OPERATING BROADBAND PUBLIC SAFETY MOBILE COMMUNICATION

摘要

A method includes providing a broadband public safety network PSN that includes at least a first MS1 and a second MS2 mobile device and a first coverage area; and providing a broadband mobile communication network CN including a second coverage area 104. The method includes detecting the MS1 and MS2 mobile devices are residing out of the first coverage area and residing in the second coverage area 104. Then the MS1 and MS2 mobile devices are starting to operate in a Device to Device mode 204. The method further includes defining a group including the MS1 and MS2 mobile devices that are communicating in the Device to Device mode. The method includes determining, by using a selection mechanism including one or several timers, which of the MS1 and MS2 mobile devices acts as a controlling mobile device for the group 202.