a session response message comprising at least a trigger parameter; Sending a location initialization initialization message to the first server; Receiving a measured position value of the roaming terminal from the first server; Checking whether a local event trigger condition is satisfied by comparing the received measured position value with a position value included in the trigger parameter; And when the local event trigger condition is satisfied, the roaming terminal transmitting the measured position value to the first server. The method of claim 18, wherein the roaming terminal, And receiving location identifiers of a region related to a location-related location from the first server through the session response message. The method of claim 19, And the area location identifiers are obtained from the second server by the first server. 20. The system of claim 19, wherein the local location identifiers are: Any of the IDs of cells belonging to an area (event area) related to location-related positioning, a mobile country code (MCC), a mobile network code (MNC), a location area code (LAC), and a primary scrambling code number (LAC) Location-related location checking method of a roaming terminal in a mobile communication system, characterized in that corresponding to one. The method of claim 19, wherein the roaming terminal is When the location information is satisfied by comparing the currently located location location identifier with the received location location identifier, the location-related location confirmation of the roaming terminal in the mobile communication system, characterized in that for transmitting the location initialization initialization message to the first server. Way. 20. The method of claim 19, wherein the positioning initialization message, If the trigger condition included in the trigger parameter indicates a case in which the roaming terminal enters or is within a specific region, at least one of the received local location identifiers matches the current local location identifier of the roaming terminal. If so, the region-related positioning method of the roaming terminal in a mobile communication system, characterized in that transmitted. 20. The method of claim 19, wherein the positioning initialization message, And when the trigger condition included in the trigger parameter indicates a case in which the terminal comes out of a specific region, when the received region location identifiers and the current region location identifier of the roaming terminal do not match, the mobile communication system is transmitted. Location-related location checking method of roaming terminal in. 19. The method of claim 18, wherein the session initialization message includes at least trigger type information. 27. The method of claim 25, wherein the trigger type information indicates a local event trigger type. The method of claim 18, wherein the trigger parameter, And at least a location characteristic of a location related to location-related location confirmation or a location value of a location (event area) related to the location-related location location. The method of claim 18, And the first server uses a proxy mode. Transmitting, by the first server, a session initiation message to the roaming terminal to initialize the trigger session; Receiving a session start message from the roaming terminal, the session start message comprising at least parameters related to secure session establishment; Requesting and obtaining, by the first server, location identifiers of regions related to location-related location confirmation from a third server through a second server; Transmitting a session response message including at least a trigger parameter and an address of the third server to the roaming terminal; And receiving a calculated position value for the roaming terminal from the roaming terminal and providing it to an agent. 30. The system of claim 29, wherein the first server is And transmitting the obtained area location identifiers to the roaming terminal through the session response message. 30. The method of claim 29, wherein the session initialization message is And a region type trigger information indicating a region event trigger type. The method of claim 29, wherein the trigger parameter, And at least a location characteristic of a location related to location-related location confirmation or a location value of a location (event area) related to the location-related location location. The method of claim 29, Receiving a request message for requesting a location-related location service from the agent to the first server; and wherein the location-related location checking method of a roaming terminal in a mobile communication system. The method of claim 29, The secure session is established between the roaming terminal and the third server by using the parameters related to the secure session setup, wherein the secure session is a session for a location checking procedure between the roaming terminal and the third server. A method for determining the location of a roaming terminal in a communication system. 30. The roaming terminal location of claim 29, wherein the first server is an H-SLC, the second server is a V-SLC, and the third server is a V-SPC. checking way. The method of claim 29, And the first server uses a non proxy mode and the third server performs a positioning function for calculating the location of the roaming terminal. Receiving, by a roaming terminal, a session initialization message for initializing a trigger session from a first server; Sending a session start message to the first server, the session start message comprising at least parameters associated with a secure session; Receiving from the first server a session response message comprising at least a trigger parameter and an address of a second server; Transmitting, by the roaming terminal, a positioning initialization message to the second server; Performing a location procedure by the roaming terminal establishing a secure session with the second server using the parameters related to the secure session; Receiving a measured position value of the roaming terminal from the second server; Checking, by the roaming terminal, whether a local event trigger condition is satisfied by comparing the received measured position value with a position value included in the trigger parameter; And when the local event trigger condition is satisfied, the roaming terminal providing the measured position value to the first server. The method of claim 37, wherein the roaming terminal, And receiving location identifiers of a location related to a location-related location confirmation from the first server through the session response message. The method of claim 38, wherein the local location identifiers are: And the first server obtains the roaming terminal from the second server via a third server and provides the roaming terminal to the roaming terminal. 40. The location of a roaming terminal in a mobile communication system according to claim 39, wherein the first server is an H-SLC, the second server is a V-SPC, and the third server is a V-SLC. checking way. The method of claim 38, wherein the local location identifiers are: And the first server obtains the third server from the third server and provides the roaming terminal to the roaming terminal. 42. The location of a roaming terminal in a mobile communication system according to claim 41, wherein the first server is an H-SLC, the second server is an H-SPC, and the third server is a V-SLC. checking way. The method of claim 38, The area of the roaming terminal in the mobile communication system, characterized in that the roaming terminal transmits the positioning initialization message to the second server when the condition information is satisfied by comparing the currently located local location identifier with the received local location identifier. How to check the relevant location. The method of claim 37, wherein the session initialization message, And a trigger type information indicating local event trigger type information. Transmitting, by the first server, a session initiation message to the roaming terminal to initialize the trigger session; Receiving a session start message from the roaming terminal, the session start message comprising at least parameters related to secure session establishment; Requesting and obtaining, by the first server, location identifiers of a region related to a location-related location check from a second server; Sending, by the first server, a session response message including at least a trigger parameter and an address of a third server to the roaming terminal; And receiving a calculated position value for the roaming terminal from the roaming terminal and providing it to an agent. 46. The system of claim 45, wherein the first server is And transmitting the obtained area location identifiers to the roaming terminal through the session response message. 46. The method of claim 45, wherein the session initialization message is A method for determining a location related to a roaming terminal in a mobile communication system, comprising trigger type information indicating a local event trigger type. The method of claim 45, Receiving a request message for requesting a location-related location service from the agent to the first server; and wherein the location-related location checking method of a roaming terminal in a mobile communication system. The method of claim 45, The secure session is established between the roaming terminal and the third server by using the parameters related to the secure session setup, wherein the secure session is a session for a location checking procedure between the roaming terminal and the third server. A method for determining the location of a roaming terminal in a communication system. 46. The roaming location of claim 45, wherein the first server is an H-SLC, the second server is a V-SLC, and the third server is an H-SPC. checking way.

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