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    System and method for tracking vehicles and containers
    1.
    发明授权
    System and method for tracking vehicles and containers 有权
    跟踪车辆和集装箱的系统和方法

    公开(公告)号：US07755541B2

    公开(公告)日：2010-07-13

    申请号：US12028894

    申请日：2008-02-11

    申请人： David S. Wisherd ,  Robert W. Boyd ,  Tom Richardson ,  Santiago Romero ,  Michael A. Wohl

    发明人： David S. Wisherd ,  Robert W. Boyd ,  Tom Richardson ,  Santiago Romero ,  Michael A. Wohl

    IPC分类号： G01S5/14 ,  H04L12/58

    CPC分类号： G01S19/07 ,  G01S19/09

    摘要： A location system for tracking assets within a terminal includes a Differential Global Positioning System (DGPS) reference receiver within the terminal that receives GPS signals and generates DGPS correction data. In one aspect, a roving receiver unit is carried by an asset to be tracked within the terminal. It includes a GPS receiver that receives GPS signals and the DGPS correction data from the DGPS reference receiver. A tag transmitter transmits a wireless RF signal containing GPS location data based on received GPS signals and DGPS correction data. At least one access point is positioned within the terminal for receiving the wireless RF signal from the tag transmitter. A processor is operatively connected to the at least one access point for receiving GPS location data and determining a location of the asset to be tracked.

    摘要翻译： 用于跟踪终端内的资产的定位系统包括终端内的差分全球定位系统（DGPS）参考接收机，其接收GPS信号并产生DGPS校正数据。 在一个方面，粗纱接收机单元由在终端内跟踪的资产携带。 它包括GPS接收器，其接收来自DGPS参考接收机的GPS信号和DGPS校正数据。 标签发送器基于接收到的GPS信号和DGPS校正数据发送包含GPS位置数据的无线RF信号。 至少一个接入点位于终端内，用于从标签发射器接收无线RF信号。 处理器可操作地连接到所述至少一个接入点，用于接收GPS位置数据并确定要跟踪的资产的位置。

    SYSTEM AND METHOD FOR TRACKING VEHICLES AND CONTAINERS
    2.
    发明申请
    SYSTEM AND METHOD FOR TRACKING VEHICLES AND CONTAINERS 有权
    用于跟踪车辆和集装箱的系统和方法

    公开(公告)号：US20080191937A1

    公开(公告)日：2008-08-14

    申请号：US12028894

    申请日：2008-02-11

    申请人： David S. WISHERD ,  Robert W. Boyd ,  Tom Richardson ,  Santiago Romero ,  Michael A. Wohl

    发明人： David S. WISHERD ,  Robert W. Boyd ,  Tom Richardson ,  Santiago Romero ,  Michael A. Wohl

    IPC分类号： G01S5/14

    CPC分类号： G01S19/07 ,  G01S19/09

    摘要： A location system for tracking assets within a terminal includes a Differential Global Positioning System (DGPS) reference receiver within the terminal that receives GPS signals and generates DGPS correction data. In one aspect, a roving receiver unit is carried by an asset to be tracked within the terminal. It includes a GPS receiver that receives GPS signals and the DGPS correction data from the DGPS reference receiver. A tag transmitter transmits a wireless RF signal containing GPS location data based on received GPS signals and DGPS correction data. At least one access point is positioned within the terminal for receiving the wireless RF signal from the tag transmitter. A processor is operatively connected to the at least one access point for receiving GPS location data and determining a location of the asset to be tracked.

    摘要翻译： 用于跟踪终端内的资产的位置系统包括终端内的差分全球定位系统（DGPS）参考接收机，其接收GPS信号并产生DGPS校正数据。 在一个方面，粗纱接收机单元由在终端内跟踪的资产携带。 它包括GPS接收器，其接收来自DGPS参考接收机的GPS信号和DGPS校正数据。 标签发送器基于接收到的GPS信号和DGPS校正数据发送包含GPS位置数据的无线RF信号。 至少一个接入点位于终端内，用于从标签发射器接收无线RF信号。 处理器可操作地连接到所述至少一个接入点，用于接收GPS位置数据并确定要跟踪的资产的位置。

    SYSTEM, APPARATUS AND METHOD FOR LOCATING AND/OR TRACKING ASSETS
    3.
    发明申请
    SYSTEM, APPARATUS AND METHOD FOR LOCATING AND/OR TRACKING ASSETS 有权
    用于定位和/或追踪资产的系统，装置和方法

