Routing messages

• US 8,315,258 B2
• Filed: 05/13/2010
• Issued: 11/20/2012
• Est. Priority Date: 02/19/2003
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Westman, Ilkka, Lahtinen, Lauri, Beres, Ervin, Bajko, Gabor, Kiss, Krisztian, Bertenyi, Balazs
• Primary Examiner(s): Sam, Phirin
• Assistant Examiner(s): Wong, Blanche
• Application Number:
  US12/779,924
• Publication Number:
  US 20100281124A1
• Time in Patent Office: 922 Days
• Field of Search: None
• US Class Current: 370/389
• CPC Class Codes: H04L 2101/395 Internet protocol multimedia private identity [IMPI]; Internet protocol multimedia public identity [IMPU]
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/72 Routing based on the source address
• CPC Class Codes: H04L 45/74 Address processing for routing
• CPC Class Codes: H04L 47/00 Traffic control in data switching networks arrangements for detecting or preventing errors in the information received H04L1/00
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/18 End to end
• CPC Class Codes: H04L 61/30 Managing network names, e.g. use of aliases or nicknames name-to-address mapping H04L61/45
• CPC Class Codes: H04L 61/4541 Directories for service discovery
• CPC Class Codes: H04L 61/4557 Directories for hybrid networks, e.g. including telephone numbers
• CPC Class Codes: H04L 61/4588 containing mobile subscriber information, e.g. home subscriber server [HSS]
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/1066 Session management
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04L 67/63 Routing a service request depending on the request content or context
• CPC Class Codes: H04L 69/327 in the session layer [OSI layer 5]
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 4/12 Messaging; Mailboxes; Announcements
• CPC Class Codes: H04W 40/00 : Communication routing or communication path finding
• CPC Class Codes: H04W 76/12 : Setup of transport tunnels
• CPC Class Codes: H04W 8/02 : Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
• CPC Class Codes: H04W 8/08 : Mobility data transfer
• CPC Class Codes: H04W 84/18 : Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

This invention relates to a method of routing for a message via an IMS system is disclosed. A message is received at an ICSCF. Address information is obtained for one of an application server, server or gateway for which said message is intended. The message is sent to said application server, server or gateway in accordance with said address information.

Claims

1. A method comprising:

receiving, at an interrogating call state control function, a message comprising a user identity;

querying, by the interrogating call state control function, at least one of a subscriber location function and a home subscriber server for a serving call state control function associated with the user identity;

receiving, from the at least one of the subscriber location function and the home subscriber server, an indication that the user identity is unknown; and

forwarding, by the interrogating call state control function, the message to a gateway separate from any serving call state control function, wherein the message is forwarded in response to receiving the indication that the user identity is unknown.

2. The method according to claim 1, wherein the interrogating call state control function obtains an address of the gateway from the at least one of the subscriber location function and the home subscriber server.

3. The method according to claim 1, wherein the interrogating call state control is configured with an address of the gateway.

4. An apparatus, comprising:

at least one processor; and

at least one memory, wherein the at least one processor and the at least one memory are configured to provide operations comprising;

receiving, at an interrogating call state control function, a message comprising a user identity;

querying, by the interrogating call state control function, at least one of a subscriber location function and a home subscriber server for a serving call state control function associated with the user identity;

receiving, from the at least one of the subscriber location function and the home subscriber server, an indication that the user identity is unknown; and

forwarding, by the interrogating call state control function, the message to a gateway separate from any serving call state control function, in response to receiving the indication that the user identity is unknown.

5. The apparatus according to claim 4, wherein the interrogating call state control function obtains an address of the gateway from the at least one of the subscriber location function and the home subscriber server.

6. The apparatus according to claim 4, wherein the interrogating call state control is configured with an address of the gateway.

7. A non-transitory computer readable medium comprising program code which when executed by at least one processor provides operations comprising:

receiving, at an interrogating call state control function, a message comprising a user identity;

querying, by the interrogating call state control function, at least one of a subscriber location function and a home subscriber server for a serving call state control function associated with the user identity;

receiving, from the at least one of the subscriber location function and the home subscriber server, an indication that the user identity is unknown; and

forwarding, by the interrogating call state control function, the message to a gateway separate from any serving call state control function, in response to receiving the indication that the user identity is unknown.

8. The non-transitory computer readable medium according to claim 7, wherein the interrogating call state control function obtains an address of the gateway from the at least one of the subscriber location function and the home subscriber server.

9. The non-transitory computer readable medium according to claim 7, wherein the interrogating call state control is configured with an address of the gateway.