Mobile Device Based Dynamic Key Management Protocols for Wireless Sensor Networks

Table 2

The communication cost of the proposed scheme.

Phase	Rounds	Communication cost	Transmission time (ms)
			3.6 Mbps	1 Mbps
Registration phase; (offline, as Figure 2)	3	+ + +	0.092	0.332
Communication phase (base station and cluster node, as Figure 3)	3	+	0.038	0.136
Communication phase (mobile user, cluster node, and base station, as Figure 4)	6	+	0.093	0.336
Total	+ + +		0.223	0.804