公开(公告)号：US08780957B2

公开(公告)日：2014-07-15

申请号：US11284601

申请日：2005-11-21

申请人： Byoung-Hoon Kim ,  Manuel Flury ,  Xiaoxia Zhang

发明人： Byoung-Hoon Kim ,  Manuel Flury ,  Xiaoxia Zhang

IPC分类号： H04B1/69

CPC分类号： H04B7/0891 ,  H04B7/02 ,  H04J13/00 ,  H04L2025/03426

摘要： Aspects of the invention provide an enhanced chip-level linear space-time equalizer 118 for multiple-input-multiple-output (MIMO) multi-code CDMA systems reusing same spreading codes in different transmit antennas 114. Reuse of the spreading codes at the transmitter 104, 204 creates an on-time inter-stream interference component (or cross-talk among distinct transmit antenna signals) which reuse the same spreading code as the desired signal in the soft metric sequence of the MIMO CDMA receiver after MMSE space-time equalization. The equalizer 118 has a MMSE weighting vector that takes the despreading effect into account.

摘要翻译： 本发明的方面提供了一种用于在不同发射天线114重复使用相同扩展码的多输入多输出（MIMO）多码CDMA系统的增强的芯片级线性时空均衡器114.再现利用发射机 104,204在MMSE空时均衡之后产生在MIMO CDMA接收机的软度量序列中重用与所需信号相同的扩展码的导通时间间干扰分量（或不同发射天线信号之间的串扰） 。 均衡器118具有考虑解扩效应的MMSE加权向量。

公开(公告)号：US07996032B2

公开(公告)日：2011-08-09

申请号：US11689962

申请日：2007-03-22

申请人： Durga Prasad Malladi ,  Byoung-Hoon Kim ,  Xiaoxia Zhang

发明人： Durga Prasad Malladi ,  Byoung-Hoon Kim ,  Xiaoxia Zhang

IPC分类号： H04B7/00

CPC分类号： H04W52/343 ,  H04W52/367

摘要： A method for controlling power in a wireless network is provided. The method includes determining a relative power parameter at a wireless device such as a mobile wireless terminal and receiving a load parameter at the wireless device, where the load parameter is associated with at least one other wireless cell. The method includes adjusting transmit power of the wireless device in view of the relative power parameter and the load parameter. In another embodiment, the transmit power can be controlled in view of an absolute power spectral density parameter.

摘要翻译： 提供了一种用于控制无线网络中的功率的方法。 该方法包括确定诸如移动无线终端的无线设备处的相对功率参数，并且在无线设备处接收负载参数，其中负载参数与至少一个其它无线小区相关联。 该方法包括根据相对功率参数和负载参数调整无线设备的发射功率。 在另一实施例中，可以根据绝对功率谱密度参数来控制发射功率。

公开(公告)号：US20070270175A1

公开(公告)日：2007-11-22

申请号：US11689962

申请日：2007-03-22

申请人： Durga Malladi ,  Byoung-Hoon Kim ,  Xiaoxia Zhang

发明人： Durga Malladi ,  Byoung-Hoon Kim ,  Xiaoxia Zhang

IPC分类号： H04B7/00 ,  H04Q7/20

CPC分类号： H04W52/343 ,  H04W52/367

摘要： A method for controlling power in a wireless network is provided. The method includes determining a relative power parameter at a wireless device such as a mobile wireless terminal and receiving a load parameter at the wireless device, where the load parameter is associated with at least one other wireless cell. The method includes adjusting transmit power of the wireless device in view of the relative power parameter and the load parameter. In another embodiment, the transmit power can be controlled in view of an absolute power spectral density parameter.

摘要翻译： 提供了一种用于控制无线网络中的功率的方法。 该方法包括确定诸如移动无线终端的无线设备处的相对功率参数，并且在无线设备处接收负载参数，其中负载参数与至少一个其它无线小区相关联。 该方法包括根据相对功率参数和负载参数调整无线设备的发射功率。 在另一实施例中，可以根据绝对功率谱密度参数来控制发射功率。

公开(公告)号：US20060159160A1

公开(公告)日：2006-07-20

申请号：US11284601

申请日：2005-11-21

申请人： Byoung-Hoon Kim ,  Manuel Flury ,  Xiaoxia Zhang

发明人： Byoung-Hoon Kim ,  Manuel Flury ,  Xiaoxia Zhang

IPC分类号： H04B1/707

CPC分类号： H04B7/0891 ,  H04B7/02 ,  H04J13/00 ,  H04L2025/03426

摘要： Aspects of the invention provide an enhanced chip-level linear space-time equalizer 118 for multiple-input-multiple-output (MIMO) multi-code CDMA systems reusing same spreading codes in different transmit antennas 114. Reuse of the spreading codes at the transmitter 104, 204 creates an on-time inter-stream interference component (or cross-talk among distinct transmit antenna signals) which reuse the same spreading code as the desired signal in the soft metric sequence of the MIMO CDMA receiver after MMSE space-time equalization. The equalizer 118 has a MMSE weighting vector that takes the despreading effect into account.

