公开(公告)号：US10855405B2

公开(公告)日：2020-12-01

申请号：US16336250

申请日：2017-06-22

Applicant: QUALCOMM Incorporated

Inventor： Changlong Xu ,  Jian Li ,  Chao Wei ,  Chong Li ,  Joseph Binamira Soriaga ,  Jilei Hou

IPC: H04J11/00 ,  H04L1/18 ,  H04L1/00 ,  H04B17/336 ,  H03M13/13

Abstract: Various aspects of the disclosure relate to retransmission techniques for communication of information (e.g., for wireless communication). In some aspects, if a device's first transmission including encoded data and parity information (subject to puncture) fails, the device's retransmission (e.g., in response to a NAK) involves transmitting the parity information that was punctured. In some aspects, the coding rate used for encoding the data for the first transmission is selected to meet an error rate (e.g., a block error rate) for the second transmission. The second transmission may also include repetition information that includes the encoded data. The repetition information could also include at least a portion of the encoded parity information.

公开(公告)号：US10291359B2

公开(公告)日：2019-05-14

申请号：US15643003

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/18 ,  H04L1/00 ,  H04L1/08 ,  H04L1/16 ,  H04L1/20 ,  G08C25/02

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：US12302395B2

公开(公告)日：2025-05-13

申请号：US17995781

申请日：2020-05-27

Applicant: QUALCOMM Incorporated

Inventor： Changlong Xu ,  Jing Sun ,  Xiaoxia Zhang

IPC: H04W74/0816 ,  H04L27/26 ,  H04W52/52 ,  H04W74/08

Abstract: Wireless communications systems and methods related to communicating a sidelink communication among sidelink user equipment devices (UEs) are provided. A UE may determine a first starting point from a plurality of starting points and perform a listen-before-talk (LBT) to contend for a channel occupancy time (COT) beginning at the first starting point. The UE may transmit, during the COT based on the LBT, a sidelink communication beginning at the first starting point.

公开(公告)号：US12295035B2

公开(公告)日：2025-05-06

申请号：US17906509

申请日：2020-04-16

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Changlong Xu ,  Chih-Hao Liu ,  Ozcan Ozturk ,  Yisheng Xue

IPC: H04W74/0816 ,  H04L27/26 ,  H04W72/25 ,  H04W74/08

Abstract: Wireless communications systems and methods related to use of cyclic prefix (CP) extensions for channel occupancy time (COT) sharing among sidelink user equipment devices (UEs) are provided. A first UE detects a first sidelink transmission in a COT, the COT for sharing with multiple sidelink UEs including the first sidelink UE. The first UE may determine a CP extension length for transmitting a second sidelink transmission after the first sidelink transmission, where a gap duration between the first sidelink transmission and the second sidelink transmission satisfies a listen-before-talk (LBT) gap time threshold. The first UE may apply a CP extension having the CP extension length to the second sidelink transmission and transmit, to a second sidelink UE, the second sidelink transmission with the CP extension.

公开(公告)号：US12283973B2

公开(公告)日：2025-04-22

申请号：US18461809

申请日：2023-09-06

Applicant: QUALCOMM Incorporated

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

IPC: H03M13/00 ,  H03M13/13 ,  H03M13/35 ,  H04B17/336 ,  H04L1/00 ,  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：US20250056567A1

公开(公告)日：2025-02-13

申请号：US18717968

申请日：2022-02-24

Applicant: QUALCOMM INCORPORATED

Inventor： Siyi Chen ,  Jing Sun ,  Xiaoxia Zhang ,  Changlong Xu ,  Shaozhen Guo ,  Luanxia Yang

IPC: H04W72/25 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a first UE may be configured to transmit multiple sidelink synchronization signal blocks (S-SSBs) within an S-SSB period, the transmissions back-to-back or non-back-to-back. The first UE may determine one or more listen-before-talk occasions associated with the S-SSBs, participate in at least one listen-before-talk procedure during a listen-before-talk occasion, and transmit the multiple S-SSBs to a second UE. In some other examples, the first UE may identify a reference frequency position of a reference S-SSB in a sidelink BWP. The first UE may transmit the reference S-SSB and one or more additional S-SSBs to a second UE, the one or more additional S-SSBs having frequency positions following the reference frequency position.

