Process and apparatus for locating mobile stations
First Claim
1. A process for locating mobile stations in a cellular mobile radio network, the network including a plurality of radio cells in which each radio cell is supplied by at least one base station, the mobile stations, in addition to functions within the mobile radio network, evaluating signals from transmitters for position determination of the mobile stations, and each transmitter is assigned to a locally defined underlay broadcast cell located within at least one of the radio cells, the process comprising:
- emitting first information about an underlay broadcast cell from the at least one base station of one of the plurality of radio cells in which the respective underlay broadcast cell is located;
emitting second information about the underlay broadcast cell from the transmitter assigned to the underlay broadcast cell;
receiving, at the mobile stations, the first and second information;
comparing, at the mobile stations, the first and second information received from the base station and the transmitter of the underlay broadcast cell; and
determining a position of the mobile stations with the first and second information when the first information corresponds with the second information.
2 Assignments
0 Petitions
Accused Products
Abstract
Process and apparatus for locating mobile stations in a cellular mobile radio network. The apparatus may include a plurality of radio cells in which each radio cell is supplied by at least one base station, a plurality of transmitters in which each of the plurality of transmitters establish a locally defined underlay broadcast cell, the plurality of transmitters being located within at least one of the plurality of radio cells, a signal receiving and evaluating device associated with a respective mobile station that receives signals from the plurality of radio cells and the plurality of transmitters, information comparing units associated with the respective mobile station that compare information about one of the plurality of underlay broadcast cells received from a corresponding base station of the mobile radio network and information about the locally defined underlay broadcast cell received from one of the plurality of transmitters, a position determination device, and a device that forwards information about the locally defined underlay broadcast cell from the one transmitter to the position determination device when the compared information agree. The process may include emitting an underlay broadcast cell from the base stations of the mobile radio network, receiving, at the mobile stations, information about the underlay broadcast cell emitted from a corresponding base station of the mobile radio network, receiving, at the mobile stations, information about the locally defined underlay broadcast cell emitted from the transmitter, comparing the information received at the mobile stations from the corresponding base station and the transmitter, and determining a position of the mobile stations with the information received from the transmitter if the compared information agree.
34 Citations
16 Claims
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1. A process for locating mobile stations in a cellular mobile radio network, the network including a plurality of radio cells in which each radio cell is supplied by at least one base station, the mobile stations, in addition to functions within the mobile radio network, evaluating signals from transmitters for position determination of the mobile stations, and each transmitter is assigned to a locally defined underlay broadcast cell located within at least one of the radio cells, the process comprising:
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emitting first information about an underlay broadcast cell from the at least one base station of one of the plurality of radio cells in which the respective underlay broadcast cell is located; emitting second information about the underlay broadcast cell from the transmitter assigned to the underlay broadcast cell; receiving, at the mobile stations, the first and second information; comparing, at the mobile stations, the first and second information received from the base station and the transmitter of the underlay broadcast cell; and determining a position of the mobile stations with the first and second information when the first information corresponds with the second information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for locating mobile stations in a cellular mobile radio network comprising:
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a plurality of radio cells in which each radio cell is supplied by at least one base station; a plurality of transmitters in which each of the plurality of transmitters is associated with a locally defined underlay broadcast cell located within at least one of the plurality of radio cells; the at least one base station adapted to emit first information about the underlay broadcast cell located within its respective radio cell; the transmitter adapted to emit second information about the underlay broadcast cell with which it is associated; the mobile stations adapted to receive the first and second information; information comparing units associated with each mobile station that compares the first and second information received from the at least one base station and the transmitter associated with the underlay broadcast cell; and a position determination device adapted to determine the position of the mobile station from the first and second information when the first information corresponds with the second information. - View Dependent Claims (15, 16)
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Specification