公开(公告)号：US20060239303A1

公开(公告)日：2006-10-26

申请号：US11410422

申请日：2006-04-25

申请人： Jae-Hun Cho ,  Jong-Ho Yoon ,  Kwan-Soo Lee ,  Yun-Je Oh ,  Jun-Ho Koh ,  Si-Hai Wang ,  Sang-Ho Kim

发明人： Jae-Hun Cho ,  Jong-Ho Yoon ,  Kwan-Soo Lee ,  Yun-Je Oh ,  Jun-Ho Koh ,  Si-Hai Wang ,  Sang-Ho Kim

IPC分类号： H04J3/06 ,  H04J3/12 ,  H04J3/02

CPC分类号： H04J3/1682 ,  H04J3/0638

摘要： Disclosed is a method of performing a periodical synchronization at a predetermined transmission link for ensuring a start of a super frame in a residential Ethernet system. The method includes the steps of ensuring a start of a first predetermined super frame at the predetermined transmission link, transmitting Sync frames and Async frames through a predetermined number (N-1) of super frames, in which N is a total number of the super frames, and controlling an Async frame to be transmitted at an end point of the (N-1) super frames in such a manner that a start of a next super frame (Nth super frame) is strictly ensured, thereby maintaining a synchronization for the start of the super frame.

摘要翻译： 公开了一种在预定的传输链路上执行周期性同步的方法，以确保在住宅以太网系统中启动超帧。 该方法包括以下步骤：确保在预定传输链路上开始第一预定超帧，通过预定数量（N-1）超帧传输同步帧和异步帧，其中N是超级帧的总数 帧，并且控制在（N-1）个超帧的终点处发送的异步帧，使得下一个超帧（N ^{超帧）的开始是严格的 从而保持超帧开始的同步。}

公开(公告)号：US20090097405A1

公开(公告)日：2009-04-16

申请号：US12249012

申请日：2008-10-10

申请人： Chang-Hyun LEE ,  Tae-Sung Park ,  Jae-Hoon Kwon ,  Do-Young Joung ,  Jae-Sung Park ,  Sung-Kee Kim ,  Yong-Gyoo Kim ,  Yun-Je Oh ,  Si-Hai Wang

发明人： Chang-Hyun LEE ,  Tae-Sung Park ,  Jae-Hoon Kwon ,  Do-Young Joung ,  Jae-Sung Park ,  Sung-Kee Kim ,  Yong-Gyoo Kim ,  Yun-Je Oh ,  Si-Hai Wang

IPC分类号： H04L12/26

CPC分类号： H04L47/10 ,  H04L1/0014 ,  H04L1/0018 ,  H04L1/1812 ,  H04L47/14 ,  H04L47/25 ,  H04L47/38 ,  H04W28/18

摘要： A method for setting an output bit rate for video data transmission in a WiBro system in which an uplink state value for a predetermined unit time is calculated to determine an uplink network state of the predetermined unit time. An average of uplink state values for a predetermined number of unit times is calculated, and a video encoding bit rate is increased if the average of the uplink state values is larger than a predetermined first threshold. However, the video encoding bit rate is decreased if the average of the uplink state values is less than a predetermined second threshold.

摘要翻译： 一种在WiBro系统中设置用于视频数据传输的输出比特率的方法，其中计算出预定单位时间的上行链路状态值，以确定预定单位时间的上行链路网络状态。 计算预定数量的单位时间的上行链路状态值的平均值，并且如果上行链路状态值的平均值大于预定的第一阈值，则视频编码比特率增加。 然而，如果上行链路状态值的平均值小于预定的第二阈值，则视频编码比特率降低。

公开(公告)号：US07944908B2

公开(公告)日：2011-05-17

申请号：US12249012

申请日：2008-10-10

申请人： Chang-Hyun LEE ,  Tae-Sung Park ,  Jae-Hoon Kwon ,  Do-Young Joung ,  Jae-Sung Park ,  Sung-Kee Kim ,  Yong-Gyoo Kim ,  Yun-Je Oh ,  Si-Hai Wang

发明人： Chang-Hyun LEE ,  Tae-Sung Park ,  Jae-Hoon Kwon ,  Do-Young Joung ,  Jae-Sung Park ,  Sung-Kee Kim ,  Yong-Gyoo Kim ,  Yun-Je Oh ,  Si-Hai Wang

