公开(公告)号：US20130114438A1

公开(公告)日：2013-05-09

申请号：US13467945

申请日：2012-05-09

Applicant: Kapil Bhattad ,  Yi Huang ,  Tao Luo ,  Taesang Yoo

Inventor： Kapil Bhattad ,  Yi Huang ,  Tao Luo ,  Taesang Yoo

IPC: H04W24/00 ,  H04W4/00

CPC classification number: H04J11/005

Abstract: 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.

Abstract translation: 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：US20120213109A1

公开(公告)日：2012-08-23

申请号：US13401660

申请日：2012-02-21

Applicant: Hao Xu ,  Xiliang Luo ,  Peter Gaal ,  Tingfang Ji ,  Kapil Bhattad

Inventor： Hao Xu ,  Xiliang Luo ,  Peter Gaal ,  Tingfang Ji ,  Kapil Bhattad

IPC: H04W72/04 ,  H04W24/00

CPC classification number: H04W52/40 ,  H04B7/024 ,  H04L5/0048 ,  H04W52/242 ,  H04W52/244 ,  H04W52/50

Abstract: Certain aspects of the present disclosure relate to techniques that may be used to discover transmission points in heterogeneous networks (HetNet) that involves coordinated multi-point (CoMP) transmission and reception.

Abstract translation: 本公开的某些方面涉及可用于发现涉及协调多点（CoMP）传输和接收的异构网络（HetNet）中的传输点的技术。

公开(公告)号：US20120207105A1

公开(公告)日：2012-08-16

申请号：US13349073

申请日：2012-01-12

Applicant: Stefan Geirhofer ,  Tingfang Ji ,  Peter Gaal ,  Aleksandar Damnjanovic ,  Juan Montojo ,  Tao Luo ,  Wanshi Chen ,  Kapil Bhattad

Inventor： Stefan Geirhofer ,  Tingfang Ji ,  Peter Gaal ,  Aleksandar Damnjanovic ,  Juan Montojo ,  Tao Luo ,  Wanshi Chen ,  Kapil Bhattad

IPC: H04W72/08

CPC classification number: H04W36/0077 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0057 ,  H04L5/006 ,  H04L25/0226

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided for separating control transmissions and data transmissions within the coverage area of a plurality of transmission/reception points or points that are geographically displaced, the plurality of points comprising a macro node and a plurality of remote radio heads (RRHs) coupled to the macro node. Separating control transmissions and data transmissions in the macro node/RRH configuration may allow UEs to be associated with one set of transmission points for data transmissions and the same set or a different set of transmission points for common control signaling. Separating control transmissions and data transmissions may also allow for faster reconfiguration of antenna ports used for UE data transmission compared with reconfiguration via a handover process.

Abstract translation: 提供了一种用于无线通信的方法，装置和计算机程序产品，用于分离多个发送/接收点或地理位移的点的覆盖区域内的控制传输和数据传输，所述多个点包括宏节点 以及耦合到所述宏节点的多个远程无线电头（RRH）。 在宏节点/ RRH配置中分离控制传输和数据传输可以允许UE与用于数据传输的一组传输点和用于公共控制信令的相同集合或不同的传输点集合相关联。 与通过切换过程的重新配置相比，分离控制传输和数据传输还可以允许用于UE数据传输的天线端口的更快的重新配置。

公开(公告)号：US20120163159A1

公开(公告)日：2012-06-28

申请号：US13332701

申请日：2011-12-21

Applicant: Xiliang Luo ,  Peter Gaal ,  Wanshi Chen ,  Hao Xu ,  Tao Luo ,  Kapil Bhattad ,  Xiaoxia Zhang

Inventor： Xiliang Luo ,  Peter Gaal ,  Wanshi Chen ,  Hao Xu ,  Tao Luo ,  Kapil Bhattad ,  Xiaoxia Zhang

IPC: H04J1/02

CPC classification number: H04L5/0062 ,  H04L1/1692

Abstract: A method for transmitting an acknowledgement/negative acknowledgement is described. Cell-specific symbol-level cyclic shift hopping is applied to data single-carrier frequency division multiplexing symbols of the acknowledgement/negative acknowledgement. A discrete Fourier transform is applied to the data single-carrier frequency division multiplexing symbols. Cell-specific symbol-level phase hopping is applied to the data single-carrier frequency division multiplexing symbols. The data single-carrier frequency division multiplexing symbols are transmitted in a slot.

