Patent ID: 6470003
Filing Date: 2002-10-22
Classification: H04B,H04L,H04W

Abstract:
A method in a two-way radio messaging unit for limiting a total transmission duration within a sliding time window of a predetermined duration, the two-way radio messaging unit utilizing a protocol in which information is sent in a plurality of periodically transmitted frames, the method comprising the steps of:defining a plurality of bins within the sliding time window, each bin for storing a total transmit duration of a predetermined number of frames assigned to each bin; determining a mean transmit duration per frame for a next one of the plurality of bins to be processed; subtracting said mean transmit duration per frame from the total transmit duration of the one of the plurality of bins, when a next frame begins to be processed; calculating a transmit duty cycle for the sliding time window, the transmit duty cycle calculated as if a requested transmit duration for the next frame were to be allowed; and delaying a transmission of the next frame, when the transmit duty cycle is greater than a maximum allowable transmit duty cycle.