公开(公告)号：US20110002322A1

公开(公告)日：2011-01-06

申请号：US12865102

申请日：2009-08-12

Applicant: Byoung-Hoon Kim ,  Jung Hoon Lee ,  Jae Hoon Chung ,  Young Seob Choi ,  Seung Hee Han ,  Hyunsoo Ko

Inventor： Byoung-Hoon Kim ,  Jung Hoon Lee ,  Jae Hoon Chung ,  Young Seob Choi ,  Seung Hee Han ,  Hyunsoo Ko

IPC: H04B7/208

CPC classification number: H04L5/0023 ,  H04B2201/70706 ,  H04J11/0023

Abstract: A transmitter includes a plurality of transmit antennas, a processor configured to process user data, and a single carrier frequency division multiple access (SC-FDMA) signal generator configured to receive the user data and generate SC-FDMA symbols transmitted through the plurality of transmit antennas. The SC-FDMA signal generator independently performs inverse fast Fourier transform (IFFT) for each transmit antenna, and each of the plurality of transmit antennas is associated with each of a plurality of carriers.

Abstract translation: 发射机包括多个发射天线，被配置为处理用户数据的处理器和被配置为接收用户数据并生成通过多个发射发射的SC-FDMA符号的单载波频分多址（SC-FDMA）信号发生器 天线。 SC-FDMA信号发生器对于每个发射天线独立地执行快速傅立叶逆变换（IFFT），并且多个发射天线中的每一个与多个载波中的每一个相关联。

公开(公告)号：US07548589B2

公开(公告)日：2009-06-16

申请号：US11449526

申请日：2006-06-07

Applicant: Byoung-Hoon Kim

Inventor： Byoung-Hoon Kim

IPC: H04B7/02 ,  H04L27/28

CPC classification number: H04L25/03159 ,  H04B7/0619 ,  H04L25/0206 ,  H04L25/03038 ,  H04L25/03057 ,  H04L25/03292 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03509 ,  H04L2025/03522

Abstract: Techniques for generating weights that can provide good performance for transmit diversity are described. A receiver obtains symbols for a data transmission sent from multiple transmit antennas to at least one receive antenna. The receiver also derives channel estimates for a communication channel between the transmit antennas and the receive antenna(s). The receiver performs equalization on the symbols with an equalizer, which may be a linear equalizer or a decision feedback equalizer. The receiver derives weights for the transmit antennas based on the channel estimates and the equalizer and using, e.g., an objective function that is applicable for the equalizer and indicative of a signal-to-noise ratio (SNR) achievable by the equalizer. Different equalizers (e.g., the linear equalizer and decision feedback equalizer) may be associated with different objective functions.

Abstract translation: 描述了用于产生可以为发射分集提供良好性能的权重的技术。 接收机获得用于从多个发射天线发送到至少一个接收天线的数据传输的符号。 接收机还导出发射天线和接收天线之间的通信信道的信道估计。 接收机利用均衡器对符号执行均衡，均衡器可以是线性均衡器或判决反馈均衡器。 接收机基于信道估计和均衡器导出发射天线的权重，并且使用例如适用于均衡器并且指示均衡器可实现的信噪比（SNR）的目标函数。 不同的均衡器（例如，线性均衡器和判决反馈均衡器）可以与不同的目标函数相关联。

公开(公告)号：US20090129259A1

公开(公告)日：2009-05-21

申请号：US12190461

申请日：2008-08-12

Applicant: Durga Prasad Malladi ,  Byoung-Hoon Kim ,  Juan Montojo ,  Sandip Sarkar

Inventor： Durga Prasad Malladi ,  Byoung-Hoon Kim ,  Juan Montojo ,  Sandip Sarkar

IPC: H04J11/00 ,  H04J3/00

CPC classification number: H04J11/00 ,  H04B7/0417 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/0057 ,  H04L1/0072 ,  H04L1/1607 ,  H04L1/1671 ,  H04L1/1812 ,  H04L1/1822 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0091

