公开(公告)号：US09450796B2

公开(公告)日：2016-09-20

申请号：US12523125

申请日：2008-01-04

申请人： Moon-Sik Lee ,  Hye-Kyung Jwa ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Moon-Sik Lee ,  Hye-Kyung Jwa ,  Hyoseok Yi ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04L27/00 ,  H04L27/26

CPC分类号： H04L27/2607 ,  H04L69/323 ,  H04W74/006

摘要： Provided is a method of forming a random access preamble structure for an extended cell radius in a cellular system, the method including: generating a cyclic prefix (CP), which is the sum of a maximum delay spread and the maximum round trip delay according to the extended cell; generating a preamble sequence part. The method is used to form a preamble structure for an extended cell radius from among random access preamble structures transmitted when initial synchronization is achieved, when synchronization is lost, or when a handover is performed, during a random access process of the cellular system.

摘要翻译： 提供了一种在蜂窝系统中形成用于扩展小区半径的随机接入前导码结构的方法，所述方法包括：根据根据本发明的方法，生成循环前缀（CP），其是最大延迟扩展和最大往返延迟之和 扩展单元格 生成前导序列部分。 该方法用于在实现初始同步时，当同步丢失时，或者当在蜂窝系统的随机接入过程中执行切换时，从发送的随机接入前同步码结构中形成用于扩展小区半径的前导码结构。

公开(公告)号：US20100080307A1

公开(公告)日：2010-04-01

申请号：US12523125

申请日：2008-01-04

申请人： Moon-Sik Lee ,  Hye-Kyung Jwa ,  Hyoseok Yi ,  Young-Hoon Kim

发明人： Moon-Sik Lee ,  Hye-Kyung Jwa ,  Hyoseok Yi ,  Young-Hoon Kim

IPC分类号： H04L27/00

CPC分类号： H04L27/2607 ,  H04L69/323 ,  H04W74/006

摘要： Provided is a method of forming a random access preamble structure for an extended cell radius in a cellular system, the method including: generating a cyclic prefix (CP), which is the sum of a maximum delay spread and the maximum round trip delay according to the extended cell; generating a preamble sequence part. The method is used to form a preamble structure for an extended cell radius from among random access preamble structures transmitted when initial synchronization is achieved, when synchronization is lost, or when a handover is performed, during a random access process of the cellular system.

摘要翻译： 提供了一种在蜂窝系统中形成用于扩展小区半径的随机接入前导码结构的方法，所述方法包括：根据根据本发明的方法，生成循环前缀（CP），其是最大延迟扩展和最大往返延迟之和 扩展单元格 生成前导序列部分。 该方法用于在实现初始同步时，当同步丢失时，或者当在蜂窝系统的随机接入过程中执行切换时，从发送的随机接入前同步码结构中形成用于扩展小区半径的前导码结构。

公开(公告)号：US20080316913A1

公开(公告)日：2008-12-25

申请号：US12094238

申请日：2006-11-17

申请人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang ,  Eun-Jeong Shin ,  Hye-Kyung Jwa ,  Moon-Sik Lee

发明人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang ,  Eun-Jeong Shin ,  Hye-Kyung Jwa ,  Moon-Sik Lee

IPC分类号： H04J11/00

CPC分类号： H04B7/061 ,  H04L1/06 ,  H04L1/1893 ,  H04L5/0023 ,  H04L5/0044

摘要： The present invention relates to a packet data transmission method in an OFDMA system and an apparatus thereof. The present invention provides a user packet data transmission method including generating a RACH burst for channel information estimation, selecting a first antenna among a plurality of antennas, transmitting the RACH burst through the first antenna to a base station, receiving a data transmission acceptance signal from the base station, in response to the RACH burst, transmitting user packet data through the first antenna when receiving a signal indicating that the data transmission is allowed, and selecting a second antenna that is difference from the first antenna and transmitting a RACH burst through the second antenna when receiving a signal indicating that the data transmission is not allowed, and a transmitting apparatus of a mobile station having the plurality of antennas. According to the present invention, the RACH burst and user packet data are transmitted by using a mobile station having a plurality of antennas in an LTE-applied OFDMA system, and therefore data transmission can be performed with a wide bandwidth and high data rate and a deep fading period that may occur during the data transmission can be reduced, thereby preventing call dropping and improving data transmission performance.

