公开(公告)号：US20080225975A1

公开(公告)日：2008-09-18

申请号：US11574725

申请日：2005-02-28

申请人： Seung-Joon Lee ,  Choong-Il Yeh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Hyoung-Soo Lim ,  In-Kyeong Choi ,  Jong-Ee Oh ,  Kwang-Jae Lim ,  Seong-Rag Kim ,  Young-Seog Song ,  Yu-Ro Lee ,  Seong-Keun Oh ,  Moon-Ii Lee

发明人： Seung-Joon Lee ,  Choong-Il Yeh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Hyoung-Soo Lim ,  In-Kyeong Choi ,  Jong-Ee Oh ,  Kwang-Jae Lim ,  Seong-Rag Kim ,  Young-Seog Song ,  Yu-Ro Lee ,  Seong-Keun Oh ,  Moon-Ii Lee

IPC分类号： H04B7/02

CPC分类号： H04B7/02 ,  H04B7/0697 ,  H04L1/0612

摘要： A space-time code used for a transmitter to transmit a plurality of data symbols to a receiver in a MIMO system, the space-time code including a code word matrix for transmitting an amount of data symbols corresponding to a product of the number of transmit antennas and a spatial multiplexing rate during one block period, wherein a row index indicates combined signals transmitted through different transmit antennas and a column index indicates time slots that correspond to the number of transmit antennas, and wherein the number of data symbols allocated to each transmit antenna in a code block corresponds to the spatial multiplexing rate, and the data symbols are combined by different combining coefficients for each transmit antenna at every time slot, and simultaneously transmitted through different transmit antennas, and each transmit antenna transmits a different set of data symbols at every time slot.

摘要翻译： 用于发射机的空时码将多个数据符号发送到MIMO系统中的接收机，所述时空码包括用于发送对应于发射次数的乘积的数据符号量的码字矩阵 天线和一个块周期内的空间多路复用率，其中行索引表示通过不同发射天线发射的组合信号，列索引指示对应于发射天线数的时隙，并且其中分配给每个发射的数据符号数 代码块中的天线对应于空间复用速率，并且通过在每个时隙对每个发射天线的不同组合系数组合数据符号，并且同时通过不同的发射天线发射，并且每个发射天线发射不同的数据符号集合 在每个时间段

公开(公告)号：US20070171811A1

公开(公告)日：2007-07-26

申请号：US11585481

申请日：2006-10-24

申请人： Yu-Ro Lee ,  Dong-Seung Kwon

发明人： Yu-Ro Lee ,  Dong-Seung Kwon

IPC分类号： H04J11/00 ,  H04Q7/00

CPC分类号： H04B7/061 ,  H04B7/0671 ,  H04B7/068 ,  H04B7/12 ,  H04L27/2626

摘要： The present invention relates to a transmitting apparatus of an OFDMA system and a method thereof. The transmitting apparatus includes an encoder for modulating data to be transmitted into data or a preamble by using a desired modulation scheme; an S/P converter for converting serial data output from the encoder to parallel data; a preamble or pilot generator for generating a pilot or preamble; a multiplexer for multiplexing the data or preamble output from the preamble or pilot generator and the parallel data; an antenna selection controller for dividing an entire band of a signal output from the multiplexer into groups formed of neighboring symbols in time domain and neighboring subcarriers in frequency domain, and selecting a transmit antenna for each group; an IFFT unit for turning off subcarriers in groups selected by the antenna selection controller and subcarriers in unselected groups by the antenna selection controller and performing IFFT; for each antenna, a P/S converter for converting parallel signals transmitted from the IFFT unit into serial signals and inserting a cyclic prefix; and for each antenna, a D/A converter and filter for converting a digital signal transmitted from the P/S into an analog signal and filtering the analog signal, and transmitting the filtered analog signal through an antenna of an R/F end. Accordingly, when a transmitting end does not know a channel state of a transmit antenna, a transmit antenna is selected for an allocation unit and data is transmitted through the selected transmit antenna when a transmitting end of an OFDMA system using multiple antennas does not know a channel state, and accordingly a diversity gain can be acquired without making any changes in allocation of subcarriers according to the number of antennas, a transmission structure of a pilot of the transmitting end, an allocation structure of the transmitting end, and a receiving end. In addition, when the transmitting end does know the channel state, an antenna having the best channel state is selected for each group, and accordingly, performance degradation due to feedback delay of channel state information and inter-antenna interference due to an increase of mobility of the terminal can be prevented.

