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    Power Amplifier System Including A Composite Digital Predistorter
    41.
    发明申请
    Power Amplifier System Including A Composite Digital Predistorter 有权
    包括复合数字预失真器的功率放大器系统

    公开(公告)号：US20140254716A1

    公开(公告)日：2014-09-11

    申请号：US13786406

    申请日：2013-03-05

    Applicant: QUALCOMM INCORPORATED

    Inventor： Hao Zhou ,  Ning Zhang

    IPC: H04B1/04

    CPC classification number: H04B1/0475 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3258 ,  H03F1/3294 ,  H04B2001/0425

    Abstract: A power amplifier system including a composite digital predistorter (DPD) ensuring optimized linearity for the power amplifier is described. In this system, a digital-to-analog converter (DAC), an analog filter, a first mixer, and the power amplifier are serially coupled to the composite DPD. A second mixer, a receive gain block, and an analog-to-digital converter (ADC) are serially coupled to the output of the power amplifier. A DPD training component is coupled between the inputs of the composite DPD and the ADC. The composite DPD includes a memory-based DPD, e.g., a memory polynomial (MP) DPD, a memoryless-linearizing DPD, e.g., a look-up table (LUT) DPD, and two multiplexers.

    Abstract translation: 描述了一种包括确保功率放大器的优化线性度的复合数字预失真器（DPD）的功率放大器系统。 在该系统中，数模转换器（DAC），模拟滤波器，第一混频器和功率放大器串联耦合到复合DPD。 第二混频器，接收增益模块和模数转换器（ADC）串联耦合到功率放大器的输出端。 DPD训练组件耦合在复合DPD和ADC的输入之间。 复合DPD包括基于存储器的DPD，例如存储器多项式（MP）DPD，无记忆线性化DPD，例如查找表（LUT）DPD和两个多路复用器。

    Method And System For Dynamic AMPDU Duration Control In A Wireless Communication System
    42.
    发明申请
    Method And System For Dynamic AMPDU Duration Control In A Wireless Communication System 有权
    无线通信系统中动态AMPDU持续时间控制的方法与系统

    公开(公告)号：US20140219110A1

    公开(公告)日：2014-08-07

    申请号：US13762338

    申请日：2013-02-07

    Applicant: QUALCOMM INCORPORATED

    Inventor： Shu Du ,  Zhanfeng Jia ,  Ning Zhang ,  Chin-Hung Chen ,  James S. Cho ,  Rahul Tandra ,  Qinghai Gao

    IPC: H04W24/02

    CPC classification number: H04W24/02 ,  H04B7/0452 ,  H04L1/0007

    Abstract: A method of providing aggregated MAC protocol data unit (AMPDU) duration control in a wireless communication device includes setting an AMPDU duration. Pass/fail statistics are collected for each MPDU of an AMPDU in a time window, W. A packet error rate (PER) difference is calculated between first and last sets of MPDUs for each AMPDU in the window. An average PER difference is calculated across all AMPDUs in the window. When the average PER difference is greater than a first threshold, then the AMPDU duration is decreased. When the difference is less than a second threshold, then the AMPDU duration is increased. When the difference is within the first and the second thresholds, then the method returns to the step of collecting for a next time window. The AMPDU duration can also be adjusted based on detected Doppler and line-of-sight transmissions.

    Abstract translation: 在无线通信设备中提供聚合MAC协议数据单元（AMPDU）持续时间控制的方法包括设置AMPDU持续时间。 在时间窗口W中收集AMPDU的每个MPDU的通过/失败统计信息。在窗口中的每个AMPDU的第一组和最后一组MPDU之间计算分组错误率（PER）差异。 在窗口中的所有AMPDU之间计算平均PER差异。 当平均PER差大于第一阈值时，AMPDU持续时间减小。 当差值小于第二阈值时，AMPDU持续时间增加。 当差异在第一和第二阈值内时，该方法返回到下一个时间窗口的收集步骤。 AMPDU持续时间也可以根据检测到的多普勒和视线传输进行调整。

    PACKET IDENTIFICATION FOR POWER SAVING IN WIRELESS COMMUNICATION NETWORKS
    43.
    发明申请
    PACKET IDENTIFICATION FOR POWER SAVING IN WIRELESS COMMUNICATION NETWORKS 审中-公开
    用于无线通信网络节电的分组识别

