Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2007-09-18
2007-09-18
Anderson, Matthew (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S456100, C455S421000, C455S561000, C455S404200, C455S446000, C342S465000, C342S451000
Reexamination Certificate
active
10848367
ABSTRACT:
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.
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patent: 7215926 (2007-05-01), Corbett et al.
patent: 2003/0134648 (2003-07-01), Reed et al.
patent: 2006/0125695 (2006-06-01), Kennedy et al.
patent: 2007/0150192 (2007-06-01), Wakamatsu et al.
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Ogino et al., “Integrated Wireless LAN Access System (1) Study on Location System”, 2003 IEICE General Meeting, Hitachi Ltd. Central Research Laboratory, p. 662, with English translation.
Tsunehara Katsuhiko
Yano Takashi
A. Marquez, Esq. Juan Carlos
Anderson Matthew
Fisher Esq. Stanley P.
Hitachi , Ltd.
Reed Smith LLP
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