Initial scan enhancements

• US 9,877,272 B2
• Filed: 03/23/2015
• Issued: 01/23/2018
• Est. Priority Date: 03/25/2014
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Cherian, George, Patil, Abhishek Pramod, Abraham, Santosh Paul
• Primary Examiner(s): Adhami, Mohammad
• Application Number:
  US14/665,741
• Publication Number:
  US 20150282056A1
• Time in Patent Office: 1,037 Days
• Field of Search: None
• 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 84/12 WLAN [Wireless Local Area Networks]

Abstract

A method, an apparatus, and a computer program product for wireless communication are provided. In one aspect, an apparatus includes a processor configured to send a request to at least one station associated with the apparatus to scan for information related to at least one neighboring access point (AP) operating in a neighborhood of the apparatus and report the information to the apparatus, receive from the at least one associated station a report including the information, generate a neighborhood report related to the at least one neighboring AP, the neighborhood report including the information received from the at least one associated station, and transmit the neighborhood report to one or more other stations not associated with the apparatus to facilitate discovery of an AP of interest to the one or more other stations.

Claims

1. A method for wireless communication at an access point (AP), comprising:

sending a request to at least one station associated with the AP to scan for information related to at least one neighboring AP operating in a neighborhood of the AP and to report the information to the AP;

receiving from the at least one associated station an information report including the information related to the at least one neighboring AP operating in the neighborhood of the AP, the information report indicating service set identifier (SSID) information corresponding to the at least one neighboring AP;

modifying the SSID information corresponding to the at least one neighboring AP indicated by the received information report to generate a shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report;

generating a neighborhood report, the neighborhood report including a reduced neighbor report information element (IE) that indicates the shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report; and

transmitting the neighborhood report to one or more other stations not associated with the AP to facilitate discovery of an AP of interest to the one or more other stations based on the SSID information corresponding to the at least one neighboring AP.

2. The method of claim 1, wherein the neighborhood report is transmitted via at least one of:

a beacon frame;

a probe response frame;

or

a Fast Initial Link Setup (FILS) discovery frame as defined by IEEE 802.11ai.

3. The method of claim 2, wherein the neighborhood report is transmitted via the FILS discovery frame on a common channel different from an operating channel.

4. The method of claim 3, the transmitting comprising:

transmitting a clear-to-send (CTS) signal on the operating channel to disable communication on the operating channel prior to the FILS discovery frame being transmitted on the common channel different from the operating channel, wherein the AP is a single-radio AP.

5. The method of claim 1, wherein:

the request for the information is sent via a measurement request;

the information report from the at least one associated station including the information is received via a measurement report; and

the neighborhood report is transmitted via a reduced neighbor report.

6. The method of claim 5, wherein the measurement request is included in an IEEE 802.11 beacon request and the measurement report is included in an IEEE 802.11 beacon report.

25. The method of claim 1, wherein the shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report includes a hash value of the SSID corresponding to the at least one neighboring AP.

7. An access point (AP) for wireless communication, comprising:

means for receiving, from at least one station associated with the AP, an information report indicating service set identifier (SSID) information related to at least one neighboring AP operating in a neighborhood of the AP;

means for modifying the SSID information corresponding to the at least one neighboring AP indicated by the received information report to generate a shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report;

means for generating a neighborhood report, the neighborhood report including a reduced neighbor report information element (IE) that indicates the shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report; and

means for transmitting the neighborhood report to one or more other stations not associated with the AP to facilitate discovery of an AP of interest to the one or more other stations based on the SSID information corresponding to the at least one neighboring AP.

8. The AP of claim 7, wherein the neighborhood report is transmitted via at least one of:

a beacon frame;

a probe response frame;

or

a Fast Initial Link Setup (FILS) discovery frame as defined by IEEE 802.11ai.

9. The AP of claim 8, wherein the neighborhood report is transmitted via the FILS discovery frame on a common channel different from an operating channel.

10. The AP of claim 9, the means for transmitting configured to:

transmit a clear-to-send (CTS) signal on the operating channel to disable communication on the operating channel prior to the FILS discovery frame being transmitted on the common channel different from the operating channel, wherein the AP is a single-radio AP.

11. The AP of claim 7, further comprising:

means for sending a request to the at least one associated station to scan for information related to the at least one neighboring AP operating in the neighborhood of the AP and report the information to the AP, wherein;

the request for the information is sent via a measurement request,

the information report from the at least one associated station including the information is received via a measurement report, and

the neighborhood report is transmitted via a reduced neighbor report.

