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    • 9. 发明公开
    • 다중 안테나를 이용한 신호 전송 방법
    • 使用多个天线发射信号的方法
    • KR1020140089312A
    • 2014-07-14
    • KR1020140000080
    • 2014-01-02
    • 한국전자통신연구원
    • 예충일안재영
    • H04B7/06
    • H04B7/0645H04B7/0413H04B7/063
    • Disclosed is a method for transmitting a signal using multiple antennas. A base station transmits a reference signal using a plurality of beams which are formed using respective multiple antenna groups; receives a first precoder matrix index (PMI-1) and a second precoder matrix index (PMI-2) corresponding to the reference signal from a terminal; and performs precoding of a downlink transmission signal based on a first precoder corresponding to the first precoder matrix index and a second precoder corresponding to the second precoder matrix index. Therefore, the present invention can increase the capacity of a system.
    • 公开了一种使用多个天线发送信号的方法。 基站使用使用相应的多个天线组形成的多个波束来发送参考信号; 从终端接收对应于参考信号的第一预编码器矩阵索引(PMI-1)和第二预编码器矩阵索引(PMI-2); 并且基于与第一预编码器矩阵索引对应的第一预编码器和对应于第二预编码器矩阵索引的第二预编码器执行下行链路传输信号的预编码。 因此,本发明可以增加系统的容量。
    • 10. 发明公开
    • 단말 간 직접 통신을 위한 디스커버리 방법 및 장치
    • 发现设备与设备之间的通信的方法
    • KR1020140065356A
    • 2014-05-29
    • KR1020130141840
    • 2013-11-21
    • 한국전자통신연구원
    • 예충일안재영고영조서방원노태균이경석임민중강충구
    • H04W48/16
    • H04W48/16H04W4/06H04W76/14
    • A method and a device of discovery for device-to-device communications are provided. The discovery method includes a step of transmitting a discovery request message for discovering a neighboring terminal; a step of receiving a response message which is a response to the discovery request message from at least one neighboring terminal; a step of forming a communications link with a first neighboring terminal, which has the shortest distance from a searching terminal, among at least one neighboring terminal based on the discovery response message; a step of receiving neighboring terminal information from the first neighboring terminal through the communications link; and a step of obtaining information of terminal which is neighboring the searching terminal based on the neighboring terminal information.
    • 提供了一种用于设备到设备通信的方法和设备。 发现方法包括发送用于发现相邻终端的发现请求消息的步骤; 从至少一个相邻终端接收作为对所述发现请求消息的响应的响应消息的步骤; 基于所述发现响应消息,在至少一个相邻终端中形成与搜索终端具有最短距离的第一相邻终端的通信链路的步骤; 通过通信链路从第一相邻终端接收相邻终端信息的步骤; 以及基于相邻终端信息获取与搜索终端相邻的终端的信息的步骤。