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：US11387881B2

公开(公告)日：2022-07-12

申请号：US16824982

申请日：2020-03-20

Applicant: QUALCOMM Incorporated

Inventor： Parisa Cheraghi ,  Anas Tom ,  Alexei Yurievitch Gorokhov

IPC: H03D3/22 ,  H04B7/06 ,  H04B7/0456 ,  H04B7/0417 ,  H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a channel state information reference signal that includes a plurality of resource blocks. The UE may sub-sample one or more portions of the plurality of resource blocks prior to performing one or more channel state feedback computations. Accordingly, the UE may perform the one or more channel state feedback computations based at least in part on the one or more sub-sampled portions of the plurality of resource blocks and transmit, to the base station, a channel state feedback report based at least in part on the one or more channel state feedback computations that are performed using the one or more sub-sampled portions of the plurality of resource blocks. Numerous other aspects are provided.

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.