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    Generation of polar codes with a variable block length utilizing puncturing
    1.
    发明授权
    Generation of polar codes with a variable block length utilizing puncturing 有权

    公开(公告)号：US11309997B2

    公开(公告)日：2022-04-19

    申请号：US16874264

    申请日：2020-05-14

    Applicant: QUALCOMM Incorporated

    Inventor： Changlong Xu ,  Jian Li ,  Jilei Hou ,  Neng Wang

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

    Abstract: Polar codes may be generated with a variable block length utilizing puncturing. Some puncturing schemes consider punctured bits as unknown bits, and set the log likelihood ratio (LLR) for those bits to zero; while other puncturing schemes consider punctured bits as known bits, and set the LLR for those bits to infinity. Each of these puncturing schemes has been observed to provide benefits over the other under different circumstances, especially corresponding to different coding rates or different signal to noise ratio (SNR). According to aspects of the present disclosure, both puncturing schemes are compared, and the puncturing scheme resulting in the better performance is utilized for transmission.

    UE-RS-BASED OPEN-LOOP AND SEMI-OPEN-LOOP MIMO
    2.
    发明申请
    UE-RS-BASED OPEN-LOOP AND SEMI-OPEN-LOOP MIMO 有权

    公开(公告)号：US20210058120A1

    公开(公告)日：2021-02-25

    申请号：US17092764

    申请日：2020-11-09

    Applicant: QUALCOMM Incorporated

    Inventor： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Neng Wang ,  Xiaohui Liu ,  Jilei Hou

    IPC: H04B7/0456 ,  H04B7/06 ,  H04L5/00 ,  H04L27/26

    Abstract: Design of precoding and feedback for user equipment (UE)-specific reference signals (UE-RS)-based open-loop and semi-open-loop multiple input, multiple output (MIMO) systems is discussed. Aspects of the present disclosure provide for sub-resource block (RB) random precoding that allows for greater diversity gain in a lower bandwidth. In addition, the recoding may be performed using resource element (RE)-level layer shifting that provides for a number of precoders to be assigned to a number of layers for every such continuous subcarrier. As such, two codewords may experience the same effective channel quality with channel quality indicators (CQI) being averaged across all of the layers.

    USE OF TIME AUTO-CORRELATION FOR CHANNEL ESTIMATION
    7.
    发明申请
    USE OF TIME AUTO-CORRELATION FOR CHANNEL ESTIMATION 审中-公开
    使用时间自相关的信道估计

    公开(公告)号：US20150381389A1

    公开(公告)日：2015-12-31

    申请号：US14768625

    申请日：2013-04-02

    Applicant: QUALCOMM Incorporated

    Inventor： Jianqiang Zhang ,  Jilei Hou ,  Neng Wang ,  Xiaohui Liu ,  Liangming Wu

    IPC: H04L25/02 ,  H04L5/14

    CPC classification number: H04L25/0204 ,  H04L5/143 ,  H04L25/0222 ,  H04L25/0228

    Abstract: Methods, systems, and apparatuses are described for channel estimation in wireless communications. The method, systems, and apparatuses operate in a time-division duplex (TDD) scheme. A first transmission may be received in a first sub-frame of a channel according to the TDD scheme. A time auto-correlation function may be applied to the first transmission to obtain a first auto-correlation sample. At least one characteristic of the channel may be estimated based at least in part on the first auto-correlation sample.

    Abstract translation: 描述了用于无线通信中的信道估计的方法，系统和装置。 方法，系统和装置以时分双工（TDD）方案工作。 可以根据TDD方案在信道的第一子帧中接收第一传输。 可以将时间自相关函数应用于第一传输以获得第一自相关样本。 可以至少部分地基于第一自相关样本来估计信道的至少一个特性。

    ENHANCED UPLINK AND DOWNLINK POWER CONTROL FOR LTE TDD EIMTA
    8.
    发明申请
    ENHANCED UPLINK AND DOWNLINK POWER CONTROL FOR LTE TDD EIMTA 有权
    增强LTE TDD EIMTA的上行和下行功率控制

