公开(公告)号：WO2004049588A1

公开(公告)日：2004-06-10

申请号：PCT/US2003/037527

申请日：2003-11-24

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  GRANDHI, Sudheer, A. ,  MILLER, James, M. ,  SHIN, Sung-Hyuk

IPC: H04B7/00

CPC classification number: H04W52/221 ,  H04W52/08 ,  H04W52/20 ,  H04W52/223 ,  H04W52/225 ,  H04W52/24

Abstract: 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 (312) for NRT data by estimating a bias error (324) based and adjusting the transmission power by a compensation amount for an averaged bias error estimation (323) 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 (310) and applies a bias error compensation to the initial DL transmit power at the RNC.

Abstract translation: 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，其特别地通过基于偏置误差（324）估计用于NRT数据的初始发射功率（312）的不匹配的补救，并且调整 传输功率通过在所有数据集传输中的平均偏差误差估计（323）的补偿量，诸如在UMTS系统中的顺序Temp-DCH分配。 UMTS系统的替代方法基于基站（310）的平均发射码功率测量来估计RNC处的偏置误差，并且在RNC处对初始DL发射功率施加偏置误差补偿。

公开(公告)号：WO2003032502A2

公开(公告)日：2003-04-17

申请号：PCT/US2002/031742

申请日：2002-10-04

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： SHIN, Sung-Hyuk ,  OZLUTURK, Fatih ,  ZEIRA, Ariela ,  KOO, Chang-Soo

IPC: H04B

CPC classification number: H04W52/228 ,  H04W52/08 ,  H04W52/221 ,  H04W52/226 ,  H04W52/242 ,  H04W52/243 ,  H04W52/248 ,  H04W52/36

Abstract: A transmitting station receives a transmit power command and a reference signal. The transmit power command indicates an increase or decrease in transmission power for the transmitting station. A received power level of the reference signal is measured and the measured reference signal received power level is compared to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal. A size of a change in transmit power level is determined using the pathloss estimate. A transmission power level of the transmitting station is adjusted in response to the transmit power command in an amount of the determined change in size. A communication is transmitted at the adjusted transmission power level.

Abstract translation: 发射站接收发射功率命令和参考信号。 发送功率指示表示发送站的发送功率的增加或减少。 测量参考信号的接收功率电平，并将测量的参考信号接收功率电平与参考信号的发射功率电平进行比较，以产生参考信号的路径损耗估计。 使用路径损耗估计来确定发射功率电平变化的大小。 响应于所确定的大小变化量的发射功率命令来调整发射台的发射功率电平。 以调整的发送功率电平发送通信。

公开(公告)号：WO2003026176A1

公开(公告)日：2003-03-27

申请号：PCT/US2002/011668

申请日：2002-04-15

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  ZEIRA, Ariela ,  GRIECO, Donald ,  SHIN, Sung-Hyuk

IPC: H04J3/00

CPC classification number: H04W52/228 ,  H04W52/08 ,  H04W52/12 ,  H04W52/143 ,  H04W52/146 ,  H04W52/225 ,  H04W52/24

Abstract: The present invention is a system and method which controls outer loop transmit power for transmission power of an uplink/downlink communication in a spread spectrum time division communication. The system receives a communication from a base station (901) and determines an error rate (902) on the received communication. The system then distinguishes between static and dynamic channels, produces a static adjustment value (908), and characterizes the dynamic channels to generate a dynamic adjustment value. The target power level is then adjusted by the static and dynamic adjustment values, setting the transmission power level (912).

Abstract translation: 本发明是一种在扩频时分通信中控制上行链路/下行链路通信的发送功率的外环发送功率的系统和方法。 系统接收来自基站（901）的通信，并确定接收的通信的错误率（902）。 然后，系统区分静态和动态通道，产生静态调整值（908），并表征动态通道以产生动态调整值。 然后通过静态和动态调整值调整目标功率电平，设置发射功率电平（912）。

公开(公告)号：EP1665574B1

公开(公告)日：2008-08-27

申请号：EP04779502.6

申请日：2004-07-29

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  SHIN, Sung-Hyuk

IPC: H04B7/00 ,  H04Q7/20

CPC classification number: H04W52/362 ,  H04W52/12 ,  H04W52/143 ,  H04W52/34 ,  H04W52/367

公开(公告)号：EP1869854A2

公开(公告)日：2007-12-26

申请号：EP06740039.0

申请日：2006-03-30

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  OLESEN, Robert, Lind

IPC: H04L27/04 ,  H04B7/02

CPC classification number: H04B7/0417 ,  G06F17/16 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0663 ,  H04L25/0208 ,  H04L25/0248 ,  H04L27/2647

Abstract: A method and apparatus for decomposing a channel matrix in a wireless communication system are disclosed. A channel matrix H is generated for channels between transmit antennas and receive antennas (202). A Heπnitian matrix A=HHH or A=HHn is created (204). A Jacobi process is cyclically performed on the matrix A to obtain Q and DA matrixes such that A=QDAQH (206). DA is a diagonal matrix obtained by singular value decomposition (SVD) on the A matrix. In each Jacobi transformation, real part diagonalization is performed to annihilate real parts of off-diagonal elements of the matrix and imaginary part diagonalization is performed to annihilate imaginary parts of off -diagonal elements of the matrix after the real part diagonalization. U, V and DH matrixes of H matrix are then calculated from the Q and DA matrices. DH is a diagonal matrix comprising singular values of the H matrix (208).