IPC分类号： H04L12/28

CPC分类号： H04L47/10 ,  H04L1/0014 ,  H04L1/0018 ,  H04L1/1812 ,  H04L47/14 ,  H04L47/25 ,  H04L47/38 ,  H04W28/18

摘要： A method for setting an output bit rate for video data transmission in a WiBro system in which an uplink state value for a predetermined unit time is calculated to determine an uplink network state of the predetermined unit time. An average of uplink state values for a predetermined number of unit times is calculated, and a video encoding bit rate is increased if the average of the uplink state values is larger than a predetermined first threshold. However, the video encoding bit rate is decreased if the average of the uplink state values is less than a predetermined second threshold.

摘要翻译： 一种在WiBro系统中设置用于视频数据传输的输出比特率的方法，其中计算出预定单位时间的上行链路状态值，以确定预定单位时间的上行链路网络状态。 计算预定数量的单位时间的上行链路状态值的平均值，并且如果上行链路状态值的平均值大于预定的第一阈值，则视频编码比特率增加。 然而，如果上行链路状态值的平均值小于预定的第二阈值，则视频编码比特率降低。

公开(公告)号：US07831000B2

公开(公告)日：2010-11-09

申请号：US11652226

申请日：2007-01-11

申请人： Si-Hai Wang ,  Jae-Hun Cho ,  Seong-Taek Hwang ,  Hoon Kim

发明人： Si-Hai Wang ,  Jae-Hun Cho ,  Seong-Taek Hwang ,  Hoon Kim

IPC分类号： H04L7/00

CPC分类号： H04J3/0664

摘要： A method for time synchronization in a distributed control system includes the steps of: when a sync is received from a master-side, confirming both a reception time point of the corresponding sync and a compensation time point of a previous frequency, and determining if a result obtained by confirming the two time points corresponds to a preset Frequency Compensation Interval (FCI); performing only a time offset compensation operation when the result obtained by confirming the two time points does not correspond to the preset FCI; and performing both time offset and frequency compensation operations when the result obtained by confirming the two time points corresponds to the preset FCI.

摘要翻译： 在分布式控制系统中的时间同步的方法包括以下步骤：当从主方接收到同步时，确认相应同步的接收时间点和前一频率的补偿时间点，并确定是否 通过确认两个时间点获得的结果对应于预设的频率补偿间隔（FCI）; 当通过确认两个时间点获得的结果不对应于预设的FCI时，仅执行时间偏移补偿操作; 并且当通过确认两个时间点获得的结果对应于预设的FCI时，执行时间偏移和频率补偿操作两者。

公开(公告)号：US20070258550A1

公开(公告)日：2007-11-08

申请号：US11652226

申请日：2007-01-11

申请人： Si-Hai Wang ,  Jae-Hun Cho ,  Seong-Taek Hwang ,  Hoon Kim

发明人： Si-Hai Wang ,  Jae-Hun Cho ,  Seong-Taek Hwang ,  Hoon Kim

IPC分类号： H04L7/00

CPC分类号： H04J3/0664

摘要： A method for time synchronization in a distributed control system includes the steps of: when a sync is received from a master-side, confirming both a reception time point of the corresponding sync and a compensation time point of a previous frequency, and determining if a result obtained by confirming the two time points corresponds to a preset Frequency Compensation Interval (FCI); performing only a time offset compensation operation when the result obtained by confirming the two time points does not correspond to the preset FCI; and performing both time offset and frequency compensation operations when the result obtained by confirming the two time points corresponds to the preset FCI.

