Method and apparatus for power control of a first channel based

Details Method and apparatus for power control of a first channel based Method and apparatus for power control of a first channel based

1996-06-28

1998-06-23

Urban, Edward F.

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

455422, 455 69, H04B 100

Patent

active

057714614

ABSTRACT:
Power control in a spread-spectrum communication system takes place by determining origination power of a traffic channel based on a number of active demodulators and pilot channel signal quality (610). Once origination transmit power is determined and call origination takes place, the transmit power is reduced at a first rate when a time is less than a time for all active demodulators to be established (615), otherwise the transmit power is reduced at a second rate (621). After all active demodulators have been acquired power control takes place by receiving a Power Measurement Report Message (PMRM) or a Pilot Strength Measurement Message (PSMM), determining, a signal quality metric existing at the remote unit based on the PMRM or PSMM, and adjusting transmit power based on the signal quality metric (645).

REFERENCES:
patent: 5455964 (1995-10-01), Roos et al.
patent: 5487180 (1996-01-01), Ohtake
patent: 5497505 (1996-03-01), Koohgoli et al.
patent: 5574983 (1996-11-01), Douzono et al.
patent: 5590409 (1996-12-01), Sawnhaski et al.

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