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:
Apr. 23, 2024
Filed:
Oct. 15, 2020
Apple Inc., Cupertino, CA (US);
Huaning Niu, Cupertino, CA (US);
Chunhai Yao, Beijing, CN;
Chunxuan Ye, San Diego, CA (US);
Dawei Zhang, Cupertino, CA (US);
Haitong Sun, Cupertino, CA (US);
Hong He, Cupertino, CA (US);
Oghenekome Oteri, San Diego, CA (US);
Sigen Ye, Cupertino, CA (US);
Wei Zeng, Cupertino, CA (US);
Weidong Yang, San Diego, CA (US);
Yang Tang, Cupertino, CA (US);
Yushu Zhang, Beijing, CN;
APPLE INC., Cupertino, CA (US);
Abstract
Systems and methods for using clear channel assessment (CCA) on a channel prior to transmitting the channel are disclosed. A wireless transmission system may perform omnidirectional CCA using a CCA power threshold that is calculated based on a number of synchronization signal blocks (SSBs) transmitted by the wireless transmission system per SSB burst or per synchronization signal/physical broadcast channel (SS/PBCH) block measurement timing configuration (SMTC) window, or on a number of transmit (Tx) antennas used. A wireless transmission system may perform directional CCA on one or more Rx beams that correspond to one or more intended Tx beams using CCA power thresholds calculated based on an equivalent isotropic radiated power (EIRP) of the one or more intended Tx beams to determine directional availability of the channel. A wireless transmission system may determine a CCA power threshold based on a scaling between an actual CCA bandwidth and a nominal CCA bandwidth.