Handoff Prediction by Mobility Characteristics in Wireless Broadband Networks

Authors:
Li-Liann Lu;Jean-Lien C. Wu
Affiliations:
National Taiwan University of Science and Technology;National Taiwan University of Science and Technology
Venue:
WOWMOM '05 Proceedings of the Sixth IEEE International Symposium on World of Wireless Mobile and Multimedia Networks
Year:
2005

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Abstract

This paper proposes the mobility-aided resource reservation (MARR) with admission control (AC) to provide better usage of scarce resource in wireless broadband networks. The area of cell is divided into: the outer ring and the inner ring. A target cell is predicted by extrapolating the trajectory of MSs. In order to reduce signaling overhead, bandwidth is reserved only in the target cell as MSs move into the outer ring and leave the serving base station (BS). The amount of bandwidth to be reserved is dynamically adjusted according to the instantaneous variation of mobility ratio, location, and direction of MSs. Two scenarios of the MARR scheme are investigated by OPNET simulation and compared by considering the mobility ratio threshold in the calculation of the direction weighting. The simulation results show that employing the MARR scheme can indeed reduce connection dropping probability, and make better bandwidth utilization when appropriate parameters are chosen.