Patent ID: 11943809
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A first station (STA) supporting first and second links, the first STA comprising:
a transceiver for transmitting/receiving RF signals; and
a processor connected to the transceiver,
wherein the processor is configured to:
transmit an Association Request frame to an access point (AP), wherein the Association Request frame includes first capability information of the STA, wherein the first capability information includes a first field related to whether the STA supports a multi-link operation, a second field related to a first link identifier (ID) of the multi-link operation supported by the STA, and a third field related to whether the STA supports a communication in a 6 GHz band, wherein the STA supports a first link and a second link for the multi-link operation;
in response to the Association Request frame, receive an Association Response frame from the AP, wherein the Association Response frame includes second capability information of the AP, wherein the second capability information includes a forth field related to whether the AP supports the multi-link operation, a fifth field related to a second link identifier (ID) of the multi-link operation supported by the AP, and a sixth field related to whether the AP supports a communication in the 6 GHz band;
receive a physical protocol data unit (PPDU) through the first link from the AP,
wherein the PPDU includes a physical (PHY) preamble including a first control signal field and a second control signal field being contiguous to the first control signal field,
wherein the first control signal field includes first bits related to a transmission opportunity (TXOP) of the PPDU, second bits related to a basic service set (BSS) color ID field of the PPDU, and
wherein the second control signal field includes third bits related to an intended receiver address of the PPDU;
set a first intra-BSS network allocation vector (NAV) for the first link based on the second bits indicating a BSS color ID of the first STA and the third bits not indicating the STA; and
set a second intra-BSS NAV for the second link based on the second bits indicating a BSS color ID of the first STA and the third bits not indicating the STA,
wherein a duration of the first intra-BSS NAV and a duration of the second intra-BSS NAV are set based on the first bits, and the duration of the first intra-BSS NAV is set to be same as the duration of the second intra-BSS NAV.