Performance analysis of a dual-threshold reservation (DTR) scheme for voice/data integrated mobile wireless networks

The emerging next generation of wireless cellular networks has to provide the quality-of-service (QoS) for a variety of applications. This paper addresses bandwidth allocation for a voice and data integrated mobile wireless network. Specifically, we propose a new bandwidth allocation scheme called dual-threshold reservation (DTR) scheme, which is a natural extension from well-known guarded channel (GC) scheme used in cellular networks supporting voice traffic. The basic idea is to use two thresholds, one for reserving channels for voice handoff, while the other is used to block data traffic into the network in order to preserve the voice performance in terms of handoff dropping and call blocking probabilities. We develop an analytical model which can obtain its performance using an iterative technique. Results obtained from the analytical model are used to illustrate the system tradeoff.