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:
Sep. 10, 2024
Filed:
Feb. 12, 2020
Apple Inc., Cupertino, CA (US);
Haitong Sun, Irvine, CA (US);
Weidong Yang, San Diego, CA (US);
Yushu Zhang, Beijing, CN;
Wei Zeng, San Diego, CA (US);
Dawei Zhang, Saratoga, CA (US);
Yuchul Kim, Santa Clara, CA (US);
Hong He, Cupertino, CA (US);
Chunhai Yao, Beijing, CN;
Chunxuan Ye, San Diego, CA (US);
Oghenekome Oteri, San Diego, CA (US);
Ghaith N Hattab, Santa Clara, CA (US);
Ismael Gutierrez Gonzalez, San Jose, CA (US);
Jie Cui, San Jose, CA (US);
Yang Tang, Cupertino, CA (US);
Yeong-Sun Hwang, Germering, DE;
Apple Inc., Cupertino, CA (US);
Abstract
A base station and wireless communication (UE) may perform type II CSI-RS port selection based at least on partial reciprocity between an uplink path and a downlink path between the base station and the UE. The base station may identify dominant signal paths between the base station and the UE, based on measurements performed during uplink transmissions, and may transmit, to the UE, corresponding information indicative of CSI measurement and reporting configuration that may include a single measurement resource or multiple measurement resources. Each measurement resource may include multiple-port CSI-RS ports. The UE may indicate, to the base station, selection of a measurement resource when multiple measurement resources are configured, and may also report layer independent or layer common selection of a subset of CSI-RS ports included in the indicated single measurement resource or multiple measurement resources. Further enhancements include frequency domain compression enhancement and dynamic codebook parameter reconfiguration.