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    • 44. 发明申请
    • BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS AND COMMUNICATION CONTROL METHOD
    • 基站装置,移动终端装置和通信控制方法
    • US20130336150A1
    • 2013-12-19
    • US13985355
    • 2012-02-13
    • Tetsushi AbeSatoshi NagataMikio Iwamura
    • Tetsushi AbeSatoshi NagataMikio Iwamura
    • H04W72/08
    • H04W72/085H04L5/0023H04L5/0048H04L5/0053H04L5/0062H04L5/0073H04L5/0091H04L5/0098H04L25/0204H04W24/10
    • The present invention makes it possible to transmit and receive CSI-RSs adequately even when the number of CSI-RSs increase following the increase of antennas. The present invention provides a base station apparatus (20) that transmits CSI-RSs to a mobile terminal apparatus (10A) which is capable of receiving CSI-RSs for channel state measurement from a plurality of antennas, and to a mobile terminal apparatus (10B) which is capable of receiving CSI-RSs from a smaller number of antennas than the mobile terminal apparatus, and this base station apparatus has a CSI-RS allocation section (211) which allocates CSI-RSs for the number of antennas which the mobile terminal apparatus (10A) supports, to radio resources, and a transmitting/receiving section which reports, to the mobile terminal apparatus (10A), the resources where the CSI-RSs are allocated, and which, upon reporting the resources where CSI-RSs are allocated, to the mobile terminal apparatus (10B), reports part of the resources as resources to be muted.
    • 即使CSI-RS的数量随着天线的增加而增加,本发明也可以适当地发送和接收CSI-RS。 本发明提供一种向能够从多个天线接收用于信道状态测量的CSI-RS的移动终端装置(10A)向移动终端装置(10B)发送CSI-RS的基站装置(20) ),其能够从比移动终端装置更少数量的天线接收CSI-RS,并且该基站装置具有CSI-RS分配部(211),CSI-RS分配部(211)为移动终端 对无线电资源支持装置(10A)以及向移动终端装置(10A)报告分配了CSI-RS的资源的发送/接收部分,并且在报告CSI-RS的资源 分配给移动终端装置(10B),将部分资源报告为要静音的资源。
    • 45. 发明申请
    • MOBILE TERMINAL APPARATUS, RADIO BASE STATION APPARATUS AND RADIO COMMUNICATION METHOD
    • 移动终端装置,无线基站装置和无线电通信方法
    • US20130294279A1
    • 2013-11-07
    • US13978330
    • 2011-12-09
    • Satoshi NagataTetsushi AbeYoshihisa Kishiyama
    • Satoshi NagataTetsushi AbeYoshihisa Kishiyama
    • H04B7/04
    • H04B7/0456H04B7/024H04L25/0226H04L25/03904H04L25/03955
    • Provided are a mobile terminal apparatus, a radio base station apparatus and a radio communication method capable of making the most of the effects of the MIMO technique and the CoMP technique, when employing both of the techniques. According to the radio communication method of the present invention, a mobile terminal apparatus estimates downlink channel states using respective reference signals included in downlink signals from plural cells; selects PMIs using a codebook based on the channel states; estimates a phase difference between the cells based on the selected PMIs or the channel states; and transmits information of the phase difference and the selected PMIs to radio base station apparatuses of the respective cells. A radio base station apparatus receives an uplink signal including a PMI and the information of the phase difference between the cells; multiplies a transmission signal by a precoding weight corresponding to the PMI; adjusts the phase difference between the cells with use of the information of the phase difference between the cells; and transmits the transmission signal to a radio base station apparatus of another cell by coordinated multi-point transmission.
    • 提供了当采用这两种技术时能够充分发挥MIMO技术和CoMP技术的效果的移动终端装置,无线电基站装置和无线电通信方法。 根据本发明的无线通信方法,移动终端装置使用来自多个小区的下行链路信号中包含的各个参考信号来估计下行链路信道状态; 基于信道状态选择使用码本的PMI; 基于所选择的PMI或信道状态来估计小区之间的相位差; 并将相位差信息和所选择的PMI发送到各小区的无线基站装置。 无线基站装置接收包括PMI的上行链路信号和小区之间的相位差的信息; 将发送信号乘以对应于PMI的预编码权重; 使用细胞之间的相位差的信息来调整细胞之间的相位差; 并通过协调的多点发送将发送信号发送到另一小区的无线基站装置。
    • 46. 发明申请
    • RELAY TRANSMISSION METHOD, RELAY STATION AND RADIO BASE STATION
    • 继电器传输方法,继电器和无线电基站
    • US20130208650A1
    • 2013-08-15
    • US13816739
    • 2011-08-11
    • Satoshi NagataTetsushi Abe
    • Satoshi NagataTetsushi Abe
    • H04W16/26
    • H04W16/26H04B7/15542H04W84/047
    • Provided is a radio communication system using a relay transmission technique capable of optimizing use of radio resources in a radio base station and preventing reduction in capacity of the whole system. The relay frequency allocation method of the present invention has the steps of: radio base stations (10a) and (10b) transmitting downlink data to a relay station (30) using respective backhaul links established between the relay station (30) and the radio base stations (10a) and (10b); and the relay station (30) transmitting the downlink data received from the radio base stations (10a) and (10b), to a relay terminal (20b) by using an access link established between the relay station (30) and the relay terminal (20b).
    • 提供一种使用能够优化无线基站中的无线资源的使用的中继传输技术的无线通信系统,并且防止整个系统的容量的降低。 本发明的中继频率分配方法具有以下步骤:无线基站(10a)和(10b)使用在所述中继站(30)和所述无线基站之间建立的各自的回程链路向中继站(30)发送下行链路数据 站(10a)和(10b); 以及所述中继站(30)通过使用在所述中继站(30)和所述中继站(30)之间建立的接入链路,将从所述无线基站(10a)和(10b)接收到的下行链路数据发送到中继终端 20b)。