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1. 发明申请

US20070218937A1 Outer loop power control for wireless communication systems 有权
标题翻译：无线通信系统的外环功率控制
公开(公告)号：US20070218937A1
公开(公告)日：2007-09-20
申请号：US11803125
申请日：2007-05-11
申请人： Chang-Soo Koo , Sudheer Grandhi , Stephen Terry
发明人： Chang-Soo Koo , Sudheer Grandhi , Stephen Terry
IPC分类号： H04Q7/20
CPC分类号： H04W52/12 , H04W52/10 , H04W52/143 , H04W52/241 , H04W52/36 , H04W52/362 , H04W52/50
摘要： A method system and components for outer loop power control particularly useful for non-real time/real time data services uses data transmitted in many bursts of short duration, called Temp-DCH allocations. A target metric, preferably, target SIR, is adjusted with differing step up and step down levels to converge on a relatively low steady state level of step up and step down target metric adjustments. The initial target SIR and the transient step size for target SIR adjustment is determined in a dynamic way in the outer loop power control for each Temp-DCH allocation of non-real time data.
摘要翻译：用于外部环路功率控制的方法系统和组件，对于非实时/实时数据业务特别有用，使用在短时间内被称为Temp-DCH分配的许多脉冲串中发送的数据。目标度量，优选地，目标SIR被调整，具有不同的升压和降压电平，以在相对较低的稳态水平的升压和降压目标度量调节下收敛。在非实时数据的每个Temp-DCH分配的外环功率控制中以动态方式确定目标SIR调整的初始目标SIR和瞬态步长。

2. 发明授权

US09160492B2 Method and apparatus for combining space-frequency block coding spatial multiplexing and beamforming in a MIMO-OFDM system 有权
标题翻译：用于在MIMO-OFDM系统中组合空间频率块编码空间复用和波束成形的方法和装置
公开(公告)号：US09160492B2
公开(公告)日：2015-10-13
申请号：US13369768
申请日：2012-02-09
申请人： Jaeyoung Kwak , Chang-Soo Koo , Robert Lind Olesen , Aykut Bultan , Fatih Ozluturk
发明人： Jaeyoung Kwak , Chang-Soo Koo , Robert Lind Olesen , Aykut Bultan , Fatih Ozluturk
IPC分类号： H04K1/10 , H04L27/28 , H04L1/06 , H04B7/04 , H04B7/06 , H04L1/04 , H04L27/26 , H04L1/00 , H04L25/02
CPC分类号： H04L1/0606 , H04B7/0408 , H04B7/0413 , H04B7/0697 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/04 , H04L5/0007 , H04L25/0248 , H04L27/2601 , H04L27/2626 , H04L27/2647
摘要： A method and apparatus for combining space-frequency block coding (SFBC) and frequency shift transmit diversity (FSTD) in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system.
摘要翻译：一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中组合空间频率块编码（SFBC）和频移发射分集（FSTD）的方法和装置。

3. 发明授权

US09031146B2 Power control for devices having multiple antennas 有权
标题翻译：具有多个天线的设备的功率控制
公开(公告)号：US09031146B2
公开(公告)日：2015-05-12
申请号：US12894819
申请日：2010-09-30
申请人： Sung-Hyuk Shin , Janet A. Stern-Berkowitz , Chang-Soo Koo , Mihaela C. Beluri
发明人： Sung-Hyuk Shin , Janet A. Stern-Berkowitz , Chang-Soo Koo , Mihaela C. Beluri
IPC分类号： H04B7/02 , H04W52/32 , H04B7/06 , H04B7/08 , H04W52/42
CPC分类号： H04W52/325 , H04B7/0413 , H04B7/0689 , H04B7/0871 , H04W52/146 , H04W52/42 , H04W72/0413
摘要： Power control for devices having multiple transmit antennas are disclosed, including power control methods for Physical Uplink Control Channel (PUCCH) and Sounding Reference Signal (SRS) transmissions for a wireless transmit/receive unit (WTRU). The PUCCH and SRS power control methods include selecting a multiple input multiple output (MIMO) mode and changing the power of the PUCCH or SRS transmission based on the selected MIMO mode. Another power control method estimates an antenna gain imbalance (AGI) for a WTRU having at least two transmit antennas. The AGI is based on measuring a Reference Signal Received Power (RSRP) on each transmit antenna. Each transmit antenna is then scaled by an AGI scaling factor based on the estimated AGI.
摘要翻译：公开了具有多个发射天线的装置的功率控制，包括用于无线发射/接收单元（WTRU）的物理上行链路控制信道（PUCCH）和探测参考信号（SRS）传输的功率控制方法。 PUCCH和SRS功率控制方法包括：选择多输入多输出（MIMO）模式，并且基于所选择的MIMO模式改变PUCCH或SRS传输的功率。另一种功率控制方法估计具有至少两个发射天线的WTRU的天线增益不平衡（AGI）。 AGI基于在每个发射天线上测量参考信号接收功率（RSRP）。然后基于估计的AGI，通过AGI缩放因子来缩放每个发射天线。

