FIELD: radio engineering, communication.
SUBSTANCE: system for participant response includes at least one host computer and multiple remote units wirelessly communicating with the host computer using a packet protocol. Synchronisation data, network information and messages with data essentially meant for all remote units are packed into common transmission frames and said common transmission frames are transmitted to all said remote units for processing of said data by said remote units. Asynchronous transmission of messages with data meant for one or more selected remote units in message frames addressed to said one or more selected remote units is carried out, as well as asynchronous transmission from said remote units of messages with data meant for said host computer in message frames.
EFFECT: saving bandwidth with immediate feedback between system users.
31 cl, 12 dwg
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