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    Polar code interleaving and bit selection
    2.
    发明授权
    Polar code interleaving and bit selection 有权

    公开(公告)号：US10425111B2

    公开(公告)日：2019-09-24

    申请号：US15889204

    申请日：2018-02-06

    Applicant: MEDIATEK INC.

    Inventor： Wei-De Wu ,  Chia-Wei Tai

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

    Abstract: Apparatus and methods are provided for polar code sub-block interleaving and bit selection. In one novel aspect, middle-part interlaced sub-block interleaving is provided for polar code interleaving. In one embodiment, the middle part of the polar code is interlaced and generates the interleaved polar code. In another embodiment, the lower part and the upper part are also sub-block interleaved with the middle-part interlaced method. In another novel, rate-dependent unified bit selection is provided. The bit selection is categorized into three operation categories of repetition, puncturing and the shortening. Each category follows unified bit selection rule with different categories differ only in the access scheme. In one embodiment, the circular buffer is used for bit selection.

    Broadcast Channel Enhancement with Polar Code
    3.
    发明申请
    Broadcast Channel Enhancement with Polar Code 审中-公开

    公开(公告)号：US20180198555A1

    公开(公告)日：2018-07-12

    申请号：US15863978

    申请日：2018-01-08

    Applicant: MEDIATEK INC.

    Inventor： Wei-De Wu ,  Chia-Wei Tai ,  Tao Chen ,  Yen-Cheng Liu ,  Xiu-Sheng Li ,  Wei-Jen Chen

    IPC: H04L1/00

    Abstract: A method of new radio physical broadcast channel (NR-PBCH) bit mapping is proposed to improve for NR-PBCH decoding performance under Polar codes. NR-PBCH carries 32 information bits and 24 CRC bits. Specifically, NR-PBCH uses 512-bit Polar codes to carry total 56 data bits. Different Polar code bit channels have different channel reliability. As a general rule, the most reliable Polar code bit channels are used for the 56 data bits. In accordance with a novel aspect, within the 32 NR-PBCH information bits, some of the information bits that can be known to the decoders under certain conditions and therefore are placed at the least reliable Polar code bit positions. As a result, by mapping the NR-PBCH data bits properly at the input bit positions of Polar codes, the NR-PBCH decoding performance is improved when the known bits a priori can be exploited.

    Method for performing polar decoding with aid of notation transformation and associated polar decoder
    4.
    发明授权
    Method for performing polar decoding with aid of notation transformation and associated polar decoder 有权

    公开(公告)号：US10608675B1

    公开(公告)日：2020-03-31

    申请号：US16125751

    申请日：2018-09-09

    Applicant: MEDIATEK INC.

    Inventor： Wei-Yeu Chen ,  Tien-Shin Ho ,  Shao-Ping Hung ,  Chia-Wei Tai ,  Tien-Yu Lin

    IPC: H03M13/37 ,  H03M13/39 ,  H03M13/13

    Abstract: A method for performing polar decoding with aid of notation transformation and associated polar decoder are provided. The method includes: transforming input signals from a 2's complement notation to a signed magnitude notation to generate transformed input signals, wherein during the polar decoding, a plurality of first sub-operations and a plurality of second sub-operations are performed to generate decoding results of the transformed input signals; performing a first sign processing to generate a sign result of a first sub-operation within the plurality of first sub-operations; performing a first magnitude processing to generate a magnitude result of the first sub-operation within the plurality of first sub-operations; performing a second sign processing to generate a sign result of a second sub-operation within the plurality of second sub-operations; and performing a second magnitude processing to generate a magnitude result of the second sub-operation within the plurality of second sub-operations.

    POLAR BIT ALLOCATION FOR PARTIAL CONTENT EXTRACTION
    5.
    发明申请
    POLAR BIT ALLOCATION FOR PARTIAL CONTENT EXTRACTION 审中-公开

    公开(公告)号：US20190104502A1

    公开(公告)日：2019-04-04

    申请号：US16149914

    申请日：2018-10-02

    Applicant: MEDIATEK INC.

    Inventor： Wei-De Wu ,  Chia-Wei Tai ,  Yen-Cheng Liu

    IPC: H04W72/00 ,  H04L1/00

    Abstract: Aspects of the disclosure provide a method and device performing input bit allocation that includes receiving broadcasting information bits, generating timing related bits for the broadcasting information bits, and selecting a portion of the generated timing related bits. The method and device can further include allocating each of the selected timing related bits to selected input bits of an encoder, so that each of the selected timing related bits is allocated to an input bit of the encoder corresponding to an available bit channel of the encoder where the selected inputs bits of the encoder correspond to encoded bits that are located in a front portion of the encoded bits.

    HARQ Buffer Size Design For Communication Systems
    6.
    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.

    Bit Selection For Polar Coding Incremental-Redundancy HARQ
    10.
    发明申请
    Bit Selection For Polar Coding Incremental-Redundancy HARQ 有权

    公开(公告)号：US20220014211A1

    公开(公告)日：2022-01-13

    申请号：US17343618

    申请日：2021-06-09

    Applicant: MediaTek Inc.

    Inventor： Tun-Ping Huang ,  Mao-Ching Chiu ,  Wei-De Wu ,  Chia-Wei Tai ,  Tien-Yu Lin

    IPC: H03M13/09 ,  H03M13/13 ,  H04L1/18 ,  H04L1/00

    Abstract: Examples pertaining to bit selection for polar coding incremental-redundancy hybrid automatic repeat request (IR-HARQ) are described. An apparatus (e.g., UE) generates a re-transmission polar code block (CB) in a polar incremental redundancy HARQ (IR-HARQ) procedure. The apparatus then transmits the re-transmission polar CB as a re-transmission of an initial transmission of an initial polar code carrying a plurality of information bits. In generating the re-transmission polar CB, the apparatus selects one or more re-transmission information bits from the plurality of information bits.

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