MUMBAI, India, July 24 -- Intellectual Property India has published a patent application (202418074769 A) filed by Interdigital Patent Holdings, Inc. on October 03, 2024, for Backward Compatible Physical Layer Convergence Procedure (plcp) Protocol Data Unit (ppdu) Design In Wireless Local Area Network (wlan) System.
Inventors include Lou, Hanqing; Sun, Li-Hsiang; Yang, Rui; Levy, Joseph S. Number; and Wang, Xiaofei.
The application for the patent was published on July 17, 2026, under issue no. 29/2026.
Abstract: Methods and apparatuses are described herein for feedback based midamble adaptation. For example, a first station (STA) may transmit, to a second STA, a request frame that includes an indicator indicating a request for midamble information. The first STA may receive, from the second STA, a response frame that includes the midamble information determined by the second STA based on one or more channel measurements associated with the second STA. The midamble information may include a midamble report, a Doppler measurement report, or the like. The midamble report or the Doppler measurement report may include at least one of a midamble periodicity, a mobility/Doppler level, or the like. Based on the midamble information, the first STA may generate a physical layer convergence procedure (PLCP) protocol data unit (PPDU) that includes at least one midamble within a data portion of the PPDU.
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