Does mixed lognormal channel holding time affect the handover performance of guard channel scheme?

While most analytical studies on handover performance assume exponential channel holding times, recent field measurements have shown that channel holding time follows a mixed lognormal distribution. In this paper, the impact of mixed lognormal channel holding time on the handover performance of guard channel scheme with first-in first-out (GCM-FIFO) queuing examined. Our results show that the handover performance of GCM-FIFO is almost the same as the one when the channel holding time follows an exponential distribution. Hence, to evaluate the handover performance of PCS networks where the channel holding time follows a mixed lognormal distribution, one could use the analytical framework developed for the case of exponential channel holding time distributions.