公开(公告)号：US09294231B2

公开(公告)日：2016-03-22

申请号：US12047562

申请日：2008-03-13

Applicant: Durga Prasad Malladi ,  Byoung-Hoon Kim

Inventor： Durga Prasad Malladi ,  Byoung-Hoon Kim

IPC: H04L1/16 ,  H04L1/00 ,  H04L1/18

CPC classification number: H04L1/1671 ,  H04L1/0026 ,  H04L1/0057 ,  H04L1/0073 ,  H04L1/1812 ,  H04L1/1854

Abstract: Techniques for sending and receiving acknowledgement (ACK) information in a wireless communication system are described. A base station sends control information and data to a user equipment (UE) and receives ACK information from the UE. The base station performs detection for the ACK information based on (i) a first hypothesis for the control information being missed by the UE and (ii) a second hypothesis for the control information being received correctly by the UE. In one design, the ACK information may have a variable size, and the base station may perform detection for the ACK information based on different block codes for the first and second hypotheses. In another design, the ACK information may have a fixed size, and the base station may perform detection for the ACK information based on a single block code and obtain a fixed number of bits for the ACK information for both hypotheses.

Abstract translation: 描述了在无线通信系统中发送和接收确认（ACK）信息的技术。 基站向用户设备（UE）发送控制信息和数据，并从UE接收ACK信息。 基站根据（i）UE丢失的控制信息的第一假设和（ii）由UE正确接收到的控制信息的第二假设，对ACK信息执行检测。 在一种设计中，ACK信息可以具有可变大小，并且基站可以基于针对第一和第二假设的不同块代码来执行针对ACK信息的检测。 在另一种设计中，ACK信息可以具有固定的大小，并且基站可以基于单个块码执行针对ACK信息的检测，并为两个假设获得用于ACK信息的固定位数。

公开(公告)号：US09225452B2

公开(公告)日：2015-12-29

申请号：US12710933

申请日：2010-02-23

Applicant: Byoung-Hoon Kim ,  Yongbin Wei ,  Amir Dabbagh

Inventor： Byoung-Hoon Kim ,  Yongbin Wei ,  Amir Dabbagh

IPC: H04J13/00 ,  H04B7/06 ,  H04L25/02 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04J13/0003 ,  H04B7/0421 ,  H04B7/0671 ,  H04B7/0678 ,  H04B7/068 ,  H04B7/0697 ,  H04B17/309 ,  H04B2201/70701 ,  H04J3/00 ,  H04J13/0022 ,  H04J13/0059 ,  H04J13/0062 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/0051 ,  H04L5/06 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/2601 ,  H04L27/2613 ,  H04L27/2636

Abstract: Techniques for multiplexing pilots in a wireless transmission are described. In one aspect, a transmitter station generates multiple pilot sequences for multiple transmit antennas, with each pilot sequence comprising pilot symbols sent in the time domain on a different set of subcarriers. The transmitter station further generates multiple pilot transmissions for the transmit antennas based on the pilot sequences. In another aspect, a transmitter station generates multiple pilot sequences for multiple transmit antennas based on frequency-domain code division multiplexing (FD-CDM) of a Chu sequence defined by a transmitter-specific value. The transmitter station further generates multiple pilot transmissions for the transmit antennas based on the pilot sequences. In yet another aspect, a transmitter station generates multiple pilot transmissions for multiple transmit antennas based on a first multiplexing scheme and generates multiple data transmissions based on a second multiplexing scheme that is different from the first multiplexing scheme.

Abstract translation: 描述用于在无线传输中复用导频的技术。 在一个方面，发射机站为多个发射天线生成多个导频序列，每个导频序列包括在不同子载波集上的时域中发送的导频符号。 发射台还根据导频序列进一步为发射天线产生多个导频传输。 在另一方面，发射机站基于由发射机特定值定义的楚序列的频域码分复用（FD-CDM），为多个发射天线生成多个导频序列。 发射台还根据导频序列进一步为发射天线产生多个导频传输。 在另一方面，发射机站基于第一复用方案为多个发射天线生成多个导频传输，并且基于与第一复用方案不同的第二复用方案来生成多个数据传输。

公开(公告)号：US09148851B2

公开(公告)日：2015-09-29

申请号：US13817870

申请日：2011-03-02

Applicant: Jaewon Lim ,  Song Chong ,  Jeonghoon Mo ,  Jihwan Kim ,  Byoung-Hoon Kim ,  Jeongho Kwak

Inventor： Jaewon Lim ,  Song Chong ,  Jeonghoon Mo ,  Jihwan Kim ,  Byoung-Hoon Kim ,  Jeongho Kwak

IPC: H04B7/26 ,  H04B7/185 ,  H04W88/04 ,  H04W80/04 ,  H04W88/06 ,  H04J1/10 ,  H04J1/14 ,  H04J3/08 ,  H04W52/02 ,  H04W48/16 ,  H04W48/04

CPC classification number: H04W52/0206 ,  H04W48/04 ,  H04W48/16 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/164

Abstract: Specifically, according to one embodiment of the present invention, a method for searching for an access point is provided. The method for searching may comprises the steps of: a terminal measuring the position thereof; checking an access point located near the measured position of the terminal; determining whether or not the distance between the terminal and the access point is greater than the radius range searchable by the terminal; and searching for the access point when the distance between the terminal and the access point is less than the radius range.

