公开(公告)号：US20220345286A1

公开(公告)日：2022-10-27

申请号：US17640861

申请日：2020-09-09

Applicant: Qualcomm Incorporated

Inventor： Bo CHEN ,  Hao XU ,  Peter GAAL

IPC: H04L5/14 ,  H04W72/12 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A communication device, otherwise known as a user equipment (UE) may receive an indication of an uplink transmission timing pattern configuration for transmitting uplink transmissions on a first carrier. The UE may identify to use both the first carrier and a second carrier during a single uplink transmission mode, where the UE may transition between sending the uplink transmissions on the first and second carriers. The UE may also determine, based on the uplink transmission timing pattern configuration, a timing of uplink carrier switching periods for retuning between transmissions on the first carrier and on the second carrier. As a result, the UE may transmit, during the single uplink transmission mode, on both the first carrier and the second carrier in accordance with the uplink transmission timing pattern configuration for the first carrier and the uplink carrier switching periods.

公开(公告)号：US20220123801A1

公开(公告)日：2022-04-21

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 Binarnira 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：US20220109481A1

公开(公告)日：2022-04-07

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: H04B7/06 ,  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.

公开(公告)号：US20190036579A1

公开(公告)日：2019-01-31

申请号：US16077272

申请日：2017-03-10

Applicant: Chao WEI ,  Bo CHEN ,  Liangming WU ,  Jilei HOU ,  QUALCOMM Incorporated

Inventor： Chao WEI ,  Bo CHEN ,  Liangming WU ,  Jilei HOU

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

Abstract: Enhanced hybrid channel state information (CSI) reference signal (CSI-RS) for full dimension multiple input, multiple output (FD-MIMO) is discussed in which a base station configures a first CSI-RS resource for non-precoded CSI-RS and a second CSI-RS resource for beamformed CSI-RS. The first and second CSI-RS resources are associated with the same CSI process in a hybrid CSI-RS operation. The UE provides a first CSI report including a first rank and precoding matrix indicator (PMI) based on measurement of the non-precoded CSI-RS. The base station may use this first CSI process. CSI report for the beamforming of the beamformed CSI-RS. The UE further provides a second CSI report including a second rank, second PMI, and CQI based on measurement of the beamformed CSI-RS. Additional aspects may provide for a base station to aggregate multiple two-port CSI-RS resource configurations into a single multiport CSI-RS resource configuration that may be dynamically shared between different UEs.

公开(公告)号：US20240214150A1

公开(公告)日：2024-06-27

申请号：US18547484

申请日：2021-01-15

Applicant: QUALCOMM Incorporated

Inventor： Kexin XIAO ,  Muhammad Sayed Khairy ABDELGHAFFAR ,  Yu ZHANG ,  Runxin WANG ,  Alexandros MANOLAKOS ,  Bo CHEN ,  Krishna Kiran MUKKAVILLI ,  Hwan Joon KWON ,  Yeliz TOKGOZ

IPC: H04L5/00 ,  H04W72/0446 ,  H04W72/1268 ,  H04W76/20

CPC classification number: H04L5/0051 ,  H04W72/0446 ,  H04W72/1268 ,  H04W76/20

Abstract: Aspects of the disclosure relate to utilizing SRS resources for various types of usages and configuring transmit power on the SRS resources. In an aspect, a user equipment (UE) may determine whether a time gap between a first sounding reference signal (SRS) resource for a first usage and a second SRS resource for a second usage in time is less than a time threshold. Further, the UE may transmit an SRS utilizing one of the first SRS resource or the second SRS resource for both the first usage and the second usage, in response to determining that the time gap is less than the time threshold.

公开(公告)号：US20230199755A1

公开(公告)日：2023-06-22

申请号：US17926562

申请日：2020-07-14

Applicant: QUALCOMM Incorporated

Inventor： Bo CHEN ,  Mingkai NAN ,  Hao XU

IPC: H04W72/1268 ,  H04W72/51 ,  H04W72/566 ,  H04L5/14

CPC classification number: H04W72/1268 ,  H04L5/14 ,  H04W72/51 ,  H04W72/566

Abstract: A wireless communication in a user device includes configuring a plurality of transmission chains with a plurality of carriers; and uploading data in a time-division duplexed (TDD) or frequency division duplex (FDD) transmission through the plurality of transmission chains. In some embodiments, two transmission chains and two carriers are used for carrier aggregation uplink of data. An apparatus may include a plurality of transmit chains, each of the plurality of transmit chains providing transmission of data using TDD or FDD transmissions; a plurality of antennas, each of the antennas providing transmission of data from one of the plurality of transmit chains into one of a plurality of carriers; and a time-division multiplexed (TDM) switch coupled between the plurality of transmit chains and the plurality of antennas such that each of the plurality of transmit chains transmits data on one of the plurality of carriers.

公开(公告)号：US20220278813A1

公开(公告)日：2022-09-01

申请号：US17597896

申请日：2020-08-03

Applicant: QUALCOMM Incorporated

Inventor： Bo CHEN ,  Chenxi HAO ,  Wentao ZHANG ,  Hao XU

IPC: H04L5/00 ,  H04W72/04 ,  H04L5/14 ,  H04L27/26

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that identifies a carrier that is to include a guard interval when transitioning between a first carrier and a second carrier for uplink transmissions. The UE may transmit the uplink transmissions according to the configuration. Numerous other aspects are provided.

公开(公告)号：US20220029673A1

公开(公告)日：2022-01-27

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: H04B7/0456 ,  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：US20230299899A1

公开(公告)日：2023-09-21

申请号：US18017555

申请日：2020-09-04

Applicant: QUALCOMM Incorporated

Inventor： Bo CHEN ,  Wentao ZHANG ,  Hao XU

IPC: H04L5/00

CPC classification number: H04L5/0035 ,  H04L5/0048

Abstract: The present disclosure relates to methods and devices for wireless communication including an apparatus, e.g., a UE and/or a base station. In one aspect, the apparatus may transmit an interference indication associated with DSS, the interference indication corresponding to a capability of a CRS interference cancellation. The apparatus may also receive CRS assistance information associated with the DSS, the CRS assistance information corresponding to one or more interfering cells. Additionally, the apparatus may determine at least one of a location or a sequence of at least one CRS, the at least one CRS corresponding to at least one of the one or more interfering cells. The apparatus may also mitigate interference from the at least one CRS corresponding to the at least one interfering cell, the interference being mitigated based on at least one of the location or the sequence of the at least one CRS.

公开(公告)号：US20230171080A1

公开(公告)日：2023-06-01

申请号：US17917546

申请日：2021-04-23

Applicant: QUALCOMM Incorporated

Inventor： Bo CHEN ,  Mingkai NAN ,  Alexei Yurievitch GOROKHOV

IPC: H04L5/14 ,  H04L5/00

CPC classification number: H04L5/1469 ,  H04L5/0051 ,  H04L5/001

Abstract: Wireless communications systems and methods related to transmitting communication signals with a carrier aggregated (CA) system TDD bands of a primary carrier component (PCC) and a secondary carrier component (SCC) PUSCH-less cell are provided. In particular, a CA frame structure with a PCC primary frame and an SCC secondary frame where a sounding reference signal (SRS) transmitted on the SCC secondary frame corresponds to a downlink slot on the PCC primary frame to avoid throughput loss. In some embodiments, the CA frame can be arranged such that at least one of the uplink slots on the PCC frame corresponds with downlink slots on the SCC frame.