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61. 发明申请

US20110244807A1 APPARATUS AND METHOD FOR FREQUENCY OFFSET ESTIMATION IN MOBILE COMMUNICATION SYSTEM 有权
标题翻译：移动通信系统频率偏移估计的装置和方法
公开(公告)号：US20110244807A1
公开(公告)日：2011-10-06
申请号：US13080751
申请日：2011-04-06
申请人： Yon-Woo Yoon , Keun-Chul Hwang
发明人： Yon-Woo Yoon , Keun-Chul Hwang
IPC分类号： H04B17/00
CPC分类号： H04W56/0035 , H04L27/2657 , H04L27/2675
摘要： A method and apparatus estimate a frequency offset of a receiver in a mobile communication system. A pilot signal and a signal of a control channel are received from a transmitter. Frequency offsets of the pilot signal and frequency offsets of the control channel are estimated, respectively. And the frequency offset of the pilot signal is corrected based on the frequency offset estimation of the control channel.
摘要翻译：方法和装置估计移动通信系统中的接收机的频率偏移。从发送器接收导频信号和控制信道的信号。估计导频信号的频率偏移和控制信道的频率偏移。并且基于控制信道的频率偏移估计来校正导频信号的频率偏移。

62. 发明授权

US08804669B2 Methods and apparatuses for transmitting and receiving channel quality indicator (CQI) in broadband wireless communication system 有权
标题翻译：用于在宽带无线通信系统中发送和接收信道质量指示符（CQI）的方法和装置
公开(公告)号：US08804669B2
公开(公告)日：2014-08-12
申请号：US12587069
申请日：2009-10-01
申请人： Won-Kyun Suk , Keun-Chul Hwang
发明人： Won-Kyun Suk , Keun-Chul Hwang
IPC分类号： H04W4/00
CPC分类号： H04W72/1284 , H04L1/0025 , H04L1/0026 , H04L1/0029 , H04L1/0073 , H04W72/1231
摘要： A terminal is operable to transmit and receive CQI in a broadband wireless communication system. An operating method of the terminal for transmitting a CQI in a broadband wireless communication system includes requesting a band Adaptive Modulation and Coding (AMC) subchannel to a base station; after requesting the band AMC subchannel, transmitting a broadband CQI to the base station over a first control channel; and transmitting a first differential CQI relating to a band AMC allocated using the broadband CQI, over a second control channel. Thus, the overhead in the CQI feedback can be minimized and the CQI reception performance can be enhanced through the most robust encoding.
摘要翻译：终端可操作以在宽带无线通信系统中发送和接收CQI。用于在宽带无线通信系统中发送CQI的终端的操作方法包括向基站请求频带自适应调制和编码（AMC）子信道; 在请求频带AMC子信道之后，通过第一控制信道向基站发送宽带CQI; 以及通过第二控制信道发送与使用所述宽带CQI分配的频带AMC相关的第一差分CQI。因此，CQI反馈的开销可以最小化，并且可以通过最强大的编码来提高CQI接收性能。

63. 发明授权

US08542776B2 Apparatus and method for transmitting/receiving data in a multi-antenna system, and system using the same 有权
标题翻译：用于在多天线系统中发送/接收数据的装置和方法，以及使用该天线系统的系统
公开(公告)号：US08542776B2
公开(公告)日：2013-09-24
申请号：US13348266
申请日：2012-01-11
申请人： Sung-Jin Kim , June Moon , Yongxing Zhou , Jae-Hee Cho , Keun-Chul Hwang
发明人： Sung-Jin Kim , June Moon , Yongxing Zhou , Jae-Hee Cho , Keun-Chul Hwang
IPC分类号： H04L27/00
CPC分类号： H04B7/0632 , H04B7/0452 , H04B7/063 , H04B7/0689 , H04B7/0691
摘要： A closed-loop multi-antenna system and method thereof are provided. A transmitter includes a feedback information processor and a first transmit unit. A receiver includes a channel estimator, a feedback information generator and a second transmit unit. The feedback information processor receives feedback information from the receiver, calculates each of a sum rate in a multi-user mode and a sum rate in a single-user mode using the feedback information, and selects one of the single-user mode and the multi-user mode as a transmission mode depending on a comparison result between the sum rate in the multi-user mode and the sum rate in the single-user mode. The channel estimator acquires channel quality information (CQI) for each data stream transmitted individually via each antenna group. The feedback information generator determines the CQI associated information from the CQI acquired individually for each antenna group corresponding to the transmission mode.
摘要翻译：提供了一种闭环多天线系统及其方法。发射机包括反馈信息处理器和第一发射单元。接收机包括信道估计器，反馈信息发生器和第二发射单元。反馈信息处理器从接收器接收反馈信息，使用反馈信息在单用户模式中计算多用户模式中的和速率和总速率中的每一个，并且选择单用户模式和多用户模式中的一个用户模式作为传输模式，这取决于多用户模式中的总和速率与单用户模式下的总速率之间的比较结果。信道估计器获取通过每个天线组分别发送的每个数据流的信道质量信息（CQI）。反馈信息生成器根据与发送模式对应的每个天线组单独获取的CQI来确定CQI相关信息。

