Pre-association discovery

• US 8,817,662 B2
• Filed: 09/30/2011
• Issued: 08/26/2014
• Est. Priority Date: 10/20/2010
• Status: Active Grant

• Current Assignee: Marvell Asia Pte Limited (Marvell Technology Group Limited)
• Original Assignee: Marvell World Trade Limited (Marvell Technology Group Limited)
• Inventors: Mahaffy, Brian, Stokes, DeVerl, Asbury, Ray
• Primary Examiner(s): Rinehart, Mark
• Assistant Examiner(s): BROCKMAN, ANGEL T
• Application Number:
  US13/249,740
• Publication Number:
  US 20120099476A1
• Time in Patent Office: 1,061 Days
• Field of Search: 370/254, 370/338
• US Class Current: 370/254
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

The present disclosure describes techniques for pre-association discovery. In some aspects a frame having information useful to identify a service provided by a wireless device is received, the service provided by the wireless device is identified based on the information of the frame and known service identification information, and the identified service is associated with the wireless device effective to enable use of the identified service.

Claims

1. A method comprising:

receiving, via a wireless interface, a frame from a wireless device, the frame including information useful to identify a name of a wireless network with which the wireless device is associated and a service provided by the wireless device, the information useful to identify the name of the wireless network and the service provided by the wireless device being included in a service set identifier (SSID) field of the frame, the service provided by the wireless device being a service other than access to the wireless network;

identifying the service provided by the wireless device based on the information in the SSID field of the frame and known service identification information; and

associating the identified service with the wireless device effective to enable use of the identified service via the wireless interface.

2. The method of claim 1, further comprising configuring the wireless interface to scan for frames broadcast by wireless devices.

3. The method of claim 1, wherein the wireless network is provided by the wireless device and the method further comprises initiating access of the identified service by causing the wireless interface to associate with the wireless network provided by the wireless device.

4. The method of claim 1, wherein the wireless interface is not associated with a wireless network provided by the wireless device during the acts of receiving, identifying, or associating.

5. The method of claim 1, wherein the wireless interface is a wireless local area network (WLAN) interface compliant with an IEEE 802.11 standard.

6. The method of claim 1, wherein the information useful to identify the name of the wireless network is included in a first portion of the SSID field and the information useful to identify the service is patterned or encoded within a second portion of the SSID field such that the second portion of the SSID field is useful to identify the service based on the known service identification information.

20. The method of claim 1, wherein the service provided by the wireless device is one of a printing service, a scanning service, a data storage service, a streaming media service, or a media presentation service.

7. A method comprising:

broadcasting, from a wireless interface providing a wireless network, a frame including information identifying a name of the wireless network and a service that is accessible via the wireless network, the information identifying the name of the wireless network and the service being included in a service set identifier (SSID) field of the frame, the service accessible via the wireless network being a service other than network access;

receiving a request to associate with the wireless network from a wireless device capable of accessing the service; and

granting the request to associate with the wireless network effective to enable the wireless device to access the service over the wireless network.

8. The method of claim 7, further comprising configuring the wireless interface to provide the wireless network.

9. The method of claim 7, further comprising receiving data related to the service from the wireless device in response to enabling access to the service.

10. The method of claim 7, wherein the wireless interface is compliant with an IEEE 802.11 specification and is configured as an access point when providing the wireless network.

11. The method of claim 7, wherein the SSID field is useful to identify the name of the wireless network and a portion of the SSID is encoded with the information identifying the service such that the portion of the SSID is useful to identify the service accessible via the wireless network.

12. The method of claim 7, wherein the wireless device has information for identifying the service that is complementary to the information of the frame.

13. The method of claim 7, wherein the service accessible via the wireless network comprises one of a printing service, a scanning service, a data storage service, a streaming media service, or a media presentation service.

14. One or more computer-readable memory devices comprising computer-executable instructions that, responsive to execution, implement a wireless-service manager to:

receive a request for a service from an application;

configure, responsive to the request for the service, a wireless interface to receive beacons identifying services accessible via respective wireless networks, the services being services other than access to the respective wireless networks;

receive one or more of the beacons identifying services accessible via the respective wireless networks, each of the one or more beacons having a respective service set identifier (SSID) field that includes information useful to identify a name of a respective wireless network and a service available via the respective wireless networks;

determine, based on the one or more received beacons, which service accessible via the respective wireless networks corresponds with the request for the service; and

cause the wireless interface to associate with the wireless network through which the corresponding service is accessible to enable fulfillment of the request for the service.

15. The one or more computer-readable memory devices of claim 14, wherein the SSID fields of the beacons identifying the names and the services include portions of hexadecimal numbers that are encoded or patterned with the information useful to identify the services.

16. The one or more computer-readable memory devices of claim 14 comprising additional computer-executable instructions that, responsive to execution, further implement the wireless-service manager to present a list of corresponding services via a user interface and receive input from the user interface to select one of the corresponding services to access.

17. The one or more computer-readable memory devices of claim 14, wherein the determining is performed using a regular expression pattern matching algorithm.

18. The one or more computer-readable memory devices of claim 14, wherein the request for service includes one of a print request, scan request, data storage request, or media presentation request.

19. The one or more computer-readable memory devices of claim 14, wherein the services accessible via respective wireless networks include a printing service, a scanning service, a data storage service, a streaming media service, or a media presentation service.