公开(公告)号：US08886986B2

公开(公告)日：2014-11-11

申请号：US13587646

申请日：2012-08-16

申请人： Guijin Xu ,  Ruzhou Feng ,  Guozhu Long ,  Jianhua Liu

发明人： Guijin Xu ,  Ruzhou Feng ,  Guozhu Long ,  Jianhua Liu

IPC分类号： G06F1/12 ,  H04L5/14 ,  H04J1/00 ,  H04J3/08 ,  H04J3/06 ,  H04M11/06

CPC分类号： H04J3/0638 ,  H04M11/062

摘要： A clock synchronization method, customer premises equipment and a clock synchronization system are provided. The customer premises equipment reads a first time stamp when receiving a first specific position of a first DMT signal sent by central office equipment; reads a second time stamp when sending a second specific position of a second DMT signal; receives a third time stamp and a fourth time stamp that are sent by the central office equipment through a data information channel. The third time stamp is read when the central office equipment sends the first specific position of the first DMT signal, and the fourth time stamp is read when the central office equipment receives the second specific position of the second DMT signal. The customer premises equipment adjusts a clock of the customer premises equipment according to the first, second, third and fourth time stamps.

摘要翻译： 提供了时钟同步方法，客户端设备和时钟同步系统。 当接收到由中心局设备发送的第一DMT信号的第一特定位置时，客户驻地设备读取第一时间戳; 当发送第二DMT信号的第二特定位置时读取第二时间戳; 接收由中心局设备通过数据信息通道发送的第三时间戳和第四时间戳。 当中央办公室设备发送第一DMT信号的第一特定位置时，读取第三时间戳，并且当中心局设备接收到第二DMT信号的第二特定位置时，读取第四时间戳。 客户端设备根据第一，第二，第三和第四时间戳来调整客户驻地设备的时钟。

公开(公告)号：US08432851B2

公开(公告)日：2013-04-30

申请号：US12895326

申请日：2010-09-30

申请人： Guijin Xu ,  Guozhu Long ,  Ruzhou Feng

发明人： Guijin Xu ,  Guozhu Long ,  Ruzhou Feng

IPC分类号： H04B7/212 ,  H04J3/06 ,  H04L12/28 ,  H04L7/00

CPC分类号： H04L7/04 ,  H04J3/06 ,  H04J3/0685 ,  H04L27/2663 ,  H04L27/2672 ,  H04L27/2676 ,  H04L27/2682 ,  H04L27/2688 ,  H04L27/2691

摘要： A method, apparatus, and system for time synchronization are disclosed. The method comprising: obtaining a master sending time stamp, a slave receiving time stamp, a slave sending time stamp, and a master receiving time stamp; and adjusting the time of the slave clock according to the offset calculated from the time stamps to synchronize with the clock time of the master clock. With the present invention, in passband transmission systems that transmit signals continuously in units of symbols, the time synchronization is implemented between the master clock and the slave clock.

公开(公告)号：US20120311653A1

公开(公告)日：2012-12-06

申请号：US13587646

申请日：2012-08-16

申请人： Guijin Xu ,  Ruzhou Feng ,  Guozhu Long ,  Jianhua Liu

发明人： Guijin Xu ,  Ruzhou Feng ,  Guozhu Long ,  Jianhua Liu

IPC分类号： H04N7/173

CPC分类号： H04J3/0638 ,  H04M11/062

摘要： A clock synchronization method, customer premises equipment and a clock synchronization system are provided. The customer premises equipment reads a first time stamp when receiving a first specific position of a first DMT signal sent by central office equipment; reads a second time stamp when sending a second specific position of a second DMT signal; receives a third time stamp and a fourth time stamp that are sent by the central office equipment through a data information channel. The third time stamp is read when the central office equipment sends the first specific position of the first DMT signal, and the fourth time stamp is read when the central office equipment receives the second specific position of the second DMT signal. The customer premises equipment adjusts a clock of the customer premises equipment according to the first, second, third and fourth time stamps.

