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公开(公告)号：US08856632B2
公开(公告)日：2014-10-07
申请号：US13422333
申请日：2012-03-16
申请人： Kenneth Hann , Mikko Laulainen
发明人： Kenneth Hann , Mikko Laulainen
摘要： A device for controlling frequency synchronization includes a processor for controlling a phase-controlled clock signal to achieve phase-locking with a reference clock signal, and for controlling a frequency-controlled clock signal so as to achieve frequency-locking with the reference clock signal. The processor is also configured to monitor a deviation between the frequency and phase-controlled clock signals, detect a change of circumstances such as temperature changes causing frequency drifting of the frequency-controlled clock signal, and replace or correct the frequency-controlled clock signal with, or on the basis of, the phase-controlled clock signal when both the monitored deviation and the detected change of circumstances show correlation confirming frequency drift of the frequency-controlled clock signal.
摘要翻译： 一种用于控制频率同步的装置包括一个处理器，用于控制相位控制的时钟信号以通过参考时钟信号实现锁相，并且用于控制频率控制的时钟信号，以便利用参考时钟信号实现频率锁定。 处理器还被配置为监视频率和相位控制的时钟信号之间的偏差，检测出导致频率漂移的频率控制时钟信号的温度变化等情况的变化，以及更换或校正频率控制的时钟信号 ，或者基于相位控制的时钟信号，当监视的偏差和检测到的环境变化都显示相关确认频率控制的时钟信号的频率漂移时。
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2.发明授权公开(公告)号：US09213317B2
公开(公告)日：2015-12-15
申请号：US12254361
申请日：2008-10-20
申请人： Mikko Laulainen , Kenneth Hann
发明人： Mikko Laulainen , Kenneth Hann
CPC分类号： G04G7/00 , H04J3/0658 , H04J3/0667 , H04W56/0035 , H04W56/0055
摘要： The invention relates to transferring of a time of day value between network elements of a data transfer network. It has been surprisingly detected that the phase reference signals available to various network elements can be utilized in the synchronization of time of day values between these network elements. In the solution according to the invention, a first network element sends to a second network element a difference variable (401, 402, 403) that indicates how much the timing phase of the time of day value maintained in the first network element differs from the timing phase of the phase reference signal available to the first network element. In the second network element that receives the message, an estimate of the time of day value is formed (404, 405) based on the difference variable and the timing phase of the phase reference signal available to the second network element.
摘要翻译： 本发明涉及在数据传送网络的网元之间传送时间值。 惊奇地发现，可以在各种网络元件之间的时间值的同步中使用可用于各种网络元件的相位参考信号。 在根据本发明的解决方案中，第一网络元件向第二网络元件发送一个差异变量（401,402,403），该差异变量指示在第一网元中保持的时间值的定时相位与 相位参考信号的定时相位可用于第一网络元件。 在接收到该消息的第二网元中，基于第二网元可用的差分变量和相位参考信号的定时相位，形成时间值估计（404,405）。
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公开(公告)号：US08279859B2
公开(公告)日：2012-10-02
申请号：US12128008
申请日：2008-05-28
申请人： Kenneth Hann , Heikki Laamanen , Mikko Laulainen
发明人： Kenneth Hann , Heikki Laamanen , Mikko Laulainen
IPC分类号： H04L12/66
CPC分类号： H04L7/0008 , H04J1/00
摘要： A method and arrangement for transferring synchronizing information in a data transmission system includes modem connections. The arrangement includes a modulator (207) arranged to generate an analog signal (222) modulated by synchronizing information, the frequency spectrum of the signal being located in a frequency range that falls outside the data transmission bands of the modem line connected to the network element. The arrangement includes a switching circuit (208) arranged to connect the analog signal to a data transmission cable (206) that forms part of the modem line connected to a network element. The arrangement includes a second switching circuit (209) arranged to receive the analog signal from a data transmission cable that forms part of the modem line connected to the second network element. The arrangement also includes a regenerator (209-arranged to regenerate the synchronizing information from the analog signal.
摘要翻译： 用于在数据传输系统中传送同步信息的方法和装置包括调制解调器连接。 该装置包括：调制器（207），被配置为产生通过同步信息调制的模拟信号（222），该信号的频谱位于与连接到网络元件的调制解调器线路的数据传输频带之外的频率范围内 。 该装置包括一个开关电路（208），被配置为将模拟信号连接到形成连接到网络元件的调制解调器线路的一部分的数据传输电缆（206）。 该装置包括第二切换电路（209），其被布置为从形成连接到第二网络元件的调制解调器线路的一部分的数据传输电缆接收模拟信号。 该装置还包括再生器（209-布置成从模拟信号再生同步信息）。
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4.发明授权公开(公告)号：US07756165B2
公开(公告)日：2010-07-13
申请号：US11898839
申请日：2007-09-17
申请人： Kenneth Hann , Mikko Laulainen
发明人： Kenneth Hann , Mikko Laulainen
IPC分类号： H04J3/07
CPC分类号： H04L12/6418 , H04L47/22 , H04L49/9094
摘要： The invention relates to producing data traffic where the time intervals between successive data frames follow a predetermined probability distribution. In the present invention, it is surprisingly discovered that a time interval of a desired length between successive data frames can be produced by setting a certain bit quantity of digital stuffing data, defined on the basis of the target length of the time interval target, in a buffer memory (101), where successive data frames are waiting to be transmitted. The digital stuffing data is set in the buffer memory (101), so that the stuffing data is, in the read-out order, located between successive data frames.
