知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

121 records (took 0.031 seconds)

    Method and device for incremental redundancy hybrid automatic repeat request (IR-HARQ) re-transmission
    32.
    发明授权
    Method and device for incremental redundancy hybrid automatic repeat request (IR-HARQ) re-transmission 有权

    公开(公告)号：US11184119B2

    公开(公告)日：2021-11-23

    申请号：US17001222

    申请日：2020-08-24

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Gongzheng Zhang ,  Huazi Zhang ,  Rong Li ,  Jun Wang ,  Yiqun Ge ,  Wen Tong

    IPC: H04L1/00 ,  H04L1/18 ,  H04B1/02

    Abstract: Aspects of this disclosure provide a technique for implementing polar encoding with incremental redundancy HARQ re-transmission. In particular, a transmitter encodes a message using different polar codes to obtain a first codeword and a second codeword that is twice the length of the first codeword, and transmit the first codeword as an original transmission, and the second half of the second codeword as a re-transmission without transmitting the first half of the second codeword. Information bits that are common to both the first codeword and the second half of the second codeword is mapped to more-reliable bit-locations in the second half of the second codeword. Decoded bit values for the common information in the original transmission and retransmission is compared by the receiver to perform a parity check.

    Channel coding method and apparatus in communication system
    33.
    发明授权
    Channel coding method and apparatus in communication system 有权

    公开(公告)号：US11057054B2

    公开(公告)日：2021-07-06

    申请号：US16798403

    申请日：2020-02-23

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Huazi Zhang ,  Rong Li ,  Yue Zhou ,  Hejia Luo ,  Gongzheng Zhang ,  Yunfei Qiao

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

    Abstract: Embodiments of this application provide a method for transmitting encoded information. A communication device obtains K bits of information, and generates a to-be-encoded sequence u1N, wherein N is a length of the sequence. The device encodes the sequence u1N in an encoding process, to obtain an output sequence, and transmits the output sequence. In the sequence u1N, each of the N bits corresponds to a subchannel, and each subchannel has a reliability. The K information bits, a quantity J of first-type auxiliary bits, and a quantity J′ of second-type auxiliary bits are placed in K′=K+J+J′ bit positions of the sequence u1N according to reliabilities of the subchannels. Since the positions of the information bits and the auxiliary bits are pre-determined and not affected by subsequent encoding and rate-matching, overheads of real-time reliability calculation are effectively reduced, time is saved, and delay is reduced.

    Channel encoding method and communication device
    35.
    发明授权
    Channel encoding method and communication device 有权

    公开(公告)号：US10966118B2

    公开(公告)日：2021-03-30

    申请号：US16352796

    申请日：2019-03-13

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Rong Li ,  Yunfei Qiao ,  Huazi Zhang

    IPC: H04W28/06 ,  H03M13/13 ,  H04L1/00 ,  H03M13/09 ,  H04L29/06 ,  H04W72/04

    Abstract: Embodiments of this application provide a channel encoding method for use by a communication device. The communication device obtains a quantity K of information bits, and determines a load size of a channel for transmitting the K information bits. The load size of the channel is N bits, where N≥K, N=2n, and n is a positive integer. The communication device performs a polar encoding process on the K information bits, to obtain a polar code sequence that includes N bits. The N-bit polar code sequence is transmitted using the channel, without rate matching. Because a quantity of coded bits obtained after the polar encoding is equal to a load size of a channel, no rate matching process is required. This reduces encoding overheads of a channel. Complexity and latency of channel encoding are greatly reduced, and performance loss associated with the rate matching operation is avoided.

    Polar code rate matching method and apparatus, and a communications apparatus
    36.
    发明授权
    Polar code rate matching method and apparatus, and a communications apparatus 有权

    公开(公告)号：US10938422B2

    公开(公告)日：2021-03-02

    申请号：US16579334

    申请日：2019-09-23

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Ying Chen ,  Hejia Luo ,  Huazi Zhang ,  Gongzheng Zhang ,  Rong Li ,  Yue Zhou

    IPC: H03M13/00 ,  H03M13/13

    Abstract: Embodiments of this application provide a polar code rate matching method and apparatus, and a communications apparatus. The rate matching method includes: determining N to-be-encoded bits, where the N to-be-encoded bits include N1 information bits, and both N1 and N are positive integers; encoding the N to-be-encoded bits to obtain N encoded bits; obtaining a first puncturing sequence based on an information bit length N1, the quantity N of the encoded bits, and a quantity Q of to-be-punctured bits; and performing a puncturing operation on the N encoded bits based on the first puncturing sequence to implement a rate matching. To-be-punctured bits indicated in the first puncturing sequence are obtained based on the information bit length N1, the quantity N of the encoded bits, and the quantity Q of the to-be-punctured bits, and are not generated randomly.

    Method and device for parallel polar code encoding/decoding
    39.
    发明授权
    Method and device for parallel polar code encoding/decoding 有权

    公开(公告)号：US10484130B2

    公开(公告)日：2019-11-19

    申请号：US15717745

    申请日：2017-09-27

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Huazi Zhang ,  Gongzheng Zhang ,  Rong Li ,  Jun Wang ,  Wen Tong ,  Yiqun Ge

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

    Abstract: Embodiments of this disclosure enhance the error detection performance of parallel polar encoding by cross-concatenating parity bits between segments of information bits transmitted over different sets of sub-channels. In one embodiment, a first segment of information bits is transmitted over a first set of sub-channels, and at least a second segment of information bits, and a masked parity bit, are transmitted over a second set of sub-channels. A value of the masked parity bit is equal to a bitwise combination of a first parity bit computed from the first segment of information bits and a second parity bit computed from the second segment of information bits. The bitwise combination may be a bitwise AND, a bitwise OR, or a bitwise XOR of the respective parity bits.

    Method for polar coding in communication network
    40.
    发明授权
    Method for polar coding in communication network 有权

    公开(公告)号：US10447432B2

    公开(公告)日：2019-10-15

    申请号：US16354194

    申请日：2019-03-15

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Shengchen Dai ,  Huazi Zhang ,  Rong Li ,  Yunfei Qiao ,  Yue Zhou

    IPC: H04L1/00 ,  H03M13/00

    Abstract: Embodiments of this application provide a method for processing information bits in a wireless communication network. A communication device obtains K information bits and a code length M. The code length M is a length of an output sequence resulting from processing the information bits. The communication device generates an N-bit bit sequence that includes the K information bits and one or more parity check bits, encodes the bit sequence using a polar encoding formula to obtain an N-bit encoded sequence, rate matches the encoded sequence to obtain the output sequence, and outputs the output sequence. When M−K>192, in the bit sequence, one of the parity check bits is placed in a bit position that is determined according to reliabilities of the bit positions in the bit sequence for placing the K information bits and the one or more parity check bits.

Patent Agency Ranking