KR20070039855A - Location service providing system and method for providing triggered location request service using a previously calculated position thereof - Google Patents

Abstract

The present invention provides a conditional repetitive location service providing method using a location calculated from a location service providing system and a location service providing system, wherein a location server transmits a previous location value or location of a target terminal according to a location service request from a location service requester. When the SULT INIT message including the supplementary information is transmitted to the target terminal, the target terminal receives the position service request initial message and transmits the previous position value or position assistance information of the target terminal of the location server and the target terminal. It is determined whether the previously stored location value or location assistance information is reused, and if reusable, the location service requester is provided to the location service requester by reusing the previous location value or location assistance information of the target terminal. Therefore, the present invention can reduce the unnecessary position calculation process when providing a conditional repetitive position request service, and it is possible to provide an efficient conditional repetitive position request service since it is possible to determine and report the occurrence of several events with one position calculation process. .

Location service providing system, conditional repeat location service, location server, target terminal, previously calculated location value or location assistance information

Description

LOCATION SERVICE PROVIDING SYSTEM AND METHOD FOR PROVIDING TRIGGERED LOCATION REQUEST SERVICE USING A PREVIOUSLY CALCULATED POSITION THEREOF}

1 is a flowchart illustrating a method for providing conditional repetitive location service according to the related art.

2 is a block diagram of a location service providing system according to an exemplary embodiment of the present invention.

3 is a flowchart illustrating a method of performing conditional location service using a previously calculated location in a location service providing system according to a first embodiment of the present invention.

4 is a flowchart illustrating operations of a target terminal according to the first embodiment of the present disclosure.

5 is a flowchart illustrating a method of performing conditional location service using a previously calculated location in a location service providing system according to a second embodiment of the present invention.

6 is a diagram illustrating a previous position value or location assistance information transmission request parameter according to an embodiment of the present invention;

7 is a diagram illustrating a previous position value or position assistance information condition parameter according to an embodiment of the present invention;

8 is a flowchart illustrating operations of a target terminal according to a second embodiment of the present disclosure.

The present invention relates to a location service providing system and method, and more particularly to a location service providing system and method for providing conditional repetitive location service.

As demand for various location-related services based on location increases, various location services using the location of a mobile terminal are provided, and development for expansion of location services has been made. And the expansion of location services is expected to be the basis of 4G communication service.

Recently, a conditional repeated location service (Deferred location request service or Triggered location request service) has been provided as a location service. Conditional repetitive location service is a service that provides the location service requester with the fact that the event occurs when the location value of the terminal meets a predetermined condition while setting the condition (Criteria) and calculating the location value of the terminal periodically or aperiodically. to be.

Hereinafter, a conventional conditional repeating location service information providing method will be described. FIG. 1 is a flowchart illustrating a conditional repeating location service providing method according to the prior art. Referring to FIG. 1, a location service requester (Secure User Plane Location AGENT, hereinafter referred to as 'SUPL AGENT') 10 uses a MLP TLRR (Mobile Location Protocol Triggered Location Reporting Request) message to provide a location server (Home-SUPL Location). Request conditional repetitive location service from Platform (hereinafter referred to as 'H-SLP') 20.

If the MLP TLRR message is received from the SUPL AGENT 10, the H-SLP 20 determines routing information of the corresponding target terminal 30 in step 104. That is, the H-SLP 20 determines whether the target terminal 30 is roaming, and determines whether the target terminal 30 uses SUPL.

If the target set 30 is non-roaming and is using SUPL, that is, location service, the H-SLP 20 transmits a SUPL INIT (Initiation) message to the target terminal 30 in step 106 to conditionalize it. Start the recursive location service. At this time, the SUPL INIT message includes a SESSION_ID, which is an ID for distinguishing a message exchange between the H-SLP 20 and the target terminal 30, a POS (Position) METHOD indicating a location calculation method, and a condition (Criteria) indicating an event occurrence determination condition. Included.

When the target terminal 30 receives the SUPL INIT message from the H-SLP 20, the target terminal 30 checks whether it is currently connected to the packet data network in step 108, and if not, attempts to connect.

After performing the network connection with the H-SLP 20, the target terminal 30 transmits a SUPL POS INIT message to the H-SLP 200 in step 110. At this time, the SUPL POS INIT message includes the SESSION_ID, which is an ID for distinguishing the message exchange between the H-SLP 20 and the target terminal 30, and the LOCATION_ID, NEWTORK_ID, SYSTEM_ID, and location calculation capability indicating the network information in which the target terminal 300 exists. Contains a SET_CAPABILITY indicating.

When the SUPL POS INIT message is received from the target terminal 30, the H-SLP 20 determines the position calculation method (POS METHOD) by comparing SET_CAPABILITY included in the SUPL POS INIT message with its own location measurement capability. do. The H-SLP 20 and the target terminal 30 perform position calculation according to the determined position calculation method.

After performing the position calculation, the target terminal 30 compares its position value with the event occurrence condition (CRITERIA) included in the SUPL INIT message, and determines whether the event requested by the SUPL AGENT 10 has occurred. If the event occurs as a result of the event occurrence determination, the target terminal 30 reports the event occurrence result to the H-SLP 20 using the SUPL DEFERRED_REPORT message in step 114. At this time, the SUPL DEFFERRED_REPORT message includes SESSION_ID and CLIENT_ID, and includes POS_ESTIMATE indicating the calculated position value of the target terminal 30.

When the H-SLP 20 receives the SUPL DEFERRED REPORT message, the H-SLP 20 reports an event occurrence to the SUPL AGENT 10 using the MLP TLR message in step 116. In this case, the MLP TLR message includes a req_id for identifying a conditional repetitive location service and a TRL_POS indicating a calculated terminal location value.

After reporting the event occurrence, if the conditional repetitive location service is ongoing, the target terminal 30 uses the event occurrence condition included in the SUPL INIT message in step 117 to send a SUPL DEFERRED START message for the next position calculation again. Send to (20) to request to start a new positioning procedure (SITIONING PROCEDURE).

When the H-SLP 20 receives the SUPL DEFERRED START message from the target terminal 30, the H-SLP 20 performs a location calculation process of the next target terminal 30 in step 118. The target terminal 30 determines whether the event requested by the SUPL AGENT 10 has occurred by comparing its position value with the event occurrence condition included in the SUPL INIT message.

If an event occurs, the target terminal 30 reports the event occurrence result to the H-SLP 20 using the SUPL DEFERRED_REPORT message in step 120. When the H-SLP 20 receives the SUPL DEFERRED REPORT message, the H-SLP 20 reports the occurrence of the event to the SUPL AGENT 10 using the MLP TLR message in step 122. The target terminal 30 and the H-SLP 20 repeat steps 117 to 122 until a predetermined end point is reached. When the predetermined end point arrives, the conditional repeating location service information is provided.

However, in the conventional conditional repeating location service providing method as described above, the location value of the terminal is first calculated, and then the event occurrence requested by the location service requester is determined based on the value and the event is generated. Repeat the reporting process.

Therefore, according to the conventional method as described above, since the position value of the terminal required for each occurrence of an event must be newly calculated, the process of repeatedly calculating the terminal position has a complicated problem. In addition, in the conventional method, even if the calculated position value of the terminal or the position assistance information for calculating the position value can be reused for the next event occurrence determination, it is inefficient because it is used only once for the corresponding event occurrence determination.

Accordingly, an object of the present invention is to provide a method for providing a conditional repetitive location service by reusing a previously calculated location value or location information without having to newly calculate a location value or location assistance information of a terminal required every time an event occurs. The present invention provides a location service providing system and a location service providing method.

It is also an object of the present invention to provide a location service providing system and conditional repeating location service providing method that can provide a location service for a location before a location service request start point using previously calculated location values or location assistance information. There is.