    公开(公告)号：US20080266131A1

    公开(公告)日：2008-10-30

    申请号：US12169742

    申请日：2008-07-09

    申请人： Tom Richardson ,  Santiago Romero ,  David S. Wisherd ,  Michael A. Wohl

    发明人： Tom Richardson ,  Santiago Romero ,  David S. Wisherd ,  Michael A. Wohl

    IPC分类号： G08B5/22

    CPC分类号： G01S19/09 ,  G01S19/07 ,  G01S19/14 ,  G01S19/48

    摘要： A system is provided for tracking an asset within a geographic area. The system includes an antenna mast supportable by, and extending upward from, an object configured to move or facilitate movement of the asset. The antenna mast is capable of supporting a plurality of wireless locating units of a plurality of geo-spatial positioning systems, which are configured to locate a respective one or more locating units, and thereby the asset, within the geographic area. The system also includes a controller positionable on the object and configured to control operation of the wireless locating units. The controller is further configured to direct transmission of data to a host via one of the locating units or another wireless transmitter, and in a manner that accounts for a wireless link between the respective locating unit or other wireless transmitter and the host.

    摘要翻译： 提供了用于跟踪地理区域内的资产的系统。 该系统包括可被配置为移动或促进资产的移动的物体支撑并向上延伸的天线桅杆。 天线桅杆能够支持多个地理 - 空间定位系统的多个无线定位单元，其被配置为在地理区域内定位相应的一个或多个定位单元，从而定位该资产。 该系统还包括可定位在对象上并被配置为控制无线定位单元的操作的控制器。 所述控制器还被配置成通过所述定位单元或另一无线发射机中的一个将所述数据直接传送到主机，并且以考虑到相应定位单元或其他无线发射机与所述主机之间的无线链路的方式。

    LCPC decoding methods and apparatus
    6.
    发明授权
    LCPC decoding methods and apparatus 有权
    LCPC解码方法和装置

    公开(公告)号：US08595569B2

    公开(公告)日：2013-11-26

    申请号：US12128516

    申请日：2008-05-28

    申请人： Tom Richardson ,  Hui Jin ,  Vladimir Novichkov

    发明人： Tom Richardson ,  Hui Jin ,  Vladimir Novichkov

    IPC分类号： G06F11/00

    CPC分类号： H04L1/0057 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/6513 ,  H03M13/6516 ,  H04L1/0045

    摘要： A flexible and relatively hardware efficient LDPC decoder is described. The decoder can be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the decoding process. Each command of a relatively simple control code used to describe the code structure can be stored and executed multiple times to complete the decoding of a codeword. Different codeword lengths are supported using the same set of control code instructions but with the code being implemented a different number of times depending on the codeword length. The decoder can switch between decoding codewords of different lengths, without the need to change the stored code description information, by simply changing a code lifting factor that is indicative of codeword length and is used to control the decoding process. When decoding codewords shorter than the maximum supported codeword length some block storage locations may go unused.

    摘要翻译： 描述了一种灵活且相对硬件有效的LDPC解码器。 该解码器可以用低于用于控制解码过程的代码结构的完全并行性的并行级别来实现。 用于描述代码结构的相对简单的控制代码的每个命令可以被多次存储和执行以完成码字的解码。 使用相同的一组控制码指令支持不同的码字长度，但是根据码字长度，代码被实现不同的次数。 解码器可以通过简单地改变表示码字长度的代码提升因子而不需要改变存储的代码描述信息来切换不同长度的解码码字，并用于控制解码过程。 当解码短于最大支持码字长度的码字时，一些块存储位置可能不被使用。

    LDPC encoding methods and apparatus
    8.
    发明授权
    LDPC encoding methods and apparatus 失效
    LDPC编码方法和装置

    公开(公告)号：US08533568B2

    公开(公告)日：2013-09-10

    申请号：US12050119

    申请日：2008-03-17

    申请人： Tom Richardson ,  Hui Jin

    发明人： Tom Richardson ,  Hui Jin

    IPC分类号： G11C29/00

    CPC分类号： H03M13/6508 ,  H03M13/116 ,  H03M13/118 ,  H03M13/611

    摘要： A flexible and relatively hardware efficient LDPC encoder is described. The encoder can be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the encoding process. Each command of a relatively simple microcode used to describe the code structure can be stored and executed multiple times to complete the encoding of a codeword. Different codeword lengths can be supported using the same set of microcode instructions but with the code being implemented a different number of times depending on the lifting factor selected to be used. The LDPC encoder can switch between encoding codewords of different lengths, without the need to change the stored code description information, by simply changing a code lifting factor used to control the encoding processes. When coding codewords shorter than the maximum supported codeword length some block storage locations and/or registers may go unused.

