Wireless communication method and device

Patent metadata

Field	Value
Publication number	US-2024214936-A1
Application number	US-202418598966-A
Country	US
Kind code	A1
Filing date	Mar 7, 2024
Priority date	Sep 9, 2021
Publication date	Jun 27, 2024
Grant date	—

Abstract

The present application provides a wireless communication method and a device. The method includes: a first AP affiliated with an AP MLD transmitting a first message over a first link to a first STA affiliated with a Non-AP MD, wherein the first message is configured to indicate whether a second AP affiliated with the AP MLD is in a wake-up state or an active state; and/or the first AP receives, over the first link, a second message transmitted from the first STA, wherein the second message is configured to request the second AP affiliated with the AP MLD to be in the wake state or the active state, or the second message is configured to indicate whether a second STA is in the wake state or the active state.

First claim

1 . A wireless communication method, comprising:
a first access point (AP) affiliated with an access point multi-link device (AP MLD) transmitting a first message over a first link to a first station (STA) affiliated with a non-access point multi-link device (Non-AP MLD), wherein the first message is configured to indicate whether a second AP affiliated with the AP MLD is in a wake state or an active state; and/or the first AP affiliated with the AP MLD receiving, over the first link, a second message sent from the first STA affiliated with the Non-AP MLD, wherein the second message is configured to request the second AP affiliated with the AP MLD to be in the wake state or the active state, or the second message is configured to indicate whether a second STA affiliated with the Non-AP MLD is in the wake state or the active state; wherein the first AP and the first STA are over the first link, the first link is a primary link, the second AP and the second STA are over a second link, and the second link is a secondary link.

2 . The method as claimed in claim 1 , wherein
the AP MLD controlling the second AP to be in the wake state or the active state at a first time point, wherein a location of the first time point is before a time point when the first AP transmits the first message or after a time point when the second message is received.

3 . The method as claimed in claim 2 , wherein
in response to the location of the first time point being before the time point when the first AP transmits the first message, and in response to the second AP being in the wake state or the active state, the method further comprises:
the AP MLD determining that the second AP has not received the second message within a first time duration, and controlling the second AP to enter a sleeping state; and/or
the AP MLD determining that a link used to transmit a pending traffic does not include the second link, and controlling the second AP to enter a sleeping state.

4 . The method as claimed in claim 1 , wherein
the first message comprises a first frame, wherein the first frame is sent in response to a pending traffic to be transmitted to the Non-AP MLD being buffered in the AP MLD, and the first frame is configured to indicate that, a link on which the pending traffic is mapped includes the second link.

5 . The method as claimed in claim 4 , wherein
the first frame carries a first indication message and/or a second indication message; and the first indication message is configured to indicate that, the pending traffic is a downlink traffic to be transmitted to the Non-AP MLD, and the second indication message is configured to indicate that, the link on which the pending traffic is mapped comprises the second link.

6 . A access point multi-link device (AP MLD) comprising a processor and a memory, wherein
the memory is configured to store a computer program; and the processor is configured to call and run the computer program stored in the memory, and perform a wireless communication method, the method comprises:
a first access point (AP) affiliated with the AP MLD transmitting a first message over a first link to a first station (STA) affiliated with a non-access point multi-link device (Non-AP MLD), wherein the first message is configured to indicate whether a second AP affiliated with the AP MLD is in a wake state or an active state; and/or
the first AP affiliated with the AP MLD receiving, over the first link, a second message sent from the first STA affiliated with the Non-AP MLD, wherein the second message is configured to request the second AP affiliated with the AP MLD to be in the wake state or the active state, or the second message is configured to indicate whether a second STA affiliated with the Non-AP MLD is in the wake state or the active state;
wherein the first AP and the first STA are over the first link, the first link is a primary link, the second AP and the second STA are over a second link, and the second link is a secondary link.

7 . The AP MLD as claimed in claim 6 , wherein
the AP MLD is configured to control the second AP to be in the wake state or the active state at a first time point, wherein a location of the first time point is before a time point when the first AP transmits the first message or after a time point when the second message is received.

8 . The AP MLD as claimed in claim 7 , wherein
in response to the location of the first time point being before the time point when the first AP transmits the first message, and in response to the second AP being in the wake state or the active state, the method further comprises:
the AP MLD determining that the second AP has not received the second message within a first time duration, and controlling the second AP to enter a sleeping state; and/or
the AP MLD determining that a link used to transmit a pending traffic does not include the second link, and controlling the second AP to enter a sleeping state.

9 . The AP MLD as claimed in claim 6 , wherein
the first message comprises a first frame, wherein the first frame is sent in response to a pending traffic to be transmitted to the Non-AP MLD being buffered in the AP MLD, and the first frame is configured to indicate that, a link on which the pending traffic is mapped includes the second link.

10 . The AP MLD as claimed in claim 6 , wherein
the second message comprises:
a second frame received by the first AP from the first STA, wherein the second frame is configured to indicate that, the link used to transmit the pending traffic comprises the second link, the first STA transmits, in response to receiving a first frame sent from the first AP, the second frame to the first AP; and/or
a third frame received by the first AP from the first STA, wherein the first STA transmits the third frame in response to a pending traffic to be transmitted to the AP MLD being buffered in the Non-AP MLD, the third frame is configured to indicate that, a link used to transmit the pending traffic comprises the second link.

11 . The AP MLD as claimed in claim 9 , wherein
the first frame carries a first indication message and/or a second indication message; and the first indication message is configured to indicate that, the pending traffic is a downlink traffic to be transmitted to the Non-AP MLD, and the second indication message is configured to indicate that, the link on which the pending traffic is mapped comprises the second link.

12 . The AP MLD as claimed in claim 11 , wherein
the first indication message is a first identifier; and the first identifier taking a first value is configured to indicate that, the pending traffic is the downlink traffic to be transmitted to the Non-AP MLD; and/or the second indication message is a second identifier; and the second identifier taking a second value is configured to indicate that, the link on which the pending traffic is mapped comprises the second link.

13 . The AP MLD as claimed in claim 12 , wherein
the first identifier is a bit of a partial virtual bitmap of the first frame corresponding to the Non-AP MLD,
in response to an addressing mode of the pending traffic is group addressing, the second identifier is a bit of a delivery traffic indication map (DTIM) element, and/or
in response to the addressing mode of the pending traffic is individual addressing, the second identifier is a bit of a multi-link traffic element corresponding to the second link.

14 . The AP MLD as claimed in claim 10 , wherein
in response to the second message comprising the third frame, the method further comprises:
the first AP affiliated with the AP MLD tr

Assignees

• Guangdong Oppo Mobile Telecommunications Corp Ltd

Inventors

• Du Yongyang
• Huang Lei
• Lu Liuming
• Luo Chaoming
• Hou Ronghui

Classifications

• H04W52/0216

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title

• H04W76/15

  Setup of multiple wireless link connections · CPC title

• H04W60/04

  using triggered events · CPC title

• H04W52/0235 Primary

  where the received signal is a power saving command · CPC title

• H04W52/02

  Power saving arrangements · CPC title