Quasi-duplex radio system using bi-directional hole extension

Details Quasi-duplex radio system using bi-directional hole extension Quasi-duplex radio system using bi-directional hole extension

H - Electricity

04

J

H04J 3/16 (2006.01) H04B 7/26 (2006.01) H04Q 7/28 (2006.01)

Patent

CA 2063388

2063388 9109481 PCTABS00005 A method for interrupting a radio transmission in a quasi-duplex radio-frequency communication system. The method of the present invention includes the step of transmitting a signal (22), with periodically-occurring holes (24) therein, by a first communication unit (10) to at least a second communication unit (12). The transmitted signal (12) includes an audio information portion (16) and information packets (23). Each information packet (23) specifies the time of occurrence of the next hole (24). The second communication unit (12) initiates an interruption of the transmission made by the first communication unit (10) by transmitting an interrupt request signal (31) to the first communication unit (10) at a time specified by an information packet (23) received by the second communication unit (12). When the first communication unit (10) receives the interrupt request signal (31), it processes the interrupt request signal (23) to determine whether it complies with predetermined criteria. If the first communication unit determines that the interrupt request signal complies with the predetermined criteria, it transmits an acknowledgement signal allowing the second communication unit (12) to interrupt the transmission so that the second communication unit (12) may begin transmitting information to be received by at least the first communication unit (10).

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