Discovering network information available via wireless networks

• US 8,750,180 B2
• Filed: 09/16/2011
• Issued: 06/10/2014
• Est. Priority Date: 09/16/2011
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: McCann, Stephen, Montemurro, Michael Peter
• Primary Examiner(s): LEVITAN, DMITRY
• Application Number:
  US13/234,799
• Publication Number:
  US 20130070644A1
• Time in Patent Office: 998 Days
• Field of Search: 370310-312, 370/328, 370/349, 370/464, 709227-229, 709/249
• US Class Current: 370/310
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

Network information may be discoverable without requiring a connection to that network. For example, Access Network Query Protocol (“ANQP”) may allow a device to discover information about a network prior to the device associating with that network. In other words, ANQP allows a network terminal to request additional network information prior to establishing network capability. The additional network information that may be discoverable includes network latency, cellular capabilities, hotspot capabilities, mobility capabilities, neighbor reports, station identification, and multiple hotspot session identification.

Claims

1. A method for communicating in a wireless network comprising:

transmitting, prior to a wireless device associating with a first access point (AP), a request from the wireless device to the first access point (AP) for a neighbor report on any neighboring APs, wherein any neighboring AP and the first AP comprise APs within a same basic service set (BSS) or a same extended service set (ESS); and

receiving at the wireless device, prior to the wireless device associating with the first access point (AP), a response from the first AP, wherein the response comprises the neighbor report on a neighboring AP and includes information describing the neighboring AP.

2. The method of claim 1 wherein the information describing the AP comprises an identifier indicative of a BSS associated with the neighboring AP, reachability information indicative of whether the neighboring AP indicated by the BSS is reachable by the wireless device that requested the neighbor report, and security information indicative of whether the neighboring AP supports a same security provisioning as utilized by the wireless device.

3. The method of claim 1 wherein the request and the response comprise access network query protocol (“

ANQP”

) messages.

4. The method of claim 3 wherein the ANQP messages are transmitted using an authentication protocol.

5. The method of claim 1 wherein the transmitting and receiving prior to the wireless device associating with the first AP occurs during a network discovery operation of the wireless device.

6. The method of claim 1 further comprising:

comparing, at the wireless device, the information describing the neighboring AP with information describing the AP; and

determining, at the wireless device, to associate with one of the first AP or the neighboring AP based on the comparison.

7. A method at a first access point (AP) associated with a wireless local area network comprising:

receiving, prior to association of a wireless device with the first AP, a request at the AP from the wireless device for a neighbor report on any neighboring APs, wherein any neighboring AP and the first AP comprise APs within a same basic service set (BSS) or a same extended service set (ESS);

transmitting, prior to association of the wireless device with the first AP, a response from the first AP wherein the response comprises the neighbor report on a neighboring AP and includes information describing the neighboring AP.

8. The method of claim 7 wherein the request and the response are communicated using an access network query protocol (“

ANQP”

).

9. The method of claim 8 wherein the neighbor report is communicated as an ANQP message that is transmitted using an extensible authentication protocol.

10. The method of claim 7 wherein the information describing the neighboring AP comprises an identifier indicative of a BSS associated with the neighboring AP, reachability information indicative of whether the neighboring AP indicated by the BSS is reachable by the wireless device that requested the neighbor report, and security information indicative of whether the neighboring AP supports a same security provisioning as utilized by the wireless device.

11. A wireless device comprising:

a processor interconnected with a memory, the processor configured to;

transmit, prior to the wireless device associating with a first access point (AP), a request from the wireless device to the first AP for a neighbor report on any neighboring APs, wherein any neighboring AP and the first AP comprise APs within a same basic service set (BSS) or a same extended service set (ESS); and

receive at the wireless device, prior to the wireless device associating with the first access point (AP), a response from the first AP, wherein the response comprises the neighbor report on a neighboring AP and includes information describing the neighboring AP.

12. The wireless device of claim 11 wherein the information describing the neighboring AP comprises an identifier indicative of a BSS associated with the neighboring AP, reachability information indicative of whether the neighboring AP indicated by the BSS is reachable by the wireless device that requested the neighbor report, and security information indicative of whether the neighboring AP supports a same security provisioning as utilized by the wireless device.

13. The wireless device of claim 11 wherein the request and the response comprise access network query protocol (“

ANQP”

) messages.

14. The wireless device of claim 13 wherein the ANQP messages are transmitted using an authentication protocol.

15. The wireless device of claim 11 wherein the processor is further configured to:

compare the information describing the neighboring AP with information describing the first AP; and

determine to associate with one of the first AP or the neighboring AP based on the comparison.

16. A first access point (AP) associated with a wireless local area network comprising:

a processor interconnected with a memory, the processor configured to;

receive, prior to association of a wireless device with the first AP, a request at the AP from the wireless device for a neighbor report on any neighboring APs, wherein any neighboring AP and the first AP comprise APs within a same basic service set (BSS) or a same extended service set (ESS);

transmit, prior to association of the wireless device with the first AP, a response from the first AP wherein the response comprises the neighbor report on a neighboring AP and includes information describing the neighboring AP.

17. The first AP of claim 16 wherein the information describing the neighboring AP comprises an identifier indicative of a BSS associated with the neighboring AP, reachability information indicative of whether the neighboring AP indicated by the BSS is reachable by the wireless device that requested the neighbor report, and security information indicative of whether the neighboring AP supports a same security provisioning as utilized by the wireless device.