摘要翻译： 提供了时钟同步方法，客户端设备和时钟同步系统。 当接收到由中心局设备发送的第一DMT信号的第一特定位置时，客户驻地设备读取第一时间戳; 当发送第二DMT信号的第二特定位置时读取第二时间戳; 接收由中心局设备通过数据信息通道发送的第三时间戳和第四时间戳。 当中央办公设备发送第一DMT信号的第一特定位置时，读取第三时间戳，并且当中心局设备接收到第二DMT信号的第二特定位置时，读取第四时间戳。 客户端设备根据第一，第二，第三和第四时间戳来调整客户驻地设备的时钟。

公开(公告)号：US20110075685A1

公开(公告)日：2011-03-31

申请号：US12895326

申请日：2010-09-30

申请人： Guijin Xu ,  Guozhu Long ,  Ruzhou Feng

发明人： Guijin Xu ,  Guozhu Long ,  Ruzhou Feng

IPC分类号： H04J3/06

CPC分类号： H04L7/04 ,  H04J3/06 ,  H04J3/0685 ,  H04L27/2663 ,  H04L27/2672 ,  H04L27/2676 ,  H04L27/2682 ,  H04L27/2688 ,  H04L27/2691

摘要： A method, apparatus, and system for time synchronization are disclosed. The method comprising: obtaining a master sending time stamp, a slave receiving time stamp, a slave sending time stamp, and a master receiving time stamp; and adjusting the time of the slave clock according to the offset calculated from the time stamps to synchronize with the clock time of the master clock. With the present invention, in passband transmission systems that transmit signals continuously in units of symbols, the time synchronization is implemented between the master clock and the slave clock.

摘要翻译： 公开了一种用于时间同步的方法，装置和系统。 该方法包括：获得主发送时间戳，从接收时间戳，从发送时间戳和主接收时间戳; 并根据从时间戳计算的偏移量调整从时钟的时间，以与主时钟的时钟时间同步。 利用本发明，在以符号为单位连续发送信号的通带传输系统中，在主时钟和从时钟之间实现时间同步。

公开(公告)号：US20110274149A1

公开(公告)日：2011-11-10

申请号：US13184276

申请日：2011-07-15

申请人： Guijin Xu ,  Guozhu Long ,  Ruijie Xiao ,  Zhilei Zhao ,  Xuyong Wu ,  Yuchen Jia

发明人： Guijin Xu ,  Guozhu Long ,  Ruijie Xiao ,  Zhilei Zhao ,  Xuyong Wu ,  Yuchen Jia

IPC分类号： H04L7/04

CPC分类号： H04L7/0041 ,  H04J3/0638 ,  H04M11/062

摘要： The present invention provides a method, an apparatus, and a system for time synchronization of an xDigital Subscriber Line (xDSL). The method includes: transmitting, by a customer premises equipment (CPE), a first symbol to a central office (CO) equipment, and obtaining time Ts2 indicating the moment that the first symbol is transmitted; receiving, by the CPE, a second symbol transmitted by the CO, and obtaining time Ts1 indicating the moment that the second symbol is received; obtaining, by the CPE obtains time Tm2 indicating the moment that the first symbol is received by the CO and time Tm1 indicating the moment that the second symbol is transmitted by the CO; the CPE calculates an offset between a clock of the CPE and a clock of the CO according to Ts1, Ts2, Tm1, Tm2 and a delay of the CPE; and the CPE adjusts the clock of the CPE according to the offset to achieve synchronization. According to the present invention, by adjusting the time of the clock of the CPE and the time of the clock of the CO, the offset between the clock of the CPE and the clock of the CO can be obtained accurately to effectively achieve time synchronization between the CPE and the CO.

摘要翻译： 本发明提供了一种用于x数字用户线（xDSL）的时间同步的方法，装置和系统。 该方法包括：由客户驻地设备（CPE）向中心局（CO）设备发送第一符号，并获取指示发送第一符号的时刻的时间Ts2; 由所述CPE接收由所述CO发送的第二符号，并获得指示接收到所述第二符号的时刻的时间Ts1; 通过CPE获得表示由CO接收到第一符号的时刻的时间Tm2和表示CO发送第二符号的时刻的时间Tm1; CPE根据Ts1，Ts2，Tm1，Tm2和CPE的延迟来计算CPE的时钟与CO的时钟之间的偏移; 并且CPE根据偏移量调整CPE的时钟以实现同步。 根据本发明，通过调整CPE的时钟时间和CO的时钟时间，可以精确地获得CPE的时钟与CO的时钟之间的偏移量，以有效地实现CPE的时钟之间的时间同步 CPE和CO。

