公开(公告)号：US09992124B2

公开(公告)日：2018-06-05

申请号：US14879262

申请日：2015-10-09

申请人： ITRON, INC.

发明人： Danny Ray Seely ,  Michael David McNamee

IPC分类号： H04B7/02 ,  H04L12/851 ,  H04B1/06 ,  H04W52/02

CPC分类号： H04L47/2483 ,  H04B1/06 ,  H04L47/245 ,  H04W52/0229 ,  H04W52/0258 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/22 ,  Y02D70/26 ,  Y02D70/40

摘要： An example method of receiving a data packet includes receiving a data packet at a channel receiver of at least one channel receiver each associated with a channel, providing the data packet to a data packet identification block that corresponds to the channel receiver, validating the data packet at the data packet identification block, and providing the validated data packet to an available decoder block of at least one decoder block capable of performing one or more decoding functions, where a quantity of the decoder blocks is less than a quantity of the data packet identification blocks and optimized according to one or more goals. If no decoder block is available and the validated data packet is a higher priority data packet, a decoder block processing a lower priority data packet may be forced to stop processing the lower priority data packet and process the higher priority data packet.

公开(公告)号：US09426680B2

公开(公告)日：2016-08-23

申请号：US13776528

申请日：2013-02-25

申请人： Itron, Inc.

发明人： Danny Ray Seely ,  Jeffrey Steele Sanders

IPC分类号： H04W24/08 ,  H04W24/04

CPC分类号： H04W24/08 ,  H04W24/04

摘要： A multichannel radio receiver configured for real-time radio channel assessment is described herein. In one example, a radio frequency (RF) front end provides a frequency spectrum which is converted into a digitized spectrum. Within a digital subsystem, resources (e.g., software or a hardware device) may analyze channels or portions of spectrum within the digitized spectrum for a packet error rate (PER) at a plurality of power levels and a plurality of modulation schemes. The analysis may result a required received signal strength indicator (RSSI) that is needed to result in a particular read reliability requirement (RRR). Using the required RSSI, endpoints communicating with the multichannel radio may be associated with a channel(s), modulation scheme(s) and/or power level(s) that results in the RRR. The analysis may be performed by one or more resources operating in parallel and operating in the background to other communications between the endpoints and multichannel radio receiver.

摘要翻译： 本文描述了被配置用于实时无线电信道评估的多信道无线电接收机。 在一个示例中，射频（RF）前端提供被转换成数字化频谱的频谱。 在数字子系统内，资源（例如，软件或硬件设备）可以在多个功率电平和多个调制方案中分析数字化频谱内的频谱或分量差错率（PER）的频谱或部分。 分析可能导致需要的接收信号强度指示符（RSSI），以产生特定的读取可靠性要求（RRR）。 使用所需的RSSI，与多信道无线电通信的端点可以与导致RRR的信道，调制方案和/或功率级相关联。 分析可以由并行操作的一个或多个资源来执行，并且在后台操作在端点和多信道无线电接收机之间的其他通信。

公开(公告)号：US20140241472A1

公开(公告)日：2014-08-28

申请号：US13776587

申请日：2013-02-25

申请人： ITRON, INC.

发明人： Danny Ray Seely

IPC分类号： H04L7/04

CPC分类号： H04L7/042 ,  H04L7/10 ,  H04L27/1566 ,  H04L27/16 ,  H04L27/2335 ,  H04L2027/003 ,  H04L2027/0046 ,  H04L2027/0065 ,  H04L2027/0085

摘要： A decoder for a modulation scheme is configured to operate close to the radio noise floor. A correlation value may be constantly updated, in an effort to match to a signature to a preamble of a packet. A low clamp value may act as a floor to which a calculated correlation value is set, if it is less than the low clamp value. If a correlation threshold is exceeded, then the correlation value is examined to determine it is a peak value. If the peak is found, power of the preamble is compared to a power threshold that is relative to the radio noise floor. If the power threshold is exceeded, positive correlation is detected. A channel optimizer is used to remove the frequency misalignment. This enables the use of a filter that is approximately equal to the occupied bandwidth of the incoming signal, further rejecting noise and interference.

