Apparatus and method for responding to unlicensed network failure

• US 20070099653A1
• Filed: 07/06/2006
• Published: 05/03/2007
• Est. Priority Date: 10/27/2005
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola Mobility, Inc. (Lenovo Group Ltd.)
• Inventors: Parron, Jerome, Otting, Marcia
• Granted Patent: US 7,822,438 B2
• Time in Patent Office: Days
• US Class Current: 455/552.1
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor
• CPC Class Codes: H04W 74/00 Wireless channel access
• CPC Class Codes: H04W 76/19 Connection re-establishment
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

An apparatus and method for responding to unlicensed network failure. A failure in a connection to an unlicensed wireless local area network controller can be detected. A wireless local area network access point connection to the unlicensed wireless local area network controller can be released. An attempt can be made to access wireless wide area network services.

Claims

1. A method in a wireless communication device, comprising:

operating on a wireless local area network via a wireless local area network access point;

detecting a failure in a connection to an unlicensed wireless local area network controller;

releasing a wireless local area network access point connection based on detecting the failure; and

attempting to access wireless wide area network services.

2. The method according to claim 1, further comprising starting a reconnection procedure restart timer in response to detecting the failure.

3. The method according to claim 2, further comprising attempting an unlicensed wireless local area mobile access radio resource discovery procedure when the reconnection procedure restart timer expires.

4. The method according to claim 1, wherein detecting a failure in connection to the unlicensed network controller comprises determining a discovery attempt timer has expired during an unlicensed mobile access radio resource discovery procedure.

5. The method according to claim 1, wherein detecting a failure in connection to the unlicensed network controller comprises detecting a poor wireless local area network link between the wireless communication device and a wireless local area network access point.

6. The method according to claim 1, wherein detecting a failure in connection to the unlicensed network controller comprises detecting an inability to resolve a unlicensed wireless local area network controller address given in a fully qualified domain name format.

7. The method according to claim 1, wherein detecting a failure in connection to the unlicensed network controller comprises detecting a routing problem with a transmission control stack at the unlicensed wireless local area network controller.

8. The method according to claim 1, wherein detecting a failure in connection to the unlicensed network controller comprises detecting an issue with a security protocol.

9. The method according to claim 1, wherein the wireless local area network comprises an wireless local area network selected from the group of a Bluetooth network and an 802.11 network.

10. The method according to claim 1, wherein wireless wide area network services comprise services selected from the group of global system for mobile communication network services, code division multiple access network services, and time division multiple access network services.

11. A wireless communication device comprising:

an unlicensed wireless local area network mobile access radio resource module configured to detect a failure in a connection to an unlicensed network controller and release a wireless local area network access point connection to the unlicensed wireless local area network controller;

a timer coupled to the unlicensed wireless local area network mobile access radio resource module, wherein the unlicensed wireless local area network mobile access radio resource module starts a timer in response to detecting the failure; and

a mobility management module configured to attempt access to wireless wide area network services in response to receiving a signal from the unlicensed wireless local area network mobile access radio resource module indicating the failure in the connection to the unlicensed network controller.

12. The wireless communication device according to claim 11, wherein the timer comprises a registration procedure restart timer.

13. The wireless communication device according to claim 12, wherein the unlicensed wireless local area network mobile access radio resource module is further configured to attempt an unlicensed wireless local area mobile access radio resource discovery procedure when the registration procedure restart timer expires.

14. The wireless communication device according to claim 11, further comprising a discovery attempt timer,

wherein the unlicensed wireless local area network mobile access radio resource module is further configured to detect a failure in connection to the unlicensed network controller by determining the discovery attempt timer has expired during an unlicensed mobile access radio resource discovery procedure.

15. The wireless communication device according to claim 11, wherein the unlicensed wireless local area network mobile access radio resource module is further configured to detect a failure in connection to the unlicensed network controller by one selected from the group of detecting a poor wireless local area network link between the wireless communication device and a wireless local area network access point, detecting an inability to resolve a unlicensed wireless local area network controller address given in a fully qualified domain name format, detecting a routing problem with a transmission control stack at the unlicensed wireless local area network controller, and detecting an issue at a secure gateway level.

16. The wireless communication device according to claim 11, wherein the resource module comprises a resource module selected from the group of a Bluetooth network resource module and an 802.11 network resource module.

17. The wireless communication device according to claim 11, wherein wireless wide area network services comprise services selected from the group of global system for mobile communication network services, code division multiple access network services, and time division multiple access network services.

18. The wireless communication device according to claim 11, wherein the unlicensed wireless local area network mobile access radio resource module is further configured to report the failure in a connection to an unlicensed wireless local area network controller to the mobility management module.

19. A wireless communication device comprising:

a controller configured to control the operations of the wireless communication device;

a transceiver coupled to the controller;

a discovery attempt timer configured to start a timing procedure in response to a first discovery request;

an unlicensed wireless local area network mobile access radio resource module coupled to the controller and the discovery attempt timer, the unlicensed wireless local area network mobile access radio resource module configured to initiate the first discovery request, detect a failure in a connection to an unlicensed network controller in response to a the expiration of the discover attempt timer, and release a wireless local area network access point connection to the unlicensed network controller prior to initiating a second discovery request;

a discovery procedure restart timer coupled to the controller and the unlicensed wireless local area network mobile access radio resource module, wherein the unlicensed wireless local area network mobile access radio resource module starts the discovery procedure restart timer in response to detecting the failure; and

a mobility management module coupled to the unlicensed wireless local area network mobile access radio resource module, the mobility management module configured to attempt access to wireless wide area network services in response to receiving a signal from the unlicensed wireless local area network mobile access radio resource module indicating the failure in the connection to the unlicensed network controller.

20. The wireless communication device according to claim 19, wherein the unlicensed wireless local area network mobile access radio resource module is further configured to attempt an unlicensed wireless local area mobile access radio resource discovery procedure when the discovery procedure restart timer expires.