In order to achieve the above object, the present invention provides a location service providing system comprising: a condition for requesting transmission of a previous location value or location assistance information according to a location service request from a location service requester (QoP, Time stamp of the a position for transmitting a position service request initial message (SUPL INIT) including a position estimate, a positioning method) and an assistant's previous position value or position assistance information or assistant data necessary for calculating the position value or position assistance information When the server and the location service request initial message are received, a plurality of previous location values or location assistance information including previous location values or location assistance information of the terminal of the location server and previous location values or location assistance information of the internally stored terminal are displayed. If present, each previous location value or location assistance When determining whether to re-use, and reusable includes target UE to provide location information to the location service requester through the reuse of the previous location value or the location assistance information.

The present invention also provides a conditional repetition request service providing method using a previous location value or location assistance information of a terminal in a location service providing system, wherein the location server requests a terminal according to a previous location value or location assistance service request from a location service requester. Transmitting a location service request initial message (SUPL INIT) including a previous location value or location assistance to the target terminal, and receiving the location service request initial message by the target terminal, or using the previous location value of the terminal of the location server; Determining whether to reuse the location assistance information and the previous location value or location assistance information of the internally stored terminal, and if the reuse is possible, reusing the previous location value or location assistance information to provide location information to the location service requester.

The present invention also provides a location service providing system, comprising a QoP and a previous location value or location assistance condition according to a previous location value or location assistance information required by the location service requester in response to a location service request from a location service requester. A location server that transmits a location service request initial message (SUPL INIT), and when the location service request initial message is received, the location service request initial message is included in the location service request initial message among a plurality of previous location values or location assistant information; A target terminal that selects and provides a previous location value or location assistance information that satisfies a selection condition by comparing a QoP according to the previous location value or location assistance information with a criteria or condition of the previous location value or location assistance information It includes.

The present invention also provides a conditional repetitive location service providing method using a location previously calculated in a location service providing system, comprising: QoP and previous location value or location assistance information according to a previous location value or location assistance information required by a location service requester. Receiving a location service request initial message (SUPL INIT) including a selection condition of, and according to the previous location value or location assistance information included in the location service request initial message of a plurality of previous location values or location assistance information Selecting a previous position value satisfying a QoP and a previous position value or position assistance information condition, and providing the selected previous position value or position assistance information;

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the same components in the drawings are represented by the same reference numerals and symbols as much as possible even if shown in different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

2 is a block diagram of a location service providing system according to an exemplary embodiment of the present invention. 2, a location service providing system according to an exemplary embodiment of the present invention includes a location related service requester (SUPL AGENT) 100, a home location server (H-SLP: Home-SUPL Location Platform) 200, and a target terminal. (Target SET) 300, a mobile communication network 150.

The SUPL AGENT 100 is a service access pointer that connects to the H-SLP 200 supporting SUPL in order to request the location of the target terminal 300. The SUPL AGENT 100 may request a conditional repetitive location request service or a triggered location request service, and when requesting a conditional repetitive location service, a condition regarding when an event occurs occurs. Made and delivered to the H-SLP (200). When the SUPL AGENT 100 requests a previous position value or position assistance information, the SUPL AGENT 100 also includes a criteria or condition for the previous position value or position assistance information in the service request message.

Here, the location assistance information refers to additional information for the target terminal 300 to calculate its own location value. That is, for example, when the target terminal 300 calculates its own position value using a global positioning system (GPS), the target terminal 300 orbit information of GPS satellites suitable for receiving a GPS signal And so on. The selection condition for the previous position value or position assistance information may include a QoP of the previous position value or position assistance information, a time period in which the previous position value or position assistance information is calculated using a time stamp of the previous position value or position assistance information, At least one of a positioning method used for calculating a position value or position assistance information.

The H-SLP 200 calculates a location value or location assistance information of the terminal using SUPL according to a conditional repetitive location service request from the SUPL AGENT 100. When the conditional repetitive location service is requested from the SUPL AGENT 100, the H-SLP 200 includes a parameter indicating that the conditional repetitive location service request is included in the SUPL INIT message and transmits the parameter to the target terminal 300 to the target terminal 300. Allow 300 to know which service is started. In addition, when there is a condition for the previous position value or the position assistance information from the SUPL AGENT 100, the previous position value or the position assistance information request condition is transmitted to the target terminal 300. If the previous location value or the location assistance information request condition sent by the SUPL agent 100 is insufficient or there is an additional item, the H-SLP 200 adds the previous location value or location assistance information request condition to the target terminal 300. ) Can be delivered.

For example, the SUPL AGENT 100 requests only the previous position value, but in order to calculate the previous position value, the H-SLP 200 may request the previous terminal assistance information from the target terminal 300. This is because the target terminal 300 may have previously calculated location assistance information instead of storing the previous location value. If the terminal has previous location assistance information, the H-SLP 200 may request it from the target terminal 300.

In another embodiment, if the H-SLP 200 stores and stores the previous location assistance information of the target terminal 300, the H-SLP 200 may transmit the information to the target terminal 300. In addition, the H-SLP 200 calculates the position of the target target 300 by itself, or provides location assistance information, that is, A-GPS (Assistant Global Positioning System) information and orbit information of a satellite that can currently communicate with the target terminal ( Transfer to 300 so that the target terminal 300 can calculate the location. In addition, the H-SLP 200 stores the calculated position value or position assistance information, and transfers it according to a selection condition such as a previous position value of the target terminal 300 or QoP (Quality Of Position) of the position assistance information when determining an event occurrence. Allow location values or location assistance information to be reused.

The target terminal 300 is a terminal that is a target of position calculation. The target terminal 300 uses SUPL protocol, exchanges information necessary for position measurement with the H-SLP 200 using SUPL, and performs position calculation. In particular, the target terminal 300 stores the calculated position value or position assistance information, and determines whether to reuse according to selection conditions such as QoP of the previous position value or position assistance information when calculating the next position. At this time, the target terminal 300 has a QoP of the previous location value or location assistance information, which is provided by the QoP or H-SLP 200 or the target terminal 300 requested by the location service requester (eg, SUPL AGENT (100)). In comparison with the QoP, it is determined whether the previous location value or the previous location assistance information currently stored in the target terminal 300 is reused.

In addition, the target terminal 300 may store a plurality of previous location values or previous location assistance information. In this case, the target terminal 300 may include the plurality of previous location values according to a selection condition of a previous location value or previous location assistance information sent by a location service requester (eg, SUPL Agent 100) or the H-SLP 200. Or select any one of the previous location assistance information. The selection condition of the previous position value or the previous position assistance information may include at least one of QoP, time stamp, time period, and position methods of each of the plurality of previous position values or position assistance information previously stored in the target terminal 300. It may be about one.

In this case, when the terminal has the previous location assistance information instead of the previous location value, and receives the request to transmit the previous location assistance information, the condition comparison is the same as the condition comparison that was performed when the previous location value was requested. Select location assistance.

The H-SLP 200 or the target terminal 300 determines the position value or the position assistance information of the target terminal 300 previously calculated as a result of determining whether to reuse the previous position value or the position assistance information previously stored in the target terminal 300. When it is confirmed that it can be reused, it is determined whether an event occurs with a previously calculated previous position value or previous position assistance information without performing a process of calculating a new position value or position assistance information.

The present invention is applicable not only to a periodic location service that periodically provides a location value, but also to a location service that provides a location value when a specific event occurs.

The H-SLP 200 or the target terminal 300 newly calculates the position of the target terminal 300 only when the previously calculated position value or location assistance information of the target terminal 300 cannot be reused. In this case, calculating the position of the target terminal 300 includes the case where the H-SLP 200 calculates the position of the target terminal 300 (MS-Assisted method) and the target terminal 300 directly determines its own position. There may be an MS-based method.

