Method and device for transmitting or receiving information about links in wireless LAN system

Patent metadata

Field	Value
Publication number	US-11503539-B2
Application number	US-201917269989-A
Country	US
Kind code	B2
Filing date	Aug 23, 2019
Priority date	Aug 23, 2018
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

The method executed in a wireless local area network (WLAN) system, according to various embodiments, may comprise: a step in which a reception station (STA), which supports a multilink comprising a first link and a second link, receives a target wake time (TWT) element via the first link, wherein the TWT element is received via a beacon and includes information for TWT period configuration for the second link; a step in which the reception STA configures a TWT period for the second link on the basis of the TWT element; and a step in which the reception STA communicates with a transmission STA via the second link within the TWT period.

First claim

What is claimed is:

1. A method performed in a wireless local area network (WLAN) system, the method comprising:
transmitting, by a multi-link device supporting a multi-link operation related to a first link and a second link, an association request frame including identification (ID) information related to a plurality of links mapped to the multi-link operation;
receiving, by the multi-link device, a target wake time (TWT) element through the first link,
wherein the TWT element includes a request type field related to whether the TWT element is transmitted by a TWT requesting station (STA) or a TWT responding STA, a TWT value field for configuring a TWT period, and a link ID information field indicating at least one link to which the TWT element applies;
applying, by the multi-link device, the TWT element to the second link, based on the link ID information field; and
performing, by the multi-link device, communication through the second link within the TWT period.

2. The method of claim 1 , wherein the multi-link device is a non-access point (AP) device.

3. The method of claim 1 , wherein the TWT element further includes a minimum TWT wake duration field for configuring a minimum duration of the TWT period.

4. The method of claim 1 , wherein the first link is configured based on one of a 2.4 GHz band, a 5 GHz band, and/or a 6 GHz band.

5. The method of claim 1 , wherein the second link is configured based on one of a 2.4 GHz band, a 5 GHz band, and/or a 6 GHz band.

6. A multi-link device in a wireless local area network (WLAN) system, the multi-link device comprising:
a transceiver supporting a multi-link operation related to a first link and a second link by transmitting/receiving a radio signal; and
a processor controlling the transceiver,
wherein the processor is configured to:
transmit an association request frame including identification (ID) information related to a plurality of links mapped to the multi-link operation;
receive a target wake time (TWT) element through the first link,
wherein the TWT element includes a request type field related to whether the TWT element is transmitted by a TWT requesting station (STA) or a TWT responding STA, a TWT value field for configuring a TWT period, and a link ID information field indicating at least one link to which the TWT element applies;
apply the TWT element to the second link, based on the link ID information field; and
perform communication through the second link within the TWT period.

7. The multi-link device of claim 6 , wherein the multi-link device is a non-access point (AP) device.

8. The multi-link device of claim 6 , wherein the first link is configured based on one of a 2.4 GHz band, a 5 GHz band, and/or a 6 GHz band.

9. The multi-link device of claim 6 , wherein the second link is configured based on one of a 2.4 GHz band, a 5 GHz band, and/or a 6 GHz band.

Assignees

• Lg Electronics Inc

Inventors

• Kim Suhwook
• Kim Jeongki
• Ryu Kiseon
• Choi Jinsoo

Classifications

• H04W52/0216 Primary

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

• Y02D30/70

  in wireless communication networks · CPC title

• H04W52/0203 Primary

  in the radio access network or backbone network of wireless communication networks · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W52/0229

  where the received signal is a wanted signal · CPC title