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US 6,611,233 B2Granted
Radio communication device and method of measuring distance
AssigneeSony Corporation
InventorMasayuki Kimura
Life of this patent
Estimating the term…
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AssigneeSony Corporation
InventorMasayuki Kimura
Estimating the term…
A radio communication device and a method of measuring distance is capable of easily obtaining a distance and a positional relation between a portable telephone 3A and a portable telephone 3B directly, not via a base station. The portable telephone 3A directly transmits a measurement pilot signal used for calculating a distance between its current position and the portable telephone 3B, to the portable telephone 3B via a radio interface for short distance 15, receives a pilot response signal in response to the measurement pilot signal from the portable telephone 3B, and then calculates a distance between the portable telephone 3A and the portable telephone 3B based on the pilot response signal and the measurement pilot signal, thus making it possible to easily obtain a distance and a positional relation between itself and the portable telephone 3B by directly communicating the pilot response signal and measurement pilot signal with the portable telephone 3B, not via the base station.
A radio communication device comprising:
A distance measuring method comprising the steps of:
A radio communication device comprising:
A distance measuring method comprising the steps of:
A radio communication device comprising:
A distance measuring method comprising the steps of:
Dependencies are inferred from the claim text.