On threshold setting and hysteresis issues of handoff algorithms

Studies on the performance of handoff algorithms using both absolute signal strength and relative signal strength measurements have been carried out. A scheme is considered in which handoff initiation is based on the absolute signal strength of an approaching base station along with the relative signal strength of the base stations. As a performance measure we used Expected Average Signal Strength (EASS) of base station at which handoff occurs. The effect of using absolute signal strength of an approaching base station instead of serving base station signal strength after the selection of probable base station to which cart has to be handed over is illustrated. Results of simulation study are included to substantiate our views.