A Security Scheme of 5G Ultradense Network Based on the Implicit Certificate

Table 2

Frequency of handover.

Simulation scene (320 320 m^2)	UE’s speed (km/h)	Handover (times/second/user)
Scene 1: APs randomly deployed, L2 centralized	3	0.731
	30	1.421
	60	2.018
Scene 2: APs randomly deployed, L1 centralized	3	0.771
	30	1.425
	60	2.034
Scene 3: APs regularly deployed, L2 centralized	3	0.579
	30	1.228
	60	1.796