公开(公告)号：US20100261498A1

公开(公告)日：2010-10-14

申请号：US12661759

申请日：2010-03-23

申请人： Jae-Yun Ko ,  Keun-Chul Hwang ,  Seung-Won Kang ,  Soon-Young Yoon ,  Won-Jin Sung ,  Byung-Seok Lee ,  Ji-Won Lee

发明人： Jae-Yun Ko ,  Keun-Chul Hwang ,  Seung-Won Kang ,  Soon-Young Yoon ,  Won-Jin Sung ,  Byung-Seok Lee ,  Ji-Won Lee

IPC分类号： H04B7/00

CPC分类号： H04B7/0617 ,  H04B7/0417 ,  H04W52/40

摘要： An apparatus is operable to control power of a base station in a distributed Multiple Input Multiple Output (MIMO) wireless communication system. At least one beamforming matrix is used for processing transmission signals to terminals included in a terminal set for a multiple access is determined. Minimum power values required for satisfying a minimum transmission rate of the terminals are determined. Whether optimum power values exist is determined using the minimum power values, the beamforming matrix, and a limit transmission power of the base station. When the optimum power values exist, transmission power values for respective terminals are determined in a range meeting the limit transmission power of the base station.

摘要翻译： 一种装置可操作用于在分布式多输入多输出（MIMO）无线通信系统中控制基站的功率。 至少一个波束成形矩阵被用于处理传输信号到包括在多路访问的终端机中的终端。 确定满足终端的最小传输速率所需的最小功率值。 使用最小功率值，波束形成矩阵和基站的限制发射功率来确定是否存在最佳功率值。 当存在最佳功率值时，在满足基站的限制发送功率的范围内确定各个终端的发送功率值。

公开(公告)号：US08818440B2

公开(公告)日：2014-08-26

申请号：US12661759

申请日：2010-03-23

申请人： Jae-Yun Ko ,  Keun-Chul Hwang ,  Seung-Won Kang ,  Soon-Young Yoon ,  Won-Jin Sung ,  Byung-Seok Lee ,  Ji-Won Lee

发明人： Jae-Yun Ko ,  Keun-Chul Hwang ,  Seung-Won Kang ,  Soon-Young Yoon ,  Won-Jin Sung ,  Byung-Seok Lee ,  Ji-Won Lee

IPC分类号： H04B7/00

CPC分类号： H04B7/0617 ,  H04B7/0417 ,  H04W52/40

摘要： An apparatus is operable to control power of a base station in a distributed Multiple Input Multiple Output (MIMO) wireless communication system. At least one beamforming matrix is used for processing transmission signals to terminals included in a terminal set for a multiple access is determined. Minimum power values required for satisfying a minimum transmission rate of the terminals are determined. Whether optimum power values exist is determined using the minimum power values, the beamforming matrix, and a limit transmission power of the base station. When the optimum power values exist, transmission power values for respective terminals are determined in a range meeting the limit transmission power of the base station.

摘要翻译： 一种装置可操作以在分布式多输入多输出（MIMO）无线通信系统中控制基站的功率。 至少一个波束成形矩阵被用于处理传输信号到包括在多路访问的终端机中的终端。 确定满足终端的最小传输速率所需的最小功率值。 使用最小功率值，波束形成矩阵和基站的限制发射功率来确定是否存在最佳功率值。 当存在最佳功率值时，在满足基站的限制发送功率的范围内确定各个终端的发送功率值。

公开(公告)号：US20110188599A1

公开(公告)日：2011-08-04

申请号：US13019366

申请日：2011-02-02

申请人： Seung-Won Kang ,  Sung-Woo Park ,  Soon-Young Yoon ,  Keun-Chul Hwang

发明人： Seung-Won Kang ,  Sung-Woo Park ,  Soon-Young Yoon ,  Keun-Chul Hwang

IPC分类号： H04B7/02

CPC分类号： H04B7/02

摘要： A method and an apparatus for pre-scheduling in a closed-loop multiple user multiple input multiple output (MU-MIMO) antenna system. A base station receives channel information representing a downlink channel condition of each mobile station from mobile stations in a cell, and determines a candidate user group for each of frequency bands included in an entire frequency band, based on the channel information, the candidate user group including mobile stations to which resources can be simultaneously allocated. The base station also instructs a mobile station included in each candidate user group to transmit a sounding signal through a corresponding frequency band. If the sounding signal is received through the corresponding frequency band, the base station performs a scheduling with regard to the mobile station included in each candidate user group.

