Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Patent
1998-04-07
2000-11-07
Trost, William G.
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
455 69, 455442, H04B 700
Patent
active
061448613
ABSTRACT:
The transmit power of a base station transmission to a mobile station is advantageously controlled. The base station receives a signal from the mobile station and determines a signal-to-interference ratio (SIR) associated with the received signal. The base station controls its transmit power to the mobile station using the determined SIR value in conjunction with a transmit power control command received from the mobile station. When the mobile station is in the process of a soft handover involving two or more base stations, each of those base stations determines an SIR value associated with a signal received from the mobile station. Moreover, each of the base stations controls its respective power using both the power control command received from the mobile station and the SIR determined by that base station. Similarly, when the mobile station is in the process of softer handover involving two or more sectors of a single base station, the SIR associated with a signal received from the mobile station in each of those base station sectors is determined and used to control the respective power of each base station sector in conjunction with a power control command received from the mobile station.
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Butovitsch Paul Peter
Knutsson Jens
Sundelin Magnus
Thornberg Carl M.
Telefonaktiebolaget LM Ericsson
Trost William G.
Vuong Quochien B.
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