公开(公告)号：US20130083779A1

公开(公告)日：2013-04-04

申请号：US13630700

申请日：2012-09-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jae Young AHN ,  Choong Il YEH ,  Kyoung Seok LEE

IPC: H04W72/04

CPC classification number: H04W72/04 ,  H04W8/005 ,  H04W72/0486 ,  H04W76/14

Abstract: Disclosed is device-to-device communication based on a cellular communication network. A method of operating a terminal capable of supporting D2D (device to device) communication based on a cellular communication network may include: determining whether to perform central control D2D communication or distributed control D2D communication; and performing the distributed control D2D communication, or requesting a setting for the central control D2D communication to a base station on the basis of the determination. With the D2D communication based on the cellular communication network, the cellular communication, the central control D2D communication, or the distributed control D2D communication may flexibly and selectively operate in the cellular network.

Abstract translation: 公开了基于蜂窝通信网络的设备到设备通信。 一种能够支持基于蜂窝通信网络的D2D（设备到设备）通信的终端的方法可以包括：确定是否执行中央控制D2D通信或分布式控制D2D通信; 并且基于该确定来执行分布式控制D2D通信，或请求对基站的中央控制D2D通信的设置。 利用基于蜂窝通信网络的D2D通信，蜂窝通信，中央控制D2D通信或分布式控制D2D通信可以在蜂窝网络中灵活选择地操作。

公开(公告)号：US20190082456A1

公开(公告)日：2019-03-14

申请号：US16124368

申请日：2018-09-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Cheul Soon KIM ,  Sung Hyun MOON ,  Choong Il YEH ,  Jung Hoon LEE

IPC: H04W72/12 ,  H04L5/00

Abstract: A method of transmitting a grant-free uplink data channel (physical uplink shared channel (PUSCH)) (GF-PUSCH), performed in a terminal, includes determining a resource (GF-PUSCH resource) for transmission of the GF-PUSCH and an identifier (DM-RS ID) of a demodulation reference signal (DM-RS) included in the GF-PUSCH; when an uplink traffic arrives, encoding the uplink traffic into a transport block (TB); generating the DM-RS based on the DM-RS ID, and transmitting the GF-PUSCH including the TB and the DM-RS to a base station through the GF-PUSCH resource; and receiving, from the base station, a group hybrid automatic repeat request acknowledgement (HARQ-ACK) information in which ACK or negative acknowledgement (ACK/NACK) information for the GF-PUSCH of the terminal and ACK/NACK information for at least one GF-PUSCH of at least one other terminal are multiplexed, through a downlink control information (DCI).

公开(公告)号：US20140192768A1

公开(公告)日：2014-07-10

申请号：US14146942

申请日：2014-01-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Choong Il YEH ,  Jae Young AHN

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/06 ,  H04B7/024 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/0639 ,  H04B7/065

Abstract: Disclosed is a method for transmitting radio frequency signals. In the method according to the present invention, a plurality of antenna groups may be arranged for achieving array gain and multiplexing gain at the same time, and the plurality of antenna groups are located far from each other so that they have no correlation, and antennas of the same group are located adjacent to each other so that they have correlation. Accordingly, system capacity as well as capacity of data channel and control channel may be significantly increased through mitigation of inter-cell interference and enhancement of cell edge performance.

Abstract translation: 公开了一种用于发射射频信号的方法。 在根据本发明的方法中，可以布置多个天线组以便同时实现阵列增益和复用增益，并且多个天线组彼此远离，使得它们没有相关性，并且天线 相同组的位置彼此相邻，使得它们具有相关性。 因此，可以通过缓解小区间干扰和小区边缘性能的增强来显着增加系统容量以及数据信道和控制信道的容量。