US Patent 7272418 Base station and wireless communication system
Patent 7272418 was granted and assigned to Hitachi on September, 2007 by the United States Patent and Trademark Office.
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The present invention reduces the number of base stations required to carry out terminal position detection. A base station which serves for terminal position detection using radio signals comprises an antenna to transmit and receive a radio signal; a radio signal receiver which generates a received signal from the radio signal received; a signal processing unit which processes the received signal and generates a transmit signal; a radio signal transmitter which generates a radio signal from the transmit signal; a control unit which exerts control of the base station operation; and a signal processing unit for position detection which performs signal processing for terminal position detection. A signal receivable range with which a signal can be received by the radio signal receiver is made longer than a signal transmission range with which a signal is transmitted by the radio signal transmitter.
US Patent 07272418 Base station and wireless communication system US Patent 7272418 Base station and wireless communication system
US Patent 07272418 Base station and wireless communication system
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