Methods, systems, and computer program products for determining the location of a mobile terminal based on the strengths of signals received from transmitters having known locations
OwnerMikael Johansson, Elena Casanova +1inventors
InventorsMikael Johansson, Elena Casanova, Anders Gothe
Life of this patent
Estimating the term…
Abstract
The location of a mobile terminal is determined by receiving, at the mobile terminal, signals from at least three transmitters whose locations and transmit power levels are known. The strengths of the received signals are measured and then the location of the mobile terminal is determined based on the measured signal strengths and the locations and transmit power levels of the transmitters.
Claims24
A method of determining a location of a mobile terminal, comprising:
- receiving, at the mobile terminal, respective signals from respective ones of at least three transmitters whose respective locations and respective transmit power levels are known, the respective locations of the at least three transmitters being different from each other;
- measuring respective strengths of the received signals;
- and
- determining the location of the mobile terminal based on the respective strengths of the received signals, the respective locations of the at least three transmitters, and the respective transmit power levels of the at least three transmitters.
A system for determining a location of a mobile terminal, comprising:
- means for receiving, at the mobile terminal, respective signals from respective ones of at least three transmitters whose respective locations and respective transmit power levels are known, the respective locations of the at least three transmitters being different from each other;
- means for measuring respective strengths of the received signals;
- and
- means for determining the location of the mobile terminal based on the respective strengths of the received signals, the respective locations of the at least three transmitters, and the respective transmit power levels of the at least three transmitters.
A computer program product for determining a location of a mobile terminal, comprising:
- a computer readable storage medium having computer readable program code embodied therein, the computer readable program code comprising:
- computer readable program code for receiving, at the mobile terminal, respective signals from respective ones of at least three transmitters whose respective locations and respective transmit power levels are known, the respective locations of the at least three transmitters being different from each other;
- computer readable program code for measuring respective strengths of the received signals;
- and
- computer readable program code for determining the location of the mobile terminal based on the respective strengths of the received signals, the respective locations of the at least three transmitters, and the respective transmit power levels of the at least three transmitters.
Dependencies are inferred from the claim text.