Using Variable Data Rate in Mobile Ad Hoc Networks Supporting Delay Sensitive Traffic (Anvandande av Variabel Datatakt foer Foerdroejningskaenslig Trafik i Mobila Ad Hoc-Naet).

摘要

In wireless ad hoc networking efficient resource management is crucial in order to deal with delay sensitive traffic. This paper results from studying such traffic in a mobile scenario and focuses on the gains that can be obtained by variable data rate. We study this from several points of view, the effect of lower data rates, the routing metric, and delayed routing update. The results show that the greatest benefit with adding lower data rate links in the increased connectivity in the network. Lower data rates also give a better support when the routing information in the network is delayed. Further, the choice of routing metric is also important in order to be able to fully utilize a large range of data rates.