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    Enhanced polar code constructions by strategic placement of CRC bits
    1.
    发明授权
    Enhanced polar code constructions by strategic placement of CRC bits 有权

    公开(公告)号：US10348451B2

    公开(公告)日：2019-07-09

    申请号：US15919303

    申请日：2018-03-13

    Applicant: QUALCOMM Incorporated

    Inventor： Shrinivas Kudekar ,  Thomas Richardson

    IPC: H04L1/00 ,  H03M13/00 ,  H03M13/09 ,  H03M13/13 ,  H03M13/37 ,  H03M13/39

    Abstract: Certain aspects of the present disclosure relate to techniques and apparatus for improving decoding latency and performance of Polar codes. An exemplary method generally includes generating a codeword by encoding information bits, using a multi-dimensional interpretation of a polar code of length N, determining, based on one or more criteria, a plurality of locations within the codeword to insert error correction codes generating the error correction codes based on corresponding portions of the information bits, inserting the error correction codes at the determined plurality of locations, and transmitting the codeword. Other aspects, embodiments, and features are also claimed and described.

    Communication techniques involving pairwise orthogonality of adjacent rows in LPDC code
    2.
    发明授权
    Communication techniques involving pairwise orthogonality of adjacent rows in LPDC code 有权

    公开(公告)号：US10312939B2

    公开(公告)日：2019-06-04

    申请号：US16003047

    申请日：2018-06-07

    Applicant: QUALCOMM Incorporated

    Inventor： Thomas Richardson ,  Joseph Binamira Soriaga ,  Shrinivas Kudekar ,  Gabi Sarkis

    IPC: H03M13/00 ,  H03M13/11 ,  H04L1/00 ,  H04L5/00

    Abstract: Certain aspects of the present disclosure provide low-density parity-check (LDPC) codes having pairwise orthogonality of adjacent rows, and a new decoder that exploits the pairwise row orthogonality for flexible decoder scheduling without performance loss. An apparatus includes a receiver configured to receive a codeword in accordance with a radio technology across a wireless channel via one or more antenna elements situated proximal the receiver. The apparatus includes at least one processor coupled with a memory and comprising decoder circuitry configured to decode the codeword based on a LDPC code to produce a set of information bits. The LDPC code is stored in the memory and defined by a base matrix having columns in which all adjacent rows are orthogonal in a last portion of the rows.

    Coexistence of priority broadcast and unicast in peer-to-peer networks
    5.
    发明授权
    Coexistence of priority broadcast and unicast in peer-to-peer networks 有权

    公开(公告)号：US09883488B2

    公开(公告)日：2018-01-30

    申请号：US14954494

    申请日：2015-11-30

    Applicant: QUALCOMM Incorporated

    Inventor： Ying Wang ,  Sundar Subramanian ,  Xinzhou Wu ,  Junyi Li ,  Thomas Richardson

    IPC: H04W72/04 ,  H04L5/00 ,  H04L29/08

    CPC classification number: H04W72/04 ,  H04L5/0048 ,  H04L5/0055 ,  H04L5/0057 ,  H04L67/104 ,  H04L67/12 ,  H04W72/1252 ,  H04W72/1263

    Abstract: A method, a computer program product, and an apparatus are provided. In one configuration, the apparatus transmits a first broadcast signal including information indicating an intention to use a unicast resource for a broadcast. In addition, the apparatus transmits a second broadcast signal in the unicast resource. In another configuration, the apparatus, which is a first wireless device, receives a first broadcast signal from a second wireless device including information indicating an intention to use a unicast resource for a broadcast. In addition, the apparatus receives a first scheduling signal from the second wireless device in a scheduling resource. The first scheduling signal is for indicating a second intention to use the unicast resource for transmitting a second broadcast signal. Furthermore, the apparatus refrains from transmitting a second scheduling signal in the scheduling resource in response to the first scheduling signal.

    Techniques for rate matching and interleaving in wireless communications
    8.
    发明授权
    Techniques for rate matching and interleaving in wireless communications 有权

    公开(公告)号：US10778366B2

    公开(公告)日：2020-09-15

    申请号：US15940026

    申请日：2018-03-29

    Applicant: QUALCOMM Incorporated

    Inventor： Vincent Loncke ,  Raghunath Kalavai ,  Yi Cao ,  Thomas Richardson ,  Joseph Binamira Soriaga ,  Shrinivas Kudekar

    IPC: H04L1/00 ,  H03M13/11

    Abstract: Various aspects described herein relate to techniques for rate matching and interleaving in wireless communications (e.g., 5G NR). In an example, a method described herein includes encoding one or more information bits to generate a first codeblock, rate matching the first codeblock to generate a second codeblock, segmenting, using bit distribution, the second codeblock into one or more sub-blocks each having a plurality of bits. The method further includes interleaving the plurality of bits on each of the one or more sub-blocks, concatenating, using bit collection, the one or more sub-blocks to generate a third codeblock in response to the interleaving, and transmitting a signal using the third codeblock.

    Row orthogonality in LDPC rate compatible design
    9.
    发明授权
    Row orthogonality in LDPC rate compatible design 有权

    公开(公告)号：US10680646B2

    公开(公告)日：2020-06-09

    申请号：US15975440

    申请日：2018-05-09

    Applicant: QUALCOMM Incorporated

    Inventor： Thomas Richardson

    IPC: H03M13/11 ,  H03M13/00 ,  H04L1/00 ,  H04L1/18

    Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for decoding low-density parity check (LDPC) codes, for example, using a parity check matrix having full row-orthogonality. An exemplary method for performing low-density parity-check (LDPC) decoding includes receiving soft bits associated to an LDPC codeword and performing LDPC decoding of the soft bits using a parity check matrix, wherein each row of the parity check matrix corresponds to a lifted parity check of a lifted LDPC code, at least two columns of the parity check matrix correspond to punctured variable nodes of the lifted LDPC code, and the parity check matrix has row orthogonality between each pair of consecutive rows that are below a row to which the at least two punctured variable nodes are both connected.

    TECHNIQUES FOR RATE MATCHING AND INTERLEAVING IN WIRELESS COMMUNICATIONS
    10.
    发明申请
    TECHNIQUES FOR RATE MATCHING AND INTERLEAVING IN WIRELESS COMMUNICATIONS 审中-公开

    公开(公告)号：US20180294917A1

    公开(公告)日：2018-10-11

    申请号：US15940026

    申请日：2018-03-29

    Applicant: QUALCOMM Incorporated

    Inventor： Vincent Loncke ,  Raghunath Kalavai ,  Yi Cao ,  Thomas Richardson ,  Joseph Binamira Soriaga ,  Shrinivas Kudekar

    IPC: H04L1/00

    Abstract: Various aspects described herein relate to techniques for rate matching and interleaving in wireless communications (e.g., 5G NR). In an example, a method described herein includes encoding one or more information bits to generate a first codeblock, rate matching the first codeblock to generate a second codeblock, segmenting, using bit distribution, the second codeblock into one or more sub-blocks each having a plurality of bits. The method further includes interleaving the plurality of bits on each of the one or more sub-blocks, concatenating, using bit collection, the one or more sub-blocks to generate a third codeblock in response to the interleaving, and transmitting a signal using the third codeblock.

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