公开(公告)号：US20110002430A1

公开(公告)日：2011-01-06

申请号：US12439711

申请日：2007-10-01

Applicant: Byoung-Hoon Kim ,  Durga Prasad Malladi

Inventor： Byoung-Hoon Kim ,  Durga Prasad Malladi

IPC: H04L7/04

CPC classification number: H04L5/0053 ,  H04B1/7083 ,  H04B2201/70701 ,  H04J11/0069 ,  H04L5/0007

Abstract: To support cell search, multiple (e.g., two) synchronization transmissions are sent in a frame with non-uniform spacing. Information is conveyed via the non-equal distances between consecutive synchronization transmissions. Multiple levels of non-uniform spacing may be used to convey different types of information. In one design, the multiple synchronization transmissions are sent in different subframes of a frame, and each synchronization transmission is sent in one of multiple symbol periods in a respective subframe. The synchronization transmissions may be sent in non-evenly spaced subframes to convey frame boundary. One synchronization transmission may be sent in one of multiple possible symbol periods depending on the information, e.g., a particular group of cell IDs, being conveyed. The distances between synchronization transmissions may also be used to convey cyclic prefix length. A secondary synchronization transmission carrying a cell ID may be sent at a predetermined offset from one of the multiple synchronization transmissions.

Abstract translation: 为了支持小区搜索，在具有不均匀间隔的帧中发送多个（例如，两个）同步传输。 通过连续的同步传输之间的不相等的距离来传送信息。 可以使用多个级别的不均匀间距来传达不同类型的信息。 在一种设计中，多个同步传输在帧的不同子帧中发送，并且每个同步传输在相应子帧中的多个符号周期之一中发送。 可以以非均匀间隔的子帧发送同步传输以传送帧边界。 可以根据正在传送的信息（例如，特定的小区ID组）以多个可能的符号周期之一发送一个同步传输。 同步传输之间的距离也可用于传送循环前缀长度。 可以以多个同步传输之一的预定偏移量发送携带小区ID的辅同步传输。

公开(公告)号：US07839308B2

公开(公告)日：2010-11-23

申请号：US12027972

申请日：2008-02-07

Applicant: Byoung-Hoon Kim ,  Dung N. Doan ,  Durga Prasad Malladi

Inventor： Byoung-Hoon Kim ,  Dung N. Doan ,  Durga Prasad Malladi

IPC: H03M7/34 ,  H03M7/38

CPC classification number: H04W28/18 ,  H04L1/001 ,  H04L1/0033 ,  H04L1/0072 ,  H04L1/0079 ,  H04L1/06 ,  H04L5/0007 ,  H04L27/2601

Abstract: Systems, methodologies, and devices are described that can facilitate bandwidth efficient non-coherent signaling for uplink control channel transmissions. A communication device (e.g., a mobile device, base station) can be configured to utilize or generate a set of complex orthogonal codewords to facilitate transmission of control channel information using non-coherent signaling in a bandwidth efficient manner. A complex orthogonal codeword set can comprise a first subset of codewords where such codewords have a desirable cross-correlation property and another subset(s) of codewords that can include expurgated codewords, where the expurgated codewords can include discarded codewords and/or codeword pairs that produce a worst-case cross-correlation property. The codeword set and subsets are determined based at least in part on a predefined codeword criterion. A portion of the discarded codewords can be used for other purposes, such as erasure decoding, interference-level estimation, and/or multi-mode control channel operation.

Abstract translation: 描述了可以促进用于上行链路控制信道传输的带宽有效的非相干信令的系统，方法和设备。 通信设备（例如，移动设备，基站）可以被配置为利用或生成一组复杂的正交码字，以便以带宽有效的方式使用非相干信令来传输控制信道信息。 复数正交码字集合可以包括这样的码字的第一子集，其中这些码字具有期望的互相关属性，并且另一个码字子集可以包括被排除的码字，其中被排除的码字可以包括丢弃的码字和/或码字对， 产生最坏情况的互相关属性。 至少部分地基于预定义的码字标准来确定码字集合和子集。 丢弃的码字的一部分可以用于其它目的，例如擦除解码，干扰电平估计和/或多模式控制信道操作。

公开(公告)号：US20100027697A1

公开(公告)日：2010-02-04

申请号：US12444499

申请日：2007-11-06

Applicant: Durga Prasad Malladi ,  Byoung-Hoon Kim ,  Taesang Yoo

Inventor： Durga Prasad Malladi ,  Byoung-Hoon Kim ,  Taesang Yoo

IPC: H04L27/28 ,  H04L27/00

CPC classification number: H04B7/065 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0628 ,  H04B7/0641 ,  H04L1/0026 ,  H04L1/0625 ,  H04L1/0656 ,  H04L1/1812

Abstract: Techniques for supporting MIMO transmission with layer permutation are described. In one aspect, multiple codewords may be generated for transmission from multiple antennas (e.g., virtual antennas), with the number of codewords being less than the number of antennas. Each codeword may be mapped across the multiple antennas. Two codewords may be generated. For rank 3, the first codeword may be mapped to one layer (or one antenna on each subcarrier), and the second codeword may be mapped to two layers (or two antennas on each subcarrier). For rank 4, each codeword may be mapped to two layers. In another aspect, a base CQI indicative of an average signal quality may be determined. A delta CQI indicative of improvement over the average signal quality may also be determined. In yet another aspect, selection may be performed with different penalty factors for different ranks or number of codewords.

