-
公开(公告)号：US20200177206A1
公开(公告)日：2020-06-04
申请号：US16787045
申请日：2020-02-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ying Chen , Gongzheng Zhang , Hejia Luo , Yunfei Qiao , Rong Li
Abstract: An interleaving method and apparatus are provided, to reduce complexity of implementation processes of polar code interleaving and rate matching. The method includes: obtaining encoded bits after polar code encoding, and sorting the encoded bits based on a priority order of performing a rate matching operation, to obtain a first bit sequence. The first bit sequence includes j subsequences, and j is a positive integer. The method further includes writing the first bit sequence into an interleaver of i rows and j columns. Bits in a column in the interleaver include one of the j subsequences; and reading out bits from the interleaver column by column, until M bits are read. At least two adjacent columns have opposite readout directions, and M is a target code length.
-
公开(公告)号：US10673654B2
公开(公告)日：2020-06-02
申请号：US16523954
申请日：2019-07-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ying Chen , Gongzheng Zhang , Huazi Zhang , Hejia Luo , Rong Li , Jun Wang
Abstract: Embodiments can provide a coding method, a coding apparatus, and a communications apparatus. The method includes: determining N to-be-coded bits, where N is a positive integer; obtaining a first sequence that includes N polar channel sequence numbers; determining a location of an information bit in the N to-be-coded bits based on the first sequence; and performing polar coding on the N to-be-coded bits to obtain coded bits. The location of the information bit in the to-be-coded bits is determined based on the obtained first sequence that includes N polar channel sequence numbers, so that performance of a polar code can be improved.
-
公开(公告)号：US10659194B2
公开(公告)日：2020-05-19
申请号：US16145850
申请日：2018-09-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jun Wang , Gongzheng Zhang , Huazi Zhang , Chen Xu , Lingchen Huang , Shengchen Dai , Hejia Luo , Yunfei Qiao , Rong Li , Jian Wang , Ying Chen , Nikita Polianskii , Mikhail Kamenev , Zukang Shen , Yourui HuangFu , Yinggang Du
Abstract: This application relates to the field of wireless communications technologies, and discloses a polar code encoding method and apparatus, to improve accuracy of reliability calculation and ordering for polarized channels. The method includes: obtaining a first sequence used to encode K to-be-encoded bits, where the first sequence includes sequence numbers of N polarized channels, the sequence numbers of the N polarized channels are arranged in the first sequence based on reliability of the N polarized channels, K is a positive integer, N is a mother code length of a polar code, N is a positive integer power of 2, and K≤N; selecting sequence numbers of K polarized channels from the first sequence in descending order of reliability; and placing the to-be-encoded bits based on the selected sequence numbers of the K polarized channels, and performing polar code encoding on the to-be-encoded bits.
-
公开(公告)号：US20200092035A1
公开(公告)日：2020-03-19
申请号：US16693865
申请日：2019-11-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huazi Zhang , Jiajie Tong , Rong Li , Jun Wang , Wen Tong , Yigun Ge , Xiaocheng Liu
Abstract: Embodiment techniques map parity bits to sub-channels based on their row weights. In one example, an embodiment technique includes allocating, from a set of sub-channels, one or more sub-channels for one or more parity bits based on row weights for sub-channels in a subset of sub-channels within the set of sub-channels, mapping information bits to remaining sub-channels in the set of sub-channels based on a reliability of the remaining sub-channels without mapping any of the information bits to the one or more sub-channels allocated for the one or more parity bits, polar encoding the information bits and the one or more parity bits based on at least the mapping of the information bits to the remaining sub-channels to obtain encoded bits, and transmitting the encoded bits to another device.
-
公开(公告)号：US10574401B2
公开(公告)日：2020-02-25
申请号：US16298901
申请日：2019-03-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Rong Li , Guijie Wang , Gongzheng Zhang , Jian Wang , Jun Wang
Abstract: Embodiments of this application provide a polar code retransmission method and apparatus, to reduce retransmission complexity and improve transmission performance. The method includes: determining a first polar channel sequence including N polar channels and reliability of each of the N polar channels; determining, based on a coding parameter for an mth data transmission, a quantity Km of information bits that need to be transmitted during the mth data transmission, where the coding parameter includes at least one of the quantity of information bits and a code rate; determining Km polar channels with highest reliability in the first polar channel sequence; determining Km information bits based on locations, of information bits that need to be transmitted during first m−1 data transmissions, in the first polar channel sequence; and mapping the Km information bits to the Km polar channels for transmission.
