公开(公告)号：US09480004B2

公开(公告)日：2016-10-25

申请号：US14271872

申请日：2014-05-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Soojung Jung ,  Seungkwon Cho ,  Hyung Jin Kim ,  Seokki Kim ,  Hyun Lee ,  Sung Cheol Chang

IPC: H04W48/12 ,  H04W84/18 ,  H04L12/24 ,  H04W48/16 ,  H04L12/751

CPC classification number: H04W48/12 ,  H04L41/0806 ,  H04L45/02 ,  H04W48/16 ,  H04W84/18

Abstract: A discovery method is provided by a device in a D2D direction communication. The device selects a discovery resource unit from among discovery resource units which are not being used after listening during one or more discovery resource periods. The device transmits a first discovery signal through the selected discovery resource unit in a broadcasting manner at a first discovery resource period, and transmits a second discovery signal through the selected discovery resource unit in a query-based manner at a second discovery resource period.

Abstract translation: 发现方法由D2D方向通信中的设备提供。 设备从在一个或多个发现资源周期内的监听之后未被使用的发现资源单元中选择发现资源单元。 设备在第一发现资源周期以广播方式通过所选择的发现资源单元发送第一发现信号，并且在第二发现资源周期以基于查询的方式通过所选择的发现资源单元发送第二发现信号。

公开(公告)号：US09277518B2

公开(公告)日：2016-03-01

申请号：US14165017

申请日：2014-01-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyung Jin Kim ,  Chanho Yoon ,  Soojung Jung ,  Sung Kyung Kim ,  Seungkwon Cho ,  Sung Cheol Chang ,  DongSeung Kwon

IPC: H04W56/00 ,  H04W4/00

CPC classification number: H04W56/0025 ,  H04W4/70 ,  H04W56/002

Abstract: A synchronization method by a device is provided in a device-to-device direct communication. The device receives synchronization signals from a plurality of other devices at a current frame, and estimates a synchronization time at a next frame based on the synchronization signals received from the other devices.

Abstract translation: 在设备到设备的直接通信中提供了设备的同步方法。 设备在当前帧从多个其他设备接收同步信号，并且基于从其他设备接收到的同步信号来估计下一帧的同步时间。