公开(公告)号：US08145207B2

公开(公告)日：2012-03-27

申请号：US12378885

申请日：2009-02-20

申请人： Sung-Soo Hwang ,  Jin-Ghoo Choi ,  Chi-Hyun Park ,  Sang-Boh Yun ,  Seung-Hee Han

发明人： Sung-Soo Hwang ,  Jin-Ghoo Choi ,  Chi-Hyun Park ,  Sang-Boh Yun ,  Seung-Hee Han

IPC分类号： H04W24/00

CPC分类号： H04B7/15542 ,  H04B1/1027

摘要： An apparatus and method for avoiding interference between a base station and a relay station when using full duplex relay in a multi-hop relay wireless communication system are provided. An operation of a mobile station includes measuring an strength of a receive signal from a base station and an strength of a receive signal from an relay station, calculating a receive signal strength ratio of base station to relay station by dividing the strength of the receive signal from the base station by the strength of the receive signal from the relay station, determining if interference occurs using the receive signal strength ratio, and transmitting a control message representing if interference occurs.

摘要翻译： 提供了一种用于在多跳中继无线通信系统中使用全双工中继时避免基站与中继站之间的干扰的装置和方法。 移动站的操作包括测量来自基站的接收信号的强度和来自中继站的接收信号的强度，通过除去接收信号的强度来计算基站到中继站的接收信号强度比 从基站通过来自中继站的接收信号的强度，使用接收信号强度比确定是否发生干扰，以及发送表示是否发生干扰的控制消息。

公开(公告)号：US08139548B2

公开(公告)日：2012-03-20

申请号：US11851448

申请日：2007-09-07

申请人： Chi-Hyun Park ,  Young-Hoon Kwon ,  Sang-Boh Yun

发明人： Chi-Hyun Park ,  Young-Hoon Kwon ,  Sang-Boh Yun

IPC分类号： H04J3/00

CPC分类号： H04B1/126

摘要： A method and apparatus for removing interference from a UpLink (UL) signal in a Time Division Duplex (TDD) system are provided. The method includes determining whether a section for receiving an UpLink (UL) signal from the MS overlaps with sections for sending a DownLink (DL) signal of neighbor BSs in service, the neighbor BSs sending the DL signal to another MS, when the UL signal section overlaps with the DL sections of the neighbor BSs, detecting DL transmit signal information from the neighbor BSs transmitting in the overlapping sections, and removing interference from the UL signal using the detected transmit signal information. Accordingly, the accuracy of detecting the signal from the MS can be raised without having to adopt the complex resource allocation scheme to avoid the interference of the neighbor BSs.

摘要翻译： 提供了一种用于在时分双工（TDD）系统中从UpLink（UL）信号中去除干扰的方法和装置。 该方法包括确定用于从MS重叠的用于接收上行链路（UL）信号的部分是否与用于发送服务中的相邻BS的下行链路（DL）信号的部分重叠，所述相邻BS将DL信号发送到另一个MS，当UL信号 部分与相邻BS的DL部分重叠，从在重叠部分中发送的相邻BS检测DL发送信号信息，以及使用检测到的发送信号信息去除来自UL信号的干扰。 因此，可以提高检测来自MS的信号的准确性，而不必采用复杂的资源分配方案来避免相邻BS的干扰。

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：US08018846B2

公开(公告)日：2011-09-13

申请号：US11638783

申请日：2006-12-14

申请人： Tae-In Hyon ,  Sang-Boh Yun ,  Hoon Kim

发明人： Tae-In Hyon ,  Sang-Boh Yun ,  Hoon Kim

IPC分类号： H04L12/26 ,  H04J3/16 ,  H04B7/00

CPC分类号： H04L47/12 ,  H04L1/1607 ,  H04L1/1867 ,  H04L47/10 ,  H04L47/14 ,  H04L47/193 ,  H04L47/2466 ,  H04W28/10 ,  H04W80/06

摘要： A transport control method in a transmitter of a wireless communication system, which includes a transport layer having a congestion control function of transmitting data in a segment basis and retransmitting a segment if an RTO timer expires before receipt of an ACK segment is received in response to transmission of the segment and a MAC layer for detecting receipt of an ACK segment through a wireless link and transporting the detected ACK segment to the transport layer, includes temporarily storing received ACK segments in the MAC layer; detecting an average transmission rate of data segments; and transporting the stored ACK segments to the transport layer at the average transmission rate. Accordingly, by controlling an upward transport rate of a received ACK message by referring to an RTO value of a TCP in a MAC layer, unnecessary retransmission can be prevented by a congestion control function.

摘要翻译： 一种无线通信系统的发送器中的传输控制方法，其包括具有如下传输层的传输层，所述传输层具有在接收到ACK片段之前如果在RTO定时器到期之前以段为基础传输数据并重传片段，则响应于 该段的传输和用于检测通过无线链路接收ACK段的MAC层，并将检测到的ACK段传送到传输层，包括临时存储接收的ACK段在MAC层中; 检测数据段的平均传输速率; 并以平均传输速率将存储的ACK片段传送到传输层。 因此，通过参照MAC层中的TCP的RTO值来控制接收到的ACK消息的向上传输速率，可以通过拥塞控制功能来防止不必要的重传。

公开(公告)号：US07995677B2

公开(公告)日：2011-08-09

申请号：US12157627

申请日：2008-06-12

申请人： Jong-Ho Lee ,  Sang-Boh Yun ,  Young-Hoon Kwon ,  Sung-Soo Hwang ,  Sung-Yoon Jung ,  Soong-Yoon Choi ,  Hyun-Cheol Park ,  Hyoun-Kuk Kim

发明人： Jong-Ho Lee ,  Sang-Boh Yun ,  Young-Hoon Kwon ,  Sung-Soo Hwang ,  Sung-Yoon Jung ,  Soong-Yoon Choi ,  Hyun-Cheol Park ,  Hyoun-Kuk Kim

IPC分类号： H03K9/00

CPC分类号： H04L25/03012 ,  H04L1/0631 ,  H04L1/0668 ,  H04L25/0204 ,  H04L25/0242 ,  H04L25/0246 ,  H04L25/067

摘要： An apparatus and method for detecting a signal in a receiver by maximum likelihood (ML) are provided, in which symbols are detected according to the number of transmit antennas of a transmitter and a modulation scheme, channels are estimated, an equivalent channel matrix corresponding to the estimated channels is determined, a permuted equivalent channel matrix is determined by multiplying the equivalent channel matrix by a predetermined permutation matrix, the permuted equivalent channel matrix is QR decomposed, a hard decision is performed on predetermined symbols among the detected symbols using a received signal resulting from the QR decomposition, and the log likelihood ratios (LLRs) of the hard-decided symbols are determined.

摘要翻译： 提供一种用于通过最大似然（ML）检测接收机中的信号的装置和方法，其中根据发射机的发射天线的数量和调制方案检测符号，估计信道，对应于 确定估计的信道，通过将等效信道矩阵乘以预定的置换矩阵来确定置换的等效信道矩阵，将经排列的等效信道矩阵QR分解，使用接收信号对检测符号中的预定符号执行硬判决 由QR分解产生，并确定硬判决符号的对数似然比（LLR）。

公开(公告)号：US07944879B2

公开(公告)日：2011-05-17

申请号：US11865890

申请日：2007-10-02

申请人： Jin-Ghoo Choi ,  Sang-Boh Yun ,  Oh-Soon Shin

发明人： Jin-Ghoo Choi ,  Sang-Boh Yun ,  Oh-Soon Shin

IPC分类号： H04W4/00 ,  H04W72/00

CPC分类号： H04W72/082 ,  H04B7/155 ,  H04B7/2606 ,  H04W16/10 ,  H04W16/26 ,  H04W84/047

摘要： An apparatus and a method for mitigating interference of a neighbor cell in a multihop relay wireless communication system are provided. The method includes constituting a subframe for a link affected by interference of a neighbor cell over a first frequency band of the frame, and constituting a subframe for a link causing interference to a neighbor cell over a second frequency band of the frame. Therefore, the interference between the neighbor cells can be reduced and the amount of the resources allocated to the links can be freely adjusted.

摘要翻译： 提供了用于减轻多跳中继无线通信系统中的相邻小区的干扰的装置和方法。 所述方法包括：构成用于在所述帧的第一频带上受相邻小区的干扰影响的链路的子帧，并且构成用于在所述帧的第二频带上对相邻小区产生干扰的链路的子帧。 因此，可以减少相邻小区之间的干扰，并且可以自由地调整分配给链路的资源量。

公开(公告)号：US07817592B2

公开(公告)日：2010-10-19

申请号：US11030397

申请日：2005-01-06

申请人： Sang-Boh Yun ,  Sung-Hyun Cho ,  Yung-Soo Kim ,  Eung-Sun Kim ,  Yeon-Woo Lee ,  Stephen McLaughlin

发明人： Sang-Boh Yun ,  Sung-Hyun Cho ,  Yung-Soo Kim ,  Eung-Sun Kim ,  Yeon-Woo Lee ,  Stephen McLaughlin

IPC分类号： H04W4/00

CPC分类号： H04W16/32 ,  H04W16/28

摘要： A cellular communication system and method supporting both a time division duplexing (TDD) scheme and a frequency division duplexing (FDD) scheme. The apparatus includes a plurality of mobile stations, at least three first fixed stations communicate with the mobile station based on the FDD scheme, the first fixed station defining respective macro cells that are contiguous and form a virtual cell, and a cluster including at least one second fixed station communicating with the mobile stations based on the TDD scheme, the second fixed station defining a micro cell in the virtual cell.

