公开(公告)号：US08675560B2

公开(公告)日：2014-03-18

申请号：US13225121

申请日：2011-09-02

申请人： Taesang Yoo ,  Siddhartha Mallik ,  Tao Luo

发明人： Taesang Yoo ,  Siddhartha Mallik ,  Tao Luo

IPC分类号： H04W4/00

CPC分类号： H04W72/082 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/005 ,  H04L5/006 ,  H04L5/0073 ,  H04W16/32 ,  H04W72/0413

摘要： Communication in a dominant interference scenario may be supported by performing inter-cell interference coordination (ICIC). According to certain aspects of ICIC, resource coordination/partitioning may be performed to allocate resources to a serving Node B located near the vicinity of a strong interfering Node B. The interfering Node B may avoid transmitting on the allocated/protected resources, but transmissions from the interfering Node B on resources not allocated to the serving Node B (i.e., unprotected) may cause significant interference on cell-specific reference signal (CRS) tones of the serving Node B. Therefore, if the CRS tones of the unallocated/unprotected resources are used, performance degradation may result to various operations of the serving Node B. Therefore, certain aspects of the present disclosure provide techniques for a UE receiver in utilizing resource partitioning information (RPI) for performing CRS processing in a heterogeneous network (HetNet).

摘要翻译： 可以通过执行小区间干扰协调（ICIC）来支持主要干扰场景中的通信。 根据ICIC的某些方面，可以执行资源协调/划分以向位于强干扰节点B附近的服务节点B分配资源。干扰节点B可以避免在所分配/受保护资源上的传输， 干扰节点B对未分配给服务节点B的资源（即未受保护的）可能对服务节点B的小区特定参考信号（CRS）音调造成显着的干扰。因此，如果未分配/未受保护的资源的CRS音调 性能下降可能导致服务节点B的各种操作。因此，本公开的某些方面在利用用于在异构网络（HetNet）中执行CRS处理的资源划分信息（RPI）的情况下为UE接收机提供技术。

公开(公告)号：US08614981B2

公开(公告)日：2013-12-24

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： H04W4/00 ,  H04W72/04 ,  H04B7/00

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。

公开(公告)号：US08593933B2

公开(公告)日：2013-11-26

申请号：US13094669

申请日：2011-04-26

申请人： Tao Luo ,  Kapil Bhattad ,  Xiaoxia Zhang ,  Taesang Yoo ,  Ke Liu

发明人： Tao Luo ,  Kapil Bhattad ,  Xiaoxia Zhang ,  Taesang Yoo ,  Ke Liu

IPC分类号： H04J9/00

CPC分类号： H04J11/0053 ,  H04B7/0473 ,  H04J11/0033

摘要： In one aspect, a method to enhance coverage in a heterogeneous wireless network wireless communication is disclosed. The method includes generating a reference signal indicating a plurality of transmit antenna ports and generating modulation symbols. Modulation symbols are assigned to each of the plurality of transmit antenna ports, in accordance with a spatial diversity coding scheme for the plurality of transmit antenna ports. At least one of the modulation symbols assigned to at least one of the plurality of transmit antenna ports is muted prior to transmission in accordance with the spatial diversity coding scheme. The non-muted modulation symbols and the reference signal are transmitted on the other of the plurality of transmit antenna ports.

摘要翻译： 一方面，公开了一种在异构无线网络无线通信中增强覆盖的方法。 该方法包括产生指示多个发射天线端口并产生调制符号的参考信号。 根据用于多个发射天线端口的空间分集编码方案，将调制符号分配给多个发射天线端口中的每一个。 根据空间分集编码方案，分配给多个发送天线端口中的至少一个的调制符号中的至少一个在发送之前被静音。 在多个发送天线端口中的另一个发送非静噪调制符号和参考信号。

公开(公告)号：US08582505B2

公开(公告)日：2013-11-12

申请号：US13117033

申请日：2011-05-26

申请人： Tao Luo ,  Ke Liu ,  Kapil Bhattad ,  Taesang Yoo ,  Xiaoxia Zhang

发明人： Tao Luo ,  Ke Liu ,  Kapil Bhattad ,  Taesang Yoo ,  Xiaoxia Zhang

IPC分类号： H04W4/00

CPC分类号： H04J11/0056 ,  H04B1/7107

摘要： A method of wireless communication includes generating a list of cells for physical broadcast channel (PBCH) decoding. The method also includes allocating memory for decoding and cancelling a subset of cells from the generated cell list. The method further includes storing information related to subsets of cells from the generated list in the allocated memory during different time periods. The allocated memory is sufficient for attempting, at each time period, decoding of each subset of cells and cancelling of decoded cells in each subset. The method further includes cycling through the generated cell list by processing each subset of the cell list during the different time periods.

摘要翻译： 一种无线通信方法包括：生成用于物理广播信道（PBCH）解码的小区列表。 该方法还包括分配用于从所生成的小区列表中解码和消除小区子集的存储器。 该方法还包括在不同时间段期间将与生成的列表中的小区子集有关的信息存储在所分配的存储器中。 分配的存储器足以在每个时间段尝试对每个子集的每个子集进行解码并且消除每个子集中的解码单元。 该方法还包括通过在不同时间段内处理单元列表的每个子集来循环通过所生成的单元列表。

公开(公告)号：US20130114438A1

公开(公告)日：2013-05-09

申请号：US13467945

申请日：2012-05-09

申请人： Kapil Bhattad ,  Yi Huang ,  Tao Luo ,  Taesang Yoo

发明人： Kapil Bhattad ,  Yi Huang ,  Tao Luo ,  Taesang Yoo

IPC分类号： H04W24/00 ,  H04W4/00

CPC分类号： H04J11/005

摘要： Aspects of the disclosure are related to identifying whether an apparatus (e.g., base station, access point, etc.) is transmitting using a CRS based transmission scheme or a UE-RS based transmission scheme. Such detection may be necessary for PDSCH interference cancellation (IC) of a neighboring cell since a UE may not know which transmission scheme is used by the neighboring cell. For instance, the UE may know the transmission scheme of the serving cell, but the UE may not know the transmission scheme of a neighboring non-serving cell. As such, aspects of the disclosure provide for a blind detection algorithm to identify or determine a transmission mode or transmission scheme of a neighboring cell to then apply interference cancellation (IC) to an interfering signal received from the neighboring cell.

摘要翻译： 本公开的方面与识别装置（例如，基站，接入点等）是否正在使用基于CRS的传输方案或基于UE-RS的传输方案进行传输有关。 这样的检测对于相邻小区的PDSCH干扰消除（IC）可能是必要的，因为UE可能不知道相邻小区使用哪种传输方案。 例如，UE可以知道服务小区的传输方案，但是UE可能不知道相邻非服务小区的传输方案。 因此，本公开的方面提供盲检测算法来识别或确定相邻小区的传输模式或传输方案，然后将干扰消除（IC）应用于从邻近小区接收的干扰信号。

公开(公告)号：US20110256861A1

公开(公告)日：2011-10-20

申请号：US13084806

申请日：2011-04-12

申请人： Taesang Yoo ,  Tao Luo ,  Xiliang Luo

发明人： Taesang Yoo ,  Tao Luo ,  Xiliang Luo

IPC分类号： H04W24/00

CPC分类号： H04W24/08 ,  H04B17/318 ,  H04B17/327 ,  H04B17/382 ,  H04L5/005 ,  H04L5/0094 ,  H04L25/02 ,  H04W24/00 ,  H04W72/04 ,  H04W72/042

摘要： A method for communicating in an advanced long term evolution (LTE-A) network using common reference signal (CRS) resources associated with different interference levels due to resource partitioning is disclosed. Signals are received from an eNodeB indicating a subset of CRS resources for radio link monitoring (RLM) and/or reference signal received power (RSRP) measuring. The subset of CRS resources includes the CRS resources expected to have lower interference from the interfering eNodeBs. RLM and/or RSRP measurements are performed based on the indicated subset.

摘要翻译： 公开了一种使用由于资源划分引起的与不同干扰电平相关联的共同参考信号（CRS）资源在高级长期演进（LTE-A）网络中进行通信的方法。 从指示用于无线电链路监视（RLM）和/或参考信号接收功率（RSRP）测量的CRS资源的子集的eNodeB接收信号。 CRS资源的子集包括预期来自干扰eNodeB的较低干扰的CRS资源。 基于所指示的子集执行RLM和/或RSRP测量。

公开(公告)号：US09130612B2

公开(公告)日：2015-09-08

申请号：US12349232

申请日：2009-01-06

申请人： Byoung-Hoon Kim ,  Taesang Yoo

发明人： Byoung-Hoon Kim ,  Taesang Yoo

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

CPC分类号： H04B7/0413 ,  H04B7/0619 ,  H04B7/0671

摘要： 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.

摘要翻译： 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：US08849353B2

公开(公告)日：2014-09-30

申请号：US11796328

申请日：2007-04-27

申请人： Gerard J. Foschini ,  Taesang Yoo

发明人： Gerard J. Foschini ,  Taesang Yoo

IPC分类号： H04M1/00 ,  H04B7/04

CPC分类号： H04B7/043 ,  H04B7/0452 ,  H04B7/0465 ,  H04W52/346 ,  H04W72/082

摘要： In a system of MIMO communications in a wireless network, a number of wireless units are logically divided into a plurality of user groups, through operation of a semi-orthogonal user selection sub-system. For example, the user selection sub-system may implement a heuristic user selection algorithm based on near-orthogonality. Each user group is assigned a discrete transmission channel, which may be orthogonally defined in terms of frequency, time, or code. Data is transmitted over the channels (e.g., from network base stations) in a coherently coordinated manner, according to a zero-forcing beamforming operation. The system may be configured for operation in a time/frequency selective manner, e.g., over time/frequency selective fading channels. The wireless units may be allocated to the time/frequency slots based on prioritization of channel strength and considerations of fairness, in conjunction with the application of a semi-orthogonal user selection algorithm.

摘要翻译： 在无线网络中的MIMO通信系统中，通过半正交用户选择子系统的操作，将多个无线单元在逻辑上划分成多个用户组。 例如，用户选择子系统可以实现基于近正交性的启发式用户选择算法。 每个用户组被分配离散的传输信道，其可以根据频率，时间或代码来正交地定义。 根据迫零波束成形操作，以相干协调的方式通过信道（例如，来自网络基站）发送数据。 该系统可以被配置为以时间/频率选择性方式操作，例如，随着时间/频率选择性衰落信道。 结合半正交用户选择算法的应用，无线单元可以基于信道强度的优先级和公平性的考虑来分配给时间/频率时隙。

公开(公告)号：US08509710B2

公开(公告)日：2013-08-13

申请号：US12235466

申请日：2008-09-22

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

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

IPC分类号： H04B1/18

CPC分类号： H04B7/0671 ,  H04B7/0413 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0242 ,  H04L27/2613

摘要： Techniques for transmitting data using a combination of explicit cyclic delay and implicit cyclic delay are described. A transmitter may perform first processing for cyclic delay diversity (or explicit cyclic delay processing) based on a first set of cyclic delay values known to a receiver. The transmitter may perform precoding based on a precoding matrix either before or after the explicit cyclic delay processing. The transmitter may perform second processing for cyclic delay diversity (or implicit cyclic delay processing) based on a second set of cyclic delay values unknown to the receiver. The transmitter may perform both explicit and implicit cyclic delay processing for data and may perform only implicit cyclic delay processing for pilot. One entity may select the first set of cyclic delay values and inform the other entity. The transmitter may autonomously select the second set of cyclic delay values without informing the receiver.

摘要翻译： 描述了使用显式循环延迟和隐式循环延迟的组合来发送数据的技术。 发射机可以基于接收机已知的第一组循环延迟值来执行循环延迟分集（或显式循环延迟处理）的第一处理。 发射机可以在显式循环延迟处理之前或之后基于预编码矩阵执行预编码。 发射机可以基于接收机未知的第二组循环延迟值来执行循环延迟分集（或隐式循环延迟处理）的第二处理。 发射机可以对数据执行显式和隐式循环延迟处理，并且可以仅对导频执行隐式循环延迟处理。 一个实体可以选择第一组循环延迟值并通知另一个实体。 发射机可以自主地选择第二组循环延迟值而不通知接收机。

公开(公告)号：US08594219B2

公开(公告)日：2013-11-26

申请号：US12109068

申请日：2008-04-24

申请人： Byoung-Hoon Kim ,  Taesang Yoo ,  Xiaoxia Zhang

发明人： Byoung-Hoon Kim ,  Taesang Yoo ,  Xiaoxia Zhang

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04B7/0671 ,  H04B7/0434 ,  H04B7/0465 ,  H04B7/0617

摘要： Systems and methodologies are described that facilitate applying cyclic delay diversity (CDD) and precoding to wireless transmissions. In particular, data vectors to be transmitted to a number of receive antennas of a receiver can be transformed to a virtual antenna domain. CDD can be applied to this domain followed by precoding to allow the benefits of precoding to remain though CDD is applied. In this regard, the resulting signals can be transmitted without pouring transmission energy into null spaces unreachable by receiving devices.

摘要翻译： 描述了有助于将循环延迟分集（CDD）和预编码应用于无线传输的系统和方法。 具体地，可以将要发送到接收机的多个接收天线的数据向量变换为虚拟天线域。 可以将CDD应用于该域，然后进行预编码，以允许通过应用CDD来保留预编码的优点。 在这方面，可以传输所得到的信号，而不会将传输能量倾倒到通过接收装置不可达的空间空间中。