Inventor
DU QUANWEN
CN2 patents
Patents
2 patentsUS10419894B2Sep 17, 2019
Methods and systems for maintaining a required participation level for a plurality of communication devices assigned to a task group
MOTOROLA SOLUTIONS INC1 citations53
US10924908B2Feb 16, 2021
Method, system, and device for transmitting an emergency message
MOTOROLA SOLUTIONS INC0 citations50