利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

9 条记录 (耗时 0.029 秒)

    Method and apparatus for secure communication in a digital two way radio protocol
    1.
    发明授权
    Method and apparatus for secure communication in a digital two way radio protocol 有权
    用于数字双向无线电协议中的安全通信的方法和装置

    公开(公告)号：US09326135B2

    公开(公告)日：2016-04-26

    申请号：US12034989

    申请日：2008-02-21

    申请人： Anthony Rodrigues ,  Stephen R. Carsello ,  Bradley J. Rainbolt

    发明人： Anthony Rodrigues ,  Stephen R. Carsello ,  Bradley J. Rainbolt

    IPC分类号： H04W12/02 ,  H04L29/06 ,  H04W12/04

    CPC分类号： H04W12/02 ,  H04L63/0428 ,  H04L63/18 ,  H04L2463/061 ,  H04L2463/081 ,  H04W12/04

    摘要： A method and apparatus for secure communication in a digital two way radio protocol is disclosed herein. The method includes the step of, at an originating radio, generating at least one control value (505). The method further includes the step of generating an encryption key based on the at least one control value and a personal identification code at the originating radio (510). The method further includes the steps of encrypting data traffic with the encryption key to provide encrypted data traffic at the originating radio (515), transmitting the at least one control value to at least one target radio (525), and transmitting the encrypted data traffic to the at least one target radio (530).

    摘要翻译： 本文公开了一种用于数字双向无线电协议中的安全通信的方法和装置。 该方法包括在始发无线电中产生至少一个控制值（505）的步骤。 该方法还包括基于起始无线电（510）处的至少一个控制值和个人识别码产生加密密钥的步骤。 该方法还包括以下步骤：利用加密密钥加密数据业务，以在始发无线电（515）处提供加密的数据业务，将至少一个控制值发送到至少一个目标无线电（525），以及发送加密的数据业务 到所述至少一个目标无线电（530）。

    Method and system of reducing collisions in an asynchronous communication system
    2.
    发明授权
    Method and system of reducing collisions in an asynchronous communication system 有权
    减少异步通信系统中的冲突的方法和系统

    公开(公告)号：US07460624B2

    公开(公告)日：2008-12-02

    申请号：US10803325

    申请日：2004-03-18

    申请人： Stephen R. Carsello ,  Bradley J. Rainbolt

    发明人： Stephen R. Carsello ,  Bradley J. Rainbolt

    IPC分类号： H03D1/04 ,  H04B1/10 ,  H04L1/00 ,  H04L25/08

    CPC分类号： H04L12/56 ,  H04W52/0229

    摘要： A method (60 or 70) and system of reducing collisions in an asynchronous communication system can include the steps at a transmitter (200) of generating (61) a set of known preamble waveforms and transmitting (64) at least one distinguishable preamble waveform based on an association with a call type and a receiver identifier. The method (70) can also include the steps at a receiver (300) of receiving (71) at least one preamble waveform among a set of different preamble waveforms which toggle between two symbol frequencies, the different preamble waveforms being distinguishable by at least having one among a different symbol frequency spacing and a different symbol toggling duty cycle. The method further includes the step of selecting (73) to decode a preamble waveform based on at least one among the different symbol frequency spacing and the different symbol toggling duty cycle.

    摘要翻译： 一种减少异步通信系统中的冲突的方法（60或70）和减少冲突的系统可以包括在发射机（200）处产生（61）一组已知前同步码波形的步骤，并发送（64）至少一个可区分前导波形 与呼叫类型和接收者标识符的关联。 方法（70）还可以包括在接收机（300）处接收（71）在一组不同前同步码波形之间的至少一个前导码波形的步骤，所述前同步码波形在两个符号频率之间切换，所述不同的前导码波形可通过至少具有 一个在不同的符号频率间隔和不同的符号切换占空比。 该方法还包括以下步骤：基于不同符号频率间隔和不同符号切换占空比中的至少一个来选择（73）解码前导波形。

    Interference estimation and scaling for efficient metric storage and interference immunity
    3.
    发明授权
    Interference estimation and scaling for efficient metric storage and interference immunity 有权
    用于有效度量存储和抗干扰的干扰估计和缩放

