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    • 18. 发明申请
    • METHOD FOR PILOT SYMBOL TRANSMISSION IN DOWNLINK MIMO SYSTEM
    • 下行MIMO系统中的引导符号传输方法
    • US20110244873A1
    • 2011-10-06
    • US13121936
    • 2009-10-01
    • Moon Il LeeSeung Hee HanJa Ho KooHyun Soo KoJae Hoon ChungBin Chul Ihm
    • Moon Il LeeSeung Hee HanJa Ho KooHyun Soo KoJae Hoon ChungBin Chul Ihm
    • H04W72/00
    • H04W48/12H04B7/0413H04L5/0023H04L5/0037H04L5/005H04L5/0051
    • The present invention relates to a method for transmitting a pilot signal in a downlink MIMO (Multi Input Multi Output) system that supports a first UE (User Equipment) supporting N number of transmission antennae out of a total of M transmission antennae and supports a second UE supporting said M (M>N) number of transmission antennae. Said method comprises a step wherein a pilot symbol is placed as an image in the resource block (RB) region on a subframe that enables the transmission of a user-specific pilot symbol to said second UE in a base station; and a step wherein the subframe whereon said pilot symbol has been placed as an image is transmitted, wherein said RB region includes a first region and a second region, and the first region and the second region each include a certain number of continuous OFDM symbols on a respective time axis, and on said first region is placed as an image a cell-specific pilot symbol with respect to the transmission antenna ports 0 to N−1 that can recognize both said first UE and said second UE, and on said second region is placed as an image a user-specific pilot symbol with respect to the transmission antenna ports 0 to M that can recognize said UE only.
    • 本发明涉及一种用于在支持在总共M个传输天线中支持N个发射天线的第一UE(用户设备)的下行链路MIMO(多输入多输出))系统中发送导频信号的方法,并且支持第二 UE支持所述M(M> N)个发射天线。 所述方法包括一个步骤,其中导频符号作为图像被放置在能够在基站中向所述第二UE发送用户专用导频符号的子帧上的资源块(RB)区域中; 并且发送其中所述导频符号已经被放置为图像的子帧的步骤,其中所述RB区域包括第一区域和第二区域,并且第一区域和第二区域各自包括一定数量的连续OFDM符号, 相对于能够识别所述第一UE和所述第二UE的发送天线端口0至N-1,并且在所述第二区域上,在所述第一区域上将所述第一区域作为图像放置为小区特定导频符号, 相对于仅能够识别所述UE的发送天线端口0至M而被放置为图像用户特定的导频符号。