公开(公告)号：US20060083270A1

公开(公告)日：2006-04-20

申请号：US11194438

申请日：2005-08-01

申请人： Sung-Jin Lee ,  Young-Kwon Cho ,  Katz Daniel ,  Dong-Seek Park ,  Jung-Je Son ,  Chang-Hoi Koo ,  Frank Fitzek ,  Tatiana Madsen ,  Ramjee Prasad

发明人： Sung-Jin Lee ,  Young-Kwon Cho ,  Katz Daniel ,  Dong-Seek Park ,  Jung-Je Son ,  Chang-Hoi Koo ,  Frank Fitzek ,  Tatiana Madsen ,  Ramjee Prasad

IPC分类号： H04J3/00

CPC分类号： H04L12/2854 ,  H04L69/04 ,  H04L69/14 ,  H04L69/22 ,  H04W28/06

摘要： An apparatus transmits header information in a wireless communication system using a plurality of channels. In the apparatus, upon receiving uncompressed header (UCH) information, a compressor generates compressed header (CH) information and additional information container (AIC) information by compressing the UCH information with a predetermined compression scheme. A transmitter transmits the CH information through a first channel among the plurality of channels, and transmits the AIC information through at least one of the plurality of channels except for the first channel.

摘要翻译： 一种装置使用多个信道在无线通信系统中发送报头信息。 在该设备中，在接收到未压缩报头（UCH）信息时，压缩器通过以预定的压缩方案压缩UCH信息来生成压缩报头（CH）信息和附加信息容器（AIC）信息。 发射机通过多个信道中的第一信道发送CH信息，并且通过除了第一信道之外的多个信道中的至少一个发送AIC信息。

公开(公告)号：US20060083160A1

公开(公告)日：2006-04-20

申请号：US11250276

申请日：2005-10-14

申请人： Jin-Kyu Koo ,  Seok-Hyun Yoon ,  Chang-Ho Suh ,  Jung-Min Ro ,  Dong-Seek Park ,  Young-Kwon Cho

发明人： Jin-Kyu Koo ,  Seok-Hyun Yoon ,  Chang-Ho Suh ,  Jung-Min Ro ,  Dong-Seek Park ,  Young-Kwon Cho

IPC分类号： H04J11/00

CPC分类号： H04L27/2657 ,  H04L7/08 ,  H04L7/10 ,  H04L27/0014 ,  H04L27/2613 ,  H04L27/2675 ,  H04L2027/003 ,  H04L2027/0048 ,  H04L2027/0067 ,  H04L2027/0093

摘要： An apparatus and method for estimating and correcting an uplink frequency offset in an OFDM communication system are provided. A subscriber station (SS) once repeats an OFDM symbol including a ranging code allocated from a BS and transmits the repeated OFDM symbols to the base station (BS). The BS demodulates the two successive OFDM symbols received from the SS using the ranging code, sums the demodulated signal for each FFT window, and estimates the uplink frequency offset by multiplying the complex conjugate of a sum for a first FFT window by a sum for a second FFT window by the base station. The BS transmits a message including information about the frequency offset estimate to the SS. The SS then corrects the uplink frequency offset using the frequency offset information.

摘要翻译： 提供了一种用于在OFDM通信系统中估计和校正上行频率偏移的装置和方法。 用户站（SS）一次重复包括从BS分配的测距码的OFDM符号，并将重复的OFDM符号发送到基站（BS）。 BS使用测距码解调从SS接收的两个连续的OFDM符号，将每个FFT窗口的解调信号相加，并且通过将第一FFT窗口的和的复共轭乘以一个 第二个FFT窗口由基站。 BS向SS发送包括关于频率偏移估计的信息的消息。 SS然后使用频率偏移信息校正上行链路频率偏移。

公开(公告)号：US20050281350A1

公开(公告)日：2005-12-22

申请号：US11156689

申请日：2005-06-20

申请人： Chan-Byoung Chae ,  Hong-Sil Jeong ,  Young-Kwon Cho ,  Dong-Seek Park ,  Katz Daniel

