The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2025
Filed:
Jul. 22, 2022
Wireless local area network full-duplex enhancements for scenarios with multiple access-points / bss
Sony Group Corporation, Tokyo, JP;
Sony Corporation of America, New York, NY (US);
Li-Hsiang Sun, San Jose, CA (US);
Mohamed Abouelseoud, Burlingame, CA (US);
Liangxiao Xin, San Jose, CA (US);
Qing Xia, San Jose, CA (US);
SONY GROUP CORPORATION, Tokyo, JP;
SONY CORPORATION OF AMERICA, New York, NY (US);
Abstract
Full-duplex (FD) enhancements for three scenarios with multiple APs/BSSs. (1) Multiple-AP joint transmissions on a WLAN. Toward eliminating self-interferences and other issues, certain pilot signals in the PPDU are transmitted only by the primary AP. One or more secondary APs participating in the joint transmission receive the pilots to correct their clock in the following symbols. (2) Communications are performed with extended OFDM symbols sent on a second channel which facilitate NAV decoding for stations transmitting on a first channel. (3) More than one AP can perform a joint Ack/BA to a UL PPDU. The secondary AP may utilize its full duplex capability to determine the difference of receiving status between itself and the primary AP, and forward data to the primary which it had not received.