Fault-Tolerant Relay Node Placement in Wireless Sensor Networks for Surveillance of Overhead Transmission Lines

Table 2

Time delay (s).

Data		Zigbee			Cellular
		20K	31.25 K	250K	20 M	50M	1G
Group	4	24.395 3	20.975 2	15.655 2	18.695 2	18.692 0	18.691 3
	5	15.284 4	13.124 5	9.764 4	11.684 4	11.681 9	11.681 3
	6	9.842 6	8.438 6	6.254 6	7.502 6	7.500 5	7.500 1
	7	6.877 2	5.887 2	4.347 2	5.227 2	5.225 4	5.225 0
	8	5.593 2	4.783 3	3.523 3	4.243 3	4.241 6	4.241 3
	9	3.422 8	2.918 8	2.134 9	2.582 9	2.581 6	2.581 3
Double		5.593 2	4.783 3	3.523 3	4.243 3	4.241 6	4.241 3
	10	3.422 8	2.918 8	2.134 9	2.582 9	2.581 6	2.581 3
	12	1.782 5	1.512 4	1.092 4	1.332 4	1.331 5	1.331 3
	14	1.161 0	0.981 0	0.701 0	0.861 0	0.860 2	0.860 0
	16	1.161 0	0.981 0	0.701 0	0.861 0	0.860 2	0.860 0
	18	0.672 1	0.564 1	0.396 0	0.492 0	0.491 4	0.491 3