Location positioning method in handover between networks

• US 8,442,523 B2
• Filed: 06/29/2012
• Issued: 05/14/2013
• Est. Priority Date: 03/24/2006
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Shim, Dong-Hi
• Primary Examiner(s): Magloire, Vladimir
• Application Number:
  US13/538,766
• Publication Number:
  US 20120270542A1
• Time in Patent Office: 319 Days
• Field of Search: 455436-444, 4554321-4323, 455/552.1, 4554561-4567
• US Class Current: 455/432.1
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 4/02 Services making use of location information
• 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

Abstract

A method according to one embodiment includes: transmitting, by a mobile terminal, a secure user plane location (SUPL) position initiation message to a home-SUPL location platform (H-SLP); receiving, by the mobile terminal, a SUPL end message from the H-SLP, the SUPL end message including a parameter indicating that the mobile terminal is outside of a coverage of a visited-SUPL location platform (V-SLP); transmitting, by the mobile terminal, a SUPL triggered start message to the H-SLP, the SUPL triggered start message including a cause for re-sending the SUPL triggered start message; and receiving, by the mobile terminal, a SUPL triggered response message from the H-SLP, the SUPL triggered response message including at least one trigger parameter.

Claims

1. A method of exchanging messages for a location service, comprising:

transmitting, by a mobile terminal, a secure user plane location (SUPL) position initiation message to a home-SUPL location platform (H-SLP);

receiving, by the mobile terminal, a SUPL end message from the H-SLP, the SUPL end message including a parameter indicating that the mobile terminal is outside of a coverage of a visited-SUPL location platform (V-SLP);

transmitting, by the mobile terminal, a SUPL triggered start message to the H-SLP, the SUPL triggered start message including a cause for re-sending the SUPL triggered start message; and

receiving, by the mobile terminal, a SUPL triggered response message from the H-SLP, the SUPL triggered response message including at least one trigger parameter.

2. The method of claim 1, further comprising:

triggering a session using the received at least one trigger parameter.

3. The method of claim 2, wherein the triggered session is a periodic session.

4. The method of claim 2, wherein the triggered session is an area event session.

5. The method of claim 1, wherein the SUPL position initiation message includes a session identifier and a location identifier.

6. The method of claim 1, wherein the SUPL triggered start message further includes a session identifier, a location identifier, and capability information of the mobile terminal.

7. The method of claim 1, wherein the at least one trigger parameter includes area ids of a specific area.

8. A method of exchanging messages for a location service, comprising:

receiving, by a home-SUPL location platform (H-SLP), a secure user plane location (SUPL) position initiation message from a mobile terminal;

transmitting, by the H-SLP, a SUPL end message to the mobile terminal, the SUPL end message including a parameter indicating that the mobile terminal is outside of a coverage of a first visited-SUPL location platform (V-SLP);

receiving, by the H-SLP, a SUPL triggered start message to the mobile terminal, the SUPL triggered start message including a cause for re-sending the SUPL triggered start message; and

transmitting, by the H-SLP, a SUPL triggered response message to the mobile terminal, the SUPL triggered response message including at least one trigger parameter.

9. The method of claim 8, further comprising:

forwarding the SUPL position initiation message to the first V-SLP.

10. The method of claim 9, further comprising:

receiving a standard SUPL roaming position (SSRP) message including the SUPL end message from the first V-SLP.

11. The method of claim 10, wherein the SUPL triggered start message further includes a session identifier, a location identifier, and capability information of the mobile terminal.

12. The method of claim 11, further comprising:

identifying a second V-SLP based on the location identifier included in the SUPL triggered start message; and

communicating with the second V-SLP.

13. The method of claim 8, wherein the at least one trigger parameter triggered is for a periodic session.

14. The method of claim 8, wherein the at least one trigger parameter triggered is for an area event session.

15. The method of claim 8, wherein the SUPL position initiation request message includes a session identifier and a location identifier.

16. The method of claim 8, wherein the at least one trigger parameter includes area ids of a specific area.