64. 发明申请

US20120170674A1 APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING DATA IN A MULTI-ANTENNA SYSTEM, AND SYSTEM USING THE SAME 有权
标题翻译：用于在多天线系统中发送/接收数据的装置和方法，以及使用该天线系统的系统
公开(公告)号：US20120170674A1
公开(公告)日：2012-07-05
申请号：US13348266
申请日：2012-01-11
申请人： Sung-Jin Kim , June Moon , Yongxing Zhou , Jae-Hee Cho , Keun-Chul Hwang
发明人： Sung-Jin Kim , June Moon , Yongxing Zhou , Jae-Hee Cho , Keun-Chul Hwang
IPC分类号： H04B7/02 , H04L27/00
CPC分类号： H04B7/0632 , H04B7/0452 , H04B7/063 , H04B7/0689 , H04B7/0691
摘要： A data reception apparatus and method for generating and transmitting feedback information in a multi-antenna system using grouped antennas, and a data transmission apparatus and method for transmitting a data stream of a user according to a transmission mode selected depending on the feedback information is disclosed. The reception apparatus generates feedback information depending on maximum channel quality information, an antenna group index associated with the maximum channel quality information, rank information, and remaining channel quality information associated with the rank information, and transmits the feedback information to the transmission apparatus. The transmission apparatus selects one of a multi-user mode and a single-user mode as a transmission mode depending on the feedback information and transmits a data stream of a user via multiple antenna groups or one antenna group, according to the selected transmission mode.
摘要翻译：公开了一种使用分组天线在多天线系统中产生和发送反馈信息的数据接收装置和方法，以及用于根据反馈信息选择的传输模式发送用户的数据流的数据传输装置和方法。接收装置根据最大信道质量信息，与最大信道质量信息相关联的天线组索引，秩信息和与等级信息相关联的剩余信道质量信息来生成反馈信息，并将该反馈信息发送到发送装置。发送装置根据反馈信息选择多用户模式和单用户模式之一作为发送模式，并且根据所选择的发送模式，经由多个天线组或一个天线组来发送用户的数据流。

65. 发明授权

US08121537B2 Apparatus and method for uplink channel sounding in a wireless communication system 有权
标题翻译：一种用于无线通信系统中的上行链路信道探测的装置和方法
公开(公告)号：US08121537B2
公开(公告)日：2012-02-21
申请号：US11758516
申请日：2007-06-05
申请人： Keun-Chul Hwang , Sung-Woo Park
发明人： Keun-Chul Hwang , Sung-Woo Park
IPC分类号： H03C7/02 , H04B7/00 , H04B7/02 , H04B7/185 , H04B17/02 , H04B1/06 , H04B7/005 , H04B1/44 , H04J11/00 , H04J1/00 , H04W4/00 , H04K1/10 , H04L27/28 , H04L1/02 , H03D3/22
CPC分类号： H04L1/0687 , H04L25/0206 , H04L25/0228 , H04L2025/03426
摘要： An uplink channel sounding apparatus and method in a wireless communication system are provided, in which in an MS, a baseband MODEM generates as many channel sounding signals as the MS has antennas and outputs the channel sounding signals to an antenna switch. The antenna switch switches the channel sounding signals to the antennas in a one-to-one basis transmitting the channel sounding signals to a BS through all of the antennas of the MS.
摘要翻译：提供了一种在无线通信系统中的上行链路信道探测装置和方法，其中在MS中，基带MODEM生成与MS具有天线一样多的信道探测信号，并将信道探测信号输出到天线开关。天线开关将信道探测信号以一对一的方式切换到天线，通过MS的所有天线将信道探测信号发送到BS。