    公开(公告)号：US20150256320A1

    公开(公告)日：2015-09-10

    申请号：US14429766

    申请日：2012-10-08

    Applicant: QUALCOMM INCORPORATED

    Inventor： Minghai Feng ,  Jiming Guo ,  Neng Wang ,  Jilei Hou ,  Hao Xu ,  Peter Gaal

    IPC: H04L5/14 ,  H04W74/00 ,  H04W72/04

    CPC classification number: H04L5/14 ,  H04W52/08 ,  H04W52/10 ,  H04W52/143 ,  H04W52/146 ,  H04W52/223 ,  H04W52/243 ,  H04W52/38 ,  H04W52/40 ,  H04W72/0473 ,  H04W72/082 ,  H04W74/004

    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines an interference type between a time division duplex (TDD) configuration subframe of a serving cell and a corresponding TDD configuration subframe of a neighboring cell, and sets a transmit power for an apparatus in the serving cell based on the interference type. The apparatus in the serving cell may be a user equipment (UE), in which case the apparatus applies a set of uplink (UL) open loop power control parameters for the UE. The apparatus in the serving cell may be a base station (eNB), in which case a DL transmit power is set for the eNB. Depending on the interference type, the DL transmit power may be a fixed, full power DL transmission or an adjusted DL transmission.

    Abstract translation: 提供了一种用于无线通信的方法，装置和计算机程序产品。 该装置确定服务小区的时分双工（TDD）配置子帧与相邻小区的相应TDD配置子帧之间的干扰类型，并且基于干扰类型来设置服务小区中的装置的发射功率。 服务小区中的装置可以是用户设备（UE），在这种情况下，该设备为UE应用一组上行（UL）开环功率控制参数。 服务小区中的装置可以是基站（eNB），在这种情况下，为eNB设置DL发射功率。 根据干扰类型，DL发射功率可以是固定的全功率DL传输或经调整的DL传输。

    Hybrid automatic repeat request (HARQ) with polar coded transmissions
    9.
    发明授权
    Hybrid automatic repeat request (HARQ) with polar coded transmissions 有权

    公开(公告)号：US11362769B2

    公开(公告)日：2022-06-14

    申请号：US16078341

    申请日：2016-11-04

    Applicant: QUALCOMM Incorporated

    Inventor： Changlong Xu ,  Jian Li ,  Jilei Hou ,  Neng Wang ,  Chao Wei

    IPC: H04L1/18 ,  H03M13/13

    Abstract: For communication utilizing polar codes, a hybrid automatic repeat request (HARQ) algorithm is provided that takes advantage of the benefits of chase combining HARQ (HARQ-CC) and incremental redundancy HARQ (HARQ-IR), by selecting one or the other in accordance with a code rate of the first transmission. In some examples, the HARQ algorithm utilizes HARQ-IR when the code rate in the first transmission is greater than a code rate threshold, and utilizes HARQ-CC when the code rate in the first transmission is less than the code rate threshold.

    TDD reconfiguration with consideration of DTX/DRX
    10.
    发明授权
    TDD reconfiguration with consideration of DTX/DRX 有权

    公开(公告)号：US11337245B2

    公开(公告)日：2022-05-17

    申请号：US14654660

    申请日：2014-01-27

    Applicant: QUALCOMM Incorporated ,  Chao Wei ,  Xipeng Zhu ,  Jilei Hou ,  Neng Wang

    Inventor： Chao Wei ,  Xipeng Zhu ,  Jilei Hou ,  Neng Wang

    IPC: H04W74/00 ,  H04W52/02 ,  H04W76/28

    Abstract: Methods, systems, and devices are described for discontinuous transmission and/or discontinuous reception in time division duplex (TDD) systems that may have data transmission formats dynamically reconfigured. An initial uplink-downlink (UL-DL) configuration for TDD communication between an eNB and user equipment (UE) may be established. This initial UL-DL configuration may be reconfigured to a different UL-DL configuration for one or more UEs in communication with the eNB. When a UE switches to discontinuous reception (DRX) mode, it may monitor control information from the eNB during DRX on periods, a frequency of the DRX on periods based on a reference UL-DL configuration irrespective of any reconfiguration of UL-DL configuration for a particular UE. In some aspects, a UE that is operating in a UL-DL reconfiguration mode may, upon entering DRX mode, autonomously discontinue operating in the UL-DL reconfiguration mode.

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