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    • 42. 发明申请
    • METHOD AND RADIO NODE FOR HANDLING CSI REPORTING
    • 处理CSI报告的方法和无线电节点
    • WO2015023227A1
    • 2015-02-19
    • PCT/SE2014/050942
    • 2014-08-15
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    • SONG, XinghuaLI, ShaohuaGUO, ZhihengFAN, RuiLIU, Jinhua
    • H04W24/10
    • H04W24/10H04B17/309H04L1/0026H04L1/0027H04L5/00H04L5/001H04L5/0035H04L5/0057H04W24/08H04W72/042H04W72/0446H04W72/14
    • Herein a radio node and a User Equipment are described, and methods therein for handling separate aperiodic channel state information, CSI, reports for one or more static subframes, in which the direction of signal transmission is fixed, and one or more flexible subframes, in which the direction of signal transmission is variable. The method performed by a UE comprises receiving a trigger for an aperiodic CSI report as part of an uplink, UL, grant from a radio node in a static downlink, DL, subframe, where said trigger indicates a CSI subframe set, out of at least two alternative CSI subframe sets. The method further comprises performing an aperiodic CSI measurement for a CSI reference resource in the indicated CSI subframe set, and reporting the result of the CSI measurement to the radio node. One of the at least two alternative CSI subframe sets relates to the one or more static subframes, and another one of the at least two alternative CSI subframe sets relates to the one or more flexible subframes.
    • 这里描述了无线电节点和用户设备,以及其中用于处理单独的非周期信道状态信息的CSI,其中固定有信号传输方向的一个或多个静态子帧的报告以及一个或多个灵活子帧 信号传输的方向是可变的。 由UE执行的方法包括:从至少在静态下行链路DL子帧中的无线电节点(其中所述触发指示CSI子帧集合)的至少一个接收非周期性CSI报告的触发作为上行链路UL授权的一部分 两个可选的CSI子帧组。 该方法还包括对所指示的CSI子帧集中的CSI参考资源执行非周期CSI测量,并将CSI测量的结果报告给无线节点。 所述至少两个备选CSI子帧集合中的一个与所述一个或多个静态子帧相关,并且所述至少两个备选CSI子帧集中的另一个涉及所述一个或多个灵活子帧。
    • 49. 发明申请
    • BEAMFORMING WITH PHASE COMPENSATION
    • 具有相位补偿的波束形成
    • WO2013003974A1
    • 2013-01-10
    • PCT/CN2011/001088
    • 2011-07-01
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)SONG, XinghuaXIAO, LeiZHU, Huaisong
    • SONG, XinghuaXIAO, LeiZHU, Huaisong
    • H04B7/01
    • H04B7/01H04B7/0604H04B7/0617H04B7/0626H04B7/0639H04B7/0689H04B7/086H04B7/2643H04B17/10H04B17/11H04L5/14
    • The invention discloses a method and a base station for phase compensation in beamforming in a multi-antenna Time Division Duplex (TDD) communication network. In a first transmission mode, e.g. TM4 or TM8, the base station estimates a first phase shift between a first antenna port and a reference antenna port in uplink based on a measurement of a first Sounding Reference Signal (SRS). Then the base station estimates in the first transmission mode a second phase shift between the first antenna port and the reference antenna port in downlink based on a Channel State Information (CSI) feedback from a User Equipment (UE), and calculates a parameter indicative of a difference between the first phase shift and the second phase shift. In a second transmission mode, e.g. TM7 or TM8, the base station estimates a third phase shift between the first antenna port and the reference antenna port in uplink based on a measurement of a second SRS, and calculates in the second transmission mode, a fourth phase shift between the first antenna port and the reference antenna port in downlink as a difference between the third phase shift and the parameter. The base station then compensates in the second transmission mode, the phase of input signal on the first antenna port by the fourth phase shift for beamforming.
    • 本发明公开了一种在多天线时分双工(TDD)通信网络中的波束成形中的相位补偿的方法和基站。 在第一传输模式中,例如, TM4或TM8,基站基于第一探测参考信号(SRS)的测量来估计上行链路中的第一天线端口和参考天线端口之间的第一相移。 然后,基站基于来自用户设备(UE)的信道状态信息(CSI)反馈,在第一传输模式中估计第一天线端口和下行链路中的参考天线端口之间的第二相移,并且计算表示 第一相移和第二相移之间的差。 在第二传输模式中,例如, TM7或TM8,基站基于第二SRS的测量来估计上行链路中的第一天线端口和参考天线端口之间的第三相移,并且在第二传输模式中计算第一天线端口与第二天线端口之间的第四相移 和下行链路中的参考天线端口作为第三相移与参数之间的差。 然后,基站在第二传输模式下补偿第一天线端口上的输入信号的相位,用于波束形成的第四相移。