Patent ID: 6775555
Filing Date: 2004-08-10
Classification: H04M

Abstract:
A cordless telephone for making radio communications between a base unit and a handset unit comprising:a) a base unit controller incorporated in the base unit for outputting a control signal including a request for controlling the handset unit transmission power responsive to the CRC error rate (CRCE) and received signal strength indicator (RSSI) value of the base unit, and b) a handset unit controller incorporated in the handset unit for receiving the control signal from the base unit and controlling the handset unit, wherein said base unit controller: i) sends the request to the handset unit controller to set the handset unit transmission power (handset unit power) to high value when the CRCE is larger than a predetermined error rate, ii) sends the request to set the handset unit power to high value when the RSSI value is not more than a predetermined value, and iii) sends the request to set the handset unit power to low value when the CRCE is not more than the predetermined error rate and the RSSI value is larger than a predetermined value, and said handset unit controller sets the handset unit power based on at least one of the control signal from the base unit controller and a determination by the handset unit controller.