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1. 发明申请

US20070195830A1 Method for insertion of time stamp into real time data within a wireless communications network 有权
标题翻译：将时间戳插入无线通信网络内的实时数据的方法
公开(公告)号：US20070195830A1
公开(公告)日：2007-08-23
申请号：US11785019
申请日：2007-04-13
申请人： John Lorek , David Dworkin
发明人： John Lorek , David Dworkin
IPC分类号： H04J3/06
CPC分类号： H04N21/4305 , H04J3/0685 , H04L12/2801
摘要： A system for adding a time stamp to transmission traffic on a wireless network comprises a front end processor that receives a packet from the network and generates a Start Of Frame pulse and a LENGTH field corresponding to a length of the packet. A time stamp generator generates a time stamp by sampling the system master time counter. A synchronizer receives the SOF pulse and the LENGTH field from the front end processor, and generates a control signal. A multiplexer inputs the packet from the front end processor, the control signal and the time stamp, and outputs a modified packet with a field in the packet replaced by the time stamp.
摘要翻译：用于向无线网络上的传输业务添加时间标记的系统包括：前端处理器，其从网络接收分组，并产生对应于分组长度的起始帧脉冲和长度字段。时间戳生成器通过对系统主时间计数器进行采样来生成时间戳。同步器从前端处理器接收SOF脉冲和LENGTH字段，并产生控制信号。多路复用器输入来自前端处理器的分组，控制信号和时间戳，并且输出具有由时间戳替换的分组中的字段的修改的分组。

2. 发明申请

US20060182148A1 Method and apparatus for the synchronization of multiple cable modern termination system devices 失效
标题翻译：多电缆现代终端系统设备同步的方法和装置
公开(公告)号：US20060182148A1
公开(公告)日：2006-08-17
申请号：US11392806
申请日：2006-03-30
申请人： Anders Hebsgaard , David Dworkin , Lisa Denney , Robert Lee , Thomas Quigley
发明人： Anders Hebsgaard , David Dworkin , Lisa Denney , Robert Lee , Thomas Quigley
IPC分类号： H04J3/06
CPC分类号： H04L25/03343 , H04B1/1036 , H04J3/0664 , H04J3/067 , H04J3/0682 , H04L12/2801 , H04L2025/03808
摘要： A plurality of CMTS devices are linked together and synchronized to facilitate communication between the respective CMTS devices and respective downstream cable modems. According to one embodiment of the invention, one of the CMTS devices is designated as a master device, and the other CMTS devices are designated as slave devices. The respective CMTS devices are connected to each other by means of a synchronization bus. The master CMTS device then generates and broadcasts a future time stamp value, which is received by the respective slave CMTS devices. When the time stamp counter in the master CMTS device reaches the transmitted value, a control signal is broadcast over the synchronization bus. The slave CMTS devices then retrieve the time stamp value and reset their respective local time stamp counters to the received value. In this manner, the CMTS devices are synchronized.
摘要翻译：多个CMTS设备被链接在一起并被同步以促进各个CMTS设备和相应的下游电缆调制解调器之间的通信。根据本发明的一个实施例，CMTS设备中的一个被指定为主设备，并且其他CMTS设备被指定为从设备。相应的CMTS设备通过同步总线相互连接。然后，主CMTS设备生成并广播由相应从属CMTS设备接收的将来的时间戳值。当主CMTS设备中的时间戳计数器达到发送值时，通过同步总线广播控制信号。从属CMTS设备然后检索时间戳值并将其各自的本地时间戳计数器重置为接收的值。以这种方式，CMTS设备被同步。

