METHOD AND APPARATUS FOR FORWARD POWER CONTROL IN A COMMUNICATION SYSTEM

Title:

METHOD AND APPARATUS FOR FORWARD POWER CONTROL IN A COMMUNICATION SYSTEM

Document Type and Number:

WIPO Patent Application WO2002054617

Kind Code:

A3

Abstract:

In a data communication system capable of variable rate transmission, the data rate is determined by the largest C/I measurement of the forward link signals as measured at the Access Terminal (6). In one embodiment, the date transmission is scheduled based on an Access Terminal (6) initiated forward power control, which reduces forward link rate quantization loss due to excess transmit power. The Access Terminal (6) reports to the Access Point (4) the excess C/I estimate for the selected rate. The Access Point (4) then reduces its transmit power by an appropriate amount when serving that Access Terminal (6). In another embodiment, the data transmission is scheduled based on an Access Point (4) initiated forward power control. The Access Point (4) varies its transmit power over time either randomly or in synchronism with neighboring Access Point (4) in the communication system, which enables an increase in the throughput achieved by users that receive a significant amount of interference.

Inventors:

WHEATLEY CHARLES E III
ATTAR RASHID A
ESTEVES EDUARDO A S

Application Number:

PCT/US2001/050641

Publication Date:

June 19, 2003

Filing Date:

December 27, 2001

Export Citation:

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Assignee:

QUALCOMM INC (US)

International Classes:

H04B7/00; H04B7/005; H04B7/26; (IPC1-7): H04B7/005

Domestic Patent References:

WO1999023844A2

1999-05-14

Foreign References:

DE19911146A1	2000-10-05
US5574982A	1996-11-12
EP0709973A1	1996-05-01
US5790940A	1998-08-04

Other References: