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公开(公告)号：US11184116B2
公开(公告)日：2021-11-23
申请号：US16758549
申请日：2018-10-02
Applicant: QUALCOMM Incorporated
Inventor： Jian Li , Changlong Xu , Kai Chen , Liangming Wu , Jing Jiang , Hao Xu
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may perform a first transmission of a communication that is encoded using a polar coding technique; and perform at least one retransmission of the communication, wherein more resources are allocated for the at least one retransmission than for the first transmission, and wherein the at least one retransmission includes an incremental redundancy version of the communication and a version of the communication for Chase combination. Numerous other aspects are provided.
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公开(公告)号：US11159295B2
公开(公告)日：2021-10-26
申请号：US16645815
申请日：2018-08-27
Applicant: Qualcomm Incorporated
Inventor： Changlong Xu , Liangming Wu , Kai Chen , Chao Wei , Hao Xu
Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a base station may implement polar coding to generate codewords for transmission, for example, in a physical broadcast channel (PBCH). The base station may identify a subset of the bandwidth allocated for PBCH transmission (e.g., corresponding to a bandwidth for a synchronization signal), and may assign sub-channels to information bits based on the identified bandwidth subset. The base station may generate a codeword based on the assigned sub-channels, and may map a subset of encoded bits for the codeword to the subset of the bandwidth such that the subset of encoded bits includes bits corresponding to the assigned subchannels for the information bits. A user equipment (UE) may receive the encoded bits in the subset of the bandwidth, and may decode the subset of encoded bits to determine the information bits.
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公开(公告)号：US11057055B2
公开(公告)日：2021-07-06
申请号：US16476053
申请日：2018-01-08
Applicant: QUALCOMM Incorporated
Inventor： Liangming Wu , Changlong Xu , Jing Jiang , Chao Wei , Jilei Hou
Abstract: Wireless communication devices are adapted to employ Golay-based matrices for encoding a wireless transmissions. According to at least one example, a wireless communication device can identify an information vector to be transmitted as a wireless communication. A Golay-based generator matrix may be selected based on a length of the information vector, where the selected Golay-based generator matrix is generated by shortening a Golay generator matrix by removing a plurality of columns of systematic bits and a plurality of rows to obtain the shortened generator matrix, and extending the shortened generator matrix to obtain an extended generator matrix by adding columns to at least the systematic bits and appending rows to obtain a desired matrix size. A respective bit value may be determined for bits in each added column and for at least some of the bits in each appended row. Other aspects, embodiments, and features are also included.
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Patent Agency Ranking
公开(公告)号：US10862625B2
公开(公告)日：2020-12-08
申请号：US16476890
申请日：2018-02-17
Applicant: Qualcomm Incorporated
Inventor： Yang Yang , Jing Jiang , Changlong Xu , Gabi Sarkis , Chao Wei , Hari Sankar , Jian Li , Joseph Binamira Soriaga
Abstract: Techniques are described for wireless communication. One method includes identifying a set of punctured bit locations in a received codeword. The received codeword is encoded using a polar code. The method also includes identifying a set of information bit locations of the polar code, with the set of information bit locations being determined based at least in part on polarization weights per polarized bit-channel of a polar code decoder that are a function of nulled repetition operations per polarization stage of the polar code identified based at least in part on the set of punctured bit locations. The method further includes processing the received codeword using the polar code decoder to obtain an information bit vector at the set of information bit locations.
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公开(公告)号：US20200099393A1
公开(公告)日：2020-03-26
申请号：US16494621
申请日：2018-01-11
Applicant: Changlong XU , Jian LI , Liangming WU , Joseph Binamira SORIAGA , Jilei HOU , Qualcomm Incorporated
Inventor： Changlong Xu , Jian Li , Liangming Wu , Joseph Binamira Soriaga , Jilei Hou
Abstract: Methods, systems, and devices for wireless communication are described. A transmitter may generate a first segmentation based on a first subset of control information and a second segmentation based on jointly encoding the first subset and a second subset of the control information. The transmitter may polar encode the first segmentation to generate a first codeword and the second segmentation to generate a second codeword, and transmit the first and second codewords. A receiver may determine a first bit sequence corresponding to the first subset based on decoding a first codeword and determine an error detection code (EDC) and a second bit sequence corresponding to the second subset based on decoding a second codeword. The receiver may perform error detection on the first and second bit sequences based on the determined EDC, and output the first bit sequence and the second bit sequence or a decoding error.
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公开(公告)号：US20200036477A1
公开(公告)日：2020-01-30
申请号：US16493364
申请日：2018-04-18
Applicant: Changlong XU , Jian LI , Chao WEI , Jing JIANG , Jilei HOU , Qualcomm Incorporated
Inventor： Changlong Xu , Jian Li , Chao Wei , Jing Jiang , Jilei Hou
Abstract: Methods, systems, and devices for wireless communication are described for dynamic frozen bits of polar codes for early termination and performance improvement. A wireless device may receive a signal comprising a codeword encoded using a polar code. The wireless device may perform decoding of the codeword including at least: parity check of a first subset of decoding paths for making a decision on early termination of decoding of the codeword based on dynamic frozen bits, and generating path metrics for a second subset of the decoding paths that each pass the parity check based on the dynamic frozen bits, and performing error detection on a bit sequence corresponding to one of the second subset of the decoding paths based at part on error detection bits and the generated path metrics. The wireless device may process the information bits based on a result of the decoding.
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公开(公告)号：US10404413B2
公开(公告)日：2019-09-03
申请号：US15942261
申请日：2018-03-30
Applicant: QUALCOMM Incorporated
Inventor： Jian Li , Changlong Xu , Chao Wei , Jilei Hou
Abstract: 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：US20180294922A1
公开(公告)日：2018-10-11
申请号：US15942261
申请日：2018-03-30
Applicant: QUALCOMM Incorporated
Inventor： Jian Li , Changlong Xu , Chao Wei , Jilei Hou
CPC classification number: H04L1/0071 , H03M13/13 , H03M13/2707 , H03M13/2742 , H03M13/2757 , H03M13/296 , H04L1/0057 , H04L1/0058 , H04L1/0061
Abstract: 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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