Transmission power control method of a spread-spectrum communica

Details Transmission power control method of a spread-spectrum communica Transmission power control method of a spread-spectrum communica

1995-05-11

1997-02-18

Tse, Young T.

Pulse or digital communications

Repeaters

Testing

370335, 455 69, H04B 726, H04L 2730

Patent

active

056047665

ABSTRACT:
A transmission power control method of a spread-spectrum communication system which determines transmission power in accordance with a transmission power control bit. The transmission power control bit is extracted at a base station from a signal sequence obtained by receiving a signal transmitted from a mobile station, and by despreading and demodulating the received signal. When the same value of the transmission power control bit is consecutively received, the transmission power of the base station is controlled in accordance with transmission power control quantities which are predetermined in accordance with the consecutive number of receptions of the same value of the transmission power control bit. This is because the consecutive receptions of the same value of the transmission power control bit suggests that the received power of the other party (the mobile station in this case) changes greatly. Thus, an amount of an increment or a decrement in the transmission power is increased with the duration of the consecutive receptions. This makes it possible for the transmission power control to follow sudden changes in propagation paths.

REFERENCES:
patent: 5056109 (1991-10-01), Gilhousen et al.
patent: 5093840 (1992-03-01), Schilling
patent: 5216692 (1993-06-01), Ling
patent: 5245629 (1993-09-01), Hall
patent: 5297161 (1994-03-01), Ling
patent: 5305468 (1994-04-01), Bruckert et al.
patent: 5383219 (1995-01-01), Wheatley, III et al.

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