公开(公告)号：US20210288668A1

公开(公告)日：2021-09-16

申请号：US17332847

申请日：2021-05-27

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Chao WEI ,  Jilei HOU

IPC: 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：US20210234639A1

公开(公告)日：2021-07-29

申请号：US17054917

申请日：2019-05-28

Applicant: Kai CHEN ,  Jian LI ,  Changlong XU ,  Liangming WU ,  Hao XU ,  Qualcomm incorporated

Inventor： Kai CHEN ,  Jian LI ,  Changlong XU ,  Liangming WU ,  Hao XU

IPC: H04L1/18 ,  H04L1/00 ,  H04L5/00

Abstract: A device may identify that an incremental redundancy hybrid automatic repeat request (IR-HARQ) scheme is used in association with sequential transmissions of an information bit vector to or from another wireless device, where each transmission in the scheme is associated with a resource size. The device may identify a mother code length for a polar code based at least in part on an aggregate resource size associated with the sequential transmissions. The device may identify an adjusted bit index set for the polar code based at least in part on the IR-HARQ scheme. The device may transmit (or receive), for each transmission of the information bit vector, a respective subset of encoded bits generated by mapping the information bit vector to a set of polarized bit channels of the polar code in accordance with the bit index set.

公开(公告)号：US20210105089A1

公开(公告)日：2021-04-08

申请号：US15733499

申请日：2019-01-17

Applicant: Kai CHEN ,  Liangming WU ,  Changlong XU ,  Jian UI ,  Hao XU ,  QUALCOMM Incorporated

Inventor： Kai CHEN ,  Liangming WU ,  Changlong XU ,  Jian LI ,  Hao XU

IPC: H04L1/00 ,  H04L1/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may perform a first polar code encoding process on a first transmission of a hybrid automatic repeat request (HARQ) process; generate a second transmission of the HARQ process by relocating a portion of bits in less reliable positions of the first transmission to more reliable positions of the second transmission of the HARQ process, wherein the less reliable positions and the more reliable positions are evaluated based at least in part on a channel transform, wherein the channel transform is based at least in part on the first transmission, the second transmission, the first polar encoding process and a second polar encoding process associated with the second transmission; and transmit the second transmission of the HARQ process. Numerous other aspects are provided.

公开(公告)号：US20190280829A1

公开(公告)日：2019-09-12

申请号：US16345621

申请日：2017-01-06

Applicant: QUALCOMM Incorporated

Inventor： Chao WEI ,  Jing JIANG ,  Changlong XU ,  Jilei HOU

IPC: H04L1/18 ,  H03M13/29 ,  H03M13/13

Abstract: The present disclosure describes various examples of a method, an apparatus, and a computer-readable medium for wireless communications (e.g., 5G NR) using hybrid automatic repeat request (HARQ). For example, one of the methods includes generating a first codeword based on a first code block length, transmitting a first signal using the first codeword, generating a second codeword with incremental redundancy information based on a second code block length, generating a third codeword with repetition of at least a portion of the first codeword based on a third code block length, and transmitting a second signal using at least the second codeword or the third codeword.

公开(公告)号：US20190123860A1

公开(公告)日：2019-04-25

申请号：US16091081

申请日：2017-03-03

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Jian LI ,  Chao WEI ,  Neng WANG ,  Jilei HOU

IPC: H04L1/18 ,  H03M13/13 ,  H03M13/00 ,  H04L1/00 ,  H04L5/00

Abstract: The present disclosure describes a method, an apparatus, and a computer readable medium for hybrid automatic repeat request (HARQ) transmissions. For example, the method may include generating a first codeword for a first information block, wherein the first codeword is a first polar code, and wherein the first information block includes cyclic redundancy check (CRC) bits; transmitting the first codeword to a receiver; determining that the first polar code is not successfully decoded at the receiver based at least on a first message received from the receiver; generating a second codeword for a second information block, wherein the second codeword is a first enhanced polar code, and wherein the second information block does not include any CRC bits; transmitting the second codeword to the receiver; and determining that the second codeword and the first codeword are successfully decoded at the receiver based at least on a second message received from the receiver.

