Abstract

A new preemptive handoff scheme in integrated mobile communication environment is presented in this paper. The preemptive handoff schemes have worked in such a way that data types of lesser priority have been preemptive in an ad-hoc fashion. In the proposed scheme, the cell is divided into two regions, the usable area and the handoff region. The right of preemption has been given to incoming handoff real-time (voice) calls. The incoming handoff calls can only preempt ongoing calls present in the handoff region. Calls present in the usable area are not touched. Thus, a degree of protection is offered to the ongoing calls in the handoff region, whatever type of calls they may be.

Key words: Preemptive handoff, non-preemptive handoff, real-time traffic, non-real time traffic, blocking probability.