公开(公告)号：US08923249B2

公开(公告)日：2014-12-30

申请号：US12410694

申请日：2009-03-25

申请人： Byoung-Hoon Kim ,  Juan Montojo ,  Peter Gaal

发明人： Byoung-Hoon Kim ,  Juan Montojo ,  Peter Gaal

IPC分类号： H04B7/216 ,  G06F1/02 ,  H04L25/03 ,  H04L5/00

CPC分类号： H04L25/03866 ,  H04L5/0007

摘要： A wireless communications method is provided. The method includes employing a processor executing computer executable instructions stored on a computer readable storage medium to implement various acts. The method also includes generating cyclic shifts for a sequence generator by masking shift register output values with one or more vectors. The method includes forwarding the sequence generator to a future state based in part on the output values and the vectors.

摘要翻译： 提供了一种无线通信方法。 该方法包括采用执行存储在计算机可读存储介质上的计算机可执行指令来执行各种动作的处理器。 该方法还包括通过用一个或多个向量屏蔽移位寄存器输出值来产生序列发生器的循环移位。 该方法包括部分地基于输出值和向量将序列发生器转发到将来的状态。

公开(公告)号：US08891637B2

公开(公告)日：2014-11-18

申请号：US11672854

申请日：2007-02-08

申请人： Byoung-Hoon Kim ,  Durga Prasad Mailadi

发明人： Byoung-Hoon Kim ,  Durga Prasad Mailadi

IPC分类号： H04L27/28 ,  H04L1/00 ,  H04L25/03 ,  H04L27/26

CPC分类号： H04L1/0001 ,  H04L1/0003 ,  H04L25/03828 ,  H04L27/2614 ,  Y02D50/10

摘要： Techniques for performing spectral shaping to achieve a desired peak-to-average ratio (PAR) are described. Spectral shaping may be selectively performed for a single-carrier frequency division multiplexing (SC-FDM) signal based on one or more criteria, e.g., in transmit power limited conditions and/or if a modulation scheme with lower PAR is unavailable. At least one parameter of a window function or spectral shaping filter may also be adjusted based on at least one characteristic of the SC-FDM signal. For example, the roll-off of the spectral shaping filter may be adjusted based on the modulation scheme and/or the number of subcarriers used for the SC-FDM signal. A transmitter may perform spectral shaping on modulation symbols, if enabled, to obtain spectrally shaped symbols. Spectral shaping may be performed in the frequency domain either within an allocated bandwidth or with bandwidth expansion. The SC-FDM signal may be generated based on the spectrally shaped symbols.

摘要翻译： 描述了进行光谱整形以达到期望的峰均比（PAR）的技术。 可以基于一个或多个准则，例如在发射功率受限状态和/或如果具有较低PAR的调制方案不可用，可以针对单载波频分复用（SC-FDM）信号选择性地执行频谱整形。 还可以基于SC-FDM信号的至少一个特性来调整窗口函数或频谱整形滤波器的至少一个参数。 例如，可以基于用于SC-FDM信号的调制方案和/或子载波的数量来调整频谱整形滤波器的滚降。 发射机可以在调制符号上执行频谱整形，如果使能，则获得频谱形状的符号。 光谱整形可以在分配的带宽内或频带扩展中在频域中执行。 可以基于频谱形状的符号来生成SC-FDM信号。

公开(公告)号：US08792573B2

公开(公告)日：2014-07-29

申请号：US13378038

申请日：2009-11-17

申请人： Byoung-Hoon Kim ,  Wonjin Sung ,  Jaewon Chang ,  Jun-Ho Jo ,  Dong-Uk Lee ,  Jaewon Kim ,  Ki Jun Kim

发明人： Byoung-Hoon Kim ,  Wonjin Sung ,  Jaewon Chang ,  Jun-Ho Jo ,  Dong-Uk Lee ,  Jaewon Kim ,  Ki Jun Kim

IPC分类号： H04L5/12 ,  H04L23/02

CPC分类号： H04W52/40 ,  H04B7/0404 ,  H04B7/0639 ,  H04W52/241 ,  H04W52/247

摘要： Disclosed are a method and apparatus capable of enhancing a closed loop multi-input multi-output (MIMO) capacity through distributed discrete power control in the case of cooperatively transmitting information to multiple users through a downlink.

摘要翻译： 公开了一种在通过下行链路向多个用户协同传输信息的情况下，能够通过分布式离散功率控制来提高闭环多输入多输出（MIMO）容量的方法和装置。

公开(公告)号：US08750788B2

公开(公告)日：2014-06-10

申请号：US13262619

申请日：2010-04-02

申请人： Dong-In Kim ,  Wan Choi ,  Jong-Yeoul Ryu ,  Han-Byul Seo ,  Byoung-Hoon Kim

发明人： Dong-In Kim ,  Wan Choi ,  Jong-Yeoul Ryu ,  Han-Byul Seo ,  Byoung-Hoon Kim

IPC分类号： H04B7/14

CPC分类号： H04B7/15592 ,  H04L1/0045 ,  H04L1/1829 ,  H04W40/22

摘要： The present invention relates to a data transmission/receiving method and apparatus for overcoming interference between multiple data streams, by relaying only part of multiple data streams that are received from a source node during collaborative data transmission employing relay nodes. The multiple data stream transmission method of the present invention comprises: receiving a plurality of data streams from a source node; decoding the plurality of data streams received; selecting a portion of the successful decoded data streams; encoding the selected portion of the data streams; and sending the encoded data stream portion to a destination node.

