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. 08, 2025
Filed:
Dec. 15, 2020
Apple Inc., Cupertino, CA (US);
Jie Cui, Cupertino, CA (US);
Yang Tang, Cupertino, CA (US);
Dawei Zhang, Cupertino, CA (US);
Hong He, Cupertino, CA (US);
Chunhai Yao, Beijing, CN;
Chunxuan Ye, San Diego, CA (US);
Haitong Sun, Cupertino, CA (US);
Weidong Yang, San Diego, CA (US);
Wei Zeng, Cupertino, CA (US);
Yuchul Kim, Cupertino, CA (US);
Yushu Zhang, Beijing, CN;
Zhibin Wu, Cupertino, CA (US);
Oghenekome Oteri, San Diego, CA (US);
APPLE INC., Cupertino, CA (US);
Abstract
Methods and apparatus are provided for a UE to determine a UL spatial relation for an UL transmission in response to an unknown UL spatial relation switch. The UE may determine whether the UL spatial relation is based on an SRS transmission in UL, a CSI-RS in DL, or an SSB in the DL. If the UL spatial relation is based on the SRS transmission, the UE may select the UL spatial relation for the UL transmission corresponding to a Tx beam of the SRS transmission. If the UL spatial relation is based on the CSI-RS or the SSB, the UE may select the UL spatial relation for the UL transmission based on whether the unknown UL spatial relation switch is due to a corresponding resource for beam training not being configured by a communication network or a corresponding beam information being expired.