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:
Jan. 09, 2024
Filed:
Aug. 10, 2018
Apple Inc., Cupertino, CA (US);
Wei Zeng, San Diego, CA (US);
Dawei Zhang, Saratoga, CA (US);
Haitong Sun, Irvine, CA (US);
Wei Zhang, Santa Clara, CA (US);
Tianyan Pu, Cupertino, CA (US);
Yuchul Kim, Santa Clara, CA (US);
Yuqin Chen, Shenzhen, CN;
Farouk Belghoul, Campbell, CA (US);
Haijing Hu, Beijing, CN;
Fangli Xu, Beijing, CN;
Sami M. Almalfouh, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
This disclosure relates to using a wake up signal in conjunction with cellular communication in unlicensed spectrum. A cellular base station may provide a wake up signal on an unlicensed frequency channel after successful completion of a listen-before-talk procedure. The wake up signal may include a preamble configured for coherent detection, and information indicating channel occupancy time for a cellular communication by the cellular base station and a cell identifier for the cellular base station. A wireless device may monitor the unlicensed frequency channel for a wake up signal, and may determine whether to monitor the unlicensed frequency channel for control channel signaling based on whether a wake up signal is received, and potentially also based on the contents of the wake up signal if a wake up signal is received.