Method of evaluating a location of a mobile station within a cellular telecommunication network
First Claim
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1. A method of evaluating a location of a mobile station within a cellular telecommunication system,wherein a cell is associated with a base station (BS), wherein the mobile station is located within the cell and wherein a timing advance is evaluated by the base station,comprising the following steps:
- evaluating a direct distance between the mobile station and the base station for a number of locations of the mobile station within the cell,evaluating common values depending on the direct distances, andevaluating an estimated direct distance of the mobile station from the base station depending on the common values;
wherein the estimated direct distance is generally evaluated as follows;
rd*=a0+a1×
TA+a2×
TA2+a3×
TA3+ . . .wherein a0, a1, a2, a3, . . . are the evaluated common values and TA is the evaluated timing advance.
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Abstract
A method of evaluating a location of a mobile station within a cellular telecommunication system is described.
A cell is associated with a base station (BS). The mobile station (MS) is located within the cell. A timing advance (TA) is evaluated by the base station (BS).
The method comprises the following steps:
- evaluating a direct distance (rd) between the mobile station (MS) and the base station (BS) for a number of locations (L) of the mobile station (MS) within the cell,
- evaluating common values depending on the direct distances (rd), and
- evaluating an estimated direct distance (rd*) of the mobile station (MS) from the base station (BS) depending on the common values.
18 Citations
12 Claims
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1. A method of evaluating a location of a mobile station within a cellular telecommunication system,
wherein a cell is associated with a base station (BS), wherein the mobile station is located within the cell and wherein a timing advance is evaluated by the base station, comprising the following steps: -
evaluating a direct distance between the mobile station and the base station for a number of locations of the mobile station within the cell, evaluating common values depending on the direct distances, and evaluating an estimated direct distance of the mobile station from the base station depending on the common values; wherein the estimated direct distance is generally evaluated as follows;
rd*=a0+a1×
TA+a2×
TA2+a3×
TA3+ . . .wherein a0, a1, a2, a3, . . . are the evaluated common values and TA is the evaluated timing advance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of evaluating a location of a mobile station within a cellular telecommunication system, the method comprising:
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predetermining exact distances between a base station and a plurality of locations having a same timing advance, wherein said predetermination is performed for each one of a plurality of timing advances associated with a cell; averaging the exact distances for the plurality of locations having the same timing advance, wherein said average is individually performed for each one of the plurality of timing advances; determining a correlation among the averaged exact distances for the plurality of timing advances; evaluating an estimated distance between a mobile station and the base station based on the correlation of the plurality of timing advances, the estimated direct distance being generally evaluated as follows;
rd*=a0+a1×
TA+a2×
TA2+a3×
TA3+ . . .wherein a0, a1, a2, a3, . . . are the evaluated common values and TA is the evaluated timing advance. - View Dependent Claims (12)
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Specification