公开(公告)号：US20140294107A1

公开(公告)日：2014-10-02

申请号：US14088986

申请日：2013-11-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Choon Woo SHIN

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626

Abstract: Double codebook-based multi-user, a multi-antenna transmission apparatus and a transmission method are started. A transmission apparatus includes an effective channel information reception unit configured to receive an effective channel matrix for a transmission channel, a zero-forcing precoding unit configured to receive data streams and perform zero-forcing precoding to null inter-user interference based on the effective channel matrix, a beam forming unit configured to receive the data streams subjected to the zero-forcing precoding from the zero-forcing precoding unit and perform beam forming, and a multi-antenna array configured to transmit the data streams subjected to the beam forming by the beam forming unit to the multi-user. With the method and apparatus, it is possible to improve a transmission capacity and effectively process an interference between terminals in a multi-layer beam forming environment.

Abstract translation: 开始基于双码本的多用户，多天线发送装置和发送方法。 发送装置包括：有效信道信息接收单元，被配置为接收传输信道的有效信道矩阵;强迫预编码单元，被配置为基于所述有效信道接收数据流并执行迫零预编码，以消除用户间干扰 矩阵，波束形成单元，被配置为从迫零预编码单元接收经受迫零预编码的数据流，并执行波束形成;以及多天线阵列，被配置为将经过波束形成的数据流 波束形成单元给多用户。 利用该方法和装置，可以提高传输容量并有效地处理多层波束形成环境中的终端之间的干扰。

公开(公告)号：US20140293853A1

公开(公告)日：2014-10-02

申请号：US14224723

申请日：2014-03-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dae Soon CHO ,  Choon Woo SHIN ,  Il Gyu KIM

IPC: H04W56/00 ,  H04W52/02

CPC classification number: H04W56/0045 ,  H04W52/0212 ,  Y02D70/1262 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/21 ,  Y02D70/22

Abstract: A method for transmitting machine type communication (MTC) data and an apparatus therefor are disclosed. A method for transmitting data in a MTC device located in a mobile communication system may comprise estimating an absolute position of the MTC device, receiving an awake message, extracting downlink synchronization information and absolute positional information of a base station included in the awake message, estimating a transmission delay time between the MTC device and the base station, and transmitting signal to the base station based on the transmission delay time and the downlink synchronization information. Therefore, a problem of uplink interferences between terminals and a base station due to a MTC device, which can be generated in supporting MTC services for a conventional cellular communication system, may be resolved.

Abstract translation: 公开了一种用于发送机器类型通信（MTC）数据的方法及其装置。 一种用于在位于移动通信系统中的MTC设备中发送数据的方法可以包括估计MTC设备的绝对位置，接收唤醒消息，提取下行链路同步信息和包括在唤醒消息中的基站的绝对位置信息，估计 MTC设备和基站之间的传输延迟时间，以及基于传输延迟时间和下行链路同步信息向基站发送信号。 因此，可以解决由常规蜂窝通信系统支持MTC服务而产生的MTC设备的终端与基站之间的上行链路干扰的问题。