公开(公告)号：US07860452B2

公开(公告)日：2010-12-28

申请号：US11777649

申请日：2007-07-13

申请人： Chang Wook Ahn ,  Young-Doo Kim ,  Eung Sun Kim

发明人： Chang Wook Ahn ,  Young-Doo Kim ,  Eung Sun Kim

IPC分类号： H04B7/15

CPC分类号： H04W16/10 ,  H04B7/15542 ,  H04B7/15557 ,  H04B7/2606 ,  H04W16/26 ,  H04W72/08 ,  H04W84/047

摘要： A method of assigning a carrier for mitigating inter-cell interference in a fixed relay based communication system is provided. In a normal mode, the method includes defining at least one sector group by grouping cells at least two tiers away from each other; selecting a single sector group; and assigning, by a base station of the selected sector group, a first carrier to a relay station or a mobile station which is located in a coverage area of the base station. In a relay mode, the method includes determining whether a current mode is a normal mode or a relay mode; determining whether a base station is included in a selected sector group; and assigning carriers to a relay station or a mobile station belonging to the base station, when the current mode is the normal mode and the base station is included in the selected sector group.

摘要翻译： 提供了一种在基于固定中继的通信系统中分配用于减轻小区间干扰的载波的方法。 在正常模式中，该方法包括通过将小区分组至少两个彼此分开来定义至少一个扇区组; 选择单个扇区组; 以及由所选择的扇区组的基站将第一载波分配给位于所述基站的覆盖区域中的中继站或移动台。 在中继模式中，该方法包括确定当前模式是正常模式还是中继模式; 确定基站是否包括在所选择的扇区组中; 以及当所述当前模式是正常模式并且所述基站被包括在所选择的扇区组中时，将载波分配给属于所述基站的中继站或移动站。

公开(公告)号：US07751464B2

公开(公告)日：2010-07-06

申请号：US11768563

申请日：2007-06-26

申请人： Young-Doo Kim ,  Eung Sun Kim ,  Chang Wook Ahn ,  Gi-Hong Im ,  Jong-Bu Lim ,  Tae-Won Yune ,  Chan-Ho Choi

发明人： Young-Doo Kim ,  Eung Sun Kim ,  Chang Wook Ahn ,  Gi-Hong Im ,  Jong-Bu Lim ,  Tae-Won Yune ,  Chan-Ho Choi

IPC分类号： H04L27/30

CPC分类号： H04B1/71072 ,  H04L27/2636 ,  H04L27/2647

摘要： A method and apparatus for transmitting and receiving data by performing an iterative multi-user detection is provided. The apparatus includes: a receives a transmission signal and generates a received signal, the transmission signal being generated by modulating a single carrier signal via a modulation process, specialized for each user, in a wireless communication system; an interference canceled signal generator which generates an interference canceled signal by canceling a signal interference using a demodulated signal with respect to the received signal, the signal interference being caused by an other user; and a demodulated signal generator which generates the demodulated signal by demodulating the received signal via a demodulation process using the interference canceled signal, the demodulation process being specialized for each user, wherein the demodulated signal, which is generated by performing the generating of the interference canceled signal and the generating of the demodulated signal at least once, is adopted as a final demodulated signal.

摘要翻译： 提供了一种通过执行迭代多用户检测来发送和接收数据的方法和装置。 该装置包括：a接收传输信号并产生接收信号，该传输信号是通过在无线通信系统中经由专用于每个用户的调制过程调制单载波信号产生的; 干扰消除信号发生器，其通过使用相对于接收信号的解调信号消除信号干扰来产生干扰消除信号，所述信号干扰由另一用户引起; 以及解调信号发生器，其通过使用干扰消除信号的解调处理解调接收信号来产生解调信号，解调处理专用于每个用户，其中通过执行消除干扰的产生而产生的解调信号 信号和至少一次解调信号的产生被采用作为最终的解调信号。

公开(公告)号：US20080181318A1

公开(公告)日：2008-07-31

申请号：US11859866

申请日：2007-09-24

申请人： Young-Doo KIM ,  Eung Sun KIM ,  Chang Wook AHN

发明人： Young-Doo KIM ,  Eung Sun KIM ,  Chang Wook AHN

IPC分类号： H04L27/28 ,  H04B7/14 ,  H04J1/10

CPC分类号： H04L5/0007 ,  H04B7/15557 ,  H04B7/2606 ,  H04L1/0009 ,  H04L5/003 ,  H04L25/0204 ,  H04L2001/0097

摘要： A method of controlling data transmission mode in an orthogonal frequency division multiple access (OFDMA) wireless relay system and an apparatus using the method are provided. The method of controlling data transmission mode includes: dividing all frequency bands of an OFDM signal into a frequency band group including at least one subcarrier band; estimating a plurality of channels of wireless links which respectively link a base station (BS), at least one relay station (RS), and a mobile station (MS) with respect to the at least one subcarrier band; selecting any one of a plurality of data transmission modes based on a feature of the estimated plurality of channels of wireless links with respect to the frequency band group; and applying the selected data transmission mode to all of the at least one subcarrier bands in the frequency band group to transmit data.