公开(公告)号：US20180034593A1

公开(公告)日：2018-02-01

申请号：US15643003

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Jian LI ,  Chao WEI ,  Jilei HOU

IPC: H04L1/08 ,  H04L1/20 ,  H04L1/18 ,  H04L1/00

CPC classification number: H04L1/08 ,  H04L1/0011 ,  H04L1/0058 ,  H04L1/0061 ,  H04L1/0079 ,  H04L1/1671 ,  H04L1/1812 ,  H04L1/1896 ,  H04L1/203

Abstract: Certain aspects of the present disclosure relate to techniques and apparatus for design of hybrid automatic repeat request (HARQ) feedback bits. The method generally includes obtaining a payload to be transmitted, partitioning the payload into a plurality of blocks, and partitioning each block of the plurality of blocks into a plurality of sections. The method also includes deriving redundancy check information for each section of the plurality of sections, and generating a plurality of codewords, each comprising a block of the plurality of blocks and the redundancy check information for each section of the block, wherein a location of each of the sections in the codewords is determined based on an error rate corresponding to each of the sections.

公开(公告)号：US20250142451A1

公开(公告)日：2025-05-01

申请号：US18833740

申请日：2022-04-01

Applicant: QUALCOMM Incorporated

Inventor： Luanxia YANG ,  Aleksandar DAMNJANOVIC ,  Fang YUAN ,  Xiaoxia ZHANG ,  Tao LUO ,  Jing SUN ,  Jelena DAMNJANOVIC ,  Changlong XU ,  Rajat PRAKASH

IPC: H04W48/08

Abstract: Certain aspects of the present disclosure provide techniques for user equipment (UE) cooperation. Certain aspects provide a method for wireless communication by a target UE. The method generally includes receiving availability information indicating availability of one or more candidate UEs for cooperating with the target UE for communicating with a network entity, receiving assistance information from at least one of the candidate UEs, establishing a cooperation connection with the at least one of the candidate UEs based on the assistance information, and transmitting, to the network entity, an indication of UE capability based on the cooperation connection.

公开(公告)号：US20250141590A1

公开(公告)日：2025-05-01

申请号：US18933957

申请日：2024-10-31

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Ruiming ZHENG ,  Tao LUO ,  Hao XU

IPC: H04L1/00

Abstract: An apparatus, such as a base station, may determine channel conditions associated with at least two carriers on which communication with another apparatus is configured. The apparatus may encode a dataset into a set of protocol data units (PDUs) using fountain coding based on the channel conditions. The apparatus may send a first subset of the set of PDUs to the other apparatus on a first carrier of the at least two carriers. The apparatus may send a second subset of the set of PDUs to the other apparatus on a second carrier of the at least two carriers. Another apparatus, such as a user equipment (UE), may receive the set of PDUs from the apparatus over the at least two carriers, and may decode the set of PDUs to obtain a dataset using fountain coding.

公开(公告)号：US20250105944A1

公开(公告)日：2025-03-27

申请号：US18821786

申请日：2024-08-30

Applicant: QUALCOMM Incorporated

Inventor： Jian LI ,  Changlong XU ,  Chao WEI ,  Jilei HOU

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

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：US20250056568A1

公开(公告)日：2025-02-13

申请号：US18719168

申请日：2022-02-26

Applicant: QUALCOMM Incorporated

Inventor： Luanxia YANG ,  Aleksandar DAMNJANOVIC ,  Jing SUN ,  Changlong XU ,  Xiaoxia ZHANG ,  Shaozhen GUO ,  Siyi CHEN

IPC: H04W72/25 ,  H04W40/24

Abstract: Some aspects described herein relate to transmitting, by a first user equipment (UE), a cooperation discovery signal related to cooperative communication, and receiving, from one or more second UEs and in response to the cooperation discovery signal, a request to connect with the first UE for cooperative communication. Other aspects relate to receiving the cooperation discovery signal and transmitting the request in response to the cooperation discovery signal.