Antenna switching for data transmission in a communication system using a plurality of transmission antennas
    9.
    发明授权
    Antenna switching for data transmission in a communication system using a plurality of transmission antennas 有权
    用于使用多个发送天线的通信系统中的数据传输的天线切换

    公开(公告)号:US08774736B2

    公开(公告)日:2014-07-08

    申请号:US12449240

    申请日:2008-01-21

    IPC分类号: H04B1/02

    摘要: A closed-loop antenna switching method, a reference signal allocating method, and a feedback signal transmitting method for the same are disclosed. Namely, by transmitting a reference signal via the plurality of transmitting antennas via the antenna switching for reference signal transmission for each prescribed multiple period of an antenna selection period, efficient antenna index information can be fed back. By setting an antenna switching period to a prescribed multiple of an antenna selection period, it is able to prevent power loss and data decoding performance degradation. And, the present invention includes transmitting a sounding reference signal (SRS) for each band selection period via at least one of the plurality of transmitting antennas and transmitting at least one data demodulation reference signal (DMRS) between the band selection periods via an antenna for not transmitting data by reference signal transmission antenna switching.

    摘要翻译: 公开了一种闭环天线切换方法,参考信号分配方法及其反馈信号发送方法。 即,通过天线选择期间的规定的多个周期,经由用于参考信号发送的天线切换,经由多个发送天线发送参考信号,可以反馈有效的天线索引信息。 通过将天线切换周期设定为规定的天线选择周期的倍数,能够防止功率损耗和数据解码性能下降。 并且,本发明包括经由多个发送天线中的至少一个发送用于每个频带选择周期的探测参考信号(SRS),并且经由天线发送在频带选择周期之间的至少一个数据解调参考信号(DMRS),用于 不通过参考信号发送天线切换发送数据。