Determining a location of a mobile user terminal
First Claim
1. An apparatus comprising:
- a decision processing module configured to determine whether a first mobile user terminal and a second user terminal are within a relative geographic proximity of one another in dependence on at least one property associated with intermediate network equipment of a packet-switched network to which the first mobile user terminal and second user terminal are operable to connect, the at least one property comprising a transmission time of a packet travelling between the first mobile user terminal and second user terminal via said intermediate network equipment, the decision processing module further configured to remove from said transmission time a delaying effect of one or more switches and/or routers in the intermediate network equipment, the relative geographic proximity of the first mobile terminal and second user terminal being determined in dependence on the transmission time after removal of said delaying effect; and
a location processing module configured to obtain a geographic location of the second user terminal and, on condition that the first mobile user terminal and second user terminal are determined to be within said relative geographic proximity, to use the geographic location of the second user terminal in estimating a geographic location of the first mobile user terminal.
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0 Petitions
Accused Products
Abstract
Apparatus comprising a decision processing module arranged to determine whether a first mobile user terminal and a second mobile user terminal are within a relative geographic proximity of one another, in dependence on a property of intermediate network equipment of a packet-switched network to which the first and second mobile user terminals are operable to connect. The apparatus also comprises a location processing module arranged to obtain a geographic location of the second mobile user terminal and, on condition that the first and second user terminals are determined to be within the proximity determined by the decision module, to use the geographic location of the second mobile user terminal in estimating a geographic location of the first mobile user terminal.
32 Citations
20 Claims
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1. An apparatus comprising:
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a decision processing module configured to determine whether a first mobile user terminal and a second user terminal are within a relative geographic proximity of one another in dependence on at least one property associated with intermediate network equipment of a packet-switched network to which the first mobile user terminal and second user terminal are operable to connect, the at least one property comprising a transmission time of a packet travelling between the first mobile user terminal and second user terminal via said intermediate network equipment, the decision processing module further configured to remove from said transmission time a delaying effect of one or more switches and/or routers in the intermediate network equipment, the relative geographic proximity of the first mobile terminal and second user terminal being determined in dependence on the transmission time after removal of said delaying effect; and a location processing module configured to obtain a geographic location of the second user terminal and, on condition that the first mobile user terminal and second user terminal are determined to be within said relative geographic proximity, to use the geographic location of the second user terminal in estimating a geographic location of the first mobile user terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. One or more computer readable storage memory devices comprising code configured to, responsive to execution by one or more processors, perform operations comprising:
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determining whether a first mobile user terminal and a second mobile user terminal are within a relative geographic proximity of one another, in dependence on at least one property associated with intermediate network equipment of a packet-switched network to which the first mobile user terminal) and second mobile user terminal are operable to connect, the at least one property comprising a transmission time of a packet travelling between the first mobile user terminal and second mobile user terminal via said intermediate network equipment, the determining further comprising removing from said transmission time a delaying effect of one or more switches and/or routers in the intermediate network equipment, the relative geographic proximity of the first mobile user terminal and second mobile user terminal being determined in dependence on the transmission time after removal of said delaying effect; obtaining a geographic location of the second mobile user terminal; and on condition that the first mobile user terminal and the second mobile user terminal are determined to be within said relative geographic proximity, using the geographic location of the second mobile user terminal in estimating a geographic location of the first mobile user terminal.
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18. A computer-implemented method comprising:
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determining whether a first mobile user terminal and a second mobile user terminal are within a relative geographic proximity of one another, the first and second mobile user terminals being determined to be within said relative geographic proximity based, at least in part, on at least one property associated with intermediate network equipment of a packet-switched network to which the first and second mobile user terminals are operable to connect, the at least one property comprising a transmission time of a packet travelling between the first mobile user terminal and second mobile user terminal via said intermediate network equipment, the determining further comprising removing from said transmission time a delaying effect of one or more switches and/or routers in the intermediate network equipment, the relative geographic proximity of the first mobile user terminal and second mobile user terminal being determined in dependence on the transmission time after removal of said delaying effect; obtaining a geographic location of the second mobile user terminal using a satellite positioning system, wherein the first mobile user terminal is not equipped with access to any satellite based positioning system; and on condition that the first mobile user terminal and second mobile user terminal are determined to be within said relative geographic proximity, using the geographic location of the second mobile user terminal in estimating a geographic location of the first mobile user terminal. - View Dependent Claims (19, 20)
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Specification