Patent Number: 6,167,276

Title: Method to localize a mobile telephone

Abstract: To enable the localizing of a mobile telephone in a network of base transceiver stations, it is planned that the mobile telephone will undertake an exchange with a base transceiver station. In this exchange, this station will send it an absolute time so that the mobile telephone can temporarily locate itself with respect to this absolute time. During this exchange, the first base transceiver station furthermore sends the mobile telephone a piece of information .tau.1 on the distance between them. Then, at least two other base stations send different absolute times which are exploited by the mobile telephone to compute its position in the network by triangulation.

Inventors: Pite ; Eric (Sartrouvik, FR)

Assignee: Sagem SA

International Classification: H04Q 7/38 (20060101); H04Q 007/20 ()

Expiration Date: 12/26/2017