摘要翻译： 一种用于在闭环多用户多输入多输出（MU-MIMO）天线系统中进行预调度的方法和装置。 基站从小区中的移动台接收表示各移动站的下行链路信道状态的信道信息，并根据信道信息确定候选用户组，该候选用户组中包含在整个频带中的频带中的每个频带，候选用户组 包括可以同时分配资源的移动台。 基站还指示包括在每个候选用户组中的移动台通过对应的频带发送探测信号。 如果通过相应的频带接收到探测信号，则基站对每个候选用户组中包括的移动台进行调度。

公开(公告)号：US08711964B2

公开(公告)日：2014-04-29

申请号：US13019366

申请日：2011-02-02

申请人： Seung-Won Kang ,  Sung-Woo Park ,  Soon-Young Yoon ,  Keun-Chul Hwang

发明人： Seung-Won Kang ,  Sung-Woo Park ,  Soon-Young Yoon ,  Keun-Chul Hwang

IPC分类号： H04B7/02

CPC分类号： H04B7/02

摘要： A method and an apparatus for pre-scheduling in a closed-loop multiple user multiple input multiple output (MU-MIMO) antenna system. A base station receives channel information representing a downlink channel condition of each mobile station from mobile stations in a cell, and determines a candidate user group for each of frequency bands included in an entire frequency band, based on the channel information, the candidate user group including mobile stations to which resources can be simultaneously allocated. The base station also instructs a mobile station included in each candidate user group to transmit a sounding signal through a corresponding frequency band. If the sounding signal is received through the corresponding frequency band, the base station performs a scheduling with regard to the mobile station included in each candidate user group.

摘要翻译： 一种用于在闭环多用户多输入多输出（MU-MIMO）天线系统中进行预调度的方法和装置。 基站从小区中的移动台接收表示各移动站的下行链路信道状态的信道信息，并根据信道信息确定候选用户群，该候选用户群基于频道信息，包含在候选用户组 包括可以同时分配资源的移动台。 基站还指示包括在每个候选用户组中的移动台通过对应的频带发送探测信号。 如果通过相应的频带接收到探测信号，则基站对每个候选用户组中包括的移动台进行调度。

公开(公告)号：US20110188388A1

公开(公告)日：2011-08-04

申请号：US12927236

申请日：2010-11-10

申请人： Jae-Yun Ko ,  Sung-Ho Lee ,  Soon-Young Yoon ,  June Moon ,  Chung-Ryul Chang ,  Sung-Woo Park ,  Seung-Won Kang ,  Ho-Joong Kwon

发明人： Jae-Yun Ko ,  Sung-Ho Lee ,  Soon-Young Yoon ,  June Moon ,  Chung-Ryul Chang ,  Sung-Woo Park ,  Seung-Won Kang ,  Ho-Joong Kwon

IPC分类号： H04W24/02

CPC分类号： H04W72/082 ,  H04J11/0053 ,  H04W52/146 ,  H04W52/346

摘要： A method and an apparatus maximize the capacity of a wireless communication network by taking into consideration inter-cell interference coordination. A home cell's capacity sensitivity to interference is calculated. At least one neighbor cell's capacity sensitivity to interference is collected. And at least one UE located in the home cell is scheduled based on the home cell's capacity sensitivity and the neighbor cell's capacity sensitivity. Accordingly, it is possible to achieve power and allocation control to maximize the capacity of the overall network including neighbor cells increase the system capacity in a cellular system in which inter-cell interference is large, and adaptively perform a UE scheduling in real time to changing distribution of UEs because information on a change in the capacity of each cell is shared by periods.

