公开(公告)号：US20210036718A1

公开(公告)日：2021-02-04

申请号：US15733711

申请日：2019-04-02

Applicant: Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jing JIANG ,  Hao XU ,  QUALCOMM INCORPORATED

Inventor： Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jing JIANG ,  Hao XU

IPC: H03M13/13 ,  H03M13/00 ,  H03M13/43 ,  H03M13/45 ,  H04L1/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an encoding device may determine a least reliable subset of information bits included in a set of information bits that includes a predefined active set of information bits to be encoded; may determine a codeword bit to be added to a codeword based at least in part on the least reliable subset of information bits, wherein adding the codeword bit to the codeword improves reliability of the least reliable subset of information bits; may add the codeword bit to the codeword; and may transmit the codeword. Numerous other aspects are provided.

公开(公告)号：US20200187166A1

公开(公告)日：2020-06-11

申请号：US16336303

申请日：2017-07-11

Applicant: Changlong XU ,  Jian LI ,  Chao WEI ,  Chong LI ,  Tingfang JI ,  Jilei HOU ,  QUALCOMM Incorporated

Inventor： Changlong XU ,  Jian LI ,  Chao WEI ,  Chong LI ,  Tingfang JI ,  Jilei HOU

IPC: H04W72/04 ,  H04L1/00

Abstract: Various aspects of the disclosure relate to mapping different information to different sub-channels. For example, information for different users may be mapped to different Polar code sub-channels. In some aspects, the mapping may be unbalanced in that different information is mapped to different sub-channels according to the quality (e.g., in terms of error probability) of the sub-channels and a criterion associated with the information. For example, control information for users that are experiencing the worst channel quality (e.g., in a wireless communication channel) may be mapped to the Polar code sub-channels that have the best quality.

公开(公告)号：US20200021309A1

公开(公告)日：2020-01-16

申请号：US16336213

申请日：2017-07-11

Applicant: QUALCOMM Incorporated

Inventor： Changlong XU ,  Shrinivas KUDEKAR ,  Thomas RICHARDSON ,  Joseph Binamira SORIAGA

IPC: H03M13/09 ,  H03M13/11 ,  H03M13/29 ,  H03M13/13

Abstract: Various aspects of the disclosure relate to encoding information and decoding information. In some aspects, the disclosure relates to an encoder and a decoder for Polar codes with HARQ. If a first transmission of the encoder fails, information bits associated with a lower quality channel may be retransmitted. At the decoder, the resulting decoded retransmitted bits may be used to decode the first transmission by substituting the retransmitted bits for the original corresponding (low quality channel) bits. In some aspects, to decode the first transmission, soft-combining is applied to the decoded retransmitted bits and the original corresponding (low quality channel) bits. In some aspects, CRC bits for a first transmission may be split between a first subset of bits and a second subset of bits. In this case, the second subset of bits and the associated CRC bits may be used for a second transmission (e.g., a retransmission).

公开(公告)号：US20190296776A1

公开(公告)日：2019-09-26

申请号：US16317395

申请日：2017-06-12

Applicant: Changlong XU ,  Jian LI ,  Chao WEI ,  Jilei HOU ,  QUALCOMM Incorporated

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

IPC: H03M13/00 ,  H03M13/13

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：US20180375615A1

公开(公告)日：2018-12-27

申请号：US16065077

申请日：2016-08-17

Applicant: QUALCOMM Incorporated

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

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

CPC classification number: H04L1/0068 ,  H03M13/13 ,  H03M13/618 ,  H03M13/6362 ,  H04L1/0054 ,  H04L1/0057

Abstract: Polar codes may be generated with a variable block length utilizing puncturing. Some puncturing schemes consider punctured bits as unknown bits, and set the log likelihood ratio (LLR) for those bits to zero; while other puncturing schemes consider punctured bits as known bits, and set the LLR for those bits to infinity. Each of these puncturing schemes has been observed to provide benefits over the other under different circumstances, especially corresponding to different coding rates or different signal to noise ratio (SNR). According to aspects of the present disclosure, both puncturing schemes are compared, and the puncturing scheme resulting in the better performance is utilized for transmission.