3. 发明申请

US20070140209A1 Methods for the synchronization of multiple base stations in a wireless communication system 有权
标题翻译：无线通信系统中多个基站同步的方法
公开(公告)号：US20070140209A1
公开(公告)日：2007-06-21
申请号：US11701509
申请日：2007-02-02
申请人： Anders Hebsgaard , David Dworkin , Lisa Denney , Robert Lee , Thomas Quigley
发明人： Anders Hebsgaard , David Dworkin , Lisa Denney , Robert Lee , Thomas Quigley
IPC分类号： H04J3/00
CPC分类号： H04L25/03343 , H04B1/1036 , H04J3/0664 , H04J3/067 , H04J3/0682 , H04L12/2801 , H04L2025/03808
摘要： A plurality of base station devices are linked together and synchronized to facilitate communication between the respective base station devices and respective downlink subscriber stations. According to one embodiment of the invention, one of the base station devices is designated as a master device, and the other base station devices are designated as slave devices. The respective base station devices are connected to each other by means of a synchronization bus. The master base station device then generates and broadcasts a future time stamp value, which is received by the respective slave base station devices. When the time stamp counter in the master base station device reaches the transmitted value, a control signal is broadcast over the synchronization bus. The slave base station devices then retrieve the time stamp value and reset their respective local time stamp counters to the received value. In this manner, the base station devices are synchronized.
摘要翻译：多个基站设备被链接在一起并被同步以便于各个基站设备和相应的下行链路用户站之间的通信。根据本发明的一个实施例，基站设备之一被指定为主设备，而其它基站设备被指定为从设备。各个基站装置通过同步总线相互连接。主基站装置然后生成并广播由各个从基站装置接收的未来时间戳值。当主基站装置中的时间戳计数器达到发送值时，通过同步总线广播控制信号。然后，从基站设备检索时间戳值并将其各自的本地时间戳计数器重置为接收的值。以这种方式，基站装置同步。

4. 发明申请

US20070140302A1 System for real-time change of slot duration within a wireless network 有权
标题翻译：用于在无线网络内实时更改插槽持续时间的系统
公开(公告)号：US20070140302A1
公开(公告)日：2007-06-21
申请号：US11543050
申请日：2006-10-05
申请人： David Dworkin , Niki Pantelias , Son Nguyen , Yushan Lu
发明人： David Dworkin , Niki Pantelias , Son Nguyen , Yushan Lu
IPC分类号： H04J3/00
CPC分类号： H04L12/2801
摘要： A supervisory communications device, such as a base station within a wireless network, monitors and controls communications with a plurality of remote communications devices, such as mobile nodes, throughout a widely distributed network, including the Internet. The supervisory device establishes the upstream slot structure and allocates upstream bandwidth by sending messages over its downstream channel. The supervisory device also uses the messages and minislot counts to anticipate bursts from the remote devices. Dual registers are provided within the supervisory device to generate minislot counts. A primary register generates minislot counts for a current slot structure, and a secondary register generates minislot counts for a revised slot structure. Software executed on the supervisory device determines a switchover time for changing to the revised slot structure and revised minislot count. Prior to switchover, the revised minislot count is passed to the current slot structure processor allowing it to anticipate bursts from the remote devices using the revised slot structure. At switchover, the supervisory device also switches the revised clock along with the revised slot structure, deactivates the primary register, and switches to the secondary register to provide a seamless transition in real time.
摘要翻译：诸如无线网络内的基站的监控通信设备在包括因特网的广泛分布的网络中监视和控制与诸如移动节点的多个远程通信设备的通信。监控设备建立上行时隙结构，通过下行信道发送消息来分配上行带宽。监控设备还使用消息和小故障计数来预测来自远程设备的突发。在监控设备内提供双寄存器以产生小故障计数。主寄存器为当前时隙结构生成小时隙计数，并且辅助寄存器为修改的时隙结构生成小时隙计数。在监控装置上执行的软件确定切换到修改的时隙结构和修改的小时隙计数的切换时间。在切换之前，将修改后的小时隙计数传递到当前的时隙结构处理器，使其能够使用修改的时隙结构来预测来自远程设备的突发。在切换时，监控设备还将修改后的时钟与修改的时隙结构切换，取消激活主寄存器，并切换到辅助寄存器，实时实现无缝转换。

