公开(公告)号：US20140269521A1

公开(公告)日：2014-09-18

申请号：US13800424

申请日：2013-03-13

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： GEORGE R. ECONOMY ,  ROGER M. VILMUR

IPC: H04L5/00

CPC classification number: H04W48/16

Abstract: A BS tunes its receiver to the hailing channel and monitors for a hailing signal. A subscriber unit (SU) scans a first set of control channels for a control signal transmitted by a trunked base station (BS) in a trunked radio system. In response to failing to locate a control signal on any one of the first set of control channels, the SU tunes its transmitter to a hailing channel and transmits a hailing signal. In response to receiving a hailing signal from a SU, the BS tunes to a transmit portion of a trunked control channel and transmits a control signal. And the BS subsequently tunes to a receive portion of the trunked control channel and monitors for a registration response. Subsequently, the SU scans a second set of control channels for a control signal transmitted by a BS in the system.

Abstract translation: BS将其接收机调谐到呼叫信道并监视呼叫信号。 用户单元（SU）扫描第一组控制信道，用于由集群无线电系统中的集群基站（BS）发送的控制信号。 响应于在第一组控制信道中的任何一个上找不到控制信号，SU将其发射机调谐到通道并发送呼叫信号。 响应于从SU接收到来信信号，BS调谐到集群控制信道的发送部分并发送控制信号。 并且BS随后调谐到集群控制信道的接收部分并监视注册响应。 随后，SU扫描第二组控制信道，用于由系统中的BS发送的控制信号。