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    METHOD AND APPARATUS FOR TRANSMISSION BY TIME DIVISION DUPLEXING (TDD) DEVICES USING MULTIPLE ANTENNAS
    1.
    发明申请
    METHOD AND APPARATUS FOR TRANSMISSION BY TIME DIVISION DUPLEXING (TDD) DEVICES USING MULTIPLE ANTENNAS 审中-公开
    使用多个天线的时分双工（TDD）设备传输的方法和装置

    公开(公告)号：WO2014200958A3

    公开(公告)日：2015-02-19

    申请号：PCT/US2014041625

    申请日：2014-06-10

    Applicant: QUALCOMM INC

    Inventor： YAN HONGBO ,  KANG INSUNG ,  FILIPOVIC DANIEL FRED ,  FAN MICHAEL MINGXI ,  HE NING ,  LIU MINKUI

    IPC: H04B7/06 ,  H04B7/04 ,  H04W52/42

    CPC classification number: H04B7/26 ,  H04B7/0404 ,  H04B7/0608 ,  H04W52/34 ,  H04W52/42

    Abstract: TDD devices may transmit using multiple antennas. First and second antennas having first and second receive conditions may receive a communication. In an aspect, first and second transmit conditions for the first and second antennas may be determined based on the first and second receive conditions. In an aspect, the first and second transmit conditions may be compared to select the first or second antenna for transmissions. In an aspect, the first and second receive conditions may be compared to select the first or second antenna for transmissions. In an aspect, first and second transmission conditioning values, which may determine transmission powers, may be determined based on the first and second receive conditions. A first transmission chain, associated with an active radio access technology (RAT) or carrier, and a second transmission chain, associated with an inactive RAT or carrier, may be activated to send transmissions from the first and second antennas.

    Abstract translation: TDD设备可以使用多个天线发射。 具有第一和第二接收条件的第一和第二天线可以接收通信。 在一方面，可以基于第一和第二接收条件来确定用于第一和第二天线的第一和第二发射条件。 在一个方面，可以比较第一和第二发射条件以选择用于传输的第一或第二天线。 在一个方面，可以比较第一和第二接收条件以选择用于传输的第一或第二天线。 在一方面，可以基于第一和第二接收条件来确定可以确定发射功率的第一和第二传输调节值。 可以激活与非活动RAT或载波相关联的有源无线电接入技术（RAT）或载波和第二传输链相关联的第一传输链，以从第一和第二天线发送传输。

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