摘要翻译： 一种方法和装置通过考虑小区间干扰协调来使无线通信网络的容量最大化。 计算家庭电池容量对干扰的敏感度。 收集至少一个相邻小区的容量对干扰的敏感度。 并且基于家庭小区的容量灵敏度和相邻小区的容量灵敏度来调度位于家庭小区中的至少一个UE。 因此，可以实现功率和分配控制，以使包括邻居小区在内的整个网络的容量最大化，增加小区间干扰较大的蜂窝系统中的系统容量，并且实时自适应地执行UE调度以改变 因为关于每个小区的容量的变化的信息被周期共享的UE的分配。

公开(公告)号：US08848628B2

公开(公告)日：2014-09-30

申请号：US12927236

申请日：2010-11-10

申请人： Jae-Yun Ko ,  Sung-Ho Lee ,  Soon-Young Yoon ,  June Moon ,  Chung-Ryul Chang ,  Sung-Woo Park ,  Seung-Won Kang ,  Ho-Joong Kwon

发明人： Jae-Yun Ko ,  Sung-Ho Lee ,  Soon-Young Yoon ,  June Moon ,  Chung-Ryul Chang ,  Sung-Woo Park ,  Seung-Won Kang ,  Ho-Joong Kwon

IPC分类号： H04W4/00

CPC分类号： H04W72/082 ,  H04J11/0053 ,  H04W52/146 ,  H04W52/346

摘要： A method and an apparatus maximize the capacity of a wireless communication network by taking into consideration inter-cell interference coordination. A home cell's capacity sensitivity to interference is calculated. At least one neighbor cell's capacity sensitivity to interference is collected. And at least one UE located in the home cell is scheduled based on the home cell's capacity sensitivity and the neighbor cell's capacity sensitivity. Accordingly, it is possible to achieve power and allocation control to maximize the capacity of the overall network including neighbor cells increase the system capacity in a cellular system in which inter-cell interference is large, and adaptively perform a UE scheduling in real time to changing distribution of UEs because information on a change in the capacity of each cell is shared by periods.

摘要翻译： 一种方法和装置通过考虑小区间干扰协调来使无线通信网络的容量最大化。 计算家庭电池容量对干扰的敏感度。 收集至少一个相邻小区的容量对干扰的敏感度。 并且基于家庭小区的容量灵敏度和相邻小区的容量灵敏度来调度位于家庭小区中的至少一个UE。 因此，可以实现功率和分配控制，以使包括邻居小区在内的整个网络的容量最大化，增加小区间干扰较大的蜂窝系统中的系统容量，并且实时自适应地执行UE调度以改变 因为关于每个小区的容量的变化的信息被周期共享的UE的分配。

公开(公告)号：US08577303B2

公开(公告)日：2013-11-05

申请号：US12012382

申请日：2008-01-31

申请人： Keun-Chul Hwang ,  Sung-Ho Lee ,  Soon-Young Yoon ,  In-Kyu Lee ,  Seok-Hwan Park

发明人： Keun-Chul Hwang ,  Sung-Ho Lee ,  Soon-Young Yoon ,  In-Kyu Lee ,  Seok-Hwan Park

IPC分类号： H04B1/00

CPC分类号： H04B7/0808 ,  H04L25/0224

摘要： Provided is an apparatus and method for transmitting a channel sounding signal from a user terminal in a multiple antenna system. In the method, a channel for each of a plurality of antennas is estimated. The receiving signal power of each of the antennas is calculated using the channel information obtained through the channel estimation. The antenna with the highest RX signal power is selected. Therefore, it is possible to enhance the signal reception performance of the user terminal.

摘要翻译： 提供了一种用于从多天线系统中的用户终端发送信道探测信号的装置和方法。 在该方法中，估计用于多个天线中的每一个的信道。 使用通过信道估计获得的信道信息来计算每个天线的接收信号功率。 选择RX信号功率最高的天线。 因此，可以提高用户终端的信号接收性能。

公开(公告)号：US08553793B2

公开(公告)日：2013-10-08

申请号：US12370896

申请日：2009-02-13

申请人： Chung-Ryul Chang ,  June Moon ,  Soon-Young Yoon ,  Keun-Chul Hwang ,  Sung-Woo Park

发明人： Chung-Ryul Chang ,  June Moon ,  Soon-Young Yoon ,  Keun-Chul Hwang ,  Sung-Woo Park

