A traffic simulator for urban mobile networks

This paper develops a traffic simulator for urban mobile network of Manhattan type. This simulator permitted the performance of a network to be measured by varying its parameters. Many interesting conclusions resulted from the simulations. For instance, when some channels of each cell are reserved for handoffs, a consequent decrease in the loss probability for current calls has been observed. However, in order to not excessively penalize new calls, the number of reserved channels should not exceed half of the total number of channels. On the other hand, the remarkable aspect evidenced by these simulations is the significant improvement of the network performance, thereby a greater quality of service supplied to subscribers, when dynamic frequency assignment is used. Therefore, the improvements of network performance are not proportional to the number of cells consulted during the frequency assignment process.