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    • 4. 发明申请
    • CHANNEL FEEDBACK BASED ON REFERENCE SIGNAL
    • 基于参考信号的通道反馈
    • WO2011088403A1
    • 2011-07-21
    • PCT/US2011/021409
    • 2011-01-14
    • QUALCOMM INCORPORATEDCHEN, WanshiBHATTAD, KapilGAAL, PeterGOROKHOV, Alexei, YurievitchMONTOJO, Juan
    • CHEN, WanshiBHATTAD, KapilGAAL, PeterGOROKHOV, Alexei, YurievitchMONTOJO, Juan
    • H04L1/00
    • H04W24/08H04L1/0026H04L1/0028H04L5/0041H04L5/0048
    • Techniques for supporting channel measurement and reporting in a wireless communication system are described. In one design, a cell transmits a cell-specific reference signal (CRS) used for channel estimation and coherent demodulation and a channel spatial information reference signal (CSI-RS) used for channel measurement and channel feedback reporting. The cell may transmit the CSI-RS less frequently than the CRS, or from more antenna ports than the CRS, or on fewer resource elements than the CRS, or a combination thereof. In one design, a user equipment (UE) determines at least one bandwidth part configured for the UE, with each bandwidth part covering at least one subband. The UE receives the CRS and CSI-RS from the cell, determines channel feedback information for the at least one bandwidth part based on the CSI-RS, sends the channel feedback information to the cell, and receives data transmitted by the cell based on the channel feedback information.
    • 描述了在无线通信系统中支持信道测量和报告的技术。 在一种设计中,小区发送用于信道估计和相干解调的小区特定参考信号(CRS)以及用于信道测量和信道反馈报告的信道空间信息参考信号(CSI-RS)。 小区可以比CRS更频繁地发送CSI-RS,或者比比CRS更多的天线端口或比CRS更少的资源元素或其组合来发送CSI-RS。 在一种设计中,用户设备(UE)确定为UE配置的至少一个带宽部分,每个带宽部分覆盖至少一个子带。 UE从小区接收CRS和CSI-RS,基于CSI-RS确定至少一个带宽部分的信道反馈信息,向小区发送信道反馈信息,并接收基于小区的小区发送的数据 渠道反馈信息。