METHOD OF LOCATING TERMINAL, AND CELLULAR RADIO SYSTEM

摘要

The invention relates to a cellular radio system and a method of locating a terminal in a cellular radio system having in each cell at least one base station (104) communicating with the terminals (100) within its area. The base station measures channel parameters from the signals transmitted by the terminals. The coverage area of each base station is modelled by a digital map. To enable accurate localization of the terminals, to each point on the digital map is added a model of the channel parameters of a signal to be transmitted from the point. The channel parameters estimated from the signal of the terminal are compared with the parameters at different points on the map, and the terminal is located on the basis of the comparison.