Methods and devices for multi-link device (MLD) address discovery in a wireless network

Patent metadata

Field	Value
Publication number	US-12212963-B2
Application number	US-202318219001-A
Country	US
Kind code	B2
Filing date	Jul 6, 2023
Priority date	May 8, 2020
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

Abstract

Embodiments of the present invention provide methods and devices for discovering a multi-link device (MLD) on a wireless network. One exemplary approach includes transmitting a beacon frame including a MAC address of an AP MLD on the wireless network. The AP MLD includes a plurality of STAs operating on a plurality of wireless links and associated with a plurality of wireless MAC addresses. A password element is generated using a preconfigured password and the MAC address of the AP MLD, and authentication is performed using the password element.

First claim

What is claimed is:

1. A method of discovering a multi-link device (MLD) on a wireless network, the method comprising:
transmitting a beacon frame, wherein the beacon frame comprises a MAC address of an AP MLD on the wireless network, wherein the AP MLD comprises a plurality of STAs operating on a plurality of wireless links and associated with a plurality of wireless MAC addresses;
generating a password element using a preconfigured password and the MAC address of the AP MLD; and
performing authentication using the password element.

2. The method as described in claim 1 , wherein the AP MLD comprises a first transceiver operating on a first wireless link and a second transceiver operating on a second wireless link, and wherein further the transmitting a beacon frame for receipt by a wireless station STA MLD is performed over the first wireless link, and the performing authentication between the AP MLD and the STA MLD is performed over the second wireless link.

3. The method as described in claim 1 , further comprising associating the AP MLD and an STA MLD according to the authentication.

4. The method as described in claim 1 , wherein the beacon frame comprises message integrity check (MIC) integrity protection, and further comprising:
associating the AP MLD with the MAC addresses of the AP MLD; and
subsequent to the associating, transmitting a key used to generate the MIC integrity protection for receipt by an STA MLD.

5. The method as described in claim 1 , wherein the AP MLD comprises a plurality of transceivers operating on a plurality of wireless links, and further comprising transmitting a plurality of beacon frames comprising the MAC address of the AP MLD over the plurality of wireless links.

6. The method as described in claim 1 , wherein the MAC address of the AP MLD is an MLD MAC address of the AP MLD that identifies the AP MLD in the wireless network.

7. The method as described in claim 1 , wherein the beacon frame comprises a plurality of MAC addresses of the plurality of STAs of the AP MLD.

8. The method as described in claim 1 , further comprising receiving a commit message, wherein the generating a password element is performed responsive to the commit message.

9. A method of authenticating a multi-link device (MLD) on a wireless network at an access point (AP) MLD, the method comprising:
generating a password element using a MAC address of an AP MLD, wherein the AP MLD comprises a plurality of STAs operating on a plurality of wireless links; and
performing authentication using the password element, wherein the AP MLD comprises a first transceiver operating on a first wireless link and a second transceiver operating on a second wireless link, and wherein the performing authentication is performed over the second wireless link.

10. The method as described in claim 9 , further comprising associating the AP MLD with an STA MLD according to the authentication.

11. The method as described in claim 9 , wherein the performing authentication comprises at least one of:
an STA MLD transmitting a commit message of an authentication sequence; and
the AP MLD transmitting a confirm message of the authentication sequence.

12. The method as described in claim 9 , wherein the MAC address of the AP MLD is an MLD MAC address that uniquely identifies the AP MLD in the wireless network.

13. A wireless access point (AP) multi-link device (MLD) comprising:
a first transceiver operating on a first wireless link;
a second transceiver operating on a second wireless link;
a memory for storing data; and
a processor operable to:
cause the first transceiver to transmit a beacon frame for receipt by a wireless station (STA) MLD, wherein the beacon frame comprises a MAC address of the wireless AP MLD on the wireless network;
generate a password element using a preconfigured password using the MAC address of the wireless AP MLD; and
perform authentication using the password element.

14. The wireless AP MLD as described in claim 13 , wherein the processor is further operable to cause the first transceiver to transmit the beacon frame for receipt by the wireless STA MLD over the first wireless link.

15. The wireless AP MLD as described in claim 14 , wherein the processor is further operable to perform authentication over the second wireless link.

16. The wireless AP MLD as described in claim 13 , wherein the processor is further operable to associate the wireless STA MLD with the AP MLD according to the authentication.

17. The wireless AP MLD as described in claim 13 , wherein the beacon frame comprises message integrity check (MIC) integrity protection, and wherein the processor is further operable to:
associate the wireless AP MLD with the MAC addresses of the wireless AP MLD; and
subsequent to the associate, transmit a key used to generate the MIC integrity protection to the STA MLD.

18. The wireless AP MLD as described in claim 13 , wherein the processor is further operable to cause the second transceiver to transmit another beacon frame comprising the MAC address of the wireless AP MLD over the second wireless link.

19. The wireless AP MLD as described in claim 13 , wherein the MAC address of the wireless AP MLD is an MLD MAC address of the wireless AP MLD that identifies the wireless AP MLD in the wireless network.

20. The wireless AP MLD as described in claim 13 , wherein the wireless AP MLD comprises additional STAs operating on additional wireless links, and wherein the beacon frame comprises additional MAC addresses for the additional STAs of the wireless AP MLD.

Assignees

• Mediatek Singapore Pte Ltd

Inventors

• Bajko Gabor
• Seok Yongho
• Yee James Chih-Shi
• Lu Kai Ying

Classifications

• H04W8/005

  Discovery of network devices, e.g. terminals · CPC title

• H04W12/106

  Packet or message integrity · CPC title

• H04W8/26 Primary

  Network addressing or numbering for mobility support · CPC title

• H04W12/71

  Hardware identity · CPC title

• H04W48/16

  Discovering, processing access restriction or access information · CPC title