Patent ID: 6366572
Filing Date: 2002-04-02
Classification: H04M,H04W

Abstract:
A wireless communication system, comprising:a first transmitter in a first wireless communication unit to transmit data to a second wireless unit, the first transmitter operating at a selected frequency to transmit a request to communicate with the second wireless unit; a first receiver in the first wireless communication unit to receive data from the second wireless unit; a second receiver in the second wireless unit monitoring the selected frequency to thereby detect the request to communicate transmitted from the first wireless unit; a second transmitter to transmit a response signal to the first wireless unit to indicate reception of the request to communicate, the first and second wireless units thereby establishing a communication link with the first wireless unit functioning as a master unit and the second wireless unit functioning as a slave unit; a first signal monitor in the first wireless unit coupled to the first receiver and determining a first received signal strength indicative of a strength of the signal received from the second wireless unit, the first transmitter transmitting a power change request signal to the second wireless unit if the first received signal strength is above or below a first set of predetermined limits; and a second signal monitor in the second wireless unit coupled to the second receiver and determining a second received signal strength indicative of a strength of the signal received from the first wireless unit, the second transmitter transmitting a power change request signal to the first wireless unit if the second received signal strength is above or below a second set of predetermined limits.