Mobile communications stations methods and systems
First Claim
1. A method for use in a mobile communication system for estimating the location of a target mobile station which comprises:
- receiving signals from the target mobile station at a plurality of receivers in different locations andcalculating the location of the target mobile station from information obtained from the received signals,wherein the plurality of receivers comprise first, second and third searching mobile stations,wherein the calculation of location is carried out by the first searching mobile station using a method based upon one of time of arrival and time difference of arrival of signals traveling between the target mobile station and the plurality of receivers, andwherein the first, second, and third mobile stations are operable to communicate with each other by a direct mode of operation (DMO) link.
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Accused Products
Abstract
A method for use in a mobile communication system for estimating the location of a target mobile station (MS) which includes receiving signals from the target MS (N) at a plurality of receivers (MS1, MS2, MS3) in different locations and calculating the location of the target MS (N) from information obtained from the received signals, wherein at least one of the receivers (MS1) is a searching MS and wherein the calculation of location is carried out by the searching MS (MS1). The method may involve the target MS and the searching MS or MSs communicating by a direct mode of operation (DMO) link. The searching MSs may conveniently have GPS attachments. A mobile station which may be used as the target MS or as a searching MS and a system incorporating the same is also disclosed.
27 Citations
29 Claims
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1. A method for use in a mobile communication system for estimating the location of a target mobile station which comprises:
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receiving signals from the target mobile station at a plurality of receivers in different locations and calculating the location of the target mobile station from information obtained from the received signals, wherein the plurality of receivers comprise first, second and third searching mobile stations, wherein the calculation of location is carried out by the first searching mobile station using a method based upon one of time of arrival and time difference of arrival of signals traveling between the target mobile station and the plurality of receivers, and wherein the first, second, and third mobile stations are operable to communicate with each other by a direct mode of operation (DMO) link. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification