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    • 21. 发明授权
    • Method and apparatus for supporting handover in heterogeneous network
    • 支持异构网络切换的方法和装置
    • US08543115B2
    • 2013-09-24
    • US13353613
    • 2012-01-19
    • Su-Ryong JeongSeung-Hoon ChoiSung-Eun ParkTae-Young Kim
    • Su-Ryong JeongSeung-Hoon ChoiSung-Eun ParkTae-Young Kim
    • H04W36/00
    • H04W36/30H04W36/04H04W36/14
    • A method for operating a terminal for supporting a handover in a heterogeneous network is provided. The method includes measuring received signal strength from a target small base station, so that a Signal-to-Noise Ratio (SNR) is estimated, when the SNR of the target small base station that considers a biased value for range expansion is greater than an SNR of a serving macro base station, determining whether an SNR of the target small base station that does not consider the biased value for the range expansion is equal to or less than a threshold, and when the SNR of the target small base station that does not consider the biased value for the range expansion is equal to or less than the threshold, transmitting indication information, informing that a low SNR is expected when the terminal performs a handover to the target small base station, to the serving macro base station.
    • 提供了一种用于操作终端以支持异构网络中的切换的方法。 该方法包括测量来自目标小型基站的接收信号强度,从而当考虑范围扩展的偏置值的目标小型基站的SNR大于一个时,估计信噪比(SNR) SNR,确定目标小型基站的SNR不考虑用于范围扩展的偏置值的SNR是否等于或小于阈值,以及当目标小型基站的SNR是否为 不考虑范围扩展的偏置值等于或小于阈值,发送指示信息,通知在终端执行向目标小型基站的切换时预期低SNR到服务宏基站。
    • 27. 发明申请
    • WDM-PON SYSTEM USING SELF-INJECTION LOCKING, OPTICAL LINE TERMINAL THEREOF, AND DATA TRANSMISSION METHOD
    • 使用自注射锁定的WDM-PON系统,其光线终端及数据传输方法
    • US20080279557A1
    • 2008-11-13
    • US12112153
    • 2008-04-30
    • Chang-Soo ParkTae-Young KimSeung Hyeon BaekSeung Heon Han
    • Chang-Soo ParkTae-Young KimSeung Hyeon BaekSeung Heon Han
    • H04J14/02
    • H04J14/02H04B10/572H04J14/0282
    • Disclosed are a wavelength division multiplexing-passive optical network (WDM-PON) system using self-injection locking, an optical line terminal thereof, and a data transmission method. A wavelength division multiplexing-passive optical network (WDM-PON) system according to an aspect of the invention includes an optical line terminal. The optical line terminal includes a reflector that is installed at the input side of a multiplexer and reflects an optical signal having a predetermined wavelength, and a light source that generates a multimode optical signal to transmit the generated multimode optical signal to the multiplexer through the reflector, receives reflected light by the reflector, and oscillates at a wavelength of the received reflected light. According to the aspect of the invention, it is not necessary to separately control the temperature of a light source for a downstream signal, and stable communication can be performed by collectively controlling wavelengths of downstream channel optical signals for downstream channels through temperature control of the multiplexer.
    • 公开了使用自注入锁定的波分复用无源光网络(WDM-PON)系统,其光线路终端和数据传输方法。 根据本发明的一个方面的波分复用无源光网络(WDM-PON)系统包括光线路终端。 光线路终端包括安装在多路复用器的输入侧并反射具有预定波长的光信号的反射器,以及产生多模光信号以将所生成的多模光信号通过反射器传输到多路复用器的光源 通过反射器接收反射光,并以接收的反射光的波长振荡。 根据本发明的一个方面,不需要单独地控制下行信号的光源的温度,并且可以通过多路复用器的温度控制来统一控制下行信道的下行信道光信号的波长来进行稳定的通信 。
    • 30. 发明申请
    • Apparatus and method for processing analog encoder signals
    • 用于处理模拟编码器信号的装置和方法
    • US20070124014A1
    • 2007-05-31
    • US11520675
    • 2006-09-14
    • Tae-Young Kim
    • Tae-Young Kim
    • G06F19/00
    • G01D5/24409
    • An apparatus and a method for processing signals of an analog encoder for generating quadrature signals to control a rotation of a motor using the analog encoder are provided. The apparatus for processing signals of the analog encoder includes a pattern generation unit of the analog encoder generating an encoder waveform corresponding to a waveform of the output signals by receiving the output signal of the analog encoder including at least one channel and sampling the received signals at regular intervals, and a generation unit for generating a status lookup table receiving the encoder pattern and generating the status lookup table including a predetermined number of information pieces on the encoder status based on the received encoder pattern, wherein the quadrature signals are generated by comparing feedback output signals to the information on the encoder status. The apparatus is adaptable to characteristics of various encoders.
    • 提供了一种用于处理用于产生正交信号以控制使用模拟编码器的电动机的旋转的模拟编码器的信号的装置和方法。 用于处理模拟编码器的信号的装置包括:模拟编码器的模式产生单元,通过接收包括至少一个通道的模拟编码器的输出信号,生成对应于输出信号的波形的编码器波形,并对接收到的信号进行采样 以及生成单元,用于生成接收编码器模式的状态查找表,并且基于接收到的编码器模式生成包括关于编码器状态的预定数量的信息的状态查找表,其中通过比较反馈来生成正交信号 输出信号到编码器状态信息。 该装置适用于各种编码器的特性。