Modeling and Analysis of Fast Handoff Algorithms for Microcellular Networks

Authors:
A. E. Leu;B. L. Mark
Affiliations:
-;-
Venue:
MASCOTS '02 Proceedings of the 10th IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems
Year:
2002

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Abstract

In urban microcellular environments, fast handoff algorithmsare needed to react to sudden changes in path losscharacteristics that typically occur when the mobile turnsaround street corners. We introduce a class of fast hand-offalgorithms based on a local averaging technique thatremoves only the fast fading component from the receivedsignal strength. By exploiting the fact that local averagingdoes not substantially alter the path loss characteristics, weare able to develop an efficient and accurate numerical procedurefor analyzing the performance of this new class offast handoff algorithms. Numerical results demonstrate thatthe use of local averaging significantly reduces handoff delayin the presence of corner effects compared with conventionalhandoff algorithms. Consequently, the outage probabilityis reduced for the entire range of mobile speeds. Ouranalytical approach can be used as a tool for dimensioningfast handoff algorithms that optimize network performancein the presence of both line-of-sight and non-line-of-sighthandoffs.