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    Method and system for managing digital to time conversion
    1.
    发明授权
    Method and system for managing digital to time conversion 有权
    用于管理数字到时间转换的方法和系统

    公开(公告)号：US08339295B2

    公开(公告)日：2012-12-25

    申请号：US11831465

    申请日：2007-07-31

    申请人： Geetha B. Nagaraj ,  Nicholas G. Cafaro ,  Ralf Hekmann ,  Robert E. Stengel ,  Scott Miller

    发明人： Geetha B. Nagaraj ,  Nicholas G. Cafaro ,  Ralf Hekmann ,  Robert E. Stengel ,  Scott Miller

    IPC分类号： H03M1/48

    CPC分类号： H03B21/02 ,  H03L7/0814

    摘要： A method and system for managing Digital to Time Conversion (DTC) is provided. The method comprises receiving a first Radio Frequency (RF) signal and a second RF signal. The second RF signal is a phase-shifted first RF signal. The method further comprises converting the first RF signal to a first Intermediate Frequency (IF) signal and the second RF signal to a second IF signal. Further, a time delay between the first IF signal and the second IF signal is estimated based on a time difference measurement technique. The second RF signal is processed based on the estimated time delay to compensate for a delay error associated with the second RF signal.

    摘要翻译： 提供了一种用于管理数字到时间转换（DTC）的方法和系统。 该方法包括接收第一射频（RF）信号和第二RF信号。 第二RF信号是相移的第一RF信号。 该方法还包括将第一RF信号转换为第一中频（IF）信号，将第二RF信号转换为第二IF信号。 此外，基于时差测量技术来估计第一IF信号与第二IF信号之间的时间延迟。 基于估计的时间延迟来处理第二RF信号以补偿与第二RF信号相关联的延迟误差。

    METHOD AND SYSTEM FOR MANAGING DIGITAL TO TIME CONVERSION
    2.
    发明申请
    METHOD AND SYSTEM FOR MANAGING DIGITAL TO TIME CONVERSION 有权
    用于管理数字到时间转换的方法和系统

    公开(公告)号：US20090033384A1

    公开(公告)日：2009-02-05

    申请号：US11831465

    申请日：2007-07-31

    申请人： Geetha B. Nagaraj ,  Nicholas G. Cafaro ,  Ralf Hekmann ,  Robert E. Stengel ,  Scott Miller

    发明人： Geetha B. Nagaraj ,  Nicholas G. Cafaro ,  Ralf Hekmann ,  Robert E. Stengel ,  Scott Miller

    IPC分类号： H03L7/06

    CPC分类号： H03B21/02 ,  H03L7/0814

    摘要： A method and system for managing Digital to Time Conversion (DTC) is provided. The method comprises receiving a first Radio Frequency (RF) signal and a second RF signal. The second RF signal is a phase-shifted first RF signal. The method further comprises converting the first RF signal to a first Intermediate Frequency (IF) signal and the second RF signal to a second IF signal. Further, a time delay between the first IF signal and the second IF signal is estimated based on a time difference measurement technique. The second RF signal is processed based on the estimated time delay to compensate for a delay error associated with the second RF signal.

    摘要翻译： 提供了一种用于管理数字到时间转换（DTC）的方法和系统。 该方法包括接收第一射频（RF）信号和第二RF信号。 第二RF信号是相移的第一RF信号。 该方法还包括将第一RF信号转换为第一中频（IF）信号，将第二RF信号转换为第二IF信号。 此外，基于时差测量技术来估计第一IF信号和第二IF信号之间的时间延迟。 基于估计的时间延迟来处理第二RF信号以补偿与第二RF信号相关联的延迟误差。

    Apparatus and method for scheduling tasks in a communications network
    3.
    发明申请
    Apparatus and method for scheduling tasks in a communications network 审中-公开
    用于在通信网络中调度任务的装置和方法

    公开(公告)号：US20060156304A1

    公开(公告)日：2006-07-13

    申请号：US10513646

    申请日：2003-04-02

    申请人： Francois Bourzeix ,  Ralf Hekmann

    发明人： Francois Bourzeix ,  Ralf Hekmann

    IPC分类号： G06F9/46

    CPC分类号： G06F9/4881

    摘要： A time trigger for instruction execution can be contained within the instruction itself. A time stamp value associated with each of a sequence of instructions, which are written into a FIFO memory (9) by an application specific controller (1), is compared with the output value of a counter (11). When the two values are equal, a comparator 10 sends a command to an instruction decoder (8) to execute the current instruction. The invention has the advantage of a reduced interrupt overhead and his particular application to HiperLAN 2 systems in which it can be incorporated without affecting the protocol handling.

