公开(公告)号：US20130148522A1

公开(公告)日：2013-06-13

申请号：US13555580

申请日：2012-07-23

申请人： Ok Sun PARK ,  Nam Il KIM ,  Hyun Gu HWANG ,  Dae Ho KIM

发明人： Ok Sun PARK ,  Nam Il KIM ,  Hyun Gu HWANG ,  Dae Ho KIM

IPC分类号： H04W72/08 ,  H04W60/00 ,  H04W56/00 ,  H04W24/02 ,  H04W4/04

CPC分类号： H04W4/025 ,  H04W24/02 ,  H04W64/00 ,  H04W72/085

摘要： A data communication apparatus according to the present invention includes a channel determination unit for determining frequency channels to be monitored on the basis of a current location of the ship station, a performance measurement unit for measuring channel performance for each of the determined frequency channels, a channel selection unit for selecting one frequency channel from among the determined frequency channels on the basis of the measured channel performance, and a data communication unit for performing data communication with the coast station using the selected frequency channel.

摘要翻译： 根据本发明的数据通信装置包括：信道确定单元，用于基于船舶的当前位置确定要监视的频道;用于测量每个所确定的频道的频道性能的演出测量单元， 频道选择单元，用于基于测量的频道性能从所确定的频道中选择一个频道;以及数据通信单元，用于使用所选择的频道与海岸电台进行数据通信。

公开(公告)号：US20130148645A1

公开(公告)日：2013-06-13

申请号：US13563247

申请日：2012-07-31

申请人： Hyun Gu HWANG ,  Dae Ho KIM

发明人： Hyun Gu HWANG ,  Dae Ho KIM

IPC分类号： H04J3/06

CPC分类号： H04J3/06 ,  H04L7/00 ,  H04W56/0085

摘要： Disclosed is an uplink synchronization method of a base station according to the present invention includes receiving an initial access signal from a terminal; obtaining an uplink synchronization using the received initial access signal; informing the terminal about obtainment of the uplink synchronization; and receiving a data signal from the terminal. According to the present invention, a marine wireless communication system may efficiently perform uplink synchronization between the base station and the terminal, and may efficiently operate wireless resources.

摘要翻译： 公开了根据本发明的基站的上行链路同步方法，包括从终端接收初始接入信号; 使用所接收的初始接入信号获得上行链路同步; 通知终端获得上行同步; 并从终端接收数据信号。 根据本发明，船用无线通信系统可以有效地执行基站与终端之间的上行同步，并且可以有效地操作无线资源。

公开(公告)号：US20100158167A1

公开(公告)日：2010-06-24

申请号：US12543815

申请日：2009-08-19

申请人： Hyun Gu HWANG ,  Hyeong Jun PARK ,  Hee Sang CHUNG

发明人： Hyun Gu HWANG ,  Hyeong Jun PARK ,  Hee Sang CHUNG

IPC分类号： H04L27/08 ,  H04B1/06

CPC分类号： H03G3/3089

摘要： Provided is an auto gain control method in a digital communication system. The auto gain control method checks a distribution of a signal and a distribution of a signal envelope during a regular check interval, and determines a state of a current gain value from the distribution of the signal and the distribution of the signal envelope which are obtained through the checking of the distribution. The auto gain control method controls a gain value for auto gain control according to the determined state of the current gain value.

摘要翻译： 提供了一种数字通信系统中的自动增益控制方法。 自动增益控制方法在常规检查间隔期间检查信号的分布和信号包络的分布，并根据信号的分布和信号包络的分布来确定当前增益值的状态 检查分配。 自动增益控制方法根据当前增益值的确定状态来控制自动增益控制的增益值。