    公开(公告)号：US07050514B2

    公开(公告)日：2006-05-23

    申请号：US10640110

    申请日：2003-08-13

    申请人： Bradley J. Rainbolt ,  Stephen R. Carsello

    发明人： Bradley J. Rainbolt ,  Stephen R. Carsello

    IPC分类号： H03D1/00 ,  H04L23/02 ,  H04B15/00

    CPC分类号： H04B17/345 ,  H04B17/26

    摘要： A system, wireless device (402) and method receive a set of soft metrics (614) associated with a block of symbols during a predetermined time interval, use the set of soft metrics (614) to form an initial interference power estimate, form a moving-average estimate of interference power (616) corresponding to each predetermined time interval, and scale the set of soft metrics (614) according to the corresponding interference power estimate resulting in a set of scaled metrics (618). Then they limit the dynamic range of the set of scaled metrics (618), linearly quantize the limited metrics, and output the linearly quantized limited metrics (628) to a memory buffer. The size of the memory buffer containing the linearly quantized limited metrics (628) is smaller than the size of a memory buffer required to store the received soft metrics (614). The linearly quantized limited metrics (628) are then used as input to a decoder.

    摘要翻译： 系统，无线设备（402）和方法在预定时间间隔期间接收与符号块相关联的一组软度量（614），使用所述一组软度量（614）来形成初始干扰功率估计，形成 对每个预定时间间隔对应的干扰功率（616）的移动平均估计，以及根据导致一组缩放度量的对应的干扰功率估计（618）缩放软度量集合（614）。 然后，它们限制一组缩放度量（618）的动态范围，线性量化有限度量，并将线性量化的有限量度（628）输出到存储器缓冲器。 包含线性量化有限度量（628）的存储器缓冲器的大小小于存储所接收的软度量（614）所需的存储器缓冲器的大小。 线性量化的限制度量（628）然后被用作解码器的输入。

    Method and apparatus for facilitating efficient deinterleaving and diversity-combining of a data signal
    4.
    发明授权
    Method and apparatus for facilitating efficient deinterleaving and diversity-combining of a data signal 有权
    用于促进数据信号的有效解交织和分集组合的方法和装置

    公开(公告)号：US07123672B2

    公开(公告)日：2006-10-17

    申请号：US10426488

    申请日：2003-04-30

    申请人： Bradley J. Rainbolt ,  Stephen R. Carsello

    发明人： Bradley J. Rainbolt ,  Stephen R. Carsello

    IPC分类号： H04B7/10

    CPC分类号： H04L1/0071 ,  H04L1/04

    摘要： A processor (604) determines (502) a channel metric from a data signal received on a diversity branch. The processor calculates (504) an index into a final metrics buffer (702), the index determined from a position of the channel metric within an interleaved frame of data. The processor places (506) a value derived from the channel metric into the final metrics buffer at a location defined by the index. A corresponding method and apparatus as well as communications receiver utilizing the processor (604) are described.

    摘要翻译： 处理器（604）从分集分支上接收的数据信号确定（502）信道度量。 处理器将索引计算（504）到最终度量缓冲器（702）中，该索引是从交织的数据帧内的信道度量的位置确定的。 处理器将（506）将从信道度量导出的值放置在由索引定义的位置处的最终度量缓冲器中。 描述了相应的方法和设备以及利用处理器（604）的通信接收机。

    Method and apparatus for selecting scanning rates in a multi-mode communication device
    5.
    发明授权
    Method and apparatus for selecting scanning rates in a multi-mode communication device 有权
    用于在多模式通信设备中选择扫描速率的方法和装置

    公开(公告)号：US08055256B2

    公开(公告)日：2011-11-08

    申请号：US12130215

    申请日：2008-05-30

    申请人： Michael J. Rudowicz ,  Bradley J. Rainbolt

    发明人： Michael J. Rudowicz ,  Bradley J. Rainbolt

    IPC分类号： H04Q7/00

    CPC分类号： H04W48/16 ,  H04W52/0245 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/164

    摘要： A method and system for selecting scanning rates in a multi-mode communication device is disclosed herein. The method can include the step of—at a multi-mode communication device—measuring at least one parameter associated with an interaction between a first network and the multi-mode communication device. The method can further include the step of—in response to measuring the parameter—selecting a scanning rate of the multi-mode communication device for a second, different network that interacts with the multi-mode communication device. In the method, the first network and the second network can have independent synchronization procedures.