Abstract: Techniques for sending control information in a wireless communication system are described. In an aspect, a UE spreads control information across frequency with a DFT and across time with an orthogonal sequence to obtain output data for the control information. In one design, the UE receives codewords for N HARQ processes in N downlink subframes, determines an ACK value for each HARQ process, codes N ACK values for the N HARQ processes to obtain ACK information, generates output data for the ACK information, and sends the output data in one of M uplink subframes. In another aspect, first control information is processed based on a first coding and multiplexing scheme utilizing code division multiplexing in time and frequency domains. Second control information is processed based on a second coding and multiplexing scheme utilizing code division multiplexing in time domain and spreading in frequency domain.

Abstract translation: 描述用于在无线通信系统中发送控制信息的技术。 在一方面，UE以DFT和跨越时间的正交序列跨频率扩展控制信息，以获得控制信息的输出数据。 在一种设计中，UE在N个下行链路子帧中接收N个HARQ进程的码字，确定每个HARQ进程的ACK值，对N个HARQ进程的N个ACK值进行编码以获得ACK信息，生成ACK信息的输出数据，并发送 M个上行链路子帧之一的输出数据。 在另一方面，基于利用时域和频域中的码分复用的第一编码和复用方案处理第一控制信息。 基于利用时域中的码分复用的第二编码和复用方案来处理第二控制信息，并在频域上扩展。

公开(公告)号：US20090046570A1

公开(公告)日：2009-02-19

申请号：US12189483

申请日：2008-08-11

Applicant: Sandip Sarkar ,  Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Juan Montojo

Inventor： Sandip Sarkar ,  Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Juan Montojo

IPC: H04J11/00

CPC classification number: H04B7/0417 ,  H04B7/0434 ,  H04B7/063 ,  H04B7/0632 ,  H04L5/14 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: Techniques for sending multiple-input multiple-output (MIMO) transmissions in wireless communication systems are described. In one design, a transmitter sends a first reference signal via a first link, e.g., a cell-specific reference signal via the downlink. The transmitter receives channel quality indicator (CQI) information determined by a receiver based on the first reference signal. The transmitter also receives a second reference signal from the receiver via a second link, e.g., a sounding reference signal via the uplink. The transmitter obtains at least one MIMO channel matrix for the first link based on the second reference signal. The transmitter determines at least one precoding matrix based on the at least one MIMO channel matrix, e.g., in accordance with ideal eigen-beamforming or pseudo eigen-beamforming. The transmitter then sends a data transmission to the receiver based on the at least one precoding matrix and the CQI information.

Abstract translation: 描述了在无线通信系统中发送多输入多输出（MIMO）传输的技术。 在一种设计中，发射机经由第一链路发送第一参考信号，例如经由下行链路的小区特定参考信号。 发射机基于第一参考信号接收由接收机确定的信道质量指示符（CQI）信息。 发射机还经由第二链路从接收机接收第二参考信号，例如经由上行链路的探测参考信号。 发射机基于第二参考信号获得用于第一链路的至少一个MIMO信道矩阵。 发射机基于至少一个MIMO信道矩阵来确定至少一个预编码矩阵，例如，根据理想的本征波束形成或伪特征波束形成。 然后，发射机基于至少一个预编码矩阵和CQI信息向接收机发送数据传输。

公开(公告)号：US20080089282A1

公开(公告)日：2008-04-17

申请号：US11842827

申请日：2007-08-21

Applicant: Durga Malladi ,  Byoung-Hoon Kim ,  Juan Montojo

Inventor： Durga Malladi ,  Byoung-Hoon Kim ,  Juan Montojo

IPC: H04Q7/00 ,  H04L27/28

CPC classification number: H04L27/2655 ,  H04J11/0069 ,  H04L5/0007 ,  H04L5/0064 ,  H04L5/0091 ,  H04L27/2675

Abstract: Systems and methods allow cell acquisition in a wireless communication system in frequency division multiple access mode of operation. Code sequences transmitted over primary synchronization channel (P-SCH) enable detection of symbol boundary, cyclic prefix duration, and indication of broadcast channel bandwidth. Sequences transmitted over secondary synchronization channel (S-SCH) afford radio frame boundary detection, cell identification, and broadcast channel bandwidth indication. Cell identification can be conveyed jointly between P-SCH and S-SCH codes. Broadcast channel sequences convey cyclic prefix timing, system bandwidth and other system information. Relay of cell acquisition information, as well as multiple-cell acquisition when wireless system operates with frequency reuse are described.

