公开(公告)号：US11546029B2

公开(公告)日：2023-01-03

申请号：US17310312

申请日：2020-01-28

Applicant: Qualcomm Incorporated

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

IPC: H04B7/0456 ,  H04B7/06 ,  H04L1/00 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. Techniques described herein provide for a user equipment (UE) receiving a set of downlink reference signals associated with a downlink channel. In some cases, the set of downlink reference signals may include a channel state information reference signals (CSI-RS). The UE may calculate a transmission rank and a channel quality based on the received set of downlink reference signals. In some cases, the indication of the transmission rank may include a rank indication (RI), and the indication of the channel quality includes a channel quality indicator (CQI). The UE may then transmit the indications of the transmission rank and the channel quality using an uplink control channel, and may transmit an indication of a remaining channel state feedback using a precoded uplink reference signal.

公开(公告)号：US12212522B2

公开(公告)日：2025-01-28

申请号：US17768664

申请日：2019-10-31

Applicant: Qualcomm Incorporated

Inventor： Alexandros Manolakos ,  Yi Huang ,  Wanshi Chen ,  Pavan Kumar Vitthaladevuni ,  Krishna Kiran Mukkavilli ,  Bo Chen ,  Ruifeng Ma ,  Weimin Duan ,  Muhammad Sayed Khairy Abdelghaffar

IPC: H04L5/00 ,  H04W72/0453

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a configuration identifying a first set of frequency resources for transmitting a sounding reference signal, where the sounding reference signal may be used at least for downlink channel state information acquisition. The UE may receive an indication of an association between the configuration for the sounding reference signal and a second set of frequency resources and determine, based on the association, values for one or more sounding reference signal transmission parameters for the first set of frequency resources. The UE may transmit the sounding reference signal on the first set of frequency resources based on the determined one or more values.

公开(公告)号：US12199902B2

公开(公告)日：2025-01-14

申请号：US17595560

申请日：2020-06-09

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04B7/0456 ,  H04B7/06 ,  H04W72/21

Abstract: A user equipment (UE) receives a first channel state information reference signal (CSI-RS) on a first set of beams and receives a second CSI-RS on a second set of beams. The apparatus determines a channel quality indicator (CQI), a rank indicator (RI), and a precoding matrix indicator (PMI) based on the first CSI-RS. The apparatus reports the CQI and RI using an uplink control channel and indicates the PMI using a precoded SRS transmission. The precoded SRS transmission may be precoded based on a dissimilarity between the first CSI-RS and the second CSI-RS. The first CSI-RS may include a defined precoder, and the second CSI-RS may include a precoder based on an uplink channel estimate of a non-precoded SRS from the UE.

公开(公告)号：US11563472B2

公开(公告)日：2023-01-24

申请号：US17427585

申请日：2020-01-31

Applicant: Qualcomm Incorporated

Inventor： Bo Chen ,  Yuwei Ren ,  Renqiu Wang ,  Ruifeng Ma ,  Pavan Kumar Vitthaladevuni ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  Hao Xu

IPC: H04B7/0456 ,  H04B7/06 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may transmit feedback to a base station indicating phase values for sub-bands in a bandwidth part (BWP). The base station may use the phase feedback to perform precoding on a set of beams. To support a reduced payload overhead for the feedback, the UE may implement differential phase feedback. For example, the UE may divide the BWP into a number of sub-band groups and may generate, for each sub-band group of each beam, a first set of bits indicating an absolute phase value for a first sub-band of the sub-band group. The UE may additionally generate a second set of bits indicating differential phase values for the other sub-bands of each sub-band group. The UE may report the first and second sets of bits for the beams to the base station for precoding.

公开(公告)号：US12267708B2

公开(公告)日：2025-04-01

申请号：US17595221

申请日：2020-05-27

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04L5/00 ,  H04W24/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that indicates a sounding reference signal (SRS) resource set to be used for analog channel state feedback (CSF) and an association between the SRS resource set and a set of downlink channel state information reference signals (CSI-RSs). The UE may measure the set of downlink CSI-RSs associated with the SRS resource set. The UE may transmit one or more SRSs for analog CSF using the SRS resource set and based at least in part on measuring the set of downlink CSI-RSs. Numerous other aspects are provided.

公开(公告)号：US12250080B2

公开(公告)日：2025-03-11

申请号：US17757401

申请日：2020-12-23

Applicant: QUALCOMM Incorporated

Inventor： Ruifeng Ma ,  Yuwei Ren ,  Huilin Xu

IPC: H04L1/1812 ,  H04L1/08 ,  H04W88/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that one or more communications with a base station are to be transmitted or received via a relay UE. The one or more communications may include at least one of hybrid automatic repeat request feedback, a retransmission, or a control communication. The UE may transmit or receive the one or more communications via the relay UE. Numerous other aspects are provided.

公开(公告)号：US11984955B2

公开(公告)日：2024-05-14

申请号：US17801505

申请日：2020-04-17

Applicant: QUALCOMM Incorporated

Inventor： Bo Chen ,  Pavan Kumar Vitthaladevuni ,  Taesang Yoo ,  Naga Bhushan ,  Jay Kumar Sundararajan ,  Ruifeng Ma ,  June Namgoong ,  Krishna Kiran Mukkavilli ,  Hao Xu ,  Tingfang Ji

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/0695

Abstract: A method of wireless communication, by a user equipment (UE), includes receiving multiple neural network training configurations for channel state feedback (CSF). Each configuration corresponds to a different neural network framework. The method also includes training each of a group of neural network decoder/encoder pairs in accordance with the received training configurations. A method of wireless communication, by a base station, includes transmitting multiple neural network training configurations to a user equipment (UE) for channel state feedback (CSF). Each configuration corresponds to a different neural network framework. The method also includes receiving a neural network decoder/encoder pair trained in accordance with the training configurations.

公开(公告)号：US11824688B2

公开(公告)日：2023-11-21

申请号：US17309369

申请日：2018-11-21

Applicant: QUALCOMM Incorporated

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

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

CPC classification number: H04L25/0202 ,  H04L5/0057 ,  H04W24/10

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a signaling communication that includes information specifying whether a channel state information reference signal (CSI-RS) precoding resource block group includes a same quantity of resource blocks (RBs) that is included in a CSI reporting subband configured for the UE. The CSI-RS precoding resource block group may enable the UE to perform a channel estimation based at least in part on a CSI-RS transmitted by a base station. The UE may perform the channel estimation based at least in part on the CSI-RS transmitted by the base station. The channel estimation may be based at least in part on whether the CSI-RS precoding resource block group includes the same quantity of RBs that is included in the CSI reporting subband configured for the UE. 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.