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    • 42. 发明授权
    • Method of reducing intercell interference in wireless communication system and apparatus thereof
    • 减少无线通信系统中小区间干扰的方法及其装置
    • US08891399B2
    • 2014-11-18
    • US13824251
    • 2011-10-12
    • Inkwon SeoHanbyul SeoByounghoon KimKijun Kim
    • Inkwon SeoHanbyul SeoByounghoon KimKijun Kim
    • G01R31/08G06F11/00G08C15/00H04J1/16H04J3/14H04L1/00H04L12/26H04W24/02H04B7/06H04J11/00H04B7/02
    • H04W24/02H04B7/024H04B7/0626H04B7/0639H04J11/0056H04L5/0035
    • A method for transmitting a downlink signal through coordinated beamforming with a neighboring cell at a serving cell includes transmitting first subframe information for designating one or more subframes to the neighboring cell, transmitting first Precoding Matrix Index (PMI) restriction related information including one or more PMIs to a User Equipment (UE) of the serving cell, the PMIs forming a beam so that interference affecting the neighboring cell in the one or more subframes has a constant characteristic, receiving first Channel State Information (CSI) reporting measured in the one or more subframes based on the first PMI restriction related information from the UE of the serving cell, and transmitting a downlink signal to the UE of the serving cell based on the first CSI reporting, the neighboring cell receiving CSI reporting corresponding to the neighboring cell, measured by the UE of the neighboring cell in the one or more subframes.
    • 用于通过协同波束成形与服务小区的相邻小区发送下行链路信号的方法包括:向邻近小区发送用于指定一个或多个子帧的第一子帧信息,发送包括一个或多个PMI的第一预编码矩阵索引(PMI)限制相关信息 到所述服务小区的用户设备(UE),所述PMI形成波束,使得影响所述一个或多个子帧中的相邻小区的干扰具有恒定特性,接收在所述一个或多个子帧中测量的第一信道状态信息(CSI)报告 基于来自所述服务小区的所述UE的所述第一PMI限制相关信息的子帧,以及基于所述第一CSI报告向所述服务小区的所述UE发送下行链路信号,所述相邻小区接收与所述相邻小区相对应的CSI报告, 一个或多个子帧中的相邻小区的UE。