First, when the H-SLP 200 calculates the location of the target terminal 300, that is, the MS-Assisted method, network information necessary for the target terminal 300 to calculate its location to the H-SLP 200. Send it. The network information may be cell information in which the target terminal 300 is currently located, or location area information created by a plurality of cells. At this time, if the A-GPS function is supported, the target terminal 300 calculates a value of TDOA (Time Difference of Arrival) in a communication process with a satellite that can communicate with itself and sends it to the H-SLP 200.

In addition, when the target terminal 300 directly calculates its own location, that is, in the case of the MS-based method, the target terminal 300 receives orbit information of satellites that can communicate at the current location from the H-SLP 200. Calculates the TDOA and then calculates its own position value or location assistance information. When the location measurement is completed, the target terminal 300 compares the event condition received from the H-SLP 200 with its own location value or location assistance information and determines whether the event has occurred. If the event occurs, the target terminal 300 reports the fact to the H-SLP 200.

The mobile communication network 150 is a communication network for wireless transmission and reception between the H-SLP 200 and the target terminal 300, and may be configured as a Global System for Mobile communication (GSM) or Universal Mobile Telecommunication System (UMTS) network. And a core network (152), a radio network controller (RNC) 154, and a node B 156. The core network 152 manages the information of the target terminals 300 and performs mobility management, session management, and call management functions. The RNC 154 transfers data from the H-SLP 200 transmitted from the core network 152 to the target terminal 300 through the NodeB 156, and receives data from the target terminal 300. Transfer to the H-SLP 200. The node B 156 transmits and receives a radio signal with the target terminal 300.

Therefore, the location service providing system according to the embodiment of the present invention as described above can reuse the calculated position value or position assistance information or transfer assistance information of the previous target terminal 300 to reduce unnecessary position calculation process, and It is possible to determine the occurrence of multiple events by calculating the position of.

Hereinafter, a method of providing conditional repetitive location service using the location value or location assistance information of the target terminal 300 previously calculated in the location service providing system as described above will be described in detail.

In the embodiment of the present invention, a case in which the SUPL AGENT 100 requests a deferred location request service or a triggered location request service will be described. In this case, the SUPL AGENT 100 presents the H-SLP 200 with specific conditions for the use of the previous location value or location assistance information, and the H-SPL 200 and the target terminal 300 provide the previous location value or location assistance. Use information. At this time, the target terminal 300 compares the previously stored previous position value or position assistance information with the condition required by the SUPL AGENT 100, and if the previously stored previous position value or position assistance information is met The occurrence of the event is transmitted to the SUPL AGENT 100. (For event triggered service)

And unlike the above, in the case of the periodic location information service (Periodic Triggered service) that provides the location periodically, the target terminal 300 is periodically calculated using the previous location value or the previous location assistance information The location value is transmitted to the SUPL AGENT (100).

In addition, the embodiment of the present invention will be described on the assumption of a network initiated case of the triggered location service. It also includes a network initiated case in the immediate location service. In addition, the SET initiated case also uses the previous position value or position assistance information, which is the core of the present invention, and at this time, the SUPL Agent 100 presents a condition for the previous position value or position assistance information and has the target terminal ( 300) The content of selecting the previous location value or location assistance information corresponding to this condition may be applied in the immediate location service.

In the network initiated case, the target terminal 300 exists in an area managed by the H-SLP 200, and the H-SLP 200 receives the request of the SUPL AGENT 100 to calculate the position of the target terminal 300. This is the case where the value is transmitted to SUPL AGENT (100). In an exemplary embodiment of the present invention, a case of a network initiated case will be described. However, the present invention is based on the conditional repetitive location service request from the target terminal 300. It is also possible to apply SET initiated case. In addition, the embodiment of the present invention describes a case in which the target terminal 300 determines the occurrence of the event. However, of course, the H-SLP 200 may determine the occurrence of the event.

3 is a flowchart illustrating a method of performing conditional location service using a previously calculated location in a location service providing system according to a first embodiment of the present invention.

Referring to FIG. 3, the SUPL Agent 100 requests a Deferred Location Request Service or Triggered Location Request Service (H-SLP) 200 using a Mobile Location Protocol (MLP). At this time, the MLP TLRR (Mobile Location Protocol Triggered Location Reporting Request) message is delivered from the SUPL AGENT 100 to the H-SLP 200.

MLP TLRR message includes MSID, CLIENT_ID, START_TIME, STOP_TIME, TLRR_EVENT, Previous data mode, Previous retrival mode, Condition of previous Position. The MSID indicates a unique ID of the target terminal 300 to be the location calculation target. CLIENT_ID (represents a unique ID of SUPL AGENT 100. START_TIME represents a service start time. STOP_TIME represents a service end time. TLRR_EVENT (TRIGGERED LOCATION REPORTING REQUEST_EVENT) represents a location reporting request event. TLRR_EVENT represents TARGET_AREA, Contains CHANGE_AREA_STATE TARGET_AREA indicates the target area CHANGE_AREA_STATE indicates the state of the terminal CHANGE_AREA_STATE includes ARRIVAL, LEAVING and STAY ARRIVAL indicates whether the target terminal 300 has arrived in the target area Indicates whether the target terminal 300 is leaving the target area STAY indicates whether the target terminal 300 exists in the target area Previous data mode requires a previous position estimate or previous position assistance information (Assistant data) is required This parameter can be sent directly by SUPL Agent (100). And, when the H-SLP (200) sends a condition that the SUPL Agent (100) requested to the target terminal 300, and can be a parameter to be added.

For example, when the SUPL Agent 100 requests the previous location value or location assistance information from the H-SLP 200, the H-SLP 200 requests the previous assistance information in a message sent to the target terminal 300. Can send a message that says In this case, the previous data mode may be used to indicate whether the target terminal 300 requests the previous location value or the previous location assistance information. The reason for requesting the previous location assistance information is that the H-SLP 200 can calculate the location value or location assistance information with the location assistance information sent from the target terminal 300. (E.g. A-GPS SET assisted mode)

 Previous retrieval mode indicates whether the SUPL Agent 100 requests at least one of the previous position value or the position assistance information of the target terminal 300, or the current position value or the position assistance information. That is, the previous retrieval mode indicates whether the SUPL Agent 100 requests only the previous location value of the target terminal 300, only the previous location assistance information, or requests both the previous location value and the previous location assistance information.

The current Condition of previous Position indicates a selection condition of a previous position value or position assistance information. The selection condition of the previous location value or location assistance information is the QoP of the previous location value or location assistance information, the time stamp of the previous location value or location assistance information, the time period of the previous location value or location assistance information, the previous location value or location assistance information. The calculated position method may be included.

That is, Condition of previous Position is a condition used to select a previous position value or position assistance information or previous assistance information. This condition can be used to calculate the location value or location assistance information between the Max-Location-Age (702), Horizontal Accuracy (704), Vertical Accuracy (706), Delay (708), Positioning Method, Protocol, location calculation method, etc., for example, SET based mode or SET assisted mode, for example, RRLP, IS-801, etc.), wherein the Time Stamp indicates the previous position value or the position assistance information or the time when the previous assistance information was created. The TIME Limitation or Time Period indicates a period during which the previous position value or the position assistance information and the previous assistance information can be used.

And, the QOP indicates the accuracy of the previous position value or the position assistance information or auxiliary information. When the SUPL AGENT 100 requests a previous position value or position assistance information with a Condition of previous Position, the SUPL AGENT 100 may present the selection condition, and the target terminal 300 corresponds to the stored previous position value or position assistance information. It selects and transmits that meets the selection condition.

When the M-LP TLRR message is received from the SUPL AGENT 100, the H-SLP 200 determines whether a previous position value or previous assistant data of the target terminal 300 is stored in step 304. Check it. At this time, the H-SLP 200 distinguishes the target terminal 300 by using the MSID included in the MLP TLRR message. If there is a previous position value or position assistance information, the H-SLP 200 compares the level of QoP requested by SUPL AGENT 100 with a Condition of previous Position including the QoP of the previous position value or position assistance information. Determine whether to reuse the location value or location assistance information. If reuse is possible, the previous location value or location assistance information is transmitted to the target terminal 300.

