Method and system of a mobile subscriber estimating position
First Claim
Patent Images
1. A method of a mobile subscriber (MS) estimating position, comprising:
- the MS receiving at least one satellite transmitted signal with a first receiver;
the MS estimating a time of arrival of the at least one satellite transmitted signal;
the MS receiving a plurality of terrestrial base station signals from a plurality of base stations with a second receiver, the MS identifying one of a plurality base stations as a serving base station;
the MS determining a timing offset of the plurality of terrestrial base stations signals through communication with the serving base station;
the MS estimating a time of arrival of each of the plurality terrestrial base station signals;
compensating the estimated time of arrival of each of the plurality of terrestrial base station signals using the timing offset of the corresponding terrestrial base station signal, wherein the timing offset comprises a quantity proportional to the difference between the time of transmission of the terrestrial base station signal and the time of transmission of the received satellite signal;
the MS estimating its position based on the estimated time of arrival of the at least one satellite transmitted signal and the compensated estimated times of arrival of the plurality of terrestrial base station signals.
7 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus of a mobile subscriber (MS) estimating position are disclosed. One method includes the MS receiving at least one satellite transmitted signal with a first receiver, and estimating a time of arrival of the at least one satellite transmitted signal. The MS additionally receives at least one terrestrial base station signal with a second receiver, and estimates a time of arrival of the at least one terrestrial base station signal. The MS estimates its position based on the estimated time of arrival of the at least one satellite transmitted signal and the estimated time of arrival of the at least one terrestrial base station signal.
15 Citations
20 Claims
-
1. A method of a mobile subscriber (MS) estimating position, comprising:
-
the MS receiving at least one satellite transmitted signal with a first receiver; the MS estimating a time of arrival of the at least one satellite transmitted signal; the MS receiving a plurality of terrestrial base station signals from a plurality of base stations with a second receiver, the MS identifying one of a plurality base stations as a serving base station; the MS determining a timing offset of the plurality of terrestrial base stations signals through communication with the serving base station; the MS estimating a time of arrival of each of the plurality terrestrial base station signals; compensating the estimated time of arrival of each of the plurality of terrestrial base station signals using the timing offset of the corresponding terrestrial base station signal, wherein the timing offset comprises a quantity proportional to the difference between the time of transmission of the terrestrial base station signal and the time of transmission of the received satellite signal; the MS estimating its position based on the estimated time of arrival of the at least one satellite transmitted signal and the compensated estimated times of arrival of the plurality of terrestrial base station signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A WiMAX subscriber, comprising:
-
means for the subscriber receiving at least one GPS signal with a first receiver; means for the subscriber estimating a time of arrival of the at least one GPS signal; means for the subscriber receiving a plurality of WiMAX base station signals from a plurality of base stations with a second receiver, the subscriber identifying one of the plurality of base stations as a serving base station; the subscriber determining a timing offset of the plurality of WiMAX base stations signals through communication with the serving base station; means for the subscriber estimating a time of arrival of each of the plurality of WiMAX base station signals; means for compensating the estimated time of arrival of each of the plurality of WiMAX base station signals using the timing offset of the corresponding WiMAX base station signal, wherein the timing offset comprises a quantity proportional to the difference between the time of transmission of the WiMAX base station signal and the time of transmission of the GPS signal; means for the subscriber estimating its position based on the estimated time of arrival of the at least one GPS signal and the compensated estimated times of arrival of the plurality of WiMAX base station signals. - View Dependent Claims (19, 20)
-
Specification