发明人： Chan-Byoung Chae ,  Hong-Sil Jeong ,  Young-Kwon Cho ,  Dong-Seek Park ,  Katz Daniel

IPC分类号： H04L27/26 ,  H04B7/06 ,  H04J99/00 ,  H04L1/02

CPC分类号： H04B7/068

摘要： An apparatus and method for SFBC coding and decoding in a communication system using a plurality of (N1) Tx antennas are provided. In a transmitter using Nt transmit antennas, a pre-coder pre-codes an input symbol sequence using a pre-coding matrix. The pre-coding matrix is produced by puncturing a unitary matrix in a predetermined method. An encoder generates a plurality of vectors by grouping the symbols of the pre-coded symbol sequence by twos, space-frequency maps each of the vectors by encoding each of the vectors in an Alamouti coding scheme, and provides each of the space-frequency mapped symbols to a predetermined OFDM modulator.

摘要翻译： 提供了一种使用多个（N 1 1）个Tx天线的通信系统中的SFBC编码和解码的装置和方法。 在使用N T发射天线的发射机中，预编码器使用预编码矩阵对输入符号序列进行预编码。 预编码矩阵是通过以预定方法对单一矩阵进行打孔而产生的。 编码器通过对预编码符号序列的符号进行二进制分组来生成多个向量，通过以Alamouti编码方案对每个向量进行编码，对每个向量进行空间频率映射，并且提供每个空间频率映射 符号到预定的OFDM调制器。

公开(公告)号：US20050068884A1

公开(公告)日：2005-03-31

申请号：US10941744

申请日：2004-09-15

申请人： Seok-Hyun Yoon ,  Chang-Ho Suh ,  Young-Kwon Cho ,  Chan-Byoung Chae ,  Jung-Min Ro

发明人： Seok-Hyun Yoon ,  Chang-Ho Suh ,  Young-Kwon Cho ,  Chan-Byoung Chae ,  Jung-Min Ro

IPC分类号： H04B7/26 ,  H04J11/00 ,  H04L27/26

CPC分类号： H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04W28/06 ,  H04W48/16 ,  H04W72/00 ,  H04W72/0453 ,  H04W72/085

摘要： A mobile communication system and method utilizing Orthogonal Frequency Division Multiplexing (OFDM) receives channel quality information (CQIs) for subcarriers through which reference signals are transmitted and subcarriers through which data signals are transmitted, in subbands, each including a predetermined number of subcarriers among a plurality of the subcarriers. The CQIs are fed back from respective receivers. Resources are dynamically assigned to the respective receivers according to the feedback CQIs, thereby enabling dynamic resource assignment with minimized signaling overhead.

摘要翻译： 利用正交频分复用（OFDM）的移动通信系统和方法，在子带中接收用于发送参考信号的子载波的信道质量信息（CQI）和数据信号被发送的子载波，每个子带包括预定数量的子载波 多个副载波。 CQI从相应的接收机反馈。 根据反馈CQI将资源动态地分配给相应的接收机，从而使得能够以最小化的信令开销进行动态资源分配。

公开(公告)号：US20050002369A1

公开(公告)日：2005-01-06

申请号：US10885112

申请日：2004-07-06

申请人： Jung-Min Ro ,  Young-Kwon Cho ,  Hyeon-Woo Lee ,  Dong-Seek Park

发明人： Jung-Min Ro ,  Young-Kwon Cho ,  Hyeon-Woo Lee ,  Dong-Seek Park

IPC分类号： H04B7/26 ,  H04B1/707 ,  H04B7/216

CPC分类号： H04B1/7083 ,  H04L5/0012 ,  H04L5/0017 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2678

摘要： An apparatus and a method for cell search in an orthogonal frequency division multiplexing-based mobile communication system using a multiple access scheme. The method includes the steps of: detecting a symbol boundary of an input reception signal; detecting a frame cell boundary after synchronizing with the detected symbol boundary; detecting a reference signal for each symbol interval in a preset search interval; and detecting a pattern of the detected reference signals and detecting a base station to which the terminal belongs.

