公开(公告)号：US20110143672A1

公开(公告)日：2011-06-16

申请号：US12966185

申请日：2010-12-13

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： H04B15/00

CPC分类号： H04J11/004 ,  H04L25/0206 ,  H04L25/0224 ,  H04L2025/03426

摘要： Certain aspects of the disclosure propose parallel channel estimation and interference cancellation in a wireless communications system. For each common reference signal tone offset, interference cancellation and channel estimation may be performed independently. The proposed channel estimation method may increase performance of a system.

摘要翻译： 本公开的某些方面在无线通信系统中提出并行信道估计和干扰消除。 对于每个公共参考信号色调偏移，可以独立地执行干扰消除和信道估计。 所提出的信道估计方法可以提高系统的性能。

公开(公告)号：US20110116561A1

公开(公告)日：2011-05-19

申请号：US12620866

申请日：2009-11-18

申请人： Taesang Yoo ,  Peter Gaal ,  Tao Luo

发明人： Taesang Yoo ,  Peter Gaal ,  Tao Luo

IPC分类号： H04L27/28

CPC分类号： H04L27/2673 ,  H04L27/2665

摘要： Providing for improved tracking and correction of timing in wireless communications is disclosed herein. By way of example, a first algorithm can be employed to track timing of a wireless signal, based on one dimension of the signal. Additionally, a second algorithm based on a different dimension of the signal can be employed to verify the timing and reduce errors in timing analysis. Various signal dimensions can be employed for the analysis, including cyclic prefix, frequency, channel impulse response, or the like, or a combination thereof. Additionally, different channels of the wireless signal can also be analyzed by the first algorithm and the second algorithm. Furthermore, the second algorithm can be selected to reduce deficiencies identified in the first algorithm, to improve overall timing analysis, reduce undetected timing errors or false errors, and improve timing correction.

摘要翻译： 本文公开了提供无线通信中的改进的定时跟踪和校正。 作为示例，可以采用第一算法来基于信号的一个维度来跟踪无线信号的定时。 另外，可以采用基于信号的不同维度的第二算法来验证定时并减少定时分析中的误差。 可以采用各种信号尺寸进行分析，包括循环前缀，频率，信道脉冲响应等，或其组合。 此外，无线信号的不同信道也可以通过第一算法和第二算法进行分析。 此外，可以选择第二算法以减少在第一算法中识别的缺陷，以改善总体时序分析，减少未检测到的定时误差或错误误差，并且改善定时校正。

公开(公告)号：US20110092231A1

公开(公告)日：2011-04-21

申请号：US12900285

申请日：2010-10-07

申请人： Taesang Yoo ,  Tao Luo

发明人： Taesang Yoo ,  Tao Luo

IPC分类号： H04B15/00

CPC分类号： H04L5/0032 ,  H04B1/7097 ,  H04B15/00 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04J11/005 ,  H04J11/0069 ,  H04L5/0048 ,  H04L27/2657 ,  H04L27/2662 ,  H04W24/02 ,  H04W72/082

摘要： Obtaining a timing reference in wireless communication is facilitated when desiring to communicate with a weak serving base station (such as an evolved NodeB) in the presence of a stronger interfering base station. The user equipment (UE) may track a stronger interfering base station's timing, or the UE may track a timing that is derived by a composite power delay profile (PDP) from multiple base stations. The composite PDP may be constructed by adjusting individual base station PDPs according to a weighting scheme. The timing obtained in such a manner may be used for estimation of the channel of the interfering base station and cancelling interfering signals from the base station. It may also be used to estimate the channel of the serving base station after adding a backoff. The UE may track a stronger interfering base station's frequency, or the UE may track a composite frequency.

摘要翻译： 当在较强的干扰基站的存在下希望与弱服务基站（诸如演进的节点B）进行通信时，便于获得无线通信中的定时参考。 用户设备（UE）可以跟踪更强的干扰基站的定时，或者UE可以跟踪由多个基站由复合功率延迟分布（PDP）导出的定时。 可以通过根据加权方案调整各个基站PDP来构成复合PDP。 以这种方式获得的定时可以用于干扰基站的信道的估计和从基站的抵消干扰信号。 也可以用于在添加退避后估计服务基站的信道。 UE可以跟踪更强的干扰基站的频率，或者UE可以跟踪复合频率。

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：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。

公开(公告)号：US20110317624A1

公开(公告)日：2011-12-29

申请号：US13166436

申请日：2011-06-22

申请人： Tao Luo ,  Juan Montojo ,  Taesang Yoo

发明人： Tao Luo ,  Juan Montojo ,  Taesang Yoo

IPC分类号： H04W4/00

CPC分类号： H04W72/14 ,  H04W16/10 ,  H04W24/00 ,  H04W72/0446

摘要： When there are different power classes of base stations (BSs), there may be a need to coordinate transmission from the different BSs to reduce interference to a user equipment (UE) on both control channels and data channels. There are different ways of coordination. For some embodiments, time division multiplex (TDM) resource partitioning may be performed across BSs on a subframe level. TDM resource partitioning may avoid control channel interference since resource mapping on time and frequency for control channels may span the whole frequency domain. However, the data rate for the UE may be limited due to the TDM partitioning of subframes. In other words, a limitation may derive from control channel interference coordination. For some embodiments, a UE may transmit and/or receive in subframes other than the ones partitioned for the UE.

摘要翻译： 当存在基站（BS）的不同功率等级时，可能需要协调来自不同BS的传输，以减少对控制信道和数据信道上的用户设备（UE）的干扰。 有不同的协调方式。 对于一些实施例，可以在子帧级别上跨越BS执行时分复用（TDM）资源划分。 TDM资源分配可以避免控制信道干扰，因为控制信道的时间和频率上的资源映射可能跨越整个频域。 然而，由于子帧的TDM划分，UE的数据速率可能受到限制。 换句话说，限制可以来自控制信道干扰协调。 对于一些实施例，UE可以在除了为UE分配的子帧之外的子帧中发送和/或接收。

公开(公告)号：US20110275394A1

公开(公告)日：2011-11-10

申请号：US13085373

申请日：2011-04-12

申请人： Osok Song ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Taesang Yoo ,  Parag Arun Agashe ,  Madhavan Srinivasan Vajapeyam ,  Yongbin Wei ,  Tao Luo ,  Rajat Prakash ,  Masato Kitazoe

发明人： Osok Song ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Taesang Yoo ,  Parag Arun Agashe ,  Madhavan Srinivasan Vajapeyam ,  Yongbin Wei ,  Tao Luo ,  Rajat Prakash ,  Masato Kitazoe

IPC分类号： H04W72/04

CPC分类号： H04W72/082 ,  H04W72/08

摘要： Methods and apparatus for partitioning resources for enhanced inter-cell interference coordination (eICIC) are provided. Certain aspects involve broadcasting a message indicating time-domain resource partitioning information (RPI), where a user equipment (UE) may be operating in idle mode. With the RPI, the UE may be able to identify protected resources with reduced/eliminated interference from neighboring cells. The RPI in this broadcasted message may be encoded as a bitmap as an alternative or in addition to enumeration of the U/N/X subframes. Other aspects entail transmitting a dedicated or unicast message indicating the time-domain RPI, where a UE may be operating in connected mode. With the RPI, the UE may be able to determine channel state information (CSI), make radio resource management (RRM) measurements, or perform radio link monitoring (RLM), based on one or more signals from a serving base station during the protected time-domain resources.

摘要翻译： 提供了用于分区资源以增强小区间干扰协调（eICIC）的方法和装置。 某些方面涉及广播指示时域资源划分信息（RPI）的消息，其中用户设备（UE）可以在空闲模式下操作。 利用RPI，UE可能能够识别来自相邻小区的减少/消除的干扰的受保护资源。 该广播消息中的RPI可以被编码为位图，作为U / N / X子帧的枚举的替代或补充。 其他方面需要发送指示时域RPI的专用或单播消息，其中UE可以在连接模式下操作。 利用RPI，UE可以在受保护的基站期间基于来自服务基站的一个或多个信号来确定信道状态信息（CSI），进行无线电资源管理（RRM）测量或执行无线电链路监视（RLM） 时域资源。

公开(公告)号：US20110250919A1

公开(公告)日：2011-10-13

申请号：US13084154

申请日：2011-04-11

申请人： Alan Barbieri ,  Tingfang Ji ,  Parag Arun Agashe ,  Yongbin Wei ,  Taesang Yoo ,  Tao Luo ,  Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Aleksandar Damnjanovic

发明人： Alan Barbieri ,  Tingfang Ji ,  Parag Arun Agashe ,  Yongbin Wei ,  Taesang Yoo ,  Tao Luo ,  Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Aleksandar Damnjanovic

IPC分类号： H04B7/26

CPC分类号： H04L5/0057 ,  H04L1/0026 ,  H04L1/0028 ,  H04W24/00 ,  H04W24/08 ,  H04W28/16 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/23

摘要： Techniques for estimating and reporting channel quality indicator (CQI) are disclosed. Neighboring base stations may cause strong interference to one another and may be allocated different resources, e.g., different subframes. A UE may observe different levels of interference on different resources. In an aspect, the UE may determine a CQI for resources allocated to a base station and having reduced or no interference from at least one interfering base station. In another aspect, the UE may determine multiple CQI for resources of different types and associated with different interference levels. For example, the UE may determine a first CQI based on at least one first subframe allocated to the base station and having reduced or no interference from the interfering base station(s). The UE may determine a second CQI based on at least one second subframe allocated to the interfering base station(s).

摘要翻译： 公开了用于估计和报告信道质量指示符（CQI）的技术。 相邻的基站可能导致彼此的强干扰，并且可以分配不同的资源，例如不同的子帧。 UE可以在不同的资源上观察不同级别的干扰。 在一方面，UE可以为分配给基站并且具有来自至少一个干扰基站的减少或没有干扰的资源确定CQI。 在另一方面，UE可以为不同类型的资源确定多个CQI并且与不同的干扰电平相关联。 例如，UE可以基于分配给基站的至少一个第一子帧并且具有来自干扰基站的减少或没有干扰来确定第一CQI。 UE可以基于分配给干扰基站的至少一个第二子帧来确定第二CQI。

公开(公告)号：US20110188462A1

公开(公告)日：2011-08-04

申请号：US13016837

申请日：2011-01-28

申请人： Taesang Yoo ,  Siddhartha Mallik ,  Tao Luo

发明人： Taesang Yoo ,  Siddhartha Mallik ,  Tao Luo

IPC分类号： H04W4/00 ,  H04W72/04

CPC分类号： H04L1/0023 ,  H04L1/0039 ,  H04L1/0061 ,  H04L1/1829

摘要： Certain aspects of the present disclosure provide for signaling to expanded capability UEs that may limit the interruption of legacy UEs. According to certain aspects, a base station (e.g., an eNB) may generate and transmit one or more signals containing information that is recognizable by at least one expanded capability UE and identified as invalid by at least one legacy UE. An expanded capability UE may receive such signaling and identifying supplemental information in the signaling, while a legacy UE may regard the signaling as invalid.

摘要翻译： 本公开的某些方面提供用于限制传统UE的中断的扩展能力UE的信令。 根据某些方面，基站（例如，eNB）可以生成并发送包含由至少一个扩展能力UE可识别并由至少一个传统UE识别为无效的信息的一个或多个信号。 扩展能力UE可以在信令中接收这样的信令和识别补充信息，而传统UE可以认为信令是无效的。

公开(公告)号：US20110188393A1

公开(公告)日：2011-08-04

申请号：US13015532

申请日：2011-01-27

申请人： Siddhartha Mallik ,  Taesang Yoo ,  Tao Luo

发明人： Siddhartha Mallik ,  Taesang Yoo ,  Tao Luo

IPC分类号： H04W24/04

CPC分类号： H04B7/024 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/066

摘要： Techniques for reporting channel information are described. In one aspect, a plurality of channel information reporting modes are available to a user equipment (UE) for reporting channel information for coordinated multi-point (CoMP) data transmission. The UE may determine a first channel information reporting mode to use, determine first channel information related to at least one cell in a CoMP measurement set of the UE, and send the first channel information in accordance with the first channel information reporting mode to one or more cells in the CoMP measurement set. The UE may also determine a second channel information reporting mode to use, determine second channel information related to multiple cells in the CoMP measurement set, and send the second channel information in accordance with the second channel information reporting mode. A plurality of channel feedback configurations may be supported, including a single-stage, a two-stage, and/or a one-shot channel configurations.

摘要翻译： 描述用于报告信道信息的技术。 在一个方面，多个信道信息报告模式可用于用于报告协调多点（CoMP）数据传输的信道信息的用户设备（UE）。 UE可以确定要使用的第一信道信息报告模式，确定与UE的CoMP测量集合中的至少一个小区相关的第一信道信息，并且根据第一信道信息报告模式将第一信道信息发送到一个或 CoMP测量集中更多的单元格。 UE还可以确定要使用的第二信道信息报告模式，确定与CoMP测量集中的多个小区有关的第二信道信息，并根据第二信道信息报告模式发送第二信道信息。 可以支持多个信道反馈配置，包括单级，两级和/或单触发信道配置。