摘要翻译： 本发明的方面提供了一种用于在不同发射天线114中重复使用相同扩展码的多输入多输出（MIMO）多码CDMA系统的增强的芯片级线性时空均衡器118。 在发射机104,204上重新使用扩频码产生在MIMO的软测量序列中重用与期望信号相同的扩展码的导通时间间干扰分量（或不同发射天线信号之间的串扰） CDMA接收机在MMSE空时均衡后。 均衡器118具有考虑解扩效应的MMSE加权向量。

公开(公告)号：US08665799B2

公开(公告)日：2014-03-04

申请号：US11853704

申请日：2007-09-11

申请人： Durga Prasad Malladi ,  Juan Montojo ,  Junyi Li ,  Byoung-Hoon Kim

发明人： Durga Prasad Malladi ,  Juan Montojo ,  Junyi Li ,  Byoung-Hoon Kim

IPC分类号： H04W4/00 ,  H04W72/00

CPC分类号： H04W56/001 ,  H04B1/713 ,  H04J11/0069 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0064 ,  H04L27/2656 ,  H04W48/12 ,  H04W48/16

摘要： Techniques for transmitting synchronization signals to assist user equipments (UEs) perform cell searches are described. In one design, a base station for a cell may generate and transmit a primary synchronization signal and a secondary synchronization signal, which may be used by the UEs for initial cell search at power up. The base station may also generate and transmit one or more beacon signals, which may be used by the UEs for neighbor cell search to detect for neighbor cells. The number of beacon signals to transmit and the set of subcarriers usable for each beacon signal may be determined based on the system bandwidth. Each beacon signal may be mapped to one subcarrier in the set of subcarriers in each beacon symbol period. This one subcarrier may be determined based on a beacon hopping pattern or a beacon code and may be dependent on a cell identifier (ID).

摘要翻译： 描述用于发送同步信号以辅助用户设备（UE）执行小区搜索的技术。 在一种设计中，用于小区的基站可以生成并发送主同步信号和辅同步信号，UE可以在加电时用于初始小区搜索。 基站还可以生成和发送一个或多个信标信号，其可以由UE用于相邻小区搜索以检测相邻小区。 可以基于系统带宽来确定要发送的信标信号的数量和可用于每个信标信号的子载波的集合。 每个信标信号可以被映射到每个信标符号周期中的子载波集合中的一个子载波。 可以基于信标跳变模式或信标代码来确定该一个子载波，并且可以依赖于小区标识符（ID）。

公开(公告)号：US08565184B2

公开(公告)日：2013-10-22

申请号：US13202537

申请日：2010-02-19

申请人： Han-Byul Seo ,  Byoung-Hoon Kim

发明人： Han-Byul Seo ,  Byoung-Hoon Kim

IPC分类号： H04B7/14 ,  H04B7/208 ,  H04J1/10 ,  H04J4/00 ,  H04W4/00 ,  H04Q11/02

CPC分类号： H04W72/04 ,  H04B7/15557 ,  H04L5/0044 ,  H04L5/0048

摘要： The present invention relates to a method and to an apparatus for transmitting/receiving data in a relay communication system. The method comprises the steps of: setting, as a guard band, the first predetermined number of symbol transmission slots of a data transmission period in a subframe resource element of a downlink channel constituted by a control signal transmission period to which a control signal is allocated and the data transmission period to which downlink data is allocated; allocating reference signals to symbols of the data transmission period; puncturing the symbols corresponding to the guard band from among the symbols to which said reference signals are allocated; and transmitting signals to which said reference signals are allocated.

摘要翻译： 本发明涉及在中继通信系统中发送/接收数据的方法和装置。 该方法包括以下步骤：将由控制信号分配到的控制信号发送周期构成的下行链路信道的子帧资源元素中的数据发送周期的第一预定数量的符号发送时隙 和分配下行链路数据的数据传输周期; 将参考信号分配给数据传输周期的符号; 从分配了所述参考信号的符号中删除与保护频带对应的符号; 以及发送分配了所述参考信号的信号。

公开(公告)号：US08514766B2

公开(公告)日：2013-08-20

申请号：US12920584

申请日：2009-11-25

申请人： Hanbyul Seo ,  Byoung-Hoon Kim

发明人： Hanbyul Seo ,  Byoung-Hoon Kim

IPC分类号： H04B7/14

CPC分类号： H04B7/15542 ,  H04L1/1812 ,  H04L1/1854 ,  H04L1/1887 ,  H04L1/1893 ,  H04L2001/0097 ,  H04W24/02

摘要： A method for performing a hybrid automatic repeat request (HARQ) by a relay station (RS) in a wireless communication system is provided. The method comprises performing HARQ with a mobile station (MS) by a fixed HARQ period; and performing HARQ with a base station (BS) by a HARQ period series, wherein the HARQ period series comprises a plurality of HARQ period series element (Xk,yk), where (Xk,yk) indicates that when data is transmitted in n-th subframe, an ACK/NACK signal is received in (n+xk)-th subframe and the data is retransmitted in (n+xk+yk)-th subframe when the ACK/NACK signal is a NACK signal, wherein at least one of xk and yk for one HARQ period in the HARQ period series is different from at least one of xk and yk for the other HARQ period in the HARQ period series.

