Performance analysis for cellular mobile network with mixed services and platform types

A fixed-point approximation for estimating various performance measures in cellular mobile networks with mixed services and platform types is consider ed. To maintain handoff priority and access regulation, it is assumed that the system operates under a trunk-reservation policy. The correlations amon g cells due to handoff traffic are expressed by rate equations and the dist ribution of the number of busy channels in each cell is approximated by one -dimensional recursion. This leads to a set of nonlinear fixed-point equati ons which can be solved by repeated substitutions. The computational comple xity and memory requirements of the proposed algorithm are linear so that i t can be used to estimate performance measures of the cellular mobile netwo rk even when the system size is large. The proposed approximations are test ed on a number of simple examples. Numerical results for networks consistin g of five and seven cells are given. The comparison between approximation a nd simulation results shows that the proposed fixed-point approximation is fairly accurate.