Method of providing location service over IMS network

• US 20060242307A1
• Filed: 04/21/2006
• Published: 10/26/2006
• Est. Priority Date: 04/21/2005
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Baek, Hye-Won, Jung, Heung-Chul
• Granted Patent: US 7,729,705 B2
• Time in Patent Office: Days
• US Class Current: 709/227
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• 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 4/029 Location-based management or tracking services

Abstract

A method of providing Location Services (LCS) over an Internet Protocol Multimedia Subsystem (IMS) network in a wireless communication system is provided. An LCS client transmits a service connection request message including a message requesting the location information of a User Equipment (UE). The UE transmits the location information to the LCS client.

Claims

1. A method of providing a location service over an Internet protocol (IP) multimedia subsystem (IMS) network in a wireless communication system, comprising the steps of:

transmitting by a location service client a service connection request message including a message requesting location information of a user equipment (UE); and

transmitting by the UE the location information to the location service client.

2. The method of claim 1, wherein the service connection request message is a session initiation protocol (SIP) message.

3. The method of claim 2, wherein the SIP message includes a mobile location protocol (MLP) message in a session description protocol (SDP) area.

4. The method of claim 2, wherein the step of transmitting a service connection request message comprises transmitting the SIP message to the UE via a proxy-call session control function (P-CSCF), a serving-call session control function (S-CSCF), and an interrogating-call session control function (I-CSCF).

5. The method of claim 4, wherein the step of transmitting the SIP message to the UE comprises, upon receipt of the SIP message, checking a privacy class of the UE and transmitting the SIP message to the UE by the S-CSCF, only when the privacy class allows.

6. The method of claim 5, wherein the privacy class specifies LCS availability, privacy strictness, and classes of location service clients for which location information is allowed.

7. The method of claim 4, further comprising the step of, upon receipt of the location information of the UE destined for the location service client, checking the privacy class of the UE and transmitting the location information to the location service client by the S-CSCF, only when the privacy class allows.

8. The method of claim 7, wherein the privacy class specifies LCS availability, privacy strictness, and classes of location service clients for which location information is allowed.

9. A method of providing a conditional location service over an Internet protocol (IP) multimedia subsystem (IMS) network in a broadband wireless communication system, comprising the steps of:

transmitting by a location service client a service connection request message including a message requesting location information of a user equipment (UE);

checking a condition that triggers transmission of the location information in the service connection request message and transmitting by the UE a response message indicating reception of the service connection request message to the location service client; and

transmitting by the UE the location information to the location service client, if the condition is fulfilled.

10. The method of claim 9, wherein the service connection request message is a session initiation protocol (SIP) message.

11. The method of claim 10, wherein the SIP message includes a mobile location protocol (MLP) message in a session description protocol (SDP) area.

12. The method of claim 10, wherein the step of transmitting a service connection request message comprises the step of transmitting the SIP message to the UE via a proxy-call session control function (P-CSCF), a serving-call session control function (S-CSCF), and an interrogating-call session control function (I-CSCF).

13. The method of claim 12, wherein the step of transmitting the SIP message to the UE comprises, upon receipt of the SIP message, checking the privacy class of the UE and transmitting the SIP message to the UE by the S-CSCF, only when the privacy class allows.

14. The method of claim 13, wherein the privacy class specifies LCS availability, privacy strictness, and classes of location service clients for which location information is allowed.

15. The method of claim 12, further comprising the step of, upon receipt of the location information of the UE destined for the location service client, checking the privacy class of the UE and transmitting the location information to the location service client by the S-CSCF, only when the privacy class allows.

16. The method of claim 15, wherein the privacy class specifies LCS availability, privacy strictness, and classes of location service clients for which location information is allowed.

17. A method of providing a location service in a wireless communication system, comprising the steps of:

transmitting by a location service client a service connection request message including a message requesting a user equipment location information; and

transmitting the location information to the location service client by the user equipment.

18. The method of claim 17, wherein the service connection request message is a session initiation protocol message.

19. A method of providing a conditional location service in a wireless communication system, comprising the steps of:

transmitting by a location service client a service connection request message including a message requesting user equipment location information;

checking a condition that triggers transmission of the user equipment location information in the service connection request message and transmitting by the user equipment a response message indicating reception of the service connection request message to the location service client; and

transmitting by the user equipment the location information to the location service client.

20. The method of claim 19, wherein the service connection request message is a session initiation protocol message.