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    METHOD AND APPARATUS FOR ANTENNA ARRAY CALIBRATION USING TRAFFIC SIGNALS
    2.
    发明授权
    METHOD AND APPARATUS FOR ANTENNA ARRAY CALIBRATION USING TRAFFIC SIGNALS 有权
    用于使用交通信号进行天线阵列校准的方法和设备

    公开(公告)号：EP2920897B1

    公开(公告)日：2017-08-02

    申请号：EP13802444.3

    申请日：2013-11-12

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： DA SILVEIRA, Marthinus Willem ,  MCGOWAN, Neil

    IPC分类号： H04B17/12 ,  H04B7/06 ,  H04L25/03

    CPC分类号： H04L25/03949 ,  H04B7/06 ,  H04B17/12

    摘要： An antenna array of a base station is calibrated using outbound traffic signals. The outbound traffic signals are captured for use as reference signals before the outbound traffic signals enter transmit paths in a radio unit of the base station. The outbound traffic signals are captured for use as a feedback after the outbound traffic signals exit the transmit paths. Each of the reference signals is one of the outbound traffic signals to be transmitted. An impairment estimator estimates the impairment for each of the outbound traffic signals based on the feedback signal and the reference signals. For each transmit path, a set of weights of an all-pass filter is determined, where the all-pass filter has a frequency response that approximates the impairment estimation in an occupied frequency region where reference signal power is above a threshold. The set of weights is inversed to obtain equalizer taps for each of the transmit paths.

    摘要翻译： 基站的天线阵列使用出站交通信号进行校准。 在出站话务信号进入基站的无线电单元中的发射路径之前，出站话务信号被捕获以用作参考信号。 在出站话务信号退出发射路径后，捕获出站话务信号以用作反馈。 每个参考信号是要传输的外出交通信号之一。 损害估计器基于反馈信号和参考信号来估计每个出站话务信号的损害。 对于每个发射路径，确定全通滤波器的一组权重，其中全通滤波器具有近似在参考信号功率高于阈值的占用频率区域中的损伤估计的频率响应。 该组权重被反转以获得每个发送路径的均衡器抽头。

    SIMPLE RACH (SRACH)
    5.
    发明公开
    SIMPLE RACH (SRACH) 审中-公开
    SIMPLE RACH（SRACH）

    公开(公告)号：EP3183834A1

    公开(公告)日：2017-06-28

    申请号：EP14759058.2

    申请日：2014-08-18

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： MCGOWAN, Neil ,  DA SILVEIRA, Marthinus Willem

    IPC分类号： H04L5/00 ,  H04W74/08

    摘要： Systems and methods for providing random access in a cellular communications network are disclosed. In general, the cellular communications network is an Orthogonal Frequency Division Modulation (OFDM) based cellular communications network (e.g., a 3 GPP LTE cellular communications network) or similar multi-subcarrier based cellular communications network. Random access is performed using a Physical Random Access Channel (PRACH) including subcarriers having a subcarrier frequency spacing that is equal to a subcarrier frequency spacing in one or more other channels of the uplink (e.g., a Physical Uplink Shared Channel (PUSCH)). As a result, the subcarriers in the PRACH are orthogonal to the subcarriers in the other channel(s) of the uplink, which in turn reduces, or substantially eliminates, interference between the PRACH subcarriers and the subcarriers of the other channel(s) of the uplink.

    摘要翻译： 公开了用于在蜂窝通信网络（74）中提供随机接入的系统和方法。 通常，蜂窝通信网络（74）是基于正交频分调制（OFDM）的蜂窝通信网络（例如3GPP LTE蜂窝通信网络）或类似的基于多副载波的蜂窝通信网络。 使用包括子载波频率间隔等于上行链路的一个或多个其他信道（例如，物理上行链路共享信道（PUSCH））中的子载波频率间隔的子载波的物理随机接入信道（PRACH）来执行随机接入。 结果，PRACH中的副载波与上行链路的其他信道中的副载波正交，这又减少或基本上消除了PRACH副载波和其他信道的副载波之间的干扰。 上行链路。

    MULTI-SECTOR ANTENNA INTEGRATED RADIO UNIT
    6.
    发明公开
    MULTI-SECTOR ANTENNA INTEGRATED RADIO UNIT 审中-公开
    INTEGRIERTE FUNKEINHEIT MIT ANTENNE MIT MEHREREN SEKTOREN

    公开(公告)号：EP3138356A1

    公开(公告)日：2017-03-08

    申请号：EP14727059.9

    申请日：2014-04-30

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： DA SILVEIRA, Marthinus Willem ,  MCGOWAN, Neil ,  BEN GHALBA, Slim

    IPC分类号： H04W88/08 ,  H04B1/04

    CPC分类号： H04B7/04 ,  H04B1/04 ,  H04W88/08

    摘要： Embodiments of a system for a multi-sector base station in a cellular communications network are disclosed. In one embodiment, the system includes an integrated unit, where the integrated unit includes multiple antennas and a radio unit (RU) coupled to the antennas. By integrating the multiple antennas and the radio RU into a single integrated unit, the system can, in some embodiments, reduce installation and operating costs of the multi-sector base station.

    摘要翻译： 公开了一种用于蜂窝通信网络中的多扇区基站的系统的实施例。 在一个实施例中，系统包括集成单元，其中集成单元包括多个天线以及耦合到天线的无线电单元（RU）。 通过将多个天线和无线电RU集成到单个集成单元中，在一些实施例中，系统可以降低多扇区基站的安装和运行成本。

    ANTENNA ARRAY CALIBRATION USING TRAFFIC SIGNALS
    8.
    发明授权
    ANTENNA ARRAY CALIBRATION USING TRAFFIC SIGNALS 有权
    利用交通信号进行天线阵列校准

    公开(公告)号：EP2920896B1

    公开(公告)日：2017-09-20

    申请号：EP13802443.5

    申请日：2013-11-12

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： MCGOWAN, Neil ,  DA SILVEIRA, Marthinus Willem ,  HO, Tan

    IPC分类号： H04B17/12 ,  H04B7/06 ,  H04L25/03 ,  H04W72/04 ,  H04W72/08 ,  H04W88/08

    CPC分类号： H04W72/082 ,  H04B7/06 ,  H04B17/12 ,  H04L25/03949 ,  H04W72/044 ,  H04W72/0446 ,  H04W88/08

    摘要： An antenna array of a base station is calibrated using outbound traffic signals. The antenna array includes a number of sub-arrays. A combiner in the antenna array combines the outbound traffic signals in the sub-arrays into a feedback signal. The outbound traffic signals are captured simultaneously for use as reference signals before the outbound traffic signals enter transmit paths in a radio unit of the base station. Each of the reference signals is one of the outbound traffic signals that is to be transmitted via one of the sub-arrays. An impairment estimator of the base station estimates the impairment for each of the outbound traffic signals based on the feedback signal and the reference signals. An approximate inverse of the impairment estimation is applied to the outbound traffic signals by a number of equalizers before the outbound traffic signals enter the transmit paths.

    摘要翻译： 基站的天线阵列使用出站交通信号进行校准。 天线阵列包括多个子阵列。 天线阵列中的组合器将子阵列中的出站话务信号组合成反馈信号。 在出站话务信号进入基站的无线电单元中的发射路径之前，出站话务信号被同时捕获以用作参考信号。 每个参考信号是要通过其中一个子阵列发送的出站话务信号之一。 基站的损害估计器基于反馈信号和参考信号来估计每个出站话务信号的损害。 在出站话务信号进入发送路径之前，通过多个均衡器将减值估算的近似倒数应用于出站话务信号。