公开(公告)号：US20130044697A1

公开(公告)日：2013-02-21

申请号：US13364891

申请日：2012-02-02

申请人： Taesang Yoo ,  Hendrik Schoeneich ,  Myriam Rajih ,  Tao Luo ,  Siddhartha Mallik

发明人： Taesang Yoo ,  Hendrik Schoeneich ,  Myriam Rajih ,  Tao Luo ,  Siddhartha Mallik

IPC分类号： H04B15/00 ,  H04W52/04 ,  H04W72/08

CPC分类号： H04W72/082 ,  H04L1/0003 ,  H04L1/0606

摘要： Communications by base stations in wireless communication networks may be coordinated in a manner to improve performance by mobile devices experiencing interference from non-serving base stations. In particular, base station communications may be coordinated to improve the performance of interference cancellation by mobile devices. If a user equipment (UE) experiencing interference is capable of interference cancellation, then the base stations may coordinate to increase interference to that user equipment so as to improve that UE's ability to perform interference cancellation. Base stations may also coordinate to reduce interference for a UE, regardless of the UE's ability to perform interference cancellation. Mobile device performance improvements may also be achieved by coordinating scheduling of resources by the non-serving base stations, by using communication formats compatible with interference cancellation, by spatial coordination.

摘要翻译： 无线通信网络中的基站的通信可以以改善经历来自非服务基站的干扰的移动设备的性能的方式进行协调。 特别地，可以协调基站通信以改善移动设备的干扰消除的性能。 如果遇到干扰的用户设备（UE）能够进行干扰消除，则基站可以进行协调，以增加对该用户设备的干扰，从而提高UE执行干扰消除的能力。 无论UE是否执行干扰消除的能力，基站还可以协调以减少对UE的干扰。 还可以通过使用通过空间协调使用与干扰消除相兼容的通信格式来协调非服务基站的资源调度来实现移动设备性能改进。

公开(公告)号：US20120224499A1

公开(公告)日：2012-09-06

申请号：US13195711

申请日：2011-08-01

申请人： Taesang Yoo ,  Tao Luo

发明人： Taesang Yoo ,  Tao Luo

IPC分类号： H04L25/08 ,  H04W72/02

CPC分类号： H04L25/0204 ,  H04J11/005 ,  H04L25/0224 ,  H04W52/02 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146

摘要： Various aspects disclosed are directed to improvements to channel estimation through more efficient cancelation of neighboring common reference signals (CRS). Cancelation of CRS from other cells allows the user equipment (UE) a better opportunity for accurately detecting the reference signal of the current cell. Alternative aspects have a recursive element that uses previous estimates as the basis for the current channel estimate. The various aspects of the present disclosure generally have two alternative embodiments: (1) initializing the channel estimation for all cells with a previous channel estimate and cancellation of reference signals of non-target cells to accurately update channel estimate of the target cell; and (2) initializing the channel estimate for all cells with a previous channel estimate and cancelation of reference signals of all cells to accurately estimate residual channel estimate of the target cell and update its channel estimate.

摘要翻译： 所公开的各个方面旨在通过更有效地消除相邻公共参考信号（CRS）来改进信道估计。 从其他小区中取消CRS允许用户设备（UE）更准确地检测当前小区的参考信号。 替代方面具有使用先前估计作为当前信道估计的基础的递归因子。 本公开的各个方面通常具有两个替代实施例：（1）利用先前的信道估计和非目标小区的参考信号的消除来初始化所有小区的信道估计，以准确地更新目标小区的信道估计; 和（2）利用先前的信道估计和所有小区的参考信号的消除来初始化所有小区的信道估计，以精确估计目标小区的剩余信道估计并更新其信道估计。

公开(公告)号：US08094760B2

公开(公告)日：2012-01-10

申请号：US12191427

申请日：2008-08-14

申请人： Taesang Yoo ,  Yongbin Wei ,  Peter Gaal

发明人： Taesang Yoo ,  Yongbin Wei ,  Peter Gaal

IPC分类号： H04B1/10

CPC分类号： H04L25/0204 ,  H04L25/022 ,  H04L25/0224 ,  H04L27/2647 ,  H04L2025/03414 ,  H04L2025/03522

摘要： Aspects describe channel estimation in an OFDM system. Baseline DFT-based channel estimation can be performed and scaling can be applied to mitigate distortion in the DFT-based estimations. In some aspects, baseline DFT-based channel estimation can be performed and tones for which DFT-based estimate is deemed unreliable can have MMSE based processing applied locally. If orthogonal sequence is deemed excessive, orthogonal sequence cancellation can be applied prior to the MMSE based processing.