摘要翻译： 用于调制方案的解码器被配置为在无线电本底噪声附近操作。 可以不断更新相关值，以便匹配到分组的前导码的签名。 如果低钳位值小于低钳位值，则低钳位值可以作为设置计算的相关值的地板。 如果超过相关阈值，则检查相关值以确定它是峰值。 如果找到峰值，则将前导码的功率与相对于无线电本底噪声的功率阈值进行比较。 如果超过功率阈值，则检测到正相关。 通道优化器用于消除频率偏移。 这使得能够使用近似等于输入信号的占用带宽的滤波器，进一步抑制噪声和干扰。

公开(公告)号：US11102050B2

公开(公告)日：2021-08-24

申请号：US16397976

申请日：2019-04-29

申请人： Itron, Inc.

发明人： Danny Ray Seely

IPC分类号： H04L27/36 ,  H04L1/00 ,  H04W72/04 ,  H04W52/36 ,  H04L27/38

摘要： Within a radio, a broadband digitizer is configured for channel assessment. In an example, a radio band is digitized to form a data stream. The data stream is channelized to form first and second in-phase in-quadrature (I/Q) sample streams. The first and second I/Q sample streams are provided to first and second channel assessors, respectively. Additionally, the first and second I/Q sample streams are bifurcated, to thereby provide the same first and second I/Q streams to first and second channel decoders, respectively. Accordingly, same portions of the first and second I/Q sample streams are presented to the first and second channel assessors and the first and second decoders, respectively, at the same time. Based at least in part on the channel assessments made by the channel assessors, a channel plan with less radio frequency noise may be selected.

公开(公告)号：US20200344013A1

公开(公告)日：2020-10-29

申请号：US16397997

申请日：2019-04-29

申请人： Itron, Inc.

发明人： Danny Ray Seely

IPC分类号： H04L1/20 ,  H04W28/02 ,  H04W28/04 ,  H04W24/08 ,  H04W52/20 ,  H04W16/22

摘要： Channel plan management enables a radio to select preferred channels within a potentially noisy radio frequency (RF) spectrum. In an example of RF spectrum analysis and channel plan management, a channel assessment tool analyzes RF spectrum, builds and maintains a database that include RF spectrum and/or channel information. In an example, a channel assessment tool (CAT) manager periodically collects the data from packet error rate (PER) estimators and resets them for a new collection interval. The CAT manager builds a statistical database for all channels. This database is used to identify the best channels over that collection period, which is then ultimately used to build a new channel plan. The CAT statistical database to generate a new active channel plan which is ultimately updated across many or all devices within a radio network.

公开(公告)号：US10218493B2

公开(公告)日：2019-02-26

申请号：US15443495

申请日：2017-02-27

申请人： Itron, Inc.

发明人： Danny Ray Seely ,  Junsong Lin ,  Michael David McNamee

IPC分类号： H04L12/24 ,  H04W40/00 ,  H04J3/22 ,  H04L12/26 ,  H04L7/04 ,  H04L1/00 ,  H04L1/20

摘要： In a radio using a plurality of channels defined in a radio frequency (RF) spectrum, a rate of false packet detections may be calculated for each of the plurality of channels using a plurality of respective correlation thresholds. The rate of false packet detections for each channel may be compared to a range of acceptable rates of false packet detections. The same or different ranges of acceptable rates of false packet detections may be used for each channel or each channel plan. Different correlation thresholds may be adjusted based at least in part on the comparisons. For example, if a rate of false packet detections exceeds a range of acceptable rates of false packet detections, the correlation threshold may be raised, or the reverse. A packet may be detected on different channels based on different adjusted correlation thresholds.

公开(公告)号：US20170104684A1

公开(公告)日：2017-04-13

申请号：US14879262

申请日：2015-10-09

申请人： ITRON, INC.

发明人： Danny Ray Seely ,  Michael David McNamee

IPC分类号： H04L12/851 ,  H04B1/06

CPC分类号： H04L47/2483 ,  H04B1/06 ,  H04L47/245 ,  H04W52/0229 ,  H04W52/0258 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/22 ,  Y02D70/26 ,  Y02D70/40

摘要： An example method of receiving a data packet includes receiving a data packet at a channel receiver of at least one channel receiver each associated with a channel, providing the data packet to a data packet identification block that corresponds to the channel receiver, validating the data packet at the data packet identification block, and providing the validated data packet to an available decoder block of at least one decoder block capable of performing one or more decoding functions, where a quantity of the decoder blocks is less than a quantity of the data packet identification blocks and optimized according to one or more goals. If no decoder block is available and the validated data packet is a higher priority data packet, a decoder block processing a lower priority data packet may be forced to stop processing the lower priority data packet and process the higher priority data packet.