    摘要翻译： 指令执行的时间触发可以包含在指令本身中。 与应用特定控制器（1）写入FIFO存储器（9）的指令序列中的每一个相关联的时间戳值与计数器（11）的输出值进行比较。 当两个值相等时，比较器10向指令解码器（8）发送命令以执行当前指令。 本发明具有减少的中断开销和他对HiperLAN 2系统的特定应用的优点，其中可以并入该系统，而不影响协议处理。

    System, method and apparatus for managing communication in a public safety communication network
    5.
    发明授权
    System, method and apparatus for managing communication in a public safety communication network 有权
    用于管理公共安全通信网络中的通信的系统，方法和装置

    公开(公告)号：US08300673B2

    公开(公告)日：2012-10-30

    申请号：US11844669

    申请日：2007-08-24

    申请人： Ralf Hekmann ,  Robert J. Corke ,  Trefor J. Delve ,  Daniel G. Prysby ,  Christopher G. Ware ,  Michael F. Zeleznik

    发明人： Ralf Hekmann ,  Robert J. Corke ,  Trefor J. Delve ,  Daniel G. Prysby ,  Christopher G. Ware ,  Michael F. Zeleznik

    IPC分类号： H04B1/00

    CPC分类号： H04B1/715 ,  H04B1/7136 ,  H04B2001/7154

    摘要： A method, system and apparatus for managing communication in a Public Safety Communication Network (PSCN). The PSCN includes a plurality of Mobile Stations (MSs) (110, 115, 120) and a master controller (105). The method includes initiating a communication between one or more MSs and the master controller using a primary channel (405). The primary channel corresponds to a primary frequency spectrum in the PSCN. The method further includes identifying one or more available channels in one or more of the primary frequency spectrum and a secondary frequency spectrum (410). Each of the primary frequency spectrum and the secondary frequency spectrum include one or more channels. Thereafter, a channel hopping pattern is generated for one or more MSs based on one or more available channels (415). The channel hopping pattern corresponds to a sequence of frequency hops for a MS.

    摘要翻译： 一种用于管理公共安全通信网络（PSCN）中的通信的方法，系统和装置。 PSCN包括多个移动站（MS）（110,115,120）和主控制器（105）。 该方法包括使用主信道（405）发起一个或多个MS与主控制器之间的通信。 主信道对应于PSCN中的主频谱。 该方法还包括识别一个或多个主频谱和次频谱中的一个或多个可用信道（410）。 主频谱和次频谱中的每一个包括一个或多个信道。 此后，基于一个或多个可用信道（415）为一个或多个MS生成信道跳频模式。 信道跳频模式对应于MS的跳频序列。

    Viterbi decoder, method and unit therefor
    6.
    发明授权
    Viterbi decoder, method and unit therefor 失效
    维特比解码器，方法和单元

