Invention Grant
- Patent Title: Receiving beam selection using hybrid channel based beamforming and codebook based beamforming
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Application No.: US18474375Application Date: 2023-09-26
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Publication No.: US12224843B2Publication Date: 2025-02-11
- Inventor: Franz J. Eder , Adrian Carlos Loch Navarro , Andre Janssen , Holger Neuhaus , Kenan Kocagoez
- Applicant: APPLE INC.
- Applicant Address: US CA Cupertino
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: US CA Cupertino
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: H04B7/10
- IPC: H04B7/10 ; H04B7/06 ; H04B7/08

Abstract:
Some aspects relate to apparatuses and methods for selecting a receiving beam based on hybrid channel based beamforming and codebook based beamforming. A user equipment (UE) can determine, based on a first measurement related to signal to noise ratio (SNR) and predetermined threshold values, whether the UE is in a low SNR state. If the UE is in a low SRN state, the UE can derive an estimated channel covariance matrix RCH for channels at a set of antenna elements of the UE based on channel based bearmforming (CHBF). Afterwards, a set of test bears {0, . . . Ntest−1} is selected based on the channel covariance matrix RCH, and a set of codebook measurement beams is further selected based on the set of test beams. A receiving beam is selected based on a set of measurements performed on the set of codebook measurement beams at the measurement opportunity for codebook based beamforming (CBBF).
Public/Granted literature
- US20240030997A1 RECEIVING BEAM SELECTION USING HYBRID CHANNEL BASED BEAMFORMING AND CODEBOOK BASED BEAMFORMING Public/Granted day:2024-01-25
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