摘要翻译： 方面描述OFDM系统中的信道估计。 可以执行基于基于DFT的信道估计，并且可以应用缩放来减轻基于DFT的估计中的失真。 在一些方面，可以执行基于基于DFT的信道估计，并且基于DFT的估计被认为不可靠的音调可以在本地应用基于MMSE的处理。 如果认为正交序列过大，则可以在基于MMSE的处理之前应用正交序列消除。

公开(公告)号：US20110235601A1

公开(公告)日：2011-09-29

申请号：US13071145

申请日：2011-03-24

申请人： Taesang Yoo ,  Tao Luo ,  Yongbin Wei ,  Durga Prasad Malladi

发明人： Taesang Yoo ,  Tao Luo ,  Yongbin Wei ,  Durga Prasad Malladi

IPC分类号： H04W72/04

CPC分类号： H04L5/0053 ,  H04L5/0073 ,  H04W72/082

摘要： According to certain aspects, resource blocks used for physical downlink shared channel (PDSCH) transmissions may be allocated in a manner to manage interference in neighboring cells. According to certain aspects, one or more guard RBs may be utilized when transmitting PDSCH in a first cell an effort to reduce interference by transmissions in a second cell.

摘要翻译： 根据某些方面，可以以管理相邻小区中的干扰的方式来分配用于物理下行链路共享信道（PDSCH）传输的资源块。 根据某些方面，当在第一小区中发送PDSCH时，可以利用一个或多个保护RB来努力减少第二小区中的传输的干扰。

公开(公告)号：US20110205982A1

公开(公告)日：2011-08-25

申请号：US12860747

申请日：2010-08-20

申请人： Taesang Yoo ,  Tao Luo ,  Kibeom Seong

发明人： Taesang Yoo ,  Tao Luo ,  Kibeom Seong

IPC分类号： H04W72/04

CPC分类号： H04L5/0058 ,  H04L1/0038 ,  H04L1/0039 ,  H04W48/12

摘要： Aspects are disclosed for detecting a system information block (SIB) within a heterogeneous network. In one aspect, a type of scheduling information pertaining to an SIB is selected, and a parameter known to a wireless terminal is associated with the type of scheduling information. The wireless terminal then decodes the SIB by deriving the scheduling information from the known parameters, without having to decode a Physical Downlink Control Channel.

摘要翻译： 公开了用于检测异构网络内的系统信息块（SIB）的方面。 一方面，选择与SIB有关的调度信息的种类，将无线终端所知的参数与调度信息的种类相关联。 无线终端然后通过从已知参数导出调度信息来对SIB进行解码，而不必解码物理下行链路控制信道。

公开(公告)号：US20110194430A1

公开(公告)日：2011-08-11

申请号：US12968674

申请日：2010-12-15

申请人： Taesang Yoo ,  Tao Luo ,  Yongbin Wei ,  Hanfang Pan ,  Michael A. Howard

发明人： Taesang Yoo ,  Tao Luo ,  Yongbin Wei ,  Hanfang Pan ,  Michael A. Howard

IPC分类号： H04W24/00

CPC分类号： H04L25/0224 ,  H04L5/0007

摘要： Certain aspects of the disclosure propose a unified channel estimation algorithm that combines two or more channel estimation algorithms in a single piece of hardware or software. The proposed unified channel estimation may dynamically switch, based on one or more metrics, between different modes of operation that utilize different channel estimation algorithms.

摘要翻译： 本公开的某些方面提出了将单个硬件或软件中的两个或多个信道估计算法组合的统一信道估计算法。 所提出的统一信道估计可以基于利用不同信道估计算法的不同操作模式之间的一个或多个度量动态地切换。

公开(公告)号：US20110026645A1

公开(公告)日：2011-02-03

申请号：US12845649

申请日：2010-07-28

申请人： Tao Luo ,  Taesang Yoo ,  Kibeom Seong

发明人： Tao Luo ,  Taesang Yoo ,  Kibeom Seong

IPC分类号： H04B17/00 ,  H04L27/06

CPC分类号： H04L1/0038 ,  H04W48/16

摘要： Techniques for reliable channel decoding in a wireless network are provided. In one aspect, a wireless device receives system information over a physical broadcast channel of a downlink transmission. The wireless device decodes the physical broadcast channel of a current radio frame using a plurality of hypotheses until the decoding passes a cyclic redundancy check. Thereafter, the wireless device compares system information from the current radio frame with information obtained from a previous radio frame. The information from the previous radio frame may include one or more network parameters which may be stored in a memory of the wireless device. In some aspects, the comparison may be performed over a plurality of radio frames. Based at least in part on a result of the comparing, the wireless device may selectively reject system information from one or more of the radio frames.

