公开(公告)号：US20200052819A1

公开(公告)日：2020-02-13

申请号：US16344395

申请日：2017-06-22

申请人： Changlong XU ,  Jian LI ,  Joseph Binamira SORIAGA ,  Jilei HOU ,  QUALCOMM Incorporated

发明人： Changlong XU ,  Jian LI ,  Joseph Binamira SORIAGA ,  Jilei HOU

IPC分类号： H04L1/00 ,  H04L1/20

摘要： Various aspects of the disclosure relate to retransmission techniques for communication of information (e.g., for wireless communication). In some aspects, if a device's first transmission including punctured encoded data fails, the device's second transmission (e.g., in response to a NAK) may involve transmitting the punctured bits. In some aspects, the coding rate used for encoding the data for the first transmission is selected to meet an error rate (e.g., a block error rate) for the second transmission. The second transmission may also include at least some of the encoded data. In some aspects, the puncturing may be performed according to a puncture pattern that is generated based on bit error probabilities of bit positions for encoded data.

公开(公告)号：US20200092041A1

公开(公告)日：2020-03-19

申请号：US16470881

申请日：2018-01-12

申请人： Hari SANKAR ,  Gabi SARKIS ,  Changlong XU ,  Alexei GOROKHOV ,  Jing JIANG ,  Joseph Binamira SORIAGA ,  Jilei HOU ,  QUALCOMM Incorporated

发明人： Hari SANKAR ,  Gabi SARKIS ,  Changlong XU ,  Alexei GOROKHOV ,  Jing JIANG ,  Joseph Binamira SORIAGA ,  Jilei HOU

IPC分类号： H04L1/00 ,  H04L5/00 ,  H03M13/00 ,  H03M13/13

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.

公开(公告)号：US20210152187A1

公开(公告)日：2021-05-20

申请号：US16628209

申请日：2017-08-04

申请人： Jian LI ,  Changlong XU ,  Jing JIANG ,  Hao XU ,  Jilei HOU ,  QUALCOMM Incorporated

发明人： Jian LI ,  Changlong XU ,  Jing JIANG ,  Hao XU ,  Jilei HOU

IPC分类号： H03M13/27 ,  H03M13/00 ,  H03M13/15 ,  H03M13/29

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.

公开(公告)号：US20190268022A1

公开(公告)日：2019-08-29

申请号：US16320038

申请日：2017-06-26

申请人： Changlong XU ,  Jian LI ,  Jilei HOU ,  Chao WEI ,  QUALCOMM INCORPORATED

发明人： Changlong XU ,  Jian LI ,  Jilei HOU ,  Chao WEI

IPC分类号： H03M13/13 ,  H03M13/35 ,  H04L1/00 ,  H04L1/18 ,  H04B17/336

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.

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

IPC分类号： H04W72/04 ,  H04L1/00

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.

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

IPC分类号： H03M13/00 ,  H03M13/13

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.

公开(公告)号：US20200076535A1

公开(公告)日：2020-03-05

申请号：US16468210

申请日：2017-06-14

申请人： Changlong XU ,  Joseph Binamira SORIAGA ,  Jileli HOU ,  QUALCOMM Incorporated

发明人： Changlong XU ,  Joseph Binamira SORIAGA ,  Jilei HOU

IPC分类号： H04L1/00 ,  H04L29/08 ,  H04L12/26

摘要： Aspects of the disclosure relate to wireless communication systems configured to provide techniques for polar coding control information together with combined cyclic redundancy check (CRC) information. The combined CRC information may include a number of CRC bits selected to jointly decode and verify the control information to reduce the CRC overhead.

公开(公告)号：US20200083987A1

公开(公告)日：2020-03-12

申请号：US16468622

申请日：2018-01-08

申请人： Changlong XU ,  Chao WEI ,  Jing JIANG ,  Gaojin WU ,  Hari SANKAR ,  Jilei HOU ,  QUALCOMM Incorporated

发明人： Changlong XU ,  Chao WEI ,  Jing JIANG ,  Gaojin WU ,  Hari SANKAR ,  Jilei HOU

IPC分类号： H04L1/00 ,  H03M13/13 ,  H03M13/00

摘要： Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for rate-matching control channels using polar codes. An exemplary method generally includes encoding a stream of bits using a polar code, determining a size of a circular buffer for storing the encoded stream of bits based, at least in part, on a minimum supported code rate and a control information size, and performing rate-matching on stored encoded stream of bits based, at least in part, on a mother code size, N, and a number of coded bits for transmission, E.

公开(公告)号：US20210234639A1

公开(公告)日：2021-07-29

申请号：US17054917

申请日：2019-05-28

申请人： Kai CHEN ,  Jian LI ,  Changlong XU ,  Liangming WU ,  Hao XU ,  Qualcomm incorporated

发明人： Kai CHEN ,  Jian LI ,  Changlong XU ,  Liangming WU ,  Hao XU

IPC分类号： H04L1/18 ,  H04L1/00 ,  H04L5/00

摘要： A device may identify that an incremental redundancy hybrid automatic repeat request (IR-HARQ) scheme is used in association with sequential transmissions of an information bit vector to or from another wireless device, where each transmission in the scheme is associated with a resource size. The device may identify a mother code length for a polar code based at least in part on an aggregate resource size associated with the sequential transmissions. The device may identify an adjusted bit index set for the polar code based at least in part on the IR-HARQ scheme. The device may transmit (or receive), for each transmission of the information bit vector, a respective subset of encoded bits generated by mapping the information bit vector to a set of polarized bit channels of the polar code in accordance with the bit index set.

公开(公告)号：US20210328718A1

公开(公告)日：2021-10-21

申请号：US17271746

申请日：2019-10-03

申请人： Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jian LI ,  Hao XU ,  Qualcomm Incorporated

发明人： Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jian LI ,  Hao XU

IPC分类号： H04L1/00 ,  H03M13/00 ,  H03M13/13 ,  H04L1/18

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.