4. 发明申请

US20120140845A1 METHOD AND APPARATUS FOR COMBINING SPACE-FREQUENCY BLOCK CODING SPATIAL MULTIPLEXING AND BEAMFORMING IN A MIMO-OFDM SYSTEM 审中-公开
标题翻译：在MIMO-OFDM系统中组合空间块编码空间多路复用和波束成形的方法与装置
公开(公告)号：US20120140845A1
公开(公告)日：2012-06-07
申请号：US13369768
申请日：2012-02-09
申请人： Jaeyoung Kwak , Chang-Soo Koo , Robert Lind Olesen , Aykut Bultan , Fatih Ozluturk
发明人： Jaeyoung Kwak , Chang-Soo Koo , Robert Lind Olesen , Aykut Bultan , Fatih Ozluturk
IPC分类号： H04L27/04
CPC分类号： H04L1/0606 , H04B7/0408 , H04B7/0413 , H04B7/0697 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/04 , H04L5/0007 , H04L25/0248 , H04L27/2601 , H04L27/2626 , H04L27/2647
摘要： A method and apparatus for combining space-frequency block coding (SFBC) and frequency shift transmit diversity (FSTD) in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system.
摘要翻译：一种用于在多输入多输出（MIMO）正交频分复用（OFDM）系统中组合空间频率块编码（SFBC）和频移发射分集（FSTD）的方法和装置。

5. 发明授权

US08116351B2 Downlink power control with limit to dynamic range using detection of downlink transmit power 失效
标题翻译：下行链路功率控制，使用下行链路发射功率的检测限制到动态范围
公开(公告)号：US08116351B2
公开(公告)日：2012-02-14
申请号：US12615761
申请日：2009-11-10
申请人： Chang-Soo Koo , Angelo Cuffaro , Sung-Hyuk Shin
发明人： Chang-Soo Koo , Angelo Cuffaro , Sung-Hyuk Shin
IPC分类号： H04L27/30
CPC分类号： H04W52/362 , H04W52/12 , H04W52/143 , H04W52/34 , H04W52/367
摘要： An apparatus and method is provided for dynamic range power control of a wireless downlink communication signal, such that target signal quality adjustments are held temporarily when it is apparent that transmit power control commands will not produce the desired response at the transmitting station. Comparisons of measured received signals to thresholds are performed to determine whether the transmitting station has either reached the maximum or minimum transmit power, in which case the target signal quality adjustment is controlled accordingly. When normal transmit power is detected, the target signal quality adjustments are allowed to resume as usual.
摘要翻译：提供了一种用于无线下行链路通信信号的动态范围功率控制的装置和方法，使得当显然发射功率控制命令在发射台处不产生期望的响应时，暂时保持目标信号质量调整。执行测量的接收信号与阈值的比较，以确定发射站是否达到最大或最小发射功率，在这种情况下相应地控制目标信号质量调整。当检测到正常的发射功率时，允许目标信号质量调整恢复正常。

