-
公开(公告)号：US20140242922A1
公开(公告)日：2014-08-28
申请号：US13776575
申请日：2013-02-25
Applicant: ITRON, INC.
Inventor： Danny Ray Seely
IPC: H04B15/00
CPC classification number: H04L27/0014 , H04L27/16 , H04L2027/003
Abstract: A radio includes a radio frequency (RF) subsystem to process analog information. A digital subsystem receives input from the RF subsystem, and may include a frequency error estimator and a transmitter. The frequency error estimator may be configured to receive samples from the digital subsystem and to estimate a frequency misalignment, between transmitter and receiver, of each of a plurality of received signals in real time. The transmitter may be configured to transmit to each of a plurality of downstream endpoints on frequencies based in part on the respective estimated frequency misalignments. Such transmissions, at a frequencies expected by each of the downstream endpoints, allows the use of narrower receiver filters by those endpoints. In one example, the plurality of received signals may be received simultaneously and be associated with packets of a plurality of different channel plans, with different channel bandwidths and/or channel spacing, and different channel modulation schemes.
Abstract translation: 无线电设备包括用于处理模拟信息的射频（RF）子系统。 数字子系统接收来自RF子系统的输入，并且可以包括频率误差估计器和发射机。 频率误差估计器可以被配置为从数字子系统接收采样并且实时地估计多个接收信号中的每一个的发射机和接收机之间的频率未对准。 发射机可以被配置为基于相应的估计的频率未对准部分地基于频率向多个下游端点中的每一个发送。 在由每个下游端点预期的频率下的这种传输允许由那些端点使用较窄的接收机滤波器。 在一个示例中，可以同时接收多个接收信号并且与具有不同信道带宽和/或信道间隔以及不同信道调制方案的多个不同信道规划的分组相关联。
-
公开(公告)号：US09252998B2
公开(公告)日：2016-02-02
申请号：US13776575
申请日：2013-02-25
Applicant: Itron, Inc.
Inventor： Danny Ray Seely
CPC classification number: H04L27/0014 , H04L27/16 , H04L2027/003
Abstract: A radio includes a radio frequency (RF) subsystem to process analog information. A digital subsystem receives input from the RF subsystem, and may include a frequency error estimator and a transmitter. The frequency error estimator may be configured to receive samples from the digital subsystem and to estimate a frequency misalignment, between transmitter and receiver, of each of a plurality of received signals in real time. The transmitter may be configured to transmit to each of a plurality of downstream endpoints on frequencies based in part on the respective estimated frequency misalignments. Such transmissions, at a frequencies expected by each of the downstream endpoints, allows the use of narrower receiver filters by those endpoints. In one example, the plurality of received signals may be received simultaneously and be associated with packets of a plurality of different channel plans, with different channel bandwidths and/or channel spacing, and different channel modulation schemes.
Abstract translation: 无线电设备包括用于处理模拟信息的射频（RF）子系统。 数字子系统接收来自RF子系统的输入，并且可以包括频率误差估计器和发射机。 频率误差估计器可以被配置为从数字子系统接收采样并且实时地估计多个接收信号中的每一个的发射机和接收机之间的频率未对准。 发射机可以被配置为基于相应的估计的频率未对准部分地基于频率向多个下游端点中的每一个发送。 在由每个下游端点预期的频率下的这种传输允许由那些端点使用较窄的接收机滤波器。 在一个示例中，可以同时接收多个接收信号并且与具有不同信道带宽和/或信道间隔以及不同信道调制方案的多个不同信道规划的分组相关联。
-
公开(公告)号：US08958506B2
公开(公告)日：2015-02-17
申请号：US13776587
申请日：2013-02-25
Applicant: Itron, Inc.
Inventor： Danny Ray Seely
CPC classification number: H04L7/042 , H04L7/10 , H04L27/1566 , H04L27/16 , H04L27/2335 , H04L2027/003 , H04L2027/0046 , H04L2027/0065 , H04L2027/0085
Abstract: 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.
Abstract translation: 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：US08934532B2
公开(公告)日：2015-01-13
申请号：US13776505
申请日：2013-02-25
Applicant: Itron, Inc.
Inventor： Danny Ray Seely
CPC classification number: H04L27/0008 , H04L5/06 , H04L27/10
Abstract: 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.
Abstract translation: 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。
-
公开(公告)号：US08913701B2
公开(公告)日：2014-12-16
申请号：US13776476
申请日：2013-02-25
Applicant: Itron, Inc.
Inventor： Danny Ray Seely
CPC classification number: H04L27/0008 , H04L5/06 , H04L27/10 , H04L2027/0095
Abstract: A radio may define a channel plan to include one or more channels, and each channel may include a plurality of overlapping filters. Each filter may overlap at least one other filter, such as by an expected bandwidth of an incoming signal. The overlapping filters may extend over a frequency range based in part on an expected frequency error of the incoming signal. Due in part to the overlapping nature of the filters, the incoming signal will be within at least one of the filters. Since only one of the filters must receive the incoming signal, the filters may be narrower than might otherwise be the case, particularly in an application that includes frequency error. Accordingly, the filters may be narrower than their respective channels, and therefore receive less noise and interference. This improves signal-to-noise and improves the quality of the link and range.