摘要翻译： 一种使用多址方案的基于正交频分复用的移动通信系统中的小区搜索的装置和方法。 该方法包括以下步骤：检测输入接收信号的符号边界; 在与检测到的符号边界同步之后检测帧单元边界; 在预设的搜索间隔中检测每个符号间隔的参考信号; 并且检测所检测的参考信号的模式并检测终端所属的基站。

公开(公告)号：US08670415B2

公开(公告)日：2014-03-11

申请号：US11500222

申请日：2006-08-07

申请人： Young-Bin Chang ,  Eun-Taek Lim ,  Jung-Min Ro ,  Jae-Hyuk Jang ,  Dong-Seek Park ,  Young-Kwon Cho ,  Seung-Hoon Park ,  Joon-Young Choi

发明人： Young-Bin Chang ,  Eun-Taek Lim ,  Jung-Min Ro ,  Jae-Hyuk Jang ,  Dong-Seek Park ,  Young-Kwon Cho ,  Seung-Hoon Park ,  Joon-Young Choi

IPC分类号： H04W4/00

CPC分类号： H04W36/0083 ,  H04B17/318 ,  H04B17/382 ,  H04W36/14 ,  H04W36/30

摘要： A method is provided for performing handoff in a communication system including a serving base station (BS) in communication with a mobile station (MS), at least one neighbor BS using a communication scheme different from a communication scheme of the serving BS, and the MS capable of communicating with the neighbor BS. The method includes compensating a signal strength of one of the serving BS and the neighbor BS, received at the MS, such that handoff decision is possible, and determining whether to perform a handoff of the MS, using the compensated signal strengths.

摘要翻译： 提供了一种用于在包括与移动站（MS）通信的服务基站（BS）的通信系统中执行切换的方法，使用不同于服务BS的通信方案的通信方案的至少一个相邻BS，以及 MS能够与邻居BS进行通信。 该方法包括补偿在MS处接收的服务BS和相邻BS之一的信号强度，使得切换判定成为可能，并且使用经补偿的信号强度来确定是否执行MS的切换。

公开(公告)号：US08488976B2

公开(公告)日：2013-07-16

申请号：US12886272

申请日：2010-09-20

申请人： Jae-Seung Son ,  Do-Young Kim ,  Eun-Tae Won ,  Tae-Han Bae ,  Young-Kwon Cho ,  Sun-Gi Gu

发明人： Jae-Seung Son ,  Do-Young Kim ,  Eun-Tae Won ,  Tae-Han Bae ,  Young-Kwon Cho ,  Sun-Gi Gu

IPC分类号： H04B10/00

CPC分类号： H04B10/116 ,  H04B10/1143 ,  H04B10/1149

摘要： A method and apparatus for supporting mobility of a mobile terminal in a Visible Light Communication (VLC) system. The method includes activating only necessary light sources for VLC considering the mobility of the mobile terminal, instead of using total light sources for VLC. Consequently, power consumption can be significantly reduced.

公开(公告)号：US20120224860A1

公开(公告)日：2012-09-06

申请号：US13508498

申请日：2010-07-26

申请人： Do-Young Kim ,  Hwa-Joong Kim ,  Clint F. Chaplin ,  Sun-Gi Gu ,  Eun-Tae Won ,  Young-Kwon Cho ,  Tae-Han Bae ,  Jae-Seung Son

发明人： Do-Young Kim ,  Hwa-Joong Kim ,  Clint F. Chaplin ,  Sun-Gi Gu ,  Eun-Tae Won ,  Young-Kwon Cho ,  Tae-Han Bae ,  Jae-Seung Son

IPC分类号： H04B10/10

CPC分类号： H04B10/1149 ,  H04B10/116

摘要： A method and device for determining an output of a visible frame in at Visible Light Communication (VLC) device are provided. A first VLC device determines whether to permit a second VLC device to generate visible frames, and transmits, to the second VLC device, visible frame information indicating whether the second VLC device is permitted to generate the visible frames.