    公开(公告)号：US20140010102A1

    公开(公告)日：2014-01-09

    申请号：US14018150

    申请日：2013-09-04

    Applicant: QUALCOMM Incorporated

    Inventor： James Simon Cho ,  Youhan Kim ,  Ning Zhang ,  Shiwei Zhao

    IPC: H04W52/02

    CPC classification number: H04W52/0206 ,  H04W8/186 ,  H04W52/0229 ,  H04W60/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/22

    Abstract: A network coordinator can assign an association identifier (AID) and/or a group identifier (GID) to identify a client station to which a packet is to be transmitted and to enable the client station to determine whether to receive an incoming packet. The network coordinator can determine a base AID that is representative of the network coordinator and can assign at least one AID to client stations to minimize the probability of client stations associated with proximate network coordinators being assigned the same AIDs. The network coordinator can also assign at least one GID to a group of client stations to minimize the probability of groups of client stations associated with the proximate network coordinators being assigned the same GID. The client station can analyze indications of a received AID and/or received GID to determine whether to receive the packet or whether to switch to an inactive power state.

    Abstract translation: 网络协调器可以分配关联标识符（AID）和/或组标识符（GID）来标识要向其发送分组的客户端站，并使客户端站能够确定是否接收输入分组。 网络协调器可以确定代表网络协调器的基本AID，并且可以向客户站分配至少一个AID以最小化与被分配相同AID的邻近网络协调器相关联的客户站的概率。 网络协调器还可以向一组客户端站分配至少一个GID，以最小化与正在分配相同GID的邻近网络协调器相关联的客户端站组的概率。 客户端站可以分析所接收的AID和/或接收到的GID的指示，以确定是接收分组还是切换到无效功率状态。

    Enhanced antenna array training
    45.
    发明授权
    Enhanced antenna array training 有权

    公开(公告)号：US10200097B2

    公开(公告)日：2019-02-05

    申请号：US15470500

    申请日：2017-03-27

    Applicant: QUALCOMM Incorporated

    Inventor： Beomsup Kim ,  Ning Zhang ,  Xiaoxin Zhang ,  Youhan Kim

    IPC: H04B7/06 ,  H04B7/0456 ,  H04B17/327 ,  H04B7/08 ,  H04L25/02 ,  H04W84/12 ,  H04W88/08

    Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) may switch antenna array configurations during reception of a packet to determine channel characteristic information for the antenna array configurations. The AP may use the channel characteristic information to select an antenna array configuration for use, and to determine a beamforming steering matrix for the selected antenna array configuration. In some cases, the AP may use multiple antenna array configurations to transmit training fields in the preamble of a packet. The AP may receive channel characteristic information for each of the antenna array configurations. The AP may use the channel characteristic information to select an antenna array configuration for use, and to determine a beamforming steering matrix for the selected antenna array configuration.

    PROTECTION OF RANGING SOUNDING SIGNALS FROM PHYSICAL LEVEL ATTACKS
    46.
    发明申请
    PROTECTION OF RANGING SOUNDING SIGNALS FROM PHYSICAL LEVEL ATTACKS 审中-公开

    公开(公告)号：US20180287826A1

    公开(公告)日：2018-10-04

    申请号：US15943243

    申请日：2018-04-02

    Applicant: QUALCOMM Incorporated

    Inventor： Erik David Lindskog ,  Ning Zhang ,  Naveen Kumar Kakani ,  Alireza Raissinia ,  Xiaoxin Zhang

    IPC: H04L25/02

    CPC classification number: H04L25/0226 ,  H04L25/0204 ,  H04L63/14 ,  H04W12/12 ,  H04W84/12

    Abstract: Generally, the described techniques provide for protection mechanisms for sounding training signals transmitted between wireless devices when performing ranging sounding estimation. For example, sounding training signals may be encoded to include a sequence of phase rotations or cyclic shifts to protect the sounding training signal from peer devices. In some cases, encoding information associated with a long training field (LTF) may be transmitted either before or after the LTF is transmitted. Additionally or alternatively, a time delay may be introduced to the sounding training signal, where timing information may be removed from one or more fields of the sounding training signal and the time delay may be appended to an interframe spacing. Alternatively, a frame may be split into multiple frames with the sounding training signal in a first frame, and timing information in a second frame that is offset in time from the first frame.

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