POSITIONING SYSTEM
First Claim
Patent Images
1. A method for providing information to a positioning terminal comprising:
- receiving positional information and time information from a mobile terminal based on a positioning signal received from a satellite positioning system (SPS) satellite;
calculating a reference time based on the positional information and the time information;
receiving an information request signal from the positioning terminal; and
sending the reference time corresponding with the information request signal.
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Abstract
A positioning system is provided having a first signal source for originating synchronous signals, and a second signal source for originating a signal which is not synchronous with the signal from the first signal source. The system determines, based on a signal propagation time and signal propagation speed from the first or second signal source, the distance to this signal source so as to determine a position of a receiving point.
28 Citations
41 Claims
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1. A method for providing information to a positioning terminal comprising:
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receiving positional information and time information from a mobile terminal based on a positioning signal received from a satellite positioning system (SPS) satellite; calculating a reference time based on the positional information and the time information; receiving an information request signal from the positioning terminal; and sending the reference time corresponding with the information request signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for providing information to a positioning terminal comprising:
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a receiver that receives positional information and time information from a mobile terminal based on a positioning signal received from a satellite positioning system (SPS) satellite; a calculator that calculates a reference time based on the positional information and the time information; a transmitter that receives an information request signal from the positioning terminal and sends the reference time corresponding with the information request signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A system to provide information to a positioning terminal comprising:
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a receiver that receives positional information and time information from a mobile terminal based on a positioning signal received from a satellite positioning system (SPS) satellite; a calculator that calculates a reference time based on the positional information and the time information; a transmitter that receives an information request signal from the positioning terminal and sends the reference time corresponding with the information request signal. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A positioning terminal including a satellite signal receiver receiving a positioning signal from a satellite positioning system (SPS) satellite and a base station signal receiver receiving a signal from a base station comprising:
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a transmitter that sends an information request signal to an information providing apparatus where the reference time is stored, said information providing apparatus receives positional information and time information from a mobile terminal based on the positioning signal received from the SPS satellite, and calculates a reference time based on the positional information and the time information; a reference time receiver that receives the reference time from the information providing apparatus; an error corrector that corrects the signal from the base station based on the reference time; and a positioning device that positions based on the positioning signal and the corrected signal from the base station. - View Dependent Claims (29, 30, 31, 32)
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33. A mobile terminal including a satellite signal receiver receiving a positioning signal from a satellite positioning system (SPS) satellite and a positioning device positioning based on the positioning signal, comprising:
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a base station signal receiver that receives a signal from a base station; a measurement device that measures a receiving time (TR) of a predetermined event of the signal received from the base station based on a predetermined time; and a transmitter that sends positional information and a receiving time to the information providing apparatus where the positional information and the receiving time are provided to a positioning terminal, wherein the information providing apparatus calculates reference time based on the positional information and the receiving time received from the mobile terminal, receives an information request signal from the positioning terminal, and sends the reference time which corresponds with the information request signal. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41)
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Specification