公开(公告)号：US10784901B2

公开(公告)日：2020-09-22

申请号：US15202207

申请日：2016-07-05

Applicant: QUALCOMM Incorporated

Inventor： Shrinivas Kudekar ,  Se Yong Park ,  Alexandros Manolakos ,  Krishna Kiran Mukkavilli ,  Vincent Loncke ,  Joseph Binamira Soriaga ,  Jing Jiang ,  Thomas Joseph Richardson

IPC: H03M13/00 ,  H04L1/00 ,  H03M13/03 ,  H03M13/11 ,  H04L1/18

Abstract: Certain aspects of the present disclosure generally relate to techniques for puncturing of structured low density parity check (LDPC) codes. A method for wireless communications by wireless node is provided. The method generally includes encoding a set of information bits based on a LDPC code to produce a code word, the LDPC code defined by a matrix having a first number of variable nodes and a second number of check nodes, puncturing the code word to produce a punctured code word, wherein the puncturing is performed according to a first puncturing pattern designed to puncture bits corresponding to one or more of the variable nodes having a certain degree of connectivity to the check nodes, and transmitting the punctured code word.

公开(公告)号：US10348329B2

公开(公告)日：2019-07-09

申请号：US15894197

申请日：2018-02-12

Applicant: QUALCOMM Incorporated

Inventor： Joseph Binamira Soriaga ,  Shrinivas Kudekar ,  Thomas Joseph Richardson ,  Jing Jiang ,  Renqiu Wang

IPC: H04L1/00 ,  H03M13/11 ,  H03M13/00 ,  H04L1/18 ,  H03M13/09

Abstract: Aspects of the present disclosure relate to low density parity check (LDPC) coding utilizing a configurable circular buffer for rate matched transmissions. The circular buffer may be configured based on a selected mother code rate and a fixed circular buffer length. For example, the respective sizes of the systematic and parity bit sections of the circular buffer may be variable based on the selected mother code rate.

公开(公告)号：US10177797B2

公开(公告)日：2019-01-08

申请号：US14593920

申请日：2015-01-09

Applicant: QUALCOMM Incorporated

Inventor： Venkatesan Nallampatti Ekambaram ,  Jubin Jose ,  Xinzhou Wu ,  Thomas Joseph Richardson

IPC: H04W24/08 ,  H04B1/10 ,  H04W56/00

Abstract: Apparatus and method are provided for estimating the shortest time of arrival or the shortest round-trip time (RTT) of radio signals between communication devices in a wireless network. Filtering is performed by adaptive filters with suppressed side lobes adjustable in the time domain and widths of main lobes adjustable in the frequency domain to improve detection of signals on the shortest path of arrival or line-of-sight (LOS) path while mitigating the effects signals received from longer paths of arrival or non-line-of-sight (NLOS) paths.

公开(公告)号：US20180234114A1

公开(公告)日：2018-08-16

申请号：US15894197

申请日：2018-02-12

Applicant: QUALCOMM Incorporated

Inventor： Joseph Binamira Soriaga ,  Shrinivas Kudekar ,  Thomas Joseph Richardson ,  Jing Jiang ,  Renqiu Wang

IPC: H03M13/11 ,  H04L1/00

CPC classification number: H03M13/1148 ,  H03M13/09 ,  H03M13/116 ,  H03M13/1185 ,  H03M13/1188 ,  H03M13/6306 ,  H03M13/6356 ,  H03M13/6393 ,  H03M13/6516 ,  H04L1/00 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/1819

Abstract: Aspects of the present disclosure relate to low density parity check (LDPC) coding utilizing a configurable circular buffer for rate matched transmissions. The circular buffer may be configured based on a selected mother code rate and a fixed circular buffer length. For example, the respective sizes of the systematic and parity bit sections of the circular buffer may be variable based on the selected mother code rate.

公开(公告)号：US10044371B2

公开(公告)日：2018-08-07

申请号：US14954702

申请日：2015-11-30

Applicant: QUALCOMM Incorporated

Inventor： Thomas Joseph Richardson ,  Michael George Luby

IPC: H03M13/15 ,  G06F11/10 ,  G06F11/00

Abstract: Systems and methods which implement repair bandwidth control techniques, such as may provide a feedback control structure for regulating repair bandwidth in the storage system. Embodiments control a source object repair rate in a storage system by analyzing source objects represented in a repair queue to determine repair rate metrics for the source objects and determining a repair rate based on the repair rate metrics to provide a determined level of recovery of source data stored as by the source objects and to provide a determined level of repair efficiency in the storage system. For example, embodiments may determine a per storage object repair rate (e.g., a repair rate preference for each of a plurality of source objects) and select a particular repair rate (e.g., a maximum repair rate) for use by a repair policy. Thereafter, the repair policy of embodiments may implement repair of one or more source objects in accordance with the repair rate.

公开(公告)号：US09735868B2

公开(公告)日：2017-08-15

申请号：US14339170

申请日：2014-07-23

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Jovicic ,  Mahadevi Pillai Perumal ,  Thomas Joseph Richardson ,  Junyi Li

IPC: H04B10/116

CPC classification number: H04B10/116

Abstract: Methods, systems, and devices are described for deriving an identifier encoded in a visible light communication (VLC) signal. One method includes capturing a first part of the VLC signal; extracting, from the first part of the VLC signal, a first pattern of bits representing at least a portion of the identifier encoded in the VLC signal; comparing the first pattern of bits to different portions of a plurality of identifiers; and identifying, based at least in part on the comparing, a subset of the plurality of identifiers as candidate matches to the identifier encoded in the VLC signal.