6. 发明申请

US20110122958A1 POWER LOADING TRANSMIT BEAMFORMING IN MIMO-OFDM WIRELESS COMMUNICATION SYSTEMS 失效
标题翻译： MIMO-OFDM无线通信系统中的功率负载发射波束
公开(公告)号：US20110122958A1
公开(公告)日：2011-05-26
申请号：US13018062
申请日：2011-01-31
申请人： Chang-Soo Koo , Nirav Shah , Robert Lind Olesen
发明人： Chang-Soo Koo , Nirav Shah , Robert Lind Olesen
IPC分类号： H04W52/00
CPC分类号： H04L25/0248 , H04B7/043 , H04B7/0434 , H04B7/0443 , H04L27/2601 , H04L27/2602 , H04W28/18 , H04W52/346 , H04W52/42
摘要： A method is disclosed for tuning a beamformed signal in wireless communications including a plurality of sub-carriers and a plurality of eigenbeams. The method includes adjusting a total gain of each of the plurality of sub-carriers and eigenbeams, and applying the adjusted total gain to each of the sub-carriers and each of the eigenbeams.
摘要翻译：公开了一种用于在包括多个子载波和多个本征波束的无线通信中调谐波束形成信号的方法。该方法包括调整多个子载波和特征波束中的每一个的总增益，以及将调整的总增益应用于每个子载波和每个本征波束。

7. 发明授权

US07944985B2 MIMO transmitter and receiver for supporting downlink communication of single channel codewords 有权
标题翻译：用于支持单信道码字的下行链路通信的MIMO发射机和接收机
公开(公告)号：US07944985B2
公开(公告)日：2011-05-17
申请号：US11842252
申请日：2007-08-21
申请人： Hesham ElGamal , Aykut Bultan , Chang-Soo Koo
发明人： Hesham ElGamal , Aykut Bultan , Chang-Soo Koo
IPC分类号： H04B7/02
CPC分类号： H04L1/0003 , H04L1/0606 , H04L1/0618 , H04L1/0625 , H04L1/0643 , H04L1/0656 , H04L1/0687 , H04L1/0693 , H04L1/1819
摘要： The downlink (DL) communication of single channel codewords is supported by providing a multiple-input multiple-output (MIMO) transmitter and receiver. The transmitter includes NT transmit antennas for transmitting spatial streams to a receiver having NR receive antennas, a precoder and a space-time or space-frequency matrix construction unit in communication with the precoder and the transmit antennas. The space-time or space-frequency matrix construction unit constructs a matrix that defines a threaded algebraic space-time (TAST) codeword based on a number of virtual antennas, NV, and the number of transmit antennas, NT. The transmitter operates in an open loop mode when no feedback information from the receiver is available, a semi-open loop mode when channel rank information is available, and a closed loop mode when channel state information (CSI) is available. The receiver is configured to provide feedback to the transmitter on a per received spatial stream basis
摘要翻译：通过提供多输入多输出（MIMO）发射机和接收机来支持单信道码字的下行链路（DL）通信。发射机包括用于向具有NR个接收天线的接收机发送空间流的NT个发射天线，与预编码器和发射天线通信的预编码器和时空或空时矩阵构造单元。空时或空频矩阵构造单元构建基于多个虚拟天线NV和发射天线数目NT定义线性代数时空（TAST）码字的矩阵。当没有来自接收机的反馈信息可用时，发射机以开环模式工作，当信道秩信息可用时为半开环模式，当信道状态信息（CSI）可用时为闭环模式）。接收器被配置为在每个接收到的空间流的基础上向发射机提供反馈

8. 发明授权

US07274947B2 Bias error compensated initial transmission power control for data services 有权
标题翻译：用于数据业务的偏置误差补偿初始传输功率控制
公开(公告)号：US07274947B2
公开(公告)日：2007-09-25
申请号：US10721482
申请日：2003-11-25
申请人： Chang-Soo Koo , Sudheer A. Grandhi , James M. Miller , Sung-Hyuk Shin
发明人： Chang-Soo Koo , Sudheer A. Grandhi , James M. Miller , Sung-Hyuk Shin
IPC分类号： H04B1/00 , H04B7/00
CPC分类号： H04W52/221 , H04W52/08 , H04W52/20 , H04W52/223 , H04W52/225 , H04W52/24
摘要： A method, components and a system are provided for implementing power control for wireless communication transmissions that provides, inter alia, a remedy for the mismatch of initial transmission power for NRT data by estimating a bias error based and adjusting the transmission power by a compensation amount for an averaged bias error estimation over all data set transmissions, such as sequential Temp-DCH allocations in a UMTS system. An alternative approach for a UMTS system estimates the bias error at a RNC based on an averaged transmit code power measurement by a base station and applies a bias error compensation to the initial DL transmit power at the RNC.
摘要翻译：提供了一种用于实现无线通信传输的功率控制的方法，组件和系统，其特别地，其通过估计基于偏差误差的方式提供用于NRT数据的初始发射功率的不匹配的补救，并且通过补偿量来调整发射功率用于在所有数据集传输中的平均偏差误差估计，例如UMTS系统中的顺序Temp-DCH分配。用于UMTS系统的替代方法基于基站的平均发射码功率测量来估计RNC处的偏置误差，并且对RNC处的初始DL发射功率施加偏置误差补偿。