66. 发明申请

US20100085931A1 Methods and apparatuses for transmitting and receiving channel quality indicator (CQL) in broadband wireless communication system 有权
标题翻译：宽带无线通信系统中发送和接收信道质量指标（CQL）的方法和装置
公开(公告)号：US20100085931A1
公开(公告)日：2010-04-08
申请号：US12587069
申请日：2009-10-01
申请人： Won-Kyun Suk , Keun-Chul Hwang
发明人： Won-Kyun Suk , Keun-Chul Hwang
IPC分类号： H04W72/04
CPC分类号： H04W72/1284 , H04L1/0025 , H04L1/0026 , H04L1/0029 , H04L1/0073 , H04W72/1231
摘要： A terminal is operable to transmit and receive CQI in a broadband wireless communication system. An operating method of the terminal for transmitting a CQI in a broadband wireless communication system includes requesting a band Adaptive Modulation and Coding (AMC) subchannel to a base station; after requesting the band AMC subchannel, transmitting a broadband CQI to the base station over a first control channel; and transmitting a first differential CQI relating to a band AMC allocated using the broadband CQI, over a second control channel. Thus, the overhead in the CQI feedback can be minimized and the CQI reception performance can be enhanced through the most robust encoding.
摘要翻译：终端可操作以在宽带无线通信系统中发送和接收CQI。用于在宽带无线通信系统中发送CQI的终端的操作方法包括向基站请求频带自适应调制和编码（AMC）子信道; 在请求频带AMC子信道之后，通过第一控制信道向基站发送宽带CQI; 以及通过第二控制信道发送与使用所述宽带CQI分配的频带AMC相关的第一差分CQI。因此，CQI反馈的开销可以最小化，并且可以通过最强大的编码来提高CQI接收性能。

67. 发明申请

US20080168326A1 Receiving apparatus and method in a wireless communication system 有权
标题翻译：无线通信系统中的接收装置和方法
公开(公告)号：US20080168326A1
公开(公告)日：2008-07-10
申请号：US12006740
申请日：2008-01-04
申请人： Keun-Chul Hwang , Sung-Woo Park , June Moon
发明人： Keun-Chul Hwang , Sung-Woo Park , June Moon
IPC分类号： G06F11/10 , H04L5/12
CPC分类号： H04L25/0202 , H04B7/0413 , H04B7/0851 , H04L1/005 , H04L1/06 , H04L25/03318
摘要： A receiving apparatus and a receiving method for interference cancellation in a wireless communication system are provided. The receiving apparatus includes a detector for estimating a desired signal and an interference signal by Multiple Input Multiple Output (MIMO)-detecting received signals; a first decoder for iteratively decoding the interference signal output from the detector; a second decoder for iteratively decoding the desired signal output from the decoder; and an LLR updater for updating an interval LLR value of the second decoder using an interval LLR value of the first decoder. Since the SIC/PIC is applied in the process of the iterative decoding of the decoder, the latency can be eliminated by applying the SIC/PIC after the completion of the decoding.
摘要翻译：提供了一种用于无线通信系统中的干扰消除的接收装置和接收方法。接收装置包括：检测器，用于通过检测接收信号的多输入多输出（MIMO）估计所需信号和干扰信号; 用于对从检测器输出的干扰信号进行迭代解码的第一解码器; 第二解码器，用于迭代地解码从解码器输出的期望信号; 以及LLR更新器，用于使用第一解码器的间隔LLR值来更新第二解码器的间隔LLR值。由于在解码器的迭代解码的过程中应用了SIC / PIC，所以在解码完成之后通过应用SIC / PIC可以消除等待时间。

68. 发明申请

US20050153659A1 Mobile communication apparatus including antenna array and mobile communication method 有权
标题翻译：包括天线阵列和移动通信方法的移动通信装置
公开(公告)号：US20050153659A1
公开(公告)日：2005-07-14
申请号：US10505559
申请日：2003-02-17
申请人： Yong-Suk Lee , Sung-Jin Kim , Kwang-Bok Lee , Keun-Chul Hwang
发明人： Yong-Suk Lee , Sung-Jin Kim , Kwang-Bok Lee , Keun-Chul Hwang
IPC分类号： H04B7/06 , H04B7/26 , H04B17/00
CPC分类号： H04B7/0639 , H04B7/0617 , H04B7/0658
摘要： Provided are a mobile communication apparatus including an antenna array and a mobile communication method. The mobile communication apparatus has a base station and a mobile station. The mobile station measures the downlink characteristics, detects physical space information and approximate long-term information, produces short-term informatio, transforms the short-term information and the physical space information into a feedback signal, and transmits the feedback signal to the base station. The base station receives the feedback signal, extracts weighted information, beamforms dedicated physical channel signals, combines pilot channel signals with the result of the beamforming, and transmits the results of the combinations to the mobile station via the antenna array. The physical space information denotes space information about the location of the mobile station with respect to the base station, and the approximate long-term information denotes long-term information. Accordingly, degradation of the performance of communications caused by a great amount of information to be fed back station can be prevented while keeping a beamforming gain.
摘要翻译：提供一种包括天线阵列和移动通信方法的移动通信装置。移动通信装置具有基站和移动台。移动台测量下行链路特性，检测物理空间信息和近似长期信息，产生短期信息，将短期信息和物理空间信息转换为反馈信号，并将反馈信号发送到基站。基站接收反馈信号，提取加权信息，波束形成专用物理信道信号，将导频信道信号与波束形成结果相结合，并通过天线阵列将结果结果发送给移动台。物理空间信息表示关于移动台相对于基站的位置的空间信息，近似长期信息表示长期信息。因此，可以在保持波束形成增益的同时防止由大量反馈站信息引起的通信性能的劣化。

