Method and apparatus of using CDD like schemes with UE-RS based open loop beamforming
    81.
    发明授权
    Method and apparatus of using CDD like schemes with UE-RS based open loop beamforming 有权
    使用基于UE-RS的开环波束形成的CDD类似方案的方法和装置

    公开(公告)号:US08934560B2

    公开(公告)日:2015-01-13

    申请号:US13253747

    申请日:2011-10-05

    摘要: 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.

    摘要翻译: 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。

    Reference signal detection
    82.
    发明授权
    Reference signal detection 有权
    参考信号检测

    公开(公告)号:US08934326B2

    公开(公告)日:2015-01-13

    申请号:US13467945

    申请日:2012-05-09

    IPC分类号: H04J1/12 H04J11/00

    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)应用于从相邻小区接收的干扰信号。

    Sample selection for secondary synchronization signal (SSS) detection
    83.
    发明授权
    Sample selection for secondary synchronization signal (SSS) detection 有权
    次同步信号(SSS)检测的采样选择

    公开(公告)号:US08768359B2

    公开(公告)日:2014-07-01

    申请号:US13212812

    申请日:2011-08-18

    IPC分类号: H04W36/00 H04B7/00

    摘要: Methods and apparatus for selecting samples for secondary synchronization signal (SSS) detection are described. Several alternatives are provided for efficient cell identifier detection. In a first alternative, multiple bursts of a signal received from a cell are sampled with non-uniform spacing between sampling intervals to determine a sequence for cell identification. In a second alternative, samples of a first and a second signal received from a stronger cell are cancelled, and a sequence for detecting a weaker cell is determined by reducing effects of the samples of a third signal received from the weaker cell which do not overlap with the primary synchronization signal (PSS) or SSS of the stronger cell. In a third alternative, a sequence for detecting a weaker cell is determined by reducing effects of any sampled bursts that correspond to a high transmission power portion of a signal from a stronger cell.

    摘要翻译: 描述了用于选择二次同步信号(SSS)检测的样本的方法和装置。 提供了多种替代方案用于高效的小区标识符检测。 在第一替代方案中,从采样间隔之间以不均匀的间隔对从小区接收的信号的多个突发进行采样,以确定用于小区识别的序列。 在第二替代方案中,从较强小区接收到的第一和第二信号的样本被取消,并且用于检测较弱小区的序列是通过减少从不重叠的较弱小区接收的第三信号的样本的影响来确定的 具有较强小区的主同步信号(PSS)或SSS。 在第三替代方案中,用于检测较弱小区的序列通过减少对应于来自较强小区的信号的高发射功率部分的任何采样突发的影响来确定。

    Using guard carriers for extra channels
    85.
    发明授权
    Using guard carriers for extra channels 有权
    使用保护运营商额外的频道

    公开(公告)号:US08432939B2

    公开(公告)日:2013-04-30

    申请号:US12233970

    申请日:2008-09-19

    IPC分类号: H04J4/00

    摘要: To assist in minimizing interference, a bandwidth range can have guards on either side to reduce leakage into neighboring bandwidth ranges. However, in relatively low power situations the risk of leakage is reduced. Therefore, the guard bandwidths can be used to open new channels upon which information can be transmitted. Thus, there can be a larger amount of bandwidth used while still retaining protective aspects, such as low interference to neighboring bands. Using the guard bandwidth to transmit new channels facilitates backward compatibility since legacy devices do not commonly monitor the guard bandwidth. These techniques can also be used at high power base stations by advertising a larger guard than necessary to legacy devices and using the additionally created guard bandwidth to transmit new channels.

    摘要翻译: 为了帮助最小化干扰,带宽范围可以防止任何一方将泄漏减少到相邻的带宽范围。 然而,在相对低功率的情况下,泄漏的风险降低。 因此,保护​​带宽可以用于打开可以传输信息的新信道。 因此,可以存在更大量的带宽,同时仍然保留保护方面,例如对相邻频带的低干扰。 使用保护带宽传输新信道有助于向后兼容,因为传统设备通常不会监视保护带宽。 这些技术也可以在高功率基站上使用,比传统设备所需的更大的卫星,并使用另外创建的保护带宽来传输新的信道。

    RATE MATCHING FOR COORDINATED MULTIPOINT TRANSMISSION SCHEMES
    87.
    发明申请
    RATE MATCHING FOR COORDINATED MULTIPOINT TRANSMISSION SCHEMES 审中-公开
    协调多点传输方案的速率匹配

    公开(公告)号:US20120182946A1

    公开(公告)日:2012-07-19

    申请号:US13351156

    申请日:2012-01-16

    IPC分类号: H04W72/04

    摘要: Certain aspects of the present disclosure relate to techniques for determining resource elements REs used for Coordinated Multipoint (CoMP) transmission schemes. The techniques generally include determining, by a User Equipment (UE), a set of data REs used for Coordinated Multipoint (CoMP) operation. The determination is based on a CoMP scheme and data REs available to particular base stations involved in the CoMP operation. The technique further includes processing data received via the CoMP operation on the determined set of data REs.

