Patent ID: 7397776
Filing Date: 2008-07-08
Classification: H04W

Abstract:
1. A method for autonomously and dynamically optimizing transmission power of an endpoint in a wireless network, the method comprising the steps of: at the endpoint, measuring a received signal strength, a received signal quality and a received transmission error rate of a signal transmitted from an access point in the wireless network to the endpoint at a first endpoint transmission power and a first endpoint transmission speed; at the endpoint, reducing the first endpoint transmission power to a second endpoint transmission power when the received signal strength, the received signal quality and the received transmission error rate of the signal transmitted at the first endpoint transmission power and first endpoint transmission speed are determined to be at respectively acceptable operating levels; at the endpoint, measuring the received transmission error rate of the signal transmitted at the second endpoint transmission power and the first endpoint transmission speed; at the endpoint, adjusting one of the second endpoint transmission power or the first endpoint transmission speed based on whether the received transmission error rate of the signal transmitted at the second endpoint transmission power and the first endpoint transmission speed is still at its respective acceptable operating level; at the endpoint, reducing the first endpoint transmission speed to a second endpoint transmission speed, if the received transmission error rate of the signal transmitted at the second endpoint transmission power and the first endpoint transmission speed is not at its respective acceptable operating level and the first endpoint transmission speed is not equal to a slowest level endpoint transmission speed; at the endpoint, determining whether the received signal strength, the received signal quality and the received transmission error rate of the signal transmitted at the second endpoint transmission power and the second endpoint transmission speed have improved sufficiently to support a faster endpoint transmission speed; at the endpoint, determining whether the received signal strength, the received signal quality and the received transmission error rate of the signal transmitted at the second endpoint transmission power and the second endpoint transmission speed are at the respectively acceptable operating levels and, if not, at the endpoint, determining whether the second endpoint transmission speed is equal to the slowest level endpoint transmission speed; and at the endpoint, increasing the second endpoint transmission power to a third endpoint transmission power, if the second endpoint transmission speed is equal to the slowest level endpoint transmission speed.