Abstract translation: 描述了用于支持具有层置换的MIMO传输的技术。 在一个方面，可以生成多个码字用于从多个天线（例如，虚拟天线）的发射，其中码字的数量小于天线的数量。 每个码字可以跨多个天线映射。 可以生成两个码字。 对于秩3，第一码字可以映射到一个层（或每个子载波上的一个天线），并且第二码字可以映射到两个层（或每个子载波上的两个天线）。 对于等级4，每个码字可以映射到两个层。 另一方面，可以确定表示平均信号质量的基本CQI。 也可以确定表示对平均信号质量的改善的增量CQI。 在另一方面，可以针对不同等级或码字数量对不同的惩罚因素进行选择。

公开(公告)号：US20100002800A1

公开(公告)日：2010-01-07

申请号：US12458216

申请日：2009-07-02

Applicant: Byoung-Hoon Kim ,  Dae Won Lee ,  Byeongwoo Kang ,  Bong Hoe Kim ,  Yujin Noh

Inventor： Byoung-Hoon Kim ,  Dae Won Lee ,  Byeongwoo Kang ,  Bong Hoe Kim ,  Yujin Noh

IPC: H04L27/00

CPC classification number: H04W72/042 ,  H04B1/10 ,  H04B7/02 ,  H04B7/0404 ,  H04B7/0682 ,  H04B7/0825 ,  H04B2201/71632 ,  H04B2215/00 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0062

Abstract: A method and apparatus of transmitting a reference signal in a wireless communication system is provided. The method includes generating a precoded reference signal or a non-precoded reference signal in accordance with a rank, and transmitting the generated reference signal. Uplink transmission using multiple transmit antennas is supported through reference signal design and related control signaling.

Abstract translation: 提供了一种在无线通信系统中发送参考信号的方法和装置。 该方法包括根据秩产生预编码的参考信号或非预编码的参考信号，以及发送生成的参考信号。 通过参考信号设计和相关控制信令支持使用多个发射天线的上行链路传输。

公开(公告)号：US20090180561A1

公开(公告)日：2009-07-16

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

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：US20090046805A1

公开(公告)日：2009-02-19

申请号：US12191577

申请日：2008-08-14

Applicant: Byoung-Hoon Kim ,  Durga Prasad Malladi

Inventor： Byoung-Hoon Kim ,  Durga Prasad Malladi

IPC: H04L27/00

CPC classification number: H04L1/0026 ,  H04L1/003 ,  H04L1/1671 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0057 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: Systems and methodologies are described that facilitate encoding feedback or control information into a compact payload. In particular, a rank indicator, a precoding matrix indicator and channel quality indicators are packaged into a control channel payload that fits into a single sub-frame. The payload format is determined based at least in part on an antenna configuration or channel quality indicator granularity. In addition, hybrid automatic repeat requests can be included in the payload.

Abstract translation: 描述了有助于将反馈或控制信息编码成紧凑的有效载荷的系统和方法。 特别地，等级指示符，预编码矩阵指示符和信道质量指示符被封装成适合于单个子帧的控制信道有效载荷。 至少部分地基于天线配置或信道质量指示符粒度确定有效载荷格式。 此外，有效载荷中可以包含混合自动重复请求。

公开(公告)号：US20080247364A1

公开(公告)日：2008-10-09

申请号：US12026360

申请日：2008-02-05

Applicant: Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Xiaoxia Zhang ,  Taesang Yoo

Inventor： Byoung-Hoon Kim ,  Durga Prasad Malladi ,  Xiaoxia Zhang ,  Taesang Yoo

IPC: H04J3/00 ,  H04B7/02

CPC classification number: H04B7/0671 ,  H04B7/0473 ,  H04L5/0023 ,  H04L25/03898 ,  H04L27/2646

Abstract: Techniques for sending a MIMO transmission using a combination of cyclic delay diversity and precoding are described. A set of delays (e.g., zero delay, small delay, and large delay) for cyclic delay diversity and a set of precoding matrices may be supported. In one design, a Node B may select a delay specifically for a UE or for a set of UEs served by the Node B. In another design, a UE may evaluate different combinations of precoding matrix and delay, determine the combination with the best performance, and send this combination of precoding matrix and delay to the Node B. The Node B may perform precoding with the precoding matrix and then processing for cyclic delay diversity based on the selected delay. Alternatively, the Node B may perform processing for cyclic delay diversity based on the selected delay and then precoding with the precoding matrix.

