Avaliação de desempenho da camada física de redes do sistema de telecomunicações móveis universal.

Abstract

This work presents the performance evaluation of the physical layer of a macro-cellular Universal Mobile Telecommunication System network, using static simulations and the Monte Carlo method. The coverage area is characterized as a suburban environment. That evaluation focuses on the network performance characteristics, which are related to the multiple access interference and the capacity to serve simultaneous users from various service classes and different velocities, within of network range. The analysis is presented according to the density of users in the uplink and downlink directions. The multiple access interference is examined using the average carrier-to-interference ratio and average other-to-own interference ratio. The capability is measured using the average number of users served simultaneously by the cells, the average uplink load factor and average downlink throughput. The average number of users per cell presents a limit, which depends on the network characteristics related to the multiple access interference and to the maximum transmission power defined during the network planing phase. The carrier to interference ratio decreases with the user velocity inside the coverage area. The average number of users per cell is limited, which limits the cell average throughput.