公开(公告)号：US10404413B2

公开(公告)日：2019-09-03

申请号：US15942261

申请日：2018-03-30

Applicant: QUALCOMM Incorporated

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

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

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：US20190215105A1

公开(公告)日：2019-07-11

申请号：US16336250

申请日：2017-06-22

Applicant: Changlong XU ,  Jian LI ,  Chao WEI ,  Chong LI ,  Joseph Binamina SORIAGA ,  Jelei HOU ,  QUALCOMM Incorporated

Inventor： Changlong XU ,  Jian Li ,  Chao WEI ,  Chong LI ,  Joseph Binamira SORIAGA ,  Jilei HOU

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

CPC classification number: H04L1/1819 ,  H03M13/13 ,  H04B17/336 ,  H04L1/00 ,  H04L1/0063 ,  H04L1/0068

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：US20180294922A1

公开(公告)日：2018-10-11

申请号：US15942261

申请日：2018-03-30

Applicant: QUALCOMM Incorporated

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

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

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：US12273193B2

公开(公告)日：2025-04-08

申请号：US17759620

申请日：2020-03-13

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/00 ,  H03M13/37

Abstract: Methods, systems, and devices for wireless communications are described. An encoding device may encode a set of source symbols using one or more raptor codes to generate a first set of encoded symbols and may transmit the first set of encoded symbols to a decoding device. The decoding device may successfully recover a source symbol of the set of source symbols from the first set of encoded symbols and may transmit an indication of the source symbol to the encoding device. The encoding device may encode one or more source symbols of the set of source symbols using the one or more raptor codes to generate a second set of encoded symbols based on receiving the indication of the source symbol and may transmit the second set of encoded symbols to the decoding device.

公开(公告)号：US12081333B2

公开(公告)日：2024-09-03

申请号：US18073974

申请日：2022-12-02

Applicant: QUALCOMM Incorporated

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

IPC: H03M13/00 ,  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：US11909470B2

公开(公告)日：2024-02-20

申请号：US17797382

申请日：2020-03-27

Applicant: QUALCOMM INCORPORATED

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

IPC: H04L1/02 ,  H04B7/0452 ,  H04L1/16

CPC classification number: H04B7/0452 ,  H04L1/16

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：US20240048430A1

公开(公告)日：2024-02-08

申请号：US18256724

申请日：2021-03-05

Applicant: QUALCOMM Incorporated

Inventor： Liangming Wu ,  Changlong Xu ,  Kangqi Liu ,  Jian Li ,  Ruiming Zheng ,  Hao Xu ,  Ori Shental

IPC: H04L27/34 ,  H04L1/00

CPC classification number: H04L27/3405 ,  H04L1/0042 ,  H04L1/0068

Abstract: Aspects of the disclosure relate to wireless communication utilizing a modulation and coding scheme that selectively or dynamically applies probabilistically-shaped coding (PCS) to modulate a transmitted waveform. A communication device may determine whether to apply PCS. If PCS is to be applied, the device can encode the message based on a systematic code; and if PCS is not to be applied, the device can encode the message based on a non-systematic code. Other aspects, embodiments, and features are also claimed and described

公开(公告)号：US20240007226A1

公开(公告)日：2024-01-04

申请号：US18253147

申请日：2021-01-13

Applicant: QUALCOMM Incorporated

Inventor： Liangming Wu ,  Kexin Xiao ,  Changlong Xu ,  Jian Li ,  Kangqi Liu ,  Ruiming Zheng ,  Ori Shental ,  Hao Xu ,  Thomas Joseph Richardson

IPC: H04L1/00 ,  H04L27/34

CPC classification number: H04L1/0071 ,  H04L1/0042 ,  H04L27/3411

Abstract: Aspects of the disclosure relate to wireless communication with a waveform configured according to probabilistic constellation shaping in connection with modulation. A wireless transmission device may determine a sequence of amplitude symbols from a sequence of information bits using a distribution matcher (DM) configured for probabilistic amplitude shaping. The device may further apply error correction coding to encode an information block corresponding to at least a portion of the sequence of amplitude symbols. And the device may generate a sequence of output symbols for transmission based on the encoded information block. In various examples, the device may apply interleaving to one or more of the sequence of amplitude symbols, the information block, the encoded information block, or a combination of the sequence of amplitude symbols and the encoded information block, for the generating of the sequence of output symbols. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20230318626A9

公开(公告)日：2023-10-05

申请号：US17443992

申请日：2021-07-29

Applicant: QUALCOMM INCORPORATED

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

IPC: H03M13/13 ,  H04B17/336 ,  H03M13/35 ,  H04L1/00 ,  H04L1/18

CPC classification number: H03M13/13 ,  H04B17/336 ,  H03M13/353 ,  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：US11646828B2

公开(公告)日：2023-05-09

申请号：US17045371

申请日：2019-04-04

Applicant: Qualcomm Incorporated ,  Jian Li ,  Changlong Xu ,  Jing Jiang ,  Kai Chen ,  Liangming Wu ,  Hao Xu

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

IPC: H04L1/18 ,  H04L1/00 ,  H04L1/1812

CPC classification number: H04L1/1812 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0063 ,  H04L1/0067

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, devices (e.g., base stations, user equipment (UEs), etc.) may utilize polar coding along with hybrid automatic repeat request (HARQ) techniques. In these systems, a device may encode bits for transmission by mapping information and parity check bits to a first set of polarized bit channels of a polar code. If this transmission is not successfully received at a decoding device, the encoding device may generate a HARQ retransmission. The device may copy information bits to a second set of polarized bit channels of a second polar code containing the first polar code and may assign parity check bits to the second set of bit channels for the copied information bits. These additional parity check bits for the repeated information bits may increase transmission reliability and may support improved early termination at the decoding device.