公开(公告)号：US07035894B2

公开(公告)日：2006-04-25

申请号：US09832252

申请日：2001-04-10

申请人： Jae-Hong Park ,  Chong-Won Lee ,  Yu-Ro Lee ,  Jeong-Hwa Ye

发明人： Jae-Hong Park ,  Chong-Won Lee ,  Yu-Ro Lee ,  Jeong-Hwa Ye

IPC分类号： G06F15/16 ,  G01R31/28 ,  H04J3/24 ,  H04J3/16

CPC分类号： H04W28/06 ,  H04L1/1819 ,  H04L1/1845

摘要： A method for retransmitting data between two sides including a reception side and a transmission side in a mobile communication system including one or more mobile stations and one or more radio networks includes the steps of: by the reception side, storing data received from the transmission side in a first storage unit; as a result of an error-checking procedure, if the data are erroneous, requesting the transmission side to retransmit the data; by the transmission side, transmitting to the reception side a first information related to retransmission and retransmitting the requested data; by a combination unit included in the reception side, combining the retransmitted data with the data stored in the first storage unit; if the combined data are not erroneous, clearing the data and the retransmitted data from the first storage unit and transmitting the combined data to a first upper layer included in the reception side; and in response to an ACK signal from the reception side representing that normal data are received, clearing by the transmission side the retransmitted data from a second storage unit.

公开(公告)号：US06975608B1

公开(公告)日：2005-12-13

申请号：US09694805

申请日：2000-10-23

申请人： Jae-Hong Park ,  Chong-Won Lee ,  Yu-Ro Lee ,  Ho-Geun Lee

发明人： Jae-Hong Park ,  Chong-Won Lee ,  Yu-Ro Lee ,  Ho-Geun Lee

IPC分类号： H04W36/00 ,  H04J3/00 ,  H04J13/00 ,  H04L7/08 ,  H04W36/14 ,  H04W36/38 ,  H04Q7/00

CPC分类号： H04W36/0055 ,  H04W36/0094

摘要： A method for performing a handoff between an asynchronous base station and a synchronous base station. The method includes the steps of: a) setting at least one common channel between the synchronous base station and a mobile station; b) determining whether there is an asynchronous base station to be handed off in neighbor asynchronous base stations based on monitoring information of the neighbor asynchronous base stations; c) if there is no asynchronous base station, requesting a handoff to the synchronous base station and receiving a compressed mode message through the common channel; d) selecting a synchronous base station to be handed off based on the compressed mode message; and e) performing the handoff from the asynchronous base station to the synchronous base station.

摘要翻译： 一种用于在异步基站和同步基站之间执行切换的方法。 该方法包括以下步骤：a）在同步基站与移动台之间设置至少一个公共信道; b）基于相邻异步基站的监视信息确定是否存在要在邻近异步基站中切换的异步基站; c）如果没有异步基站，请求切换到同步基站并通过公共信道接收压缩模式消息; d）基于压缩模式消息选择要切换的同步基站; 以及e）执行从所述异步基站到所述同步基站的越区切换。

公开(公告)号：US20080291820A1

公开(公告)日：2008-11-27

申请号：US12096874

申请日：2006-07-25

申请人： Hyung-Soo Lim ,  Yu-Ro Lee ,  Dong-Seung Kwon

发明人： Hyung-Soo Lim ,  Yu-Ro Lee ,  Dong-Seung Kwon

IPC分类号： H04J14/00 ,  H04J13/04

CPC分类号： H04L5/0021 ,  H04J13/0048 ,  H04J13/18 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0064 ,  H04L5/0073

摘要： The present invention relates to a method for allocating a frequency domain spread code in a base station of a multi-carrier code division multiple access (MC-CDMA) communication system. A code allocation priority is established based on interference between previously allocated spread codes and a newly allocated spread code so as to minimize the interference caused by channel fading or a synchronization error according to a transmitting or receiving timing offset when a scheduler of the base station in the MC-CDMA communication system allocates a subcarrier group to the plurality of user terminals or channels, and the spread code is allocated to the plurality of user terminals or channels according to the established priority, by the scheduler of the base station.