摘要翻译： 本发明涉及OFDMA系统中的分组数据传输方法及其装置。 本发明提供了一种用户分组数据传输方法，包括：生成用于信道信息估计的RACH脉冲串，选择多个天线中的第一天线，通过第一天线发送RACH脉冲串到基站;从基站接收数据传输接收信号; 所述基站响应于所述RACH突发，当接收到指示允许所述数据传输的信号时，通过所述第一天线发送用户分组数据，并且选择与所述第一天线不同并且通过所述第一天线发送RACH突发的第二天线 在接收到指示不允许数据传输的信号的第二天线以及具有多个天线的移动台的发送装置。 根据本发明，通过在LTE应用的OFDMA系统中使用具有多个天线的移动台来发送RACH突发和用户分组数据，因此可以以宽带宽和高数据速率进行数据传输，并且 可以减少在数据传输期间可能发生的深度衰落周期，从而防止呼叫丢弃并提高数据传输性能。

公开(公告)号：US08369300B2

公开(公告)日：2013-02-05

申请号：US12094238

申请日：2006-11-17

申请人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang ,  Eun-Jeong Shin ,  Hye-Kyung Jwa ,  Moon-sik Lee

发明人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang ,  Eun-Jeong Shin ,  Hye-Kyung Jwa ,  Moon-sik Lee

IPC分类号： H04B7/208

CPC分类号： H04B7/061 ,  H04L1/06 ,  H04L1/1893 ,  H04L5/0023 ,  H04L5/0044

摘要： The present invention relates to a packet data transmission method in an OFDMA system and an apparatus thereof. The present invention provides a user packet data transmission method including generating a RACH burst for channel information estimation, selecting a first antenna among a plurality of antennas, transmitting the RACH burst through the first antenna to a base station, receiving a data transmission acceptance signal from the base station, in response to the RACH burst, transmitting user packet data through the first antenna when receiving a signal indicating that the data transmission is allowed, and selecting a second antenna that is difference from the first antenna and transmitting a RACH burst through the second antenna when receiving a signal indicating that the data transmission is not allowed, and a transmitting apparatus of a mobile station having the plurality of antennas. According to the present invention, the RACH burst and user packet data are transmitted by using a mobile station having a plurality of antennas in an LTE-applied OFDMA system, and therefore data transmission can be performed with a wide bandwidth and high data rate and a deep fading period that may occur during the data transmission can be reduced, thereby preventing call dropping and improving data transmission performance.

摘要翻译： 本发明涉及OFDMA系统中的分组数据传输方法及其装置。 本发明提供了一种用户分组数据传输方法，包括：生成用于信道信息估计的RACH脉冲串，选择多个天线中的第一天线，通过第一天线发送RACH脉冲串到基站;从基站接收数据传输接收信号; 所述基站响应于所述RACH突发，当接收到指示允许所述数据传输的信号时，通过所述第一天线发送用户分组数据，并且选择与所述第一天线不同并且通过所述第一天线发送RACH突发的第二天线 在接收到指示不允许数据传输的信号的第二天线以及具有多个天线的移动台的发送装置。 根据本发明，通过在LTE应用的OFDMA系统中使用具有多个天线的移动台来发送RACH突发和用户分组数据，因此可以以宽带宽和高数据速率进行数据传输，并且 可以减少在数据传输期间可能发生的深度衰落周期，从而防止呼叫丢弃并提高数据传输性能。

公开(公告)号：US20060126753A1

公开(公告)日：2006-06-15

申请号：US11284688

申请日：2005-11-21

申请人： Hye-Kyung Jwa ,  Kyung Park ,  Seung-Chan Bang ,  Young-Hoon Kim ,  Sang-Woo Nam

发明人： Hye-Kyung Jwa ,  Kyung Park ,  Seung-Chan Bang ,  Young-Hoon Kim ,  Sang-Woo Nam

