Position location using integrated services digital broadcasting - terrestrial (ISDB-T) broadcast television signals
AssigneeRosom Corporation
InventorsJames J. Spilker JR., Matthew Rabinowitz
Life of this patent
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Abstract
A method, apparatus, and computer-readable media for determining the position of a user terminal comprises receiving at the user terminal a digital television (DTV) broadcast signal from a DTV transmitter, wherein the DTV signal comprises an Integrated Services Digital Broadcasting-Terrestrial (ISDB-T) signal; determining a pseudo-range between the user terminal and the DTV transmitter based on a known component in the broadcast DTV signal; and determining a position of the user terminal based on the pseudo-range and a location of the DTV transmitter.
Claims87
A method for determining the position of a user terminal, comprising:
- receiving at the user terminal a digital television (DTV) broadcast signal from a DTV transmitter, wherein the DTV signal comprises an Integrated Services Digital Broadcasting-Terrestrial (ISDB-T) signal;
- determining a pseudo-range between the user terminal and the DTV transmitter based on a known component in the broadcast DTV signal;
- and
- determining a position of the user terminal based on the pseudo-range and a location of the DTV transmitter.
A method for determining the position of a user terminal, comprising:
- receiving at the user terminal a digital television (DTV) broadcast signal from a DTV transmitter, wherein the DTV signal comprises a European Telecommunications Standards Institute (ETSI) Digital Video Broadcasting-Terrestrial (ISDB-T) signal;
- determining a pseudo-range between the user terminal and the DTV transmitter based on the DTV broadcast signal;
- and
- transmitting the pseudo-range to a location server configured to determine a position of the user terminal based on the pseudo-range and a location of the DTV transmitter.
A method for determining the position of a user terminal, comprising:
- receiving a pseudo-range from a user terminal, the pseudo-range determined between the user terminal and a DTV transmitter based on a DTV signal broadcast by the DTV transmitter, wherein the DTV signal comprises a European Telecommunications Standards Institute (ETSI) Digital Video Broadcasting-Terrestrial (ISDB-T) signal, and wherein the pseudo-range is determined based on a known component in the ISDB-T signal;
- and
- determining a position of the user terminal based on the pseudo-range and a location of the DTV transmitter.
An apparatus for determining the position of a user terminal, comprising:
- means for receiving at the user terminal a digital television (DTV) broadcast signal from a DTV transmitter, wherein the DTV signal comprises a European Telecommunications Standards Institute (ETSI) Digital Video Broadcasting-Terrestrial (ISDB-T) signal;
- means for determining a pseudo-range between the user terminal and the DTV transmitter based on a known component in the DTV broadcast signal;
- and
- means for determining a position of the user terminal based on the pseudo-range and a location of the DTV transmitter.
An apparatus for determining the position of a user terminal, comprising:
- means for receiving at the user terminal a digital television (DTV) broadcast signal from a DTV transmitter, wherein the DTV signal comprises a European Telecommunications Standards Institute (ETSI) Digital Video Broadcasting-Terrestrial (ISDB-T) signal;
- means for determining a pseudo-range between the user terminal and the DTV transmitter based on a known component in the DTV broadcast signal;
- and
- means for transmitting the pseudo-range to a location server configured to determine a position of the user terminal based on the pseudo-range and a location of the DTV transmitter.
An apparatus for determining the position of a user terminal, comprising:
- means for receiving a pseudo-range from a user terminal, the pseudo-range determined between the user terminal and a DTV transmitter based on a DTV signal broadcast by the DTV transmitter, wherein the DTV signal comprises a European Telecommunications Standards Institute (ETSI) Digital Video Broadcasting-Terrestrial (ISDB-T) signal, and wherein the pseudo-range is determined based on a known component in the DTV signal;
- and
- means for determining a position of the user terminal based on the pseudo-range and a location of the DTV transmitter.
A computer program product, tangibly stored on a computer-readable medium, for determining the position of a user terminal, comprising instructions operable to cause a programmable processor to:
- receive at the user terminal a digital television (DTV) broadcast signal from a DTV transmitter, wherein the DTV signal comprises a European Telecommunications Standards Institute (ETSI) Digital Video Broadcasting-Terrestrial (ISDB-T) signal;
- determine a pseudo-range between the user terminal and the DTV transmitter based on a known component in the DTV broadcast signal;
- and
- determine a position of the user terminal based on the pseudo-range and a location of the DTV transmitter.
A computer program product, tangibly stored on a computer-readable medium, for determining the position of a user terminal, comprising instructions operable to cause a programmable processor to:
- receive at the user terminal a digital television (DTV) broadcast signal from a DTV transmitter, wherein the DTV signal comprises a European Telecommunications Standards Institute (ETSI) Digital Video Broadcasting-Terrestrial (ISDB-T) signal;
- determine a pseudo-range between the user terminal and the DTV transmitter based on a known component in the DTV broadcast signal;
- and
- transmit the pseudo-range to a location server configured to determine a position of the user terminal based on the pseudo-range and a location of the DTV transmitter.
A computer program product, tangibly stored on a computer-readable medium, for determining the position of a user terminal, comprising instructions operable to cause a programmable processor to:
- receive a pseudo-range from a user terminal, the pseudo-range determined between the user terminal and a DTV transmitter based on a DTV signal broadcast by the DTV transmitter, wherein the DTV signal comprises a European Telecommunications Standards Institute (ETSI) Digital Video Broadcasting-Terrestrial (ISDB-T) signal, and wherein the pseudo-range is determined based on a known component in the DTV signal;
- and
- determine a position of the user terminal based on the pseudo-range and a location of the DTV transmitter.
Dependencies are inferred from the claim text.