Abstract translation: 无线电可以定义包括一个或多个信道的信道规划，并且每个信道可以包括多个重叠的过滤器。 每个滤波器可以与至少一个其他滤波器重叠，例如与输入信号的期望带宽重叠。 重叠滤波器可以部分地基于输入信号的预期频率误差而在频率范围上延伸。 部分由于滤波器的重叠性质，输入信号将在至少一个滤波器内。 由于只有一个滤波器必须接收输入信号，所以滤波器可能比其他情况更窄，特别是在包含频率误差的应用中。 因此，滤波器可能比其相应的信道更窄，因此接收到更少的噪声和干扰。 这提高了信噪比，提高了链路和范围的质量。
-
Patent Agency Ranking
公开(公告)号：US20140241469A1
公开(公告)日：2014-08-28
申请号：US13776562
申请日：2013-02-25
Applicant: ITRON, INC.
Inventor： Danny Ray Seely , Michael David McNamee
IPC: H04L1/00
CPC classification number: H04L1/0003 , H04L25/14 , H04L27/0008 , H04L27/12
Abstract: A multichannel radio receiver may include a radio frequency (RF) subsystem and a digital subsystem. The digital subsystem may be configured to use an analog to digital converter (ADC) to sample input. A channelizer bank within the digital subsystem may include a plurality of channelizers. Each channelizer may receive and translate input into a plurality of channels, the channels having widths that are non-uniform and/or spacing (e.g., spacing center-to-center of adjacent channels) that is not regular. The translation may include re-sampling channels at a rate associated with a modulation scheme. A decoder bank may include a plurality of decoders operating in parallel, each to receive input from a channelizer and each associated with a particular modulation scheme. Thus, the multichannel radio may simultaneously receive on a plurality of channels of arbitrary location, arbitrary spacing and/or arbitrary bandwidth, wherein each channel is associated with one of a plurality of modulation schemes.
Abstract translation: 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。 数字子系统可以被配置为使用模数转换器（ADC）来采样输入。 数字子系统内的信道化器组可以包括多个信道化器。 每个信道发送器可以接收并将输入转换成多个信道，信道具有不规则的不均匀和/或间隔（例如，相邻信道的中心到中心的间隔）的宽度。 转换可以包括以与调制方案相关联的速率的重新采样信道。 解码器组可以包括并行操作的多个解码器，每个解码器接收来自信道化器的输入，并且每个解码器与特定调制方案相关联。 因此，多信道无线电可以同时在任意位置，任意间隔和/或任意带宽的多个信道上接收，其中每个信道与多个调制方案之一相关联。
-
公开(公告)号：US12040895B1
公开(公告)日：2024-07-16
申请号：US18069575
申请日：2022-12-21
Applicant: ITRON, INC.
Inventor： Thomas F. Uhling , Keith Wayne Barnes , Danny Ray Seely
IPC: H04L1/00
CPC classification number: H04L1/0045 , H04L1/0006 , H04L1/0041 , H04L1/0048 , H04L1/0056 , H04L1/0057 , H04L1/0059 , H04L1/0078
Abstract: Various embodiments disclosed herein provide techniques for deciding when to use FEC to transmit a message between node devices in a mesh network. In various embodiments, a method includes receiving, by a communication application executing on a first node of a mesh network, a message; determining, by the communication application, a second node in the mesh network to transmit the message to, the second node being a neighbor of the first node; determining, by the communication application based on a history of forward error correction (FEC) and non-FEC transmissions with the second node, that FEC or non-FEC should be used to transmit the message; and transmitting, by the communication application, in response to determining that FEC or non-FEC should be used to transmit the message, the message to the second node using FEC or non-FEC.
-
公开(公告)号：US11075721B2
公开(公告)日：2021-07-27
申请号：US16397997
申请日：2019-04-29
Applicant: Itron, Inc.
Inventor： Danny Ray Seely
Abstract: 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：US20200344107A1
公开(公告)日：2020-10-29
申请号：US16397976
申请日：2019-04-29
Applicant: Itron, Inc.
Inventor： Danny Ray Seely
Abstract: 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：US20180248681A1
公开(公告)日：2018-08-30
申请号：US15443495
申请日：2017-02-27
Applicant: Itron, Inc.
Inventor： Danny Ray Seely , Junsong Lin , Michael David McNamee
CPC classification number: H04L7/042 , H04L1/0045 , H04L1/203 , H04L43/0823 , H04L43/16
Abstract: 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.
-
-
-
-
-
-
-
-
-
Search Results
25
records
(took 0.026 seconds)
