Performance Improvement Design of Bluetooth Low Energy-Based Wireless Indoor Positioning Systems

Table 6

Recommended value for the number of required RNs for traditional IPSs.

Performance requirements	Building M (1,600 m^2)			Building L (3,600 m^2)
	Proximity	Trilateration	Scene analysis	Proximity	Trilateration	Scene analysis
Error dis.  ≤ 7 m (fair level)	7	N/A	N/A	9	N/A	N/A
Error dis.  ≤ 6 m	9	N/A	N/A	13	N/A	N/A
Error dis.  ≤ 5 m (medium level)	12	11	28 (Gf = 4)	22	20	29 (Gf = 4)
Error dis.  ≤ 4 m	20	15	23 (Gf = 3)	36	25	30 (Gf = 3)
Error dis.  ≤ 3 m (good level)	37	27	22 (Gf = 2)	64	42	30 (Gf = 2)
Error dis.  ≤ 2 m	—	50+	—	—	70+	—