    摘要翻译： 描述了一种灵活且相对硬件高效的LDPC编码器。 编码器可以以小于平行度的水平来实现，该并行度小于用于控制编码过程的代码结构的完全并行性。 用于描述代码结构的相对简单的微代码的每个命令可以被多次存储和执行以完成代码字的编码。 可以使用相同的微代码指令集来支持不同的码字长度，但是根据所选择的使用的提升因子，代码被实现不同的次数。 LDPC编码器可以通过简单地改变用于控制编码处理的代码提升因子来切换不同长度的编码码字，而不需要改变存储的代码描述信息。 当编码比最大支持的码字长度短的码字时，一些块存储位置和/或寄存器可能不被使用。

    Efficient automatic repeat request methods and apparatus
    9.
    发明授权
    Efficient automatic repeat request methods and apparatus 有权
    高效的自动重复请求方法和装置

    公开(公告)号：US07813322B2

    公开(公告)日：2010-10-12

    申请号：US10780539

    申请日：2004-02-17

    申请人： Rajiv Laroia ,  Tom Richardson ,  Junyi Li

    发明人： Rajiv Laroia ,  Tom Richardson ,  Junyi Li

    IPC分类号： H04L1/00

    CPC分类号： H04L1/0057 ,  H04L1/1671 ,  H04L1/1692 ,  H04L1/1819 ,  H04L2001/125

    摘要： Different NAK signals are used to indicate different relative levels of success in regard to an unsuccessful attempt to decode a received signal. An ACK signal is used in the case of successful decoding. The device which generated and transmitted the original encoded signal receives the NAK signal and selects a portion of redundant information, e.g., additional error correction bits, to be transmitted based on the value of the NAK signal. If the NAK signal indicates a low level of decoding success indicating a relatively large number of errors in the decoded signal, a large set of redundant information is selected and transmitted. If the NAK signal indicates a relatively successful decoding, e.g., relatively few errors, a small set of redundant information is selected and transmitted. Where a small set of redundant information is transmitted new information can be transmitted with the redundant information.

    摘要翻译： 不同的NAK信号用于指示不成功尝试对接收到的信号进行解码的成功的相对水平。 在成功解码的情况下使用ACK信号。 生成并发送原始编码信号的装置接收NAK信号，并根据NAK信号的值选择要发送的冗余信息的一部分，例如附加的纠错位。 如果NAK信号表示在解码信号中指示相对大量错误的解码成功的低电平，则选择并发送大量冗余信息。 如果NAK信号指示相对成功的解码，例如相对较少的错误，则选择并发送一小组冗余信息。 在发送一小组冗余信息的情况下，可以用冗余信息传输新信息。

    Methods and apparatus related to composite beacon and wideband synchronization signaling
    10.
    发明授权
    Methods and apparatus related to composite beacon and wideband synchronization signaling 有权
    与复合信标和宽带同步信令相关的方法和装置

    公开(公告)号：US07801227B2

    公开(公告)日：2010-09-21

    申请号：US11486881

    申请日：2006-07-14

    申请人： Vladimir Parizhisky ,  Rajiv Laroia ,  Alexander Leonidov ,  Tom Richardson ,  Junyi Li ,  Sathyadev Venkata Uppala

    发明人： Vladimir Parizhisky ,  Rajiv Laroia ,  Alexander Leonidov ,  Tom Richardson ,  Junyi Li ,  Sathyadev Venkata Uppala

    IPC分类号： H04K1/00

    CPC分类号： H04L27/2613 ,  H04L5/023 ,  H04L27/2614 ,  H04L27/2655

    摘要： A composite signal includes a high power beacon signal and low power corresponding wideband synchronization signal and is communicated over a time interval exceeding a single OFDM transmission time interval. A base station transmits one or more different such composite broadcast signals in a recurring timing structure. Each different potential beacon signal, e.g., a single tone signal, is paired with a unique wideband synchronization signal. A wideband synchronization signal includes at least some predetermined null tones and at least some predetermined non-null tones. For a given wideband synchronization signal, the predetermined null tones carry predetermined modulation symbol values, A wireless terminal receives a composite signal, identifies a beacon, determines a corresponding known wideband synchronization signal, compares received to known wideband synchronization signals, and determines at least one of a timing adjustment, frequency adjustment and channel estimation.

    摘要翻译： 复合信号包括高功率信标信号和低功率对应的宽带同步信号，并且在超过单个OFDM传输时间间隔的时间间隔上传送。 基站以循环定时结构发送一个或多个不同的这种复合广播信号。 每个不同的潜在信标信号，例如单个音调信号，与唯一的宽带同步信号配对。 宽带同步信号至少包括一些预定的无效音调和至少一些预定的非空音调。 对于给定的宽带同步信号，预定的空音携带预定的调制符号值，A无线终端接收复合信号，识别信标，确定对应的已知宽带同步信号，将已接收的已知宽带同步信号进行比较，并确定至少一个 定时调整，频率调整和信道估计。