Alternatively, when the previous position value or position assistance information is stored, the H-SLP 200 may transmit the previous position value or position assistance information to the target terminal 300 immediately without checking a condition using a Condition of previous Position. Of course.

In operation 306, the H-SLP 200 sets up routing information of the target terminal 300. That is, it determines whether the target terminal 300 is roaming, determines whether the target terminal 300 uses SUPL, and sets up routing information accordingly. In the embodiment of the present invention, it is assumed that the target terminal 300 is non-roaming and can perform location calculation using SUPL.

After the routing information is set up, the H-SLP 200 transmits a SUPL INIT message to the target terminal 300 in step 308 to start the conditional repetition service. At this time, if the H-SLP 200 has a previous position value or position assistance information and can reuse it, the H-SLP 200 includes the previous position value or previous position assistance information in the SUPL INIT message. Alternatively, the H-SLP 200 may transmit a previous location value or location assistance information to the target terminal 300 without determining whether to reuse or not with a condition. In addition, when there is a Condition of previous Position including the QoP requested by the SUPL AGENT 100, the QoP may be included in the SUPL INIT message and transmitted.

SUPL INTI message includes Previous data mode, position retrival mode and Condition of previous Position, which received SESSION_ID, SLP_MODE, POS METHOD, CRITERIA, and SERVICE_TYPE from SUPL Agent (100). If a value (Previous position) or previous position assistant (previous assistant) is included, and there is a QoP required by SUPL AGENT 100, the QoP is included.

SESSION_ID represents an ID for distinguishing a message exchange between the H-SLP 200 and the target terminal 300. SLP_MODE indicates whether the H-SLP 200 is divided into a location calculation server and a message management server. When the location calculation server and the message management server are integrated into one H-SLP 200 may be represented as PROXY_MODE, and when the location calculation server and the message management server are separated, they may be represented as NON_PROXY_MODE. POS METHOD (= POSITIOING METHOD) indicates a location calculation method used by the H-SLP 200 and the target terminal 300 to calculate a location. For example, a method such as RRLP [RADIO RESOURCE LCS PROTOCOL] in GSM network, RRC [RADIO RESOURCE CONTROL PROTOCOL] in WCDMA network, IS-80, SERVICE_TYPE (IMMEDIATE REQEUST SERVICE or DEFERRED REQEUST SERVICE) may be used in CDMA network.

The condition Criteria represents a condition for determining whether an EVENT occurs from the H-SLP 200 to the target terminal 300. Here, the condition includes TLRR_EVENT, INTEVAL, STOP_TIME, and START_TIME. TLRR_EVENT may include TARGET_AREA and CHANGE_AREA_STATE. Where TARGET_AREA represents the target area. HANGE_AREA_STATE indicates the state of the terminal. In addition, INTEVAL represents a period for performing a positioning procedure between the H-SLP 200 and the target terminal 300. START_TIME is a parameter indicating a service start time. STOP_TIME 78 indicates a service end time.

When the target terminal 300 receives the SUPL INIT message from the H-SLP 200, the target terminal 300 checks a previous position value or location assistance information in step 310. In this case, the location value or location assistance information may be received by the target terminal 300 through the SUPL INIT message from the H-SLP 200, and the previous location value or location previously stored by the target terminal 300. It may be auxiliary information. Therefore, the target terminal 300 checks whether the received SUPL INIT message includes the previous location value or location assistance information or the previous assistance information, and checks whether the target terminal 300 previously stored the previous location value or location assistance information. do.

In operation 312, the target terminal 300 determines whether to reuse the previous location value or location assistance information. That is, when the target terminal 300 has a previously calculated position value or position assistance information, the target terminal 300 stores the target terminal 300 using a condition of previous position including a QoP requested by the SUPL AGENT 100. The previous position value or position assistance information is selected according to the condition (for example, the QoP requested by the SUPL AGENT 100) from the H-SLP 200 or the SULP AGENT 100.

At this time, if the target terminal 300 has the previous position value or position assistance information received from the H-SLP 200 and the previous position value or position assistance information stored therein at the same time, Based on at least one of QoP, Time stamp, Time limitation, and Velocity, it selects one that meets the above-mentioned condition, that is, Condition of previous Position. It is then determined whether to reuse the selected position value or position assistance information. In operation 314, the target terminal 300 attempts to connect to the data network. That is, the target terminal 300 checks whether it is connected to the packet data network, and if not, attempts to connect. At this time, the target terminal 300 determines whether it is PROXY_MODE or NON_PROXY_MODE by looking at the SLP_MODE 62 parameter included in the received SUPL INIT message. In the case of PROXY_MODE, the target terminal 300 performs the connection through the H-SLP 200 and the Internet Protocol (IP).

After performing the connection through the H-SLP 200 and the IP, the target terminal 300, if the reuse of the previous location value or location assistance information is permitted according to the determination result of the reuse of the previous location value or location assistance information or assistance information. The occurrence of an event is determined by using a previous position value or position assistance information. However, if the reuse of the old position value or position assistance information is not allowed, the new position value or position assistance information is calculated to determine the occurrence of the event. According to an embodiment of the present invention, a service is performed according to whether an event occurs using a location value or location assistance information of a terminal. However, in the case of a periodic location service, a previous location value is determined without a process of determining whether an event occurs. Or, it checks whether the position assistance information or the previous assistance information satisfies the Condition of previous Position, and transmits the satisfied values to the network.

In this case, assuming that the previous location value or location assistance information reuse is permitted, the target terminal 300 skips steps 316 and 318 when it is permitted to reuse the previous location value or location assistance information, and immediately proceeds to 320. Proceed to step to determine the occurrence of the event. If the event occurs, the target terminal 300 reports the event occurrence result to the H-SLP 200. At this time, the target terminal 300 transmits a SUPL DEFERRED_REPORT message to the H-SLP 200 to report the event occurrence result. SUPL DEFFERRED_REPORT message includes SESSION_ID, CLIENT_ID, and POS_ESTIMAT. Here, POS_ESTIMATE represents the position value or position assistance information of the target terminal 300, and the position value or position assistance information of the previous target terminal 300 may be included therein.

When the H-SLP 200 receives the SUPL DEFERRED REPORT message, the H-SLP 200 reports an event occurrence to the SUPL AGENT 100 using the MLP TLR message in step 322. At this time, the MLP TLR message includes req_id and TRL_POS. Here, req_id is an ID for distinguishing a repeat request service request between SUPL AGENT 100 and H-SLP 200. The TRL_POS refers to a previous position value or location assistance information of the target terminal 300.

On the other hand, if the reuse of the previous position value or location assistance information is not allowed, the target terminal 300 proceeds to step 316 as in the previous step and transmits a SUPL POS INIT message to the H-SLP 200. In this case, the SUPL POS INIT message includes SESSION_ID, LOCATION_ID, SET_ CAPABILITY, and the like. Here, SESSION_ID represents an ID for distinguishing a message exchange between the H-SLP 200 and the target terminal 300. The LOCATION_ID includes information such as network information, cell information, NEWTORK_ID, and SYSTEM_ID where the target terminal 300 exists. SET_CAPABILITY determines whether to use MS-ASSISTED A-GPS or MS-BASED A-GPS as the position calculation method and RRLP, RRC or IS-801 as the POSITIONING PROTOCOL. Indicates.

When the SUPL POS INIT message is received from the target terminal 300, the H-SLP 200 determines a location calculation method to be used for the location calculation process in step 318, and uses the determined location calculation method to determine a new target terminal 300. Calculate the location value or location assistance information. At this time, if the position calculation method for the position calculation performed in the target terminal 300 or the H-SLP 200 is stored in advance, the step of determining the position calculation method is omitted and the target terminal according to the stored position calculation method in advance. Calculate the position of 300.

