公开(公告)号：US11871259B2

公开(公告)日：2024-01-09

申请号：US17275128

申请日：2019-09-26

Applicant: QUALCOMM Incorporated

Inventor： Bo Chen ,  Pavan Kumar Vitthaladevuni ,  Yu Zhang ,  Ruifeng Ma ,  Joseph Binamira Soriaga ,  Yeliz Tokgoz ,  Tingfang Ji ,  Alexandros Manolakos

IPC: H04W24/10 ,  H04L5/00 ,  H04L25/02

CPC classification number: H04W24/10 ,  H04L5/0057 ,  H04L25/0224

Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for sounding reference signal (SRS) guided downlink channel state information-reference signal (CSI-RS) scan. One example method for wireless communication generally includes determining whether to perform channel measurement and reporting operations for a user-equipment (UE) using a reciprocity-based scheme or a channel state information-reference signal (CSI-RS) based scheme based on a criteria of a cell, and performing the channel measurement and reporting operations based on the determination.

公开(公告)号：US11799525B2

公开(公告)日：2023-10-24

申请号：US17250896

申请日：2019-09-26

Applicant: QUALCOMM Incorporated

Inventor： Bo Chen ,  Pavan Kumar Vitthaladevuni ,  Yu Zhang ,  Ruifeng Ma ,  Joseph Binamira Soriaga ,  Tingfang Ji

IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/0408

CPC classification number: H04B7/0478 ,  H04B7/0408

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine channel state information for a communication link, wherein the channel state information is based at least in part on a linear combination associated with a plurality of beams of the communication link, wherein a first set of beams used for a first subband, of a plurality of subbands of the communication link, is different than a second set of beams used for a second subband of the plurality of subbands, and wherein the plurality of beams includes the first set of beams and the second set of beams; and transmit the channel state information. Numerous other aspects are provided.

公开(公告)号：US12040867B2

公开(公告)日：2024-07-16

申请号：US17310350

申请日：2020-02-11

Applicant: QUALCOMM Incorporated

Inventor： Ruifeng Ma ,  Yuwei Ren ,  Bo Chen ,  Yu Zhang ,  Liangming Wu ,  Chenxi Hao ,  Renqiu Wang ,  Hao Xu ,  Tingfang Ji

IPC: H04B7/06 ,  H04W72/23

CPC classification number: H04B7/0626 ,  H04W72/23

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may determine that a user equipment (UE) is to use a differential reporting mode based at least in part on a channel state information (CSI) report from the UE. The base station may transmit to the UE, signaling to cause the UE to use the differential reporting mode based at least in part on determining that the UE is to use the differential reporting mode. Numerous other aspects are provided.

公开(公告)号：US12028284B2

公开(公告)日：2024-07-02

申请号：US17595542

申请日：2020-05-28

Applicant: QUALCOMM Incorporated

Inventor： Bo Chen ,  Chenxi Hao ,  Yu Zhang ,  Ruifeng Ma ,  Pavan Kumar Vitthaladevuni ,  Sony Akkarakaran ,  Joseph Binamira Soriaga ,  Krishna Kiran Mukkavilli ,  Tingfang Ji ,  Hao Xu

IPC: H04L5/00 ,  H04L25/02

CPC classification number: H04L5/0048 ,  H04L5/0087 ,  H04L5/0091 ,  H04L25/0228 ,  H04L25/0248

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a sounding reference signal (SRS) configuration that indicates a maximum number of SRS ports and whether the UE is permitted to determine an actual number of SRS ports to be used for SRS transmission that is different from the maximum number of SRS ports. The UE may determine the actual number of SRS ports to be used for SRS transmission based at least in part on the SRS configuration. The UE may transmit one or more SRSs using the actual number of SRS ports. Numerous other aspects are provided.

公开(公告)号：US11595097B2

公开(公告)日：2023-02-28

申请号：US17429488

申请日：2020-02-15

Applicant: Qualcomm Incorporated

Inventor： Bo Chen ,  Yuwei Ren ,  Liangming Wu ,  Yu Zhang ,  Ruifeng Ma ,  Chenxi Hao ,  Renqiu Wang ,  Hao Xu

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/0456 ,  H04L25/02

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may perform channel state information (CSI) measurements on one or more reference signal transmissions received from a base station. Based on the CSI measurements, the UE may generate a CSI report, and the UE may transmit the CSI report to the base station. In some cases, the generated CSI report may include a first portion and a second portion. The first portion may indicate whether the second portion of the CSI report includes full-band CSI feedback or partial-band CSI feedback. The second portion may provide the CSI feedback for one or more identified sub-bands. In some cases, the second portion may include a sub-band index indicating the identified sub-bands. Additionally or alternatively, the second portion may include a bitmap indicating a correspondence between multiple CSI feedback values and multiple corresponding sub-band indexes.