Performance analysis of integrated voice/data communication in cellular systems with virtually fixed channel assignment

The authors present a performance evaluation model for an integrated cellular mobile communication systems that uses virtually fixed channel assignment (VFCA). FCA is efficient in channel reuse, but it is not flexible. A channel allocated to a set of co-channel cells cannot be used in other cells even if it is idle. VFCA is a flexible fixed channel assignment or borrowing channel assignment scheme. Channels available in a system are all allocated to cells according to FCA, so that each cell has a list of nominal channels. A cell request is assigned a nominal channel if one is available in its cell; otherwise a nonnominal channel is borrowed to service this call. VFCA and an associated analytical model are outlined. Numerical results for an example scenario are given