Enhanced frame exchange and multi-link device messaging for secure communications

Patent metadata

Field	Value
Publication number	US-11973679-B2
Application number	US-202117392923-A
Country	US
Kind code	B2
Filing date	Aug 3, 2021
Priority date	Aug 3, 2020
Publication date	Apr 30, 2024
Grant date	Apr 30, 2024

Abstract

This disclosure describes systems, methods, and devices related to enhanced frame exchange. A device may generate a first subset of a plurality of fields, wherein the first subset is mandatory in a probe request frame. The device may generate a second subset of the plurality of fields, wherein the second subset is optional in the probe request frame regardless of capability information of the device. The device may generate the probe request frame comprising the first subset and the second subset. The device may cause to send the probe request frame to an access point (AP) device.

First claim

What is claimed is:

1. A device, the device comprising processing circuitry coupled to storage, the processing circuitry configured to:
generate a first subset of a plurality of fields, wherein the first subset is mandatory in a probe request frame;
generate a second subset of the plurality of fields, wherein the second subset is optional in the probe request frame regardless of capability information of the device, wherein the second subset is comprised of, a request element, an extended request element, a fast initial link setup (FILS) request parameter element, a short SSID list element, one or more vendor specific elements, a probe request variant multiple links (ML) element, and a known BSSID element;
generate the probe request frame comprising the first subset and the second subset; and
cause to send the probe request frame to an access point (AP) device.

2. The device of claim 1 , wherein the first subset is comprised of only a service set identifier (SSID) element.

3. The device of claim 1 , wherein the device is a first STA that is affiliated with a non-AP multi-link device (MLD).

4. The device of claim 3 , wherein the processing circuitry is further configured to:
maintain an MLD address of the non-AP MLD; and
randomize a medium access control (MAC) address of the first STA of the non-AP MLD.

5. The device of claim 3 , wherein the processing circuitry is further configured to:
send a frame to an associated AP MLD, wherein the frame comprises an updated MAC address of the first STA; and
receive a response frame from the associated AP MLD confirming the updated MAC address of the first STA.

6. The device of claim 5 , wherein the updated MAC address of the first STA is updated based on a predetermined pattern for a predetermined period between the non-AP MLD and the associated AP MLD.

7. The device of claim 5 , wherein the processing circuitry is further configured to receive a frame from the associated AP MLD to change an assigned association identifier (AID) of the non-AP MLD.

8. The device of claim 3 , wherein the processing circuitry is further configured to have the first STA of the non-AP MLD set a TXVECTOR parameter SCRAMBLER_RESET to RESET_SCRAMBLER on a next transmitted physical layer (PHY) protocol data unit (PPDU).

9. The device of claim 3 , wherein the processing circuitry is further configured to receive a random offset for a sequence number (SN); and
add a random offset modular having a maximum size of a sequence number space to all recipient record of the non-AP MLD that uses the SN number.

10. The device of claim 3 , wherein the processing circuitry is further configured to perform message filtering on incoming frames based on a receiving station address (RA) and on a transmitting station address (TA), wherein the RA matches a MAC address of a first STA of the non-AP MLD, and wherein the TA matches the MAC address of a first AP of an associated AP MLD.

11. A non-transitory computer-readable medium storing computer-executable instructions which when executed by one or more processors result in performing operations comprising:
generating a first subset of a plurality of fields, wherein the first subset is mandatory in a probe request frame;
generating a second subset of the plurality of fields, wherein the second subset is optional in the probe request frame regardless of capability information of a device, wherein the second subset is comprised of, a request element, an extended request element, a fast initial link setup (FILS) request parameter element, a short SSID list element, one or more vendor specific elements, a probe request variant multiple links (ML) element, and a known BSSID element;
generating the probe request frame comprising the first subset and the second subset; and
causing to send the probe request frame to an access point (AP) device.

12. The non-transitory computer-readable medium of claim 11 , wherein the first subset is comprised of only a service set identifier (SSID) element.

13. The non-transitory computer-readable medium of claim 11 , wherein the device is a first STA that is affiliated with a non-AP multi-link device (MLD).

14. The non-transitory computer-readable medium of claim 13 , wherein the operations further comprise:
maintaining an MLD address of the non-AP MLD; and
randomizing a medium access control (MAC) address of the first STA of the non-AP MLD.

15. The non-transitory computer-readable medium of claim 13 , wherein the operations further comprise:
sending a frame to an associated AP MLD, wherein the frame comprises an updated MAC address of the first STA; and
receiving a response frame from the associated AP MLD confirming the updated MAC address of the first STA.

16. The non-transitory computer-readable medium of claim 15 , wherein the updated MAC address of the first STA is updated based on a predetermined pattern for a predetermined period between the non-AP MLD and the associated AP MLD.

17. The non-transitory computer-readable medium of claim 13 , wherein the operations further comprise: to have the first STA of the non-AP MLD set a TXVECTOR parameter SCRAMBLER_RESET to RESET_SCRAMBLER on a next transmitted physical layer (PHY) protocol data unit (PPDU).

18. A method comprising:
generating, by one or more processors, a first subset of a plurality of fields, wherein the first subset is mandatory in a probe request frame;
generating a second subset of the plurality of fields, wherein the second subset is optional in the probe request frame regardless of capability information of a device, wherein the second subset is comprised of, a request element, an extended request element, a fast initial link setup (FILS) request parameter element, a short SSID list element, one or more vendor specific elements, a probe request variant multiple links (ML) element, and a known BSSID element;
generating the probe request frame comprising the first subset and the second subset; and
causing to send the probe request frame to an access point (AP) device.

Assignees

• Intel Corp

Inventors

• Huang Po-Kai
• Stacey Robert
• Bravo Daniel
• Ouzieli Ido
• Alexander Danny
• Hareuveni Ofer

Classifications

• H04L43/12 Primary

  Network monitoring probes · CPC title

• H04W88/08

  Access point devices · CPC title

• H04W48/16 Primary

  Discovering, processing access restriction or access information · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04L43/10

  Active monitoring, e.g. heartbeat, ping or trace-route · CPC title