IPC分类号： H04B7/02

CPC分类号： H04J11/003 ,  H04B7/0417 ,  H04B7/0639 ,  H04B2201/70701 ,  H04L1/0026 ,  H04L25/0202 ,  H04L27/2626 ,  H04L27/2647

摘要： An apparatus and method for transmitting feedback information are provided. In a method of operating a transmitter for transmitting feedback information in a broadband wireless access system, the method includes estimating a channel of a second path on the basis of information of a received downlink frame, obtaining a channel representative value corresponding to the estimated channel of the second path, modulating the channel representative value by spreading the channel representative value to a sounding symbol to be transmitted, and transmitting the modulated sounding symbol through a first path.

摘要翻译： 提供了一种用于发送反馈信息的装置和方法。 一种在宽带无线接入系统中操作发送反馈信息的发送机的方法中，所述方法包括基于接收到的下行链路帧的信息来估计第二路径的信道，获得与所估计的信道的估计信道对应的信道代表值 第二路径，通过将信道代表值扩展到要发送的探测符号来调制信道代表值，并通过第一路径发送调制的探测符号。

公开(公告)号：US08145138B2

公开(公告)日：2012-03-27

申请号：US12383144

申请日：2009-03-20

申请人： Heon-Ki Chae ,  Keun-Chul Hwang ,  Soon-Young Yoon

发明人： Heon-Ki Chae ,  Keun-Chul Hwang ,  Soon-Young Yoon

IPC分类号： H04B1/00 ,  H04B7/00

CPC分类号： H04B7/086 ,  H04B7/0617

摘要： Provided are an apparatus and a method for removing an interference in a multiple antenna system. The apparatus includes a channel estimator, a covariance matrix generator, a weight calculator, and a beam forming unit. The channel estimator estimates a channel for a service cell and an interference channel for an adjacent cell using sounding signals via a plurality of antennas. The covariance matrix generator generates a covariance matrix as an average value from the interference channel. The weight calculator calculates a beam coefficient using the covariance matrix. The beam forming unit forms a beam using the beam coefficient.

摘要翻译： 提供了一种用于消除多天线系统中的干扰的装置和方法。 该装置包括信道估计器，协方差矩阵发生器，权重计算器和波束形成单元。 信道估计器使用经由多个天线的探测信号估计用于服务小区的信道和相邻小区的干扰信道。 协方差矩阵发生器产生协方差矩阵作为来自干扰信道的平均值。 权重计算器使用协方差矩阵计算光束系数。 光束形成单元使用光束系数形成光束。

公开(公告)号：US20090061842A1

公开(公告)日：2009-03-05

申请号：US12229925

申请日：2008-08-28

申请人： Sung-Woo Park ,  Keun-Chul Hwang ,  Soon-Young Yoon ,  Heon-Ki Chae

发明人： Sung-Woo Park ,  Keun-Chul Hwang ,  Soon-Young Yoon ,  Heon-Ki Chae

IPC分类号： H04W40/16

CPC分类号： H04W72/1231 ,  H04B7/0617 ,  H04W16/28 ,  H04W72/046

摘要： An apparatus and a method for interference cancellation in a wireless communication system are provided. The method includes receiving channel information from one or more terminals; classifying the terminals into terminals interfered by a neighbor cell and terminals not interfered by the neighbor cell based on the channel information of the terminals; and allocating the terminals interfered by the neighbor cell and the terminals not interfered by the neighbor cell into different resource regions. The transmitter forms the beam taking into consideration the neighbor-cell interference by acquiring the channel information of the neighbor-cell terminals interfered by the transmitter and the scheduled terminal information during beamforming.

摘要翻译： 提供了一种用于无线通信系统中的干扰消除的装置和方法。 该方法包括从一个或多个终端接收信道信息; 根据终端的信道信息将终端分类为相邻小区干扰的终端和不被邻居小区干扰的终端; 并且分配由相邻小区干扰的终端和不被相邻小区干扰的终端进入不同的资源区域。 考虑到相邻小区干扰，发射机通过获取发射机干扰的邻居小区的信道信息和波束形成过程中调度的终端信息来形成波束。