公开(公告)号：US09967908B2

公开(公告)日：2018-05-08

申请号：US14890313

申请日：2013-05-10

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Quan-Wen Du ,  Yueh Ching Chung ,  Yu-Yang Zheng

IPC: H04W76/02 ,  H04W74/00 ,  H04W74/08 ,  H04W4/06 ,  H04W84/08

CPC classification number: H04W76/14 ,  H04W4/06 ,  H04W74/00 ,  H04W74/0808 ,  H04W84/08

Abstract: In a direct mode two-way radio frequency communications system having a plurality of direct mode traffic channels, a first direct mode subscriber unit (DMSU) monitors a preconfigured direct mode control channel (DMCC), the DMCC being a channel that is monitored by all DMSUs that are idle in the system, and which is time divided into slots including traffic channel status slots (TCSSs), each TCSS associated with another physical direct mode traffic channel (DMTC) in the communication system. Responsive to detecting a request to initiate a new call, the DMSU selects a first DMTC on which to transmit the call, transmits during the next TCSS of the DMCC associated with the selected DMTC a header indicating the first DMSU's intention to transmit a new call on the selected DMTC, and subsequently switches to the selected DMTC and transmits the new call.

公开(公告)号：US09654939B2

公开(公告)日：2017-05-16

申请号：US15030896

申请日：2013-12-12

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： Quan-Wen Du ,  Yong Huang ,  Yu-Yang Zheng

IPC: H04H20/71 ,  H04W4/10 ,  H04W4/06

CPC classification number: H04W4/10 ,  H04W4/06

Abstract: A radio receives a call including a call include bitmask (CIB). The radio retrieves a call include list (CIL) that, for each bit position in the CIB, maps the bit position to one of a radio identifier, a talk group identifier, and a sub-CIL. The radio determines that one bit position in the CIB is set to a value indicating that a radio associated with a radio identifier mapped to the bit position in the CIB via the CIL or to a talk group identifier mapped to the bit position in the CIB via the CIL are to be included in the call. The radio matches its identifier to the radio identifier mapped to the bit position or matches a talk group to which it subscribes to the talk group identifier mapped to the at least one bit position and unmutes the call.

公开(公告)号：US20160150579A1

公开(公告)日：2016-05-26

申请号：US14890313

申请日：2013-05-10

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Quan-Wen Du ,  Yueh Ching Chung ,  Yu-Yang Zheng

IPC: H04W76/02 ,  H04W4/06 ,  H04W74/08

CPC classification number: H04W76/14 ,  H04W4/06 ,  H04W74/00 ,  H04W74/0808 ,  H04W84/08

Abstract: In a direct mode two-way radio frequency communications system having a plurality of direct mode traffic channels, a first direct mode subscriber unit (DMSU) monitors a preconfigured direct mode control channel (DMCC), the DMCC being a channel that is monitored by all DMSUs that are idle in the system, and which is time divided into slots including traffic channel status slots (TCSSs), each TCSS associated with another physical direct mode traffic channel (DMTC) in the communication system. Responsive to detecting a request to initiate a new call, the DMSU selects a first DMTC on which to transmit the call, transmits during the next TCSS of the DMCC associated with the selected DMTC a header indicating the first DMSU's intention to transmit a new call on the selected DMTC, and subsequently switches to the selected DMTC and transmits the new call.

Abstract translation: 在具有多个直接模式业务信道的直接模式双向射频通信系统中，第一直接模式用户单元（DMSU）监视预配置的直接模式控制信道（DMCC），DMCC是被全部监控的信道 在系统中空闲的DMSU，其被划分为时隙，包括业务信道状态时隙（TCSS），与通信系统中的另一物理直接业务信道（DMTC）相关联的每个TCSS。 响应于检测到发起新呼叫的请求，DMSU选择在其上发送呼叫的第一DMTC，在与所选DMTC相关联的DMCC的下一个TCSS期间发送指示第一个DMSU发送新呼叫的意图的报头 所选择的DMTC，然后切换到所选择的DMTC并发送新的呼叫。