公开(公告)号：US09900796B2

公开(公告)日：2018-02-20

申请号：US15222519

申请日：2016-07-28

申请人： Itron, Inc.

发明人： Danny Ray Seely

IPC分类号： H04L27/06 ,  H04W24/08 ,  H04W24/04

CPC分类号： H04W24/08 ,  H04W24/04

摘要： A decoder for a modulation scheme is configured to operate close to the radio noise floor. A correlation value may be constantly updated, in an effort to match to a signature to a preamble of a packet. A low clamp value may act as a floor to which a calculated correlation value is set, if it is less than the low clamp value. If a correlation threshold is exceeded, then the correlation value is examined to determine it is a peak value. If the peak is found, power of the preamble is compared to a power threshold that is relative to the radio noise floor. If the power threshold is exceeded, positive correlation is detected. A channel optimizer is used to remove the frequency misalignment. This enables the use of a filter that is approximately equal to the occupied bandwidth of the incoming signal, further rejecting noise and interference.

公开(公告)号：US09014307B2

公开(公告)日：2015-04-21

申请号：US13776548

申请日：2013-02-25

申请人： Itron, Inc.

发明人： Danny Ray Seely

IPC分类号： H04L27/06 ,  H04L1/00

CPC分类号： H04L1/0003 ,  H04L25/14 ,  H04L27/0008 ,  H04L27/12

摘要： A multichannel radio receiver may include a radio frequency (RF) subsystem and a digital subsystem. The RF subsystem may be configured to provide analog information associated with a radio band to an analog to digital converter (ADC). The ADC samples the analog input and sends digital output to the digital subsystem. The digital subsystem may be configured with one or more channelizers and one or more decoders. A channelizer within the digital subsystem may filter and re-sample the digital output to result in a channel plan having a desired bandwidth and a desired sample rate. The sample rate may be selected for compatibility with a decoder. The decoder may have design specifications based in part on a modulation scheme to be decoded. The design specifications may indicate the desired sample rate to be provided by the channelizer.

摘要翻译： 多通道无线电接收机可以包括射频（RF）子系统和数字子系统。 RF子系统可以被配置为向模数转换器（ADC）提供与无线电频带相关联的模拟信息。 ADC对模拟输入进行采样，并将数字输出发送到数字子系统。 数字子系统可以配置有一个或多个信道解码器和一个或多个解码器。 数字子系统内的信道化器可以对数字输出进行滤波和重新采样，以产生具有期望带宽和期望采样率的信道规划。 可以选择采样率以与解码器兼容。 解码器可以部分地基于待解码的调制方案来进行设计规范。 设计规范可以指示要由通道器提供的期望采样率。

公开(公告)号：US20140242931A1

公开(公告)日：2014-08-28

申请号：US13776505

申请日：2013-02-25

申请人： ITRON, INC.

发明人： Danny Ray Seely

IPC分类号： H04B15/00

CPC分类号： H04L27/0008 ,  H04L5/06 ,  H04L27/10

摘要： A multichannel radio receiver is configured to define at least two channel plans, each channel plan having at least one channel. The channel plans may differ due to channel bandwidths, channel locations, channel number and/or channel spacings. At least a portion of a radio spectrum may be common to at least two of the channel plans. At least two decoders may operate simultaneously to decode different modulation schemes on each of the at least two channel plans. In one example, two channel plans overlap portions of the radio spectrum. Two different and complementary modulation schemes are used on the two channel plans, respectively. The complementary modulation schemes reject signals associated with the other. Accordingly, portions of the radio spectrum are used simultaneously by at least two channel plans and at least two modulation schemes, respectively.

摘要翻译： 多通道无线电接收机被配置为定义至少两个信道计划，每个信道方案具有至少一个信道。 信道计划可能因信道带宽，信道位置，信道号和/或信道间隔而不同。 无线电频谱的至少一部分对于至少两个信道规划可能是共同的。 至少两个解码器可以同时操作以解码至少两个信道计划中的每一个上的不同调制方案。 在一个示例中，两个信道计划与无线电频谱的部分重叠。 两个不同的和互补的调制方案分别用于两个信道计划。 互补调制方案拒绝与另一个相关联的信号。 因此，无线电频谱的部分分别由至少两个信道计划和至少两个调制方案同时使用。