9. 发明授权

US07197327B2 Adjustment of target signal-to-interference in outer loop power control for wireless communication systems 失效
标题翻译：调整无线通信系统外环功率控制中的目标信号干扰
公开(公告)号：US07197327B2
公开(公告)日：2007-03-27
申请号：US11023858
申请日：2004-12-28
申请人： Chang-Soo Koo , Charles Dennean
发明人： Chang-Soo Koo , Charles Dennean
IPC分类号： H04B7/00
CPC分类号： H04W52/362
摘要： A method system and components for outer loop power control which compensates for changing channel conditions. A target metric, preferably target signal-to-interference ratio (SIR), is adjusted with differing step up and step down levels to converge on a relatively low steady state level of step up and step down target metric adjustments. The initial target SIR remains fixed during an inner loop settling state, followed by incremental target SIR adjustments during a transient state, and smaller incremental target SIR adjustments in a steady state. Step sizes of the adjustments are preferably based on the target block error rate (BLER) and the number of errors detected within predetermined time intervals.
摘要翻译：用于外环功率控制的方法，系统和组件，其补偿改变的信道条件。目标度量，优选目标信号干扰比（SIR），通过不同的升压和降压电平进行调整，以收敛于相对较低的升压和降压目标度量调节的稳态水平。初始目标SIR在内部环路稳定状态期间保持固定，随后是在瞬态状态期间的增量目标SIR调整，以及稳定状态下较小的增量目标SIR调整。调整的步长优选地基于目标块错误率（BLER）和在预定时间间隔内检测到的错误的数量。

10. 发明申请

US20070014376A1 Method and system for optimization of channel estimation and synchronization in an OFDM-MIMO wireless communication system 失效
标题翻译： OFDM-MIMO无线通信系统中信道估计和同步优化的方法和系统
公开(公告)号：US20070014376A1
公开(公告)日：2007-01-18
申请号：US11524225
申请日：2006-09-20
申请人： Yuejin Huang , Robert Olesen , Chang-Soo Koo
发明人： Yuejin Huang , Robert Olesen , Chang-Soo Koo
IPC分类号： H04L27/28
CPC分类号： H04L27/262 , H04B7/02 , H04B7/0684 , H04L25/0212 , H04L25/0224 , H04L25/0226 , H04L27/261 , H04L27/2614
摘要： The present invention is related to a method and system for optimization of channel estimation and synchronization in an Orthogonal Frequency Division Multiplexing (OFDM) Multiple-Input Multiple-Output (MIMO) wireless communication system. In accordance with the present invention, all of the training sequences are simply constructed based on a basic code by cyclically shifting the basic code. The training sequences are transmitted from different antennas in parallel without performing inverse fast Fourier transform. As a result, there is no peak-to-average ratio problem. Channel estimation is performed in each receiver based on the samples before fast Fourier transform and the maximum-likelihood estimate of channel response in time domain is then mapped into the frequency domain. The channel estimation is not only very simple in implementation, but also very efficient in computation.
摘要翻译：本发明涉及一种用于在正交频分复用（OFDM）多输入多输出（MIMO）无线通信系统中优化信道估计和同步的方法和系统。根据本发明，通过循环移位基本代码，基于基本代码简单地构建所有的训练序列。训练序列并行地从不同的天线发射，而不进行快速傅立叶逆变换。因此，没有峰均比例问题。基于快速傅立叶变换之前的样本在每个接收机中执行信道估计，然后将时域中的信道响应的最大似然估计值映射到频域。信道估计不仅在实现上非常简单，而且在计算上也非常有效。

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