Invention Grant
- Patent Title: Beam search for precoder for channel state feedback
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Application No.: US16749575Application Date: 2020-01-22
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Publication No.: US11265070B2Publication Date: 2022-03-01
- Inventor: Parisa Cheraghi , Veljko Boljanovic , Anas Tom , Alexei Yurievitch Gorokhov
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Holland & Hart LLP
- Main IPC: H04B7/06
- IPC: H04B7/06 ; H04B7/08 ; H04B7/0456 ; H04L27/26 ; H04B17/318 ; H04L5/00

Abstract:
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may perform a digital simulation to determine a precoding matrix indicator (PMI) associated with a digital reception beam. A base station may send, to the UE, a reference signal. The UE may perform a coarse beam search on the reference signal using non-oversampled digital reception beams. The UE may measure the signal strength of the reference signal for each of the non-oversampled digital reception beams and select the non-oversampled digital reception beam with the strongest signal. The UE may perform a refined beam search procedure on the selected beam by using a set of oversampled digital reception beams which correspond to the selected non-oversampled digital reception beam. The UE may determine the PMI associated with the strongest oversampled digital reception beam and send the PMI in a report to the base station.
Public/Granted literature
- US20210226686A1 BEAM SEARCH FOR PRECODER FOR CHANNEL STATE FEEDBACK Public/Granted day:2021-07-22
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