12. The AP of claim 11, wherein the measurement request is included in an IEEE 802.11 beacon request and the measurement report is included in an IEEE 802.11 beacon report.

26. The AP of claim 7, wherein the shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report includes a hash value of the SSID corresponding to the at least one neighboring AP.

13. An access point (AP) for wireless communication, comprising:

a memory; and

a processing system coupled to the memory and configured to;

receive, from at least one station associated with the AP, an information report including information related to at least one neighboring AP operating in a neighborhood of the AP, the information report indicating service set identifier (SSID) information corresponding to the at least one neighboring AP;

modify the SSID information corresponding to the at least one neighboring AP indicated by the received information report to generate a shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report;

generate a neighborhood report, the neighborhood report including a reduced neighbor report information element (IE) that indicates the shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report; and

transmit the neighborhood report to one or more other stations not associated with the AP to facilitate discovery of an AP of interest to the one or more other stations based on the SSID information corresponding to the at least one neighboring AP.

14. The AP of claim 13, wherein the neighborhood report is transmitted via at least one of:

a beacon frame;

a probe response frame;

or

a Fast Initial Link Setup (FILS) discovery frame as defined by IEEE 802.11ai.

15. The AP of claim 14, wherein the neighborhood report is transmitted via the FILS discovery frame on a common channel different from an operating channel.

16. The AP of claim 15, the processing system further configured to:

transmit a clear-to-send (CTS) signal on the operating channel to disable communication on the operating channel prior to the FILS discovery frame being transmitted on the common channel different from the operating channel, wherein the AP is a single-radio AP.

17. The AP of claim 13, wherein the processing system is further configured to:

send a request to the at least one associated station to scan for information related to the at least one neighboring AP operating in the neighborhood of the AP and report the information to the AP, wherein;

the request for the information is sent via a measurement request,

the information report from the at least one associated station including the information is received via a measurement report, and

the neighborhood report is transmitted via a reduced neighbor report.

18. The AP of claim 17, wherein the measurement request is included in an IEEE 802.11 beacon request and the measurement report is included in an IEEE 802.11 beacon report.

27. The AP of claim 13, wherein the shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report includes a hash value of the SSID corresponding to the at least one neighboring AP.

19. A non-transitory computer-readable medium of an access point (AP), the non-transitory computer-readable medium having instructions stored thereon that, when executed, cause the AP to:

receive, from at least one station associated with the AP, an information report including information related to at least one neighboring AP operating in a neighborhood of the AP, the information report indicating service set identifier (SSID) information corresponding to the at least one neighboring AP;

modify the SSID information corresponding to the at least one neighboring AP indicated by the received information report to generate a shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report;

generate a neighborhood report, the neighborhood report including a reduced neighbor report information element (IE) that indicates the shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report; and

transmit the neighborhood report to one or more other stations not associated with the AP to facilitate discovery of an AP of interest to the one or more other stations based on the SSID information corresponding to the at least one neighboring AP.

20. The non-transitory computer-readable medium of claim 19, wherein the neighborhood report is transmitted via at least one of:

a beacon frame;

a probe response frame;

or

a Fast Initial Link Setup (FILS) discovery frame as defined by IEEE 802.11ai.

21. The non-transitory computer-readable medium of claim 20, wherein the neighborhood report is transmitted via the FILS discovery frame on a common channel different from an operating channel.

22. The non-transitory computer-readable medium of claim 21, further comprising code to:

transmit a clear-to-send (CTS) signal on the operating channel to disable communication on the operating channel prior to the FILS discovery frame being transmitted on the common channel different from the operating channel, wherein the AP is a single-radio AP.

23. The non-transitory computer-readable medium of claim 19, further comprising code to:

send a request to the at least one associated station to scan for information related to the at least one neighboring AP operating in the neighborhood of the AP and report the information to the AP, wherein;

the request for the information is sent via a measurement request,

the information report from the at least one associated station including the information is received via a measurement report, and

the neighborhood report is transmitted via a reduced neighbor report.

24. The non-transitory computer-readable medium of claim 23, wherein the measurement request is included in an IEEE 802.11 beacon request and the measurement report is included in an IEEE 802.11 beacon report.

28. The non-transitory computer-readable medium of claim 19, wherein the shortened version of the SSID information corresponding to the at least one neighboring AP indicated by the received information report includes a hash value of the SSID corresponding to the at least one neighboring AP.