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    Shift-coefficient table design of QC-LDPC code for smaller code block sizes in mobile communications
    2.
    发明授权
    Shift-coefficient table design of QC-LDPC code for smaller code block sizes in mobile communications 有权

    公开(公告)号：US10484013B2

    公开(公告)日：2019-11-19

    申请号：US16019947

    申请日：2018-06-27

    Applicant: MediaTek Inc.

    Inventor： Chong-You Lee ,  Timothy Perrin Fisher-Jeffes ,  Mao-Ching Chiu ,  Wei-Jen Chen ,  Ju-Ya Chen

    IPC: H03M13/11 ,  H03M13/03 ,  H03M13/00 ,  H04L1/00 ,  H04L1/18

    Abstract: A processor of an apparatus establishes a wireless communication link with at least one other apparatus via a transceiver of the apparatus. The processor wirelessly communicates with the other apparatus via the wireless communication link by: selecting a first shift-coefficient table from a plurality of shift-coefficient tables; generating a QC-LDPC code using a base matrix and at least a portion of the first shift-coefficient table; selecting a codebook from a plurality of codebooks embedded in the QC-LDPC code; storing the selected codebook in a memory associated with the processor; encoding data using the selected codebook to generate a plurality of modulation symbols of the data; and controlling the transceiver to multiplex, convert, filter, amplify and radiate the modulation symbols as electromagnetic waves through one or more antennas of the apparatus to transmit the modulation symbols of the data to the other apparatus via the wireless communication link.

    HARQ Buffer Size Design For Communication Systems
    3.
    发明申请
    HARQ Buffer Size Design For Communication Systems 审中-公开

    公开(公告)号：US20190103944A1

    公开(公告)日：2019-04-04

    申请号：US16149085

    申请日：2018-10-01

    Applicant: MediaTek Inc.

    Inventor： Wei-De Wu ,  Timothy Perrin Fisher-Jeffes ,  Yen-Shuo Chang ,  Chia-Wei Tai ,  Hsien-Kai Hsin ,  Pei-Kai Liao

    IPC: H04L1/18 ,  H04L1/00

    Abstract: Techniques and examples of hybrid automatic repeat request (HARQ) buffer size design for communication systems are described. A user equipment (UE) communicates with a serving cell of a wireless network using a HARQ mechanism, with the communicating involving: (a) determining, by the processor, a respective size of each buffer of a plurality of buffers corresponding to a plurality of HARQ processes on a per-HARQ process basis; and (b) storing, by the processor, respective information in each buffer of the plurality of buffers for a corresponding HARQ process among the plurality of HARQ processes.

    QC-LDPC codes
    5.
    发明授权
    QC-LDPC codes 有权

    公开(公告)号：US10659079B2

    公开(公告)日：2020-05-19

    申请号：US15971350

    申请日：2018-05-04

    Applicant: Mediatek Inc.

    Inventor： Cheng-Yi Hsu ,  Chong-You Lee ,  Wei Jen Chen ,  Maoching Chiu ,  Timothy Perrin Fisher-Jeffes ,  Ju-Ya Chen ,  Yen Shuo Chang

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

    Abstract: An apparatus determines a code block size (CBS) of information bits contained in a codeword of low-density parity check (LDPC) coding. The apparatus compares the CBS with at least one threshold, determines, based on a result of the comparison, a Kb number and determines a Kp number based on a code rate and the Kb number. The apparatus generates a parity check matrix. An information portion of the parity check matrix is a first matrix formed by M number of second square matrices. M is equal to Kp multiplied by Kb. A total number of columns in the Kb number of second square matrices is equal to a total number of bits of the CBS. One or more matrices of the M number of second square matrices are circular permutation matrices. The apparatus operates an LDPC encoder or an LDPC decoder based on the parity check matrix.

    Method and apparatus for communication
    6.
    发明授权
    Method and apparatus for communication 有权

    公开(公告)号：US10601544B2

    公开(公告)日：2020-03-24

    申请号：US15888733

    申请日：2018-02-05

    Applicant: MEDIATEK INC.

    Inventor： Chong-You Lee ,  Cheng-Yi Hsu ,  Maoching Chiu ,  Timothy Perrin Fisher-Jeffes ,  Ju-Ya Chen ,  Yen Shuo Chang ,  Wei Jen Chen

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

    Abstract: Aspects of the disclosure provide an apparatus that includes transmitting circuit and processing circuit. The transmitting circuitry is configured to transmit wireless signals. The processing circuitry is configured to encode a set of information bits with a code that is configured for incremental redundancy to generate a code word that includes the information bits and parity bits, buffer the code word in a circular buffer, determine a start position in the circular buffer based on a redundancy version that is selected from a plurality of redundancy versions based on a scenario evaluation of a previous transmission associated with the set of information bits, and transmit, via the transmitting circuitry, a selected portion of the code word from the start position.

    QC-LDPC coding methods and apparatus
    8.
    发明授权
    QC-LDPC coding methods and apparatus 有权

    公开(公告)号：US10164659B2

    公开(公告)日：2018-12-25

    申请号：US15594239

    申请日：2017-05-12

    Applicant: MediaTek Inc.

    Inventor： Mao-Ching Chiu ,  Chong-You Lee ,  Cheng-Yi Hsu ,  Timothy Perrin Fisher-Jeffes ,  Yen-Shuo Chang ,  Wei-Jen Chen ,  Ju-Ya Chen

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

    Abstract: Concepts and schemes pertaining to quasi-cyclic-low-density parity-check (QC-LDPC) coding are described. A processor of an apparatus may generate a QC-LDPC code having a plurality of codebooks embedded therein. The processor may select a codebook from the plurality of codebooks. The processor may also encode data using the selected codebook. Alternatively or additionally, the processor may generate the QC-LDPC code including at least one quasi-row orthogonal layer. Alternatively or additionally, the processor may generate the QC-LDPC code including a base matrix a portion of which forming a kernel matrix that corresponds to a code rate of at least a threshold value.

    NR LDPC With Interleaver
    9.
    发明申请
    NR LDPC With Interleaver 审中-公开

    公开(公告)号：US20180131392A1

    公开(公告)日：2018-05-10

    申请号：US15802265

    申请日：2017-11-02

    Applicant: MediaTek Inc.

    Inventor： Timothy Perrin Fisher-Jeffes ,  Wei-Jen Chen ,  Ju-Ya Chen ,  Mao-Ching Chiu ,  Yen-Shuo Chang ,  Cheng-Yi Hsu

    IPC: H03M13/25 ,  H03M13/27 ,  H04L1/00

    CPC classification number: H03M13/255 ,  H03M13/116 ,  H03M13/27 ,  H03M13/2742 ,  H03M13/6306 ,  H04L1/0041 ,  H04L1/0071

    Abstract: Concepts and schemes pertaining to information coding for mobile communications are described. A processor of an apparatus encodes data to provide encoded data. The processor also transmits the encoded data to a network node of a wireless network. In encoding the data, the processor encodes the data with a low-density parity-check (LDPC) code to provide LDPC-coded data. Moreover, the processor processes the LDPC-coded data with a forward error correction (FEC) robustness enhancement function to provide the encoded data. The FEC robustness enhancement function includes an interleaving function that interleaves the LDPC-coded data to provide the encoded data, an interlacing function that interlaces the LDPC-coded data to provide the encoded data, or a bit-reordering function that reorders bits of the LDPC-coded data to provide the encoded data.

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