Abstract translation: 系统和方法允许在频分多址操作模式下的无线通信系统中的小区获取。 通过主同步信道（P-SCH）发送的码序列能够检测符号边界，循环前缀持续时间和广播信道带宽的指示。 通过次同步信道（S-SCH）发送的序列提供无线帧边界检测，小区识别和广播信道带宽指示。 小区识别可以在P-SCH和S-SCH码之间共同传送。 广播频道序列传送循环前缀时序，系统带宽和其他系统信息。 描述了无线系统在频率重用时工作的小区获取信息的中继，以及多小区采集。

公开(公告)号：US20070242766A1

公开(公告)日：2007-10-18

申请号：US11688235

申请日：2007-03-19

Applicant: Hao Xu ,  Byoung-Hoon Kim ,  Durga Malladi

Inventor： Hao Xu ,  Byoung-Hoon Kim ,  Durga Malladi

IPC: H04K1/10

CPC classification number: H04L1/0002 ,  H04L1/0025 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/023 ,  H04L25/0206 ,  H04L27/2608

Abstract: Various methods and systems for determining reverse-link data rates in a multi-user communication system are disclosed. For example, an apparatus for controlling a data rate of at least a first UE in a multi-user communication system is disclosed. The apparatus may include a channel estimation device configured to determine channel estimates for a plurality of different reverse-link signals to produce a plurality of channel estimates, a demodulation device configured to determine a first signal-to-noise (SNR) ratio for the first UE using the plurality of different channels estimates, and a data rate determining device configured to determine a first reverse-link data rate for the first UE using the first SNR.

Abstract translation: 公开了用于在多用户通信系统中确定反向链路数据速率的各种方法和系统。 例如，公开了一种用于在多用户通信系统中控制至少第一UE的数据速率的装置。 该装置可以包括：信道估计装置，被配置为确定多个不同反向链路信号的信道估计以产生多个信道估计;解调装置，被配置为确定第一信道估计的第一信噪比 UE使用多个不同信道估计，以及数据速率确定装置，被配置为使用第一SNR确定第一UE的第一反向链路数据速率。

公开(公告)号：US20070223423A1

公开(公告)日：2007-09-27

申请号：US11686951

申请日：2007-03-15

Applicant: Byoung-Hoon Kim ,  Durga Malladi

Inventor： Byoung-Hoon Kim ,  Durga Malladi

IPC: H04Q7/00

CPC classification number: H04B7/0452 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0665 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/002 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0035 ,  H04L1/06

Abstract: Techniques for supporting MIMO transmission are described. User equipments (UEs) are classified into a first group of UEs to be scheduled individually and a second group of UEs that can be scheduled together. The classification may be based upon the number of transmit and receive antennas, sector loading, data requirements, long-term channel statistics, the number of UEs, etc. Channel quality indicator (CQI) information received from the UEs is interpreted in different manners depending on the groups to which the UEs belong. A single UE may be selected at a time from the first group or multiple UEs may be selected at a time from the second group for MIMO transmission. A MIMO transmission may be sent to a single UE in the first group or multiple UEs in the second group at rates selected based upon the CQI information.

