PB: A Message Transmission Method Based on Area Layer Division in UAV Networks

Table 1

Symbol description.

Symbol	Value
	searching UAV in AL
	AL
	The number of searching UAVs in
	The total number of messages passing on all
	Average number of all in
	The popularity balance of searching UAVs in
	Total number of messages collected by
	Total number of messages received by
	The number of messages collected per second for each searching UAV (s/sec)
	Task duration (s)
	Probability of message transmission between UAV and
	The set of searching UAVs in
	The set of all ferry UAVs
	The set of all searching UAVs