摘要翻译： 提供了一种在正交频分多址（OFDMA）无线中继系统中控制数据传输模式的方法和使用该方法的装置。 控制数据传输模式的方法包括：将OFDM信号的所有频带划分成包括至少一个子载波频带的频带组; 估计相对于所述至少一个子载波频带分别链接基站（BS），至少一个中继站（RS）和移动站（MS）的多个无线链路的信道; 基于相对于频带组的估计的无线链路的多个信道的特征，选择多个数据传输模式中的任何一个; 以及将所选择的数据传输模式应用于频带组中的所有至少一个子载波频带以发送数据。

公开(公告)号：US20080045212A1

公开(公告)日：2008-02-21

申请号：US11638575

申请日：2006-12-14

申请人： Young-Doo Kim ,  Eung Sun Kim ,  Chang Wook Ahn ,  Seung Hoon Nam

发明人： Young-Doo Kim ,  Eung Sun Kim ,  Chang Wook Ahn ,  Seung Hoon Nam

IPC分类号： H04Q7/20

CPC分类号： H04W28/18 ,  H04L1/0025 ,  H04L1/0668 ,  H04L2001/0097 ,  H04W40/22

摘要： A data transmission method in a wireless relay system, and a method of selecting an optimal transmission mode based on a channel capacity of an individual link that is measured by a mobile station. The data transmission method includes: transmitting a first ratio of first partial data of the data from a base station to a mobile station; transmitting a second ratio of second partial data of the data from the base station to a first relay station; and forwarding the second partial data from the first relay station to the mobile station, wherein the first ratio or the second ratio is determined based on any one of a channel capacity of a first link between the base station and the mobile station, and a channel capacity of a second link between the first relay station and the mobile station.

摘要翻译： 无线中继系统中的数据传输方法以及基于由移动台测量的各个链路的信道容量来选择最优传输模式的方法。 数据传输方法包括：从基站向移动台发送数据的第一部分数据的第一比率; 将来自基站的数据的第二部分数据的第二比率发送到第一中继站; 以及将所述第二部分数据从所述第一中继站转发到所述移动站，其中，所述第一比率或所述第二比率基于所述基站和所述移动站之间的第一链路的信道容量和信道 在第一中继站和移动站之间的第二链路的容量。

公开(公告)号：US20080037673A1

公开(公告)日：2008-02-14

申请号：US11822872

申请日：2007-07-10

申请人： Chang-Wook Ahn ,  Sang-Boh Yun ,  Eung-Sun Kim ,  Harald Haas ,  Mesleh Raed ,  Tae-In Hyon ,  Stepher McLaughlin

发明人： Chang-Wook Ahn ,  Sang-Boh Yun ,  Eung-Sun Kim ,  Harald Haas ,  Mesleh Raed ,  Tae-In Hyon ,  Stepher McLaughlin

IPC分类号： H04L23/02 ,  G06F17/10 ,  H04L27/28

CPC分类号： H04L1/0656 ,  H04B7/0413 ,  H04B7/0691 ,  H04L1/0063

摘要： A spatial modulation method and transmitting and receiving apparatuses using the spatial modulation method in a MIMO system are provided. The spatial modulation method uses an index of an activated antenna and a signal modulation constellation as an information source. The spatial modulation method is applied to the transmitting apparatus. The receiving apparatus uses a spatial modulation detection method in which a channel path gain is repeatedly multiplied to detect the spatially modulated signal efficiently.

