Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2006-03-07
2006-03-07
Gesesse, Tilahun (Department: 2684)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S067150, C455S069000
Reexamination Certificate
active
07010320
ABSTRACT:
This invention is to prevent deterioration in communication quality of closed loop transmission power control, which may occur when the change in transmission power cannot keep up with a sudden change in the state of a transmission path. Transmission power control command extractor4extracts a transmission power control command from the uplink signal that has been received by receiver2.Mobile position predictor7predicts the future position of the mobile station from its present position as recognized by mobile position recognizer5and from its present rate of movement as recognized by mobile velocity recognizer6.Database8records the state of the downlink transmission path as a function of mobile position. Transmission power controller9looks up database8on the basis of the predicted future position of the mobile station and controls the downlink transmission power of base station BS on the basis of (i) the result of this lookup, and (ii) the transmission power control command. Transmitter11transmits at the downlink transmission power that has been instructed by transmission power controller9.
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Gesesse Tilahun
NEC Corporation
Trinh Tan
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