公开(公告)号：US11082066B2

公开(公告)日：2021-08-03

申请号：US16466270

申请日：2017-06-12

Applicant: QUALCOMM Incorporated

Inventor： Changlong Xu ,  Chao Wei ,  Jilei Hou

IPC: H03M13/00 ,  H03M13/13 ,  H03M13/09

Abstract: Aspects of the disclosure relate to wireless communication systems configured to provide techniques for multiplexing dedicated control information for a plurality of users in a single information block and polar coding the information block to produce a polar code block of dedicated control information for transmission over a wireless air interface. The information block may further include group cyclic redundancy check (CRC) information for the information block and individual CRC information for each dedicated control information.

公开(公告)号：US20210167891A1

公开(公告)日：2021-06-03

申请号：US17178012

申请日：2021-02-17

Applicant: Qualcomm Incorporated

Inventor： Jing Jiang ,  Gabi Sarkis ,  Yang Yang ,  Shrinivas Kudekar ,  Joseph Soriaga ,  Hari Sankar ,  Changlong Xu ,  Chao Wei

IPC: H04L1/00

Abstract: Methods, systems, and devices for encoding and decoding are described. To encode a vector, an encoder allocates information bits of the vector to channel instances of a channel that are separated into groups. The groups may vary in size and allocation of the information bits is based on a base sequence of a given length. During decoding, a decoder assigns different bit types to channels instances by dividing a codeword into a plurality of groups and assigning bit types to channel instances of the plurality of groups using the base sequence.

公开(公告)号：US20210135783A1

公开(公告)日：2021-05-06

申请号：US16487050

申请日：2017-12-14

Applicant: Yang YANG ,  Jing JIANG ,  Gabi SARKIS ,  Chao WEI ,  Jian LI ,  Changlong XU ,  Hari SANKAR ,  Joseph Binamira SORIAGA ,  QUALCOMM Incorporated

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

IPC: H04L1/00 ,  H03M13/13 ,  H03M13/01 ,  G06N7/00

Abstract: Methods, systems, and devices for wireless communication are described for mutual information based polar code construction. A wireless device may receive a codeword over a wireless channel, the codeword encoded using a polar code. The wireless device may identify a set of bit locations of the polar code corresponding to information bits of an encoded information bit vector. The set of bit locations may be determined based at least in part on a reliability order of the bit locations of the polar code, and the reliability order may be determined based at least in part on a recursive model that includes at least one mutual information transfer function that is applied at each polarization stage of multiple polarization stages of the polar code. The wireless device may decode the received codeword to obtain the information bit vector at the set of bit locations.

公开(公告)号：US10999822B2

公开(公告)日：2021-05-04

申请号：US16250814

申请日：2019-01-17

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Neng Wang ,  Peng Cheng ,  Wanshi Chen ,  Hao Xu ,  Peter Gaal ,  Jilei Hou

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04L1/18 ,  H04W72/14 ,  H04L1/00 ,  H04W72/02 ,  H04L5/22

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives, by a user equipment (UE) during a first subframe, an indication of a dynamic uplink/downlink (UL/DL) subframe configuration. The apparatus determines an uplink hybrid automatic repeat request (HARQ) timing based on an uplink reference subframe configuration and at least one of the dynamic UL/DL subframe configuration or a downlink reference subframe configuration. The apparatus selects an uplink subframe for communication based on the determined uplink HARQ timing.

公开(公告)号：US10952193B2

公开(公告)日：2021-03-16

申请号：US15063126

申请日：2015-03-13

Applicant: Ruiming Zheng ,  Chao Wei ,  QUALCOMM Incorporated

Inventor： Ruiming Zheng ,  Chao Wei

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

Abstract: Enhancement of long term evolution (LTE) time division duplex (TDD) carrier aggregation for half duplex user equipments (UEs) is discussed. In one aspect of enhanced TDD carrier aggregation, the UE monitoring for a control signal indicating subframe configuration for each TDD cell of an aggregated set of TDD cells in the same band. The UE may determine the downlink subframes and receive downlink transmissions on such subframes based on the control signal. In another aspect, the UE compares the number of scheduled uplink and downlink subframes between the TDD cells in the same band to determine the downlink error-control messaging timing for each cell.