On the other hand, if the position calculation method is not stored in advance, the H-SLP 200 compares its position calculation capability with the SET_CAPABILITY parameter included in the SUPL POS INIT message, and determines the position calculation method to be used for the position calculation. Then calculate a new terminal position value or location assistance information.

In this way, after newly calculating the position of the target terminal 300, the target terminal 300 proceeds to step 320 to determine the occurrence of the event. When the event occurs, the target terminal 300 reports the event occurrence result to the H-SLP 200. At this time, the target terminal 300 transmits a SUPL DEFERRED_REPORT message to the H-SLP 200 to report the event occurrence result. SUPL DEFFERRED_REPORT message includes SESSION_ID, CLIENT_ID, and POS_ESTIMAT. Here, POS_ESTIMATE represents the position value or position assistance information of the target terminal 300, and the newly calculated position value or position assistance information of the target terminal 300 may be included therein.

When the H-SLP 200 receives the SUPL DEFERRED REPORT message, the H-SLP 200 reports an event occurrence to the SUPL AGENT 100 using the MLP TLR message in step 322. At this time, the MLP TLR message includes req_id and TRL_POS. Here, req_id is an ID for distinguishing a repeat request service request between SUPL AGENT 100 and H-SLP 200. The TRL_POS refers to a newly calculated position value or location assistance information of the target terminal 300.

As described above, after reporting the event occurrence (first) according to whether the previous position value or the position assistance information is allowed to be reused, the H-SLP 200 and the target terminal 300 determine whether the next event occurrence report is necessary. Since the target terminal 300 knows the event occurrence condition requested by the location service requester (SPUL AGENT 100), it can know whether or not the next event occurrence report is required, and grasps the number of reports for each event report.

 When the next event occurrence report is required, the target terminal 300 enters a step for the next event occurrence report (second), and checks the previous position value or the position assistance information in step 324 before determining the next event occurrence. In step 326, it is determined whether the previous location value or the location assistance information is reused. In this case, steps 324 and 326 are performed similarly to steps 310 and 312, respectively, and thus, detailed descriptions of steps 310 and 312 are provided.

As a result of determining whether to reuse the previous location value or location assistance information in step 326, the target terminal 300 determines the occurrence of the next event using the previous location value or location assistance information when reuse of the previous location value or location assistance information is permitted. . However, when the reuse of the previous position value or position assistance information is not allowed, the next event occurrence is determined by calculating the new position value or position assistance information.

That is, if the target terminal 300 is allowed to reuse the previous position value or the location assistance information, the target terminal 300 skips steps 328 and 330, and immediately proceeds to step 332 to determine occurrence of the next event. However, if the target terminal 300 is not allowed to reuse the previous position value or position assistance information, the target terminal 300 performs steps 328 and 330 to calculate a new position value or position assistance information and then determines occurrence of the next event.

The target terminal 300 and the H-SLP 200 refer to STOP_TIME and INTERVAL to determine when the current conditional repetition request service is to be terminated, and to be STOP_TIME which is a time point at which the conditional repetition request service ends. Repeat steps 324 to 334 until it is repeated.

That is, in the method according to the first embodiment of the present invention, when the target terminal 300 or the H-SLP 200 determines that the recurring event occurs, whether the position value or the location assistance information of the target terminal 300 previously calculated is reusable. Judge. When the previously calculated position value or position assistance information is reusable, a new position calculation process is omitted and an event occurrence is determined using the previously calculated terminal position value or position assistance information. Therefore, the conditional repetition request service providing method using the previous location value or the location assistance information according to the first embodiment of the present invention reduces unnecessary location calculation process and enables determination of occurrence of several events by one location calculation process.

Meanwhile, the operation of the target terminal 300 for performing the conditional repetitive location service providing method using the previous location value or the location assistance information according to the first embodiment of the present invention as described above will be described in more detail. 4 is a flowchart illustrating an operation of the target terminal 300 according to the first embodiment of the present invention.

Referring to FIG. 4, the target terminal 300 determines whether a SUPL INIT message is received from the H-SLP 200 in step 402. The SUPL INIT message includes SESSION_ID, SLP_MODE, POS METHOD, CRITERIA, and SERVICE_TYPE, and includes the previous position if there is a previous position value or position assistance information. If there is a QoP required by SUPL AGENT 100, the QoP may be included.

If the SUPL INIT message is received, the target terminal 300 checks the previous position value or position assistance information in step 404. In this case, the previous location value or location assistance information may be the target terminal 300 received from the H-SLP 200 through the SUPL INIT message, and the previous location value or location previously stored by the target terminal 300. It may be auxiliary information. Therefore, the target terminal 300 checks whether the received SUPL INIT message includes the previous position value or position assistance information or the previous assistance information, and stores the previous position value or position assistance information or the previous assistance information stored in the target terminal 300. Checks for the existence of.

If the previous location value or location assistance information exists, the target terminal 300 has a Condition of previous Position including the QoP requested by the SUPL AGENT 100 in step 406, and the previous location value or location assistance information or the previous assistance. Check that the information meets the conditions. In this case, when the terminal has a plurality of previous position values or location assistance information, and when the terminal has more values than the requested number, the plurality of previous position values or location assistance information is Condition of previous Position, that is, the It is determined whether the selection condition suggested by the SPUL AGENT 100 or the H-SLP 200 is satisfied. If there is one of the plurality of previous position values or position assistance information that meets the Condition of previous Position, the target terminal 300 selects the previous position value or position assistance information corresponding to the selection condition and allows reuse. do. Then proceed to step 410. In operation 410, the target terminal 300 determines an event occurrence according to a previous position value or location assistance information, and reports an event when an event occurs.

On the other hand, if the previous position value or position assistance information or previous assistance information does not exist, or if the previous position value or position assistance information or assistance information does not meet the Condition of previous Position, the position value or position assistance information target terminal 300 ) Proceeds to step 412 to perform a new position calculation.

In this case, the target terminal 300 determines whether the location calculation method is stored in step 412. If there is a pre-stored location calculation method, the target terminal 300 calculates a new location value according to the pre-stored location calculation method in step 414. If there is no pre-stored location calculation method, the target terminal 300 determines a location calculation method for calculating a new location value in step 418 and calculates a new location value according to the newly determined location calculation method in step 420. In operation 416, the target terminal 300 determines an event occurrence according to the newly calculated terminal position value or location assistance information, and reports the event when the event occurs.

On the other hand, in the case of FIGS. 3 and 4 as described above, that is, in the case according to the first embodiment of the present invention. The H-SLP 200 notifies the target terminal 300 of the start of the location tracking service request, and requests a terminal location value or location assistance information (current location value or location assistance information) from the start of the location tracking service request. I speak.

As described above, in the first embodiment of the present invention, the target terminal 300 determines whether or not to reuse by using a condition including a QoP of a previous position value or position assistance information, and determines the previous position value or the previous position assistance. If the information can be reused, the previous position value or position assistance information is assumed to be the current position value or position assistance information and transmitted to the H-SLP 200. The H-SLP 200 recognizes and uses the previous location value or location assistance information transmitted from the target terminal 300 as the current location value or location assistance information.

The first embodiment of the present invention may be used when the location of the target terminal 300 is tracked from the time when theft report is received when theft report is received for tracking the stolen vehicle. However, in the first embodiment of the present invention, since the location is tracked from the time when the theft report is received, the location tracking before theft report may be impossible.

Accordingly, in the second embodiment of the present invention, the location tracking can be performed before the start of the location tracking service request. For example, according to the second embodiment of the present invention, when theft report is received, the H-SLP 200 enables location tracking before theft report is received by using the location value or location assistance information before theft report.

