Handoff ordering using signal prediction priority queuing in personal communication systems

Handoffs in a mobile cellular communications environment will become an increasingly important issue as cell sizes shrink to accommodate an increasingly large demand for services. In this paper, a new handoff ordering method is proposed which can be used to provide rapid handovers with a smaller percentage of dropped calls than other methods, Signal prediction priority queuing (SPPQ) is a generic queuing method which can be adapted to almost any handover technique for the benefit of decreased dropped calls, In a typical personal communication systems (PCS's) environment, it is shown that for realistic call-blocking probabilities (2%-6%), SPPQ leads to about 15% fewer dropped calls compared to first-in-first-out (FIFO) queuing. This benefit comes at the expense of a slight increase (<1%) in blocked call percentage, The proposed SPPQ scheme is also compared to a recently developed method called measurement-based priority scheme (MBPS), and, based on worst case scenarios, it is shown to outperform MBPS as well.