Route discovery in infrastructure based network is an important problem. Normally, route selection or route discovery is done based on the shortest path principle. In infrastructure based networks، a number of issues for route discovery need to be ad
dressed as the packet flow are prone to errors making the routing operation failure. Reliability, for example، is an important issue for route discovery. Ensuring Quality of Service (QoS) is important and is to be taken care while forwarding a packet flow. In this paper، a model for route discovery in infrastructure based networks using GA is being proposed. Out of many paths available from the gateway of the network to the final destination, the one is selected which satisfies the desired QoS. Two important QoS parameters، path loss and processing time at the router (Base Station), have been considered. The experimental results for both the QoS parameters reveal the efficacy of the model.
We present in this thesis a new structure that incorporates SDN with Vanets, and we make a meticulous study of routing mechanisms and their effects on security aspects. We also present a new security system that depends on public key infrastructure,
and finally we demonstrate how to benefit from SDN in facing several security attacks and preaches, which are common in traditional Vanets, through number of security algorithms which allow deploying intrusion detection systems as a step towards self-healing and self-configuration system.
Today, MANET networks have attracted the attention of many researchers in the
field of communications and networks because of the ease of establishing such networks
and their wide spread in the various scientific and applied fields. The researchers
have
proposed many routing protocols in these networks. This is because the goal of the
development process is to make these networks more secure and stable because they are
highly vulnerable to penetration by any other node located in the perimeter of the network
because the security factors are weak.
These protocols are categorized according to its strategy to three types are the
proactive class, which relies on the transmission of control messages over the network to
update the routes between any two nodes, and the reactive class, which depends on
discovering the route when needed, without broadcasting of control messages across
network , And the hybrid type, which combines the two classes, that divides the network
into clusters where the nodes interconnections within the cluster depends on the interactive
method, while the transmission between two nodes that belong to different clusters is
depend on proactive method.
In this research, the MANET network was simulated by subjecting the packet
generation process to an exponential probability distribution with the change of the value
of the (α) parameter in order to obtain the best performance when the number of nodes
changed taking into account the parameters of Throughput, load and delay.