摘要翻译： 在分布式控制系统中的时间同步的方法包括以下步骤：当从主方接收到同步时，确认相应同步的接收时间点和前一频率的补偿时间点，并确定是否 通过确认两个时间点获得的结果对应于预设的频率补偿间隔（FCI）; 当通过确认两个时间点获得的结果不对应于预设的FCI时，仅执行时间偏移补偿操作; 并且当通过确认两个时间点获得的结果对应于预设的FCI时，执行时间偏移和频率补偿操作两者。

公开(公告)号：US08189499B2

公开(公告)日：2012-05-29

申请号：US12107817

申请日：2008-04-23

申请人： Do-Young Joung ,  Tae-Sung Park ,  Jae-Hoon Kwon ,  Sung-Kee Kim ,  Yong-Gyoo Kim ,  Si-Hai Wang ,  Chang-Hyun Lee

发明人： Do-Young Joung ,  Tae-Sung Park ,  Jae-Hoon Kwon ,  Sung-Kee Kim ,  Yong-Gyoo Kim ,  Si-Hai Wang ,  Chang-Hyun Lee

IPC分类号： H04B7/00

CPC分类号： H04N21/6131 ,  H04L1/0003 ,  H04L1/0014 ,  H04L1/0015 ,  H04N21/234381 ,  H04N21/23805 ,  H04N21/2383 ,  H04N21/2402 ,  H04N21/26216 ,  H04N21/2662 ,  H04N21/41407 ,  H04N21/6373 ,  H04N21/6379

摘要： A cross-layer optimization method for controlling a bit rate of a video coder/decoder (codec) in video data transmission for wireless devices such as a wireless broadband (WiBro) system terminal that adapts to changing transmission/reception characteristics and usage. The method typically includes checking, by a sender, radio channel state information of a sender side and a receiver side; determining, by the sender, a transmission bit rate of a video codec by using the radio channel state information of the sender side; and adjusting, by the sender, the transmission bit rate of the video codec by using the radio channel state information of the receiver side when a communication network used by a receiver typically based on the type of a communication network being used by the sender.

摘要翻译： 一种跨层优化方法，用于控制视频编码器/解码器（编解码器）在用于诸如无线宽带（WiBro）系统终端的无线设备的视频数据传输中的比特率，其适应变化的发射/接收特性和使用。 该方法通常包括由发送者检查发送方和接收方的无线电信道状态信息; 由发送方通过使用发送方的无线电信道状态信息来确定视频编解码器的传输比特率; 以及当由接收机使用的通信网络通常基于通信网络的类型由发送方使用时，通过使用接收机侧的无线电信道状态信息，由发送方调整视频编解码器的传输比特率。

公开(公告)号：US20080259834A1

公开(公告)日：2008-10-23

申请号：US12107817

申请日：2008-04-23

申请人： Do-Young Joung ,  Tae-Sung Park ,  Jae-Hoon Kwon ,  Sung-Kee Kim ,  Yong-Gyoo Kim ,  Si-Hai Wang ,  Chang-Hyun Lee

发明人： Do-Young Joung ,  Tae-Sung Park ,  Jae-Hoon Kwon ,  Sung-Kee Kim ,  Yong-Gyoo Kim ,  Si-Hai Wang ,  Chang-Hyun Lee

IPC分类号： H04B7/00

CPC分类号： H04N21/6131 ,  H04L1/0003 ,  H04L1/0014 ,  H04L1/0015 ,  H04N21/234381 ,  H04N21/23805 ,  H04N21/2383 ,  H04N21/2402 ,  H04N21/26216 ,  H04N21/2662 ,  H04N21/41407 ,  H04N21/6373 ,  H04N21/6379

摘要： A cross-layer optimization method for controlling a bit rate of a video coder/decoder (codec) in video data transmission for wireless devices such as a wireless broadband (WiBro) system terminal that adapts to changing transmission/reception characteristics and usage. The method typically includes checking, by a sender, radio channel state information of a sender side and a receiver side; determining, by the sender, a transmission bit rate of a video codec by using the radio channel state information of the sender side; and adjusting, by the sender, the transmission bit rate of the video codec by using the radio channel state information of the receiver side when a communication network used by a receiver typically based on the type of a communication network being used by the sender.

摘要翻译： 一种跨层优化方法，用于控制视频编码器/解码器（编解码器）在用于诸如无线宽带（WiBro）系统终端的无线设备的视频数据传输中的比特率，其适应变化的发射/接收特性和使用。 该方法通常包括由发送者检查发送方和接收方的无线电信道状态信息; 由发送方通过使用发送方的无线电信道状态信息来确定视频编解码器的传输比特率; 以及当由接收机使用的通信网络通常基于通信网络的类型由发送方使用时，通过使用接收机侧的无线电信道状态信息，由发送方调整视频编解码器的传输比特率。