Performance modeling of a wireless 4G cell under a GPS scheme with hand off

A analytic framework is devised, based on the principle of maximum entropy (ME), for the performance modeling of a wireless 4G cell with bursty multimedia traffic with hand off under an efficient MAC protocol with a buffer threshold-based generalized partial sharing (GPS) traffic handling scheme. In this context, an open queueing network model (QNM) is proposed consisting of three interacting multiclass GE-type queueing and delay systems, namely a GE/GE/c₁/c₁ loss system of IP voice calls, a GE/GE/c₂/N₂/FCFS/CBS(T_lT_h) queueing system of streaming media packets with low (T_l) and high (T_h) buffer thresholds and a GE/GE/l/N₃/PS delay system with a discriminatory PS transfer rule. Analytic ME solutions for the state probabilities of these systems are characterized, subject to appropriate GE-type queueing and delay theoretic constraints and new closed form expressions for the aggregate state and blocking probabilities are determined. Typical numerical examples are included to validate the ME performance metrics against Java-based simulation results and also to study the effect of bursty multiple class traffic upon the performance of the cell.