公开(公告)号：US20240414670A1

公开(公告)日：2024-12-12

申请号：US18699851

申请日：2021-12-22

Applicant: QUALCOMM INCORPORATED

Inventor： Luanxia Yang ,  Changlong Xu ,  Rajat Prakash ,  Jing Sun ,  Xiaoxia Zhang ,  Ozcan Ozturk ,  Jing Dai ,  Shaozhen Guo ,  Siyi Chen

IPC: H04W56/00 ,  H04W92/18

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for propagation delay compensation (PDC). In some systems, a network entity and a group of user equipment (UEs) may support a group-based PDC procedure according to which the network entity may provide group-based PDC information to the group of UEs. In some aspects, a UE may participate in such a group-based PDC procedure in accordance with a clock accuracy constraint of the UE and depending on whether other UEs are likely to have similar PDC information. The network entity may assign an identifier (ID) to the group of UEs and scramble a message including the group-based PDC information using the ID. As such. UEs of the group of UEs may decode the message using the ID and adjust a timing of communications with the network entity using the group-based PDC information.

公开(公告)号：US12074706B2

公开(公告)日：2024-08-27

申请号：US17310189

申请日：2019-01-23

Applicant: QUALCOMM Incorporated

Inventor： Kai Chen ,  Changlong Xu ,  Liangming Wu ,  Jian Li ,  Jing Jiang ,  Hao Xu

IPC: H04L1/08

CPC classification number: H04L1/08

Abstract: Wireless communications systems and methods related to hybrid repeat request (HARQ) with rate splitting are provided. A first wireless communication device communicates, with a second wireless communication device, a first communication signal including a plurality of information bits. The first wireless communication device determines a number of bits in the plurality of information bits to be repeated in a second communication signal based on channel capacity information. The first wireless communication device communicates, with the second wireless communication device, the second communication signal including the plurality of information bits and a repetition of a subset of the plurality of information bits, where the subset of the plurality of information bits includes the determined number of bits.

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：US11791936B2

公开(公告)日：2023-10-17

申请号：US17866168

申请日：2022-07-15

Applicant: QUALCOMM Incorporated

Inventor： Kai Chen ,  Changlong Xu ,  Liangming Wu ,  Jian Li ,  Hao Xu

IPC: H04L1/00 ,  H03M13/13 ,  H03M13/00 ,  H04L1/1812 ,  H04L1/1829

CPC classification number: H04L1/0068 ,  H03M13/13 ,  H03M13/6306 ,  H03M13/6362 ,  H04L1/1819 ,  H04L1/1854

Abstract: Wireless devices may use polar codes for encoding transmissions and may support combining transmissions to improve decoding reliability (e.g., by achieving chase combining and incremental redundancy (IR) gains). For example, an encoding device may puncture a set of mother code bits using different puncturing patterns to obtain different redundancy versions for a first transmission and a re-transmission. Each puncturing pattern may correspond to an equivalent decoding performance. In some cases, to obtain equivalent puncture sets, the encoding device may perform punctured index manipulation procedures on an initial puncturing pattern. A punctured index manipulation procedure may involve switching a binary state for a binary bit at a same binary bit index for each puncture index in a puncturing pattern. A device may receive the transmissions generated using the equivalent puncture sets and may combine the information for improved decoding reliability.

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：US11777645B2

公开(公告)日：2023-10-03

申请号：US16967106

申请日：2019-02-07

Applicant: QUALCOMM Incorporated

Inventor： Changlong Xu ,  Liangming Wu ,  Kai Chen ,  Jian Li ,  Hao Xu ,  Tingfang Ji ,  Joseph Binamira Soriaga ,  Jing Jiang

IPC: H04L1/00 ,  H04L1/08 ,  H04L1/1812

CPC classification number: H04L1/0057 ,  H04L1/0026 ,  H04L1/0041 ,  H04L1/0072 ,  H04L1/08 ,  H04L1/1812

Abstract: Techniques are provided for retransmission of Physical Uplink Shared Channel (PUCCH) for Ultra Reliable Low Latency Communications (URLLC). A User Equipment (UE) transmits at least one code block of a control channel, the at least one code block including Channel State Information (CSI), wherein each code block is polar encoded by assigning bit indices of the code block to bit channels in a particular order of reliabilities of the bit channels. The UE detects a trigger, and in response, retransmits at least a portion of each code block including retransmitted CSI, wherein the portion is polar encoded by assigning bit indices of the retransmitted CSI to the bit channels in the reverse order of reliabilities of the bit channels as compared to the polar encoding of the CSI.

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：US20230261694A1

公开(公告)日：2023-08-17

申请号：US18005486

申请日：2020-09-09

Applicant: QUALCOMM Incorporated

Inventor： Shaozhen Guo ,  Jing Sun ,  Changlong Xu ,  Xiaoxia Zhang

IPC: H04B1/7143 ,  H04W74/08 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04B1/7143 ,  H04W74/0808 ,  H04L5/0078 ,  H04L27/2607

Abstract: Wireless communications systems and methods related to frequency hopping in uplink transmission. A UE may be configured to transmit a first subset of data on a first frequency band to a BS over a first set of symbols. The UE may perform a listen-before-talk (LBT) during an LBT gap comprising a second set of symbols between the first set of symbols and a third set of symbols. The UE may use the LBT in the LBT gap to determine availability of a second frequency sub-band for a second subset of data that is a repetition of the first subset of data. The UE may be configured to transmit the second subset of data on the second frequency band to the BS over a third set of symbols if the LBT passes. Thus, embodiments of the present disclosure enable a UE to perform frequency hopping with repetitions across unlicensed frequency sub-bands.