公开(公告)号：US20250142591A1

公开(公告)日：2025-05-01

申请号：US18833334

申请日：2022-03-29

Applicant: QUALCOMM Incorporated

Inventor： Luanxia YANG ,  Changlong XU ,  Jing SUN ,  Xiaoxia ZHANG ,  Hao XU ,  Shaozhen GUO ,  Xiaojie WANG ,  Siyi CHEN

IPC: H04W72/25 ,  H04W72/0446

Abstract: Methods, apparatuses, and computer-readable medium for sidelink communications may be provided. An example method may include receiving, from a second UE, a sidelink communication. The example method may include transmitting, to the second UE based on the sidelink communication, a physical sidelink feedback channel (PSFCH), the PSFCH spanning multiple symbols in a time domain, including a set of repetitions in a frequency domain, or spanning more than one resource blocks (RBs).

公开(公告)号：US20250097931A1

公开(公告)日：2025-03-20

申请号：US18730989

申请日：2022-03-10

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04W8/24

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a network entity, a scheduling request that indicates full antenna panel availability or partial antenna panel availability. The UE may receive, from the network entity, an uplink grant that schedules an uplink communication in connection with the scheduling request, wherein the uplink grant is based at least in part on the full antenna panel availability or the partial antenna panel availability indicated by the scheduling request. Numerous other aspects are described.

公开(公告)号：US20250008518A1

公开(公告)日：2025-01-02

申请号：US18709751

申请日：2022-01-07

Applicant: QUALCOMM Incorporated

Inventor： Jing DAI ,  Changlong XU ,  Le LIU ,  Chao WEI

IPC: H04W72/23 ,  H04L5/00 ,  H04W72/0453

Abstract: Certain aspects of the present disclosure provide techniques for wireless communication by a user equipment (UE), including receiving a physical broadcast channel (PBCH) that conveys a master information block (MIB) that configures a first control resource set (CORESET) within an operating bandwidth below a threshold bandwidth, determining, based on a mapping of time and frequency resources indicated in the MIB, physical resources within the first CORESET of one or more physical downlink control channel (PDCCH) candidates, and monitoring the one or more PDCCH candidates for a PDCCH with information scheduling a system information block (SIB).

公开(公告)号：US20240414695A1

公开(公告)日：2024-12-12

申请号：US18718506

申请日：2022-03-01

Applicant: QUALCOMM Incorporated

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

IPC: H04W68/02 ,  H04W52/02 ,  H04W72/25

Abstract: Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a first sidelink user equipment (UE) may include receiving, from a second sidelink UE, a request to monitor for at least one of a paging signal associated with the second sidelink UE or a wakeup signal (WUS) associated with the second sidelink UE, monitoring for the at least one of the paging signal or the wakeup signal based on the request, receiving, from a base station (BS), the at least one of the paging signal or the wakeup signal, and transmitting, to the second sidelink UE, the at least one of the paging signal or the wakeup signal.

公开(公告)号：US20240396675A1

公开(公告)日：2024-11-28

申请号：US18700658

申请日：2021-12-14

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/1867 ,  H04L5/00 ,  H04W24/10

Abstract: Methods, systems, and devices for wireless communications are described. Methods, systems, and devices for wireless communications are described. The described techniques provide for joint hybrid automatic repeat request (HARQ) feedback for sidelink transmissions and downlink transmissions. In some examples, a base station may transmit control signaling to a user equipment (UE) indicating a configuration for a joint HARQ codebook. The UE may receive a set of sidelink transmissions and a set of downlink transmissions, generate a joint HARQ codebook based on a downlink counter (e.g., a counter downlink assignment index) for the downlink transmissions and a sidelink counter (e.g., a counter sidelink assignment index) for the sidelink transmissions, where the downlink counter and the sidelink counter are jointly summed, and transmit feedback message to the base station for the downlink transmissions and the sidelink transmissions based on the joint HARQ codebook.