Gugrajah_Yuvaan_ Ramesh_2003.pdf
Gugrajah_Yuvaan_ Ramesh_2003.pdf
Gugrajah_Yuvaan_ Ramesh_2003.pdf
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Conclusion<br />
Chapter 6<br />
CONCLUSIONS AND FUTURE WORK<br />
6.1. Dissertation Summary<br />
Chapter 6<br />
Ad hoc networks consist of mobile nodes that communicate wirelessly and achieve<br />
peer-level connectivity by means of multihop paths. These networks are therefore<br />
distributed and infrastructureless. The main focus of this dissertation has been on the<br />
performance and evaluation of routing protocols for wireless ad hoc networks. This<br />
work has been prompted by the potential for ad hoc networks to provide ubiquitous<br />
computing and communication. The applications for ad hoc networks vary from<br />
implementation in large-scale military scenarios to small personal area networks for<br />
commercial mobile computing and Internet access. Among the issues that need to be<br />
solved is the provision of adequate distributed and robust routing protocols that are<br />
able to cope with rapidly changing topologies, high error rates and limited power<br />
supplies.<br />
The routing protocols are classified according to the method in which routes are<br />
obtained. Routing protocols that maintain constantly updated tables are referred to<br />
proactive routing protocols, while those that attempt to find routes only when routes<br />
are required are referred to as reactive protocols. Comparative simulations conducted<br />
by various researchers have shown that the reactive protocols are better suited to the<br />
highly mobile environment of ad hoc networks. The proactive protocols are not able<br />
to cope with constantly updating the tables and actually trigger more congestion in<br />
the network. The proactive protocols do have their merits in small networks, but as<br />
the size of the network grows, it becomes unfeasible to maintain global topological<br />
VIews.<br />
6-1