métodos de estimativa de uma localização de um terminal dentro de uma área de cobertura de uma rede sem fio, e de compilar dados de levantamento, processador, e, meio legível por computador

摘要

The location of a terminal is estimated with an area of coverage of a wireless network comprising at least one fixed node by measuring a complex frequency response of a radio channel between the terminal and one of said fixed nodes and estimating the location of the terminal on the basis of at least a comparison between data representing a first metric of the measuring complex frequency response and data representing a plurality of stored metrics, each of said plurality of stored metrics being related to one of a plurality of different locations within the network and each stored metric being of a complex frequency response measured between the said one of said fixed nodes and the location within the network to which the metric relates.