US 12,439,454 B2
Channel access on non-simultaneous transmit/receive link
Liangxiao Xin, San Jose, CA (US); Mohamed Abouelseoud, Burlingame, CA (US); Li-Hsiang Sun, San Jose, CA (US); and Qing Xia, Burlingame, CA (US)
Assigned to SONY GROUP CORPORATION, Tokyo (JP); and SONY CORPORATION OF AMERICA, New York, NY (US)
Filed by SONY GROUP CORPORATION, Tokyo (JP); and SONY CORPORATION OF AMERICA, New York, NY (US)
Filed on Jun. 23, 2022, as Appl. No. 17/847,342.
Claims priority of provisional application 63/223,634, filed on Jul. 20, 2021.
Prior Publication US 2023/0029957 A1, Feb. 2, 2023
Int. Cl. H04W 74/0816 (2024.01); H04W 72/0446 (2023.01); H04W 74/08 (2009.01); H04W 74/0833 (2024.01)
CPC H04W 74/0816 (2013.01) [H04W 72/0446 (2013.01); H04W 74/085 (2013.01); H04W 74/0866 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication in a network, the apparatus comprising:
(a) a wireless multiple-link device (MLD) having multiple stations (STAs) affiliated with the MLD for performing multi-link operations over multiple links using carrier sense multiple access/collision avoidance (CSMA/CA) for communicating with other wireless stations (STAs) of a network;
(b) a processor of said MLD for performing a communication protocol over at least a first link and a second link;
(c) a non-transitory memory storing instructions executable by the processor for communicating with other STAs on the network; and
(d) wherein said instructions, when executed by the processor, performs steps comprising:
(i) wherein said MLD is affiliated with another MLD on the network, and said MLD can determine the transmitting and receiving status of STA1 on a first link (Link1) of that other MLD because STA3 of said MLD is transmitting or receiving with STA1 on Link1 of that other MLD;
(ii) wherein said MLD is configured for simultaneous transmit and receive (STR) and the other MLD is configured for non-simultaneous transmit receive (NSTR) communications;
(iii) wherein said MLD contends and obtains channel access over a second link (Link2) to the other MLD, wherein the other MLD is a transmit opportunity (TXOP) holder of Link1; and
(iv) wherein said MLD immediately transmits over Link2 to the other MLD if that other MLD is receiving on Link1; or wherein said MLD transmits a frame over Link2 to occupy the channel if the other MLD is transmitting on Link1; wherein afterward when the other MLD is receiving on Link1, then said MLD performs transmitting another frame to the other MLD.