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1.发明公开
公开(公告)号：KR1020110020352A
公开(公告)日：2011-03-03
申请号：KR1020090077929
申请日：2009-08-24
Applicant: 서울대학교산학협력단
CPC classification number: H04B7/026 , H04B7/0617 , H04L25/0224 , H04W52/04 , H04W84/18 , Y02D70/00
Abstract: PURPOSE: An apparatus and a method of cooperative interference mitigation and resource management in a wireless dual-hop relay system with multiple antennas are provided to control relay interference by using the transmission channel correlation information of a user in order to increase the capacitance of an MIMO relay system. CONSTITUTION: A reception unit receives average channel information of a relay from a multi-reception antenna of a user. A determination unit uses a maximum eigenvector to select an orthogonal user. A generation unit generates a beam weight value of a base station and a relay depending on the selection of the orthogonal user. A calculation unit calculates the estimated capacitance of a relay system by using an S/N(Signal to Noise) ratio. A transmission unit transmits the transmission power allocation information to the relay.
Abstract translation: 目的：提供一种具有多个天线的无线双跳中继系统中协同干扰减轻和资源管理的方法和装置，通过使用用户的传输信道相关信息来控制中继干扰，以增加MIMO的电容 中继系统。 构成：接收部从用户的多接收天线接收中继的平均信道信息。 确定单元使用最大特征向量来选择正交用户。 生成单元根据正交用户的选择生成基站和中继的波束权重值。 计算单元通过使用S / N（信噪比）来计算中继系统的估计电容。 发送单元向中继发送发送功率分配信息。
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公开(公告)号：KR101092831B1
公开(公告)日：2011-12-12
申请号：KR1020090134964
申请日：2009-12-30
Applicant: 서울대학교산학협력단
IPC: H04B7/04
Abstract: 본발명은다중안테나(multiple antenna)를사용하는무선시스템에서다중사용자의전송채널상관(transmit correlation) 정보를이용하여서비스할사용자수와사용자를결정하고, 이에맞는다중고유빔(multiple eigen-beam)을형성하여신호를전송함으로써, 시스템의용량(system capacity)을증가시키는다중안테나송수신기법에관한것이다.
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公开(公告)号：KR1020110078213A
公开(公告)日：2011-07-07
申请号：KR1020090134964
申请日：2009-12-30
Applicant: 서울대학교산학협력단
IPC: H04B7/04
CPC classification number: H04B7/0617 , H04B7/043 , H04B7/063
Abstract: PURPOSE: A multiple intrinsic beam-forming transmission/reception method in a multiple antenna system and apparatus thereof are provided to transmit a signal by forming multiple intrinsic beams at the same time to a direction of a main characteristic vector that is belong to a transmission channel correlation matrix of multiple users. CONSTITUTION: A transmission unit transmits transmission channel correlation information to a base station. A system capacity calculator(311) of the base station calculates a system capacity by using channel correlation information that received from the multiple users. A scheduling association user of the base station and usage decider(313) decides the user for a maximum system capacity by using the system capacity calculator. A transmission unit of the base station transmits the multiple intrinsic-beams by forming according to a user decision result.
Abstract translation: 目的：提供一种多天线系统中的多重固有波束形成发送/接收方法及其装置，用于通过同时形成多个固有波束来发送信号到属于传输信道的主要特征向量的方向 多个用户的相关矩阵。 构成：发送单元向基站发送发送信道相关信息。 基站的系统容量计算器（311）通过使用从多个用户接收的信道相关信息来计算系统容量。 基站的调度关联用户和使用决定器（313）通过使用系统容量计算器来决定用户的最大系统容量。 基站的发送单元通过根据用户决定结果的形成来发送多个固有波束。
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Patent Agency Ranking
公开(公告)号：KR101192041B1
公开(公告)日：2012-10-17
申请号：KR1020100031575
申请日：2010-04-06
Applicant: 서울대학교산학협력단
IPC: H04B7/06
CPC classification number: H04B7/0417 , H04B7/0434 , H04B7/0452 , H04B7/0478 , H04B7/0617 , H04B7/0639 , H04B7/0641 , H04B7/0647 , H04W24/10
Abstract: A method of signal transmission based on differentially quantized channel information in a multi-antenna wireless communication system which can transmit signal to multiple mobile stations simultaneously through multiple transmit antennas includes a main codebook reporting step of each mobile station for quantizing channel correlation information (CCI) using a main-codebook and reporting an index of the main codebook, which corresponds to the quantized CCI, to a base station. A sub-codebook reporting step of each mobile station for quantizing the change of the CCI between the quantization interval using a sub-codebook and reporting an index of the sub-codebook, which corresponds to the quantized CCI change, to a base station. A multi-user eigen-beam transmission step of the base station for generating multiple eigen-beams using the index of the main-codebook or sub-codebook reported from mobile stations and transmitting them to multiple users simultaneously.
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公开(公告)号：KR1020120049732A
公开(公告)日：2012-05-17
申请号：KR1020100111140
申请日：2010-11-09
Applicant: 서울대학교산학협력단
IPC: H04B7/04
CPC classification number: H04B7/024 , H04B7/0617 , H04B7/0658
Abstract: PURPOSE: A cooperation transmission method and an apparatus thereof are provided to perform user scheduling of a multiple antenna wireless system in order to obtain a multiple user diversity gain. CONSTITUTION: An apparatus determines a user group having channel correlation characteristics by using quantized channel correlation information(203). The apparatus selects a user according to the channel quality of group users(204). The apparatus transmits a signal by using a transmission beamforming method(205,206).
Abstract translation: 目的：提供一种协作传输方法及其装置，以执行多天线无线系统的用户调度，以获得多用户分集增益。 构成：装置通过使用量化信道相关信息来确定具有信道相关特性的用户组（203）。 该装置根据组用户的信道质量来选择用户（204）。 该装置通过使用发送波束成形方法（205,206）发送信号。
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6.发明授权
公开(公告)号：KR101115785B1
公开(公告)日：2012-02-20
申请号：KR1020090077929
申请日：2009-08-24
Applicant: 서울대학교산학협력단
Abstract: 본 발명은 다중 안테나(multiple-input multiple-output: 이하 MIMO)를 사용하는 무선 이중-홉 릴레이 통신 시스템(wireless dual-hop relay systems: 이하 MIMO 릴레이)의 하향링크(downlink)에서 다중 안테나의 송신 채널 상관(transmit channel correlation) 정보만을 이용하여 릴레이로 인해 발생하는 기지국 셀 내에 있는 사용자에게 간섭 영향을 줄이기 위한 기지국과 릴레이 간 협력 송신 빔형성(cooperative transmit beamforming) 기법과 그와 연동된 송신 전력 할당(transmit power allocation) 기법 및 장치에 관한 것이다. 실제적으로 셀룰러 시스템의 하향링크는 릴레이 간섭에 의해 성능이 크게 제한되며, 이러한 간섭 특성은 릴레이 간섭 채널의 채널 특성 뿐 만 아니라 릴레이의 송신 빔형성 방식, 기지국과 릴레이에 할당된 송신 전력에 따라 달라지게 된다. 본 발명에서는 다중 사용자의 송신 채널 상관 정보가 물리적으로 서로 독립적인 특성을 갖는다는 사실을 이용하여 기지국과 릴레이 간 송신 채널 상관 정보를 공유함으로써 릴레이 채널과 간섭 채널의 상관도 특성이 서로 직교적인(orthogonal) 사용자 조합을 선택하고 선택된 사용자의 송신 채널 상관도의 최대 고유치(eigenvalue)에 해당하는 고유 벡터(eigenvector)를 송신 빔의 가중치로 사용하여 릴레이 간섭을 회피하는 협력방식의 고유 빔형성 기법과 장치를 제안한다. 또한 제안된 빔형성 기법을 간섭 특성에 따라 기지국과 릴레이의 송신 전력을 적응적으로 할당하는 기법과 연동하여 성능을 최적화한다.
협력통신(cooperative transmission), 빔포밍(beamforming), 릴레이 간섭(relay interference), 분산 자원 관리(distributed resource management), 공간 상관도(spatial correlation)Abstract translation: 目的：提供一种具有多个天线的无线双跳中继系统中协同干扰减轻和资源管理的方法和装置，通过使用用户的传输信道相关信息来控制中继干扰，以增加MIMO的电容 中继系统。 构成：接收部从用户的多接收天线接收中继的平均信道信息。 确定单元使用最大特征向量来选择正交用户。 生成单元根据正交用户的选择生成基站和中继的波束权重值。 计算单元通过使用S / N（信噪比）来计算中继系统的估计电容。 发送单元向中继发送发送功率分配信息。
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公开(公告)号：KR1020110112136A
公开(公告)日：2011-10-12
申请号：KR1020100031575
申请日：2010-04-06
Applicant: 서울대학교산학협력단
IPC: H04B7/06
CPC classification number: H04B7/0417 , H04B7/0434 , H04B7/0452 , H04B7/0478 , H04B7/0617 , H04B7/0639 , H04B7/0641 , H04B7/0647 , H04W24/10
Abstract: A method of signal transmission based on differentially quantized channel information in a multi-antenna wireless communication system which can transmit signal to multiple mobile stations simultaneously through multiple transmit antennas includes a main codebook reporting step of each mobile station for quantizing channel correlation information (CCI) using a main-codebook and reporting an index of the main codebook, which corresponds to the quantized CCI, to a base station. A sub-codebook reporting step of each mobile station for quantizing the change of the CCI between the quantization interval using a sub-codebook and reporting an index of the sub-codebook, which corresponds to the quantized CCI change, to a base station. A multi-user eigen-beam transmission step of the base station for generating multiple eigen-beams using the index of the main-codebook or sub-codebook reported from mobile stations and transmitting them to multiple users simultaneously.
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公开(公告)号：KR101160424B1
公开(公告)日：2012-06-28
申请号：KR1020100111140
申请日：2010-11-09
Applicant: 서울대학교산학협력단
IPC: H04B7/04
Abstract: PURPOSE: A cooperation transmission method and an apparatus thereof are provided to perform user scheduling of a multiple antenna wireless system in order to obtain a multiple user diversity gain. CONSTITUTION: An apparatus determines a user group having channel correlation characteristics by using quantized channel correlation information(203). The apparatus selects a user according to the channel quality of group users(204). The apparatus transmits a signal by using a transmission beamforming method(205,206).
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