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    • 7. 发明申请
    • SELECTING ANTENNA PORTS FOR REFERENCE SIGNAL BASED ON MOBILITY AND CSI FEEDBACK IN WIRELESS NETWORKS WITH DISTRIBUTED REMOTE RADIO HEADS
    • 基于移动性的参考信号选择天线端口和无线网络中具有分布式远程无线电头的CSI反馈
    • WO2012112455A1
    • 2012-08-23
    • PCT/US2012/024896
    • 2012-02-13
    • QUALCOMM INCORPORATEDLUO, XiliangXU, HaoCHEN, WanshiJI, TingfangGAAL, PeterMONTOJO, Juan
    • LUO, XiliangXU, HaoCHEN, WanshiJI, TingfangGAAL, PeterMONTOJO, Juan
    • H04W72/08
    • H04W72/082H04W72/0413H04W72/048H04W88/085
    • Wireless networks may include remote radio heads (RRHs) for extending the coverage of a macro cell. The macro cell may be connected to the RRHs, for example, by optical fiber, and there may be negligible latency between the macro cell and the RRHs. As a user equipment (UE) moves within the macro cell, or between other macro cells, mobility procedures followed by the UE may vary based on the release of the UE (e.g., Rel-8/9, Rel-10, or Rel-11 and beyond). The macro cell may handle all the scheduling within the cell, for itself and the RRHs. The method comprises the steps of: - Receiving CSI feedback from a user equipment based on the CSI feedback, select one or more antenna ports for transmitting reference signals, wherein the one or more antenna ports are a least antenna ports of a base station or antenna ports of remote radio heads under control of the base station, - determine whether to update the selection of the one or more antenna ports based at least in part on a change in location or a mobility of the user equipment.
    • 无线网络可以包括用于扩展宏小区的覆盖的远程无线电头(RRH)。 宏小区可以例如通过光纤连接到RRH,并且在宏小区和RRH之间可能存在可忽略的等待时间。 当用户设备(UE)在宏小区内或其他宏小区之间移动时,UE所遵循的移动性过程可以基于UE的释放而变化(例如,Rel-8/9,Rel-10或Rel- 11及以上)。 宏小区可以处理单元内的所有调度,用于其本身和RRH。 该方法包括以下步骤: - 基于CSI反馈从用户设备接收CSI反馈,选择用于发送参考信号的一个或多个天线端口,其中所述一个或多个天线端口是基站或天线的最小天线端口 在基站的控制下的远程无线电头的端口, - 至少部分地基于用户设备的位置或移动性的变化来确定是否更新所述一个或多个天线端口的选择。