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公开(公告)号：US10944517B2
公开(公告)日：2021-03-09
申请号：US16078480
申请日：2016-11-04
Applicant: Jian Li , Changlong Xu , Jilei Hou , Neng Wang , Chao Wei , QUALCOMM Incorporated
Inventor： Jian Li , Changlong Xu , Jilei Hou , Neng Wang , Chao Wei
Abstract: For communication utilizing polar codes, a hybrid automatic repeat request algorithm utilizing incremental redundancy (HARQ-IR) may provide increased throughput by including new data, not based on an original transmission, in a HARQ retransmission. The number of retransmitted bits and new information bits in each HARQ retransmission may be controlled in order to manage a tradeoff between increased throughput and a decreased block error rate (BLER).
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公开(公告)号：US10721029B2
公开(公告)日：2020-07-21
申请号：US16091081
申请日：2017-03-03
Applicant: QUALCOMM Incorporated
Inventor： Changlong Xu , Jian Li , Chao Wei , Neng Wang , Jilei Hou
Abstract: 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：US20200100214A1
公开(公告)日：2020-03-26
申请号：US16467454
申请日：2018-01-24
Applicant: Chao WEI , Jilei HOU , Changlong XU , Jian LI , Qualcomm Incorporated
Inventor： Chao Wei , Changlong Xu , Jilei Hou , Jian Li
Abstract: Methods, systems, and devices for wireless communication are described. In order to exchange data over a given wireless communication network, a wireless device may first perform a cell acquisition procedure (e.g., to determine cell-specific information such as timing and frequency offsets, bandwidth, control channel formatting, etc.). In some systems, aspects of the timing information may be conveyed with scrambling codes applied to a master information block (MIB). Physical broadcast channel (PBCH) payloads, including MIB transmissions, may be jointly encoded with synchronization signal indices. Bursts of MIB transmissions may thus be decoded without blind decoding while maintaining error protection and low latency that may be necessary to obtain critical system information within the MIB.
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Patent Agency Ranking
公开(公告)号：US20190372712A1
公开(公告)日：2019-12-05
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
IPC: H04L1/00
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：US20180278272A1
公开(公告)日：2018-09-27
申请号：US15851303
申请日：2017-12-21
Applicant: QUALCOMM Incorporated
Inventor： Jian Li , Changlong Xu , Chao Wei , Jilei Hou , Jing Jiang
CPC classification number: H03M13/2906 , H03M13/152 , H03M13/2963 , H03M13/6393 , H03M13/6561
Abstract: Methods, systems, and devices for wireless communication are described that support channel selection for parity bits in polar coding techniques. In some cases, an encoder or decoder of a wireless device may assign information bits, frozen bits, and parity check bits to polar channels of an encoder or decoder based on reliability metrics. The information bits may initially be assigned and based on a channel index of the first information bit, the parity check bits may be assigned to channels having higher channel indices than the first information bit. After assignment, the bits may be encoded or decoded.
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76.发明授权Method and apparatus for data aided timing recovery in 10GBASE-T system 有权10GBASE-T系统数据辅助定时恢复的方法和装置公开(公告)号：US09544128B2
公开(公告)日：2017-01-10
申请号：US14768302
申请日：2013-02-21
Applicant: QUALCOMM INCORPORATED
Inventor： Hai Jiang , Yin Huang , Changlong Xu , Jian Li , Yisheng Xue
CPC classification number: H04L7/0037 , H04L7/0062 , H04L7/043 , H04L7/10
Abstract: A method of data-aided timing recovery for Ethernet systems is disclosed. A first device negotiates a pseudorandom number sequence with a second device and receives a data signal from the second device. The first device samples the received data signal to recover a first training sequence. The first device also generates a second training sequence based on the pseudorandom number sequence. The second training sequence is then synchronized with the first training sequence. The synchronized second training sequence is used to align a receive clock signal of the first device with the data signal received from the second device.
Abstract translation: 公开了一种用于以太网系统的数据辅助定时恢复的方法。 第一设备与第二设备协商伪随机数序列，并从第二设备接收数据信号。 第一设备对接收的数据信号进行采样以恢复第一训练序列。 第一设备还基于伪随机数序列生成第二训练序列。 然后将第二训练序列与第一训练序列同步。 同步的第二训练序列用于将第一设备的接收时钟信号与从第二设备接收的数据信号对准。
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77.发明申请METHOD AND APPARATUS FOR DATA AIDED TIMING RECOVERY IN 10GBASE-T SYSTEM 有权10GBASE-T系统中数据辅助时序恢复的方法与装置公开(公告)号：US20150372803A1
公开(公告)日：2015-12-24
申请号：US14768302
申请日：2013-02-21
Applicant: Hai JIANG , Yin HUANG , Changlong XU , Jian LI , Yisheng XUE , QUALCOMM INCORPORATED
Inventor： Hai Jiang , Yin Huang , Changlong Xu , Jian Li , Yisheng Xue
CPC classification number: H04L7/0037 , H04L7/0062 , H04L7/043 , H04L7/10
Abstract: A method of data-aided timing recovery for Ethernet systems is disclosed. A first device negotiates a pseudorandom number sequence with a second device and receives a data signal from the second device. The first device samples the received data signal to recover a first training sequence. The first device also generates a second training sequence based on the pseudorandom number sequence. The second training sequence is then synchronized with the first training sequence. The synchronized second training sequence is used to align a receive clock signal of the first device with the data signal received from the second device.
Abstract translation: 公开了一种用于以太网系统的数据辅助定时恢复的方法。 第一设备与第二设备协商伪随机数序列，并从第二设备接收数据信号。 第一设备对接收的数据信号进行采样以恢复第一训练序列。 第一设备还基于伪随机数序列生成第二训练序列。 然后将第二训练序列与第一训练序列同步。 同步的第二训练序列用于将第一设备的接收时钟信号与从第二设备接收的数据信号对准。
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78.发明申请INITIALIZATION OF TIMING RECOVERY AND DECISION-FEEDBACK EQUALIZATION IN A RECEIVER 审中-公开定时恢复的初始化和接收方的决策反馈均衡公开(公告)号：US20150326382A1
公开(公告)日：2015-11-12
申请号：US14763798
申请日：2013-01-28
Applicant: Jian LI , Yisheng XUE , Michael M. FAN , Jilei HOU , Yin Huang , Fuyun Ling , QUALCOMM INCORPORATED
Inventor： Jian Li , Yin Huang , Yisheng Xue , Michael M. Fan , Fuyun Ling , Jilei Hou
CPC classification number: H04L7/0004 , H04L25/03 , H04L25/0305 , H04L25/0307 , H04L2025/03656
Abstract: A method of initializing a receiver is performed during an initialization mode. Timing offset values for a timing recovery circuit are repeatedly selected. For each selected timing offset value, timing recovery is performed using the timing offset value and groups of weights for a decision feedback equalizer are repeatedly selected. Each selected group of weights is used to perform blind decision feedback equalization. For each selected group of weights, a metric indicating data reception quality is computed. A timing offset value and a group of weights are chosen based on the computed metrics.
Abstract translation: 在初始化模式期间执行初始化接收机的方法。 定时恢复电路的定时偏移值被重复选择。 对于每个选择的定时偏移值，使用定时偏移值执行定时恢复，并且重复地选择用于判决反馈均衡器的权重组。 每个选择的权重组用于执行盲判决反馈均衡。 对于每个选择的权重组，计算指示数据接收质量的度量。 基于所计算的度量来选择定时偏移值和权重组。
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