Secure Data Delivery with Linear Network Coding for Multiple Multicasts with Multiple Streams in Internet of Things

Table 3

The meanings of objectives and constraints.

Constraint	Meaning
Objective(2)	Maximize the total SWT
Constraint(3)	The transmission rate of any data stream transmitted in the network must be greater than 0
Constraints(4)–(7)	In network topology, nodes need to follow the network flow constraints
Constraint(8)	For multicast , the actual flow rate passing through any link in the network is no less than the flow rate passing through the link to any destination node because the coded data packets can be useful for all the destinations in with LNC
Constraint(9)	The data flow of multicast passing through any malicious node in the network should meet the requirements of WS
Constraint(10)	The sum of all data flows passing through the link should be no greater than the bandwidth capacity of the link
Constraints(11)–(13)	Ranges of variables