Spatial and temporal traffic distribution models for GSM

This paper presents models for the temporal and spatial distributions of traffic in urban areas. The models are based on the analysis of real GSM traffic data from the Lisbon urban area. Several factors are discussed, including geography (terrain occupancy, presence of main roads, etc.) and time variables (like work schedules). Models for the time variation are based on either a double-gaussian or a trapezoidal like function. Exponential, linear and a mixture of both functions are considered to model the spatial variation