    公开(公告)号：US07042964B2

    公开(公告)日：2006-05-09

    申请号：US10023543

    申请日：2001-12-17

    申请人： Markus Muck ,  Ralf Hekmann

    发明人： Markus Muck ,  Ralf Hekmann

    IPC分类号： H03D1/00 ,  H04L27/06

    CPC分类号： H03M13/6325 ,  H03M13/3961 ,  H03M13/3988 ,  H03M13/4107 ,  H03M13/6502 ,  H04L1/0054

    摘要： A Viterbi decoder includes a number of classical Add-Compare-Select units and a number of further Add-Compare-Select unit having a lower complexity butterfly unit (300) having only two adder means, such that the further Add-Compare-Select unit has a butterfly unit (300) comprising: first adder means (310) for receiving a first path metric and a branch metric and for producing at its output the addition thereof; and second adder means (320) for receiving a second path metric and said branch metric and for producing at its output the addition thereof. First comparator means (330) are coupled to receive the output of the second adder means and coupled to receive the first path metric for comparing therebetween. Second comparator means (340) are coupled to receive the output of the first adder means and coupled to receive the second path metric for comparing therebetween. First selection means (350) for selecting between the second adder means output and the first path metric produce a first survivor path metric in dependence on the first comparator means comparison. Second selection means (360) for selecting between the first adder means output and the second path metric signal produce a second survivor path metric in dependence on the second comparator means comparison. Only two adder means are used for processing metric transitions as a second branch metric is identified as having a value of zero.

    摘要翻译： 维特比解码器包括多个经典的加法比较选择单元和多个具有仅具有两个加法器装置的较低复杂性蝶形单元（300）的另外的加法比较选择单元，使得进一步的加法比选择单元 具有蝶形单元（300），包括：第一加法器装置（310），用于接收第一路径度量和分支度量，并在其输出端产生加法; 以及第二加法器装置（320），用于接收第二路径度量和所述分支度量，并用于在其输出端产生其相加。 第一比较器装置（330）被耦合以接收第二加法器装置的输出并被耦合以接收用于在它们之间比较的第一路径量度。 第二比较器装置（340）被耦合以接收第一加法器装置的输出并被耦合以接收用于在它们之间比较的第二路径量度。 用于在第二加法器装置输出和第一路径度量之间进行选择的第一选择装置（350）根据第一比较器装置比较产生第一幸存路径量度。 用于在第一加法器装置输出和第二路径度量信号之间进行选择的第二选择装置（360）根据第二比较器装置比较产生第二幸存路径量度。 只有两个加法器装置用于处理度量转换，因为第二分支度量被标识为具有零值。

    SYSTEM, METHOD AND APPARATUS FOR MANAGING COMMUNICATION IN A PUBLIC SAFETY COMMUNICATION NETWORK
    8.
    发明申请
    SYSTEM, METHOD AND APPARATUS FOR MANAGING COMMUNICATION IN A PUBLIC SAFETY COMMUNICATION NETWORK 有权
    用于管理公共安全通信网络中的通信的系统，方法和装置

    公开(公告)号：US20090052499A1

    公开(公告)日：2009-02-26

    申请号：US11844669

    申请日：2007-08-24

    申请人： Ralf Hekmann ,  Robert J. Corke ,  Trefor J. Delve ,  Daniel G. Prysby ,  Christopher G. Ware ,  Michael F. Zeleznik

    发明人： Ralf Hekmann ,  Robert J. Corke ,  Trefor J. Delve ,  Daniel G. Prysby ,  Christopher G. Ware ,  Michael F. Zeleznik

    IPC分类号： H04B1/50

    CPC分类号： H04B1/715 ,  H04B1/7136 ,  H04B2001/7154

    摘要： A method, system and apparatus for managing communication in a Public Safety Communication Network (PSCN). The PSCN includes a plurality of Mobile Stations (MSs) (110, 115, 120) and a master controller (105). The method includes initiating a communication between one or more MSs and the master controller using a primary channel (405). The primary channel corresponds to a primary frequency spectrum in the PSCN. The method further includes identifying one or more available channels in one or more of the primary frequency spectrum and a secondary frequency spectrum (410). Each of the primary frequency spectrum and the secondary frequency spectrum include one or more channels. Thereafter, a channel hopping pattern is generated for one or more MSs based on one or more available channels (415). The channel hopping pattern corresponds to a sequence of frequency hops for a MS.

    摘要翻译： 一种用于管理公共安全通信网络（PSCN）中的通信的方法，系统和装置。 PSCN包括多个移动站（MS）（110,115,120）和主控制器（105）。 该方法包括使用主信道（405）发起一个或多个MS与主控制器之间的通信。 主信道对应于PSCN中的主频谱。 该方法还包括识别一个或多个主频谱和次频谱中的一个或多个可用信道（410）。 主频谱和次频谱中的每一个包括一个或多个信道。 此后，基于一个或多个可用信道（415）为一个或多个MS生成信道跳频模式。 信道跳频模式对应于MS的跳频序列。