摘要翻译： 本发明涉及产生数据业务，其中连续数据帧之间的时间间隔遵循预定的概率分布。 在本发明中，令人意外地发现，可以通过将基于时间间隔目标的目标长度定义的数字填充数据的特定比特量设置在连续数据帧中的期望长度的时间间隔 缓冲存储器（101），其中连续数据帧正在等待发送。 数字填充数据被设置在缓冲存储器（101）中，使得填充数据以读出顺序位于连续的数据帧之间。
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公开(公告)号：US20080101514A1
公开(公告)日：2008-05-01
申请号：US11907810
申请日：2007-10-17
申请人： Mikko Laulainen , Kenneth Hann , Jorma Kausiala
发明人： Mikko Laulainen , Kenneth Hann , Jorma Kausiala
IPC分类号： H04L7/00
CPC分类号： H04J3/0661 , H04J3/065 , H04J3/0667
摘要： The invention relates to a method and an arrangement for transferring timing messages in a digital data transfer system. In a solution according to the invention a timing message is transferred (101, 102, 103) within control data carried in a protocol data unit. The timing message is dependent on a transmission moment of the protocol data unit from a network element of the digital data transfer system. The control data is either a synchronization status message (Ethernet-SSM) carried in an Ethernet-frame, an overhead (OH) of a Synchronous Optical Network-frame (SONET), or an overhead (OH) of a Synchronous Digital Hierarchy-frame (SDH). Therefore, the number of such protocol data units that are dedicated only for timing purposes can be reduced.
摘要翻译： 本发明涉及用于在数字数据传输系统中传送定时消息的方法和装置。 在根据本发明的解决方案中，在协议数据单元中携带的控制数据内传送定时消息（101,102,103）。 定时消息取决于来自数字数据传输系统的网络元件的协议数据单元的传输时刻。 控制数据是以太网帧中承载的同步状态消息（Ethernet-SSM），同步光网络帧（SONET）的开销（OH）或同步数字体系框架的开销（OH） （SDH）。 因此，可以减少专用于定时目的的协议数据单元的数量。
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公开(公告)号：US08806261B2
公开(公告)日：2014-08-12
申请号：US13419478
申请日：2012-03-14
CPC分类号： H04J3/0664 , H04L7/08
摘要： A device for controlling a clock signal generator includes a processor (101) for forming at least two mutually different control quantities on the basis of reception moments of timing messages such as time stamps, where the reception moments are expressed as time values based on a first clock signal and the timing messages are transmitted in accordance with a second clock signal. The processor also calculates a weighted sum of the control quantities, and controls the clock signal generator with the weighted sum so as to synchronize the first clock signal and the second clock signal. The control quantities may represent, for example, a filtered value of observed phase-errors, a phase-error corresponding to a minimum observed transfer delay, and phase-errors corresponding to a given portion of the delay distribution. Using the weighted sum of the mutually different control quantities improves the utilization of the information content of the timing messages.
摘要翻译： 用于控制时钟信号发生器的装置包括：处理器（101），用于基于诸如时间戳的定时消息的接收时刻形成至少两个相互不同的控制量，其中接收时刻表示为基于第一 时钟信号和定时消息根据第二时钟信号发送。 处理器还计算控制量的加权和，并且以加权和控制时钟信号发生器，以使第一时钟信号和第二时钟信号同步。 控制量可以表示例如观察到的相位误差的滤波值，对应于最小观察到的传输延迟的相位误差，以及对应于延迟分布的给定部分的相位误差。 使用相互不同的控制量的加权和提高了定时消息的信息内容的利用率。
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公开(公告)号：US07995623B2
公开(公告)日：2011-08-09
申请号：US11949845
申请日：2007-12-04
申请人： Kenneth Hann , Heikki Laamanen , Mikko Laulainen
发明人： Kenneth Hann , Heikki Laamanen , Mikko Laulainen
CPC分类号： H04J3/0664
摘要： A method and system for adjusting a clock signal in a network element of a data network adjusts the clock signal based on difference values formed by received synchronizing messages. Each difference value is a difference of a reception and transmission values of a received synchronizing message. The reception value depends on a cumulated number of periods of the clock signal at a moment of arrival of the synchronizing message. The transmission value depends on a position of the synchronizing message in a chronological transmission order of synchronizing messages. When adjusting, an adjusting effect of the difference values belonging to a lower part of a margin of fluctuation of the difference values is weighted more heavily than that of an upper part. Thus, for clock signal adjustment, that share of information represented by the received synchronizing messages that has the least interference is used, irrespective of the data network load.