摘要翻译： 本发明涉及一种在多载波码分多址（MC-CDMA）通信系统的基站中分配频域扩频码的方法。 基于先前分配的扩展码和新分配的扩展码之间的干扰建立码分配优先级，以便当基站的调度器处于发送或接收定时偏移时，根据发送或接收定时偏移最小化由信道衰落或同步误差引起的干扰 MC-CDMA通信系统向多个用户终端或信道分配子载波组，并且由基站的调度器根据建立的优先级将扩频码分配给多个用户终端或信道。

公开(公告)号：US20080285677A1

公开(公告)日：2008-11-20

申请号：US12091664

申请日：2006-10-27

申请人： Seung-Joon Lee ,  Jong-Ee Oh ,  Yu-Ro Lee ,  Dong-Seung Kwon

发明人： Seung-Joon Lee ,  Jong-Ee Oh ,  Yu-Ro Lee ,  Dong-Seung Kwon

IPC分类号： H04L27/00

CPC分类号： H01L23/3128 ,  H01L25/105 ,  H01L2225/1023 ,  H01L2225/1058 ,  H01L2924/0002 ,  H01L2924/3511 ,  H01L2924/00

摘要： An apparatus for transmitting signals with multiple antennas is disclosed. The multiple antenna transmission apparatus performs space-time encoding or space-frequency encoding, and cyclically delays the encoded symbol with a plurality of delay-values to generate a plurality of delayed symbols. The multiple antenna transmission apparatus transmits the plurality of delayed symbols to the channel through a plurality of antennas. By changing the number of space areas for encoding and the number of delay-values for delaying, the number of antennas for the multiple antenna transmission apparatus is easily expanded.

摘要翻译： 公开了一种用多个天线发射信号的装置。 多天线发送装置执行空时编码或空间频率编码，并且以多个延迟值循环地延迟编码符号，以生成多个延迟符号。 多天线发送装置通过多个天线将多个延迟符号发送到信道。 通过改变用于编码的空间区域的数量和用于延迟的延迟值的数量，多天线发送装置的天线数量容易扩大。

公开(公告)号：US20080240276A1

公开(公告)日：2008-10-02

申请号：US11667711

申请日：2005-08-10

申请人： Young-Seog Song ,  Seong-Rag Kim ,  In-Kyeong Choi ,  Choong-ll Yeh ,  Seung-Joon Lee ,  Hyoung-Soo Lim ,  Kwang-Jae Lim ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Chung-Yong Lee ,  Myeong-Cheol Shin

发明人： Young-Seog Song ,  Seong-Rag Kim ,  In-Kyeong Choi ,  Choong-ll Yeh ,  Seung-Joon Lee ,  Hyoung-Soo Lim ,  Kwang-Jae Lim ,  Yu-Ro Lee ,  Jong-Ee Oh ,  Dong-Seung Kwon ,  Seung-Ku Hwang ,  Chung-Yong Lee ,  Myeong-Cheol Shin

IPC分类号： H04L5/12 ,  H04L27/28

CPC分类号： H04B7/061 ,  H04B7/0669 ,  H04B7/0691 ,  H04B7/08 ,  H04L1/0003 ,  H04L1/0637 ,  H04L1/0675

摘要： The present invention relates to a multi-input multi-output (MIMO) system for enhancing transmission performance. The MIMO system uses space-time encoding and transmit antenna selection methods, and includes a transmitter (100) and a receiver (200). The transmitter (100) includes N transmit antennas (130-1, 130-4) that are more than M tansrni antennas (130-1, 130-3) used for transmitting a signal to space channel, selects the M transmit antennas (130-1, 130-3) among the N transmit antennas (130-3 130-4), and transmits symbol by space-time encoding the symbol. The receiver (200) includes M receive antenna (120-1, 210-2) for receiving a signal from the space channel, detects an information symbol by using the signal received through the receive antenna (210-1, 210-2), generates transmit antenna selection information for selecting M transmit antennas (130-1, 130-3) among transmit antennas (i30-1, . . . 7130-4) with reference to a channel estimate, and returns the information to the transmitter.

摘要翻译： 本发明涉及用于增强传输性能的多输入多输出（MIMO）系统。 MIMO系统使用时空编码和发射天线选择方法，并且包括发射机（100）和接收机（200）。 发射机（100）包括比用于将信号发射到空间信道的M多个天线（130-1,30-3）多的N个发射天线（130-1,140-4），选择M个发射天线（130 -1,130-3），并且通过对该符号进行时空编码来发送符号。 接收器（200）包括用于从空间信道接收信号的M个接收天线（120-1,210-2），通过使用通过接收天线（210-1,210-2）接收的信号来检测信息符号， 生成用于参考信道估计在发射天线（i 30-1，...，7130-4）中选择M个发射天线（130-1,130-3）的发射天线选择信息，并将该信息返回给发射机。