摘要翻译： 一种支持时分双工（TDD）方案和频分双工（FDD）方案的蜂窝通信系统和方法。 所述装置包括多个移动站，至少三个第一固定站基于所述FDD方案与所述移动站进行通信，所述第一固定站定义相邻的宏小区，并且形成虚拟小区，以及包括至少一个 第二固定站基于TDD方案与移动站通信，第二固定站在虚拟小区中定义微小区。

公开(公告)号：US07804792B2

公开(公告)日：2010-09-28

申请号：US12080616

申请日：2008-04-04

申请人： Jin-Ghoo Choi ,  Sung-Soo Hwang ,  Sang-Boh Yun ,  Kyung-Ho Sohn ,  Young-Yong Kim ,  Chung-Ha Koh

发明人： Jin-Ghoo Choi ,  Sung-Soo Hwang ,  Sang-Boh Yun ,  Kyung-Ho Sohn ,  Young-Yong Kim ,  Chung-Ha Koh

IPC分类号： H04B7/005 ,  H04J3/16 ,  H04J3/24

CPC分类号： H04W28/12 ,  H04L1/0026 ,  H04L1/0027 ,  H04W72/005

摘要： A method for receiving multicast service data by a terminal in a communication system. The method includes receiving a pilot from a base station, measuring channel state information using the received pilot, and transmitting the channel state information to the base station; receiving a frame from the base station, and determining whether there is an error in the received frame; when no error has occurred in the received frame, determining whether the number of frames consecutively received without error is greater than or equal to a predetermined number; and when the number of frames consecutively received without error is greater than or equal to the predetermined number, transitioning to a non-feedback state where the terminal transmits no channel state information to the base station. The frame includes multicast service data.

摘要翻译： 一种在通信系统中由终端接收组播业务数据的方法。 该方法包括从基站接收导频，使用接收到的导频测量信道状态信息，并向基站发送信道状态信息; 从所述基站接收帧，并确定所接收帧中是否存在错误; 当在接收帧中没有发生错误时，确定连续接收到的没有错误的帧数是否大于或等于预定数; 并且当连续接收到的没有错误的帧的数量大于或等于预定数量时，转换到终端向基站发送没有信道状态信息的非反馈状态。 该帧包括多播服务数据。

公开(公告)号：US07693100B2

公开(公告)日：2010-04-06

申请号：US11407748

申请日：2006-04-20

申请人： Sung-Hyun Cho ,  Sang-Boh Yun ,  Taiwen Tang ,  Robert W. Heath

发明人： Sung-Hyun Cho ,  Sang-Boh Yun ,  Taiwen Tang ,  Robert W. Heath

IPC分类号： H04W4/00 ,  H04J3/00 ,  H04J3/16

CPC分类号： H04B7/0452 ,  H04B7/0645 ,  H04W24/10 ,  H04W72/1268

摘要： In an adaptive feedback method for a cellular communication system having plural terminals feeding back channel information to an access point, the system selects one of an opportunistic mode and a polling mode as a feedback mode between an access point and the terminals on the basis of system and traffic parameters, sets up the access point and the terminals for the selected feedback mode, and feeds back the channel information from the terminals to the access point in the selected feedback mode. The adaptive feedback method changes the feedback mechanism adaptively to the system and traffic environment, making it possible to increase the system throughput as well as to decrease the MAC overhead regardless of the variation of the number of MSs.

摘要翻译： 在具有多个终端将信道信息反馈到接入点的蜂窝通信系统的自适应反馈方法中，系统基于系统选择机会模式和轮询模式之一作为接入点与终端之间的反馈模式 和业务参数，设置所选择的反馈模式的接入点和终端，并且在所选择的反馈模式中将信道信息从终端反馈到接入点。 自适应反馈方法将反馈机制自适应地改变为系统和业务环境，使得可以增加系统吞吐量以及降低MAC开销，而不管MS数量的变化如何。

公开(公告)号：US07590423B2

公开(公告)日：2009-09-15

申请号：US10935212

申请日：2004-09-07

申请人： Won-Hyoung Park ,  Sang-Boh Yun ,  Sung-Hyun Cho

发明人： Won-Hyoung Park ,  Sang-Boh Yun ,  Sung-Hyun Cho

IPC分类号： H04W72/00

CPC分类号： H04W72/06 ,  H04W28/22 ,  H04W72/085

摘要： A channel allocation method in a BS that communicates on at least two channels in a wireless communication system is provided. The BS receives information related to the data rates of the available channels from the MSs within its cell area, calculates the variance of the data rates for each channel, arranges the channels according to the variances, and allocates the channels in the arranged order to the MSs to satisfy the required data rates of the traffic for the MSs.

摘要翻译： 提供了在无线通信系统中在至少两个信道上进行通信的BS中的信道分配方法。 BS从其小区中的MS接收与可用信道的数据速率有关的信息，计算每个信道的数据速率的方差，根据方差布置信道，并按照排列顺序分配给 MS以满足MS的流量所需的数据速率。