公开(公告)号：US08442175B2

公开(公告)日：2013-05-14

申请号：US13184276

申请日：2011-07-15

申请人： Guijin Xu ,  Guozhu Long ,  Ruijie Xiao ,  Zhilei Zhao ,  Xuyong Wu ,  Yuchen Jia

发明人： Guijin Xu ,  Guozhu Long ,  Ruijie Xiao ,  Zhilei Zhao ,  Xuyong Wu ,  Yuchen Jia

IPC分类号： H04L7/00 ,  H04B1/38

CPC分类号： H04L7/0041 ,  H04J3/0638 ,  H04M11/062

摘要： The present invention provides a method, an apparatus, and a system for time synchronization of an xDigital Subscriber Line (xDSL). The method includes: transmitting, by a customer premises equipment (CPE), a first symbol to a central office (CO) equipment, and obtaining time Ts2 indicating the moment that the first symbol is transmitted; receiving, by the CPE, a second symbol transmitted by the CO, and obtaining time Ts1 indicating the moment that the second symbol is received; obtaining, by the CPE obtains time Tm2 indicating the moment that the first symbol is received by the CO and time Tm1 indicating the moment that the second symbol is transmitted by the CO; the CPE calculates an offset between a clock of the CPE and a clock of the CO according to Ts1, Ts2, Tm1, Tm2 and a delay of the CPE; and the CPE adjusts the clock of the CPE according to the offset to achieve synchronization. According to the present invention, by adjusting the time of the clock of the CPE and the time of the clock of the CO, the offset between the clock of the CPE and the clock of the CO can be obtained accurately to effectively achieve time synchronization between the CPE and the CO.

摘要翻译： 本发明提供了一种用于x数字用户线（xDSL）的时间同步的方法，装置和系统。 该方法包括：由客户驻地设备（CPE）向中心局（CO）设备发送第一符号，并获取指示发送第一符号的时刻的时间Ts2; 由所述CPE接收由所述CO发送的第二符号，并获得指示接收到所述第二符号的时刻的时间Ts1; 通过CPE获得表示由CO接收到第一符号的时刻的时间Tm2和表示CO发送第二符号的时刻的时间Tm1; CPE根据Ts1，Ts2，Tm1，Tm2和CPE的延迟来计算CPE的时钟与CO的时钟之间的偏移; 并且CPE根据偏移量调整CPE的时钟以实现同步。 根据本发明，通过调整CPE的时钟时间和CO的时钟时间，可以精确地获得CPE的时钟与CO的时钟之间的偏移量，以有效地实现CPE的时钟之间的时间同步 CPE和CO。

公开(公告)号：US08670439B2

公开(公告)日：2014-03-11

申请号：US13175697

申请日：2011-07-01

申请人： Dong Wei ,  Guozhu Long ,  Jianhua Liu ,  Guijin Xu ,  Anni Wu

发明人： Dong Wei ,  Guozhu Long ,  Jianhua Liu ,  Guijin Xu ,  Anni Wu

IPC分类号： H04W56/00

CPC分类号： H04L7/041 ,  H04J3/0638 ,  H04J3/065 ,  H04J3/0667 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2675

摘要： An apparatus comprising a customer node configured to couple to an access node and to receive via a channel from the access node a time of day (TOD) value and a corresponding sample index (SNUM) value, wherein the TOD value and the SNUM value are used to estimate a second time of day (TOD′) value based on a propagation delay of the channel (L-Delay), and wherein the TOD value and the TOD′ value are used to estimate a second SNUM value (SNUM′) based on L-Delay and a plurality of parameters.

摘要翻译： 一种装置，包括被配置为耦合到接入节点并且经由来自接入节点的信道的时间（TOD）值和对应的采样索引（SNUM）值接收的客户节点，其中，所述TOD值和所述SNUM值是 用于基于通道的传播延迟（L-Delay）来估计第二时间（TOD'）值，并且其中TOD值和TOD'值用于基于第二SNUM值（SNUM'）估计 L-Delay和多个参数。

公开(公告)号：US20120020417A1

公开(公告)日：2012-01-26

申请号：US13175697

申请日：2011-07-01

申请人： Dong Wei ,  Guozhu Long ,  Jianhua Liu ,  Guijin Xu ,  Anni Wu

发明人： Dong Wei ,  Guozhu Long ,  Jianhua Liu ,  Guijin Xu ,  Anni Wu

IPC分类号： H04L7/00 ,  H04L27/00

CPC分类号： H04L7/041 ,  H04J3/0638 ,  H04J3/065 ,  H04J3/0667 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2675

