Method of determining position in cellular communications network

A time-of arrival(TOA) method of determining the position of a cellular handset, for example a phone or a PDA, comprises causing the wireless terminal (MWT) to adapt to operate on a first network (GSM) having a plurality of first base stations (GSM 1 to GSM 3) and effecting position measurements wit...

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Bibliographische Detailangaben
1. Verfasser:	S.R. DOOLEY,S. MORIDI,D.G. PORCINO
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:	A time-of arrival(TOA) method of determining the position of a cellular handset, for example a phone or a PDA, comprises causing the wireless terminal (MWT) to adapt to operate on a first network (GSM) having a plurality of first base stations (GSM 1 to GSM 3) and effecting position measurements with respect to ranging signals transmitted by one or more of the first base stations and causing the wireless terminal to adapt to operate on a second network (UMTS) having a plurality of second base stations (UMTS 1 to UMTS 3) and effecting position measurements with respect to ranging signals transmitted by one or more of the second base stations. The position measurements are combined and the position of the wireless terminal is determined from the combined measurements. The position fix may be determined by the wireless terminal (MWT) or a remote station to which the position measurements are relayed by the wireless terminal.