公开(公告)号：US20210006310A1

公开(公告)日：2021-01-07

申请号：US17028974

申请日：2020-09-22

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/0456 ,  H04B7/06

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：US20200328792A1

公开(公告)日：2020-10-15

申请号：US16305591

申请日：2017-06-22

Applicant: Qualcomm Incorporated

Inventor： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Bo Chen

IPC: H04B7/06 ,  H04L5/00

Abstract: Mapping with CSI-RS resources with a code divisional multiplex (CDM) length of eight is disclosed. Such mapping allows for flexibly configuring the set of resource elements (REs) for mapping based on the available CSI-RS resources.

公开(公告)号：US10721119B2

公开(公告)日：2020-07-21

申请号：US15028805

申请日：2014-10-28

Applicant: QUALCOMM INCORPORATED ,  Wanshi Chen ,  Chao Wei ,  Peter Gaal ,  Hao Xu ,  Neng Wang

Inventor： Wanshi Chen ,  Chao Wei ,  Peter Gaal ,  Hao Xu ,  Neng Wang

IPC: H04L12/24 ,  H04W72/04 ,  H04L5/14 ,  H04L5/00

Abstract: Certain aspects of the present disclosure relate to techniques for cross-carrier indication of TDD (Time Division Duplex) UL (Uplink)/DL (Downlink) subframe configuration. A UE may receive a configuration of a first index for a first cell, wherein the first index is mapped to a first position in a Downlink Control Information (DCI) message. The UE may receive the DCI message in a subframe and determine an indication of a UL/DL subframe configuration for the first cell based on the first index and the DCI message. The UE may communicate with the first cell based on the determined UL/DL subframe configuration for the first cell.

公开(公告)号：US20200220603A1

公开(公告)日：2020-07-09

申请号：US16638197

申请日：2018-08-10

Applicant: Qualcomm Incorporated

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

IPC: H04B7/06 ,  H04B7/0456

Abstract: Methods, systems, and devices for wireless communication are described. In wireless systems supporting multiple-input, multiple-output (MIMO) transmissions, devices may implement beam-forming to improve reliability of communications. A user equipment (UE) may select a set of beams, and corresponding beam indices, for communication based on reference signals received from a base station. The UE may determine values corresponding to each of the beam indices using a scalable set of tables. For example, the UE may select a subset of the tables based on the number of selected beams, and may determine the values based on these tables. In this way, the UE may efficiently store sets of tables for multiple different configurations. The UE may sum the corresponding values to obtain a combination index value, and may transmit the combination index value to the base station. The base station may determine the selected beams based on this combination index value.

公开(公告)号：US20200178240A1

公开(公告)日：2020-06-04

申请号：US16615534

申请日：2018-06-15

Applicant: Yu ZHANG ,  Chao WEI ,  Liangming WU ,  Wanshi CHEN ,  QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L5/00

Abstract: Reporting aperiodic channel state information (A-CSI) via a physical uplink control channel (PUCCH) is disclosed. A UE receives a configuration to report aperiodic channel state information (A-CSI) using physical uplink control channel (PUCCH). The UE can report lightweight A-CSI via short/long PUCCH or may report heavy A-CSI via short/long PUCCH. The UE receives a trigger signal for PUCCH-based A-CSI reporting either by a dedicated downlink grant or by a group common DCI. When triggered via a DCI-based trigger, the PUCCH resource can be either a resource used for HARQ-ACK feedback, e.g., short PUCCH; or a semi-static configured PUCCH resource, e.g., either short PUCCH or long PUCCH. When triggered via a group common DCI-based trigger, the PUCCH resource can be either semi-statically configured, or dynamically indicated.