-
公开(公告)号：US11539457B2
公开(公告)日：2022-12-27
申请号：US17174794
申请日：2021-02-12
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Gongzheng Zhang , Hejia Luo , Rong Li , Ying Chen , Yunfei Qiao
Abstract: Embodiments of the application provide a method for rate matching in a wireless communication network. A device obtains K information bits and a target code length M of a polar code, determines, according to a minimum value of a set of values, a mother code length N1, polar encodes the K information bits to obtain an encoded sequence of N1 bits, obtains a target sequence of M bits from the N1 bit encoded sequence, and outputs the M-bit target sequence. When the mother code length N1 is larger than the target code length M, (N1−M) bits of the encoded sequence are punctured or shortened from the N1 bit encoded sequence.
-
公开(公告)号：US20220376743A1
公开(公告)日：2022-11-24
申请号：US17882200
申请日：2022-08-05
Applicant: Huawei Technologies Co., Ltd.
Inventor： Ying Chen , Jianwei Zhou , Hejia Luo , Xiaolu Wang , Rong Li , Jun Wang
Abstract: This application discloses a frequency compensation method and apparatus, to improve performance of frequency compensation. The method includes: determining a change rate of a Doppler frequency shift value based on a weighted change rate of a change rate of a timing advance TA, determining the Doppler frequency shift value based on the change rate of the Doppler frequency shift value, and performing frequency compensation based on the determined Doppler frequency shift value; or determining a frequency offset value based on the Doppler frequency shift value with reference to pre-compensation and based on a reference signal, to further determine a frequency offset value, and performing frequency compensation based on the frequency offset value.
-
公开(公告)号：US11239945B2
公开(公告)日：2022-02-01
申请号：US16585467
申请日：2019-09-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Aleksei Eduardovich Maevskii , Vladimir Gritsenko , Jian Wang , Hejia Luo , Gongzheng Zhang , Jie Jin
Abstract: A polar code encoding/decoding method in a communications system is provided, including: determining an information bit location set or a frozen bit location set of a polar code based on an interleaving operation or a corresponding de-interleaving operation; and encoding or decoding the polar code based on the determined information bit location set or frozen bit location set.
-
公开(公告)号：US11223371B2
公开(公告)日：2022-01-11
申请号：US16798916
申请日：2020-02-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hejia Luo , Rong Li , Vladimir Vitalievich Gritsenko , Aleksei Eduardovich Maevskii , Jun Wang
Abstract: A polar code encoder is configured to: map q bits to q positions of q sub-channels, where q is a positive integer, and the q bits are used to indicate a version of encoded codeword; map K-q information bits to K-q positions for the K-q information bits, K is an integer, K>q; and perform polar encoding over an input vector u0N-1, comprising the q bits and the K-q information bits, with the length of N, N is an integer, N>=K and scramble with scrambling vector over the polar encoded bits, where the scrambling vector is associated to the q sub-channels or the scrambling vector is associated to a special frozen bit which is corresponding to the q sub-channels.
-
公开(公告)号：US11133894B2
公开(公告)日：2021-09-28
申请号：US16529514
申请日：2019-08-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huazi Zhang , Rong Li , Yunfei Qiao , Hejia Luo , Gongzheng Zhang , Ying Chen
Abstract: The present disclosure relates to information transmission method, decoding method, and apparatus. One example method includes encoding, by a sending device, a to-be-encoded sequence based on preset parameters to obtain an encoded sequence, where the preset parameters include a quantity of check bits, positions of the check bits, and a check equation, and sending the encoded sequence to a receiving device.