IPC分类号： H04L1/02 ,  H04L27/06 ,  H04B1/10

CPC分类号： H04B7/0897 ,  H04B1/7103 ,  H04B1/71052 ,  H04L25/0204

摘要： An apparatus and method for detecting a space-time multi-user signal are disclosed. The apparatus includes: an RF/IF processing unit for converting received signals through an array antenna into digital baseband signals; a splitting unit for dividing the digital baseband signals into data signals and reference signals; a estimating unit for estimating a delay time information and a channel impulse response; a vector generating unit for receiving the reference signals and the delay time information of to thereby generate a beamforming weight vector; a matrix generating unit for receiving the channel impulse response and the beamforming weight vector to there by generate a system matrix; a filtering unit for receiving the data signals and the system matrix to multiply the system matrix to data per each antenna; a antenna combining unit for combining signals outputted from the filtering unit; and an interference cancelling unit for cancelling an interference signal.

公开(公告)号：US08102927B2

公开(公告)日：2012-01-24

申请号：US12160555

申请日：2007-01-12

申请人： Nam-Il Kim ,  Il-Gyu Kim ,  Hye-Kyung Jwa ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Nam-Il Kim ,  Il-Gyu Kim ,  Hye-Kyung Jwa ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04K1/10 ,  H04L5/12

CPC分类号： H04L27/2615 ,  H04L27/2614

摘要： The present invention provides an OFDM symbol generating apparatus. The OFDM symbol generating apparatus generates a plurality of weight-applied symbol groups by applying a plurality of weights to a digital modulation symbol group, and generates a plurality of IFFT symbol groups by performing an IFFT operation on the plurality of weight-applied symbol groups. Subsequently, an IFFT symbol group having the minimum PAPR is selected from among the plurality of IFFT symbol groups such that a characteristic of a PAPR can be improved without reducing data transmission speed.

摘要翻译： 本发明提供一种OFDM符号生成装置。 OFDM符号生成装置通过对数字调制符号组应用多个权重来生成多个加权的符号组，并通过对多个加权符号组进行IFFT运算来生成多个IFFT符号组。 随后，从多个IFFT符号组中选择具有最小PAPR的IFFT符号组，使得可以在不降低数据传输速度的情况下提高PAPR的特性。

公开(公告)号：US07623563B2

公开(公告)日：2009-11-24

申请号：US11284688

申请日：2005-11-21

申请人： Hye-Kyung Jwa ,  Kyung Park ,  Seung-Chan Bang ,  Young-Hoon Kim ,  Sang-Woo Nam

发明人： Hye-Kyung Jwa ,  Kyung Park ,  Seung-Chan Bang ,  Young-Hoon Kim ,  Sang-Woo Nam

IPC分类号： H04B1/00

CPC分类号： H04B7/0897 ,  H04B1/7103 ,  H04B1/71052 ,  H04L25/0204

摘要： An apparatus and method for detecting a space-time multi-user signal are disclosed. The apparatus includes: an RF/IF processing unit for converting received signals through an array antenna into digital baseband signals; a splitting unit for dividing the digital baseband signals into data signals and reference signals; a estimating unit for estimating a delay time information and a channel impulse response; a vector generating unit for receiving the reference signals and the delay time information of to thereby generate a beamforming weight vector; a matrix generating unit for receiving the channel impulse response and the beamforming weight vector to there by generate a system matrix; a filtering unit for receiving the data signals and the system matrix to multiply the system matrix to data per each antenna; a antenna combining unit for combining signals outputted from the filtering unit; and an interference cancelling unit for cancelling an interference signal.

摘要翻译： 公开了一种用于检测时空多用户信号的装置和方法。 该装置包括：RF / IF处理单元，用于将通过阵列天线的接收信号转换为数字基带信号; 分割单元，用于将数字基带信号分割成数据信号和参考信号; 用于估计延迟时间信息和信道脉冲响应的估计单元; 矢量生成单元，用于接收参考信号和延迟时间信息，从而生成波束形成权重向量; 矩阵生成单元，用于通过生成系统矩阵来接收信道脉冲响应和波束成形权重向量到达那里; 用于接收数据信号和系统矩阵的滤波单元，以将系统矩阵乘以每个天线的数据; 天线组合单元，用于组合从所述滤波单元输出的信号; 以及用于消除干扰信号的干扰消除单元。

