公开(公告)号：US20200351029A1

公开(公告)日：2020-11-05

申请号：US16758549

申请日：2018-10-02

申请人： Jian LI ,  Changlong XU ,  Kai CHEN ,  Liangming WU ,  Jing JIANG ,  Hao XU ,  QUALCOMM Incorporated

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

IPC分类号： H04L1/18 ,  H04L1/00

摘要： 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.

公开(公告)号：US20210152290A1

公开(公告)日：2021-05-20

申请号：US17045371

申请日：2019-04-04

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

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

IPC分类号： H04L1/18 ,  H04L1/00

摘要： Methods, systems, and devices for wireless communications are described. In some wireless communications systems, devices (e.g., base stations, user equipment (UEs), etc.) may utilize polar coding along with hybrid automatic repeat request (HARQ) techniques. In these systems, a device may encode bits for transmission by mapping information and parity check bits to a first set of polarized bit channels of a polar code. If this transmission is not successfully received at a decoding device, the encoding device may generate a HARQ retransmission. The device may copy information bits to a second set of polarized bit channels of a second polar code containing the first polar code and may assign parity check bits to the second set of bit channels for the copied information bits. These additional parity check bits for the repeated information bits may increase transmission reliability and may support improved early termination at the decoding device.

公开(公告)号：US20220140946A1

公开(公告)日：2022-05-05

申请号：US17310189

申请日：2019-01-23

申请人： Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jian LI ,  Jing JIANG ,  Hao XU ,  QUALCOMM Incorporated

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

IPC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.

公开(公告)号：US20210036718A1

公开(公告)日：2021-02-04

申请号：US15733711

申请日：2019-04-02

申请人： Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jing JIANG ,  Hao XU ,  QUALCOMM INCORPORATED

发明人： Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jing JIANG ,  Hao XU

IPC分类号： H03M13/13 ,  H03M13/00 ,  H03M13/43 ,  H03M13/45 ,  H04L1/18

摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an encoding device may determine a least reliable subset of information bits included in a set of information bits that includes a predefined active set of information bits to be encoded; may determine a codeword bit to be added to a codeword based at least in part on the least reliable subset of information bits, wherein adding the codeword bit to the codeword improves reliability of the least reliable subset of information bits; may add the codeword bit to the codeword; and may transmit the codeword. Numerous other aspects are provided.

公开(公告)号：US20200374034A1

公开(公告)日：2020-11-26

申请号：US16759255

申请日：2018-11-20

申请人： Changlong XU ,  Kai CHEN ,  Jing JIANG ,  Gabi SARKIS ,  Hao XU ,  QUALCOMM Incorporated

发明人： Changlong XU ,  Kai CHEN ,  Jing JIANG ,  Gabi SARKIS ,  Hao XU

IPC分类号： H04L1/00 ,  H04L1/08 ,  H04L1/18

摘要： Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for rate-matching a stream of bits encoded using polar codes. An exemplary method generally includes determining a target coding rate, RT, for transmitting a group of K information bits, based on a first coding rate, R1, corresponding to a first target block error rate (BLER) for a first transmission of a first redundancy version (RV) of the packet and a second coding rate, R2, corresponding to a second target BLER for a last transmission of a last RV of the packet; determining a circular buffer size, N, of a circular buffer for use in transmitting the first RV and the last RV of the packet; generating encoded information bits from the K information bits using a polar code having a mother code size of N; writing the encoded information bits to the circular buffer; determining a maximum number of retransmissions, based on a latency requirement for the packet; generating different RVs from the encoded information bits in the circular buffer, each RV based on a corresponding target BLER; and transmitting the first RV via a wireless medium.

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：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：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：US20200007302A1

公开(公告)日：2020-01-02

申请号：US16488150

申请日：2018-03-29

申请人： Alexan-dros MANOLAKOS ,  Chong LI ,  Jing JIANG ,  Yu ZHANG ,  Joseph Binamira SORIAGA ,  Wanshi CHEN ,  Tingfang JI ,  QUALCOMM Incorporated

发明人： Alexandros MANOLAKOS ,  Chong LI ,  Jing JIANG ,  Yu ZHANG ,  Joseph Binamira SORIAGA ,  Wanshi CHEN ,  Tingfang JI

IPC分类号： H04L5/02 ,  H04L5/00

摘要： Various aspects are described for schemes that address the potential puncturing of important reference signals (RSs) for enhanced mobile broadband (eMBB) applications, such as demodulation reference signal (DMRS), channel state information reference signal (CSIRS), tracking reference signal, and general reference signal. The schemes can be used for recovery of eMBB's RS puncturing from dynamic multiplexing of ultra-reliable-low-latency communications (URLLC) and eMBB. The schemes include a block-based scheme and an over-provisioning scheme. The schemes modify an existing RS pattern before puncturing occurs in response to a presence of the URLLC traffic. In addition, there can be an option not to use (e.g., disable) time-domain orthogonal cover code (TD-OCC) for the RSs.

公开(公告)号：US20080192678A1

公开(公告)日：2008-08-14

申请号：US11833329

申请日：2007-08-03

申请人： Pierre BERTRAND ,  Anand DABAK ,  Jing JIANG

发明人： Pierre BERTRAND ,  Anand DABAK ,  Jing JIANG

IPC分类号： H04Q7/00

CPC分类号： H04W74/0866 ,  H04J3/0682 ,  H04L27/2607

摘要： Apparatus and method for accessing a wireless telecommunications network by transmitting a random access signal. The random access signal includes a cyclic prefix signal and a guard interval. The cyclic prefix signal and the guard interval are adapted to optimize random access channel coverage in a telecommunications cell. The disclosed method for transmitting a random access signal includes transmitting a cyclic prefix signal. The duration of the cyclic prefix signal is approximately the sum of a maximum round trip delay duration of the telecommunications cell and a maximum delay spread duration. The method further includes providing a guard interval. The guard interval duration being approximately the duration of the maximum round trip delay of the telecommunications cell.

摘要翻译： 通过发送随机接入信号来接入无线电信网络的装置和方法。 随机接入信号包括循环前缀信号和保护间隔。 循环前缀信号和保护间隔适于优化电信小区中的随机接入信道覆盖。 所公开的用于发送随机接入信号的方法包括发送循环前缀信号。 循环前缀信号的持续时间大约是电信小区的最大往返延迟持续时间和最大延迟扩展持续时间之和。 该方法还包括提供保护间隔。 保护间隔持续时间大约是电信小区的最大往返延迟的持续时间。