公开(公告)号：US09179269B2

公开(公告)日：2015-11-03

申请号：US14025305

申请日：2013-09-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Lee ,  Mi Young Yun ,  Seok Ki Kim ,  Won-Ik Kim ,  Chul Sik Yoon ,  Sung Cheol Chang

IPC: H04B7/00 ,  H04W4/10 ,  H04W74/08 ,  H04W56/00

CPC classification number: H04W4/10 ,  H04W56/005 ,  H04W74/0841

Abstract: A method and apparatus for transmitting a synchronization signal in a talk-around direct communication network is provided. The method includes: determining one of a plurality of second windows included in a first window as a synchronization reception window; selecting one of a plurality of synchronization slots included in the second windows as a first synchronization slot; transmitting a first synchronization signal through the first synchronization slot included in the second windows, excluding the synchronization reception window; detecting a second synchronization signal transmitted from other terminals using the first synchronization slot included in the synchronization reception window; and determining that a collision from amongst the synchronization signals has occurred based on the detection result.

Abstract translation: 提供了一种用于在通话对话直接通信网络中发送同步信号的方法和装置。 该方法包括：将包括在第一窗口中的多个第二窗口中的一个确定为同步接收窗口; 选择包括在第二窗口中的多个同步槽中的一个作为第一同步槽; 通过除了同步接收窗口之外的包括在第二窗口中的第一同步时隙发送第一同步信号; 使用包括在同步接收窗口中的第一同步时隙检测从其他终端发送的第二同步信号; 并且基于检测结果确定已经发生了来自同步信号之间的冲突。