摘要翻译： 本发明涉及一种数据发送/接收方法和装置，用于通过在使用中继节点的协作数据传输期间仅中继从源节点接收的多个数据流中的一部分来克服多个数据流之间的干扰。 本发明的多数据流传输方法包括：从源节点接收多个数据流; 解码所接收的多个数据流; 选择成功解码的数据流的一部分; 编码数据流的所选部分; 并将编码数据流部分发送到目的地节点。

公开(公告)号：US08737287B2

公开(公告)日：2014-05-27

申请号：US13389437

申请日：2010-07-30

申请人： Han-Byul Seo ,  Daeyoung Park ,  Byoung-Hoon Kim

发明人： Han-Byul Seo ,  Daeyoung Park ,  Byoung-Hoon Kim

IPC分类号： H04B7/14

CPC分类号： H04W72/1252 ,  H04W84/047

摘要： Disclosed are a packet scheduling method and apparatus in a relay network. A scheduling method of a relay station in a relay communication system includes: receiving information regarding an amount of generated data to be transmitted to a user from a base station; estimating the size of a queue of the base station storing the data to be transmitted to the user based on the amount of generated data received from the base station; obtaining the size of a virtual queue in which overall data to be transmitted to a user with reference to the estimated size of the queue of the base station and the size of a queue of the relay station storing data to be transmitted to a user; performing scheduling to allocate resource based on the size of the virtual queue; and transmitting data to the user based on the scheduling results.

摘要翻译： 公开了中继网络中的分组调度方法和装置。 中继通信系统中的中继站的调度方法包括：从基站接收关于发送给用户的生成数据量的信息; 基于从基站接收的生成数据的量，估计存储要发送给用户的数据的基站的队列的大小; 参考基站的队列的估计大小和存储要发送给用户的数据的中继站的队列的大小，获得要发送给用户的总体数据的虚拟队列的大小; 执行调度以基于所述虚拟队列的大小来分配资源; 并根据调度结果向用户发送数据。

公开(公告)号：US08600413B2

公开(公告)日：2013-12-03

申请号：US12259809

申请日：2008-10-28

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

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

IPC分类号： H04W68/00

CPC分类号： H04W68/02 ,  H04W68/025

摘要： Systems and methods for utilizing paging group IDs and paging indicators are disclosed for PDCCH and PDSCH transmissions to mobile terminals in a mobile communication system. By use of the paging group IDs and paging indicators, various groups of mobile terminals, including subsets of those groups can be paged with reduced decoding requirements. Nesting of the grouping is exploited and packing of the PDCCH frame to accomplish efficient use is described.

公开(公告)号：US08503555B2

公开(公告)日：2013-08-06

申请号：US13214621

申请日：2011-08-22

申请人： Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Jelena Damnjanovic

发明人： Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Jelena Damnjanovic

IPC分类号： H04K1/10

CPC分类号： H04L1/0026 ,  H04B7/0632 ,  H04B7/0641 ,  H04B7/066 ,  H04L1/0029 ,  H04L1/06 ,  H04L27/2608

摘要： Techniques for efficiently sending channel state information using differential encoding are described. Differential encoding may be performed across space, across frequency, across space and frequency, across space, frequency and time, or across some other combination of dimensions. In one design, spatial state information may be determined for multiple spatial channels on multiple subbands. The spatial channels may correspond to different antennas, different precoding vectors, etc. Channel quality indicator (CQI) values may be obtained for the multiple spatial channels on the multiple subbands. The CQI values may be differentially encoded across the multiple spatial channels and the multiple subbands to obtain differential CQI information. In another design, CQI values may be obtained for multiple spatial channels on the multiple subbands in multiple time intervals and may be differentially encoded across space, frequency and time. The differential CQI information and the spatial state information may be sent as feedback.