    摘要翻译： 本文公开了一种用于在多模式通信设备中选择扫描速率的方法和系统。 该方法可以包括在多模式通信设备中测量与第一网络和多模式通信设备之间的交互相关联的至少一个参数的步骤。 该方法还可以包括响应于测量与多模式通信设备交互的第二不同网络的参数选择多模式通信设备的扫描速率的步骤。 在该方法中，第一网络和第二网络可以具有独立的同步过程。

    Method and apparatus to enhance audio quality for digitized voice transmitted over a channel employing frequency diversity
    7.
    发明授权
    Method and apparatus to enhance audio quality for digitized voice transmitted over a channel employing frequency diversity 有权
    用于增强通过采用频率分集的信道传输的数字化语音的音频质量的方法和装置

    公开(公告)号：US06970519B2

    公开(公告)日：2005-11-29

    申请号：US10447933

    申请日：2003-05-29

    申请人： Bradley J. Rainbolt

    发明人： Bradley J. Rainbolt

    IPC分类号： G10L19/00 ,  H04B7/12 ,  H04L1/00 ,  H04L1/08 ,  H04L27/04

    CPC分类号： H04L1/0071 ,  G10L19/005 ,  H04B7/12 ,  H04L1/0041 ,  H04L1/0059 ,  H04L1/007 ,  H04L1/08

    摘要： Apparatus and corresponding method in a wireless mobile device (10) for classifying each of a plurality of audio bits obtained from a vocoder (104) into one class of a plurality of classes according to a predetermined importance of each audio bit, wherein each of the plurality of classes has an associated error correction process and an associated repeat diversity process. Error correction and repeat diversity are applied to a portion of the plurality of classes based on the associated error correction and repeat diversity processes. The method may be implemented by a processor (10) executing routines stored in a memory (110).

    摘要翻译： 一种无线移动设备（10）中的设备和相应方法，用于根据每个音频比特的预定重要性将从声码器（104）获得的多个音频比特中的每一个分类成多个类别，其中每个 多个类具有相关联的纠错处理和相关联的重复分集过程。 基于相关联的纠错和重复分集过程，将错误校正和重复分集应用于多个类的一部分。 该方法可以由执行存储在存储器（110）中的例程的处理器（10）来实现。

    Crypto-synchronization for secure communication
    8.
    发明授权
    Crypto-synchronization for secure communication 有权
    用于安全通信的加密同步

    公开(公告)号：US07715559B2

    公开(公告)日：2010-05-11

    申请号：US10926830

    申请日：2004-08-26

    申请人： Bradley J. Rainbolt ,  Marc A. Boillot

    发明人： Bradley J. Rainbolt ,  Marc A. Boillot

    IPC分类号： H04L1/00

    CPC分类号： H04L1/0061 ,  H04K1/00 ,  H04L1/0041 ,  H04L9/12

    摘要： An apparatus (213) and corresponding methods (FIG. 7) to facilitate maintaining crypto synchronization while processing communication signals in a communication unit includes a vocoder (215) configured to convert input audio band signals to vocoder output frames; a crypto processor (217) configured to encrypt the vocoder output frames to provide encrypted output frames; and a synchronizer (219) configured to substitute in a predetermined manner synchronization information corresponding to an encryption state of the crypto processor for a portion of the encrypted data in a portion of the encrypted output frames to provide resultant output synchronization frames suitable for synchronizing a decryption process at a target communication unit.

    摘要翻译： 在通信单元处理通信信号的同时，有助于保持加密同步的装置（213）和相应的方法（图7）包括配置成将输入音频信号转换为声码器输出帧的声码器（215） 密码处理器，被配置为加密所述声码器输出帧以提供加密的输出帧; 以及同步器（219），被配置为以预定方式替换与所述加密处理器的加密状态相对应的加密数据的一部分的加密输出帧的一部分的同步信息，以提供适合于同步解密的合成输出同步帧 在目标通信单元处理。