摘要翻译： 用于调整数据网络的网络元件中的时钟信号的方法和系统基于由接收到的同步消息形成的差值来调整时钟信号。 每个差值是接收到的同步消息的接收和发送值的差。 接收值取决于同步消息到达时刻的时钟信号的累积数量。 发送值取决于同步消息的位置，按同步消息的时间顺序传输顺序。 当调整时，属于差值的波动余量的下部的差值的调整效果比上部的加权更大。 因此，对于时钟信号调整，使用由接收到的具有最小干扰的同步消息表示的信息份额，而不管数据网络负载如何。
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公开(公告)号：US09088376B2
公开(公告)日：2015-07-21
申请号：US11907810
申请日：2007-10-17
申请人： Mikko Laulainen , Kenneth Hann , Jorma Kausiala
发明人： Mikko Laulainen , Kenneth Hann , Jorma Kausiala
IPC分类号： H04J3/06
CPC分类号： H04J3/0661 , H04J3/065 , H04J3/0667
摘要： The invention relates to a method and a system for transferring timing messages in a digital data transfer system. In a solution according to the invention a timing message is transferred (101, 102, 103) within control data carried in a protocol data unit. The timing message is dependent on a transmission moment of the protocol data unit from a network element of the digital data transfer system. The control data is a synchronization status message (Ethernet-SSM) carried in an Ethernet-frame. Therefore, the number of such protocol data units that are dedicated only for timing purposes can be reduced.
摘要翻译： 本发明涉及一种用于在数字数据传输系统中传送定时消息的方法和系统。 在根据本发明的解决方案中，在协议数据单元中携带的控制数据内传送定时消息（101,102,103）。 定时消息取决于来自数字数据传输系统的网络元件的协议数据单元的传输时刻。 控制数据是以太网帧中承载的同步状态消息（Ethernet-SSM）。 因此，可以减少专用于定时目的的协议数据单元的数量。
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公开(公告)号：US07864813B2
公开(公告)日：2011-01-04
申请号：US12475985
申请日：2009-06-01
IPC分类号： H04J3/06
CPC分类号： H04L43/0852 , H04J3/0667 , H04L43/50
摘要： The invention relates to determining a quantity to be measured from a communication system, such as a transmission delay or the phase difference of clock times. Measurement messages are transmitted (501, 502) between the two areas of the communication system in both transmission directions. Values of the time difference are calculated (503) for the measurement messages transmitted in at least one of the transmission directions, each of which values is the difference between the instant of reception measured at the reception and the instant of transmission measured at the transmission of the measurement message. The values of the time difference are used to calculate (504) an estimate of the distribution of the time difference, on the basis of which an estimate of the minimum value of the time difference is calculated (504).
摘要翻译： 本发明涉及从通信系统确定要测量的数量，例如传输延迟或时钟时间的相位差。 测量消息在两个传输方向上在通信系统的两个区域之间传送（501,502）。 对于在至少一个发送方向上发送的测量消息，计算时差的值（503），其中每个传输方向的值是接收时测量的接收时刻与发送时测量的发送时刻之间的差 测量消息。 使用时差的值来计算（504）时间差分布的估计，基于该时间差的最小值的估计（504）。
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公开(公告)号：US08611485B2
公开(公告)日：2013-12-17
申请号：US13477399
申请日：2012-05-22
申请人： Kenneth Hann , Mikko Laulainen
发明人： Kenneth Hann , Mikko Laulainen
IPC分类号： H04L7/02
CPC分类号： H04J3/0664 , H03L7/08
摘要： A device for controlling frequency synchronization includes a processor for controlling a frequency-controlled clock signal on the basis of received timing messages so as to achieve frequency-locking between the frequency-controlled clock signal and a reference clock signal. For the purpose of finding such timing messages which have experienced similar transfer delays and thus are suitable for the frequency control, the processor is configured to control a phase-controlled clock signal on the basis of the timing messages so as to achieve phase-locking between the phase-controlled clock signal and the reference clock signal, and to select the timing messages to be used for the frequency control on the basis of phase-error indicators related to the phase control. Thus, the phase-controlled clock signal is an auxiliary clock signal that is utilized for performing the frequency control.
摘要翻译： 用于控制频率同步的装置包括：处理器，用于基于接收到的定时消息来控制频率控制的时钟信号，以便实现频率控制的时钟信号和参考时钟信号之间的频率锁定。 为了找到已经经历类似的传输延迟并因此适合于频率控制的定时消息，处理器被配置为基于定时消息来控制相位控制的时钟信号，以便实现相位锁定 相位控制时钟信号和参考时钟信号，并且基于与相位控制相关的相位误差指示来选择要用于频率控制的定时消息。 因此，相位控制时钟信号是用于执行频率控制的辅助时钟信号。
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