Method and device for transmitting or receiving information about links in wireless LAN system
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.
1. A method in a wireless local area network (WLAN) system, the method comprising:
transmitting, by a station (STA) multi-link device (MLD) supporting a plurality of links including a first link and a second link, an association request frame including a link identification (ID) information field related to the plurality of links to an access point (AP) MLD;
receiving, by the STA MLD, a target wake time (TWT) element through the first link from the AP MLD, wherein the TWT element includes a request type field, a TWT control field for configuring a nominal minimum TWT wake duration, and a link ID control field indicating at least one link to which the TWT element applies, wherein the request type field includes a TWT request subfield related to whether the TWT element is transmitted by a TWT requesting STA or a TWT responding STA,
wherein the request type field has a length of two octets, and the TWT control field has a length of one octet; and
applying, by the STA MLD, the TWT element to the at least one link indicated by the link ID control field.
2. 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.
3. 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.
4. The method of claim 1 , wherein the STA MLD includes a first STA operating in the first link and a second STA operating in the second link.
5. A method in a wireless local area network (WLAN) system, the method comprising:
receiving, by an access point (AP) multi-link device (MLD) supporting a plurality of links including a first link and a second link, an association request frame including a link identification (ID) information field related to the plurality of links from a station (STA) MLD;
transmitting, by the AP MLD, a target wake time (TWT) element through the first link to the STA MLD, wherein the TWT element includes a request type field, a TWT control field for configuring a nominal minimum TWT wake duration, and a link ID control field indicating at least one link to which the TWT element applies, wherein the request type field includes a TWT request subfield related to whether the TWT element is transmitted by a TWT requesting STA or a TWT responding STA,
wherein the request type field has a length of two octets, and the TWT control field has a length of one octet; and
performing, by the AP MLD, a TWT operation with the STA MLD through the at least one link indicated by the link ID control field.
6. The method of claim 5 , 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.
7. The method of claim 5 , 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.
8. The method of claim 5 , wherein the AP MLD includes a first AP operating in the first link and a second AP operating in the second link.
9. A station (STA) multi-link device (MLD) in a wireless local area network (WLAN) system, the STA MLD comprising:
a transceiver adapted to support plurality of links including a first link and a second link; and
a processor adapted to control the transceiver,
wherein the processor is further adapted to:
transmit an association request frame including a link identification (ID) information field related to the plurality of links to an access point (AP) MLD;
receive a target wake time (TWT) element through the first link from the AP MLD, wherein the TWT element includes a request type field, a TWT control field for configuring a nominal minimum TWT wake duration, and a link ID control field indicating at least one link to which the TWT element applies, wherein the request type field includes a TWT request subfield related to whether the TWT element is transmitted by a TWT requesting STA or a TWT responding STA,
wherein the request type field has a length of two octets, and the TWT control field has a length of one octet; and
apply the TWT element to the at least one link indicated by the link ID control field.
10. The STA MLD of claim 9 , 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.
11. The STA MLD of claim 9 , 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.
12. The STA MLD of claim 9 , wherein the STA MLD includes a first STA operating in the first link and a second STA operating in the second link.
13. An access point (AP) multi-link device (MLD) in a wireless local area network (WLAN) system, the AP MLD comprising:
a transceiver adapted to support plurality of links including a first link and a second link; and
a processor adapted to control the transceiver,
wherein the processor is further adapted to:
receive an association request frame including a link identification (ID) information field related to the plurality of links from a station (STA) MLD;
transmit a target wake time (TWT) element through the first link to the STA MLD, wherein the TWT element includes a request type field, a TWT control field for configuring a nominal minimum TWT wake duration, and a link ID control field indicating at least one link to which the TWT element applies, wherein the request type field includes a TWT request subfield related to whether the TWT element is transmitted by a TWT requesting STA or a TWT responding STA,
wherein the request type field has a length of two octets, and the TWT control field has a length of one octet; and
perform a TWT operation with the STA MLD through the at least one link indicated by the link ID control field.
14. The AP MLD of claim 13 , 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.
15. The AP MLD of claim 13 , 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.
16. The AP MLD of claim 13 , wherein the AP MLD includes a first AP operating in the first link and a second AP operating in the second link.