Qasim Mushtaq, Chunlei An, Koojana Kuladinithi, Andreas Timm-Giel, Carmelita G\"org,
QoS Aware Routing for Wireless Adhoc Networks,
In: Baltic Conference: Advance Topics in Telecommunication, pp. 19-31, August 2008.
Abstract: Routing protocols designed for ad hoc networks enable a node to communicate over a long distance through multi-hops. The available routing protocols always strive to make multi-hop route between the source and the destination through the lowest possible hop count. However, the lower hop count cannot always guarantee the higher throughput if the link quality among the nodes is degrading. In such situations, routes with higher hop count may give better throughput. In this work, standard ad hoc routing has been improved by discovering the paths with better link quality to provide better application performance. The mostly used reactive protocol of AODV ( Ad hoc On-Demand Distance Vector) routing is modified to incorporate link quality when discovering routes as a deciding parameter in addition to a lower hop count. The Quality of Service (QoS) requirements are considered in order to satisfy the user requirements in terms of throughput, packet loss rate, end-to-end delay etc. The proposed protocol, called as QoS AODV (QAODV), is implemented and tested for performance against AODV in a real test-bed setup with mobility. Experiments show improved performance compared to original AODV in terms of throughput and delay.
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