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1. 发明专利

JP2013232766A Radio communication system, base station device, user terminal, and radio communication method 有权
标题翻译：无线电通信系统，基站设备，用户终端和无线电通信方法
公开(公告)号：JP2013232766A
公开(公告)日：2013-11-14
申请号：JP2012103511
申请日：2012-04-27
申请人： Ntt Docomo Inc , 株式会社エヌ・ティ・ティ・ドコモ
发明人： NAGATA SATOSHI , KISHIYAMA YOSHIHISA , XI WEI , YUN XIANG , CHEN LAN
IPC分类号： H04W28/18 , H04W72/04
CPC分类号： H04L5/0035 , H04L5/0051
摘要： PROBLEM TO BE SOLVED: To provide a radio communication system, base station device, user terminal, and radio communication method that can determine channel quality information adequately considering interference from a plurality of transmission points and the like.SOLUTION: A radio communication system comprises: a plurality of base station devices for transmitting a desired signal measurement reference signal and an interference measurement reference signal for measuring a channel state; and a user terminal for communicating with the plurality of base station devices. Each base station device includes: a determination unit for determining resources to which the desired signal measurement reference signal and the interference measurement reference signal are allocated respectively; and a phase control unit for performing phase rotation of a symbol of the interference measurement reference signal. The determination unit performs control such that the interference measurement reference signal is allocated to the same resource as an interference measurement reference signal to be transmitted by another base station device. The phase control unit performs control such that the symbol of the interference measurement reference signal has a different phase rotation amount from another base station device.
摘要翻译：要解决的问题：提供可以充分考虑来自多个发送点等的干扰的信道质量信息等的无线通信系统，基站装置，用户终端和无线通信方法。解决方案：无线通信系统包括：用于发送期望的信号测量参考信号的多个基站装置和用于测量信道状态的干扰测量参考信号; 以及用于与所述多个基站装置进行通信的用户终端。每个基站设备包括：确定单元，用于确定分配了所需信号测量参考信号和干扰测量参考信号的资源; 以及相位控制单元，用于执行干扰测量参考信号的符号的相位旋转。确定单元执行控制，使得干扰测量参考信号被分配给与由另一个基站设备发送的干扰测量参考信号相同的资源。相位控制单元执行控制，使得干扰测量参考信号的符号与另一个基站装置具有不同的相位旋转量。

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