SET INITIATED AREA EVENT TRIGGERED POSITIONING METHOD IN MOBILE COMMUNICATION SYSTEM

• US 20100093369A1
• Filed: 09/30/2009
• Published: 04/15/2010
• Est. Priority Date: 04/06/2006
• Status: Active Grant

• Current Assignee: Dong-Hee Shim
• Original Assignee: Dong-Hee Shim
• Inventors: SHIM, Dong-Hee
• Granted Patent: US 8,116,786 B2
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: G01S 5/0009 Transmission of position information to remote stations involving assistance data G01S5/0236
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 80/08 Upper layer protocols network arrangements or communication protocols for networked applications H04L67/00

Abstract

A SET-initiated area event triggered positioning method in a session-based service system is disclosed. The method is variously performed according to a proxy mode or a non-proxy mode, and further according to which SLP (SUPL location platform) has a positioning procedure.

Claims

1. A SUPL Enabled Terminal (SET)-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, the method comprising:

receiving, by a first server, a SUPL TRIGGERED START message from a SET to start a trigger session, the SUPL TRIGGERED START message including a session-id, SET capabilities, a trigger type indicator, a location identifier (lid), and trigger parameters;

verifying, by the first server, whether the SET is roaming;

sending, by the first server, a RLP SSRLIR message that includes the SUPL TRIGGERED START message to a second server after the SET is verified to be roaming;

sending, by the second server, a RLP message to the first server, the RLP message including area ids to a specific area in the trigger parameters;

sending, by the first server, in response to the SUPL TRIGGERED START message, a SUPL TRIGGERED RESPONSE message to the SET, the SUPL TRIGGERED RESPONSE message including a session-id, a positioning method, and area ids corresponding to the specific area;

receiving, by a third server from the SET, a POS INIT message to allow the SET to start a positioning session with the third server when a comparison of a current cell-id and one of the area ids satisfy a positioning session start condition, wherein the POS INIT message includes a session-id, lid, and SET capabilities;

calculating, by the third server with the SET, a positioning result by exchanging positioning messages;

sending, by the third server to the SET, a SUPL REPORT message that includes the positioning result; and

receiving, by the third server from the SET, a SUPL END message.

2. The method of claim 1, wherein the first server is a H-SLP (Home SUPL Location Platform), the second server is a V-SLC (Visited SUPL Location Center), and the third server is a V-SPC (Visited SUPL Positioning Center).

3. The method of claim 1, wherein the trigger type indicator is an area event.

4. The method of claim 1, wherein the verifying step is based on routing information.

5. The method of claim 1, wherein the trigger parameters include trigger conditions indicating a change-area type for an area event triggered positioning, and a specific area indicating a name or position values of the specific area.

6. The method of claim 5, wherein the change-area type for an area event triggered positioning indicates entering to the specific area, leaving the specific area, or staying at the specific area.

7. The method of claim 1, wherein the trigger parameters include area ids that represent one of ids of cells that belong to an event area, mobile country codes (MCC), mobile network codes (MNC), location area codes (LAC), and primary scrambling code numbers.

8. A SET-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, the method comprising:

sending, to a first server, a SUPL TRIGGERED START message to start a trigger session, the SUPL TRIGGERED START message including a session-id, SET capabilities, a trigger type indicator, a location identifier (lid), and trigger parameters;

receiving, from the first server in response to the sent SUPL TRIGGERED START message, the SUPL TRIGGERED RESPONSE message to the SET, the SUPL TRIGGERED RESPONSE message including a session-id, a positioning method, and the area ids corresponding to the specific area;

sending, to a third server, a POS INIT message to start a positioning session with the third server when a current cell-id and one of the area ids correspond to each other, wherein the POS INIT message includes a session-id, lid, and SET capabilities, and wherein the first server receives the area ids of the specific area from the third server through a second server;

performing the positioning session with the third server by exchanging positioning messages with the third server to obtain a positioning result;

receiving, from the third server, a SUPL REPORT message including the positioning result;

comparing the positioning result with the specific area in the trigger parameters; and

reporting, to a SUPL Agent, the positioning result when a trigger condition in the trigger parameters is satisfied.

9. The method of claim 8, wherein the trigger parameters include trigger conditions indicating a change-area type for an area event triggered positioning, and a specific area indicating a name or position values of the specific area.

10. The method of claim 9, wherein the change-area type for an area event triggered positioning indicates entering to the specific area, leaving the specific area, or staying at the specific area.

11. The method of claim 8, wherein the first server is a H-SLC (Home SUPL Location Center), the second server is a V-SLC (Visited SUPL Location Center), and the third server is a V-SPC (Visited SUPL Positioning Center).

12. The method of claim 11, wherein the calculating of the positioning result is performed by the V-SPC in case of a SET-assisted mode or performed by the SET in case of a SET-based mode.