摘要翻译： 提供了一种使用MIMO系统中的空间调制方法的空间调制方法和发送和接收装置。 空间调制方法使用激活天线的索引和信号调制星座作为信息源。 空间调制方法应用于发送装置。 接收装置使用空间调制检测方法，其中重复地乘以信道路径增益以有效地检测空间调制信号。

公开(公告)号：US20070287465A1

公开(公告)日：2007-12-13

申请号：US11731761

申请日：2007-03-30

申请人： Tae-In Hyon ,  Dae-Young Park ,  Eun-Ju Kim ,  Nak-Myeong Kim ,  Sang-Boh Yun ,  Chang-Wook Ahn ,  Sang-Youn Oh

发明人： Tae-In Hyon ,  Dae-Young Park ,  Eun-Ju Kim ,  Nak-Myeong Kim ,  Sang-Boh Yun ,  Chang-Wook Ahn ,  Sang-Youn Oh

IPC分类号： H04Q7/20

CPC分类号： H04W16/14

摘要： A method and system for transmitting and receiving data to prevent Adjacent Channel Interference (ACI) in a Cognitive Radio (CR) communication system are provided, in which a second system using a second frequency band measures a first channel interference that a first frequency band used by a first system causes to the second frequency band, determines a frequency spreading parameter according to the first channel interference, measures a second channel interference that the second frequency band causes to the first frequency band, receives link information from the first system according to the second channel interference, determines a power allocation map according to the link information and transmits and receives data according to the frequency spreading parameter and the power allocation map.

摘要翻译： 提供一种用于发送和接收数据以防止认知无线电（CR）通信系统中的相邻信道干扰（ACI）的方法和系统，其中使用第二频带的第二系统测量第一频带干扰，使用第一频带 通过第一系统引起第二频带，根据第一信道干扰确定频率扩展参数，测量第二频带对第一频带引起的第二信道干扰，根据第一频带从第一系统接收链路信息 第二信道干扰，根据链路信息确定功率分配图，并根据频率扩展参数和功率分配图发送和接收数据。

公开(公告)号：US20070201399A1

公开(公告)日：2007-08-30

申请号：US11701918

申请日：2007-02-02

申请人： Ok-Seon Lee ,  Chang-Wook Ahn ,  Sang-Boh Yun ,  Sung-Hyun Cho ,  Won-Hyoung Park ,  Chi-Hyun Park

发明人： Ok-Seon Lee ,  Chang-Wook Ahn ,  Sang-Boh Yun ,  Sung-Hyun Cho ,  Won-Hyoung Park ,  Chi-Hyun Park

IPC分类号： H04Q7/00

CPC分类号： H04W72/1284 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/1289 ,  H04W74/06

摘要： Disclosed is a method for requesting allocation of uplink bandwidth for uplink data transmission and allocating the uplink bandwidth in a wireless communication system. In the method, when a number of uplink bandwidth allocation requests having occurred in a certain interval is different from that of scheduled uplink bandwidth allocation requests, uplink bandwidths are allocated to the extent that the occurred uplink bandwidth allocation requests can be implanted. Herein, the uplink bandwidth allocation requests occur in an MS according to services. Accordingly, as the uplink bandwidth allocation requests increase, uplink bandwidths also increase. However, as the uplink bandwidth allocation requests decrease, uplink bandwidths also decrease.

摘要翻译： 公开了一种在无线通信系统中请求分配用于上行链路数据传输的上行链路带宽并分配上行链路带宽的方法。 在该方法中，当在一定间隔中发生的上行带宽分配请求的数量与调度的上行链路带宽分配请求不同的上行带宽分配到可以植入所发生的上行链路带宽分配请求的程度。 这里，上行带宽分配请求根据业务发生在MS中。 因此，随着上行带宽分配请求的增加，上行带宽也增加。 然而，随着上行带宽分配请求的减少，上行带宽也减少。

公开(公告)号：US08199693B2

公开(公告)日：2012-06-12

申请号：US11859925

申请日：2007-09-24

申请人： Duck Dong Hwang ,  Eung Sun Kim ,  Young-Doo Kim ,  Chang Wook Ahn

发明人： Duck Dong Hwang ,  Eung Sun Kim ,  Young-Doo Kim ,  Chang Wook Ahn

IPC分类号： H04B7/185 ,  H04B7/00 ,  H04B1/38 ,  H01Q11/12

CPC分类号： H04W52/46 ,  H04B7/022 ,  H04B7/026 ,  H04W52/248

摘要： A method and apparatus for controlling power in a decode-and-forward (DF) relay system is provided. The method of controlling power in a DF relay system includes: acquiring first channel information of a first link between a source node and a destination node, second channel information of a second link between the source node and a relay node, and third channel information of a third link between the relay node and the destination node, by using a pilot signal; determining a power level of the source node from the acquired first through third channel information; and feeding back the determined power level to the source node and the relay node.

