Associating a Universal Time with Received Signal
First Claim
1. A method of associating a universal time with time of arrival information of an identified component of a signal at a terminal of a radio positioning system, the method comprising the steps ofobtaining a marker signal with an associated universal time tag from a timing device;
- measuring the timing relationship between the marker signal and an independent oscillator;
determining time of arrival information of said identified component relative to the independent oscillator;
calculating the universal time corresponding to the time of arrival information of said identified component from said universal time tag and said measured timing phase relationship; and
associating the calculated universal time with said time of arrival information.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of associating a universal time with time of arrival information of an identified component of a signal at a terminal of a radio positioning system is disclosed. In the method a marker signal with an associated universal time tag is obtained from a timing device (or the marker signal is obtained from an independent oscillator and a universal time tag assigned to the marker signal), and the time or phase relationship between the marker signal (or between the time of arrival information of said identified component respectively) and the oscillator is measured. The time of arrival information of said identified component relative to the oscillator is determined and the universal time corresponding to the time of arrival information of said identified component is calculated from said universal time tag and said measured time or phase relationship, before the calculated universal time is associated with said time of arrival information.
-
Citations
22 Claims
-
1. A method of associating a universal time with time of arrival information of an identified component of a signal at a terminal of a radio positioning system, the method comprising the steps of
obtaining a marker signal with an associated universal time tag from a timing device; -
measuring the timing relationship between the marker signal and an independent oscillator; determining time of arrival information of said identified component relative to the independent oscillator; calculating the universal time corresponding to the time of arrival information of said identified component from said universal time tag and said measured timing phase relationship; and associating the calculated universal time with said time of arrival information. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 22)
-
-
2. A method of associating a universal time with time of arrival information of an identified component of a signal, the method comprising the steps of
obtaining a marker signal from an independent oscillator; -
assigning a universal time tag to the marker signal; determining time of arrival information of said identified component relative to the independent oscillator; calculating the universal time corresponding to the time of arrival information of said identified component from said universal time tag and said determined relative time of arrival information; and associating the calculated universal time with said time of arrival information.
-
-
14. A radio terminal of a radio positioning system, the terminal having
a timing device for generating a marker signal whose universal time is known; -
an independent oscillator; and a processor arranged to obtain the marker signal from the timing device, to measure the timing relationship between the marker signal and the independent oscillator, to determine time of arrival information of said identified component relative to the oscillator, to calculate the universal time corresponding to the time of arrival information of said identified component from said universal time tag and said measured timing phase relationship; and
to associate the calculated universal time with said time of arrival information. - View Dependent Claims (16, 17, 18, 19, 20, 21)
-
-
15. A radio terminal of a radio positioning system, the terminal having
a timing device generating a universal time-tag; -
an independent oscillator; and a processor arranged to obtain a marker signal from the independent oscillator, to assign the universal time tag to the marker signal, to determine time of arrival information of said identified component relative to the oscillator, to calculate the universal time corresponding to the time of arrival information of said identified component from said universal time tag and said determined relative time of arrival; and
to associate the calculated universal time with said time of arrival information.
-
Specification