Approximate analysis of a dynamic-channel-assignment scheme with handoffs

Abstract

An approximate analysis for a dynamic-channel-assignment (DCA) scheme with handoffs is proposed. In a DCA scheme, there is no fixed relationship between channels and cells. Channel usage in a cell is subject to cochannel-interference constraints owing to the shared use of the same channel in nearby cells. This causes exact analysis of DCA schemes to be highly complex even in the absence of handoffs. An approximate analysis for a DCA scheme, called the ordered dynamic-channel-assignment (ODCAR) scheme, is proposed which takes into consideration handoff calls. The analysis results are compared with simulation results for a linear-highway microcellular system. The analysis proposed is simple and shows good approximation to the simulation results for the system parameters used. It is shown, also, that the ODCAR scheme performs close to a full-access system.