Abstract translation: 描述了支持MIMO传输的技术。 用户设备（UE）被分类为要单独调度的第一组UE和可以一起调度的第二组UE。 分类可以基于发射和接收天线的数量，扇区负载，数据需求，长期信道统计，UE的数量等。从UE接收的信道质量指示符（CQI）信息以不同的方式被解释，这取决于 在UE所属的组上。 可以从第一组一次选择单个UE，或者可以从第二组一次选择多个UE进行MIMO传输。 可以基于CQI信息选择的速率将MIMO传输发送到第一组中的单个UE或第二组中的多个UE。

公开(公告)号：US20070223422A1

公开(公告)日：2007-09-27

申请号：US11686950

申请日：2007-03-15

Applicant: Byoung-Hoon Kim ,  Durga Malladi

Inventor： Byoung-Hoon Kim ,  Durga Malladi

IPC: H04Q7/00

CPC classification number: H04B7/0452 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0634 ,  H04L1/06 ,  H04L1/1812 ,  H04L1/1854 ,  H04L1/1887 ,  H04L27/2608

Abstract: Techniques for supporting MIMO transmission are described. Users are classified into a first group of users to be scheduled individually for MIMO transmission and a second group of users that can be scheduled together for MIMO transmission. Transmission resources are allocated to the first and second groups, e.g., based upon various criteria such as the number of users in each group, data requirements of the users, total loading for each group, etc. The transmission resources may be hybrid automatic retransmission (HARQ) interlaces, frequency channels, time frequency resources, etc. The resource allocation may be semi-static. The transmission resources allocated to each group are used for data transmission on the downlink and/or uplink for the users in the group. HARQ with blanking may be used for data transmission for the users in the first group. HARQ without blanking may be used for data transmission for the users in the second group.

Abstract translation: 描述了支持MIMO传输的技术。 用户被分类为要单独调度用于MIMO传输的第一组用户和可以一起调度用于MIMO传输的第二组用户。 传输资源分配给第一组和第二组，例如基于各组用户数，各用户的数据需求，每个组的总负载等各种标准。传输资源可以是混合自动重传（ HARQ）交织，频率信道，时间频率资源等。资源分配可以是半静态的。 分配给每个组的传输资源用于组中用户的下行链路和/或上行链路上的数据传输。 具有消隐的HARQ可以用于第一组中的用户的数据传输。 不消消息的HARQ可以用于第二组中的用户的数据传输。

公开(公告)号：US20060205357A1

公开(公告)日：2006-09-14

申请号：US11078470

申请日：2005-03-11

Applicant: Byoung-Hoon Kim

Inventor： Byoung-Hoon Kim

IPC: H04B7/00 ,  H04B1/00

CPC classification number: H04L1/0656 ,  H04B7/04 ,  H04B7/0632 ,  H04L1/0675

Abstract: Systems and methods for improving the performance of a MIMO wireless communication system by reducing the amount of uplink resources that are needed to provide channel performance feedback for the adjustment of data rates on the downlink MIMO channels. In one embodiment, a method comprises encoding each of a set of data streams according to corresponding data rates, permuting the data streams on a set of MIMO channels according to a full permutation of combinations, transmitting the permuted data streams, receiving the permuted data streams, decoding and determining an SNR for each of the data streams, computing a condensed SNR metric for the set of data streams, providing the condensed metric as feedback, determining a set of individual SNR metrics for the data streams based on the condensed SNR metric, and adjusting the data rates at which the data streams are encoded based on the individual SNR metrics.

公开(公告)号：US20060166382A1

公开(公告)日：2006-07-27

申请号：US11342228

申请日：2006-01-26

Applicant: Byoung-Hoon Kim

Inventor： Byoung-Hoon Kim

IPC: H01L21/66

CPC classification number: H01L22/20

Abstract: A method and apparatus for detecting backside particles during wafer processing is provided. The method includes holding a wafer with vacuum pressure, detecting the presence of particles on a backside of the wafer while holding the wafer with vacuum pressure, transferring the wafer into a process chamber and performing a wafer processing in the process chamber. The presence of particles may be detected if the vacuum pressure varies out of a predetermined range.

Abstract translation: 提供了一种用于在晶片处理期间检测背面颗粒的方法和装置。 该方法包括以真空压力保持晶片，在真空压力下保持晶片的同时检测晶片背面的颗粒的存在，将晶片转移到处理室中并在处理室中执行晶片处理。 如果真空压力在预定范围内变化，则可以检测颗粒的存在。