公开(公告)号：US20170083416A1

公开(公告)日：2017-03-23

申请号：US14954855

申请日：2015-11-30

Applicant: QUALCOMM Incorporated

Inventor： Thomas Joseph Richardson ,  Michael George Luby

IPC: G06F11/20 ,  G06F11/16

CPC classification number: G06F11/2094 ,  G06F11/1076 ,  G06F11/1092 ,  G06F11/1666 ,  G06F2201/845

Abstract: Systems and methods utilizing available storage space within a storage system (e.g., as “supplemental” storage) and/or implement less physical storage space in the storage system (e.g., reduced storage overhead) through operation of fragment pre-storage techniques are disclosed. Such fragment pre-storage utilization of the aforementioned available storage space may provide operation emulating larger storage overhead than is actually provided in the storage system, facilitate improved repair rates, and/or facilitate reduced repair bandwidth in the storage system according to embodiments. A fragment pre-storage repair policy may implement source object repair whereby additional fragments for the source object are pre-generated and pre-stored in the storage system as transient fragments, whereby the transient fragments are moved to corresponding storage nodes when those storage nodes become physically present in the storage system.

公开(公告)号：US20170060469A1

公开(公告)日：2017-03-02

申请号：US14954792

申请日：2015-11-30

Applicant: QUALCOMM Incorporated

Inventor： Michael George Luby ,  Thomas Joseph Richardson

IPC: G06F3/06

CPC classification number: G06F3/0644 ,  G06F3/0619 ,  G06F3/0638 ,  G06F3/067 ,  G06F3/0689 ,  G06F11/1076 ,  G06F11/1088 ,  H03M13/154 ,  H03M13/2906

Abstract: Systems and methods which implement one or more data organization techniques that facilitate efficient access to source data stored by a storage system are disclosed. Data organization techniques implemented according to embodiments are adapted to optimize (e.g., maximize) input/output efficiency and/or (e.g., minimize) storage overhead, while maintaining mean time to data loss, repair efficiency, and/or traffic efficiency. Data organization techniques as may be implemented by embodiments include blob based organization techniques, grouped symbols organization techniques, data ordering organization techniques, and combinations thereof.

Abstract translation: 公开了实现一种或多种数据组织技术的系统和方法，其促进对存储系统存储的源数据的有效访问。 根据实施例实现的数据组织技术适于优化（例如，最大化）输入/输出效率和/或（例如，最小化）存储开销，同时保持数据丢失，修复效率和/或业务效率的平均时间。 可以由实施例实现的数据组织技术包括基于Blob的组织技术，分组符号组织技术，数据排序组织技术及其组合。

公开(公告)号：US20160295535A1

公开(公告)日：2016-10-06

申请号：US14678266

申请日：2015-04-03

Applicant: QUALCOMM Incorporated

Inventor： Jubin Jose ,  Enkhbayasgalan Gantsog ,  Thomas Joseph Richardson ,  Frank Anton Lane ,  Xinzhou Wu ,  Venkatesan Nallampatti Ekambaram

IPC: H04W56/00 ,  H04L7/00

CPC classification number: H04W56/003 ,  H04L7/0037 ,  H04L27/0014 ,  H04L27/2657 ,  H04L27/2662 ,  H04L2027/0018 ,  H04W56/0035

Abstract: Systems and methods are disclosed that may determine phase offsets in wireless devices. In accordance with some embodiments, a phase of a local oscillator signal associated with transmission of data from a wireless device may be measured by generating a reference signal having a frequency that is a selected integer value times a frequency of a baseband clock signal, generating the local oscillator (LO) signal to have a frequency substantially equal to a carrier frequency of the data transmission, and mixing the reference signal and the LO signal to generate a mixed signal indicative of the phase of the LO signal.

Abstract translation: 公开了可以确定无线设备中的相位偏移的系统和方法。 根据一些实施例，可以通过产生具有频率为基准时钟信号的频率的选定整数值的参考信号来测量与来自无线设备的数据传输相关联的本地振荡器信号的相位，生成 本地振荡器（LO）信号具有基本上等于数据传输的载波频率的频率，并且混合参考信号和LO信号以产生指示LO信号的相位的混合信号。

公开(公告)号：US09306667B2

公开(公告)日：2016-04-05

申请号：US14185836

申请日：2014-02-20

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Jovicic ,  Thomas Joseph Richardson ,  Junyi Li

IPC: H04B10/116 ,  H04L7/00

CPC classification number: H04B10/116 ,  H04L7/0075

Abstract: A method, an apparatus, and a computer program product for communication are provided. The apparatus obtains a message for communication using visible light communication (VLC) through a light emitting diode (LED) luminary device and formats the message using a synchronization signal followed by one or more data signals. The synchronization signal and/or the one or more data signals are modulated using a Frequency Shift Keying (FSK) modulation scheme. The apparatus further receives a dimming level value associated with a brightness of light to be emitted from the LED luminary device, generates a waveform with frequencies based on the formatted message and a duty cycle for the LED luminary device based on the dimming level value, and sends the generated waveform to the LED luminary device for communication using VLC.

Abstract translation: 提供了一种用于通信的方法，装置和计算机程序产品。 该装置通过发光二极管（LED）照明装置获得用于使用可见光通信（VLC）的通信的消息，并且使用同步信号格式化消息，随后是一个或多个数据信号。 使用频移键控（FSK）调制方案来调制同步信号和/或一个或多个数据信号。 该装置还接收与LED发光装置发射的光的亮度相关联的调光电平值，基于调光电平值生成基于格式化消息的频率的波形和LED发光装置的占空比，以及 将生成的波形发送到LED发光装置，以使用VLC进行通信。