摘要翻译： 提供了一种用于在可见光通信（VLC）设备中确定可见帧的输出的方法和装置。 第一VLC设备确定是否允许第二VLC设备产生可见帧，并且向第二VLC设备发送指示是否允许第二VLC设备生成可见帧的可见帧信息。

公开(公告)号：US08068456B2

公开(公告)日：2011-11-29

申请号：US12041213

申请日：2008-03-03

申请人： Hiroyuki Yomo ,  Elisabeth de Carvalho ,  Kathiravetpillai Sivanesan ,  Eun-Taek Lim ,  Young-Kwon Cho

发明人： Hiroyuki Yomo ,  Elisabeth de Carvalho ,  Kathiravetpillai Sivanesan ,  Eun-Taek Lim ,  Young-Kwon Cho

IPC分类号： H04W4/00 ,  H04J3/16 ,  H04J3/22

CPC分类号： H04B7/2606

摘要： A system and method for transmitting and receiving a signal in a communication system using a relay scheme. A base station receives a first signal in a first time interval from a first mobile station which is at least one mobile station located in a third region which is a region where a first region which is a region of the base station itself overlaps with a second region which is a region of a relay station. The relay station receives a second signal in the first time interval from a second mobile station which is at least one mobile station located in a fourth region which is a region not overlapping with the first region in the second region, and receives the first signal from the first mobile station. The relay station transmits a third signal including the first signal and the second signal to the base station in a second time interval. The base station receives the third signal in the second time interval, and cancels the first signal from the third signal to detect the second signal.

摘要翻译： 一种用于在使用中继方案的通信系统中发送和接收信号的系统和方法。 基站从第一移动台接收第一信号，第一移动台是位于第三区域中的至少一个移动站，第三区域是基站本身的区域的第一区域与第二区域重叠的区域 区域，其是中继站的区域。 中继站在第一时间间隔从第二移动台接收第二信号，该第二移动台是位于与第二区域中不与第一区域重叠的区域的第四区域中的至少一个移动站，并且从第二移动站接收第一信号 第一个移动台。 中继站在第二时间间隔中向基站发送包括第一信号和第二信号的第三信号。 基站在第二时间间隔接收第三信号，并且从第三信号中取消第一信号以检测第二信号。

公开(公告)号：US07852813B2

公开(公告)日：2010-12-14

申请号：US11510000

申请日：2006-08-25

申请人： Chang-Ho Suh ,  Jin-Kyu Koo ,  Dong-Seek Park ,  Young-Kwon Cho ,  Eun-Taek Lim ,  Jung-Soo Woo

发明人： Chang-Ho Suh ,  Jin-Kyu Koo ,  Dong-Seek Park ,  Young-Kwon Cho ,  Eun-Taek Lim ,  Jung-Soo Woo

IPC分类号： H04B7/216 ,  H04J13/00 ,  H04J11/00 ,  H04W4/00

CPC分类号： H04W48/12 ,  H04B17/327 ,  H04B17/382

摘要： A system for performing cell acquisition in a frequency overlay communication system having a first frequency band and a second frequency band including the first frequency band. A base station (BS) generates a reference signal used for identifying a cell using a specific sequence in a predetermined frequency band, and transmits the reference signal. A mobile station (MS) receives the reference signal to determine whether the BS uses the first frequency band or the second frequency band, determines a reference signal having a maximum correlation value through correlation calculation with at least one predefined sequence, and detects a BS identifier (ID) corresponding to the determined reference signal.

摘要翻译： 一种用于在具有包括第一频带的第一频带和第二频带的频率覆盖通信系统中执行小区获取的系统。 基站（BS）使用预定频带中的特定序列生成用于识别小区的参考信号，并发送参考信号。 移动站（MS）接收参考信号以确定BS是否使用第一频带或第二频带，通过至少一个预定序列的相关计算确定具有最大相关值的参考信号，并且检测BS标识符 （ID）对应于所确定的参考信号。