Abstract translation: 描述用于发送确认/否定确认的方法。 小区特定符号级循环移位跳频被应用于确认/否定确认的数据单载波频分复用符号。 离散傅里叶变换被应用于数据单载波频分复用符号。 小区特定符号级相位跳变被应用于数据单载波频分复用符号。 数据单载波频分复用符号在时隙中发送。

公开(公告)号：US20120106595A1

公开(公告)日：2012-05-03

申请号：US13100069

申请日：2011-05-03

Applicant: Kapil Bhattad ,  Peter Gaal

Inventor： Kapil Bhattad ,  Peter Gaal

IPC: H04L25/49 ,  H04B1/7097 ,  H04B17/00

CPC classification number: H04B7/0617 ,  H04B7/0421 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/0669 ,  H04B7/0684 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/0057 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/03343 ,  H04L25/03866 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802 ,  H04W52/42

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which a first pre-coding matrix for use on a portion of a set of resource blocks (RBs) is determined. At least one beamforming vector of the set of beamforming vectors is modified by applying a phase rotation to generate a modified pre-coding matrix. The modified pre-coding matrix is applied to one or more demodulation reference signals and data associated with the portion of the set of RBs for transmission using at least one antenna.

Abstract translation: 提供了一种用于无线通信的方法，装置和计算机程序产品，其中确定了在一组资源块（RB）的一部分上使用的第一预编码矩阵。 通过施加相位旋转来生成修改的预编码矩阵来修改波束形成向量集合中的至少一个波束成形向量。 修改的预编码矩阵被应用于一个或多个解调参考信号和与该组RB的部分相关联的数据，以使用至少一个天线进行传输。

公开(公告)号：US20120087401A1

公开(公告)日：2012-04-12

申请号：US13253747

申请日：2011-10-05

Applicant: KAPIL BHATTAD ,  Peter Gaal

Inventor： KAPIL BHATTAD ,  Peter Gaal

IPC: H04L25/49 ,  H04L25/08 ,  H04L27/06 ,  H04B17/00

CPC classification number: H04B7/0486 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0671 ,  H04L5/0023 ,  H04L25/03343 ,  H04L2025/03426

Abstract: A method and apparatus of wireless communication are disclosed. The wireless communication performs pilot signal transmissions using a first precoding matrix for user equipment specific pilot signals, the pilot signal transmissions having a first transmission rank. The wireless communication also performs data transmissions using a second precoding matrix for data when the data transmissions have a second transmission rank less than the first transmission rank, in which the second precoding matrix includes a transformed version of the first precoding matrix. Alternatively, the wireless communication can perform data transmissions using at least two precoding matrices for data when the data transmissions have a second transmission rank less than or equal to the first transmission rank. Accordingly, the precoding matrix used for data is a transformed version of the precoding matrix used for user equipment specific pilot signals.

Abstract translation: 公开了一种无线通信的方法和装置。 无线通信使用用于用户设备专用导频信号的第一预编码矩阵来执行导频信号传输，导频信号传输具有第一传输等级。 当数据传输具有小于第一传输秩的第二传输级时，无线通信还使用用于数据的第二预编码矩阵执行数据传输，其中第二预编码矩阵包括第一预编码矩阵的变换版本。 或者，当数据传输具有小于或等于第一传输等级的第二传输等级时，无线通信可以使用用于数据的至少两个预编码矩阵来执行数据传输。 因此，用于数据的预编码矩阵是用于用户设备专用导频信号的预编码矩阵的变换版本。

公开(公告)号：US20100309876A1

公开(公告)日：2010-12-09

申请号：US12792137

申请日：2010-06-02

Applicant: Aamod Dinkar Khandekar ,  Ravi Palanki ,  Kapil Bhattad

Inventor： Aamod Dinkar Khandekar ,  Ravi Palanki ,  Kapil Bhattad

IPC: H04W72/04 ,  H04J3/00

CPC classification number: H04L5/0037 ,  H04L5/0053 ,  H04L5/0066 ,  H04W72/042 ,  H04W72/0426 ,  H04W72/0446 ,  H04W72/082 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146

Abstract: Techniques for supporting communication in dominant interference scenarios are described. In an aspect, communication in a dominant interference scenario may be supported with time division multiplex (TDM) partitioning of downlink control resources. For TDM partitioning, different base stations may be allocated different time resources. Each base station may send its control information in its allocated time resources and may avoid sending control information (or may send control information at a lower transmit power level) in time resources allocated to other base stations. In another aspect, communication in a dominant interference scenario may be supported with frequency division multiplex (FDM) partitioning of uplink control resources. For FDM partitioning, different base stations may be allocated different frequency resources. In one design, TDM partitioning may be used for downlink control resources, and FDM partitioning may be used for uplink control resources.