Abstract translation: 描述了使用循环延迟分集和预编码的组合来发送MIMO传输的技术。 可以支持用于循环延迟分集和一组预编码矩阵的一组延迟（例如，零延迟，小延迟和大延迟）。 在一种设计中，节点B可以针对UE或由节点B服务的一组UE选择延迟。在另一种设计中，UE可以评估预编码矩阵和延迟的不同组合，确定具有最佳性能的组合 并将预编码矩阵和延迟的组合发送到节点B.节点B可以利用预编码矩阵执行预编码，然后基于所选择的延迟来执行循环延迟分集的处理。 或者，节点B可以基于所选择的延迟执行循环延迟分集的处理，然后用预编码矩阵进行预编码。

公开(公告)号：US20080165893A1

公开(公告)日：2008-07-10

申请号：US11971872

申请日：2008-01-09

Applicant: Durga Prasad Malladi ,  Byoung-Hoon Kim

Inventor： Durga Prasad Malladi ,  Byoung-Hoon Kim

IPC: H03H7/30

CPC classification number: H04L27/2613 ,  H04J13/0074 ,  H04J13/10 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0072 ,  H04L1/1607 ,  H04L1/1671 ,  H04L5/023 ,  H04W72/0406

Abstract: Techniques for transmitting information using cyclically shifted sequences are described. In one design, first and second sequences may be generated by cyclically shifting a base sequence by first and second amounts, respectively. The base sequence may be a CAZAC sequence, a PN sequence, or some other sequence having good correlation properties. The cyclic shifts for the first and second sequences may be determined based on a hopping pattern. A first modulated sequence may be generated based on the first sequence and a first modulation symbol and may be sent in a first time interval. A second modulated sequence may be generated based on the second sequence and a second modulation symbol and may be sent in a second time interval. Each modulated sequence may be sent on K consecutive subcarriers using localized frequency division multiplexing (LFDM)

Abstract translation: 描述了使用循环移位序列发送信息的技术。 在一种设计中，可以通过分别将碱基序列循环移位第一和第二量来产生第一和第二序列。 碱基序列可以是CAZAC序列，PN序列或具有良好相关性质的一些其它序列。 可以基于跳频图案来确定第一和第二序列的循环移位。 可以基于第一序列和第一调制符号来生成第一调制序列，并且可以在第一时间间隔中发送第一调制序列。 可以基于第二序列和第二调制符号来生成第二调制序列，并且可以在第二时间间隔中发送第二调制序列。 可以使用局部频分复用（LFDM）在K个连续子载波上发送每个调制序列

公开(公告)号：US07333534B2

公开(公告)日：2008-02-19

申请号：US10675986

申请日：2003-10-02

Applicant: Byoung-Gi Lee ,  Byoung-Hoon Kim

Inventor： Byoung-Gi Lee ,  Byoung-Hoon Kim

IPC: H04B1/707

CPC classification number: H04B1/7075

Abstract: Disclosed is a method for performing fast distributed sample acquisition (DSA). A spreader generates a data signal by spreading an incoming data stream over a range of spectrum according to a locally generated first main sequence, and samples the state sample of the main sequence. A sample spreader outputs a first state signal by spreading a symbol according to a locally generated first subsequence. A sample despreader reconstructs the transmitted binary orthogonal symbols by despreading the first state signal obtained from the sample spreader according to a locally generated second subsequence to detect the first main sequence state sample. A despreader compares the state sample obtained from the sample despreader with a locally generated state sample and makes correction on a local SRG to generate a second main sequence having new state. An incoming data stream is reconstructed by despreading the data signal obtained from the spreader according to the second main sequence.

Abstract translation: 公开了一种执行快速分布式采样采集（DSA）的方法。 扩展器通过根据本地生成的第一主序列在频谱范围上扩展输入数据流来生成数据信号，并对主序列的状态样本进行采样。 样本展开器通过根据本地生成的第一子序列扩展符号来输出第一状态信号。 样本解扩器通过根据本地生成的第二子序列解扩从样本展开器获得的第一状态信号来重构发送的二进制正交符号，以检测第一主序列状态样本。 解扩器将从样本解扩器获得的状态样本与本地生成的状态样本进行比较，并对本地SRG进行校正以生成具有新状态的第二主序列。 通过根据第二主序列解扩从扩展器获得的数据信号来重构输入数据流。

公开(公告)号：US20080032630A1

公开(公告)日：2008-02-07

申请号：US11687645

申请日：2007-03-17

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

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

IPC: H04J3/00

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来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。