公开(公告)号：US20090003478A1

公开(公告)日：2009-01-01

申请号：US12160555

申请日：2007-01-12

申请人： Nam-Il Kim ,  Il-Gyu Kim ,  Hye-Kyung Jwa ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Nam-Il Kim ,  Il-Gyu Kim ,  Hye-Kyung Jwa ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04L27/28

CPC分类号： H04L27/2615 ,  H04L27/2614

摘要： The present invention provides an OFDM symbol generating apparatus. The OFDM symbol generating apparatus generates a plurality of weight-applied symbol groups by applying a plurality of weights to a digital modulation symbol group, and generates a plurality of IFFT symbol groups by performing an IFFT operation on the plurality of weight-applied symbol groups. Subsequently, an IFFT symbol group having the minimum PAPR is selected from among the plurality of IFFT symbol groups such that a characteristic of a PAPR can be improved without reducing data transmission speed.

摘要翻译： 本发明提供一种OFDM符号生成装置。 OFDM符号生成装置通过对数字调制符号组应用多个权重来生成多个加权的符号组，并通过对多个加权符号组进行IFFT运算来生成多个IFFT符号组。 随后，从多个IFFT符号组中选择具有最小PAPR的IFFT符号组，使得可以在不降低数据传输速度的情况下提高PAPR的特性。

公开(公告)号：US07313417B2

公开(公告)日：2007-12-25

申请号：US10977059

申请日：2004-10-29

申请人： Il-Gyu Kim ,  Hye-Kyung Jwa ,  Seung-Chan Bang

发明人： Il-Gyu Kim ,  Hye-Kyung Jwa ,  Seung-Chan Bang

IPC分类号： H04M1/00 ,  G01S1/00

CPC分类号： H04B7/086 ,  H01Q1/246 ,  H01Q3/24 ,  H01Q3/2605 ,  H04B7/0617

摘要： Disclosed is a transceiver for a base station with a smart antenna having a plurality of antennas. The transceiver comprises: a multipath searching unit for searching multipath delay information for each demodulation channel; a demodulating unit for forming an adaptive beam for each demodulation channel by using the multipath delay information for each demodulation channel for receiving signals and performing demodulation to the received signals and outputting at least one adaptive beam weight vector; a controlling unit for selecting at least one downlink beam index for each channel; and a modulating unit for selecting the downlink switched beams and forming switching beam for modulating signals of each channel and outputting the modulated signals in downlink.

摘要翻译： 公开了一种具有具有多个天线的智能天线的基站的收发器。 收发器包括：多路径搜索单元，用于搜索每个解调信道的多径延迟信息; 解调单元，用于通过使用用于接收信号的每个解调信道的多径延迟信息和对接收到的信号执行解调并输出至少一个自适应波束权重向量来为每个解调信道形成自适应波束; 控制单元，用于为每个信道选择至少一个下行链路波束索引; 以及用于选择下行链路切换波束并形成用于调制每个信道的信号的切换波束并在下行链路中输出调制信号的调制单元。

公开(公告)号：US08594238B2

公开(公告)日：2013-11-26

申请号：US12967556

申请日：2010-12-14

申请人： Hye-Kyung Jwa ,  Il-Gyu Kim ,  Mu-Yong Shin ,  Hyung-Cheol Shin ,  Duk-Hyun You

发明人： Hye-Kyung Jwa ,  Il-Gyu Kim ,  Mu-Yong Shin ,  Hyung-Cheol Shin ,  Duk-Hyun You

IPC分类号： H04L27/00

CPC分类号： H04L25/022 ,  H04L25/024

摘要： A method and apparatus for estimating a channel in a frequency domain are provided. The apparatus acquires frequency selectivity information using a cell-specific reference signal, selects a channel estimation scheme using a user specific reference signal according to the acquired frequency selectivity information, and estimates a frequency channel using the selected channel estimation scheme. Accordingly, more accurate channel estimation with respect to a region to which a physical downstream shared channel is allocated can be performed.

摘要翻译： 提供了一种用于估计频域中的信道的方法和装置。 该装置使用小区特定参考信号获取频率选择性信息，根据获取的频率选择性信息，使用用户特定参考信号选择信道估计方案，并使用所选择的信道估计方案估计频道。 因此，可以执行关于分配物理下行共享信道的区域的更准确的信道估计。