- 专利标题: Receiving beam selection using hybrid channel based beamforming and codebook based beamforming
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申请号: US17899178申请日: 2022-08-30
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公开(公告)号: US11824616B2公开(公告)日: 2023-11-21
- 发明人: Franz J. Eder , Adrian Carlos Loch Navarro , Andre Janssen , Holger Neuhaus , Kenan Kocagoez
- 申请人: Apple Inc.
- 申请人地址: US CA Cupertino
- 专利权人: APPLE INC.
- 当前专利权人: APPLE INC.
- 当前专利权人地址: US CA Cupertino
- 代理机构: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- 主分类号: H04B7/02
- IPC分类号: H04B7/02 ; H04B7/08 ; H04B7/06
摘要:
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 beamforming (CHBF). Afterwards, a set of test beams {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).
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