公开(公告)号：US20240244668A1

公开(公告)日：2024-07-18

申请号：US18574170

申请日：2021-08-05

Applicant: QUALCOMM INCORPORATED

Inventor： Muhammad Nazmul Islam ,  Jing Lei ,  Carsten Aagaard Pedersen ,  Murali Menon ,  Chao Wei

IPC: H04W74/0833 ,  H04B7/06 ,  H04L5/16

CPC classification number: H04W74/0833 ,  H04B7/06964 ,  H04L5/16

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may monitor for one or more downlink reference signals periodically transmitted from a base station during a first time period. The UE may determine that the UE is to participate in a random access procedure with the base station during a random access occasion, while the UE is operating in a half-duplex communication mode. The UE may identify that a first downlink reference signal is scheduled during a second time period that includes at least one random access occasion that corresponds with a reference signal for which the UE is configured to monitor, where the second time period is a subset of the first time period. As such, the UE may refrain from monitoring for the downlink reference signal during the time period in favor or proceeding with the random access procedure.

公开(公告)号：US11996940B2

公开(公告)日：2024-05-28

申请号：US18074039

申请日：2022-12-02

Applicant: QUALCOMM Incorporated

Inventor： Jian Li ,  Changlong Xu ,  Chao Wei ,  Jilei Hou

IPC: H04L1/14 ,  H03M13/13 ,  H03M13/27 ,  H03M13/29 ,  H04L1/00

CPC classification number: H04L1/0071 ,  H03M13/13 ,  H03M13/2707 ,  H03M13/2742 ,  H03M13/2757 ,  H03M13/296 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/0061

Abstract: Aspects of the disclosure relate to wireless communication devices configured to encode information blocks to produce code blocks and interleave the code blocks utilizing an interleaver including a plurality of rows and a plurality of columns, where the number of columns of the interleaver varies between the rows. In some examples, the interleaver includes a right isosceles triangle-shaped matrix of rows and columns. In other examples, the interleaver includes a trapezoid-shaped matrix of rows and columns.

公开(公告)号：US11973518B2

公开(公告)日：2024-04-30

申请号：US17567587

申请日：2022-01-03

Applicant: QUALCOMM Incorporated

Inventor： Changlong Xu ,  Jian Li ,  Chao Wei ,  Jilei Hou

IPC: H03M13/00 ,  H03M13/13 ,  H03M13/29 ,  H04L1/00 ,  H04L1/08

CPC classification number: H03M13/6356 ,  H03M13/13 ,  H03M13/6362 ,  H03M13/2906 ,  H03M13/635 ,  H04L1/0013 ,  H04L1/0057 ,  H04L1/0067 ,  H04L1/08

Abstract: Various aspects of the disclosure relate to rate matching techniques for block encoding. In some aspects, a decision regarding whether to use repetition-based rate matching or puncture-based rate matching is made based on a block size of information being encoded. In some aspects, repetition-based rate matching uses a bit-reversal permutation technique.

公开(公告)号：US11855776B2

公开(公告)日：2023-12-26

申请号：US17645243

申请日：2021-12-20

Applicant: QUALCOMM Incorporated

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

IPC: H04L27/00 ,  H04L1/00

CPC classification number: H04L1/0057 ,  H04L1/0041

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：US11843558B2

公开(公告)日：2023-12-12

申请号：US16473917

申请日：2018-01-08

Applicant: QUALCOMM Incorporated

Inventor： Yu Zhang ,  Chao Wei ,  Wanshi Chen ,  Pavan Kumar Vitthaladevuni

IPC: H04L5/00 ,  H04B7/06

CPC classification number: H04L5/0051 ,  H04B7/0613 ,  H04L5/0091

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for transmitting multiplexed sounding reference signal (SRS) ports in communications systems operating according to new radio (NR) technologies. An exemplary method includes obtaining an indication of a technique to use in transmitting sounding reference signals (SRS) via five or more antenna ports in one slot and transmitting the SRS via the five or more antenna ports according to the indicated technique.

公开(公告)号：US11818725B2

公开(公告)日：2023-11-14

申请号：US17259145

申请日：2019-08-06

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Le Liu ,  Alberto Rico Alvarino

IPC: H04W72/10 ,  H04W72/04 ,  H04W72/23 ,  H04W72/0453

CPC classification number: H04W72/23 ,  H04W72/0453

Abstract: The present disclosure relates to methods and devices for flexible resource allocation. In one aspect, a base station can generate a narrowband data channel including a plurality of resource blocks (RBs). The base station may shift a position of the RBs of the narrowband data channel to align with a wideband resource block group (RBG) boundary. The base station can also adjust a precoding resource block group (PRG) for the narrowband data channel. Also, the base station can transmit the narrowband data channel to a User Equipment (UE) based on adjusting the PRG. In another aspect, the base station may align a beginning or last RB of the plurality of RBs with the wideband RBG boundary and/or align a beginning or last RB of the PRG with the wideband RBG boundary. In another aspect, the base station may transmit an indication to the UE indicating a flexible resource allocation.