    摘要翻译: 本公开的某些方面涉及用于确定用于协调多点(CoMP)传输方案的资源元素RE的技术。 技术通常包括由用户设备(UE)确定用于协调多点(CoMP)操作的一组数据RE。 该确定基于CoMP方案和参与CoMP操作的特定基站可用的数据RE。 该技术还包括处理经由所确定的数据RE集合经由CoMP操作接收的数据。

    SAMPLE SELECTION FOR SECONDARY SYNCHRONIZATION SIGNAL (SSS) DETECTION
    88.
    发明申请
    SAMPLE SELECTION FOR SECONDARY SYNCHRONIZATION SIGNAL (SSS) DETECTION 有权
    用于二次同步信号(SSS)检测的样本选择

    公开(公告)号:US20120046056A1

    公开(公告)日:2012-02-23

    申请号:US13212812

    申请日:2011-08-18

    IPC分类号: H04B7/24

    摘要: Methods and apparatus for selecting samples for secondary synchronization signal (SSS) detection are described. Several alternatives are provided for efficient cell identifier detection. In a first alternative, multiple bursts of a signal received from a cell are sampled with non-uniform spacing between sampling intervals to determine a sequence for cell identification. In a second alternative, samples of a first and a second signal received from a stronger cell are cancelled, and a sequence for detecting a weaker cell is determined by reducing effects of the samples of a third signal received from the weaker cell which do not overlap with the primary synchronization signal (PSS) or SSS of the stronger cell. In a third alternative, a sequence for detecting a weaker cell is determined by reducing effects of any sampled bursts that correspond to a high transmission power portion of a signal from a stronger cell.

    摘要翻译: 描述了用于选择二次同步信号(SSS)检测的样本的方法和装置。 提供了多种替代方案用于高效的小区标识符检测。 在第一替代方案中,从采样间隔之间以不均匀的间隔对从小区接收的信号的多个突发进行采样,以确定用于小区识别的序列。 在第二替代方案中,从较强小区接收到的第一和第二信号的样本被取消,并且用于检测较弱小区的序列是通过减少从不重叠的较弱小区接收的第三信号的样本的影响来确定的 具有较强小区的主同步信号(PSS)或SSS。 在第三替代方案中,用于检测较弱小区的序列通过减少对应于来自较强小区的信号的高发射功率部分的任何采样突发的影响来确定。

    METHOD AND APPARATUS FOR ENABLING SIGNAL PROCESSING IN A MULTIPLE ANTENNA REPEATER
    89.
    发明申请
    METHOD AND APPARATUS FOR ENABLING SIGNAL PROCESSING IN A MULTIPLE ANTENNA REPEATER 有权
    用于在多个天线反射器中实现信号处理的方法和装置

    公开(公告)号:US20120027054A1

    公开(公告)日:2012-02-02

    申请号:US13194731

    申请日:2011-07-29

    摘要: Systems and methodologies are described that enable serving cell selection in a wireless network with a multiple antenna repeater operable to support MIMO communications. In one example, a repeater using orthogonal frequency division multiplexing on the downlink can be equipped to receive, by one or more receive antennas, one or more signals using one or more radio frequency (RF) isolation schemes. The repeater can further be equipped to amplify and delay the one or more signals using one or more combination schemes. Moreover, the repeater can be equipped to transmit, by one or more transmit antennas, the amplified and delayed one or more signals, wherein at least one of the one or more receive antennas or the one or more transmit antennas includes two or more antennas.

    摘要翻译: 描述了能够利用可操作以支持MIMO通信的多天线中继器在无线网络中服务小区选择的系统和方法。 在一个示例中,在下行链路上使用正交频分复用的中继器可以被配置成通过一个或多个接收天线使用一个或多个射频(RF)隔离方案来接收一个或多个信号。 中继器还可以被配置成使用一个或多个组合方案来放大和延迟一个或多个信号。 此外,中继器可以被配置成通过一个或多个发射天线发射放大和延迟的一个或多个信号,其中一个或多个接收天线或一个或多个发射天线中的至少一个包括两个或更多个天线。

    METHOD AND APPARATUS FOR COMMUNICATING IN A DOMINANT INTERFERENCE SCENARIO
    90.
    发明申请
    METHOD AND APPARATUS FOR COMMUNICATING IN A DOMINANT INTERFERENCE SCENARIO 有权
    用于在主导干扰场景中进行通信的方法和装置

    公开(公告)号:US20100008317A1

    公开(公告)日:2010-01-14

    申请号:US12499425

    申请日:2009-07-08

    IPC分类号: H04W40/16 H04B17/00

    摘要: Techniques for supporting communication in a dominant interference scenario are described. A user equipment (UE) may communicate with a first base station and may observe high interference from and/or may cause high interference to a second base station. In one design, the first base station may use a first frequency band, which may overlap at least partially with a second frequency band for the second base station and may further extend beyond the second frequency band. The first base station may send at least one synchronization signal and a broadcast channel in a center portion of the first frequency band for use by UEs to detect the first base station. The second frequency band may be non-overlapping with the center portion of the first frequency band. The first base station may also communicate with at least one UE on the first frequency band.

    摘要翻译: 描述了支配主导干扰场景中通信的技术。 用户设备(UE)可以与第一基站进行通信,并且可以观察到高干扰和/或可能对第二基站造成高干扰。 在一种设计中,第一基站可以使用第一频带,其可以至少部分地与第二基站的第二频带重叠,并且可以进一步延伸超过第二频带。 第一基站可以在第一频带的中心部分发送至少一个同步信号和广播信道,供UE使用以检测第一基站。 第二频带可以与第一频带的中心部分不重叠。 第一基站还可以与第一频带上的至少一个UE进行通信。