-
Patent Agency Ranking
公开(公告)号：US11076408B2
公开(公告)日：2021-07-27
申请号：US16579598
申请日：2019-09-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yourui Huangfu , Hejia Luo , Jian Wang , Huazi Zhang , Rong Li
Abstract: This application provides an information transmission method, a network device, and a terminal device. The method includes: generating, by a network device, downlink control information DCI; determining, by the network device, a corresponding processing manner based on a format of the DCI; performing, by the network device, processing in the processing manner in an encoding process of the DCI; and sending, by the network device, the processed DCI over a physical downlink control channel PDCCH. The information transmission method provided in this application can resolve a problem of a failure in blind detection on DCI caused by a nested encoding feature of polar encoding. When a terminal device cannot determine the format of the DCI sent by the network device, the network device may use a mapping relationship, and the network device processes DCI of a format in a processing manner.
-
公开(公告)号：US11057150B2
公开(公告)日：2021-07-06
申请号：US16544529
申请日：2019-08-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hejia Luo , Shengchen Dai , Ying Chen , Gongzheng Zhang , Rong Li , Chaolong Zhang
Abstract: This application discloses a transmission method, a transmission apparatus, and a communications device. The transmission method includes: performing polar encoding on a bit sequence, to obtain an encoded sequence, where the bit sequence includes control information and a cyclic redundancy check CRC sequence; fragmenting the encoded sequence, to obtain n encoded subsequences, where n is an integer, and n>0; and scrambling the n encoded subsequences by using n scrambling sequences respectively, to obtain n scrambled sequences. In the transmission method, the n scrambling sequences are newly defined based on encoding and decoding features of a polar code, and the n scrambling sequences additionally carry ┌log2n┐-bit information. According to the foregoing encoding method, signaling overheads are reduced.
-
公开(公告)号：US10972130B2
公开(公告)日：2021-04-06
申请号：US16521605
申请日：2019-07-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Chaolong Zhang , Lingchen Huang , Hejia Luo , Rong Li , Jun Wang
Abstract: An encoding method, an encoding apparatus, a decoding method, and a decoding apparatus are provided. The encoding method includes: determining a size of a shift matrix based on a length of an information sequence and a length of an identifier sequence; constructing a check matrix based on the size of the shift matrix and a base matrix; and performing low-density parity-check LDPC encoding on the information sequence and the identifier sequence based on the check matrix. The identifier sequence is a non-all-zero sequence. Because the encoded codeword includes information of the identifier sequence, a receive device can identify whether information corresponding to the encoded codeword is addressed to the receive device, thereby improving information processing efficiency in the transmission.
-
公开(公告)号：US10924210B2
公开(公告)日：2021-02-16
申请号：US16558285
申请日：2019-09-02
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ying Chen , Rong Li , Huazi Zhang , Hejia Luo , Gongzheng Zhang
Abstract: Embodiments provide a polar code encoding and decoding method in a communications system. Under the method, a basic quantized sequence can be obtained. The basic quantized sequence includes a quantized value used to represent reliability corresponding to a polarized subchannel. A target quantized sequence based on the basic quantized sequence can also be obtained. A relative magnitude relationship between elements in the target quantized sequence is nested with a relative magnitude relationship between elements in the basic quantized sequence. K largest quantized values in the target quantized sequence can be determined based on a non-fixed bit length K and polarized subchannels corresponding to the K largest quantized values can be used as a non-fixed bit position set. Polar code encoding or decoding can be performed based on the non-fixed bit position set.
-
公开(公告)号：US10892850B2
公开(公告)日：2021-01-12
申请号：US16265224
申请日：2019-02-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: A method and an apparatus for carrying identification information are disclosed, to extend a quantity of bit positions that can represent identification information. The method includes determining, by a base station, bit locations that can be used to carry identification information in to-be-coded bits, where the bit locations that can be used to carry the identification information include locations of fixed bits, the identification information is used to identify a terminal, and the fixed bits are used by the terminal to perform error correction in a decoding process, adding, by the base station, the identification information to the bit locations, and encoding, by the base station in a polar code encoding mode, the to-be-coded bits that carry the identification information, and sending an encoded polar code to the terminal.
-
-
-
-
-
-
-
-
-
Search Results
137
records
(took 0.035 seconds)
