Method for locating mobile stations in a digital telephone netwo

Details Method for locating mobile stations in a digital telephone netwo Method for locating mobile stations in a digital telephone netwo

1994-05-31

1996-10-08

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

455 542, 455 671, H04B 100, H04B 700

Patent

active

055640796

ABSTRACT:
The invention relates to a method for locating mobile stations in a digital telecommunication network, especially the GSM network. According to the invention, reference measurements are carried out on relevant traffic routes with the aid of a measuring mobile in order to provide position information related to measured signals. With the aid of these reference data and the position information, an adaptive neural network is trained, which network, with the aid of corresponding measurement data which are transmitted from the mobile station to a respective base station, carries out the localization of the mobile station. Use of the adaptive neural network provides a more accurate position determination than earlier systems which were only based on the TA (timing advance) value.

REFERENCES:
patent: 4990922 (1991-02-01), Young et al.
patent: 5119102 (1992-06-01), Barnard
patent: 5155490 (1992-10-01), Spradley, Jr. et al.
patent: 5359521 (1994-10-01), Kyrtsos et al.

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