公开(公告)号：US20070263743A1

公开(公告)日：2007-11-15

申请号：US10583593

申请日：2004-07-22

申请人： Yu-Ro Lee ,  Jonge-Ee Oh ,  Choong-Il Yeh ,  Hyoung-Soo Lim ,  Dong-Seung Kwon

发明人： Yu-Ro Lee ,  Jonge-Ee Oh ,  Choong-Il Yeh ,  Hyoung-Soo Lim ,  Dong-Seung Kwon

IPC分类号： H04B7/02

CPC分类号： H04B7/12 ,  H04L5/0044 ,  H04L5/0048 ,  H04W72/00

摘要： Disclosed is a method for allocating data and pilots, a transmitting method and device, a receiving method and device in an OFDMA system. A terminal partitions subcarrier groups and symbols from an uplink channel based on a basic pilot pattern generated by a specific reference, receives at least one subchannel based on the partitioned subcarrier groups and symbols, hops the subcarrier groups caused by the subchannel according to hopping patterns, allocates data, and differently positions the pilots per subcarrier group based on the basic pilot pattern. Accordingly, the probability of pilot collision between adjacent cells is reduced, and accuracy of channel estimation is increased through boosting the pilot subcarrier power.

摘要翻译： 公开了一种在OFDMA系统中分配数据和导频的方法，发送方法和设备，接收方法和设备。 终端基于由特定基准产生的基本导频模式，从上行链路信道分割子载波组和符号，根据划分的子载波组和符号接收至少一个子信道，根据跳频图案跳过由子信道引起的子载波组， 分配数据，并且基于基本导频模式不同地定位每个子载波组的导频。 因此，相邻小区之间的导频冲突的概率降低，并且通过提升导频副载波功率来增加信道估计的精度。

公开(公告)号：US06992999B2

公开(公告)日：2006-01-31

申请号：US09767001

申请日：2001-01-22

申请人： Jae-Hong Park ,  Chong-Won Lee ,  Yu-Ro Lee ,  Ho-Geun Lee

发明人： Jae-Hong Park ,  Chong-Won Lee ,  Yu-Ro Lee ,  Ho-Geun Lee

IPC分类号： H04Q7/00

CPC分类号： H04W36/14 ,  H04W36/0072

摘要： In a handover from an asynchronous radio network to a synchronous system, long code state information and activation time are transmitted. The method of transmitting long code state information and activation time includes the step of acquiring handover-related information from a neighboring synchronous system by the asynchronous radio network. In the handover, the synchronous system transmit a first message including activation time information and long code state information to the mobile station by the asynchronous radio network and after receiving the activation time information and the long code state information, makes use of the long code state information based on the activation time information by the mobile station.

摘要翻译： 在从异步无线网络到同步系统的切换中，发送长码状态信息和激活时间。 发送长码状态信息和激活时间的方法包括由异步无线网络从相邻同步系统获取切换相关信息的步骤。 在切换中，同步系统通过异步无线网络向移动台发送包括激活时间信息和长码状态信息的第一消息，并且在接收到激活时间信息和长码状态信息之后，利用长码状态 基于移动台的激活时间信息的信息。

公开(公告)号：US06952583B1

公开(公告)日：2005-10-04

申请号：US09692065

申请日：2000-10-19

申请人： Jae-Hong Park ,  Ho-Geun Lee ,  Jeong-Hwa Ye ,  Yu-Ro Lee ,  Woon-Hee Hwang

发明人： Jae-Hong Park ,  Ho-Geun Lee ,  Jeong-Hwa Ye ,  Yu-Ro Lee ,  Woon-Hee Hwang

IPC分类号： H04J3/06 ,  H04L7/00 ,  H04W56/00 ,  H04Q7/20 ,  H04Q7/38

CPC分类号： H04W56/00

摘要： A method for processing a synchronous message in an asynchronous mobile communication system including an asynchronous mobile station and an asynchronous radio network, comprises the steps of: when a synchronous core network is interlocked with the asynchronous radio network, generating a system information block based on a header information provided from the synchronous core network; formatting the generated information block into a system information message; and transmitting the system information message to the asynchronous mobile station via a channel.

摘要翻译： 一种用于在包括异步移动站和异步无线电网络的异步移动通信系统中处理同步消息的方法，包括以下步骤：当同步核心网与异步无线电网络互锁时，基于 从同步核心网提供的头信息; 将所生成的信息块格式化为系统信息消息; 以及经由信道将所述系统信息消息发送到所述异步移动站。