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Seeking for an Optimal Route in IEEE 802.11e Ad-Hoc Networks

Ferro, J.M. ; Cabral, O. ; Velez, F. J.

Seeking for an Optimal Route in IEEE 802.11e Ad-Hoc Networks, Proc IEEE Vehicular Technology Conf. - VTC-Fall, Anchorage, United States, Vol. -, pp. - - -, September, 2009.

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Abstract
In this paper we present several different approaches to a routing calculation in an ad-hoc network. By using different weights for each link, each algorithm generates a different path, with its own number of hops and maximum throughput. Tests were performed in our own IEEE 802.11e simulator and the results allow to conclude that the cross-layer approach has advantages over the traditional one. In fact, our proposals delivers up to three times more packets than the standard one, whilst diminishing the end-to-end delay. Results show that the proposal which privileges users with a baud rate near the maximum possible achieves better performance than the others. A baud rate near the maximum corresponds to links with the highest signal to interference-plus-noise ratio. The proposed technique privileges the use of paths with a larger number of hops, and reduces the packet end-to-end delay.