摘要翻译： 描述使用差分编码有效地发送信道状态信息的技术。 差分编码可以跨越空间，跨频率，跨空间和频率跨越空间，频率和时间，或跨越一些其他维度组合来执行。 在一种设计中，可以为多个子带上的多个空间信道确定空间状态信息。 空间信道可以对应于不同的天线，不同的预编码向量等。可以为多个子带上的多个空间信道获得信道质量指示符（CQI）值。 CQI值可以在多个空间信道和多个子带之间进行差分编码，以获得差分CQI信息。 在另一种设计中，可以在多个时间间隔中对多个子带上的多个空间信道获得CQI值，并且可以在空间，频率和时间之间进行差分编码。 差分CQI信息和空间状态信息可以作为反馈发送。

公开(公告)号：US08412257B2

公开(公告)日：2013-04-02

申请号：US13162420

申请日：2011-06-16

申请人： Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Sandip Sarkar

发明人： Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Sandip Sarkar

IPC分类号： H04B7/00

CPC分类号： H04L1/0036 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0034 ,  H04L1/16 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0037 ,  H04L5/006

摘要： Techniques for selecting transmit formats in a manner to account for the degrees of resource reuse for multiple data streams sent simultaneously from multiple antennas are described. The degree of resource reuse for each data stream indicates the amount of reuse of resources (e.g., orthogonal codes or subcarriers) observed by that stream. Interference estimates for the multiple data streams are derived based on an initial resource assignment. The degrees of resource reuse are determined based on the interference estimates and are used to derive at least one correction factor. At least one transmit format is then selected for the data streams using the at least one correction factor. Each data stream is associated with a transmit format that indicates the amount of resources to use for the data stream and other parameters. Resources are assigned to each data stream in accordance with its transmit format.

摘要翻译： 描述了以考虑从多个天线同时发送的多个数据流的资源重用程度来选择发送格式的技术。 每个数据流的资源重用程度指示由该流观察到的资源（例如，正交码或子载波）的重用量。 基于初始资源分配导出多个数据流的干扰估计。 基于干扰估计来确定资源重用度，并且用于导出至少一个校正因子。 然后使用至少一个校正因子为数据流选择至少一个发送格式。 每个数据流与指示用于数据流的资源量和其他参数的发送格式相关联。 根据其发送格式将资源分配给每个数据流。

公开(公告)号：US08385276B2

公开(公告)日：2013-02-26

申请号：US12500517

申请日：2009-07-09

申请人： Byoung-Hoon Kim ,  Peter Gaal ,  Yongbin Wei

发明人： Byoung-Hoon Kim ,  Peter Gaal ,  Yongbin Wei

IPC分类号： H04W4/00

CPC分类号： H04L27/2657 ,  H04L27/2676 ,  H04L27/2695 ,  H04L27/3845

摘要： Systems and methodologies are described that facilitate computing discriminator signals for frequency tracking in wireless communications. The discriminator signal can be computed based at least in part on representations of a received signal shifted upward by a portion of a frequency tone and downward by the portion of the frequency tone. The shifted signals can be summed, and a dot product of the summed signals and a channel estimation of the original signal can be computed to remove uncertain frequency response due to fading. The discriminator signal can be computed as the imaginary portion of the dot product. A frequency error offset can be determined from the discriminator signal and applied to a receiver to tune alignment of the receiver with frequencies of received signals.

摘要翻译： 描述了在无线通信中促进用于频率跟踪的鉴别器信号的系统和方法。 可以至少部分地基于由向上移动频率一部分并且向下移动频率音调的部分的接收信号的表示来计算鉴别器信号。 移位的信号可以相加，并且可以计算求和的信号和原始信号的信道估计的积积以消除由于衰落引起的不确定的频率响应。 鉴别器信号可以计算为点积的虚部。 可以根据鉴别器信号确定频率误差偏移，并将其应用于接收机，以便将接收机与接收信号的频率进行对准。

公开(公告)号：US20130003816A1

公开(公告)日：2013-01-03

申请号：US13608116

申请日：2012-09-10

申请人： Byoung-Hoon Kim

发明人： Byoung-Hoon Kim

IPC分类号： H04L27/01

CPC分类号： H04B7/04 ,  H04L25/0204 ,  H04L25/0228

摘要： Techniques for performing channel and noise estimation for a MIMO transmission sent from multiple transmit antennas to multiple receive antennas are described. Samples are obtained from the receive antennas. For a first scheme, channel estimates are derived by correlating the samples with at least one pilot sequence, and signal, noise and interference statistics are also estimated based on the samples. For a second scheme, total received energy as well as signal and interference energy are estimated based on the samples. Noise is then estimated based on the estimated total received energy and the estimated signal and interference energy. For a third scheme, signal and on-time interference statistics are estimated based on the samples. Noise and multipath interference statistics are also estimated based on the samples. Signal, noise and interference statistics are then estimated based on the estimated signal and on-time interference statistics and the estimated noise and multipath interference statistics.

摘要翻译： 描述用于对从多个发射天线发送到多个接收天线的MIMO传输进行信道和噪声估计的技术。 从接收天线获得样本。 对于第一方案，通过将样本与至少一个导频序列相关而导出信道估计，并且信号，噪声和干扰统计也是基于样本估计的。 对于第二种方案，基于样本估计总接收能量以及信号和干扰能量。 然后基于估计的总接收能量和估计的信号和干扰能量来估计噪声。 对于第三种方案，基于样本估计信号和准时干扰统计。 噪声和多径干扰统计也根据样本进行估计。 然后，基于估计的信号和准时干扰统计以及估计的噪声和多径干扰统计来估计信号，噪声和干扰统计。