摘要翻译： 提供了一种用于在解码 - 转发（DF）中继系统中控制功率的方法和装置。 控制DF中继系统功率的方法包括：获取源节点与目的节点之间的第一链路的第一信道信息，源节点与中继节点之间的第二链路的第二信道信息，以及第 通过使用导频信号在中继节点和目的地节点之间的第三链路; 从所获取的第一到第三信道信息确定源节点的功率电平; 并将确定的功率电平反馈到源节点和中继节点。

公开(公告)号：US08094743B2

公开(公告)日：2012-01-10

申请号：US11822872

申请日：2007-07-10

申请人： Chang-Wook Ahn ,  Sang-Boh Yun ,  Eung-Sun Kim ,  Harald Haas ,  Mesleh Raed ,  Tae-In Hyon ,  Stephen McLaughlin

发明人： Chang-Wook Ahn ,  Sang-Boh Yun ,  Eung-Sun Kim ,  Harald Haas ,  Mesleh Raed ,  Tae-In Hyon ,  Stephen McLaughlin

IPC分类号： H04B7/02

CPC分类号： H04L1/0656 ,  H04B7/0413 ,  H04B7/0691 ,  H04L1/0063

摘要： A spatial modulation method and transmitting and receiving apparatuses using the spatial modulation method in a MIMO system are provided. The spatial modulation method uses an index of an activated antenna and a signal modulation constellation as an information source. The spatial modulation method is applied to the transmitting apparatus. The receiving apparatus uses a spatial modulation detection method in which a channel path gain is repeatedly multiplied to detect the spatially modulated signal efficiently.

摘要翻译： 提供了一种使用MIMO系统中的空间调制方法的空间调制方法和发送和接收装置。 空间调制方法使用激活天线的索引和信号调制星座作为信息源。 空间调制方法应用于发送装置。 接收装置使用空间调制检测方法，其中重复地乘以信道路径增益以有效地检测空间调制信号。

公开(公告)号：US06615382B1

公开(公告)日：2003-09-02

申请号：US09648743

申请日：2000-08-28

申请人： Woo-shik Kang ,  Kyung Hun Jang ,  Chung-gu Kang ,  Chang-wook Ahn

发明人： Woo-shik Kang ,  Kyung Hun Jang ,  Chung-gu Kang ,  Chang-wook Ahn

IPC分类号： H04L108

CPC分类号： H04L1/08 ,  H03M13/353 ,  H03M13/6306 ,  H03M13/6337 ,  H04L1/0009 ,  H04L1/007 ,  H04L1/0072 ,  H04L1/1809 ,  H04L1/1816 ,  H04L1/189

摘要： A method for controlling errors in a wireless link layer using a simultaneous multiple copy scheme and an adaptive forward error correction (FEC) scheme in a wideband wireless communication is provided. The method for controlling errors in a link layer in wideband wireless communication using an automatic repeat request (ARQ) scheme, in which a wideband wireless channel is used for communication between a first node and a second node, includes the steps of (a) estimating the error ratio of a forward (a direction in which a cell is transmitted from the first node to the second node) channel using the state of a backward (a direction in which a cell is transmitted from the second node to the first node) channel, and transmitting a cell, in which a forward error correction (FEC) code having an encoding ratio that varies depending on the estimated error ratio is included in a protocol data unit (PDU) of a wireless link layer, through the forward channel and (b) re-transmitting the copy of a cell transmitted in the step (a), when feedback information that indicates that an error exists in the cell transmitted in the step (a) is received through the backward channel. It is possible to reduce the number of times of re-transmission by improving the probability of correcting forward errors using more error controlling bits as the state of the channel is worse and to minimize the waste of resources using less error controlling bits as the state of the channel is better, to thus obtain the optimal performance and guarantee the minimum delay time.

摘要翻译： 提供了一种在宽带无线通信中使用同时多重复制方案和自适应前向纠错（FEC）方案来控制无线链路层中的错误的方法。 使用宽带无线信道用于第一节点和第二节点之间的通信的自动重复请求（ARQ）方案来控制宽带无线通信中的链路层中的错误的方法包括以下步骤：（a）估计 使用反向的状态（从第二节点向第一节点发送小区的方向）信道的正向（小区从第一节点发送到第二节点的信道的方向）的错误率 ，并且发送小区，其中具有根据所估计的误码率而变化的编码率的前向纠错（FEC）码被包括在无线链路层的协议数据单元（PDU）中，通过前向信道和（ b）当通过反向信道接收到指示在步骤（a）中发送的小区中存在错误的反馈信息时，重传在步骤（a）中发送的小区的副本。 可以通过改善使用更多错误控制位来纠正前向错误的概率来减少重发次数，因为信道的状态更差，并且使用较少的错误控制位作为状态来最小化资源的浪费 通道更好，从而获得最佳性能并保证最短的延时时间。