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公开(公告)号：US12074706B2
公开(公告)日：2024-08-27
申请号：US17310189
申请日：2019-01-23
发明人： Kai Chen , Changlong Xu , Liangming Wu , Jian Li , Jing Jiang , Hao Xu
IPC分类号： H04L1/08
CPC分类号： H04L1/08
摘要： Wireless communications systems and methods related to hybrid repeat request (HARQ) with rate splitting are provided. A first wireless communication device communicates, with a second wireless communication device, a first communication signal including a plurality of information bits. The first wireless communication device determines a number of bits in the plurality of information bits to be repeated in a second communication signal based on channel capacity information. The first wireless communication device communicates, with the second wireless communication device, the second communication signal including the plurality of information bits and a repetition of a subset of the plurality of information bits, where the subset of the plurality of information bits includes the determined number of bits.
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公开(公告)号：US11996940B2
公开(公告)日：2024-05-28
申请号：US18074039
申请日：2022-12-02
发明人： Jian Li , Changlong Xu , Chao Wei , Jilei Hou
CPC分类号： H04L1/0071 , H03M13/13 , H03M13/2707 , H03M13/2742 , H03M13/2757 , H03M13/296 , H04L1/0057 , H04L1/0058 , H04L1/0061
摘要： Aspects of the disclosure relate to wireless communication devices configured to encode information blocks to produce code blocks and interleave the code blocks utilizing an interleaver including a plurality of rows and a plurality of columns, where the number of columns of the interleaver varies between the rows. In some examples, the interleaver includes a right isosceles triangle-shaped matrix of rows and columns. In other examples, the interleaver includes a trapezoid-shaped matrix of rows and columns.
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公开(公告)号：US11973518B2
公开(公告)日：2024-04-30
申请号：US17567587
申请日：2022-01-03
发明人： Changlong Xu , Jian Li , Chao Wei , Jilei Hou
CPC分类号： H03M13/6356 , H03M13/13 , H03M13/6362 , H03M13/2906 , H03M13/635 , H04L1/0013 , H04L1/0057 , H04L1/0067 , H04L1/08
摘要： Various aspects of the disclosure relate to rate matching techniques for block encoding. In some aspects, a decision regarding whether to use repetition-based rate matching or puncture-based rate matching is made based on a block size of information being encoded. In some aspects, repetition-based rate matching uses a bit-reversal permutation technique.
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公开(公告)号：US11791936B2
公开(公告)日：2023-10-17
申请号：US17866168
申请日：2022-07-15
发明人： Kai Chen , Changlong Xu , Liangming Wu , Jian Li , Hao Xu
IPC分类号： H04L1/00 , H03M13/13 , H03M13/00 , H04L1/1812 , H04L1/1829
CPC分类号： H04L1/0068 , H03M13/13 , H03M13/6306 , H03M13/6362 , H04L1/1819 , H04L1/1854
摘要： Wireless devices may use polar codes for encoding transmissions and may support combining transmissions to improve decoding reliability (e.g., by achieving chase combining and incremental redundancy (IR) gains). For example, an encoding device may puncture a set of mother code bits using different puncturing patterns to obtain different redundancy versions for a first transmission and a re-transmission. Each puncturing pattern may correspond to an equivalent decoding performance. In some cases, to obtain equivalent puncture sets, the encoding device may perform punctured index manipulation procedures on an initial puncturing pattern. A punctured index manipulation procedure may involve switching a binary state for a binary bit at a same binary bit index for each puncture index in a puncturing pattern. A device may receive the transmissions generated using the equivalent puncture sets and may combine the information for improved decoding reliability.
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公开(公告)号：US11791843B2
公开(公告)日：2023-10-17
申请号：US17443992
申请日：2021-07-29
发明人： Changlong Xu , Jian Li , Jilei Hou , Chao Wei
IPC分类号： H03M13/00 , H03M13/13 , H04B17/336 , H03M13/35 , H04L1/00 , H04L1/1812
CPC分类号： H03M13/13 , H03M13/353 , H04B17/336 , H04L1/0003 , H04L1/0013 , H04L1/1812
摘要： Methods and apparatus for constructing polar codes are provided. A transmitter determines at least one set of parameters corresponding to data to be transmitted, and a set of sorting indices corresponding to bits of the data to be transmitted based on the set of parameters, the set of sorting indices indicating a position set of the bits to be transmitted. The transmitter polar encodes the data based at least on the set of parameters and the set of sorting indices to generate a coded block of the data, and transmits the coded block of the data.