To this end, in the second embodiment of the present invention, the location tracking service request starts when the H-SLP 200 notifies the target terminal 300 of the location tracking service request start so that the location tracking can be performed before the location tracking service request start time. Request the previous location value or location assistance information. The target terminal 300 stores the previous location value or location assistance information for a predetermined period, and if the location value or location assistance information before the start of the location tracking service request is requested from the H-SLP 200, the H-SLP ( The location value or location assistance information corresponding to the QoP level or condition requested by the 200 is transmitted to the H-SLP 200. Accordingly, the H-SLP 200 provides a location tracking service from a time before the location tracking service request starts by using the previous location value or location assistance information transmitted from the target terminal 300.

Hereinafter, a method of providing a location tracking service according to a second embodiment of the present invention will be described in detail. 5 is a flowchart illustrating a method of performing conditional location service using a previously calculated location in a location service providing system according to a second embodiment of the present invention.

5 illustrates a method of using a previous location value or location assistance information during an Immediate Location request service as an example. However, the present invention can also be applied to a triggered location request service.

Referring to FIG. 5, the SUPL Agent 100 transmits a MLP SLIR (Mobile Location Protocol SUPL Location Immediate Request) message to the H-SLP 200 in step 502. In this case, the MLP SLIR message includes a parameter for requesting transmission of a previous location value or location assistance information. 6 is a configuration diagram of a parameter for requesting transmission of a previous location value or location assistance information according to an embodiment of the present invention. Referring to FIG. 6, parameters for requesting transmission of a previous position value or position assistance information include Number of Previous Position (602), Fixed time (604), Duration (606), Flag (608), and Condition of previous Position (610). , Previous data mode, previous retrival mode, Condition of previous Position.

Here, Number of Previous Position 602 represents the number of requested previous position values or position assistance information. The fixed time 604 indicates the time at which the previous position value or position assistance information (or position correction information) was calculated. The duration 606 represents a temporal period or a sequence of previous position values or position assistance information (eg, first position value or position assistance information, second position value or position assistance information, etc.), and is known to the H-SLP 200. It indicates information when a previous position value or position assistance information to be determined is determined. The flag 608 indicates whether there is a requested previous location value or location assistance information condition. For example, the Flag 608 value may have a value 0 when there is a previous position value or location assistance information condition and a value 1 when there is no location value or location assistance information condition.

The previous data mode indicates whether a previous position estimate or a previous position assistant data is required. This parameter may be sent directly by the SUPL Agent 100, or may be a parameter that can be additionally sent when the H-SLP 200 sends a condition requested by the SUPL Agent 100 to the target terminal 300. .

For example, if the SUPL Agent 100 requests the previous location value or location assistance information from the H-SLP 200, the H-SLP 200 sends the previous location value or location to a message sent to the target terminal 300. You can send a message requesting ancillary information. In this case, the previous data mode may be used to indicate whether to request the previous assistance information or the previous position value or the position assistance information. The reason why the H-SLP 200 requests the previous location assistance information is that the H-SLP 200 can calculate the previous location value of the target terminal 300 with the location assistance information sent by the target terminal 300. Because there is. (E.g. A-GPS SET assisted mode)

Previous retrival mode indicates whether a location server, i.e., a previous location value or previous location assistance information of the H-SLP 200 dl target terminal 300 is requested. This Previous retrieval mode can express the following four cases.

1. Ask for the previous position

2. Ask for location assistance

3. Request previous location value or previous location assistance

4. Requires both previous location value and previous location assistance

Current Condition of previous Position indicates a condition of a previous position value or position assistance information. The condition of the previous location value or location assistance information is a QoP of the previous location value or location assistance information, a time stamp of the previous location value or location assistance information, a time period of the previous location value or location assistance information, a previous location value or location assistance information. The calculated position method is included.

Condition of previous position 610 indicates a condition of the requested previous position value or position assistance information. 7 is a configuration diagram of a previous position value or position assistance information condition parameter according to an embodiment of the present invention. Referring to FIG. 7, the Condition of previous Position 610 is Max-Location-Age 702, Horizontal Accuracy 704, Vertical Accuracy 706, Delay 708, Positioning Method (position value between the terminal and the location server). Or a protocol used to calculate the location assistance information, a location calculation method, and the like, eg, SET based mode or SET assisted mode, for example, RRLP, IS-801, etc.), a previous location value or location assistance information or a previous assistance information. It includes a Time Stamp indicating a time at which the time was created, a Time Limitation or Time Period indicating a period during which the previous position value or position assistance information and the previous assistance information can be used.

The Max-Location-Age 702 indicates a validity period of a previous location value or location assistance information. The validity period of the previous position value or the position assistance information is a condition indicating how long the previous position value or the position assistance information should be valid from the time of calculation. Horizontal Accuracy 704 and Vertical Accuracy 706 indicate previous position value or position assistance information accuracy. 704 and 706 are one of pieces of information representing a quality of position (QoP). The previous position value or position assistance information accuracy is a condition indicating how accurate the previous position value or position assistance information should be. Delay 708 represents a previous position value or position assistance information delay. The previous position value or position assistance information delay is a condition indicating how long the delay may be from the time point at which the previous position value or position assistance information is calculated.

As described above, when the MLP SLIR message including the previous location value or the parameter requesting the transmission of the location assistance information is transmitted from the SUPL Agent 100, the H-SLP 200 performs routing information of the target terminal 300 in step 504. Judge. That is, it is determined whether the target terminal 300 is roaming, it is determined whether the target terminal 300 uses SUPL, and the routing information is determined accordingly. In the embodiment of the present invention, it is assumed that the target terminal 300 is using non-roaming and using SUPL.

After determining the routing information, the H-SLP 200 transmits a SUPL INIT message to the target terminal 300 in step 506 to start the Immediate Location request service. At this time, if the H-SLP 200 has a previous position value or position assistance information and can reuse it, the H-SLP 200 includes the previous position value or position assistance information in the SUPL INIT message. Send it. In addition, the H-SLP 200 transmits the SUPL INIT message by including a parameter for requesting transmission of a previous position value or position assistance information. Here, the parameter for requesting transmission of the previous location value or the location assistance information is the same as described with reference to FIGS. 6 and 7.

When the target terminal 300 receives the SUPL INIT message from the H-SLP 200, the target terminal 300 checks the previous position value or the position assistance information in step 508. In this case, the target terminal 300 may receive the previous position value or position assistance information from the H-SLP 200 through the SUPL INIT message or may have the previous position value or position assistance information therein. Therefore, the target terminal 300 checks whether there is a previous position value or position assistance information included in the received SUPL INIT message, and checks whether there is a previous position value or position assistance information stored in the target terminal 300.

If there is a previous position value or position assistance information, the target terminal 300 transmits a condition of a previous position value or position assistance information required by the H-SLP 200 among the previous position value or position assistance information in step 510, and transmits the information. The location value or location assistance information that satisfies the QoP of the previous location value or location assistance information is selected.

That is, the target terminal 300 compares the QoP requested by the SUPL AGENT 100 among the previous location value or location assistance information with the QoP of the previous location value or location assistance information, and when the QoP is higher than the requested QoP, Select location value or location assistance information. In addition, the target terminal 300 compares whether each of the previous location value or location assistance information corresponds to the condition of the previous location value or location assistance information required by the H-SLP 200, and compares the optimum previous location value. Or location assistance information. For example, the target terminal 300 compares the calculation time point of the previous position value or the position assistance information with the validity period of the previous position value or the position assistance information required by the H-SLP 200, and the most recently within the expiration date. Select the calculated previous position value or position assistance information. In addition, the target terminal 300 compares the accuracy of the previous position value or location assistance information it has with the accuracy of the previous position value or location assistance information required by the H-SLP 200, the previous position value or location with high accuracy Select ancillary information. In addition, the target terminal 300 determines how much the timing of the calculation of the previous position value or position assistance information that it has from the present and the degree of delay allowance of the previous position value or position assistance information required by the H-SLP 200. In comparison, the previous position value or position assistance information having the least delay is selected.

