Method and system for beacon information provisioning, transmissions and protocol enhancements

• US 10,237,818 B2
• Filed: 03/01/2013
• Issued: 03/19/2019
• Est. Priority Date: 03/02/2012
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: Grandhi, Sudheer A., Ghosh, Monisha, Lou, Hanqing, Wang, Lei, Wang, Xiaofei, Zhang, Guodong
• Primary Examiner(s): Sefcheck, Gregory B
• Assistant Examiner(s): Van, Jenkey
• Application Number:
  US13/782,709
• Publication Number:
  US 20130230035A1
• Time in Patent Office: 2,209 Days
• Field of Search: None
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04B 7/0617 for beam forming
• 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 48/20 Selecting an access point

Abstract

A method for beacon information provisioning, transmissions and protocol enhancements includes defining multiple level beacons based on the attributes of beacon information fields/elements. A short beacon may be used in addition to a primary beacon in space-time block code (STBC) modes, non-STBC modes and in multiple bandwidth modes. The short beacons may also be used for Fast Initial Link Setup (FILS) and to extend system coverage range. Beacon transmissions may use adaptive modulation and coding set/scheme (MCS).

Claims

1. A method implemented by a station (STA) in wireless communication with a wireless local area network (WLAN), the method comprising:

identifying a SSID parameter in a MAC layer management entity (MLME) SCAN.request primitive;

receiving, from an access point (AP), a Fast Initial Link Setup (FILS) discovery frame comprising a field for a compressed SSID;

making a comparison based on the SSID parameter and the compressed SSID;

if a plurality of conditions is met, invoking a MLME-SCAN.confirm primitive, wherein the MLME-SCAN.confirm primitive comprises BSSDescriptionFromFILSDiscoveryFrameSet in response to dot11FILSActivated being true, the BSSDescriptionFromFILSDiscoveryFrameSet including an element indicating the compressed SSID, and wherein the plurality of conditions includes that the comparison based on the SSID parameter and the compressed SSID results in a match and that the MLME-SCAN.request includes a parameter of reportoption, wherein the parameter of reportoption has a value of immediate;

reporting the MLME-SCAN.confirm primitive; and

performing an FILS linking procedure based on the reported MLME-SCAN.confirm primitive.

2. The method of claim 1, wherein the FILS discovery frame comprises a version number information field.

3. The method of claim 1, wherein the FILS discovery frame comprises at least one of a Common Advertisement Group (CAG) number or an AP Configuration Sequence Number (AP-CSN).

4. The method of claim 1, the FILS discovery frame comprises a traffic information map (TIM).

5. The method of claim 1, wherein the FILS discovery frame includes a field of access network type.

6. The method of claim 5, wherein a MLME-scan.request primitive comprises a wildcard access network type, the method further comprising comparing the access network type received in the FILS discovery frame with the wildcard access network type, wherein the plurality of conditions include that the comparison of the access network type received in the FILS discovery frame with the wildcard access network type results a second match.

7. The method of claim 1, the method comprising selecting the AP for linking on a condition that the STA determines that sufficient network service information was obtained from a scan.

8. The method of claim 1, the method comprising selecting the AP for linking on a condition that the STA determines that sufficient network service information was obtained from a scan and that the AP satisfies STA requirements.

9. A station (STA) in wireless communication with a wireless local area network (WLAN), comprising:

a processor; and

a memory storing processor-executable instructions that, when executed by the processor, cause the processor to;

identify a SSID parameter in a MAC layer management entity (MLME) SCAN.request primitive;

receive;

from an access point (AP), a Fast Initial Link Setup (FILS) discovery frame comprising a field for a compressed SSID;

make a comparison based on the SSID parameter and the compressed SSID;

if a plurality of conditions is met, invoke a MLME-SCAN.confirm primitive wherein the MLME-SCAN.confirm primitive comprises BSSDescriptionFromFILSDiscoveryFrameSet in response to dot11FILSActivated being true, the BSSDescriptionFromFILSDiscoveryFrameSet including an element indicating the compressed SSID, and wherein the plurality of conditions includes that the comparison based on the SSID parameter and the compressed SSID results in a match and that the MLME-SCAN.request primitive includes a parameter of reportoption, wherein the parameter of reportoption has a value of immediate;

report the MLME-SCAN.confirm primitive; and

perform an FILS linking procedure based on the reported MLME-SCAN.confirm primitive.

10. The STA of claim 9, wherein the FILS discovery frame comprises a version number information field.

11. The STA of claim 9, wherein the FILS discovery frame comprises at least one of a Common Advertisement Group (CAG) number or an AP Configuration Sequence Number (AP-CSN).

12. The STA of claim 9, wherein the FILS discovery frame comprises a traffic information map (TIM).

13. The STA of claim 9, wherein the FILS discovery frame includes a field of access network type.

14. The STA of claim 13, wherein a MLME-scan.request primitive comprises a wildcard access network type, and the processor is further configured to compare the access network type received in the FILS discovery frame with the wildcard access network type, wherein the plurality of conditions include that the comparison of the access network type received in the FILS discovery frame with the wildcard access network type results a second match.

15. The STA of claim 9, the STA is further configured to select the AP for linking on a condition that the STA determines that sufficient network service information was obtained from a scan.

16. The STA of claim 9, the STA is further configured to select the AP for linking on a condition that the STA determines that sufficient network service information was obtained from a scan and that the AP satisfies STA requirements.