公开(公告)号：US09191050B1

公开(公告)日：2015-11-17

申请号：US14465741

申请日：2014-08-21

Applicant: QUALCOMM Incorporated

Inventor： Insoo Hwang ,  Bongyong Song ,  Cong Nguyen ,  Peter David Heidmann ,  Samir Salib Soliman

IPC: H04B1/10 ,  H04B1/12

CPC classification number: H04B1/525

Abstract: Aspects of the disclosure are directed to interference cancellation and wireless communication including determining the strength of a reference signal; comparing the strength of the reference signal to a first threshold and a second threshold; and performing one of the following: updating at least one coefficient if the strength of the reference signal is above the first threshold; freezing the at least one coefficient if the strength of the reference signal is between the first threshold and the second threshold; or setting an interference cancelation (IC) circuit to OFF if the strength of the reference signal is below both the first threshold and the second threshold.

Abstract translation: 本公开的方面涉及干扰消除和无线通信，包括确定参考信号的强度; 将参考信号的强度与第一阈值和第二阈值进行比较; 并且执行以下之一：如果所述参考信号的强度高于所述第一阈值，则更新至少一个系数; 如果参考信号的强度在第一阈值和第二阈值之间，则冻结该至少一个系数; 或者如果参考信号的强度低于第一阈值和第二阈值，则将干扰消除（IC）电路设置为OFF。

公开(公告)号：US20230318636A1

公开(公告)日：2023-10-05

申请号：US17657336

申请日：2022-03-30

Applicant: Qualcomm Incorporated

Inventor： Pushkar Bajirao Kulkarni ,  Joseph Patrick Burke ,  Cong Nguyen ,  Sanghoon Kim ,  Abdelrahman Mohamed Ahmed Mohamed Ibrahim ,  Igor Gutman

IPC: H04B1/04 ,  H04L5/00 ,  H04B1/525

CPC classification number: H04B1/0458 ,  H04L5/0048 ,  H04B1/525 ,  H04B2001/0425

Abstract: An apparatus is disclosed for frequency-based predistortion signal generation. In an example aspect, the apparatus includes a predistortion linearizer circuit configured to be coupled to an input of an amplifier. The amplifier has non-linearities associated with multiple frequencies. The multiple frequencies include a first subset of frequencies and a second subset of frequencies. The predistortion linearizer circuit is also configured to accept an input signal. The predistortion linearizer circuit is additionally configured to generate, based on the input signal, a compensation signal to attenuate the non-linearities existing within the first subset of frequencies more than the non-linearities existing within the second subset of frequencies. The predistortion linearizer circuit is further configured to generate a pre-distorted signal based on the input signal and the compensation signal.

公开(公告)号：US20210144657A1

公开(公告)日：2021-05-13

申请号：US17092145

申请日：2020-11-06

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Joseph Patrick Burke ,  Cong Nguyen ,  Krishna Kiran Mukkavilli ,  Tingfang Ji ,  Muhammad Sayed Khairy Abdelghaffar ,  Yi Huang ,  Wanshi Chen ,  Seyedkianoush Hosseini

IPC: H04W52/52 ,  H04B1/401 ,  H04W52/02 ,  H04W52/14 ,  H04W8/24 ,  H04W72/04 ,  H04W52/36

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be capable of operating according to a first transmission efficiency operating mode and a second transmission efficiency operating mode that is less power efficient than the first transmission efficiency operating mode. The first transmission efficiency operating mode may be associated with a first undesired emission level that is greater than a second undesired emission level associated with the second transmission efficiency operating mode. The UE may select to operate in one of the two transmission efficiency operating modes based on one or more communication parameters (e.g., indicated by control signaling received from a base station). For example, the UE may select to operate in the first transmission efficiency operating mode based on determining that one or more of the communication parameters satisfies at least one parameter criterion for operating in the first transmission efficiency operating mode.

公开(公告)号：US09590673B2

公开(公告)日：2017-03-07

申请号：US14601038

申请日：2015-01-20

Applicant: QUALCOMM Incorporated

Inventor： Insoo Hwang ,  Bongyong Song ,  Cong Nguyen

IPC: H04B1/12 ,  H04B1/403 ,  H04B1/525

CPC classification number: H04B1/126 ,  H04B1/406 ,  H04B1/525

Abstract: Aspects of the disclosure are directed to interference cancellation and wireless communication. A method of performing analog interference cancellation in a wireless communications device having a transmitter and a receiver includes receiving a reference signal representative of an interfering signal transmitted by the transmitter, selecting a first target interference type from one of a plurality of interference types affecting a an RF signal received by the receiver, configuring a first filter of an interference cancellation circuit using a coefficient computed based on the first target interference type, and cancelling interference in the RF signal using an output of the first filter. Coefficient computation may be performed in a switched manner between analog and digital domain, simultaneously in multiple domains, or in a cascaded manner that provides digital interference cancellation.

