MUMBAI, India, July 24 -- Intellectual Property India has published a patent application (202418085976 A) filed by Interdigital Patent Holdings, Inc. on November 08, 2024, for Enhanced Channel Sounding Reports For Wlan Systems.
Inventors include Lin, Zinan; Lou, Hanqing; Saad, Mahmoud; Wang, Xiaofei Number; and Yang, Rui.
The application for the patent was published on July 17, 2026, under issue no. 29/2026.
Abstract: Methods and apparatuses for channel sounding reports may be used in wireless local area network (WLAN) systems. A station (STA) may receive, from an access point (AP), a beacon frame. The STA may receive, from the AP, a null data packet (NDP) announcement (NDPA) frame including an indication of subchannels for measuring channel characteristics. The STA may receive, from the AP, an NDP frame. The STA may transmit, to the AP, a feedback report frame including channel state information (CSI) feedback, wherein the CSI feedback is based on measurements that the STA performed on the received NDP frame using the indicated subchannels for measuring channel characteristics. The beacon frame may include indications of punctured subchannel(s) and subchannel(s) that is not punctured, which may be indicated as a disabled subchannel bitmap. The subchannels for measuring channel characteristics may be equal to or a subset of the subchannel(s) that is not punctured.
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