Functionality test in a base transceiver station

Details Functionality test in a base transceiver station Functionality test in a base transceiver station

2006-12-26

2006-12-26

Anderson, Matthew (Department: 2618)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S424000, C455S425000, C455S067150, C455S067140

Reexamination Certificate

active

07155216

ABSTRACT:
A base station in a radio system includes a transmitter that forms a signal to be transmitted by a transmission antenna of the base station, a mechanism forming a portion of the signal to be transmitted in a transmission frequency, a mechanism shifting the formed signal portion into a receiving frequency, where the separation between the receiving frequency and the transmission frequency differs from a frequency duplex used in the radio system, and a mechanism receiving the frequency-shifted signal portion.

REFERENCES:
patent: 5294934 (1994-03-01), Matsumoto
patent: 5572510 (1996-11-01), Koivu
patent: 5640728 (1997-06-01), Graebe
patent: 6741640 (2004-05-01), Johnson
patent: 6834078 (2004-12-01), Niemela et al.
patent: 2002/0042894 (2002-04-01), Henriksson

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