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    Efficient control channel design using polar codes
    114.
    发明授权
    Efficient control channel design using polar codes 有权

    公开(公告)号：US11777526B2

    公开(公告)日：2023-10-03

    申请号：US17332847

    申请日：2021-05-27

    Applicant: QUALCOMM Incorporated

    Inventor： Changlong Xu ,  Chao Wei ,  Jilei Hou

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

    CPC classification number: H03M13/13 ,  H03M13/09

    Abstract: Aspects of the disclosure relate to wireless communication systems configured to provide techniques for multiplexing dedicated control information for a plurality of users in a single information block and polar coding the information block to produce a polar code block of dedicated control information for transmission over a wireless air interface. The information block may further include group cyclic redundancy check (CRC) information for the information block and individual CRC information for each dedicated control information.

    Methods and apparatus for CRC concatenated polar encoding
    115.
    发明授权
    Methods and apparatus for CRC concatenated polar encoding 有权

    公开(公告)号：US11770134B2

    公开(公告)日：2023-09-26

    申请号：US17512289

    申请日：2021-10-27

    Applicant: QUALCOMM Incorporated

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

    IPC: H03M13/09 ,  H03M13/15 ,  H03M13/00 ,  H04L1/00

    CPC classification number: H03M13/09 ,  H03M13/155 ,  H03M13/617 ,  H04L1/0061 ,  H04L1/0065

    Abstract: Certain aspects of the present disclosure generally relate to techniques for encoding and decoding bits of information using cyclic redundancy check (CRC) concatenated polar encoding and decoding. A method generally includes obtaining the bits of information to be transmitted. The method includes performing CRC outer encoding of the bits of information using an even-weighted generator polynomial to produce CRC encoded bits. The method includes performing polar inner encoding of the CRC encoded bits to generate a codeword. The method includes discarding a first code bit at a beginning of the codeword. The shortened codeword is transmitted over a wireless medium. In another method, bit-level scrambling is performed on the CRC encoded bits before the polar encoding to. In another method, only odd-weighted generator polynomials are selected.

    DYNAMIC TERMINATION OF HYBRID AUTOMATIC REPEAT REQUEST RETRANSMISSIONS
    118.
    发明公开
    DYNAMIC TERMINATION OF HYBRID AUTOMATIC REPEAT REQUEST RETRANSMISSIONS 审中-公开

    公开(公告)号：US20230261800A1

    公开(公告)日：2023-08-17

    申请号：US18308495

    申请日：2023-04-27

    Applicant: QUALCOMM Incorporated

    Inventor： Changlong Xu ,  Hao Xu ,  Jing Jiang

    IPC: H04L1/1812 ,  H04L1/1825 ,  H04L1/1867 ,  H04L1/1829 ,  H04L1/1803

    CPC classification number: H04L1/1812 ,  H04L1/1825 ,  H04L1/188 ,  H04L1/1896 ,  H04L1/1848 ,  H04L1/1803 ,  H04W76/27

    Abstract: Methods, systems, and devices for wireless communications are described. Some wireless communications systems may support hybrid automatic repeat request (HARQ) schemes to improve the likelihood that information is received correctly over a wireless communications link. In HARQ, when a transmitting device determines that a receiving device failed to successfully decode a transmission of information, the transmitting device may retransmit the information to the receiving device. In some cases, HARQ techniques may be used for communications associated with different types of services. In such cases, to keep the latency of communications within a latency budget for a particular type of service, wireless devices may utilize the techniques described herein to dynamically terminate HARQ retransmissions. For instance, a transmitting device may avoid retransmitting information when an amount of time that has elapsed since an original transmission of the information has exceeded the latency budget.

    Reduced overhead error detection code design for decoding a codeword
    120.
    发明授权
    Reduced overhead error detection code design for decoding a codeword 有权

    公开(公告)号：US11695505B2

    公开(公告)日：2023-07-04

    申请号：US17500347

    申请日：2021-10-13

    Applicant: Qualcomm Incorporated

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

    IPC: H04L1/00 ,  H04L1/1812

    CPC classification number: H04L1/0052 ,  H04L1/0041 ,  H04L1/0061 ,  H04L1/1812

    Abstract: Methods, systems, and devices for wireless communications are described. An encoder of a wireless device may receive a transport block (TB) for transmission and segment the transport block into a set of multiple, smaller data segments that respectively correspond to a plurality of code blocks of the TB. The encoder may generate a code block level (CB-level) error detection code (EDC) for a subset of the data segments. The encoder may generate a transport block-level (TB-level) EDC for the TB using the data segments. Each of the code blocks (CBs) may be of the same size and may include one of the data segments. A subset of the CBs may include a data segment from the subset of the data segments and one of the CB-level EDCs. The remaining CBs that are not part of the subset may include a remaining data segments and the TB-level EDC.

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