ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,238,774, issued on Feb. 25, was assigned to Canon K.K. (Tokyo).

"Enhanced management of ACs in multi-user EDCA transmission mode in wireless networks" was invented by Stephane Baron (Le Rheu, France), Patrice Nezou (Liffre, France) and Pascal Viger (Janze, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "To avoid blocking node AC queues in the degraded MU EDCA mode due to regular OFDMA transmission of data from another AC queue in resource units provided by an AP, the present invention proposes to use a dedicated HEMUEDCATimer for each AC queue, in order for them to be able to exit the degraded MU EDCA mode independently of the other AC queues. In ...