After selecting the previous location value or location assistance information to be transmitted as described above, the target terminal 300 attempts to connect to the data network in step 512. That is, the target terminal 300 checks whether it is connected to the packet data network, and if not, attempts to connect. At this time, the target terminal 300 determines whether it is PROXY_MODE or NON_PROXY_MODE by looking at the SLP_MODE 62 parameter included in the received SUPL INIT message. In the case of PROXY_MODE, the target terminal 300 performs the connection through the H-SLP 200 and the Internet Protocol (IP).

After performing the connection with the H-SLP 200 through IP, the target terminal 300 transmits to the H-SLP 200 through a SUPL REPORT message including previous location values in step 514.

When the H-SLP 200 receives the SUPL REPORT message, the H-SLP 200 reports the previous position value or location assistance information to the SUPL AGENT 100 using the MLP SLIA message in step 516.

As described above, when the H-SLP 200 requests previous location values or location assistance information, the operation of the target terminal 300 will be described in more detail. FIG. 8 is a target terminal according to the second embodiment of the present invention. An operation flowchart of 300 is shown.

Referring to FIG. 8, the target SET 300 determines whether a SUPL INIT message is received from the H-SLP 200 in step 802. In this case, the SUPL INIT message may include a previous position value or position assistance information position value or position assistance information or position assistance information or a position assistance information position value or position assistance information or position assistance information transmission request parameter. In addition, the number of previous location values or location assistance information may include a QoP of previous location values or location assistance information to be transmitted. Also, the MAXImum Location Age of the previous location value or location assistance information to be transmitted, the accuracy of the previous location value or location assistance information (Horizental Accuracy, Vertical Accuracy), and the calculated time of the previous location value or location assistance information (Fixed time) The delay may include a previous position value or a delay of the position assistance information. The validity period of the previous position value or the position assistance information is a condition indicating how far from the time when the previous position value or the position assistance information is calculated. And the accuracy is a condition indicating how accurate the previous position value or position assistance information. The calculation time point is a condition indicating when the calculation time point of the previous position value or location assistance information location value or location assistance information or location assistance information should occur. The delay is a condition indicating how long the delay may be from the time when the previous position value or the position assistance information is calculated. In addition, the positioning methods used by the terminal and the location server to calculate the position value or location assistance information are used as conditions. Conditions are the same as those in Figs.

If the SUPL INIT message is received, the target terminal 300 checks whether the previous position value or location assistance information is included in the SUPL INIT message in step 804. In this case, the target terminal 300 may receive the previous position value or position assistance information from the H-SLP 200 through the SUPL INIT message or may have the previous position value or position assistance information therein. Therefore, the target terminal 300 checks whether the previous position value or location assistance information included in the received SUPL INIT message exists, and checks whether the previous position value or location assistance information stored in the target terminal 300 exists.

If the previous location value or location assistance information does not exist, the target terminal 300 transmits a message indicating that the previous location value or location assistance information does not exist in step 808. In addition, if the previous location value or location assistance information exists, the target terminal 300 determines whether the previous location value or location assistance information is greater than the number of previous location values or location assistance information requested in step 810. If the previous location value or location assistance information is greater than the number of previous location values or location assistance information requested to be transmitted, the target terminal 300 transfers the request required by the H-SLP 200 among the plurality of previous location values or location assistance information. Location values or location assistance information should be screened.

Accordingly, if the previous location value or location assistance information is greater than the number of previous location values or location assistance information requested to be transmitted, the target terminal 300 displays the H-SLP 200 among the previous location values or location assistance information that it has in step 812. Select the position value or position assistance information that satisfies the Condition of previous Position including the condition of the previous position value or position assistance information, the QoP of the previous position value or position assistance information.

At this time, the target terminal 300 is a condition of each of the previous location value or location assistance information it has and the condition of the previous location value or location assistance information required by the QoP and H-SLP 200, the previous location value or location to be transmitted The condition of previous position including the QoP of the auxiliary information is compared, and the optimum previous position value or position auxiliary information is selected as a result of the comparison.

For example, the target terminal 300 compares the calculation time point of the previous position value or location assistance information that it has with the expiration date of the previous location value or location assistance information required by the H-SLP 200, and within the expiration date. Select the most recently calculated previous position value or position assistance information. In addition, the target terminal 300 compares the accuracy of the previous position value or location assistance information it has with the accuracy of the previous position value or location assistance information required by the H-SLP 200, the previous position value or location with high accuracy Select ancillary information. In addition, the target terminal 300 compares the delay time of the previous position value or position assistance information required by the H-SLP 200 with how much time the calculation time of the previous position value or position assistance information owned by the H-SLP 200 is compared. Select the previous position value or position assistance information with the lowest delay.

After selecting the optimal previous position value or position assistance information as described above, the target terminal 300 transmits the previous position value or position assistance information to the H-SLP 200 in step 814. Accordingly, the H-SLP 200 may provide the location tracking service before the start of the location tracking service request by using the previous location value or the location assistance information. For example, according to the second embodiment of the present invention, when the theft report is received, the H-SLP 200 enables the location tracking from the time before theft report is received using the location value or location assistance information before theft report.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

As described above, the present invention provides a location request service by reusing the value of the previously calculated location value or location assistance information of the target terminal in the terminal or the location server. Therefore, the present invention has an effect of reducing unnecessary location calculation process by using a previous location value or location assistance information when providing a location request service. You can also get past position values.

In addition, since the present invention enables the determination and reporting of multiple event occurrences in one location calculation process, the present invention can effectively provide a conditional repetitive location request service.

In addition, the present invention has the effect of providing a location service for the location before the start of the location service request by using the previous location value or location assistance information. For example, the present invention has an effect of enabling location tracking before theft report is received by using the location value or location assistance information before theft report is received.

Claims (30)

