847805.fig.005a
(a) Initialization phase
847805.fig.005b
(b)
847805.fig.005c
(c)
847805.fig.005d
(d)
847805.fig.005e
(e)
847805.fig.005f
(f) stable state
Figure 5: Secrecy transfer process in a heterogeneous network, , , , and .