摘要翻译： 提供了一种用于在无线通信系统中由中继站（RS）执行混合自动重传请求（HARQ）的方法。 该方法包括：通过固定的HARQ周期与移动站（MS）进行HARQ; 并且通过HARQ周期序列与基站（BS）进行HARQ，其中，所述HARQ周期序列包括多个HARQ周期序列元素（Xk，yk），其中，（Xk，yk）表示当数据以n- 在第（n + xk）个子帧中接收到ACK / NACK信号，并且当ACK / NACK信号是NACK信号时，在（n + xk + yk）子帧中重发数据，其中至少一个 在HARQ周期序列中的一个HARQ周期的xk和yk的xk和yk与HARQ周期序列中的其他HARQ周期的xk和yk中的至少一个不同。

公开(公告)号：US08300582B2

公开(公告)日：2012-10-30

申请号：US12439727

申请日：2007-10-02

申请人： Durga Prasad Malladi ,  Byoung-Hoon Kim

发明人： Durga Prasad Malladi ,  Byoung-Hoon Kim

IPC分类号： H04W4/00

CPC分类号： H04L1/1671 ,  H04L1/1664 ,  H04L5/023

摘要： Techniques for transmitting acknowledgement (ACK) information in a wireless communication system are described. The system supports data transmission to multiple user equipments (UEs) on the same downlink resources with spatial division multiple access (SDMA). A base station sends a data transmission with multiple (M) layers to M UEs. The downlink resources used for the data transmission are associated with ACK resources used to send ACK information for the data transmission. The ACK resources may be partitioned into M portions, e.g., based on frequency division multiplexing (FDM). Each of the M layers is associated with a respective portion of the ACK resources. A recipient UE for each layer sends ACK for that layer on the associated portion of the ACK resources. For each ACK resource portion, one or more pilot symbols may be sent on one or more resource elements, and ACK symbols may be sent on remaining resource elements.

摘要翻译： 描述用于在无线通信系统中发送确认（ACK）信息的技术。 该系统支持使用空分多址（SDMA）在相同下行链路资源上向多个用户设备（UE）传输数据。 基站向M个UE发送具有多个（M）层的数据传输。 用于数据传输的下行链路资源与用于发送用于数据传输的ACK信息的ACK资源相关联。 ACK资源可以被划分为M个部分，例如基于频分复用（FDM）。 每个M层与ACK资源的相应部分相关联。 每个层的接收者UE在ACK资源的相关部分上为该层发送ACK。 对于每个ACK资源部分，可以在一个或多个资源元素上发送一个或多个导频符号，并且可以在剩余的资源元素上发送ACK符号。

公开(公告)号：US08265209B2

公开(公告)日：2012-09-11

申请号：US11553296

申请日：2006-10-26

申请人： Byoung-Hoon Kim

发明人： Byoung-Hoon Kim

IPC分类号： H03D1/04

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。

公开(公告)号：US20120190374A1

公开(公告)日：2012-07-26

申请号：US13381640

申请日：2009-06-30

申请人： Jun-Ho Jo ,  Seo-Woo Jang ,  Jae-Won Lim ,  Byoung-Hoon Kim

发明人： Jun-Ho Jo ,  Seo-Woo Jang ,  Jae-Won Lim ,  Byoung-Hoon Kim

IPC分类号： H04W72/04 ,  H04W24/00

CPC分类号： H04W72/085 ,  H04W84/045

摘要： A method for managing radio resource of a femto cell includes: providing, by the femto cell, a service to one or more UEs by using most of pre-set radio resource; receiving measurement results from the one or more UEs; determining whether or not one or more neighbor femto cells are closely located nearby based on the measurement results; and if it is determined that neighbor femto cells are closely located nearby, reducing the pre-set radio resource into a small radio resource and providing a service with the small radio resource.

摘要翻译： 一种用于管理毫微微小区的无线电资源的方法包括：通过使用大多数预设无线电资源，由毫微微小区向一个或多个UE提供服务; 从所述一个或多个UE接收测量结果; 基于所述测量结果确定一个或多个相邻毫微微小区是否位于附近; 并且如果确定相邻毫微微小区位于附近，则将预置无线电资源减少为小型无线电资源并向小型无线电资源提供服务。