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    • 31. 发明申请
    • CHANNEL SOUNDING FOR FREQUENCY DIVISION DUPLEX SYSTEM
    • 频道双频系统的通道
    • WO2015024521A1
    • 2015-02-26
    • PCT/CN2014/084888
    • 2014-08-21
    • HUAWEI TECHNOLOGIES CO., LTD.
    • MA, JiangleiJIA, Ming
    • H04W72/04
    • H04W72/1273H04L1/00H04L5/0048H04L5/14H04L25/0226H04W24/02H04W72/1289
    • System and method embodiments are provided for channel sounding in a frequency division duplex (FDD) system. The embodiments enable a transmission point (TP) to determine channel information about a downlink channel from an uplink channel sounding signal received on the downlink channel frequency band during a time window reserved for uplink channel sounding on the downlink channel frequency band. In an embodiment, a method in a controller includes determining with the controller a schedule for an uplink sounding window in a downlink frequency band, wherein the uplink sounding window comprises a transmission window in at least a partial downlink frequency band that is reserved for uplink channel sounding, instructing a TP to signal the schedule to at least one wireless device in a coverage area of the TP, receiving a channel sounding signal in the downlink frequency band, and obtaining downlink channel state information from the channel sounding signal.
    • 系统和方法实施例被提供用于频分双工(FDD)系统中的信道探测。 这些实施例使得传输点(TP)能够在为下行链路信道频带上的上行链路信道探测保留的时间窗口期间从在下行链路信道频带上接收的上行链路信道探测信号确定关于下行链路信道的信道信息。 在一个实施例中,控制器中的方法包括:利用控制器确定下行链路频带中的上行链路探测窗口的调度,其中上行链路探测窗口包括至少部分下行链路频带中的传输窗口,该部分下行链路频带被保留用于上行链路信道 发声,指示TP向TP的覆盖区域中的至少一个无线设备发信号,接收下行频带中的信道探测信号,并从该信道探测信号获得下行链路信道状态信息。