5. 发明申请

US20070064741A1 Method for real-time change of slot duration within a wireless network 失效
标题翻译：无线网络中时隙持续时间实时改变的方法
公开(公告)号：US20070064741A1
公开(公告)日：2007-03-22
申请号：US11543033
申请日：2006-10-05
申请人： David Dworkin , Niki Pantelias , Son Nguyen , Yushan Lu
发明人： David Dworkin , Niki Pantelias , Son Nguyen , Yushan Lu
IPC分类号： H04J3/00
CPC分类号： H04L12/2801
摘要： A supervisory communications device, such as a base station within a wireless network, monitors and controls communications with a plurality of remote communications devices, such as mobile nodes, throughout a widely distributed network, including the Internet. The supervisory device establishes the upstream slot structure and allocates upstream bandwidth by sending messages over its downstream channel. The supervisory device also uses the messages and minislot counts to anticipate bursts from the remote devices. Dual registers are provided within the supervisory device to generate minislot counts. A primary register generates minislot counts for a current slot structure, and a secondary register generates minislot counts for a revised slot structure. Software executed on the supervisory device determines a switchover time for changing to the revised slot structure and revised minislot count. Prior to switchover, the revised minislot count is passed to the current slot structure processor allowing it to anticipate bursts from the remote devices using the revised slot structure. At switchover, the supervisory device also switches the revised clock along with the revised slot structure, deactivates the primary register, and switches to the secondary register to provide a seamless transition in real time.
摘要翻译：诸如无线网络内的基站的监控通信设备在包括因特网的广泛分布的网络中监视和控制与诸如移动节点的多个远程通信设备的通信。监控设备建立上行时隙结构，通过下行信道发送消息来分配上行带宽。监控设备还使用消息和小故障计数来预测来自远程设备的突发。在监控设备内提供双寄存器以产生小故障计数。主寄存器为当前时隙结构生成小时隙计数，并且辅助寄存器为修改的时隙结构生成小时隙计数。在监控装置上执行的软件确定切换到修改的时隙结构和修改的小时隙计数的切换时间。在切换之前，将修改后的小时隙计数传递到当前的时隙结构处理器，使其能够使用修改的时隙结构来预测来自远程设备的突发。在切换时，监控设备还将修改后的时钟与修改的时隙结构切换，取消激活主寄存器，并切换到辅助寄存器，实时实现无缝转换。

6. 发明申请

US20060120294A1 Method and system for providing time offset to minislot clock and count in headend devices 审中-公开
公开(公告)号：US20060120294A1
公开(公告)日：2006-06-08
申请号：US11328174
申请日：2006-01-10
申请人： Lisa Denney , David Dworkin
发明人： Lisa Denney , David Dworkin
IPC分类号： H04J1/16 , H04L12/26 , H04J3/14 , H04J3/06 , G01R31/08 , G08C15/00 , G06F11/00 , H04L1/00
CPC分类号： H04J3/0682
摘要： A method and system for allocating an initial maintenance request (IMR) for an upstream channel in a communications system, wherein the communication system includes a headend and at least one remote device associated with the channel. A first propagation delay from the headend to the remote device having the greatest delay is determined. Likewise, a second propagation delay from the headend to the remote device experiencing the least delay is determined. The IMR is then defined to be shorter than the first propagation delay and at least as long as the difference between the two propagation delays. The starting point of the IMR is established by modifying the clock output of the headend. A modification value is added to the headend clock output. The modification value corresponds to a time interval that can be as long as the propagation delay from the headend to the remote having the shortest delay.

7. 发明申请

US20050074081A1 Method and apparatus for synchronizing clock and data between two domains having unknown but coherent phase 有权
标题翻译：用于在具有未知但相干相的两个域之间同步时钟和数据的方法和装置
公开(公告)号：US20050074081A1
公开(公告)日：2005-04-07
申请号：US10295825
申请日：2002-11-18
申请人： Joel Danzig , David Dworkin , Gregory Tow , Robert Hebert
发明人： Joel Danzig , David Dworkin , Gregory Tow , Robert Hebert
IPC分类号： H04L7/00 , H04L7/033
CPC分类号： H04L7/0012
摘要： A data synchronizer is provided for synchronizing data across two different clock domains in a manner that avoids additive jitter. The data synchronizer includes a synchronizer inputting a sampling clock and a data clock, and outputting an edge pulse. A synchronizer jitter lockout circuit inputs the edge pulse and the sampling clock and outputs a data sampling enable signal which never coincides with a data transition.
摘要翻译：提供了一种数据同步器，用于以避免添加抖动的方式在两个不同时钟域之间同步数据。数据同步器包括输入采样时钟和数据时钟的同步器，并输出边沿脉冲。同步器抖动锁定电路输入边沿脉冲和采样时钟，并输出与数据转换不一致的数据采样使能信号。

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