公开(公告)号：US20210226686A1

公开(公告)日：2021-07-22

申请号：US16749575

申请日：2020-01-22

Applicant: QUALCOMM Incorporated

Inventor： Parisa Cheraghi ,  Veljko Boljanovic ,  Anas Tom ,  Alexei Yurievitch Gorokhov

IPC: H04B7/08 ,  H04B7/06 ,  H04B7/0456 ,  H04B17/318 ,  H04L5/00 ,  H04L27/26

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.

公开(公告)号：US20210226687A1

公开(公告)日：2021-07-22

申请号：US16749879

申请日：2020-01-22

Applicant: Qualcomm Incorporated

Inventor： Parisa Cheraghi ,  Veljko Boljanovic ,  Alexei Yurievitch Gorokhov

IPC: H04B7/08 ,  H04B7/0495 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0456 ,  H04B17/318

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may perform a digital simulation to determining a precoding matrix indicator (PMI) associated with a digital reception beam. A base station may send, to the UE, a reference signal, and the UE may generate digital sector beams spanning a set of oversampled digital reception beams. The digital sector beams may be generated based on the number of antennas of the UE and a Kaiser Window configuration. The UE may perform a coarse beam search procedure on the reference signal using the set of digital sector beams and select a digital sector beam for a refined beam search used to determine a PMI for reporting to the base station.

公开(公告)号：US11265070B2

公开(公告)日：2022-03-01

申请号：US16749575

申请日：2020-01-22

Applicant: QUALCOMM Incorporated

Inventor： Parisa Cheraghi ,  Veljko Boljanovic ,  Anas Tom ,  Alexei Yurievitch Gorokhov

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.