Performance analysis of generalized handover model for cellular networks

In this paper we analyze the call completion performance of a generalized handoff model for the cellular network. The proposed model allows more than one failed handover attempts before a call can be dropped; and results in a significant reduction in the call dropping probability. The analysis uses the negative binomial compound sum approach to closely approximate the distribution of the random sum of the cell dwell times for a complete call by a weighted sum of Erlang distributions. Furthermore, the analysis considers the effect of unreliable physical link. The final expressions for the required performance metrics are given in terms of the moment generating function of the call holding time distribution.