会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 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。
    • 8. 发明申请
    • METHOD AND RADIO NETWORK NODE FOR ENABLING SWITCH OF TRANSMISSION MODE FOR A USER EQUIPMENT
    • 用于用户设备的传输模式切换开关的方法和无线网络节点
    • WO2014179916A1
    • 2014-11-13
    • PCT/CN2013/075179
    • 2013-05-06
    • TELEFONAKTIEBOLAGET L M ERICSSON(PUBL)ZHU, Huaisong
    • ZHU, HuaisongSONG, Xinghua
    • H04W72/12
    • H04W72/042H04L43/16H04W28/18H04W72/085H04W88/06
    • A method and a radio network node (800) for enabling a switch between transmission modes for sending downlink signals to a User Equipment, UE. A switching unit (800a) selects a first transmission mode when downlink signal quality in the UE is above a switching threshold (Th), and selects a second transmission mode when the downlink signal quality is below the switching threshold. An obtaining unit (800c) obtains a first performance level when the first transmission mode is used and the downlink signal quality is within a specific vicinity range from the switching threshold, and obtains a second performance level when the second transmission mode is used and the downlink signal quality is within the specific vicinity range. An adjusting unit (800d) then adjusts the switching threshold (Th) based on a deviation between the first performance level and the second performance level. Thereby, the adjusted switching threshold may be more or less optimized and used to achieve the best possible performance under the currently prevailing circumstances regardless of the downlink signal quality. (Fig. 8)
    • 一种方法和无线电网络节点(800),用于在用于向用户设备(UE)发送下行链路信号的传输模式之间切换。 当UE的下行链路信号质量高于切换阈值(Th)时,切换单元(800a)选择第一传输模式,并且当下行链路信号质量低于切换阈值时选择第二传输模式。 获取单元(800c)在使用第一传输模式并且下行链路信号质量处于从切换阈值的特定附近范围内时获得第一性能水平,并且当使用第二传输模式时获得第二性能水平,并且下行链路 信号质量在特定的范围内。 调整单元(800d)然后基于第一性能水平和第二性能水平之间的偏差来调整切换阈值(Th)。 因此,调整后的切换阈值可能或多或少被优化,并用于在当前主流的情况下实现尽可能好的性能,而不管下行链路信号质量如何。 (图8)
    • 10. 发明申请
    • NODE AND METHOD FOR TRANSMISSION MODE SWITCHING FOR DOWNLINK TRANSMISSION IN DOWNLINK CHANNEL
    • 用于下行通道中下行链路传输的传输模式切换的节点和方法
    • WO2013003973A1
    • 2013-01-10
    • PCT/CN2011/001087
    • 2011-07-01
    • TELEFONAKTIEBOLAGET L M ERICSSON (publ)SONG, XinghuaQIAN, YuWANG, Hai
    • SONG, XinghuaQIAN, YuWANG, Hai
    • H04W24/08
    • H04W72/085H04B7/0417H04B7/0617H04B7/0671H04B7/0689H04L1/0015H04W76/27
    • The present invention discloses a node for transmission mode switching for downlink transmission in a downlink channel (100), comprising: a configuring unit (110) adapted to configure an initial transmission mode for the downlink transmission as a default transmission mode; a deriving unit (120) adapted to derive channel quality metric (CQM) of the downlink channel; a first determining unit (130) adapted to determine a first predefined threshold on the basis of link level simulation of a first transmission mode and a second transmission mode; and a first switching unit (140) adapted to switch the transmission mode from the initial transmission mode to the first transmission mode or the second transmission mode on the basis of the CQM and the first predefined threshold. The present invention provides a simple, direct and efficient approach for transmission mode switching for downlink transmission in a downlink channel on the basis of available feedback from UE (or other kinds of terminals if appropriate) and/or link adaptation decisions from eNB (or other kinds of base stations if appropriate), provides high peak rate while maintaining cell coverage, and provides a proprietary solution without any impact on protocol/standard or UE implementation.
    • 本发明公开了一种用于下行链路信道(100)中下行链路传输的传输模式切换的节点,包括:配置单元(110),用于将下行链路传输的初始传输模式配置为默认传输模式; 导出单元(120),适于导出所述下行链路信道的信道质量度量(CQM); 第一确定单元,适于基于第一传输模式和第二传输模式的链路级仿真来确定第一预定义阈值; 以及适于基于所述CQM和所述第一预定义阈值将所述传输模式从所述初始传输模式切换到所述第一传输模式或所述第二传输模式的第一切换单元。 本发明基于来自UE(或适当的其他类型的终端)的可用反馈和/或来自eNB(或其他的)的链路适配决定,提供了用于下行链路信道中的下行链路传输的传输模式切换的简单,直接和有效的方法 各种基站,如果适用),提供高峰值速率同时保持小区覆盖,并提供专有解决方案,而不会对协议/标准或UE实现任何影响。