Method and device for performing fast fallback in order to avoid link disconnection in wireless access system supporting millimeter wave (mmWave)

    公开(公告)号:US10313950B2

    公开(公告)日:2019-06-04

    申请号:US15329978

    申请日:2015-09-21

    Abstract: The present invention relates to a wireless access system supporting a millimeter wave (mmWave), and provides methods for performing a fast fallback in order to avoid a link disconnection and devices supporting the same. As an embodiment of the present invention, a method for performing a fast fallback by a terminal in a wireless access system supporting a millimeter wave (mmWave) may comprise the steps of: establishing radio resource control (RRC) connections with a mmWave base station and a legacy base station, respectively; receiving downlink data transmitted from the mmWave base station; receiving, from the legacy base station, resource-related information associated with a resource to be allocated for a fast fallback; detecting whether a non-light of sight (NLoS) transition occurs in a mmWave link with the mmWave base station; and when the NLoS transition occurs, transmitting a fallback request message to the legacy base station in order to perform the fast fallback.

    Method and apparatus for cancelling self-interference signal between transmission antenna and reception antenna
    50.
    发明授权
    Method and apparatus for cancelling self-interference signal between transmission antenna and reception antenna 有权
    用于消除发射天线和接收天线之间的自干扰信号的方法和装置

    公开(公告)号:US09438356B2

    公开(公告)日:2016-09-06

    申请号:US14988426

    申请日:2016-01-05

    Abstract: An apparatus for cancelling a self-interference signal between a transmission antenna and a reception antenna is disclosed. The apparatus includes a first self-interference signal cancellation unit for cancelling a self-interference signal in consideration of a linear channel between the transmission antenna and the reception antenna, a second self-interference signal cancellation unit for cancelling a self-interference signal in consideration of nonlinear channel characteristic between the transmission antenna and the reception antenna or linear characteristic of a radio channel, and a controller for comparing a transmitted signal output from the transmission antenna and a received signal received by the reception antenna to provide a first coefficient to be applied to self-interference signal cancellation of a linear device in the first self-interference signal cancellation unit and a second coefficient to be applied to self-interference signal cancellation of a nonlinear device in the second self-interference signal cancellation unit.

    Abstract translation: 公开了一种用于消除发射天线和接收天线之间的自干扰信号的装置。 该装置包括:第一自干扰信号消除单元,用于考虑发射天线与接收天线之间的线性信道来消除自干扰信号;第二自干扰信号消除单元,用于消除考虑到的自干扰信号 发送天线与接收天线之间的非线性信道特性或无线信道的线性特性,以及用于比较从发送天线输出的发送信号与接收天线接收到的接收信号的控制器,以提供要应用的第一系数 在第一自干扰信号消除单元中对线性设备进行自干扰信号消除,以及第二系数被应用于第二自干扰信号消除单元中的非线性设备的自干扰信号消除。

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