公开(公告)号：US11116001B2

公开(公告)日：2021-09-07

申请号：US16603736

申请日：2018-05-09

Applicant: QUALCOMM Incorporated ,  Chao Wei ,  Kapil Bhattad ,  Alberto Rico Alvarino

Inventor： Chao Wei ,  Kapil Bhattad ,  Alberto Rico Alvarino ,  Hao Xu

IPC: H04W72/14 ,  H04W4/70

Abstract: A method, a user equipment, an apparatus, and a computer program product for wireless communication are provided. The apparatus may receive a grant identifying an uplink resource allocation of less than one physical resource block (PRB), wherein the grant identifies a particular PRB in which the uplink resource allocation is included and at least a group of subcarriers allocated for the apparatus; and transmit uplink data using the uplink resource allocation. Numerous other aspects are described.

公开(公告)号：US11057055B2

公开(公告)日：2021-07-06

申请号：US16476053

申请日：2018-01-08

Applicant: QUALCOMM Incorporated

Inventor： Liangming Wu ,  Changlong Xu ,  Jing Jiang ,  Chao Wei ,  Jilei Hou

IPC: H03M13/00 ,  H03M13/15 ,  H03M13/11 ,  H04L1/00

Abstract: Wireless communication devices are adapted to employ Golay-based matrices for encoding a wireless transmissions. According to at least one example, a wireless communication device can identify an information vector to be transmitted as a wireless communication. A Golay-based generator matrix may be selected based on a length of the information vector, where the selected Golay-based generator matrix is generated by shortening a Golay generator matrix by removing a plurality of columns of systematic bits and a plurality of rows to obtain the shortened generator matrix, and extending the shortened generator matrix to obtain an extended generator matrix by adding columns to at least the systematic bits and appending rows to obtain a desired matrix size. A respective bit value may be determined for bits in each added column and for at least some of the bits in each appended row. Other aspects, embodiments, and features are also included.

公开(公告)号：US10972328B2

公开(公告)日：2021-04-06

申请号：US16224227

申请日：2018-12-18

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Xiao Feng Wang ,  Alberto Rico Alvarino ,  Le Liu ,  Wanshi Chen

IPC: H04L27/26 ,  H04W72/04 ,  H04L5/00 ,  H04L27/18 ,  H04B7/0456

Abstract: Methods, apparatuses, and computer program products for wireless communication are provided. A user equipment (UE) may be configured to determine a phase rotation for a symbol based at least in part on a tone index. The UE may be configured to apply the phase rotation to the received symbol, and transmit the uplink symbol. Numerous other aspects are provided.

公开(公告)号：US10938539B2

公开(公告)日：2021-03-02

申请号：US16343538

申请日：2017-11-03

Applicant: QUALCOMM INCORPORATED

Inventor： Alexandros Manolakos ,  Chao Wei ,  Pavan Kumar Vitthaladevuni ,  Yu Zhang ,  Hao Xu ,  Wanshi Chen

IPC: H04L5/00 ,  H04L25/02 ,  H04B7/06 ,  H04W72/12

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for a UE to flexibly indicate a preferred precoding resource block group (PRG) size to a base station (e.g., an eNB).

公开(公告)号：US20210058120A1

公开(公告)日：2021-02-25

申请号：US17092764

申请日：2020-11-09

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Neng Wang ,  Xiaohui Liu ,  Jilei Hou

IPC: H04B7/0456 ,  H04B7/06 ,  H04L5/00 ,  H04L27/26

Abstract: Design of precoding and feedback for user equipment (UE)-specific reference signals (UE-RS)-based open-loop and semi-open-loop multiple input, multiple output (MIMO) systems is discussed. Aspects of the present disclosure provide for sub-resource block (RB) random precoding that allows for greater diversity gain in a lower bandwidth. In addition, the recoding may be performed using resource element (RE)-level layer shifting that provides for a number of precoders to be assigned to a number of layers for every such continuous subcarrier. As such, two codewords may experience the same effective channel quality with channel quality indicators (CQI) being averaged across all of the layers.