Abstract translation: 描述了在主要干扰场景中支持通信的技术。 在一个方面，可以通过下行链路控制资源的时分复用（TDM）划分来支持主要干扰场景中的通信。 对于TDM划分，不同的基站可以被分配不同的时间资源。 每个基站可以在其分配的时间资源中发送其控制信息，并且可以避免在分配给其他基站的时间资源中发送控制信息（或者可以以较低发射功率电平发送控制信息）。 在另一方面，可以通过上行链路控制资源的频分复用（FDM）划分来支持主要干扰场景中的通信。 对于FDM分割，可以为不同的基站分配不同的频率资源。 在一种设计中，TDM划分可以用于下行链路控制资源，并且可以将FDM划分用于上行链路控制资源。

公开(公告)号：US20100234061A1

公开(公告)日：2010-09-16

申请号：US12722433

申请日：2010-03-11

Applicant: Aamod D. Khandekar ,  Ravi Palanki ,  Mohammad J. Borran ,  Kapil Bhattad ,  Xiliang Luo

Inventor： Aamod D. Khandekar ,  Ravi Palanki ,  Mohammad J. Borran ,  Kapil Bhattad ,  Xiliang Luo

IPC: H04B7/00

CPC classification number: H04W52/243 ,  H04W52/146 ,  H04W52/241 ,  H04W52/242 ,  H04W52/54 ,  H04W52/58

Abstract: Methods, systems, apparatus and computer program products are provided to facilitate power control in wireless communication systems. A cell that is experiencing excessive interference conditions may generate an over-the-air overload indicator indicative of interference conditions at the cell. The over-the-air overload indicator is received by one or more user equipment in a neighboring cell. In response, the user equipment determines adjustments to its transmit power that reduce and/or eliminate the interference. This determination may be carried out by the user equipment, by the serving base station, or through cooperation between the user equipment and the serving base station. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims.

Abstract translation: 提供方法，系统，装置和计算机程序产品以便于无线通信系统中的功率控制。 正在经历过多干扰条件的小区可能会产生指示小区干扰情况的空中过载指示器。 空中过载指示符由相邻小区中的一个或多个用户设备接收。 作为响应，用户设备确定减少和/或消除干扰的其发射功率的调整。 该确定可以由用户设备，服务基站或者通过用户设备与服务基站之间的协作进行。 本摘要仅用于遵守允许读者快速确定所披露的主题的抽象要求规则。 因此，应当理解，它不应用于解释或限制权利要求书的范围或含义。

公开(公告)号：US20100232384A1

公开(公告)日：2010-09-16

申请号：US12722502

申请日：2010-03-11

Applicant: Amir Farajidana ,  Kapil Bhattad ,  Alexei Y. Gorokhov ,  Juan Montojo

Inventor： Amir Farajidana ,  Kapil Bhattad ,  Alexei Y. Gorokhov ,  Juan Montojo

IPC: H04W4/00

CPC classification number: H04L5/005 ,  H04B7/0632 ,  H04L5/0051 ,  H04L25/0206 ,  H04L25/0226

Abstract: Systems and methods are disclosed to facilitate wireless communications. The systems and methods include generating one or more user specific reference signals (UE-RS) and one or more common reference signals (CRS) at a transmitting node; transmitting the UE-RS and the CRS to a user (UE) using a transmission scheme in accordance with a mapping function to enable the UE to estimate a channel based upon CRS observations, UE-RS observations, and the mapping function; and transmitting data using the transmission scheme in accordance with the mapping function.

Abstract translation: 公开了系统和方法以促进无线通信。 系统和方法包括在发射节点处产生一个或多个用户特定参考信号（UE-RS）和一个或多个公共参考信号（CRS）; 使用根据映射功能的传输方案将UE-RS和CRS发送给用户（UE），以使UE能够基于CRS观测，UE-RS观测和映射功能来估计信道; 以及根据映射函数使用传输方案发送数据。

公开(公告)号：US20100118839A1

公开(公告)日：2010-05-13

申请号：US12611620

申请日：2009-11-03

Applicant: Durga Prasad Malladi ,  Juan Montojo ,  Amir Farajidana ,  Kapil Bhattad

Inventor： Durga Prasad Malladi ,  Juan Montojo ,  Amir Farajidana ,  Kapil Bhattad

IPC: H04J3/06 ,  H04W4/00

CPC classification number: H04J11/00 ,  H04B7/0617 ,  H04L27/261

Abstract: Systems and methodologies are described that facilitate conveying information utilizing a constant phase offset on Primary Synchronization Signal (PSS). In general, the subject innovation can employ a fixed set of beams and phases in which a PSS and a Secondary Synchronization Signal (SSS) can be transmitted with the fixed set of beams and phases. Furthermore, the phase offset for PSS and SSS can be the same such that legacy user equipment is unaffected or aware of such transmissions.

Abstract translation: 描述了利用主同步信号（PSS）上的恒定相位偏移来传送信息的系统和方法。 通常，本发明可以采用固定的一组波束和相位，其中PSS和次同步信号（SSS）可以用固定的波束和相位组来传输。 此外，PSS和SSS的相位偏移可以相同，使得传统用户设备不受影响或意识到这种传输。