Evaluation of a minimum power handoff algorithm

Abstract

Previous work has shown that a hando algorithm based on SIR alone (SIR Based Hando ) prohibits hando s near nominal cell boundaries, causing cell dragging and unnecessarily high transmitter powers. In this paper, we p r o p o s e the Minimum Power Hando (MPH) algorithm in which mobiles constantly search for a combination of base and channel assignment that minimizes the uplink transmitted power. This algorithm is shown to reduce the average power level by 4dB compared to SIR Based Hando . Results show that using received power as a hando criterion reduces call dropping but increases the numb e r o f u n n e c e ssary hando s signi cantly. To a void a \ping pong" e ect, a timer is introduced to delay the intercell hando .