公开(公告)号：US10862625B2

公开(公告)日：2020-12-08

申请号：US16476890

申请日：2018-02-17

Applicant: Qualcomm Incorporated

Inventor： Yang Yang ,  Jing Jiang ,  Changlong Xu ,  Gabi Sarkis ,  Chao Wei ,  Hari Sankar ,  Jian Li ,  Joseph Binamira Soriaga

IPC: H04L1/00 ,  H04L1/16 ,  H04L5/00 ,  H03M13/00

Abstract: Techniques are described for wireless communication. One method includes identifying a set of punctured bit locations in a received codeword. The received codeword is encoded using a polar code. The method also includes identifying a set of information bit locations of the polar code, with the set of information bit locations being determined based at least in part on polarization weights per polarized bit-channel of a polar code decoder that are a function of nulled repetition operations per polarization stage of the polar code identified based at least in part on the set of punctured bit locations. The method further includes processing the received codeword using the polar code decoder to obtain an information bit vector at the set of information bit locations.

公开(公告)号：US10826577B2

公开(公告)日：2020-11-03

申请号：US15531131

申请日：2015-01-19

Applicant: QUALCOMM Incorporated ,  Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Yu Zhang

Inventor： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Yu Zhang

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/17 ,  H04B7/26

Abstract: Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a single CSI process is defined that is configured with an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.

公开(公告)号：US10727920B2

公开(公告)日：2020-07-28

申请号：US16085498

申请日：2017-04-27

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Wanshi Chen ,  Peter Gaal

IPC: H04B7/06 ,  H04L5/00 ,  H04L1/16 ,  H04B7/0456 ,  H04W72/04

Abstract: Dynamic channel state information (CSI) reference signal (CSI-RS) activation/deactivation via layer 1 signaling is discussed. An eNB may configure multiple dynamic CSI-RS resource configurations for a given user equipment (UE). Multiple dynamic CSI-RS configurations may be associated with CSI processes, and also one or more dynamic CSI-RS resources may be associated with multiple CSI processes. Each dynamic CSI-RS resource configuration may include the number of ports, RE locations, and power ratio, as well as the subframe configuration, which may include periodicity and subframe offset. The eNB may dynamically trigger or release the different dynamic CSI-RS resources through layer 1 signaling. Additional aspects provide for ways to determine dynamic CSI-RS transmission instances, to enhance rate matching to support dynamic CSI-RS transmissions, and to report CSI for dynamic CSI-RS resources.

公开(公告)号：US20200186303A1

公开(公告)日：2020-06-11

申请号：US16615397

申请日：2018-06-14

Applicant: Qualcomm Incorporated

Inventor： Chenxi Hao ,  Yu Zhang ,  Chao Wei ,  Liangming Wu ,  Wanshi Chen

IPC: H04L5/00 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0404 ,  H04L1/00

Abstract: The described techniques provide for the use of sub-band-specific reference signal precoding. A user equipment (UE) may apply multiple precoding matrices to a reference signal to generate a set of precoded reference signals and may transmit the precoded reference signals over respective sub-bands within a given reference signal resource set. In some cases, the UE may transmit a different set of precoded reference signals in each of multiple reference signal resource sets. Upon receiving the precoded reference signals, a base station may perform wideband channel estimation for each sub-band in the given reference signal resource set. The base station may compute an average spectral efficiency for each reference signal resource set and may transmit a report to the UE. The report may include one or more communication parameters for future communications between the UE and base station.

公开(公告)号：US20200178241A1

公开(公告)日：2020-06-04

申请号：US16623362

申请日：2018-06-13

Applicant: Qualcomm Incorporated

Inventor： Liangming Wu ,  Yu Zhang ,  Chao Wei ,  Chenxi Hao ,  Wanshi Chen

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00

Abstract: Methods, systems, and devices are described for wireless communications that support transmitting channel state information (CSI) feedback utilizing flexible uplink control resources. A method may include determining a size of a frequency subband corresponding to components of a CSI feedback report based on configuration signaling or a size of allocated uplink control resources. A method may include encoding a CSI report into a single packet and transmitting the single packet over uplink control resources. A method may include encoding a first plurality of components of a CSI report in a first packet, encoding a second plurality of components of the CSI report in a second packet, and mapping the packets to uplink control resources. A method may include transmitting a first plurality of components of a CSI report on a first slot and a second plurality of components of the CSI report on one or more subsequent slots.