K.mizra LLC

K. Miza LLC

Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno

Martin Van Rijn

Franciscus Hendrikus Elferink

A method of determining a position of a mobile telecommunication device () which transmits a signal (S) to base stations (, . . . ) connected by a data link () comprises the steps of: correlating the received signal (S) and a reference signal (S') so as to produce a correlation for each base station, detecting a maximum in each correlation, which maximum is indicative of a time of arrival of the signal (S) at the respective base station, and using the respective times of arrival and the distances (D, D, . . . ) derived therefrom to derive a location of the mobile telecommunication device. The method uses receivers (, . . . ) coupled to a data network (), each receiver (, . . . ) deriving the reference signal (S&#x2032;) from the received signal (S). Each base station may select, if it receives multiple reference signals, the reference signal (S&#x2032;) having the highest quality.

Determining a position of a mobile communication device

A method of determining a position of a mobile telecommunication device () which transmits a signal (S) to base stations (, . . . ) connected by a data link () comprises the steps of: &#x22c5;correlating the received signal (S) and a reference signal (S') so as to produce a correlation for each base station, &#x22c5;detecting a maximum in each correlation, which maximum is indicative of a time of arrival of the signal (S) at the respective base station, and &#x22c5;using the respective times of arrival and the distances (D, D, . . . ) derived therefrom to derive a location of the mobile telecommunication device. The method uses receivers (, . . . ) coupled to a data network (), each receiver (, . . . ) deriving the reference signal (S&#x2032;) from the received signal (S). Each base station may select, if it receives multiple reference signals, the reference signal (S&#x2032;) having the highest quality.

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's-Gravenhage, Netherlands

Martin Van Rijn