NETWORK-INITIATED AREA EVENT TRIGGERED POSITIONING METHOD FOR ROAMING TERMINAL IN MOBILE COMMUNICATION SYSTEM

• US 20100273480A1
• Filed: 07/08/2010
• Published: 10/28/2010
• 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 7,970,396 B2
• Time in Patent Office: Days
• US Class Current: 455/433
• CPC Class Codes: G01S 5/0054 of actual mobile position, i.e. position calculation on base station
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/021 Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
• CPC Class Codes: H04W 4/029 Location-based management or tracking services
• CPC Class Codes: H04W 4/20 Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
• CPC Class Codes: H04W 60/04 using triggered events
• 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 8/08 Mobility data transfer
• CPC Class Codes: H04W 8/10 between location register and external networks
• CPC Class Codes: H04W 8/12 between location registers or mobility servers
• CPC Class Codes: H04W 80/08 Upper layer protocols network arrangements or communication protocols for networked applications H04L67/00

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.

Claims

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 a SET (SUPL Enabled Terminal), the method comprising:

receiving, by a first server from a SUPL Agent, a MLP message including a MS-id, a client-is, a quality of positioning (QoP) and a TLRR event parameter;

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

sending, by the first server to the SET, a SUPL INIT message including a session-id, a trigger type indicator, a positioning method, and a SLP 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), SET capabilities;

sending, by the first server to a second server, a RLP TSRLRR message that includes the SUPL TRIGGERED START message, the RLP SSRLIR message including area ids corresponding to the areas for the area event triggered session;

receiving, by the first server, a RLP TSRLRA message that includes a SUPL TRIGGERED RESPONSE 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 third 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 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 session-id, lid, and SET capabilities, and wherein the first server receives the area ids of the specific area from the second server through a third server;

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

sending, by the third server, a SUPL REPORT message to the SET, the SUPL REPORT message including a session-id and the positioning result;

receiving, by the first server from the SET, a SUPL REPORT message including the session-id and the positioning result; and

sending, by the first server to the SUPL Agent, the positioning result using an MLP message.

2. The method of claim 1, further comprising:

sending, by the first server, a MLP TLRA message to the SUPL Agent to indicate that the SUPL triggered response has been accepted.

3. The method of claim 1, wherein the calculating of the positioning result is performed by the third server if SET-assisted mode or performed by the SET if SET-based mode.

4. The method of claim 1, wherein the SUPL REPORT message is received from the SET if a event trigger condition has been met as a result of comparing the positioning result with the specific area in the trigger parameter.

5. The method of claim 1, further comprising:

sending, by the first server to the second server, a SUPL END message using a RLP message; and

sending, by the first server to the SET, the SUPL END message.

6. The method of claim 1, wherein the TLRR event parameter comprises at least one of a change-area type and position values of the specific area related to the area event triggered positioning.

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

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

9. The method of claim 1, wherein the first server is a H-SLC, the second server is a V-SLC, and the third server is a V-SPC.

10. 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.

11. The method of claim 1, wherein the first server uses a proxy mode, and the third server has a positioning function.

12. 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 comprising:

receiving, from a first server, a SUPL INIT message including a session-id, a trigger type indicator, a positioning method, and a SLP mode;

sending, to the first server, a SUPL TRIGGERED START message to start an area event trigger session, the SUPL TRIGGERED START message including a session-id, a location identifier (lid), SET capabilities;

receiving, from the first server, the SUPL TRIGGERED RESPONSE message including a session-id, a positioning method, a V-SPC address, trigger parameters, and the area ids corresponding to the areas for the area event triggered session;

sending, to a second server, a SUPL POS INIT 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 session-id, 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 the specific area in the trigger parameter to check if a event trigger condition has been met;

sending, to the first server, a SUPL REPORT message if the event trigger condition has been met, the SUPL REPORT message including a session-id and the positioning result; and

receiving, from the first server, a SUPL END message.

13. The method of claim 12, wherein the calculating of the positioning result is performed by the second server if SET-assisted mode or performed by the SET if SET-based mode.

14. The method of claim 12, wherein the trigger type indicator is an area event.

15. The method of claim 12, wherein the first server is a H-SLC and the second server is a V-SPC.

16. The method of claim 12, 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.

17. The method of claim 12, wherein the first server uses a proxy mode, and the second server has a positioning function.