摘要翻译： 提供了一种在无线网络中进行可靠信道解码的技术。 在一个方面，无线设备通过下行链路传输的物理广播信道接收系统信息。 无线设备使用多个假设来解码当前无线电帧的物理广播信道，直到解码通过循环冗余校验。 此后，无线设备将来自当前无线电帧的系统信息与从先前无线电帧获得的信息进行比较。 来自先前无线电帧的信息可以包括可以存储在无线设备的存储器中的一个或多个网络参数。 在一些方面，可以在多个无线电帧上执行比较。 至少部分地基于比较的结果，无线设备可以选择性地从一个或多个无线电帧中拒绝系统信息。

公开(公告)号：US09350475B2

公开(公告)日：2016-05-24

申请号：US13190308

申请日：2011-07-25

申请人： Taesang Yoo ,  Tao Luo ,  Tingfang Ji

发明人： Taesang Yoo ,  Tao Luo ,  Tingfang Ji

IPC分类号： H04W72/00 ,  H04J11/00 ,  H04B15/00 ,  H04L25/03

CPC分类号： H04J11/005 ,  H04B15/00 ,  H04L25/03891

摘要： A method of wireless communication includes receiving physical layer signaling from a serving eNodeB in a wireless network. Interference estimation, interference cancellation and/or spatial equalization of user equipment is controlled in accordance with the received signaling.

摘要翻译： 无线通信的方法包括从无线网络中的服务eNodeB接收物理层信令。 根据接收的信令控制用户设备的干扰估计，干扰消除和/或空间均衡。

公开(公告)号：US08655282B2

公开(公告)日：2014-02-18

申请号：US13280142

申请日：2011-10-24

申请人： Xiliang Luo ,  Taesang Yoo ,  Tao Luo

发明人： Xiliang Luo ,  Taesang Yoo ,  Tao Luo

IPC分类号： H04W24/00

CPC分类号： H04L27/2691 ,  H04L5/0007 ,  H04L27/2657 ,  H04L27/2662

摘要： A frontend receiver of a user equipment (UE) is configured with multiple transform operations assigned to separate sets of cells. One set of cells includes the serving cell of the UE and at least one additional cell within a first offset range of the serving cell. Another set or sets of cells include additional interferer cells within another offset range of the serving cell. After tracking the common frequency/timing offsets of each set of cells the assigned transform operation for that set transforms the time domain samples into frequency domain symbols. The individual frequency/timing offsets for each cell within the set are then tracked.

摘要翻译： 用户设备（UE）的前端接收器被配置为分配给单独的单元组的多个变换操作。 一组小区包括UE的服务小区和服务小区的第一偏移范围内的至少一个附加小区。 另一组或多组单元包括在服务小区的另一偏移范围内的附加干扰信元。 在跟踪每组单元的公共频率/定时偏移之后，该组的分配变换操作将时域采样转换成频域符号。 然后跟踪集合内的每个单元的各个频率/定时偏移量。

公开(公告)号：US20120243484A1

公开(公告)日：2012-09-27

申请号：US13237469

申请日：2011-09-20

申请人： Siddhartha Mallik ,  Taesang Yoo ,  Tao Luo

发明人： Siddhartha Mallik ,  Taesang Yoo ,  Tao Luo

IPC分类号： H04W72/06

CPC分类号： H04L25/0224

摘要： Channel estimation is performed in a wireless network through cell/antenna pair ranking and iterative soft cancellation of pilot signals. Cell classification and ordering may be ranked and grouped for purposes of improving performance by dedicating hardware resources to higher priority received signals. A metric may be computed to rank the pairs. One such metric is reference signal (RS) power. Pairs may also be grouped into groups of pairs. Groups may be ordered by time-frequency resource and designated as serving-cell groups or non-serving cell groups. Higher priority pairs may be assigned a higher number of iterations. Higher priority groups may be processed first. Pairs which fall below a certain power threshold may be assigned no iterations. Iterations are distributed among hardware blocks to improve processing efficiency. Iteration numbers and hardware assignments may be modified to reach a desired complexity constraint.

摘要翻译： 通过小区/天线对排序和导频信号的迭代软消除在无线网络中执行信道估计。 为了通过将硬件资源专用于较高优先级的接收信号来提高性能，可以对信元分类和排序进行排序和分组。 可以计算度量来对对进行排序。 一个这样的度量是参考信号（RS）功率。 对也可以分组成对。 组可以按时间频率资源排序并指定为服务小区组或非服务小区组。 较高优先级对可以分配更多的迭代次数。 优先级较高的组可以先处理。 低于一定功率阈值的对可以不被分配。 迭代分布在硬件块之间，以提高处理效率。 可以修改迭代数和硬件分配以达到期望的复杂度约束。