公开(公告)号：WO2016053656A1

公开(公告)日：2016-04-07

申请号：PCT/US2015/051126

申请日：2015-09-21

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： RUELKE, Charles R., ,  CORKE, Robert J., ,  LOGALBO, Bob,

IPC: H04W84/08 ,  H04W76/00

CPC classification number: H04W4/08 ,  H04L5/0016 ,  H04W72/048 ,  H04W76/14 ,  H04W76/45 ,  H04W84/08

Abstract: A method and system for direct mode operation (DMO) of a talkgroup enables device to device (D2D) DMO operation leveraged from a Land Mobile Radio (LMR) system. The method includes scanning at a radio receiver a defined radio frequency spectrum; receiving at the radio receiver in the defined radio frequency spectrum a wake-up signal; identifying a talkgroup identifier in the wake-up signal, wherein the talkgroup identifier corresponds to a talkgroup being monitored by the radio receiver; in response to identifying the talkgroup identifier, decoding code sequences included in the wake-up signal; identifying in at least one of the code sequences both a center frequency and a transmission bandwidth of the DMO transmission; and tuning the radio receiver to receive the DMO transmission at the center frequency and transmission bandwidth.

Abstract translation: 通话组的直接模式操作（DMO）的方法和系统使得能够从陆地移动无线电（LMR）系统利用的设备到设备（D2D）DMO操作。 该方法包括在无线电接收机处扫描定义的射频频谱; 在定义的无线电频谱的无线电接收机处接收唤醒信号; 识别所述唤醒信号中的通话组标识符，其中所述通话组标识符对应于由所述无线电接收器监视的通话组; 响应于识别所述通话组标识符，解码包括在所述唤醒信号中的代码序列; 在DMO传输的中心频率和传输带宽中的至少一个码序列中识别; 并调谐无线电接收机以在中心频率和传输带宽上接收DMO传输。