Modeling and sensitivity analysis of reservation based USAP hard scheduling unicast traffic in MANETs

Authors:
Senni Perumal;Vahid Tabatabaee;John S. Baras;Charles J. Graff;David G. Yee
Affiliations:
AIMS Inc., Rockville, Maryland;Institute for Systems Research, University of Maryland, College Park, Maryland;AIMS Inc., Rockville, Maryland;US Army CERDEC S&TCD, Fort Monmouth, NJ;US Army CERDEC S&TCD, Fort Monmouth, NJ
Venue:
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
Year:
2009

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Abstract

In this paper, we develop and evaluate models to estimate and optimize various performance metrics for unicast traffic using the hard scheduling (virtual circuit connection-oriented) mode of the reservation based protocol USAP in mobile ad-hoc wireless networks (MANETs). USAP (Unifying Slot Assignment Protocol) is a dynamic distributed resource allocation protocol for MANETs. We model USAP hard scheduling mode using loss network models along with reduced link capacity that couple physical, MAC and routing layers effects. The key effect of multiuser interference on a link is modeled via reduced link capacity where the effects of transmissions and receptions in the link neighborhood are modeled using USAP reservation rules. We compare our results with simulation and obtain good results using our loss network models but with reduced link capacity distribution obtained by simulation. We also compute the throughput sensitivities with respect to network parameters and use these sensitivities to improve network performance.