Method of registering and deregistering a user

• US 8,121,597 B2
• Filed: 03/27/2002
• Issued: 02/21/2012
• Est. Priority Date: 03/27/2002
• Status: Expired due to Term

• Current Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Original Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Tammi, Kalle
• Primary Examiner(s): Cai, Wayne
• Application Number:
  US10/109,565
• Publication Number:
  US 20040203763A1
• Time in Patent Office: 3,618 Days
• Field of Search: 455/456, 455/460, 455/417, 455/456.1, 4554351-4353, 455/435, 342/357.09, 370/329, 709/232, 709/223
• US Class Current: 455/435.1
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 8/06 Registration at serving network Location Register, VLR or user mobility server
• CPC Class Codes: H04W 8/12 between location registers or mobility servers

Abstract

The invention comprises a method for registering and deregistering user equipment from a communications system and comprises the steps of sending a request to a first node to register or deregister the user equipment from or to the communications system, determining at the first node to determine if the request is a request to register or a request to deregister, and carrying out at one least predetermined operation at a second node only if the request is a request to register.

Claims

1. A method comprising:

receiving from an interrogating call session control function node of a home network at a home subscriber server of said home network a user authorization request message comprising an attribute indicating the result of a determination at the interrogating call session control function node as to whether a request to register or deregister to or from a visiting network a user equipment associated with said home network is a request to register or a request to deregister; and

carrying out a roaming analysis at said home subscriber server of said home network only when said attribute comprised in said message indicates that said request is a request to register, wherein said roaming analysis is a determination as to whether or not the user equipment is entitled to operate with the visiting network.

2. A method as claimed in claim 1, wherein said message includes an attribute set in dependence on if the request is a request to register or a request to deregister.

3. A method as claimed in claim 2, wherein said message requests authorization of the user equipment from the home subscriber server.

4. A method as claimed in claim 2, wherein said request is a session initiation protocol register message.

5. A method as claimed in claim 1, wherein said visiting network is an interne protocol multimedia system.

6. A method as claimed in claim 1, wherein said user equipment comprises one of:

a mobile station;

a personal digital assistant, portable computer;

computer;

mobile telephone.

7. A method as claimed in claim 1, wherein said visiting network is a wireless communications network.

8. Apparatus which is configured to

receive from an interrogating call session control function node of a home network at a home subscriber server of said home network a user authorization request message comprising an attribute indicating the result of a determination at said interrogating call session control function node as to whether a request to register to or from a visiting network a user equipment associate with said home network is a request to register or a request to deregister;

and

carry out at said home subscriber server of said home network a roaming analysis only when said attribute comprised in said message indicates that said request is a request to register, wherein said roaming analysis is a determination as to whether or not the user equipment is entitled to operate with the visiting network.

9. Apparatus as claimed in claim 8, wherein said message includes an attribute set in dependence on if the request is a request to register or a request to deregister.

10. Apparatus being configured to:

receive at an interrogating call session control function node of a home network a message according to a first protocol and relating to a request from a user equipment associated with said home network;

determine if said request from said user equipment is a request to register or a request to deregister from a communication system, including checking information in an expires header field of said message, said expires header field having one value if the request is a request to register and a different value if the request is a request to deregister; and

generate a user authorization request message according to a second protocol different from the first protocol, and to send said message to a home subscriber server of said home network, said message comprising an attribute indicating if the user equipment is registering or deregistering, wherein the home subscriber server is configured to carry out a roaming analysis only when said attribute comprised in said message indicates that the user equipment is registering, wherein said roaming analysis is a determination as to whether or not the user equipment is entitled to operate with a network to which it is currently attached.

11. Apparatus being configured to:

receive at an interrogating call session control function node of a home network a message according to a first protocol and relating to a request from a user equipment associated with said home network;

determine if said request from said user equipment is a request to register to a visiting network or a request to deregister from a visiting network, including checking information in an expires header field of said message, said expires header field having one value if the request is a request to register and a different value if the request is a request to deregister; and

generate a user authorization request message according to a second protocol different from the first protocol, and to send said message to a home subscriber server of said home network, said message comprising an attribute indicating if the user equipment is registering or deregistering, wherein the home subscriber server is configured to carry out a roaming analysis only when said attribute comprised in said message indicates that the user equipment is registering, wherein said roaming analysis is a determination as to whether or not the user equipment is entitled to operate with said visiting network.

12. Apparatus according to claim 11, wherein said message to the home subscriber server includes an attribute readable by the home subscriber server and indicating if the user equipment is registering or deregistering.

13. Apparatus as claimed in claim 11, wherein said visiting network is an internet protocol multimedia system.

14. Apparatus as claimed in claim 11, wherein said visiting network is a wireless communication network.

15. A method comprising:

receiving at an interrogating call session control function node of a home network a message according to a first protocol and relating to a request from a user equipment associated with said home network;

determining if said request from said user equipment is a request to register to or deregister from a communications system, including checking information in an expires header field of said message, said expires header field having one value of the request is a request to register and a different value if the request is a request to deregister; and

generating a user authorization request message according to a second protocol different from the first protocol, and

sending said message to a home subscriber server to said home network, said message comprising an attribute indicating if the user equipment is registering or deregistering, wherein the home subscriber server is configured to carry out a roaming analysis only when said attribute comprised in said message indicates that the user equipment is registering, wherein said roaming analysis is a determination as to whether or not the user equipment is entitled to operate with a network to which it is currently attached.

16. A method comprising:

receiving at an interrogating call session control function node of a home network a message according to a first protocol and relating to a request from a user equipment associated with said home network;

determining if said request from said user equipment is a request to register to a visiting network or a request to deregister from a visiting network, including checking information in an expires header field of said message, said expires header field having one value if the request is a request to register and a different value of the request is a request to deregister; and

generating a user authorization request message according to a second protocol different from the first protocol, and

sending said message to a home subscriber server of said home network, said message comprising an attribute indicating if the user equipment is registering or deregistering, wherein the home subscriber server is configured to carry out a roaming analysis only when said attribute comprised in said message indicates that the user equipment is registering, wherein said roaming analysis is a determination as to whether or not the user equipment is entitled to operate with said visiting network.

17. A method according to claim 16, wherein said message to the home subscriber server includes an attribute readable by the home subscriber server and indicating if the user equipment is registering or deregistering.

18. A method as claimed in claim 16, wherein said visiting network is an internet protocol multimedia system.

19. A method as claimed in claim 16, wherein said visiting network is a wireless communication network.