Location method for mobile networks
First Claim
1. A method for locating mobile terminals in a mobile network, the method comprising the steps of:
- receiving location-dependent parameter sets, each parameter set comprising at least one parameter indicative of the location of an individual mobile terminal; and
determining a location estimate for a parameter set received, the location estimate indicating the location of the respective mobile terminal;
characterized by the steps of;
for an individual first parameter set, forming a matrix corresponding to said set, the matrix comprising a plurality of elements, whereby each element is associated with a certain geographical area and contains a value indicating a probability of the mobile being located within said area;
storing at least one matrix formed for a mobile; and
, in response to a second parameter set subsequently received for the mobile;
updating the values of at least one matrix stored for the mobile; and
, determining the location estimate on the basis of the element values of the matrix corresponding to the second parameter set and on the basis of the element values of the said at least one matrix having the updated values.
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Accused Products
Abstract
The invention concerns locating mobile terminals in a mobile network. A location estimate is determined based on a parameter set received from the mobile network. In order to improve the accuracy of the system, a matrix is formed for an individual first parameter set, the matrix comprising a plurality of elements, whereby each element is associated with a certain geographical area and contains a value which indicates the probability of the mobile being located within said area. At least one matrix formed for a mobile is stored, and in response to a second parameter set received subsequently for the mobile, (a) the values of at least one matrix stored are updated, and (b) the location estimate is determined on the basis of the element values of the matrix corresponding to the second parameter set and on the basis of the element values of the said at least one matrix having the updated values.
23 Citations
16 Claims
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1. A method for locating mobile terminals in a mobile network, the method comprising the steps of:
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receiving location-dependent parameter sets, each parameter set comprising at least one parameter indicative of the location of an individual mobile terminal; and
determining a location estimate for a parameter set received, the location estimate indicating the location of the respective mobile terminal;
characterized by the steps of;
for an individual first parameter set, forming a matrix corresponding to said set, the matrix comprising a plurality of elements, whereby each element is associated with a certain geographical area and contains a value indicating a probability of the mobile being located within said area;
storing at least one matrix formed for a mobile; and
,in response to a second parameter set subsequently received for the mobile;
updating the values of at least one matrix stored for the mobile; and
,determining the location estimate on the basis of the element values of the matrix corresponding to the second parameter set and on the basis of the element values of the said at least one matrix having the updated values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 15)
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11. A system for locating mobile terminals in a mobile network, the system comprising:
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first means for receiving parameter sets, each parameter set including at least one parameter indicative of the location of an individual mobile terminal and second means for finding a location estimate for a parameter set received, the location estimate indicating the location of the respective mobile terminal, characterized in that the system comprises third means for forming a matrix corresponding to a parameter set, the matrix comprising a plurality of elements, whereby each element is associated with a certain geographical area and contains a value indicating a probability of the mobile being located within said area, and fourth means for storing at least one matrix formed for a mobile, wherein the second means, responsive to a parameter set received for the mobile, are adapted (a) to update the values of at least one matrix stored for the mobile and (b) to determine the location estimate on the basis of the element values of the matrix corresponding to the parameter set received and on the basis of the element values of the matrix with the updated values.
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12. A mobile terminal for a mobile network, the mobile terminal comprising:
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first means for receiving parameter sets, each parameter set including at least one parameter whose value is dependent on the location of the mobile terminal within the network and second means for finding a location estimate for a parameter set received, the location estimate indicating the location of the mobile terminal, characterized in that the mobile comprises third means for storing at least one matrix in the mobile, the matrix comprising a plurality of elements, whereby each element is associated with a certain geographical area and contains a value which indicates a probability of the mobile locating within said area, wherein the second means, responsive to a parameter set received, are adapted (a) to update the values of at least one matrix stored in the mobile and (b) to determine the location estimate on the basis of the element values of the matrix corresponding to the parameter set received and on the basis of the element values of the matrix with the updated values. - View Dependent Claims (13, 14)
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16. A method for locating mobile terminals in a mobile network, the method comprising the steps of:
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receiving location-dependent parameter sets, each parameter set comprising at least one parameter indicative of the location of an individual mobile terminal;
for an individual first parameter set, forming a matrix corresponding to said set, the matrix comprising a plurality of elements, whereby each element is associated with a certain geographical area and contains a value indicating a probability of the mobile being located within said area;
storing at least one matrix formed for a mobile; and
,in response to a second parameter set subsequently received for the mobile terminal;
updating the values of at least one matrix stored for the mobile; and
,determining the location estimate on the basis of the element values of the matrix corresponding to the second parameter set and on the basis of the element values of the said at least one matrix having the updated values.
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Specification