Adaptive handoff algorithms for cellular overlay systems using fuzzy logic

Abstract

An overlay system is a hierarchical architecture that uses large macrocells to overlay clusters of small microcells. Resource management in the overlay system is much more complex than in pure macrocell and microcell systems. A fixed parameter handoff algorithm cannot perform well in a complex and dynamic overlay environment. This paper proposes an adaptive overlay handoff algorithm that allows a systematic tradeoff among the system design parameters and improves the overall system performance.