Abstract translation: 本公开的方面涉及干扰消除和无线通信。 一种在具有发射机和接收机的无线通信设备中执行模拟干扰消除的方法包括：接收表示由发射机发射的干扰信号的参考信号，从多个干扰类型中的一个干扰类型中选择一个影响一个 由接收机接收的RF信号，使用基于第一目标干扰类型计算的系数来配置干扰消除电路的第一滤波器，以及使用第一滤波器的输出来消除RF信号中的干扰。 系数计算可以以模拟和数字域之间的切换方式，同时在多个域中，或以提供数字干扰消除的级联方式执行。

公开(公告)号：US20160374022A1

公开(公告)日：2016-12-22

申请号：US15053679

申请日：2016-02-25

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Stephen Jay Shellhammer ,  Joseph Binamira Soriaga ,  Naga Bhushan ,  Tingfang Ji ,  Cong Nguyen ,  Joseph Patrick Burke ,  Wei Zeng ,  Jing Jiang

IPC: H04W52/02 ,  H04L5/00 ,  H04W76/04

CPC classification number: H04W52/0235 ,  H04L5/0007 ,  H04W52/0216 ,  H04W76/27 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/24

Abstract: Systems and methods are disclosed for enhancing the power efficiency of low power internet of everything (JOE) devices or user equipments (UEs). A UE or IOE having a low power companion receiver maintains its full power receiver in a sleep state until it receives a wake up indicator from a base station. In response to the wake up signal, the UE or IOE powers up its full power receiver and receives data from the base station. The base station further schedules the wake up signals so as not to collide with control signals expected by UEs or IOEs without low power receivers, or those UEs and IOEs are configured to detect and react to the wake up signals.

Abstract translation: 公开了用于提高所有（JOE）设备或用户设备（UE）的低功率互联网的功率效率的系统和方法。 具有低功率配套接收机的UE或IOE将其全功率接收机维持在睡眠状态，直到其从基站接收到唤醒指示符。 响应于唤醒信号，UE或IOE向其全功率接收机供电，并从基站接收数据。 基站进一步调度唤醒信号，以便不与没有低功率接收机的UE或IOE预期的控制信号相冲突，或者这些UE和IOE被配置为检测和对唤醒信号做出反应。

公开(公告)号：US20160373237A1

公开(公告)日：2016-12-22

申请号：US15017500

申请日：2016-02-05

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay Shellhammer ,  Peter Pui Lok Ang ,  Joseph Patrick Burke ,  Tingfang Ji ,  Cong Nguyen ,  Joseph Binamira Soriaga

IPC: H04L7/00 ,  H04L7/04 ,  H04L27/04 ,  H04L5/00 ,  H04W40/00

CPC classification number: H04L7/0012 ,  H04L5/0007 ,  H04L5/0053 ,  H04L7/043 ,  H04L27/0008 ,  H04L27/04 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2675 ,  H04L27/2692 ,  H04W40/005 ,  H04W52/0229 ,  H04W52/0283 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/21

Abstract: When embedding a signal into a selected subcarrier of a multicarrier downlink waveform of regular data/control signaling, a base station modulates the embedded signal with a different modulation scheme than the other data in the downlink waveform. The base station nulls adjacent subcarriers to minimize interference at a low-power wake-up receiver of an IOE device(s). The IOE device wakes up the low-power wake-up receiver at scheduled times to listen for the signal. For synchronization signals, the IOE device corrects a local clock based on a correlation value of the signal to a predetermined sequence. For wake-up signals, the IOE device correlates whatever is detected at the antenna to a predetermined sequence and compares the correlation value to a predetermined threshold. If the threshold is met, the IOE device registers a wake-up signal and wakes the primary transceiver of the device. If not, the receiver goes back to sleep.

Abstract translation: 当将信号嵌入到常规数据/控制信令的多载波下行链路波形的选定子载波中时，基站以与下行链路波形中的其他数据不同的调制方式来调制嵌入信号。 基站使相邻子载波无效以最小化在IOE设备的低功率唤醒接收机处的干扰。 IOE设备在预定时间唤醒低功耗唤醒接收器以监听信号。 对于同步信号，IOE设备基于信号的相关值到预定的序列来校正本地时钟。 对于唤醒信号，IOE设备将在天线处检测到的任何内容与预定序列相关，并将相关值与预定阈值进行比较。 如果满足阈值，IOE设备将注册唤醒信号并唤醒设备的主收发器。 如果没有，接收机返回睡眠状态。