Table 7 shows ETX and end-to-end Delay improvement ratios between the proposed SPEA and the routing protocols (DSR and HTLC-MeDSR) for scenario 1 and scenario 2. As can be seen, the proposed SPEA is 2.2 and 2.15 times better in terms of ETX than HTLC-MeDSR for scenarios 1 and 2 respectively. In terms of end-to-end delay, the proposed SPEA is 26.07 and 51.95 times better than DSR, and 4.39 and 3.3 times better than HTLC-MeDSR, for scenarios 1 and 2 respectively.