摘要： An apparatus comprising a customer node configured to couple to an access node and to receive via a channel from the access node a time of day (TOD) value and a corresponding sample index (SNUM) value, wherein the TOD value and the SNUM value are used to estimate a second time of day (TOD′) value based on a propagation delay of the channel (L-Delay), and wherein the TOD value and the TOD′ value are used to estimate a second SNUM value (SNUM′) based on L-Delay and a plurality of parameters.

摘要翻译： 一种装置，包括被配置为耦合到接入节点并且经由来自接入节点的信道的时间（TOD）值和对应的采样索引（SNUM）值接收的客户节点，其中，所述TOD值和所述SNUM值是 用于基于通道的传播延迟（L-Delay）来估计第二时间（TOD'）值，并且其中TOD值和TOD'值用于基于第二SNUM值（SNUM'）估计 L-Delay和多个参数。

公开(公告)号：US08565418B2

公开(公告)日：2013-10-22

申请号：US13482642

申请日：2012-05-29

申请人： Cheng Li ,  Guozhu Long ,  Jie Lv ,  Huishen Dong ,  Liming Fang

发明人： Cheng Li ,  Guozhu Long ,  Jie Lv ,  Huishen Dong ,  Liming Fang

IPC分类号： H04M7/00

CPC分类号： H04L5/20 ,  H04L25/0272

摘要： The present invention provides a method, a device and a system for extending channels, and belongs to the field of communications technologies. The method includes: generating a non-cascade extended channel by using a first channel and a second channel; and generating a first-level cascade extended channel by using the non-cascade extended channel and a third channel, where the first channel and the second channel are both twisted-pair channels, and the third channel is a twisted-pair channel or another non-cascade extended channel. The device includes a first transformer and a second transformer. The system includes a first device and a second device.

摘要翻译： 本发明提供一种用于扩展信道的方法，装置和系统，属于通信技术领域。 该方法包括：通过使用第一信道和第二信道来产生非级联扩展信道; 以及通过使用非级联扩展信道和第三信道来生成第一级级联扩展信道，其中第一信道和第二信道都是双绞线信道，并且第三信道是双绞线信道或另一非信道 级联扩展通道。 该装置包括第一变压器和第二变压器。 该系统包括第一设备和第二设备。

公开(公告)号：US08537912B2

公开(公告)日：2013-09-17

申请号：US13034353

申请日：2011-02-24

申请人： Guozhu Long ,  Amir H. Fazlollahi ,  Liming Fang ,  Yuchen Jia

发明人： Guozhu Long ,  Amir H. Fazlollahi ,  Liming Fang ,  Yuchen Jia

IPC分类号： H04K1/10

CPC分类号： H04L25/14 ,  H04L5/0007 ,  H04L27/28 ,  H04M11/062

摘要： Disclosed is an apparatus that includes a plurality of parallel digital signal transmitters that each receive one of a plurality of digital sub-signals wherein each of the plurality of digital signal transmitters is configured to transmit one of the plurality of digital sub-signals that each have about the same bandwidth. The apparatus also includes a combiner coupled to the transmitters and configured to shift some of the plurality of digital sub-signals and to combine the plurality of shifted digital sub-signals into a combined digital signal that has a total bandwidth of that is approximately equal to the sum of the bandwidths of the plurality of digital sub-signals. The total bandwidth comprises a plurality of shifted bandwidths of the plurality of digital sub-signals at about the same offset with respect to each other. The combined digital signal is transmitted over a digital subscriber loop.

摘要翻译： 公开了一种装置，其包括多个并行数字信号发射机，每个并行数字信号发射机都接收多个数字子信号中的一个，其中多个数字信号发射机中的每一个被配置为发送每个数字子信号中的每一个 大约相同的带宽。 该装置还包括组合器，其耦合到发射机并且被配置为移动多个数字子信号中的一些并且将多个移位的数字子信号组合成具有总共带宽的组合数字信号近似等于 多个数字子信号的带宽之和。 总带宽包括相对于彼此大致相同偏移的多个数字子信号的多个移位带宽。 组合的数字信号通过数字用户回路传输。