Battery-efficient generic advertising service for wireless mobile devices

• US 7,912,023 B2
• Filed: 03/12/2009
• Issued: 03/22/2011
• Est. Priority Date: 04/18/2006
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Stephenson, David Sheldon, O'Hara, Robert B. Jr.
• Primary Examiner(s): Afshar; Kamran
• Application Number:
  US12/403,050
• Publication Number:
  US 20090175207A1
• Time in Patent Office: 740 Days
• Field of Search: 370/310, 370/311, 370/318, 370/328, 370/338, 370/352, 370/277, 370/392, 370/395.21, 370/395.3, 370/395.52, 455/422.1, 455/452.2, 455/522, 455/69, 455/574, 713/320
• US Class Current: 370/338
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

In one embodiment, a method for acquiring service provider information includes querying a wireless network for service provider information, receiving an advertisement response containing advertising service scheduling information, and configuring a power conservation mode responsive to the advertising service scheduling information.

Claims

1. A data storage medium encoded with computer executable instructions for acquiring information from a wireless network, the computer executable instructions when executed operable to cause a processor to:

prior to associating with a wireless network, transmit a query to the wireless network for network services information;

receive a response containing advertising service scheduling information, the advertising service scheduling information comprising a schedule for delivery of the network services information;

configure a power conservation mode responsive to the advertising service scheduling information;

exit, responsive to the advertising scheduling information, the power conservation mode to receive one or more messages including the network services information; and

use the network services information to establish a wireless connection to the wireless network.

2. The data storage medium of claim 1 wherein the network services information comprises service provider information.

3. The data storage medium of claim 1 wherein the computer executable instructions are operable to scan for one or more wireless networks that support an advertising service capability.

4. The data storage medium of claim 1 wherein the query is a regular expression query for subscription service provider information.

5. The data storage medium of claim 1 wherein the query is embodied in an information element appended to a probe request transmitted to the wireless network.

6. The data storage medium of claim 5 wherein the probe request has a non-globally unique source address.

7. The data storage medium of claim 1 wherein the computer executable instructions are operable to responsive to the received service provider information, conditionally associate with the wireless network.

8. The data storage medium of claim 1 wherein the computer executable instructions are further operable to cause the processor to:

de-power a radio of a wireless network interface; and

re-power the radio to receive the network services information.

9. The data storage medium of claim 1 wherein the query identifies a particular service provider.

10. The data storage medium of claim 1 wherein the query identifies a class of service providers.

11. A method for acquiring information from a wireless network, the method comprising:

prior to associating with a wireless network, transmitting a query to the wireless network for network services information;

receiving a response containing advertising service scheduling information, the advertising service scheduling information comprising a schedule for delivery of the network services information;

configuring a power conservation mode responsive to the advertising service scheduling information;

exiting, responsive to the advertising scheduling information, the power conservation mode to receive one or more messages including network services information; and

using the network services information to establish a wireless connection to the wireless network.

12. The method of claim 11 wherein the network services information comprises service provider information.

13. The method of claim 11 further comprising scanning for one or more wireless networks that support an advertising service capability.

14. The method of claim 11 wherein the query is a regular expression query for subscription service provider information.

15. The method of claim 11 wherein the query is embodied in an information element appended to a probe request transmitted to the wireless network.

16. The method of claim 15 wherein the probe request has a non-globally unique source address.

17. The method of claim 11 further comprising:

responsive to the received service provider information, conditionally associating with the wireless network.

18. The method of claim 11 wherein the computer executable instructions are further operable to cause the processor to:

de-powering a radio of a wireless network interface; and

re-powering the radio to receive the network services information.

19. The method of claim 11 wherein the query identifies a particular service provider.

20. The method of claim 11 wherein the query identifies a class of service providers.

21. A data storage medium encoded with computer executable instructions for providing service provider information, the computer executable instructions when executed operable to cause a processor to:

access a service provider query transmitted by a wireless client, prior to establishing a wireless connection with the wireless client;

transmit an advertisement response containing advertising service scheduling information to the wireless client, the advertising service scheduling information comprising a schedule for transmission of service provider information responsive to the query;

obtain the service provider information responsive to the query; and

transmit, after obtaining the service provider information, one or more advertising frames containing the service provider information.

22. The data storage medium of claim 21 wherein the computer executable instructions are further operable to cause the processor to apply one or more policies to the service provider query.

23. The data storage medium of claim 21 wherein the computer executable instructions are further operable to cause the processor to indicate an advertising service capability to one or more wireless clients.

24. A method for providing service provider information to one or more wireless clients, the method comprising:

accessing, at an access point, a service provider query transmitted by a wireless client, prior to establishing a wireless connection between the wireless client and the access point;

transmitting an advertisement response containing advertising service scheduling information to the wireless client, the advertising service scheduling information comprising a schedule for transmission of service provider information responsive to the query;

obtaining the service provider information responsive to the query; and

transmitting, after obtaining the service provider information, one or more advertising frames containing the service provider information.

25. The method of claim 24 further comprising applying one or more policies to the service provider query.

26. The method of claim 24 further comprising indicating an advertising service capability to one or more wireless clients.