Transmission power control method and system for CDMA...

Details Transmission power control method and system for CDMA... Transmission power control method and system for CDMA...

2005-11-01

2005-11-01

Corsaro, Nick (Department: 2684)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S069000, C455S070000, C455S013400

Reexamination Certificate

active

06961582

ABSTRACT:
A transmission power control method for a CDMA communication system which performs communication between a basestation and a plurality of mobile stations; comprising the steps of: transmitting uplink power from the plurality of the mobile stations to the basestation; measuring and receiving the uplink power transmitted from each of the plurality of mobile stations with different signal-to-interference (SIR) requirement thresholds at the basestation; taking a algorithm to converge the transmitted uplink power from each of the plurality of mobile stations; and calculating the uplink power transmitted from each of the plurality of mobile stations by a power convergence factor. The transmission power control method only needs the local measurements at the basestation and can meet different SIR requirements of mobile stations based on fair principle. Additionally, the transmission power control method of the present invention can not only converge fast, but also keep the transmitted power in a reasonable range.

REFERENCES:
patent: 6216010 (2001-04-01), Edwards
patent: 6307844 (2001-10-01), Tsunehara
patent: 6718180 (2004-04-01), Lundh et al.
patent: 2001/0053670 (2001-12-01), Voyer
patent: 2002/0173309 (2002-11-01), Shahidi et al.
patent: 2002/0181550 (2002-12-01), Zeira et al.
Qiang Wu, Member, IEEE, Optimum Transmitter Power Control in Cellular Systems with Heterogenons SIR Thresholds.

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