research unit 1

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Type of publication:Article
Entered by:ichatz
TitleOn the effect of user mobility and density on the performance of ad-hoc mobile networks
Bibtex cite IDRACTI-RU1-2004-27
Journal Journal of Wireless Communications and Mobile Computing
Year published 2004
Month September
Volume 4
Number 6
Pages 336-341
DOI 10.1109/icon.2004.1409164
Keywords Mobile Adhoc Networks
In this paper we demonstrate the significant impact of (a) the mobility rate and (b) the user density on the performance of routing protocols in ad-hoc mobile networks. In particular, we study the effect of these parameters on two different approaches for designing routing protocols: (a) the route creation and maintenance approach and (b) the "support" approach, that forces few hosts to move acting as "helpers" for message delivery. We study one representative protocol for each approach, i.e., AODV for the first approach and RUNNERS for the second. We have implemented the two protocols and performed a large scale and detailed simulation study of their performance. For the first time, we study AODV (and RUNNERS) in the 3D case. The main findings are: the AODV protocol behaves well in networks of high user density and low mobility rate, while its performance drops for sparse networks of highly mobile users. On the other hand, the RUNNERS protocol seems to tolerate well (and in fact benefit from) high mobility rates and low densities. Thus, we are able to partially answer an important conjecture of [Chatzigiannakis, I et al. 2003].
Chatzigiannakis, Ioannis
Kaltsa, Elena
Nikoletseas, Sotiris
Publication ID255