-
Patent Agency Ranking
公开(公告)号：US10567994B2
公开(公告)日：2020-02-18
申请号：US16561027
申请日：2019-09-05
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Gongzheng Zhang , Yourui HuangFu , Lingchen Huang , Ying Chen , Yunfei Qiao , Rong Li
Abstract: Embodiments of the application provide a method for transmitting data in a wireless communication network. A device of the network receives a bit sequence of K information bits. The device polar codes the bit sequence to obtain a first encoded sequence, wherein a length of the first encoded sequence is N, and N is greater than or equal to K. The device block interleaves the first encoded sequence to obtain an interleaved bit sequence. The device determines a transmission code rate R. When the transmission code rate R is less than the code rate threshold, the device outputs a second bit sequence. The length of the second bit sequence is M, M is smaller than N. The second bit sequence is punctured from the interleaved bit sequence by removing (N−M) bits from beginning of the interleaved bit sequence.
-
公开(公告)号：US10560926B2
公开(公告)日：2020-02-11
申请号：US15860512
申请日：2018-01-02
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Hejia Luo , Rong Li , Guangzhu Zeng
Abstract: The present invention discloses an uplink data transmission method and device. The method includes: receiving, by a network device, a control symbol sent by a terminal device by using a control time-frequency resource, where the control symbol carries control information, the control information is used to indicate a data encoding scheme used by the terminal device, the control time-frequency resource belongs to a transmission resource including a data time-frequency resource, and the control time-frequency resource and the data time-frequency resource are different; performing demodulation and decoding processing on the control symbol to obtain the control information; and performing, according to the control information, decoding processing on a data symbol sent by the terminal device by using the data time-frequency resource, to obtain uplink data.
-
公开(公告)号：US10560175B2
公开(公告)日：2020-02-11
申请号：US16265837
申请日：2019-02-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H04B7/06
Abstract: This application provides a data transmission method and an apparatus. The method includes: obtaining, by user equipment, to-be-sent user data; performing, by the user equipment, channel encoding on the to-be-sent user data to obtain N sets of encoded data; performing, by the user equipment, codebook mapping on each of the N sets of encoded data by using a codebook, to obtain N sets of codebook-mapped data, where different sets of encoded data use codebooks that occupy mutually different non-zero physical REs, the non-zero physical RE means a non-zero waveform obtained after mapped data is mapped to a physical RE, and N is a positive integer greater than or equal to 2; and sending, by the user equipment, the N sets of codebook-mapped data to a base station.
-
公开(公告)号：US20200036474A1
公开(公告)日：2020-01-30
申请号：US16578481
申请日：2019-09-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Hejia LUO , Yourui HUANGFU , Ying CHEN , Shengchen DAI , Rong Li
IPC: H04L1/00
Abstract: Embodiments of this application disclose a resource mapping method and an apparatus. The method includes: network device performs nested-structure mapping on a modulated symbol set to obtain a first resource block, where the modulated symbol set carries downlink control information corresponding to each of at least one user equipment, and modulated symbols of same user equipment that are carried on the first resource block are consecutive; then reconstructs, the first resource block to obtain a second resource block, where modulated symbols of same user equipment that are carried on the second resource block are non-consecutive; and maps the second resource block to a time-frequency resource, so that the user equipment obtains the modulated symbol set based on the time-frequency resource.
-
公开(公告)号：US20200021395A1
公开(公告)日：2020-01-16
申请号：US16579287
申请日：2019-09-23
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Shengchen Dai , Lingchen Huang , Gongzheng Zhang , Yunfei Qiao , Rong Li
IPC: H04L1/00
Abstract: This application provides an encoding method and apparatus in wireless communications between a network device and a terminal. The method includes: performing CRC encoding on A to-be-encoded information bits based on a CRC polynomial, to obtain a first bit sequence, where the first bit sequence includes L CRC bits and A information bits, L=6; and performing polar encoding on the first bit sequence. Based on an improved CRC polynomial, encoding satisfying an FAR requirement is implemented.
-
-
-
-
-
-
-
-
-
Search Results
305
records
(took 0.031 seconds)