69. 发明授权

US08503379B2 Apparatus and method for precoding by midamble in multiple input multiple output wireless communication system 有权
标题翻译：在多输入多输出无线通信系统中通过midamble进行预编码的装置和方法
公开(公告)号：US08503379B2
公开(公告)日：2013-08-06
申请号：US12424305
申请日：2009-04-15
申请人： Sung-Ho Lee , Keun-Chul Hwang , Sung-Woo Park
发明人： Sung-Ho Lee , Keun-Chul Hwang , Sung-Woo Park
IPC分类号： H04W4/00
CPC分类号： H04B7/0621 , H04B7/0632 , H04B7/0634 , H04L5/0023 , H04L5/0051 , H04L25/0204 , H04L25/0226 , H04L25/0244 , H04L25/03343 , H04L27/2613 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： A method and apparatus for performing codebook-based precoding in a Multiple Input Multiple Output (MIMO) wireless communication system are provided. In a method for operating a Base Station (BS) in a MIMO wireless communication system, a reference signal including pilot signals, which are divided by a predefined number of bands and are multiplied by respective codes in a codebook, is transmitted. One or more Mobile Stations (MSs) destined for spatial multiple access are selected using an index of a band and CQI of the band corresponding to the index, which are fed back from one or more MSs. A precoding matrix is generated to process data streams of the selected one or more MSs.
摘要翻译：提供了一种在多输入多输出（MIMO）无线通信系统中执行基于码本的预编码的方法和装置。在MIMO无线通信系统中用于操作基站（BS）的方法中，发送包括由预定数量的频带划分并与码本中的相应代码相乘的导频信号的参考信号。使用从一个或多个MS反馈的对应于索引的频带和CQI的索引来选择目的地用于空间多址的一个或多个移动站（MS）。生成预编码矩阵以处理所选择的一个或多个MS的数据流。

70. 发明授权

US08422426B2 Apparatus and method for calibration for cooperative multiple input multiple output in a wireless communication system 有权
标题翻译：无线通信系统中用于协作多输入多输出的校准装置和方法
公开(公告)号：US08422426B2
公开(公告)日：2013-04-16
申请号：US12791573
申请日：2010-06-01
申请人： Eun-Seok Ko , Keun-Chul Hwang , Eun-Yong Kim
发明人： Eun-Seok Ko , Keun-Chul Hwang , Eun-Yong Kim
IPC分类号： H04W4/00
CPC分类号： H04B7/024 , H04B7/0417 , H04W52/46
摘要： A method and apparatus for multi-cell calibration in a wireless communication system supporting cooperative Multiple Input Multiple Output (MIMO) are provided. Operations of a Base Station (BS) according to the method include transmitting a first message indicating a start of multi-cell sounding calibration to a reference Mobile Station (MS); estimating an uplink channel matrix of the reference MS using pilot symbols received from the reference MS; transmitting pilot symbols for enabling the reference MS to estimate a downlink channel matrix; when receiving downlink channel information of cooperative BSs from the reference MS, transmitting second messages comprising the downlink channel information to the cooperative BSs; and determining a multi-cell calibration matrix using the uplink channel matrix and the downlink channel information received from the reference MS.
摘要翻译：提供了一种支持协作多输入多输出（MIMO）的无线通信系统中多小区校准的方法和装置。根据该方法的基站（BS）的操作包括向参考移动站（MS）发送指示多小区发声校准开始的第一消息; 使用从所述参考MS接收的导频符号来估计所述参考MS的上行链路信道矩阵; 发送用于使所述参考MS能够估计下行链路信道矩阵的导频符号; 当从参考MS接收到协作BS的下行链路信道信息时，向合作BS发送包括下行链路信道信息的第二消息; 以及使用从所述参考MS接收的所述上行链路信道矩阵和所述下行链路信道信息来确定多小区校准矩阵。

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