Distributed Controller Placement in Software-Defined Networks with Consistency and Interoperability Problems

Table 9

Comparison of deployment environment aware controller placement.

Reference	Environment	Objective metrics							Traffic	Problem formulation	Solution approach
		Failure rate	Throughput	Latency	No of controllers	Load	Loss	RT
[164–166]	LTE/5 G	—	—	—	√	—	—	—	Voice, videos	Bin packing MIQCP	Greedy heuristics
[167]		—	—	—	—	√	—	—	Dynamic	ILP, random Waypoint	Nash game
[124, 168, 169]	LTE/5 G Wi-fi	—	—	—	√	—	—	√		MILP	2-stage stochastic
[170, 171]	Wi-Fi	—	√	—	—	—	—	—		LP	Heuristic
[172]	WSN/BAN	—	—	—	—	—	—	—		LP	Analytical
[173]	VANET	—	—	√	—	—	—	—		Mathematical	Game theory, GA
[174]	LTE/5 G	—		√	—	—	—	—			Use cases
[175]	WSN/BAN	—	—	—	—	—	—	—	Static	Experiments	Proof of concept
[176, 177]		—	√	√	—	—	—	—	Dynamic	MAP	Experiment
[178, 179]	Wi-Fi	√	√	√	—	—	—	—		MOOP, LP	SAGA heuristics
[180, 181]	WSN/BAN	—	—	√	—	—	√	—		Mathematical	Sector divide routing
[25]	WSN/BAN	—-	—	√	—	—	—	—		Mathematical	Greedy
[182]	LTE/5 G Wi-Fi	—	—	√	—	—	—	—		—	PoC
[183]	LTE/5 G	—	√	√	—	—	—	—		Comparative	PoC
[184]	LTE/5 G Wi-Fi	√	√	—	—	—	—	—		Stochastic K-Median	SA, ray-shooting

PoC: proof of concept, SA: simulated annealing.