Method and system for positioning mobile units based on angle measurements
First Claim
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1. A method for positioning a target mobile unit when the target mobile unit is unable to measure a direction of arrival of a signal from a base station serving the target mobile unit, the method comprising:
- obtaining from a plurality of mobile units located within a predetermined distance of the target mobile unit and having an adaptive antenna arrays, and from a plurality of base stations, information regarding a relative location of the target mobile unit; and
, positioning the location of the target mobile unit according to the information.
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Abstract
A method and system for positioning mobile units using angle measurements taken by neighboring mobile units is disclosed. A selected mobile unit and mobile units in the vicinity of the selected mobile unit are selectively instructed to measure and report information related to the position of the selected mobile unit. The reported information is used to compute a position of the selected mobile unit.
13 Citations
12 Claims
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1. A method for positioning a target mobile unit when the target mobile unit is unable to measure a direction of arrival of a signal from a base station serving the target mobile unit, the method comprising:
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obtaining from a plurality of mobile units located within a predetermined distance of the target mobile unit and having an adaptive antenna arrays, and from a plurality of base stations, information regarding a relative location of the target mobile unit; and
,positioning the location of the target mobile unit according to the information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for positioning a target mobile unit when the target mobile unit is unable to measure a direction of arrival of a signal from a base station serving the target mobile unit, the system comprising:
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a data processing unit which receives information regarding a relative location of the target mobile unit from a plurality of mobile units located within a predetermined distance of the target mobile unit and a plurality of base stations and calculates location of the target mobile unit based on the information;
a plurality of mobile units located within a predetermined distance of the target mobile unit, each mobile unit having an adaptive antenna array for providing the information regarding the relative location of the target mobile unit and a base station; and
,a plurality of base stations serving the plurality of mobile units and providing the information regarding the relative location of the target mobile unit and the plurality of mobile units located within a predetermined distance of the target mobile unit. - View Dependent Claims (10, 11, 12)
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Specification