公开(公告)号：US20170367133A1

公开(公告)日：2017-12-21

申请号：US15401688

申请日：2017-01-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kwon-yeol PARK ,  Chan-young KIM ,  Sang-hyun LEE

IPC: H04W76/02 ,  H04W72/04

CPC classification number: H04W72/04 ,  H04W76/14

Abstract: A communication device performing device-to-device (D2D) communication and an operating method of the communication device are provided. The operating method of the communication device includes receiving a first message, the first message including resources of a direct link for device-to-device (D2D) communication from a base station, receiving a second message, the second message including first information from a counterpart terminal of the D2D communication, the first information related to channel information of a downlink of cellular communication and channel information of the direct link, and selecting one of the cellular communication or the D2D communication as a communication mode with the counterpart terminal, based on channel information of an uplink of the cellular communication and the received first information.