Granted Patent B2

US 12,659,992 · App. 17/916,406 · Granted Jun 16, 2026

Inventors: Sung Hyun Hwang (Daejeon, KR); Kyu Min Kang (Daejeon, KR); Jae Cheol Park (Daejeon, KR); Jin Hyung Oh (Sejong, KR); Dong Woo Lim (Daejeon, KR); Su Na Choi (Daejeon, KR); Yong Ho Kim (Incheon, KR); Han Seul Hong (Seoul, KR)

Assignees: Electronics and Telecommunications Research Institute; Korea National University of Transportation Industry-Academic Cooperation Foundation

H04W74/0816H04W84/12

Abstract

Claims (21)

1 . An operation method of a first device using multi-links in a wireless LAN, the operation method comprising:

transmitting a first request-to-send (RTS) frame to a second device in a first link among the multi-links;

receiving a first clear-to-send (CTS) frame from the second device in the first link, the first CTS frame being a response to the first RTS frame;

in response to reception of the first CTS frame, transmitting a first data frame to the second device in the first link; and

transmitting, without an RTS-CTS operation, a second data frame to the second device in a second link among the multi-links while the second device is in a receiving state after completing a channel access operation in the second link among the multi-links,

wherein a length of one data frame of the first data frame and the second data frame is adjusted such that an end time of the first data frame and an end time of the second data frame are identical.

2 . The operation method according to claim 1 , wherein the second device does not support simultaneous transmit and receive (STR) operations.

3 . The operation method according to claim 1 , wherein padding is added to the one data frame or a length of the one data frame is shortened such that the end time of the first data frame and the end time of the second data frame are identical.

4 . The operation method according to claim 1 , further comprising transmitting a CTS-to-self frame to the second device in the second link before the transmission of the second data frame,

wherein a transmission time of the CTS-to-self frame is after the second device is in the receiving state after transmitting the first CTS frame.

5 . The operation method according to claim 1 , wherein the channel access operation includes a backoff operation.

6 . An operation method of a first device using multi-links in a wireless LAN, the operation method comprising:

performing a first channel access operation in a first link among the multi-links;

performing a second channel access operation in a second link among the multi-links;

when the second channel access operation is completed before completion of the first channel access operation and a second device supports a non-simultaneous transmit and receive (NSTR) operation, waiting for transmission of a first request-to-send (RTS) frame to the second device in the second link;

when the first channel access operation is completed, transmitting the first RTS frame in the second link and a second RTS frame in the first link to the second device at the same time;

receiving a first clear-to-send (CTS) frame and a second CTS frame from the second device in the second link and the first link, the first CTS frame being a response to the first RTS frame and the second CTS frame being a response to the second RTS frame; and

when the first CTS frame and the second CTS frame are received, transmitting data frames to the second device in the first link and the second link at a same time,

wherein a length of one data frame of the data frames is adjusted such that end times of the data frames are identical.

7 . The operation method according to claim 6 , wherein padding is added to the one data frame or a length of the one data frame is shortened such that the end times of the data frames are identical.

8 . The operation method according to claim 6 , wherein each of the first channel access operation and the second channel access operation includes a backoff operation.

Assignments (1)

Priority Claims (2)

Continuity (1)

References Cited (31)