US 12,120,763 B2
Mapping of TID and link in multi-link
Insun Jang, Seoul (KR); Jeongki Kim, Seoul (KR); Jinsoo Choi, Seoul (KR); Suhwook Kim, Seoul (KR); Sungjin Park, Seoul (KR); and Taewon Song, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jun. 16, 2023, as Appl. No. 18/210,913.
Application 18/210,913 is a continuation of application No. 17/597,170, previously published as PCT/KR2020/008060, filed on Jun. 22, 2020.
Claims priority of application No. 10-2019-0079662 (KR), filed on Jul. 2, 2019; and application No. 10-2019-0113153 (KR), filed on Sep. 11, 2019.
Prior Publication US 2023/0337306 A1, Oct. 19, 2023
Int. Cl. H04W 76/15 (2018.01); H04L 1/1607 (2023.01); H04W 72/1263 (2023.01); H04W 84/12 (2009.01)
CPC H04W 76/15 (2018.02) [H04L 1/1621 (2013.01); H04W 72/1263 (2013.01); H04W 84/12 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method in a wireless local area network (WLAN) system, the method comprising:
transmitting, by a first multilink device (MLD) to a second MLD, a management frame comprising a multi-link element and a Traffic Identifier (TID)-to-link mapping element,
wherein the multi-link element includes a control field related to whether TID-to-link mapping is supported and a value of the control field is set based on whether the TID-to-link mapping is supported, and
wherein the TID-to-link mapping element includes a first link mapping information field indicating at least one link on which a frame belonging to a first TID is allowed to be transmitted, and a value of the first TID is one of zero (0) to seven (7);
transmitting, by the first MLD to the second MLD, an Add Block Acknowledgment (ADDBA) request frame indicating the first TID for which a block acknowledgment (BA) agreement is being set up; and
in response to the ADDBA request frame, receiving, by the first MLD from the second MLD, an ADDBA response frame,
wherein an BA agreement for the first TID is established between the first MLD and the second MLD based on the ADDBA request frame and the ADDBA response frame, and
wherein based on the BA agreement for the first TID, a data frame for the first TID is exchanged between the first MLD and the second MLD on any link to which the first TID is mapped.