Inventor
DU QUAN-WEN
CN6 patents
Patents
6 patentsUS10149110B2Dec 4, 2018
Method and system for tracking a plurality of communication devices
MOTOROLA SOLUTIONS INC8 citations75
US10484840B2Nov 19, 2019
Method and system for grouping communications between mobile communication devices
MOTOROLA SOLUTIONS INC0 citations42
US10083359B2Sep 25, 2018
Method and device for incident situation prediction
MOTOROLA SOLUTIONS INC1 citations42
US9654939B2May 16, 2017
Apparatus and method for incorporating multiple talk groups in a single call
MOTOROLA SOLUTIONS INC0 citations34
US9967908B2May 8, 2018
Method and device for reusing channel frequencies in direct mode
MOTOROLA SOLUTIONS INC0 citations33
US9843906B2Dec 12, 2017
Apparatus and method for retrieving group messages
MOTOROLA SOLUTIONS INC0 citations33