Key Updating Methods for Combinatorial Design Based Key Management Schemes

Table 7

The communication overhead of the two methods.

	id	RN	Poly
The sensor node in the first method	2(𝑚^3+1)(𝑚+1)	(𝑚^3+1)(𝑚+1)	0
The sensor node in the second method	𝑚+1	0	𝑚+1