Network-initiated area event triggered positioning method for roaming terminal in mobile communication system
First Claim
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1. A network-initiated area event triggered positioning method in a mobile communication system having a home network and a visited network that support roaming of the SET (SUPL Enabled Terminal), the method comprising:
- receiving, by a first server from a SUPL (Secure User Plane Location) agent, a first MLP (Mobile Location Protocol) message including a MS-id, a client-id, a quality of positioning (QoP) and a TLRR (Triggered Location Reporting Request) event parameter;
verifying, by the first server, whether the SET is roaming;
sending, by the first server to the SET, a SUPL INIT (initialization) message including a session-id, a trigger type indicator, a positioning method, and a SLP (SUPL Location Platform) mode;
receiving, by the first server, a SUPL TRIGGERED START message from the SET to start an area event trigger session, the SUPL TRIGGERED START message including a session-id, a location identifier (lid), and SET capabilities;
sending, by the first server to a second server, a RLP TSRLRR (Roaming Location Protocol Triggered Standard Roaming Location Reporting Request) message that includes the SUPL TRIGGERED START message, the RLP TSRLRR message including area ids corresponding to areas for the area event triggered session;
receiving, by the first server, a RLP TSRLRA (Roaming Location Protocol Triggered Standard Roaming Location Reporting Answer) message that includes a SUPL TRIGGERED RESPONSE message in response to the sending of the RLP TSRLRR message;
sending, by the first server, the SUPL TRIGGERED RESPONSE message to the SET, the SUPL TRIGGERED RESPONSE message including a session-id, a positioning method, an address of the second server, trigger parameters, and the area ids corresponding to the areas for the area event triggered session;
receiving, by a third server, a SUPL POS INIT (positioning initialization) message from the SET to start a positioning session with the third server when a current cell-id and one of the area ids correspond to each other, the SUPL POS INIT message including a session-id, a lid, and SET capabilities, wherein the first server receives the area ids of a specific area from the second server through the third server;
obtaining, by the third server, a positioning result corresponding to the location identifier (lid) upon requesting from the second server through internal communications, wherein the positioning result was obtained by translating the location identifier (lid);
performing, by the third server, the positioning session with the SET by exchanging positioning messages with the SET to obtain a positioning result when the positioning result does not satisfy the QoP of the received MLP TLRR message;
sending, by the third server to the SET, a SUPL REPORT message including a session-id and the positioning result;
receiving, by the first server from the SET, the SUPL REPORT message including the session-id and the positioning result; and
sending, by the first server to the SUPL agent, a second MLP message including the positioning result.
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Abstract
A network-initiated area event triggered positioning method for a terminal in a session-based position information system is discussed. Network-initiation of area-based positioning of a roaming terminal is discriminated according to a proxy mode and a non-proxy mode, and area-based positioning for the roaming terminal is performed in various manners according to whether an SLP for performing the positioning procedure with respect to the discriminated modes is a V-SLP or an H-SLP.
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Citations
16 Claims
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1. A network-initiated area event triggered positioning method in a mobile communication system having a home network and a visited network that support roaming of the SET (SUPL Enabled Terminal), the method comprising:
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receiving, by a first server from a SUPL (Secure User Plane Location) agent, a first MLP (Mobile Location Protocol) message including a MS-id, a client-id, a quality of positioning (QoP) and a TLRR (Triggered Location Reporting Request) event parameter; verifying, by the first server, whether the SET is roaming; sending, by the first server to the SET, a SUPL INIT (initialization) message including a session-id, a trigger type indicator, a positioning method, and a SLP (SUPL Location Platform) mode; receiving, by the first server, a SUPL TRIGGERED START message from the SET to start an area event trigger session, the SUPL TRIGGERED START message including a session-id, a location identifier (lid), and SET capabilities; sending, by the first server to a second server, a RLP TSRLRR (Roaming Location Protocol Triggered Standard Roaming Location Reporting Request) message that includes the SUPL TRIGGERED START message, the RLP TSRLRR message including area ids corresponding to areas for the area event triggered session; receiving, by the first server, a RLP TSRLRA (Roaming Location Protocol Triggered Standard Roaming Location Reporting Answer) message that includes a SUPL TRIGGERED RESPONSE message in response to the sending of the RLP TSRLRR message; sending, by the first server, the SUPL TRIGGERED RESPONSE message to the SET, the SUPL TRIGGERED RESPONSE message including a session-id, a positioning method, an address of the second server, trigger parameters, and the area ids corresponding to the areas for the area event triggered session; receiving, by a third server, a SUPL POS INIT (positioning initialization) message from the SET to start a positioning session with the third server when a current cell-id and one of the area ids correspond to each other, the SUPL POS INIT message including a session-id, a lid, and SET capabilities, wherein the first server receives the area ids of a specific area from the second server through the third server; obtaining, by the third server, a positioning result corresponding to the location identifier (lid) upon requesting from the second server through internal communications, wherein the positioning result was obtained by translating the location identifier (lid); performing, by the third server, the positioning session with the SET by exchanging positioning messages with the SET to obtain a positioning result when the positioning result does not satisfy the QoP of the received MLP TLRR message; sending, by the third server to the SET, a SUPL REPORT message including a session-id and the positioning result; receiving, by the first server from the SET, the SUPL REPORT message including the session-id and the positioning result; and sending, by the first server to the SUPL agent, a second MLP message including the positioning result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A network-initiated area event triggered positioning method in a mobile communication system having a home network and a visited network that support roaming of a SET (SUPL Enabled Terminal), the method performed by the SET and comprising:
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receiving, from a first server, a SUPL (Secure User Plane Location) INIT (initialization) message including a session-id, a trigger type indicator, a positioning method, and a SLP (SUPL Location Platform) mode; sending, to the first server, a SUPL TRIGGERED START message to start an area event ˜
triggered session, the SUPL TRIGGERED START message including a session-id, a location identifier (lid), and SET capabilities;receiving, from the first server, a SUPL TRIGGERED RESPONSE message including the session-id, a positioning method, an address of a second server, trigger parameters, and area ids corresponding to areas for the area event triggered session; sending, to the second server, a SUPL POS INIT (positioning initialization) message to start a positioning session with the second server when a current cell-id and one of the area ids correspond to each other, the SUPL POS INIT message including a session-id, a lid, and SET capabilities; performing the positioning session with the second server by exchanging positioning messages with the second server to obtain a positioning result; receiving, from the second server, a SUPL REPORT message including a session-id and the positioning result; comparing the positioning result with a specific area in the trigger parameters to check when an event trigger condition has been met; sending, to the first server, a SUPL REPORT message when the event trigger condition has been met, the SUPL REPORT message including the session-id and the positioning result; and receiving, from the first server, a SUPL END message. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification