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：US09401784B2

公开(公告)日：2016-07-26

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 ,  H04L5/00 ,  H04B1/7097 ,  H04J11/00 ,  H04L27/26 ,  H04W24/02 ,  H04W72/08

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.

公开(公告)号：US09232462B2

公开(公告)日：2016-01-05

申请号：US12904952

申请日：2010-10-14

申请人： Tao Luo ,  Xiaoxia Zhang ,  Kibeom Seong ,  Ke Liu ,  Taesang Yoo

发明人： Tao Luo ,  Xiaoxia Zhang ,  Kibeom Seong ,  Ke Liu ,  Taesang Yoo

IPC分类号： H04W4/00 ,  H04W48/12 ,  H04W72/08 ,  H04W16/14 ,  H04W72/04 ,  H04W72/12 ,  H04W84/04

CPC分类号： H04W48/12 ,  H04W16/14 ,  H04W72/0406 ,  H04W72/0426 ,  H04W72/082 ,  H04W72/1289 ,  H04W84/045

摘要： Methods and apparatus for providing cross-cell signaling and/or coordination for interference mitigation in wireless communication networks are described. In one aspect, a UE associated with a serving eNB may receive control signaling from another non-serving eNB in a different cell. The control signaling may be consistent with a characteristic of the serving eNB and associated cell. In another aspect, multiple eNBs may coordinate transmission of DL resources to minimize collisions of control signaling resources.

摘要翻译： 描述了用于在无线通信网络中提供用于干扰减轻的跨小区信令和/或协调的方法和装置。 在一个方面，与服务eNB相关联的UE可以从不同小区中的另一非服务eNB接收控制信令。 控制信令可以与服务eNB和相关联的小区的特性一致。 在另一方面，多个eNB可协调DL资源的传输以最小化控制信令资源的冲突。

公开(公告)号：US08737187B2

公开(公告)日：2014-05-27

申请号：US13096667

申请日：2011-04-28

申请人： Taesang Yoo ,  Tao Luo ,  Lu Zhao

发明人： Taesang Yoo ,  Tao Luo ,  Lu Zhao

IPC分类号： H04J1/12 ,  H04B7/00 ,  H04J3/00

CPC分类号： H04L5/0062 ,  H04J11/005 ,  H04L5/005 ,  H04L5/0073 ,  H04L25/0204 ,  H04L25/0224 ,  H04W24/10

摘要： A method to enhance coverage and/or throughput in a heterogeneous wireless network includes detecting interference between a neighboring cell and a serving cell. The method also includes cancelling the interference using an adaptive technique based on whether the interference has colliding Common Reference Signal (CRS) tones.

摘要翻译： 增强异构无线网络中的覆盖和/或吞吐量的方法包括检测相邻小区与服务小区之间的干扰。 该方法还包括使用基于干扰是否具有冲突公共参考信号（CRS）音调的自适应技术来消除干扰。

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。