Performance Evaluation Of Hard Handoff Call Arrival Rate In Microcell Of Gsm Networks By Eldolil Traffic Model
The principal aim of this work is to evaluate the network performance under various conditions to easily assist in improving the overall performance. The most important factor that contribute to the performance degradation is the handoff process which in turn resulted in call drop and block probabilities. Both probabilities are all impairing the quality of service (QoS). The evaluation is carried out at the microcell of wireless network which the users are moving in different speeds across the
... speeds across the microcells. Mathematical El-Dolil et al.'s Traffic Model is performed and provided good numerical results about the effect of the probability that a user needs a handoff in the current microcell (Phi) , the average rate of total calls carried in neighboring microcell (Rcj), the rate of successful handoffs (Rsh), and the probability that a call that has already been handed off successfully would require another handoff (Phh), on the handoff calls arrival rate ( ). These parameters are characterized into two different categories; constant and inconstant. The relevant four parameters were investigated and then calculated under multi different cases according to the system conditions which expressed in this paper as cases. Through the analytical process, the four different parameters show dissimilar degrees of impact on the handoff arrival call rate significantly( ). Accordingly, it is found that the rate of successful handoffs (Rsh) has a positive effect on the handoff call arrival rate with different levels relaying on only the probability that a call that has already been handed off successfully would require another handoff (Phh) in its minimum value, but in its maximum values it has a negative effect. Whereas, the average rate of total calls carried in neighboring cell has always a positive effect on arrival call rate significantly( ) in all values of constant parameters values.