公开(公告)号：US12191993B2

公开(公告)日：2025-01-07

申请号：US18261982

申请日：2021-03-18

Applicant: QUALCOMM INCORPORATED

Inventor： Wei Liu ,  Thomas Joseph Richardson ,  Liangming Wu ,  Changlong Xu ,  Ori Shental ,  Hao Xu

IPC: H04L1/00 ,  H03M13/00 ,  H03M13/11

Abstract: Methods, systems, and devices for wireless communication are described to support replacing values of one or more information bit vectors with one or more corresponding sets of parity bits. A first wireless device may replace an information bit vector with a parity bit vector, using a set of information bits of the information bit vector and based on a parity check matrix, which may result in generating the set of information bits at an information bit vector corresponding to a parity bit column of the parity check matrix, during encoding. The first wireless device may perform a transmission to a second wireless device, which may receive the transmission, decode the set of information bits to the information bit vector corresponding to the parity bit column. The second wireless device may replace other bit estimates of a vector corresponding to an information bit column with the set of information bits.

公开(公告)号：US20240406052A1

公开(公告)日：2024-12-05

申请号：US18694309

申请日：2021-12-01

Applicant: QUALCOMM INCORPORATED

Inventor： Kexin Xiao ,  Liangming Wu ,  Changlong Xu ,  Wei Liu ,  Jian Li ,  Kangqi Liu ,  Hao Xu

IPC: H04L27/34 ,  H04L27/36 ,  H04L27/38

Abstract: Methods, systems, and devices for scrambling for probabilistic constellation schemes (PCSs) in wireless communications are described. In some examples, a first wireless device may scramble a set of amplitude information bits associated with a transport block for transmission to a second wireless device. In such examples, the first wireless device may perform a distribution matching procedure on the scrambled set of amplitude information bits. The first wireless device may encode the set of distributed amplitude bits and, in some cases, may perform a modulation procedure on the encoded set of distributed amplitude bits in accordance with a PCS scheme to obtain a codeword associated with the transport block. In some examples, the first wireless device may transmit the codeword to the second wireless device.

公开(公告)号：US12069699B2

公开(公告)日：2024-08-20

申请号：US18067500

申请日：2022-12-16

Applicant: QUALCOMM Incorporated

Inventor： Liangming Wu ,  Kangqi Liu ,  Changlong Xu ,  Jian Li ,  Hao Xu

IPC: H04L1/02 ,  H04B7/0413 ,  H04L1/16 ,  H04W72/23 ,  H04W72/30

CPC classification number: H04W72/30 ,  H04B7/0413 ,  H04L1/16 ,  H04W72/23

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit an encoded transmission via a broadcast to multiple user equipment (UE). Subsequently, the multiple UEs may transmit assistance information to the base station based on attempting to decode the broadcasted encoded transmission. If the decoding is unsuccessful for at least one UE, the base station may then transmit an additional encoded transmission via a unicast or multicast message to the UEs that were unsuccessful. Additionally, the base station may transmit configuration information for the multiple UEs to receive the encoded transmissions and to transmit the assistance information. For example, the configuration information may include portion information for how long the encoded transmission is transmitted via the broadcast, via the unicast, when to transmit the assistance information, etc. In some cases, the configuration information may be based on UE metrics of the multiple UEs.

公开(公告)号：US12063653B2

公开(公告)日：2024-08-13

申请号：US17596360

申请日：2019-07-01

Applicant: QUALCOMM Incorporated

Inventor： Yuwei Ren ,  Chao Wei ,  Min Huang ,  Yu Zhang ,  Huilin Xu ,  Qiaoyu Li ,  Chenxi Hao ,  Liangming Wu ,  Hao Xu ,  Changlong Xu ,  Wanshi Chen

IPC: H04W72/21 ,  H04L5/14 ,  H04W72/23

CPC classification number: H04W72/21 ,  H04L5/14 ,  H04W72/23

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information for an uplink control channel, wherein the configuration information includes at least one of: a first resource identifier associated with a non-full-duplex (non-FD) zone, or a second resource identifier associated with a full-duplex (FD) zone. The UE may transmit uplink control information (UCI) on the uplink control channel in at least one of the non-FD zone or the FD zone in accordance with the configuration information. Numerous other aspects are provided.