Method and apparatus for providing mobility for a voice over internet protocol service

• US 8,867,526 B2
• Filed: 05/17/2007
• Issued: 10/21/2014
• Est. Priority Date: 05/17/2007
• Status: Active Grant

• Current Assignee: AT&T Knowledge Ventures, L.P. (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Qiu, Chaoxin, Khan, Richard
• Primary Examiner(s): Nawaz, Asad
• Assistant Examiner(s): KASSIM, KHALED M
• Application Number:
  US11/750,086
• Publication Number:
  US 20080285544A1
• Time in Patent Office: 2,714 Days
• Field of Search: 370352-356, 370/389
• US Class Current: 370/352
• CPC Class Codes: H04L 61/5084 Providing for device mobility network addressing or numbering for mobility support in wireless networks H04W8/26; mobile IP H04W80/04
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1094 Inter-user-equipment sessions transfer or sharing
• CPC Class Codes: H04L 65/40 Support for services or applications
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 67/141 Setup of application sessions admission control or resource allocation in data switching networks H04L47/70
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04M 2242/04 for emergency applications
• CPC Class Codes: H04M 2242/30 Determination of the location of a subscriber
• CPC Class Codes: H04M 3/5116 for emergency applications
• 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 and an apparatus for providing mobility for a Voice over Internet Protocol Service (VoIP) provided on packet networks are disclosed. For example, the method receives a register request from a user endpoint device and retrieves an Access Point-address parameter from a contact header in the register request. The method then determines a physical location of an access point device in accordance with the Access Point-address parameter and updates location information for the user endpoint device in accordance with the physical location of the access point device.

Claims

1. A method for providing a service in a communication network, comprising:

receiving, by a processor, a register request from a user endpoint device via an access point device;

retrieving, by the processor, an access point-address parameter from a contact header in the register request, wherein the access point-address parameter is populated by the access point device when the access point-address parameter is not already populated with an address of another access point device;

determining, by the processor, a physical location of the access point device in accordance with the access point-address parameter, wherein the physical location of the access point device comprises a street address; and

updating, by the processor, location information for the user endpoint device in accordance with the physical location of the access point device, wherein the location information for the user endpoint device is used to support an emergency service, wherein the user endpoint device is capable of communicating with the access point device over a wireless connection, wherein the updating location information comprises;

determining the physical location of the access point device is not the same as a previous address for the user endpoint device; and

updating a location information server database for the user endpoint device using the physical location of the access point device when the physical location of the access point device is not the same as the previous address for the user endpoint device.

2. The method of claim 1, wherein the service is a voice over internet protocol service.

3. The method of claim 1, wherein the communication network is a packet network.

4. The method of claim 3, wherein the packet network is an internet protocol network.

5. The method of claim 1, wherein the access point-address parameter carries an internet protocol address associated with the access point device.

6. The method of claim 1, wherein the emergency service is an enhanced 911 service.

7. A non-transitory computer-readable medium storing a plurality of instructions which, when executed by a processor, cause the processor to perform operations for providing a service in a communication network, the operations comprising:

receiving a register request from a user endpoint device via an access point;

retrieving an access point-address parameter from a contact header in the register request, wherein the access point-address parameter is populated by the access point device when the access point-address parameter is not already populated with an address of another access point device;

determining a physical location of the access point device in accordance with the access point-address parameter, wherein the physical location of the access point device comprises a street address; and

updating location information for the user endpoint device in accordance with the physical location of the access point device, wherein the location information for the user endpoint device is used to support an emergency service, wherein the user endpoint device is capable of communicating with the access point device over a wireless connection, wherein the updating location information comprises;

determining the physical location of the access point device is not the same as a previous address for the user endpoint device; and

updating a location information server database for the user endpoint device using the physical location of the access point device when the physical location of the access point device is not the same as the previous address for the user endpoint device.

8. The non-transitory computer-readable medium of claim 7, wherein the service is a voice over internet protocol service.

9. The non-transitory computer-readable medium of claim 7, wherein the access point-address parameter carries an internet protocol address associated with the access point device.

10. A system for providing a service in a communication network, comprising:

a processor; and

a computer-readable medium storing a plurality of instructions which, when executed by the processor, cause the processor to perform operations, the operations comprising;

receiving a register request from a user endpoint device via an access point device;

retrieving an access point-address parameter from a contact header in the register request, wherein the access point-address parameter is populated by the access point device when the access point-address parameter is not already populated with an address of another access point device;

determining a physical location of the access point device in accordance with the access point-address parameter, wherein the physical location of the access point device comprises a street address; and

updating location information for the user endpoint device in accordance with the physical location of the access point device, wherein the location information for the user endpoint device is used to support an emergency service, wherein the user endpoint device is capable of communicating with the access point device over a wireless connection, wherein the updating location information comprises;

determining the physical location of the access point device is not the same as a previous address for the user endpoint device; and

updating a location information server database for the user endpoint device using the physical location of the access point device when the physical location of the access point device is not the same as the previous address for the user endpoint device.

11. The system of claim 10, wherein the service is a voice over internet protocol service.

12. The system of claim 10, wherein the access point-address parameter carries an internet protocol address associated with the access point device.

13. The system of claim 10, wherein the emergency service is an enhanced 911 service.