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    • 85. 发明申请
    • RADIO BASE STATION APPARATUS, USER TERMINAL APPARATUS, RADIO COMMUNICATION SYSTEM AND RADIO COMMUNICATION METHOD
    • 无线基站装置,用户终端装置,无线电通信系统和无线电通信方法
    • US20140086202A1
    • 2014-03-27
    • US14115257
    • 2012-04-24
    • Satoshi NagataTetsushi AbeYoshihisa KishiyamaKazuaki Takeda
    • Satoshi NagataTetsushi AbeYoshihisa KishiyamaKazuaki Takeda
    • H04L5/00
    • H04L5/0007H04L5/001H04L5/0023H04L5/0039H04L5/0048H04L5/0053H04W72/042
    • To provide a radio base station apparatus that enables the effect of improving usage efficiency of radio resources to be exerted sufficiently also in the case where the number of user terminals multiplexed into the same radio resources further increases, the radio base station apparatus performs communications using a first resource region for a downlink control channel subjected to time division, and a second resource region for a downlink data channel, and is characterized by being provided with generation sections (307, 308) that generate a first notification signal for notifying of the number of OFDM symbols of the first resource region, and a second notification signal for notifying of a starting position in the time domain of a third resource region obtained by performing frequency division on a part of the second resource region, and a multiplexing section (312) that multiplexes the first notification signal into the first resource region, and the second notification signal into the third resource region.
    • 为了提供能够在多路复用到同一无线电资源中的用户终端的数量进一步增加的情况下充分发挥提高无线资源的使用效率的效果的无线基站装置,无线基站装置使用 经受时分的下行链路控制信道的第一资源区域和下行链路数据信道的第二资源区域,并且其特征在于具有生成部分(307,308),其生成用于通知数量的第一通知信号 第一资源区域的OFDM符号和用于通知在第二资源区域的一部分上进行分频获得的第三资源区域的时域中的起始位置的第二通知信号,以及复用部(312),其中, 将第一通知信号复用到第一资源区域中,并将第二通知信号复用为 第三资源区域。
    • 89. 发明授权
    • Radio communication system, radio communication method, radio base station apparatus and user terminal
    • 无线通信系统,无线通信方式,无线基站装置和用户终端
    • US09313014B2
    • 2016-04-12
    • US14234438
    • 2012-07-26
    • Satoshi NagataTetsushi AbeYoshihisa KishiyamaKazuaki Takeda
    • Satoshi NagataTetsushi AbeYoshihisa KishiyamaKazuaki Takeda
    • H04W72/00H04L5/00H04J11/00H04B7/02
    • H04L5/0091H04B7/024H04J11/0053H04L5/001H04L5/0035H04L5/0053
    • The present invention is designed to apply CoMP transmission/reception flexibly in a system band that is formed with a plurality of fundamental frequency blocks, improve received quality in user terminals, and also widen the system band. A first radio base station apparatus (20A) that transmits downlink data to a user terminal (10) using a plurality of cells that respectively correspond to fundamental frequency blocks of varying frequency bands, and a second radio base station apparatus (20B) that transmits downlink data to the user terminal (10) using a cell that corresponds to fundamental frequency block of the same frequency band as one of a plurality of cells are provided, and the first radio base station apparatus (20A) and the second radio base station apparatus (20B) perform coordinated multiple-point transmission for the user terminal 10 between cells corresponding to the same fundamental frequency block, and also report information about the combination of cells that perform the coordinated multiple-point transmission to the user terminal (10).
    • 本发明被设计为在形成有多个基本频率块的系统频带中灵活地应用CoMP发送/接收,提高用户终端的接收质量,并且还扩大系统频带。 第一无线基站装置(20A),其使用分别对应于变化频带的基本频率块的多个小区向下一个用户终端(10)发送下行链路数据;以及第二无线基站装置(20B),其向下行链路 提供使用与多个小区中的一个相同频带的基本频率块对应的小区向用户终端(10)发送的数据,第一无线基站装置(20A)和第二无线基站装置 20B)在对应于同一基本频率块的小区之间对用户终端10执行协调的多点传输,并且还向用户终端(10)报告关于执行协调多点传输的小区的组合的信息。
    • 90. 发明授权
    • User equipment and channel state information feedback method
    • 用户设备和信道状态信息反馈方法
    • US08971436B2
    • 2015-03-03
    • US13703913
    • 2011-06-17
    • Satoshi NagataYoshihisa KishiyamaXiang YunJianchi ZhuXiaoming SheLan Chen
    • Satoshi NagataYoshihisa KishiyamaXiang YunJianchi ZhuXiaoming SheLan Chen
    • H04B7/02H04B7/04H04B7/06H04L1/00H04L5/00
    • H04B7/0478H04B7/024H04B7/0456H04B7/0482H04B7/0632H04L1/0015H04L1/0026H04L1/0031H04L5/0035
    • The present invention provides a user equipment and channel state information feedback method. The channel state information feedback method used in a coordinated multi-point system includes acquiring small-scale channel state information H′=[H′1, H′2, . . . , H′K] between a user equipment and all base stations joining coordination, acquiring large-scale channel state information li(i=1, . . . , K) between the user equipment and each of the base stations joining coordination, acquiring a CQI (CQIi=li▪|H′|, i=1, . . . , K) between the user equipment and each of the base stations joining coordination based on the small-scale channel state information and the large-scale channel state information, updating the source codebook C using the acquired CQI to acquire an updated codebook{tilde over (C)},performing quantization processing using the updated codebook to acquire CDI, and transmitting the CDI and the CQI associated with each of the base stations joining coordination to a base station as feedback to provide for channel reconstruction in the base station. According to the invention, the rate of utilization of feedback information is improved.
    • 本发明提供一种用户设备和信道状态信息反馈方法。 在协调多点系统中使用的信道状态信息反馈方法包括获取小规模信道状态信息H'= [H'1,H'2,...] 。 。 ,H'K]在用户设备和所有基站之间加入协调,获取用户设备和每个基站之间加入协调的大规模信道状态信息li(i = 1,...,K),获取 基于小规模信道状态信息和大规模信道状态信息,用户设备与加入协调的每个基站之间的CQI(CQIi =li▪| H'|,i = 1,...,K) 使用获取的CQI更新源码本C以获取更新的码本((C)),使用更新的码本执行量化处理以获取CDI,以及发送与连接协调的每个基站相关联的CDI和CQI 作为反馈提供给基站中的信道重建的基站。 根据本发明,提高了反馈信息的利用率。