Abstract translation: 具体地，根据本发明的一个实施例，提供了一种用于搜索接入点的方法。 搜索方法可以包括以下步骤：终端测量其位置; 检查靠近终端测量位置的接入点; 确定终端和接入点之间的距离是否大于终端可搜索的半径范围; 并且当终端和接入点之间的距离小于半径范围时，搜索接入点。

公开(公告)号：US09130791B2

公开(公告)日：2015-09-08

申请号：US11687645

申请日：2007-03-17

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

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

IPC: H04B17/00 ,  H04L25/02 ,  H04L27/26 ,  H04L1/00 ,  H04L1/02 ,  H04L1/06 ,  H04L5/02

CPC classification number: H04L5/0057 ,  H04B7/0413 ,  H04B7/0632 ,  H04B2201/70701 ,  H04L1/0002 ,  H04L1/02 ,  H04L1/06 ,  H04L5/023 ,  H04L25/0224 ,  H04L25/023 ,  H04L27/261 ,  H04W52/325 ,  H04W72/042

Abstract: Techniques for efficiently deriving uplink channel estimates without consuming much additional uplink resources are described. A user equipment (UE) may send a request for uplink resources on a request channel (REQCH) whenever the UE desires to transmit data on the uplink. The UE may send the REQCH on a set of subcarriers and from multiple antennas, e.g., send REQCH data on data subcarriers and pilot on pilot subcarriers. A node B may receive the request, estimate the complex channel gains for the pilot subcarriers based on received pilot symbols, and coherently demodulate received data symbols based on the channel gain estimates. The Node B may estimate the complex channel gains for the data subcarriers based on demodulated data symbols and derive a channel estimate for each UE antenna based on the channel gain estimates for the pilot and data subcarriers. The Node B may use the channel estimates for MIMO scheduling, subband scheduling, and rate selection.

Abstract translation: 描述了在不消耗大量附加上行链路资源的情况下有效地导出上行链路信道估计的技术。 每当UE希望在上行链路上发送数据时，用户设备（UE）可以在请求信道（REQCH）上发送上行链路资源的请求。 UE可以在一组子载波上从多个天线发送REQCH，例如在数据子载波上发送REQCH数据，并在导频子载波上导频。 节点B可以接收该请求，基于接收到的导频符号估计导频子载波的复信道增益，并且基于信道增益估计来相干地解调所接收的数据符号。 节点B可以基于解调的数据符号估计数据子载波的复信道增益，并且基于导频和数据子载波的信道增益估计导出每个UE天线的信道估计。 节点B可以使用用于MIMO调度，子带调度和速率选择的信道估计。

公开(公告)号：US09130612B2

公开(公告)日：2015-09-08

申请号：US12349232

申请日：2009-01-06

Applicant: Byoung-Hoon Kim ,  Taesang Yoo

Inventor： Byoung-Hoon Kim ,  Taesang Yoo

IPC: H04L27/28 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0413 ,  H04B7/0619 ,  H04B7/0671

Abstract: Systems and methodologies are described that facilitate creating a unified format that can accommodate various MIMO modes. The unified format can employed with a single payload size that includes uplink control information for each available MIMO mode. By packaging the payload with uplink control information related to each MIMO mode, the uplink control information can be utilized with any suitable or available MIMO mode.

Abstract translation: 描述了有助于创建可以适应各种MIMO模式的统一格式的系统和方法。 统一格式可以采用单个有效载荷大小，其包括每个可用MIMO模式的上行链路控制信息。 通过利用与每个MIMO模式相关的上行链路控制信息封装有效载荷，可以利用任何合适的或可用的MIMO模式来利用上行链路控制信息。

公开(公告)号：US08923249B2

公开(公告)日：2014-12-30

申请号：US12410694

申请日：2009-03-25

Applicant: Byoung-Hoon Kim ,  Juan Montojo ,  Peter Gaal

Inventor： Byoung-Hoon Kim ,  Juan Montojo ,  Peter Gaal

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

CPC classification number: H04L25/03866 ,  H04L5/0007

Abstract: 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.

Abstract translation: 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

Applicant: Byoung-Hoon Kim ,  Durga Prasad Mailadi

Inventor： Byoung-Hoon Kim ,  Durga Prasad Mailadi

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

CPC classification number: H04L1/0001 ,  H04L1/0003 ,  H04L25/03828 ,  H04L27/2614 ,  Y02D50/10

Abstract: 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.

Abstract translation: 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

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

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

IPC: H04L5/12 ,  H04L23/02

CPC classification number: H04W52/40 ,  H04B7/0404 ,  H04B7/0639 ,  H04W52/241 ,  H04W52/247

Abstract: 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.

Abstract translation: 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

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

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

IPC: H04B7/14

CPC classification number: H04B7/15592 ,  H04L1/0045 ,  H04L1/1829 ,  H04W40/22

Abstract: 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.

Abstract translation: 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

Applicant: Han-Byul Seo ,  Daeyoung Park ,  Byoung-Hoon Kim

Inventor： Han-Byul Seo ,  Daeyoung Park ,  Byoung-Hoon Kim

IPC: H04B7/14

CPC classification number: H04W72/1252 ,  H04W84/047

Abstract: 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.

Abstract translation: 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。