公开(公告)号：US11791843B2

公开(公告)日：2023-10-17

申请号：US17443992

申请日：2021-07-29

Applicant: QUALCOMM INCORPORATED

Inventor： Changlong Xu ,  Jian Li ,  Jilei Hou ,  Chao Wei

IPC: H03M13/00 ,  H03M13/13 ,  H04B17/336 ,  H03M13/35 ,  H04L1/00 ,  H04L1/1812

CPC classification number: H03M13/13 ,  H03M13/353 ,  H04B17/336 ,  H04L1/0003 ,  H04L1/0013 ,  H04L1/1812

Abstract: Methods and apparatus for constructing polar codes are provided. A transmitter determines at least one set of parameters corresponding to data to be transmitted, and a set of sorting indices corresponding to bits of the data to be transmitted based on the set of parameters, the set of sorting indices indicating a position set of the bits to be transmitted. The transmitter polar encodes the data based at least on the set of parameters and the set of sorting indices to generate a coded block of the data, and transmits the coded block of the data.

公开(公告)号：US20230261722A1

公开(公告)日：2023-08-17

申请号：US18003099

申请日：2020-08-19

Applicant: QUALCOMM INCORPORATED

Inventor： Wei Xi ,  Yu Zhang ,  Hao Xu ,  Min Huang ,  Chao Wei ,  Changlong Xu ,  Liangming Wu ,  Chenxi Hao ,  Qiaoyu Li ,  Kangqi Liu ,  Jing Dai ,  Rui Hu ,  Jian Li

IPC: H04B7/06 ,  H04B7/08 ,  H01Q3/26

CPC classification number: H04B7/06956 ,  H04B7/086 ,  H01Q3/26

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a device may select antenna elements from a planar array to transmit or receive an orbital angular momentum (OAM) beam. The device may determine a first area (e.g., a first ring area) based on an angular direction over which the device can communicate an OAM beam with a second device and may determine a second area (e.g., a second ring area) on the planar array based on projecting the first area on the planar array. The device may select a set of antenna elements from the planar array that are located within the second area. The device may determine a complex-valued weight for each antenna element of the selected set of antenna elements and may transmit or receive an OAM beam to or from the second device via the set of antenna elements according to the angular direction.

公开(公告)号：US11652516B2

公开(公告)日：2023-05-16

申请号：US16673795

申请日：2019-11-04

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Yu Zhang ,  Jilei Hou

IPC: H04B7/0417 ,  H04B7/0456 ,  H04B7/06 ,  H04L5/00 ,  H04W72/04 ,  H04W72/044

CPC classification number: H04B7/0421 ,  H04B7/0482 ,  H04B7/065 ,  H04B7/0639 ,  H04L5/0023 ,  H04L5/0051 ,  H04L5/0057 ,  H04W72/042 ,  H04W72/044

Abstract: In an aspect, a method of wireless communication includes transmitting first reference signals from a base station using a first set of antenna ports, and receiving first feedback information at the base station from a user equipment (UE). The first feedback information may be associated with the first reference signals. The method includes configuring a first precoder based on the first feedback information, and transmitting second reference signals to the UE based on the configuration of the first precoder. The method includes receiving second feedback information at the base station from the UE. The second feedback information may be associated with the second reference signals. The method includes configuring a second precoder based on the second feedback information.

公开(公告)号：US20230131745A1

公开(公告)日：2023-04-27

申请号：US18057617

申请日：2022-11-21

Applicant: QUALCOMM Incorporated

Inventor： Min Huang ,  Chao Wei ,  Chenxi Hao ,  Liangming Wu ,  Qiaoyu Li

IPC: H04B7/0456 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described that provide for channel state information (CSI) feedback for multiple discrete Fourier transform (DFT) beams on multiple transmission layers. A user equipment (UE) may report a total number of non-zero power DFT beams across all of the transmission layers. The UE may be configured with a total number of leading beams (Ktotal) across all of the transmission layers for which to provide high quantization feedback. When the total number of non-zero DFT beams across all the transmission layers exceeds the configured total number of leading beams across all the transmission layers, the UE may report high-resolution quantization feedback for Ktotal non-zero power precoding coefficients having the highest amplitude coefficients, and may report low-resolution quantization feedback for the remaining non-zero power precoding coefficients. A base station may receive the CSI feedback to determine a precoding matrix.