A Vehicular Service-Oriented Dynamical Routing Searching Algorithm in Software-Defined BusNet

Table 1

Explanation of variables and functions in data filtering.

Variable/function	Explanation
	Message of current searching period.
	Messages of last searching period.
	A flag message expresses that current message is sent by a new bus node.
	Content of packet is the same as that of packet .
	Discard current message.
	Update message in database.
	Add message to database.