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Title: Modeling and Performance Evaluation og dynamic routing over MANET using NS-2.35


Modeling and Performance Evaluation og dynamic routing over MANET using NS-2.35
Author Name:
Kamal,Manju,Sudesh kumar
Wireless networks are now becoming an important element in mobile networks. These networks can be ad-hoc in style, and can allow for multiple networks to connect together. The ad-hoc natures of these networks allow nodes to connect to others and act as routers and forwarding nodes between interconnected domains. Routing protocols provide the base for the routing of data between these wireless nodes. Although there are many routing protocols at present there is no definitive routing protocol in place that handles the potentially dynamic attributes of a wireless ad-hoc network, along with the need to transfer data in such an environment. This thesis describes the identification of potential problem areas within these routing protocols. Route acquisition, expiration and maintenance methods used by the routing protocol are all factors that contribute to the overall performance. Another major factor that contributes to routing protocol performance is when wireless nodes move out of the coverage area of other nodes and thus lose connection, or the opposite, where other wireless nodes join the network while on the move and require a dynamic route to a destination; this is defined as the mobility factor. The main models that are applicable in real-world wireless topologies are designed in this report to establish how these factors and varying metrics affect the routing protocol in different situations. The multimedia model shows how well the routing protocol can handle real-world traffic like streaming video and audio, and the need to try and guarantee Quality of Service, QoS, for this type of data. The circular model attempts to address the potential problems with ad-hoc routing where there is only one destination node, mirroring a real life hotspot scenario, where receivers on buildings, for example, can act as a gateway to the Internet for any number of wireless nodes. Lastly, the dynamic model attempts to address problems with an extremely dynamic topology where nodes leave and join the network continually, putting extreme strain on the routing protocol, and network overheads.