In the location service providing system, A location server for transmitting a SULE INIT Message (Secure User Plane Location Initiate Message) including at least one of a previous location value or a previous location assistance information according to a location service request from a location service requester; , When the location service request initial message is received, at least one of a previous location value or previous location assistance information included in the location service request initial message and at least one of a previously stored previous location value or previous location assistance information are determined. And a target terminal for providing location information to the location service requester by reusing any one of previously stored values or reusable ones of the previous location value or previous location information included in the location service request initial message. Provide system. The method of claim 1, The target terminal provides location information by performing a new location calculation if the previous location value or location assistance information included in the location service request initial message and the previous location value or location assistance information of the internally stored terminal are not reusable. Location service providing system. The method of claim 1, The location server provides the location service or the location assistance information included in the location service request initial message and transmits any one of a QoP requested by the location service requester and a QoP previously stored therein. system. The method of claim 1, The target terminal selects any one of a previous position value or position assistance information included in the location service request message and a previously stored position value or quality of position (QoP) of the position assistance information, and selects the selected previous position value or position. A location service providing system, characterized in that it is determined whether to reuse the previous location value or location assistance information by comparing the assistance information with the QoP that they have. The method of claim 3, The target terminal selects any one of a previous position value or position assistance information included in the location service request message and a previously stored position value or quality of position (QoP) of the position assistance information, and selects the selected previous position value or position. And a QoP according to the auxiliary information and a QoP included in the location service request message by the location server to determine whether to reuse a previous location value or location assistance information. The method of claim 3, The target terminal selects any one of a previous position value or position assistance information included in the location service request message and a previously stored position value or quality of position (QoP) of the position assistance information, and selects the selected previous position value or position. And comparing the QoP according to the auxiliary information with the QoP requested by the location service requester, and determining whether to reuse the previous position value or the position auxiliary information. The method according to any one of claims 4 to 6, The target terminal provides a location service, characterized in that for selecting a location value or location assistance information having a high QoP level by comparing the previous location value or location assistance information of the server with the previously stored QoP of the previous location value or location assistance information. system. A method for providing conditional repetition request service using a previous location value or location assistance information in a location service providing system, The location server transmits a Location Service Request Initial Message (SUPL INIT Message) that includes at least one of a previous location value or location assistance information to a target terminal according to a location service request from the location service requester. Process, Determining, by the target terminal, whether to reuse at least one of the location value or location assistance information included in the location service request message and at least one of previously stored location values or location assistance information; And providing, by the target terminal, location information to the location service requester by reusing any one of previous location values or previous location information previously stored or included in the location service request initial message as a result of the determination. Method for providing a conditional repeat request service using a previous position value or location assistance information in a location service providing system, characterized in that. The method of claim 8, wherein the transmission process, Determining whether the location server includes a previously stored previous location value or location assistance information; The location server sends a location service request initial message including at least one of a QoP requested by a location service requester and its own QoP for the previous location value or location assistance information, and a previously stored location value or location assistance information. Method for providing a conditional repeat request service using a previous position value or location assistance information in a location service providing system, characterized in that it comprises the step of transmitting a message to the target terminal. The method of claim 8, wherein the determining process, A selection process of selecting, by the target terminal, any one of a quality of position (QoP) based on a previous position value or location assistance information included in the location service request message and a QoP based on a previously stored previous position value or location assistance information and, Location service, characterized in that the target terminal, the reuse of determining whether to reuse the previous location value or location assistance information by comparing the QoP according to the selected previous location value or location assistance information with the QoP Method for providing conditional repetition request service using previous location value or location assistance information in providing system. The method of claim 9, wherein the determining process, Selecting, by the target terminal, any one of a quality of position (QoP) according to a previous position value or position assistance information included in the location service request message, and a previously stored previous position value or QoP of position assistance information; , And determining whether to reuse the previous location value or location assistance information by comparing the QoP according to the selected previous location value or location assistance information with the QoP requested by the location service requester. Method for providing conditional repetition request service using a previous location value or location assistance information in a location service providing system characterized in that. The method of claim 9, wherein the determination process, Selecting, by the target terminal, any one of a quality of position (QoP) according to a previous position value or position assistance information included in the location service request message and a QoP of an internally stored previous position value or position assistance information; And determining whether to reuse the previous location value or location assistance information by comparing the QoP according to the selected previous location value or location assistance information with the QoP of the location server. Method for providing conditional repetition request service using a previous location value or location assistance information in a location service providing system. The method according to any one of claims 10 to 12, wherein the selection process is The target terminal selects a location value or location assistance information having a high QoP level by comparing the previous location value or location assistance information included in the location service request message with the QoP of each of the previous location value or location assistance information stored therein. Conditional repetition request service providing method using a previous position value or location assistance information in a location service providing system characterized in that the. The method of claim 8, Providing location information by the target terminal performing location calculation by performing a new location calculation if the previous location value or location assistance information and the internally stored previous location value or location assistance information included in the location service request message are not reusable. Method for providing a conditional repetition request service using a previous location value or location assistance information in a location service providing system characterized in that it further comprises. In the location service providing system, At least one of a previous location value or location assistance information of a target terminal, a quality of position (QoP) and at least according to a previous location value or location assistance information required by the location service requester according to a location service request from a location service requester; A location server that sends a SULE INIT Message (Secure User Plane Location Initiate Message) containing a selection of one previous location value or location assistance information; When the location service request initial message is received, the location service request initial message included among a plurality of previously stored location value or location assistance information and previous location value or location assistance information included in the location service request initial message. And a target terminal for providing the location service provider with previous location values or location assistance information satisfying a QoP and a selection condition. The method of claim 15, The selection condition may include a previous position value or position assistance information, a previous position value or position assistance information calculation time, a sequence of previous position values or position assistance information, an expiration date of the previous position value or position assistance information, a previous position value or position assistance A location service providing system comprising conditions for information accuracy, previous location value or location assistance information delay. The method of claim 16, And the target terminal selects at least one previous location value or location assistance information satisfying at least one of the selection conditions. The method of claim 15, And the target terminal selects and provides position correction information (timing data, assistant data) instead of a previous position value or position assistance information. The method of claim 15, The target terminal selects any one of previous location values or location assistance information included in the location service request message, previously stored location information or location assistance information, and selects the selected previous location value or location assistance information and QoP. And selecting previous location values or location assistance information that satisfy the requested QoP in comparison with the requested QoP. The method of claim 17, The target terminal compares the calculated time of the previously stored previous location value or location assistance information with the validity of the previous location value or location assistance information requested by the location server, and the most recently calculated previous location value within the expiration date, or Location service providing system, characterized in that for selecting location assistance information. The method of claim 17, The target terminal compares the accuracy of the previously stored previous location value or location assistance information with the accuracy of the previous location value or location assistance information requested by the location server, and selects the previous location value or location assistance information with high accuracy. Location service providing system characterized in that. The method of claim 17, The target terminal compares the calculation time of the previous position value or position assistance information with the delay time from the present, and the previous position value having the lowest delay by comparing the delay tolerance of the previous position value or position assistance information requested by the position server. Or location assistance information. A method for providing conditional repetitive location service using a previously calculated location of a target terminal of a location service providing system, A selection condition for selecting at least one of the previous location value or location assistance information of the target terminal, a QoP according to the previous location value or location assistance information required by the location service requester, and at least one previous location value or location assistance information; Receiving a location service request initial message (SUPL INIT Message: Secure User Plane Location Initiate Message), The previous location value or location assistance information included in the location service request initial message, and the previous location value or location assistance information satisfying the QoP and the previous selection condition among a plurality of previously stored location information or location assistance information. The selection process of selecting at least one, And providing the selected previous location value or location assistance information to the location service requester. The method of claim 23, wherein The selection condition is the number of the previous position value or position assistance information, the time of calculating the previous position value or position assistance information, the order of the previous position value or position assistance information, the expiration date of the previous position value or position assistance information, the previous position value or position assistance information A method for providing conditional repetitive location service using a previously calculated location in a location service providing system, comprising a condition for accuracy, a previous location value or a location assistance information delay. The method of claim 24, wherein the selection process, Selecting previous location values or location assistance information included in the location service request initial message and previous location values or location assistance information that satisfies the selection condition among the previously stored plurality of previous location values or location assistance information. A conditional repetitive location service providing method using a previously calculated location in a location service providing system. The method of claim 23, wherein Providing conditional repetitive location service using a previously calculated location in the location service providing system, characterized in that it further comprises the step of selecting and providing position correction information (timing data, assistant data) instead of the previous position value or position assistance information. Way. The method of claim 23, wherein the selection process, Selects one of a previous location value or location assistance information included in the location service request initial message, a previously stored previous location value or location assistance information, and selects a QoP of the selected previous location value or location assistance information and the location service requester And selecting previous location values or location assistance information that satisfies the requested QoP by comparing the QoPs required by the COPs. The method of claim 25, wherein the selection process, Comparing the calculated time of the previously stored previous location value or location assistance information with the validity of the previous location value or location assistance information included in the location service request initial message, the most recently calculated previous location value or location assistance within the expiration date A method for providing conditional repetitive location services using previously calculated locations in a location service providing system, characterized in that information is selected. The method of claim 24, wherein the selection process, And selecting previous location values or location assistance information having high accuracy by comparing the accuracy of the previously stored location information or location assistance information with the accuracy of the previous location value or location assistance information included in the location service request initial message. Conditional repetitive location service providing method using the location previously calculated in the location service providing system. The method of claim 24, wherein the selection process,  Delay by comparing the calculated time of the previously stored position information or position assistance information with the delay of the current position, and how much the previous position value or position assistance information included in the position service request initial message is delayed from the present. A method for providing conditional repetitive location service using a previously calculated location in a location service providing system, characterized in that selects the least previous location value or location assistance information.

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