Invention Grant
- Patent Title: Systems and methods for robust CSI feedback
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Application No.: US18359103Application Date: 2023-07-26
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Publication No.: US12149306B2Publication Date: 2024-11-19
- Inventor: Yushu Zhang , Chunhai Yao , Chunxuan Ye , Dawei Zhang , Haitong Sun , Seyed Ali Akbar Fakoorian , Sigen Ye , Wei Zeng , Weidong Yang
- Applicant: APPLE INC.
- Applicant Address: US CA Cupertino
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: US CA Cupertino
- Agency: Dorsey & Whitney LLP
- Main IPC: H04L5/12
- IPC: H04L5/12 ; H04B7/0456 ; H04B7/06 ; H04L1/00

Abstract:
Systems and methods disclosed herein use channel state information (CSI) reports from a user equipment (UE) having additional CSI beyond CSI directly derived according to a current MIMO configuration between a base station and the UE. In some embodiments, a channel quality indicator (CQI) according to a selected layer of a plurality of layers used to receive the MIMO transmission as determined relative to the MIMO transmission is reported. In some embodiments, a precoding matrix indicator (PMI) according to a selected layer of a plurality of layers useable to receive rank 1 transmissions is reported along with a CQI determined according to that layer, or according to a layer used to receive the MIMO transmission as determined relative to the MIMO transmission. In some embodiments, a base station configures a UE to report more fulsome CSI according to each of a plurality of ranks.
Public/Granted literature
- US20230370127A1 SYSTEMS AND METHODS FOR ROBUST CSI FEEDBACK Public/Granted day:2023-11-16
Information query