Method of and system for signal analysis in a wireless communications system
First Claim
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1. A method of analyzing a signal received at a subscriber station in a wireless communications system, the method comprising:
- receiving a composite signal at the subscriber station, the composite signal comprising one or more component signals from respective reference sources;
determining whether a component signal of the composite signal was relayed by a repeater;
obtaining a time correction for the repeater if the component signal was relayed by the repeater; and
determining a position of the subscriber station, the determining comprising correcting a time measurement based at least in part on the time correction, the time measurement comprising a time between transmission of the component signal by a reference source and receipt of the signal by the subscriber station, wherein the position of the subscriber station is determined from the corrected time measurement and a position of the repeater in lieu of the time measurement and a position of the reference source.
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Abstract
A method of and system for calibrating a repeater in a wireless communications system are provided. The one or more calibration parameters for the repeater are derived from (a) time measurements derived from one or more signals relayed by the repeater and received at a plurality of different measurement positions, and (b) the positions of the measurement locations. In one application, the one or more parameters are used in determining the positions of subscriber stations in the wireless communications system.
27 Citations
22 Claims
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1. A method of analyzing a signal received at a subscriber station in a wireless communications system, the method comprising:
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receiving a composite signal at the subscriber station, the composite signal comprising one or more component signals from respective reference sources; determining whether a component signal of the composite signal was relayed by a repeater; obtaining a time correction for the repeater if the component signal was relayed by the repeater; and determining a position of the subscriber station, the determining comprising correcting a time measurement based at least in part on the time correction, the time measurement comprising a time between transmission of the component signal by a reference source and receipt of the signal by the subscriber station, wherein the position of the subscriber station is determined from the corrected time measurement and a position of the repeater in lieu of the time measurement and a position of the reference source. - View Dependent Claims (2, 3, 4, 5, 6, 21, 22)
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7. A system for analyzing a signal received at a subscriber station in a wireless communications system, the system comprising:
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a receiver configured to receive a composite signal at the subscriber station, the composite signal comprising one or more component signals from respective reference sources; and a processor configured to determine whether a component signal of the composite signal was relayed by a repeater, obtain a time correction for the repeater if the component signal was related by the repeater, and determine a position of the subscriber station, the determination comprising correcting a time measurement based at least in part on the time correction, the time measurement comprising a time between transmission of the component signal by a reference source and receipt of the signal by the subscriber station, wherein the position of the subscriber station is determined from the corrected time measurement and a position of the repeater in lieu of the time measurement and a position of the reference source. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A system, comprising:
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means for receiving a composite signal at a subscriber station, the composite signal comprising one or more component signals from respective reference sources means for determining whether a component signal of the composite signal was relayed by a repeater; means for obtaining a time correction for the repeater if the component signal was relayed by the repeater; and means for determining a position of the subscriber station, the determining comprising correcting a time measurement based at least in part on the time correction, the time measurement comprising a time between transmission of the component signal by a reference source and receipt of the signal by the subscriber station, wherein the position of the subscriber station is determined from the corrected time measurement and a position of the repeater in lieu of the time measurement and a position of the reference source. - View Dependent Claims (15, 16, 17)
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18. A non-transitory processor-readable medium comprising instructions executable by a processor, the instructions comprising:
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instructions for receiving a composite signal at a subscriber station, the composite signal comprising one or more component signals from respective reference sources; instructions for determining whether a component signal of the composite signal was relayed by a repeater; instructions for obtaining a time correction for the repeater if the component signal was relayed by the repeater; and instructions for determining a position of the subscriber station, the determining comprising correcting a time measurement based at least in part on the time correction, the time measurement comprising a time between transmission of the component signal by a reference source and receipt of the signal by the subscriber station, wherein the position of the subscriber station is determined from the corrected time measurement and a position of the repeater in lieu of the time measurement and a position of the reference source. - View Dependent Claims (19, 20)
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Specification