公开(公告)号：EP1779554A1

公开(公告)日：2007-05-02

申请号：EP05776297.3

申请日：2005-07-21

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  OLESEN, Robert, Lind

IPC: H04B7/216

Abstract: A method and apparatus for optimizing the system capacity of an Orthogonal Frequency Division Multiplexing (OFDM) system that uses with Multiple-Input Multiple-Output (MIMO) antennas. In a receiver, a target quality of service (QoS) metric and reference data rate are set. The target QoS metric may be set to a predetermined value and/or may be adjusted dynamically with respect to packet error rate (PER) by a slow outer-loop control processor. The QoS of received signals are measured and compared to the target QoS. Depending on the comparison, the receiver generates a channel quality indicator (CQI) which is sent back to the transmitting transmitter. The CQI is a one or two bit indicator which indicates to the transmitter to disable, adjust or maintain data transmission rates of particular sub-carriers, groups of sub-carriers per transmit antenna, or groups of sub-carriers across all transmit antennas. At the transmitter, the transmitted data rate is disabled, adjusted or maintained. At the receiver, the target QoS metric and reference data rate are adjusted accordingly. This process is repeated for each data frame of each sub-carrier group.

公开(公告)号：EP1665574A1

公开(公告)日：2006-06-07

申请号：EP04779502.6

申请日：2004-07-29

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  SHIN, Sung-Hyuk

IPC: H04B7/00 ,  H04Q7/20

CPC classification number: H04W52/362 ,  H04W52/12 ,  H04W52/143 ,  H04W52/34 ,  H04W52/367

Abstract: An apparatus and method is provided for dynamic range power control of a wireless downlink communication signal (100), such that target signal quality adjustments are held temporarily (102) 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 (121), the target signal quality adjustments are allowed to resume as usual.

Abstract translation: 提供了一种用于无线下行通信信号（100）的动态范围功率控制的装置和方法，使得当明显地发射功率控制命令不会在所述无线下行通信信号（100）产生期望的响应时临时保持（102）目标信号质量调整 发射台。 测量的接收信号与阈值的比较被执行以确定发射站是否已经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。 当检测到正常发射功率时（121），允许目标信号质量调整如常继续。

公开(公告)号：EP1540967A1

公开(公告)日：2005-06-15

申请号：EP03752212.5

申请日：2003-09-11

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  SHIN, Sung-Hyuk ,  DENNEAN, Charles

IPC: H04Q7/00 ,  H04B7/00

CPC classification number: H04W52/12 ,  H04W52/20 ,  H04W52/241 ,  H04W52/362 ,  H04W52/50

Abstract: A wireless communication system and method for controlling transmission power to maintain a received signal-to-interference ratio (SIR) as close as possible to a target SIR. A received quality is maintained as close as possible to a target quality based on block error rate (BLER). When a target BLER is converted to an initial target SIR, an error may occur due to a channel condition mismatch, since the target SIR required for the target BLER varies with channel conditions. An outer loop power control process is used to set a target SIR for each coded composite transport channel (CCTrCH) based on the required target BLER. The process adjusts a SIR step size parameter to maximize the convergence speed of the process.

公开(公告)号：EP1435145A2

公开(公告)日：2004-07-07

申请号：EP02768976.9

申请日：2002-10-04

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： SHIN, Sung-Hyuk ,  OZLUTURK, Fatih ,  ZEIRA, Ariela ,  KOO, Chang-Soo

IPC: H04B7/185

CPC classification number: H04W52/228 ,  H04W52/08 ,  H04W52/221 ,  H04W52/226 ,  H04W52/242 ,  H04W52/243 ,  H04W52/248 ,  H04W52/36

Abstract: A transmitting station receives a transmit power command and a reference signal. The transmit power command indicates an increase or decrease in transmission power for the transmitting station. A received power level of the reference signal is measured and the measured reference signal received power level is compared to a transmit power level of the reference signal to produce a pathloss estimate of the reference signal. A size of a change in transmit power level is determined using the pathloss estimate. A transmission power level of the transmitting station is adjusted in response to the transmit power command in an amount of the determined change in size. A communication is transmitted at the adjusted transmission power level.

公开(公告)号：EP1779554B1

公开(公告)日：2020-01-01

申请号：EP05776297.3

申请日：2005-07-21

Applicant: InterDigital Technology Corporation

Inventor： KOO, Chang-Soo ,  OLESEN, Robert, Lind

IPC: H04B7/216 ,  H04L5/00 ,  H04L1/00