Method and apparatus for wireless communications

Patent metadata

Field	Value
Publication number	US-11800585-B2
Application number	US-202117387911-A
Country	US
Kind code	B2
Filing date	Jul 28, 2021
Priority date	Jul 28, 2020
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

Embodiments of a method and an apparatus for wireless communications are disclosed. In an embodiment, a method for wireless communications involves transmitting, by a first multi-link device (MLD) to a second MLD, a management frame on at least one of two links associated with the first MLD and the second MLD in a multi-link operation, receiving, by the second MLD from the first MLD, the management frame on at least one of the two links, and operating the second MLD according to the management frame received on at least one of the two links.

First claim

What is claimed is:

1. A method for wireless communications, the method comprising:
transmitting, by a first multi-link device (MLD) to a second MLD, a management frame on at least one of two links associated with the first MLD and the second MLD in a multi-link operation, wherein the management frame is a cross-link link level management frame that includes information of a corresponding link of the two links associated with the first MLD and the second MLD in the multi-link operation and is transmitted on another link of the two links associated with the first MLD and the second MLD in the multi-link operation, and wherein support capability of the cross-link link level management frame is announced via an MLD Extremely High Throughput (EHT) capability or an MLD Capabilities element;
receiving, by the second MLD from the first MLD, the management frame on at least one of the two links;
operating the second MLD according to the management frame received on at least one of the two links;
wherein the method involves transmitting the management frame via a cross-link transmission; and
wherein transmitting the management frame via the cross-link transmission involves:

transmitting an updated on-channel tunnel (OCT) Request frame on a reporting link; and encapsulating a reported link management frame.

2. The method of claim 1 , wherein the management frame is an MLD level management frame.

3. The method of claim 2 , wherein the MLD level management frame includes MLD level information.

4. The method of claim 2 , wherein the MLD level management frame includes MLD level information and link level information.

5. The method of claim 4 , wherein the link level information includes at least one of a link ID, a Group Temporal Key (GTK), an Integrity GTK (IGTK), and a Beacon IGTK (BIGTK) of at least one of the two links.

6. The method of claim 4 , wherein the MLD level management frame that includes the MLD level information and the link level information is at least one of a Security Association (SA) Query Request frame, an SA Query Response frame, a Wireless Network Management (WNM) Request frame, and a WNM Response frame.

7. The method of claim 1 , wherein the cross-link link level management frame includes a link ID that identifies the corresponding link for a frame body, and wherein the link ID is indicated in a Media Access Control (MAC) Header portion of the cross-link link level management frame.

8. The method of claim 1 , wherein the cross-link link level management frame includes a link ID that identifies the corresponding link for a frame body, and wherein the link ID is indicated in the frame body of the cross-link link level management frame.

9. The method of claim 1 , wherein when the cross-link link level management frame is transmitted on the corresponding link that uses a frame body, the link ID is not included in the frame body.

10. The method of claim 1 , wherein when the cross-link link level management frame is transmitted on another link that is different from the corresponding link that uses a frame body, the link ID is included in the frame body.

11. The method of claim 1 , wherein the management frame is a link-specific link level management frame that includes information of a corresponding link and is transmitted on the corresponding link.

12. The method of claim 11 , wherein the link-specific link level management frame is not transmitted via a cross-link transmission.

13. The method of claim 11 , wherein the link-specific link level management frame is at least one of a Time Priority Management frame, a management frame with a Timestamp field, a Transmit Power Control (TPC) Request frame, a TPC Response frame, a Link Measurement Request frame, a Link Measurement Response frame, a Target Wake Time (TWT) Information frame, an Operating Mode Notification frame, and a Spatial Multiplexing (SM) Power Save frame.

14. The method of claim 1 , wherein the management frame transmitted via the cross-link transmission includes:
information of one of the two links; and
a link ID in a MAC Header portion of the management frame.

15. The method of claim 1 , wherein the management frame transmitted via the cross-link transmission includes:
information of more than one of the two links; and
a link ID in a frame body of the management frame.

16. The method of claim 1 , wherein at least one of the first MLD and the second MLD operates in accordance with an 802.11be communications protocol.

17. A wireless communications system, the wireless communications system comprising:
a first multi-link device (MLD), wherein the first MLD includes a processor configured to:
transmit, to a second MLD, a management frame on at least one of two links associated with the first MLD and the second MLD in a multi-link operation, wherein the management frame is a cross-link link level management frame that includes information of a corresponding link of the two links associated with the first MLD and the second MLD in the multi-link operation and is transmitted on another link of the two links associated with the first MLD and the second MLD in the multi-link operation, and wherein support capability of the cross-link link level management frame is announced via an MLD Extremely High Throughput (EHT) capability or an MLD Capabilities element; and
a second MLD, wherein the second MLD includes another processor configured to:
receive, from the first MLD, the management frame on at least one of the two links;
operate according to the management frame received on at least one of the two links;
wherein the method involves transmitting the management frame via a cross-link transmission; and
wherein transmitting the management frame via the cross-link transmission involves:

transmitting an updated on-channel tunnel (OCT) Request frame on a reporting link; and encapsulating a reported link management frame.

Assignees

• Nxp Usa Inc

Inventors

• Chu Liwen
• Kumar Manish
• Zhang Hongyuan
• Lou Huiling

Classifications

• H04W76/15 Primary

  Setup of multiple wireless link connections · CPC title

• H04W76/12

  Setup of transport tunnels · CPC title

• H04W80/02

  Data link layer protocols · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W88/10

  adapted for operation in multiple networks, e.g. multi-mode access points · CPC title