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Wireless Ad Hoc and Sensor Networks

Wireless Ad Hoc and Sensor Networks

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Optimized Energy <strong>and</strong> Delay-Based Routing 39715001000(Meters)500150000500 1000(Meters)(a)15001000(Meters)50000500 1000(Meters)(b)1500FIGURE 8.25Network size: (a) Layout of a 40-node r<strong>and</strong>om network. (b) Layout of a 70-node r<strong>and</strong>omnetwork.256 B, a simulation time of 1 h, two-ray ground propagation model witha path-loss exponent of 4.0. In addition, the transmission powers of allactive nodes are taken as 25 dBm, whereas for the sleep nodes it was setto 5 dBm.In Figure 8.26, the energy consumed for different routing protocols canbe observed. Because the Bellman Ford protocol consumes a radically higheramount of energy than other protocols, the graph is magnified to comparethe performance of OEDSR with the other protocols. On magnifying the

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