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公开(公告)号：US11777645B2
公开(公告)日：2023-10-03
申请号：US16967106
申请日：2019-02-07
发明人： Changlong Xu , Liangming Wu , Kai Chen , Jian Li , Hao Xu , Tingfang Ji , Joseph Binamira Soriaga , Jing Jiang
IPC分类号： H04L1/00 , H04L1/08 , H04L1/1812
CPC分类号： H04L1/0057 , H04L1/0026 , H04L1/0041 , H04L1/0072 , H04L1/08 , H04L1/1812
摘要： Techniques are provided for retransmission of Physical Uplink Shared Channel (PUCCH) for Ultra Reliable Low Latency Communications (URLLC). A User Equipment (UE) transmits at least one code block of a control channel, the at least one code block including Channel State Information (CSI), wherein each code block is polar encoded by assigning bit indices of the code block to bit channels in a particular order of reliabilities of the bit channels. The UE detects a trigger, and in response, retransmits at least a portion of each code block including retransmitted CSI, wherein the portion is polar encoded by assigning bit indices of the retransmitted CSI to the bit channels in the reverse order of reliabilities of the bit channels as compared to the polar encoding of the CSI.
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公开(公告)号：US20230261722A1
公开(公告)日：2023-08-17
申请号：US18003099
申请日：2020-08-19
发明人： Wei Xi , Yu Zhang , Hao Xu , Min Huang , Chao Wei , Changlong Xu , Liangming Wu , Chenxi Hao , Qiaoyu Li , Kangqi Liu , Jing Dai , Rui Hu , Jian Li
CPC分类号： H04B7/06956 , H04B7/086 , H01Q3/26
摘要： Methods, systems, and devices for wireless communications are described. In some systems, a device may select antenna elements from a planar array to transmit or receive an orbital angular momentum (OAM) beam. The device may determine a first area (e.g., a first ring area) based on an angular direction over which the device can communicate an OAM beam with a second device and may determine a second area (e.g., a second ring area) on the planar array based on projecting the first area on the planar array. The device may select a set of antenna elements from the planar array that are located within the second area. The device may determine a complex-valued weight for each antenna element of the selected set of antenna elements and may transmit or receive an OAM beam to or from the second device via the set of antenna elements according to the angular direction.
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公开(公告)号：US20230171032A1
公开(公告)日：2023-06-01
申请号：US17995394
申请日：2020-04-03
发明人： Kangqi Liu , Changlong Xu , Jian Li , Liangming Wu , Yu Zhang , Hao Xu
CPC分类号： H04L1/08 , H04L5/0053
摘要： Network coding in automatic receipt request (ARQ) functionality is disclosed. A compatible transmitter configures a new transmission period, in which the set of data for transmission is transmitted, and a retransmission period, after the new transmission period, in which a number of network coded data is retransmitted based on the acknowledgement feedback received from the receivers receiving the transmitted set of data. The acknowledgement feedback identifies one or more data requested for retransmission by one or more of the receivers. The transmitter determines a number of network coded data that could be transmitted to accommodate each of the requesting receivers and the data requested by such receivers for retransmission. These network coded data would then be retransmitted by the transmitter during the retransmission period.
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公开(公告)号：US11558149B2
公开(公告)日：2023-01-17
申请号：US16544788
申请日：2019-08-19
发明人： Jian Li , Changlong Xu , Chao Wei , Jilei Hou
摘要： Aspects of the disclosure relate to wireless communication devices configured to encode information blocks to produce code blocks and interleave the code blocks utilizing an interleaver including a plurality of rows and a plurality of columns, where the number of columns of the interleaver varies between the rows. In some examples, the interleaver includes a right isosceles triangle-shaped matrix of rows and columns. In other examples, the interleaver includes a trapezoid-shaped matrix of rows and columns.
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公开(公告)号：US11451245B2
公开(公告)日：2022-09-20
申请号：US16628209
申请日：2017-08-04
发明人： Jian Li , Changlong Xu , Jing Jiang , Hao Xu , Jilei Hou
摘要： Aspects of the disclosure relate to wireless communication devices configured to encode information blocks to produce code blocks and interleave the code blocks utilizing an interleaver including a plurality of rows and a plurality of columns. In some examples, the interleaver includes a right isosceles triangle-shaped matrix of rows and columns. In other examples, the interleaver includes a rectangle-shaped matrix of rows and columns.
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