Method and apparatus for an SIP based paging scheme

• US 20040203894A1
• Filed: 12/13/2002
• Published: 10/14/2004
• Est. Priority Date: 12/13/2002
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: DOCOMO Communications Laboratories USA, Inc.
• Inventors: Wu, Gang, Watanabe, Fujio
• Granted Patent: US 7,020,440 B2
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

A location update system for updating a location of a mobile terminal. The system includes a paging area with a mobile terminal present within the paging area, a domain area with the mobile terminal present within the domain area and a paging location update server that is communication with the mobile terminal and updates a location of the mobile terminal and updates the domain area.

Claims

1. A method of paging a mobile terminal, the method comprising:

providing a mobile terminal in a paging area and in a location area associated with an application layer;

moving said mobile terminal to a location that is outside said paging area and said location area; and

in response to said moving, sending a single message to a location server that updates said location of said mobile terminal and a domain area associated with said application.

2. The method of claim 1, wherein said application layer is an SIP application layer and said domain area is an SIP domain area.

3. The method of claim 1, wherein said paging area and said location area are substantially identical.

4. The method of claim 1, wherein said paging area and said location area are not identical.

5. The method of claim 1, wherein said paging area is designed by an L2 protocol issue.

6. The method of claim 2, wherein said paging area is designed by an L2 protocol issue.

7. The method of claim 1, wherein said sending comprises:

sending a paging location area update signal to a paging location update server.

8. The method of claim 7, further comprising updating a location server that tracks said location of said mobile terminal.

9. The method of claim 1, wherein said mobile terminal is in a dormant mode during said moving.

10. A method of updating a location of a mobile terminal, the method comprising:

sending a signal from a mobile terminal to a paging location update server;

identifying a location of an L2 paging area from which said signal was sent from said mobile terminal;

determining whether said paging area is the same as an associated paging area to which said mobile terminal is currently being associated or connected;

sending a current location update and a current SIP domain address of said mobile terminal to said paging update location server;

determining if an SIP domain address of said mobile terminal where it moves to a new paging area is the same as said current SIP domain address of said mobile terminal; and

sending a new SIP location of said mobile terminal to a current SIP location server where said mobile terminal is located when said SIP domain address of said mobile terminal where it is located in a new paging area is different than said current SIP domain address of said mobile terminal.

11. A location update system for updating a location of a mobile terminal comprising:

a paging area with a mobile terminal present within said paging area;

a domain area with said mobile present within said domain area; and

a paging location update server that is in communication with said mobile terminal and updates a location of said mobile terminal and updates said domain area.

12. The location update system of claim 11, wherein said paging area is L2 based.

13. The location update system of claim 11, wherein said domain area is SIP based.

14. The location update system of claim 12, wherein said domain area is SIP based.

15. The location update system of claim 11, further comprising a location server corresponding to said domain area that is in communication with said paging location update server and said domain area.

16. The location update system of claim 13, further comprising an SIP location server corresponding to said domain area that is in communication with said paging location update server and said domain area.