公开(公告)号：US20170156039A1

公开(公告)日：2017-06-01

申请号：US15320000

申请日：2014-07-10

Applicant: Motorola Solutions, Inc.

Inventor： Kang-kai ZHAO ,  Da-jun CHEN ,  Yong LI ,  Yong TIAN ,  Wu YANG

IPC: H04W4/10 ,  H04W74/08

CPC classification number: H04W4/10 ,  H04W74/0808 ,  H04W84/08

Abstract: A mobile radio has selectable transmit and receive channels, and is in a talkgroup that has a primary channel and multiple auxiliary channels. The mobile radio receives a broadcast-start command, and responsively selects its transmit channel to be the primary channel (if available) or an inactive auxiliary channel (if the primary channel is not available). The mobile radio receives user media via its user interface, and transmits that received user media on its selected transmit channel. The mobile radio scans for an auxiliary channel transitioning from inactive to active. Responsive to detecting such a transition, the mobile radio selects that auxiliary channel as its receive channel. The mobile radio mixes inbound media received on its selected receive channel with user media received via its user interface, and transmits the mixed media on its selected transmit channel.

公开(公告)号：US20180206285A1

公开(公告)日：2018-07-19

申请号：US15525020

申请日：2016-05-13

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Yong TIAN ,  Da-jun CHEN ,  Xun FEI ,  Dong ZHAO ,  Kang-Kai ZHAO

IPC: H04W76/19

CPC classification number: H04W76/19 ,  H04M11/04 ,  H04W36/00 ,  H04W36/03

Abstract: A communications system and method of operation thereof. The communications system includes a communication network, a plurality of subscriber units and accessories, and a communications server. Each of the plurality of accessories are associated with and linked to one of the of subscriber units by a wireless connection. The communications server communicates with the plurality of subscriber units via the communication network, and is configured to obtain and maintain a plurality of data on each of the plurality of subscriber units, and generate a backup list identifying secondary subscriber units to which each of the plurality of accessories can link. Upon detecting a condition where communication drops below a desired level of service, the communication server is configured to identify a secondary subscriber unit from the first accessory's backup list and instruct the secondary subscriber unit to link with the first accessory.