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Wireless Ad Hoc and Sensor Networks

Wireless Ad Hoc and Sensor Networks

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428 <strong>Wireless</strong> <strong>Ad</strong> <strong>Hoc</strong> <strong>and</strong> <strong>Sensor</strong> <strong>Networks</strong>ProblemsSection 8.5Problem 8.5.1: Redo Example 8.5.1 for a 300-node network, using thesame parameters defined in the example. Compare the resultsobtained from OEDR, OLSR <strong>and</strong> AODV.Problem 8.5.2: Redo Example 8.5.2 by varying network size consistingof 300 nodes to 3000, with the node increment value of 150. Discussresults using average delay, throughput over delay, energy <strong>and</strong>delay product, <strong>and</strong> contention time with number of nodes.Section 8.8Problem 8.8.1: For topology presented in Figure 8.20, calculate thenumber of routing messages transmitted during route discoveryfor OEDSR protocol.Problem 8.8.2: For topology presented in Figure 8.20, calculate thenumber of routing messages transmitted by the AODV protocol(the source floods the whole network with route request messagewhile assuring only single transmission by each node; then theroute replay message is passed from destination to source alongthe same route as for OEDSR in Problem 8.8.1).Problem 8.8.3: Derive a general equation for the number of routingmessages transmitted for the AODV routing scheme. Assume thatall n nodes in the network will be involved in routing. Considerthe number of hops in the final route as a parameter of the equation.Problem 8.8.4: Derive general equation for number of routing messagestransmitted for OEDSR scheme. Assume that for n nodesin the network there will be only fraction, 0 < α < 1, of the nodesinvolved in the routing. This will correspond to a source beinginside the network area. Consider the number of hops in the finalroute as a parameter of the equation.Section 8.9Problem 8.9.1: Redo the Example 8.9.1, with higher node densitynetworks consisting of 300 <strong>and</strong> above.Problem 8.9.2: Repeat Problem 8.9.1, with a mobile BS. Compare theresults with those of Problem 8.9.1.Problem 8.9.3: Redo Example 8.9.4, with node density starting at 300,<strong>and</strong> with an increment of 100 nodes until 3000. Introduce channelfading <strong>and</strong> plot packets dropped, throughput, energy consumed,<strong>and</strong> E2E delay.

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