probability, battery lifetime, $n_i$, and $P_i$. The $x$-axis in Fig. \[oo2\] and Fig. \[oo1\] represents $P_1$ for circle-marked curves, and $n_1$ for cross-marked curves. In these figures, Sc1 and Sc2 differ in density of type-2 devices, which is 2.4 in Sc1, and 1.2 in Sc2. One observes in Fig. \[oo2\] that battery lifetime is a quasi-concave function of both $P_i$ and $n_i$. Furthermore, in Sc1, where density of nodes is higher than Sc2, battery lifetime decreases significantly by increase in the number of replica transmissions. In both scenarios, we see that the energy-optimized operation strategy for type-1 devices is to send 2 replicas per data packet to maximize their battery lifetimes. Fig. \[oo1\] represents the success probability for type-1 and type-2 traffic as a function of $n_1$ and $P_1$. One sees that success probability for type-1 increases to a point beyond which, the resulting interference from extra transmitted packets starts deteriorating the performance. On the other hand, increase in the transmit power for type-1 devices, increases the success probability for this type and severely decreases the performance of type-2 devices. It is also worthy to note that in Fig. \[oo1\], success probability increases in $n_1$ till $n_1=4$, however, from the 