Technique for controlling plurality of wireless communication links
One embodiment according to the present specification relates to a method for transmitting, from a first link, information for setting a NAV in a second link. When transmission STA performs communication through a second link, the transmission STA can transmit, through a first link, information for setting the NAV for the second link in another STA. Particularly, the transmission STA can receive, from the second reception STA, a second frame through the second link. The transmission STA can transmit, to a first reception STA, a first frame through the first link during the reception of the second frame. The first frame can include information for setting the NAV for the second link. The first reception STA can set the NAV for the second link on the basis of the first frame.
1. A method performed in a wireless local area network (WLAN) system, the method comprising:
receiving, by a transmitting station (STA) supporting multiple links including a first link and a second link, a second frame from a second receiving STA through the second link; and
transmitting, by the transmitting STA, a first frame including information for setting a network allocation vector (NAV) for the second link to a first receiving STA through the first link, while receiving the second frame.
2. The method of claim 1 ,
wherein the information for setting the NAV for the second link includes first information field related to a duration value for setting the NAV for the second link.
3. The method of claim 1 ,
wherein the information for setting the NAV for the second link includes a second information field related to a difference between an end point of the first frame and an end point of the second frame, and
wherein the information for setting the NAV for the second link further includes a third information field related to a transmission length of the first frame.
4. The method of claim 1 ,
wherein the information for setting the NAV for the second link is included in a header of a physical layer of the first frame.
5. The method of claim 1 ,
wherein the information for setting the NAV for the second link is included in a header of a medium access control (MAC) layer of the first frame.
6. The method of claim 5 ,
wherein the first frame includes a control frame format.
7. The method of claim 1 ,
wherein each of the first link and the second link belongs to any one of 2.4 GHz, 5 GHz, and 6 GHz bands, and the first link and the second link belong to different bands.
8. A transmitting station (STA) supporting multiple links including a first link and a second link, the transmitting station comprising:
a transceiver configured to transmit or receive a wireless signal; and
a processor connected to the transceiver, wherein the processor is configured to
receive a second frame from a second receiving STA through the second link and to transmit a first frame including information for setting a network allocation vector (NAV) for the second link to a first receiving STA through the first link, while receiving the second frame.
9. The transmitting station of claim 8 ,
wherein the information for setting the NAV for the second link includes first information field related to a duration value for setting the NAV for the second link.
10. The transmitting station of claim 8 ,
wherein the information for setting the NAV for the second link includes a second information field related to a difference between an end point of the first frame and an end point of the second frame, and
wherein the information for setting the NAV for the second link further includes a third information field related to a transmission length of the first frame.
11. The transmitting station of claim 8 ,
wherein the information for setting the NAV for the second link is included in a header of a physical layer of the first frame.
12. The transmitting station of claim 8 ,
wherein the information for setting the NAV for the second link is included in a header of a medium access control (MAC) layer of the first frame.
13. The transmitting station of claim 12 ,
wherein the first frame includes a control frame format.
14. The transmitting station of claim 8 ,
wherein each of the first link and the second link belongs to any one of 2.4 GHz, 5 GHz, and 6 GHz bands, and the first link and the second link belong to different bands.