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公开(公告)号：US20220200634A1
公开(公告)日：2022-06-23
申请号：US17567587
申请日：2022-01-03
发明人： Changlong XU , Jian LI , Chao WEI , Jilei HOU
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：US20210288668A1
公开(公告)日：2021-09-16
申请号：US17332847
申请日：2021-05-27
发明人： Changlong XU , Chao WEI , Jilei HOU
摘要： 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.
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公开(公告)号：US20200044704A1
公开(公告)日：2020-02-06
申请号：US16599018
申请日：2019-10-10
发明人： Yu Zhang , Chao WEI , Peng CHENG , Neng WANG , Jilei HOU
IPC分类号： H04B7/0456 , H04L1/00 , H04W16/10 , H04B7/0426 , H04L1/06 , H04L1/18 , H04B7/06 , H04B7/0452 , H04W16/28
摘要： Certain aspects of the present disclosure provide methods and apparatus for linear precoding in full-dimensional MIMO (FD-MIMO) systems. According to aspects, an eNB may compress a larger number of antenna elements to a smaller number of antenna ports. The eNB may use a port precoding matrix to transmit reference signals to a UE, receive feedback regarding CSI based on the reference signals, and transmit data to the UE, based on a mapping of multiple data layers and mapping of antenna ports to the physical antenna elements. Further, aspects include performing elevation beamforming by dynamically forming one or more vertical sectors based on UE feedback in the elevation domain.
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4.发明申请公开(公告)号：US20190280829A1
公开(公告)日：2019-09-12
申请号：US16345621
申请日：2017-01-06
发明人： Chao WEI , Jing JIANG , Changlong XU , Jilei HOU
摘要： The present disclosure describes various examples of a method, an apparatus, and a computer-readable medium for wireless communications (e.g., 5G NR) using hybrid automatic repeat request (HARQ). For example, one of the methods includes generating a first codeword based on a first code block length, transmitting a first signal using the first codeword, generating a second codeword with incremental redundancy information based on a second code block length, generating a third codeword with repetition of at least a portion of the first codeword based on a third code block length, and transmitting a second signal using at least the second codeword or the third codeword.
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公开(公告)号：US20190123860A1
公开(公告)日：2019-04-25
申请号：US16091081
申请日：2017-03-03
发明人： Changlong XU , Jian LI , Chao WEI , Neng WANG , Jilei HOU
摘要： The present disclosure describes a method, an apparatus, and a computer readable medium for hybrid automatic repeat request (HARQ) transmissions. For example, the method may include generating a first codeword for a first information block, wherein the first codeword is a first polar code, and wherein the first information block includes cyclic redundancy check (CRC) bits; transmitting the first codeword to a receiver; determining that the first polar code is not successfully decoded at the receiver based at least on a first message received from the receiver; generating a second codeword for a second information block, wherein the second codeword is a first enhanced polar code, and wherein the second information block does not include any CRC bits; transmitting the second codeword to the receiver; and determining that the second codeword and the first codeword are successfully decoded at the receiver based at least on a second message received from the receiver.
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公开(公告)号：US20180034593A1
公开(公告)日：2018-02-01
申请号：US15643003
申请日：2017-07-06
发明人： Changlong XU , Jian LI , Chao WEI , Jilei HOU
CPC分类号： H04L1/08 , H04L1/0011 , H04L1/0058 , H04L1/0061 , H04L1/0079 , H04L1/1671 , H04L1/1812 , H04L1/1896 , H04L1/203
摘要： Certain aspects of the present disclosure relate to techniques and apparatus for design of hybrid automatic repeat request (HARQ) feedback bits. The method generally includes obtaining a payload to be transmitted, partitioning the payload into a plurality of blocks, and partitioning each block of the plurality of blocks into a plurality of sections. The method also includes deriving redundancy check information for each section of the plurality of sections, and generating a plurality of codewords, each comprising a block of the plurality of blocks and the redundancy check information for each section of the block, wherein a location of each of the sections in the codewords is determined based on an error rate corresponding to each of the sections.
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公开(公告)号：US20210359706A1
公开(公告)日：2021-11-18
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： H03M13/13 , H04B17/336 , H03M13/35 , H04L1/00 , H04L1/18
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：US20210266100A1
公开(公告)日：2021-08-26
申请号：US17319283
申请日：2021-05-13
发明人： Hari SANKAR , Gabi SARKIS , Changlong XU , Alexei GOROKHOV , Jing JIANG , Joseph Binamira SORIAGA , Jilei HOU
摘要： The disclosure relates in some aspects to information encoding. Information encoding may involve puncturing bits of a codeword or repeating bits of a codeword. The disclosure relates in some aspects to selecting a puncturing or repetition pattern. In some aspects, a puncture pattern for data encoding is selected based on a criterion that the output and the repetition input of an XOR are not erased. In some aspects, a repetition pattern for data encoding is selected based on a criterion that repetition not be applied for the output and the repetition input of an XOR.
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公开(公告)号：US20200187166A1
公开(公告)日：2020-06-11
申请号：US16336303
申请日：2017-07-11
申请人： Changlong XU , Jian LI , Chao WEI , Chong LI , Tingfang JI , Jilei HOU , QUALCOMM Incorporated
发明人： Changlong XU , Jian LI , Chao WEI , Chong LI , Tingfang JI , Jilei HOU
摘要： Various aspects of the disclosure relate to mapping different information to different sub-channels. For example, information for different users may be mapped to different Polar code sub-channels. In some aspects, the mapping may be unbalanced in that different information is mapped to different sub-channels according to the quality (e.g., in terms of error probability) of the sub-channels and a criterion associated with the information. For example, control information for users that are experiencing the worst channel quality (e.g., in a wireless communication channel) may be mapped to the Polar code sub-channels that have the best quality.
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公开(公告)号：US20190296776A1
公开(公告)日：2019-09-26
申请号：US16317395
申请日：2017-06-12
申请人： Changlong XU , Jian LI , Chao WEI , Jilei HOU , QUALCOMM Incorporated
发明人： Changlong XU , Jian LI , Chao WEI , Jilei HOU
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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