Research on Artificial Spider Web Model for Farmland Wireless Sensor Network

Table 5

Simulation results of tree network.

Number of layers	Number of remaining nodes	Average shortest transmission time (s)	Invulnerability indicator
1	7	0.5333	0
	6	0.5333	0
	5	0.5333	0
	4	0.5333	0
	3	0.5333	0
	2	0.5333	0
	1	0.5333	0
2	15	0.5304	0.005
	14	0.5273	0.011
	13	0.5238	0.018
	12	0.5200	0.026
	11	0.5158	0.034
	10	0.5111	0.043
	9	0.5059	0.054
	8	0.5000	0.067
	7	0.4933	0.081
	6	0.4857	0.098
	5	0.4769	0.118
	4	0.4667	0.143
	3	0.4545	0.173
	2	0.4400	0.212
	1	0.4222	0.263