Analytical modeling of a time-threshold based bandwidth allocation scheme for cellular networks

Abstract

In this paper, we developed an analytical model of a time-threshold based bandwidth allocation scheme for voice calls in cellular networks. The main idea in this scheme is based on monitoring the elapsed real time of handoff calls and according to a time-threshold parameter; a handoff call is either prioritized or treated as a new call. The scheme is modeled using a two-dimensional Markov chain and numerical analysis is presented to estimate blocking probabilities of new calls, dropping probabilities of handoff calls and system utilization. The scheme is also simulated under different network conditions. It is observed that analytical results closely match the simulation results. The results show that the proposed scheme yields a considerable performance enhancement when compared with other schemes. (c) 2006 Elsevier B.V. All rights reserved.